5 Changes between 1.0.2 and 1.1.0 [xx XXX xxxx]
7 *) Added ASYNC support. Libcrypto now includes the async sub-library to enable
8 cryptographic operations to be performed asynchronously as long as an
9 asynchronous capable engine is used. See the ASYNC_start_job() man page for
10 further details. Libssl has also had this capability integrated with the
11 introduction of the new mode SSL_MODE_ASYNC and associated error
12 SSL_ERROR_WANT_ASYNC. See the SSL_CTX_set_mode() and SSL_get_error() man
13 pages. This work was developed in partnership with Intel Corp.
16 *) SSL_{CTX_}set_ecdh_auto() has been removed and ECDH is support is
17 always enabled now. If you want to disable the support you should
18 exclude it using the list of supported ciphers.
21 *) SSL_{CTX}_set_tmp_ecdh() which can set 1 EC curve now internally calls
22 SSL_{CTX_}set1_curves() which can set a list.
25 *) Remove support for SSL_{CTX_}set_tmp_ecdh_callback(). You should set the
26 curve you want to support using SSL_{CTX_}set1_curves().
29 *) State machine rewrite. The state machine code has been significantly
30 refactored in order to remove much duplication of code and solve issues
31 with the old code (see ssl/statem/README for further details). This change
32 does have some associated API changes. Notably the SSL_state() function
33 has been removed and replaced by SSL_get_state which now returns an
34 "OSSL_HANDSHAKE_STATE" instead of an int. SSL_set_state() has been removed
35 altogether. The previous handshake states defined in ssl.h and ssl3.h have
39 *) All instances of the string "ssleay" in the public API were replaced
40 with OpenSSL (case-matching; e.g., OPENSSL_VERSION for #define's)
41 Some error codes related to internal RSA_eay API's were renamed.
44 *) The demo files in crypto/threads were moved to demo/threads.
47 *) Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron and sureware.
50 *) New ASN.1 embed macro.
52 New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the
53 structure is not allocated: it is part of the parent. That is instead of
61 This reduces memory fragmentation and make it impossible to accidentally
62 set a mandatory field to NULL.
64 This currently only works for some fields specifically a SEQUENCE, CHOICE,
65 or ASN1_STRING type which is part of a parent SEQUENCE. Since it is
66 equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or
70 *) Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled.
73 *) Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although
74 in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also
75 an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add
76 DES and RC4 ciphersuites.
79 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
80 This changes the decoding behaviour for some invalid messages,
81 though the change is mostly in the more lenient direction, and
82 legacy behaviour is preserved as much as possible.
85 *) Fix no-stdio build.
86 [ David Woodhouse <David.Woodhouse@intel.com> and also
87 Ivan Nestlerode <ivan.nestlerode@sonos.com> ]
89 *) New testing framework
90 The testing framework has been largely rewritten and is now using
91 perl and the perl modules Test::Harness and an extended variant of
92 Test::More called OpenSSL::Test to do its work. All test scripts in
93 test/ have been rewritten into test recipes, and all direct calls to
94 executables in test/Makefile have become individual recipes using the
95 simplified testing OpenSSL::Test::Simple.
97 For documentation on our testing modules, do:
99 perldoc test/testlib/OpenSSL/Test/Simple.pm
100 perldoc test/testlib/OpenSSL/Test.pm
104 *) In DSA_generate_parameters_ex, if the provided seed is too short,
106 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
108 *) Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
109 from RFC4279, RFC4785, RFC5487, RFC5489.
111 Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the
112 original RSA_PSK patch.
115 *) Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay
116 era flag was never set throughout the codebase (only read). Also removed
117 SSL3_FLAGS_POP_BUFFER which was only used if
118 SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set.
121 *) Changed the default name options in the "ca", "crl", "req" and "x509"
122 to be "oneline" instead of "compat".
125 *) Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're
126 not aware of clients that still exhibit this bug, and the workaround
127 hasn't been working properly for a while.
130 *) The return type of BIO_number_read() and BIO_number_written() as well as
131 the corresponding num_read and num_write members in the BIO structure has
132 changed from unsigned long to uint64_t. On platforms where an unsigned
133 long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is
137 *) Given the pervasive nature of TLS extensions it is inadvisable to run
138 OpenSSL without support for them. It also means that maintaining
139 the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
140 not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
143 *) Removed support for the two export grade static DH ciphersuites
144 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
145 were newly added (along with a number of other static DH ciphersuites) to
146 1.0.2. However the two export ones have *never* worked since they were
147 introduced. It seems strange in any case to be adding new export
148 ciphersuites, and given "logjam" it also does not seem correct to fix them.
151 *) Version negotiation has been rewritten. In particular SSLv23_method(),
152 SSLv23_client_method() and SSLv23_server_method() have been deprecated,
153 and turned into macros which simply call the new preferred function names
154 TLS_method(), TLS_client_method() and TLS_server_method(). All new code
155 should use the new names instead. Also as part of this change the ssl23.h
156 header file has been removed.
159 *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
160 code and the associated standard is no longer considered fit-for-purpose.
163 *) RT2547 was closed. When generating a private key, try to make the
164 output file readable only by the owner. This behavior change might
165 be noticeable when interacting with other software.
167 *) Documented all exdata functions. Added CRYPTO_free_ex_index.
171 *) Added HTTP GET support to the ocsp command.
174 *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
177 *) Added support for TLS extended master secret from
178 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
179 initial patch which was a great help during development.
182 *) All libssl internal structures have been removed from the public header
183 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
184 now redundant). Users should not attempt to access internal structures
185 directly. Instead they should use the provided API functions.
188 *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
189 Access to deprecated functions can be re-enabled by running config with
190 "enable-deprecated". In addition applications wishing to use deprecated
191 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
192 will, by default, disable some transitive includes that previously existed
193 in the header files (e.g. ec.h will no longer, by default, include bn.h)
196 *) Added support for OCB mode. OpenSSL has been granted a patent license
197 compatible with the OpenSSL license for use of OCB. Details are available
198 at https://www.openssl.org/docs/misc/OCB-patent-grant-OpenSSL.pdf. Support
199 for OCB can be removed by calling config with no-ocb.
202 *) SSLv2 support has been removed. It still supports receiving a SSLv2
203 compatible client hello.
206 *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
207 done while fixing the error code for the key-too-small case.
208 [Annie Yousar <a.yousar@informatik.hu-berlin.de>]
210 *) CA.sh has been removmed; use CA.pl instead.
213 *) Removed old DES API.
216 *) Remove various unsupported platforms:
222 Sinix/ReliantUNIX RM400
227 16-bit platforms such as WIN16
230 *) Clean up OPENSSL_NO_xxx #define's
231 Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
232 Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
233 OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
234 OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
235 OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
236 Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
237 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
238 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
239 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
240 Remove MS_STATIC; it's a relic from platforms <32 bits.
243 *) Cleaned up dead code
244 Remove all but one '#ifdef undef' which is to be looked at.
247 *) Clean up calling of xxx_free routines.
248 Just like free(), fix most of the xxx_free routines to accept
249 NULL. Remove the non-null checks from callers. Save much code.
252 *) Add secure heap for storage of private keys (when possible).
253 Add BIO_s_secmem(), CBIGNUM, etc.
254 Contributed by Akamai Technologies under our Corporate CLA.
257 *) Experimental support for a new, fast, unbiased prime candidate generator,
258 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
259 [Felix Laurie von Massenbach <felix@erbridge.co.uk>]
261 *) New output format NSS in the sess_id command line tool. This allows
262 exporting the session id and the master key in NSS keylog format.
263 [Martin Kaiser <martin@kaiser.cx>]
265 *) Harmonize version and its documentation. -f flag is used to display
267 [mancha <mancha1@zoho.com>]
269 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
270 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
271 [mancha <mancha1@zoho.com>]
273 *) Fix some double frees. These are not thought to be exploitable.
274 [mancha <mancha1@zoho.com>]
276 *) A missing bounds check in the handling of the TLS heartbeat extension
277 can be used to reveal up to 64k of memory to a connected client or
280 Thanks for Neel Mehta of Google Security for discovering this bug and to
281 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
282 preparing the fix (CVE-2014-0160)
283 [Adam Langley, Bodo Moeller]
285 *) Fix for the attack described in the paper "Recovering OpenSSL
286 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
287 by Yuval Yarom and Naomi Benger. Details can be obtained from:
288 http://eprint.iacr.org/2014/140
290 Thanks to Yuval Yarom and Naomi Benger for discovering this
291 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
292 [Yuval Yarom and Naomi Benger]
294 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
295 this fixes a limitation in previous versions of OpenSSL.
298 *) Experimental encrypt-then-mac support.
300 Experimental support for encrypt then mac from
301 draft-gutmann-tls-encrypt-then-mac-02.txt
303 To enable it set the appropriate extension number (0x42 for the test
304 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
306 For non-compliant peers (i.e. just about everything) this should have no
309 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
313 *) Add EVP support for key wrapping algorithms, to avoid problems with
314 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
315 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
316 algorithms and include tests cases.
319 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
323 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
324 MGF1 digest and OAEP label.
327 *) Make openssl verify return errors.
328 [Chris Palmer <palmer@google.com> and Ben Laurie]
330 *) New function ASN1_TIME_diff to calculate the difference between two
331 ASN1_TIME structures or one structure and the current time.
334 *) Update fips_test_suite to support multiple command line options. New
335 test to induce all self test errors in sequence and check expected
339 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
340 sign or verify all in one operation.
343 *) Add fips_algvs: a multicall fips utility incorporating all the algorithm
344 test programs and fips_test_suite. Includes functionality to parse
345 the minimal script output of fipsalgest.pl directly.
348 *) Add authorisation parameter to FIPS_module_mode_set().
351 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
354 *) Use separate DRBG fields for internal and external flags. New function
355 FIPS_drbg_health_check() to perform on demand health checking. Add
356 generation tests to fips_test_suite with reduced health check interval to
357 demonstrate periodic health checking. Add "nodh" option to
358 fips_test_suite to skip very slow DH test.
361 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
365 *) More extensive health check for DRBG checking many more failure modes.
366 New function FIPS_selftest_drbg_all() to handle every possible DRBG
367 combination: call this in fips_test_suite.
370 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
371 and POST to handle Dual EC cases.
374 *) Add support for canonical generation of DSA parameter 'g'. See
377 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
378 POST to handle HMAC cases.
381 *) Add functions FIPS_module_version() and FIPS_module_version_text()
382 to return numerical and string versions of the FIPS module number.
385 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
386 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
387 outside the validated module in the FIPS capable OpenSSL.
390 *) Minor change to DRBG entropy callback semantics. In some cases
391 there is no multiple of the block length between min_len and
392 max_len. Allow the callback to return more than max_len bytes
393 of entropy but discard any extra: it is the callback's responsibility
394 to ensure that the extra data discarded does not impact the
395 requested amount of entropy.
398 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
399 information in FIPS186-3, SP800-57 and SP800-131A.
402 *) CCM support via EVP. Interface is very similar to GCM case except we
403 must supply all data in one chunk (i.e. no update, final) and the
404 message length must be supplied if AAD is used. Add algorithm test
408 *) Initial version of POST overhaul. Add POST callback to allow the status
409 of POST to be monitored and/or failures induced. Modify fips_test_suite
410 to use callback. Always run all selftests even if one fails.
413 *) XTS support including algorithm test driver in the fips_gcmtest program.
414 Note: this does increase the maximum key length from 32 to 64 bytes but
415 there should be no binary compatibility issues as existing applications
416 will never use XTS mode.
419 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
420 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
421 performs algorithm blocking for unapproved PRNG types. Also do not
422 set PRNG type in FIPS_mode_set(): leave this to the application.
423 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
424 the standard OpenSSL PRNG: set additional data to a date time vector.
427 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
428 This shouldn't present any incompatibility problems because applications
429 shouldn't be using these directly and any that are will need to rethink
430 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
433 *) Extensive self tests and health checking required by SP800-90 DRBG.
434 Remove strength parameter from FIPS_drbg_instantiate and always
435 instantiate at maximum supported strength.
438 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
441 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
444 *) New function DH_compute_key_padded() to compute a DH key and pad with
445 leading zeroes if needed: this complies with SP800-56A et al.
448 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
449 anything, incomplete, subject to change and largely untested at present.
452 *) Modify fipscanisteronly build option to only build the necessary object
453 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
456 *) Add experimental option FIPSSYMS to give all symbols in
457 fipscanister.o and FIPS or fips prefix. This will avoid
458 conflicts with future versions of OpenSSL. Add perl script
459 util/fipsas.pl to preprocess assembly language source files
460 and rename any affected symbols.
463 *) Add selftest checks and algorithm block of non-fips algorithms in
464 FIPS mode. Remove DES2 from selftests.
467 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
468 return internal method without any ENGINE dependencies. Add new
469 tiny fips sign and verify functions.
472 *) New build option no-ec2m to disable characteristic 2 code.
475 *) New build option "fipscanisteronly". This only builds fipscanister.o
476 and (currently) associated fips utilities. Uses the file Makefile.fips
477 instead of Makefile.org as the prototype.
480 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
481 Update fips_gcmtest to use IV generator.
484 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
485 setting output buffer to NULL. The *Final function must be
486 called although it will not retrieve any additional data. The tag
487 can be set or retrieved with a ctrl. The IV length is by default 12
488 bytes (96 bits) but can be set to an alternative value. If the IV
489 length exceeds the maximum IV length (currently 16 bytes) it cannot be
493 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
494 underlying do_cipher function handles all cipher semantics itself
495 including padding and finalisation. This is useful if (for example)
496 an ENGINE cipher handles block padding itself. The behaviour of
497 do_cipher is subtly changed if this flag is set: the return value
498 is the number of characters written to the output buffer (zero is
499 no longer an error code) or a negative error code. Also if the
500 input buffer is NULL and length 0 finalisation should be performed.
503 *) If a candidate issuer certificate is already part of the constructed
504 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
507 *) Improve forward-security support: add functions
509 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
510 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
512 for use by SSL/TLS servers; the callback function will be called whenever a
513 new session is created, and gets to decide whether the session may be
514 cached to make it resumable (return 0) or not (return 1). (As by the
515 SSL/TLS protocol specifications, the session_id sent by the server will be
516 empty to indicate that the session is not resumable; also, the server will
517 not generate RFC 4507 (RFC 5077) session tickets.)
519 A simple reasonable callback implementation is to return is_forward_secure.
520 This parameter will be set to 1 or 0 depending on the ciphersuite selected
521 by the SSL/TLS server library, indicating whether it can provide forward
523 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
525 *) New -verify_name option in command line utilities to set verification
529 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
530 Add CMAC pkey methods.
533 *) Experimental renegotiation in s_server -www mode. If the client
534 browses /reneg connection is renegotiated. If /renegcert it is
535 renegotiated requesting a certificate.
538 *) Add an "external" session cache for debugging purposes to s_server. This
539 should help trace issues which normally are only apparent in deployed
540 multi-process servers.
543 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
544 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
545 BIO_set_cipher() and some obscure PEM functions were changed so they
546 can now return an error. The RAND changes required a change to the
547 RAND_METHOD structure.
550 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
551 a gcc attribute to warn if the result of a function is ignored. This
552 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
553 whose return value is often ignored.
556 Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
558 *) Alternate chains certificate forgery
560 During certificate verfification, OpenSSL will attempt to find an
561 alternative certificate chain if the first attempt to build such a chain
562 fails. An error in the implementation of this logic can mean that an
563 attacker could cause certain checks on untrusted certificates to be
564 bypassed, such as the CA flag, enabling them to use a valid leaf
565 certificate to act as a CA and "issue" an invalid certificate.
567 This issue was reported to OpenSSL by Adam Langley/David Benjamin
571 Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
573 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI
574 incompatibility in the handling of HMAC. The previous ABI has now been
578 Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
580 *) Malformed ECParameters causes infinite loop
582 When processing an ECParameters structure OpenSSL enters an infinite loop
583 if the curve specified is over a specially malformed binary polynomial
586 This can be used to perform denial of service against any
587 system which processes public keys, certificate requests or
588 certificates. This includes TLS clients and TLS servers with
589 client authentication enabled.
591 This issue was reported to OpenSSL by Joseph Barr-Pixton.
595 *) Exploitable out-of-bounds read in X509_cmp_time
597 X509_cmp_time does not properly check the length of the ASN1_TIME
598 string and can read a few bytes out of bounds. In addition,
599 X509_cmp_time accepts an arbitrary number of fractional seconds in the
602 An attacker can use this to craft malformed certificates and CRLs of
603 various sizes and potentially cause a segmentation fault, resulting in
604 a DoS on applications that verify certificates or CRLs. TLS clients
605 that verify CRLs are affected. TLS clients and servers with client
606 authentication enabled may be affected if they use custom verification
609 This issue was reported to OpenSSL by Robert Swiecki (Google), and
610 independently by Hanno Böck.
614 *) PKCS7 crash with missing EnvelopedContent
616 The PKCS#7 parsing code does not handle missing inner EncryptedContent
617 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
618 with missing content and trigger a NULL pointer dereference on parsing.
620 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
621 structures from untrusted sources are affected. OpenSSL clients and
622 servers are not affected.
624 This issue was reported to OpenSSL by Michal Zalewski (Google).
628 *) CMS verify infinite loop with unknown hash function
630 When verifying a signedData message the CMS code can enter an infinite loop
631 if presented with an unknown hash function OID. This can be used to perform
632 denial of service against any system which verifies signedData messages using
634 This issue was reported to OpenSSL by Johannes Bauer.
638 *) Race condition handling NewSessionTicket
640 If a NewSessionTicket is received by a multi-threaded client when attempting to
641 reuse a previous ticket then a race condition can occur potentially leading to
642 a double free of the ticket data.
646 *) Only support 256-bit or stronger elliptic curves with the
647 'ecdh_auto' setting (server) or by default (client). Of supported
648 curves, prefer P-256 (both).
651 Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
653 *) ClientHello sigalgs DoS fix
655 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
656 invalid signature algorithms extension a NULL pointer dereference will
657 occur. This can be exploited in a DoS attack against the server.
659 This issue was was reported to OpenSSL by David Ramos of Stanford
662 [Stephen Henson and Matt Caswell]
664 *) Multiblock corrupted pointer fix
666 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
667 feature only applies on 64 bit x86 architecture platforms that support AES
668 NI instructions. A defect in the implementation of "multiblock" can cause
669 OpenSSL's internal write buffer to become incorrectly set to NULL when
670 using non-blocking IO. Typically, when the user application is using a
671 socket BIO for writing, this will only result in a failed connection.
672 However if some other BIO is used then it is likely that a segmentation
673 fault will be triggered, thus enabling a potential DoS attack.
675 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
679 *) Segmentation fault in DTLSv1_listen fix
681 The DTLSv1_listen function is intended to be stateless and processes the
682 initial ClientHello from many peers. It is common for user code to loop
683 over the call to DTLSv1_listen until a valid ClientHello is received with
684 an associated cookie. A defect in the implementation of DTLSv1_listen means
685 that state is preserved in the SSL object from one invocation to the next
686 that can lead to a segmentation fault. Errors processing the initial
687 ClientHello can trigger this scenario. An example of such an error could be
688 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
691 This issue was reported to OpenSSL by Per Allansson.
695 *) Segmentation fault in ASN1_TYPE_cmp fix
697 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
698 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
699 certificate signature algorithm consistency this can be used to crash any
700 certificate verification operation and exploited in a DoS attack. Any
701 application which performs certificate verification is vulnerable including
702 OpenSSL clients and servers which enable client authentication.
706 *) Segmentation fault for invalid PSS parameters fix
708 The signature verification routines will crash with a NULL pointer
709 dereference if presented with an ASN.1 signature using the RSA PSS
710 algorithm and invalid parameters. Since these routines are used to verify
711 certificate signature algorithms this can be used to crash any
712 certificate verification operation and exploited in a DoS attack. Any
713 application which performs certificate verification is vulnerable including
714 OpenSSL clients and servers which enable client authentication.
716 This issue was was reported to OpenSSL by Brian Carpenter.
720 *) ASN.1 structure reuse memory corruption fix
722 Reusing a structure in ASN.1 parsing may allow an attacker to cause
723 memory corruption via an invalid write. Such reuse is and has been
724 strongly discouraged and is believed to be rare.
726 Applications that parse structures containing CHOICE or ANY DEFINED BY
727 components may be affected. Certificate parsing (d2i_X509 and related
728 functions) are however not affected. OpenSSL clients and servers are
733 *) PKCS7 NULL pointer dereferences fix
735 The PKCS#7 parsing code does not handle missing outer ContentInfo
736 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
737 missing content and trigger a NULL pointer dereference on parsing.
739 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
740 otherwise parse PKCS#7 structures from untrusted sources are
741 affected. OpenSSL clients and servers are not affected.
743 This issue was reported to OpenSSL by Michal Zalewski (Google).
747 *) DoS via reachable assert in SSLv2 servers fix
749 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
750 servers that both support SSLv2 and enable export cipher suites by sending
751 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
753 This issue was discovered by Sean Burford (Google) and Emilia Käsper
754 (OpenSSL development team).
758 *) Empty CKE with client auth and DHE fix
760 If client auth is used then a server can seg fault in the event of a DHE
761 ciphersuite being selected and a zero length ClientKeyExchange message
762 being sent by the client. This could be exploited in a DoS attack.
766 *) Handshake with unseeded PRNG fix
768 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
769 with an unseeded PRNG. The conditions are:
770 - The client is on a platform where the PRNG has not been seeded
771 automatically, and the user has not seeded manually
772 - A protocol specific client method version has been used (i.e. not
773 SSL_client_methodv23)
774 - A ciphersuite is used that does not require additional random data from
775 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
777 If the handshake succeeds then the client random that has been used will
778 have been generated from a PRNG with insufficient entropy and therefore the
779 output may be predictable.
781 For example using the following command with an unseeded openssl will
782 succeed on an unpatched platform:
784 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
788 *) Use After Free following d2i_ECPrivatekey error fix
790 A malformed EC private key file consumed via the d2i_ECPrivateKey function
791 could cause a use after free condition. This, in turn, could cause a double
792 free in several private key parsing functions (such as d2i_PrivateKey
793 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
794 for applications that receive EC private keys from untrusted
795 sources. This scenario is considered rare.
797 This issue was discovered by the BoringSSL project and fixed in their
802 *) X509_to_X509_REQ NULL pointer deref fix
804 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
805 the certificate key is invalid. This function is rarely used in practice.
807 This issue was discovered by Brian Carpenter.
811 *) Removed the export ciphers from the DEFAULT ciphers
814 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
816 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
817 ARMv5 through ARMv8, as opposite to "locking" it to single one.
818 So far those who have to target multiple plaforms would compromise
819 and argue that binary targeting say ARMv5 would still execute on
820 ARMv8. "Universal" build resolves this compromise by providing
821 near-optimal performance even on newer platforms.
824 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
825 (other platforms pending).
826 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
828 *) Add support for the SignedCertificateTimestampList certificate and
829 OCSP response extensions from RFC6962.
832 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
833 for corner cases. (Certain input points at infinity could lead to
834 bogus results, with non-infinity inputs mapped to infinity too.)
837 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
838 This covers AES, SHA256/512 and GHASH. "Initial" means that most
839 common cases are optimized and there still is room for further
840 improvements. Vector Permutation AES for Altivec is also added.
843 *) Add support for little-endian ppc64 Linux target.
844 [Marcelo Cerri (IBM)]
846 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
847 SHA1, SHA256 and GHASH. "Initial" means that most common cases
848 are optimized and there still is room for further improvements.
849 Both 32- and 64-bit modes are supported.
850 [Andy Polyakov, Ard Biesheuvel (Linaro)]
852 *) Improved ARMv7 NEON support.
855 *) Support for SPARC Architecture 2011 crypto extensions, first
856 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
857 SHA256/512, MD5, GHASH and modular exponentiation.
858 [Andy Polyakov, David Miller]
860 *) Accelerated modular exponentiation for Intel processors, a.k.a.
862 [Shay Gueron & Vlad Krasnov (Intel Corp)]
864 *) Support for new and upcoming Intel processors, including AVX2,
865 BMI and SHA ISA extensions. This includes additional "stitched"
866 implementations, AESNI-SHA256 and GCM, and multi-buffer support
869 This work was sponsored by Intel Corp.
872 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
873 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
874 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
877 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
878 this fixes a limiation in previous versions of OpenSSL.
881 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
882 MGF1 digest and OAEP label.
885 *) Add EVP support for key wrapping algorithms, to avoid problems with
886 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
887 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
888 algorithms and include tests cases.
891 *) Add functions to allocate and set the fields of an ECDSA_METHOD
893 [Douglas E. Engert, Steve Henson]
895 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
896 difference in days and seconds between two tm or ASN1_TIME structures.
899 *) Add -rev test option to s_server to just reverse order of characters
900 received by client and send back to server. Also prints an abbreviated
901 summary of the connection parameters.
904 *) New option -brief for s_client and s_server to print out a brief summary
905 of connection parameters.
908 *) Add callbacks for arbitrary TLS extensions.
909 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
911 *) New option -crl_download in several openssl utilities to download CRLs
912 from CRLDP extension in certificates.
915 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
918 *) New function X509_CRL_diff to generate a delta CRL from the difference
919 of two full CRLs. Add support to "crl" utility.
922 *) New functions to set lookup_crls function and to retrieve
923 X509_STORE from X509_STORE_CTX.
926 *) Print out deprecated issuer and subject unique ID fields in
930 *) Extend OCSP I/O functions so they can be used for simple general purpose
931 HTTP as well as OCSP. New wrapper function which can be used to download
932 CRLs using the OCSP API.
935 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
938 *) SSL_CONF* functions. These provide a common framework for application
939 configuration using configuration files or command lines.
942 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
943 message callback and prints the results. Needs compile time option
944 "enable-ssl-trace". New options to s_client and s_server to enable
948 *) New ctrl and macro to retrieve supported points extensions.
949 Print out extension in s_server and s_client.
952 *) New functions to retrieve certificate signature and signature
956 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
960 *) New Suite B modes for TLS code. These use and enforce the requirements
961 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
962 only use Suite B curves. The Suite B modes can be set by using the
963 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
966 *) New chain verification flags for Suite B levels of security. Check
967 algorithms are acceptable when flags are set in X509_verify_cert.
970 *) Make tls1_check_chain return a set of flags indicating checks passed
971 by a certificate chain. Add additional tests to handle client
972 certificates: checks for matching certificate type and issuer name
976 *) If an attempt is made to use a signature algorithm not in the peer
977 preference list abort the handshake. If client has no suitable
978 signature algorithms in response to a certificate request do not
982 *) If server EC tmp key is not in client preference list abort handshake.
985 *) Add support for certificate stores in CERT structure. This makes it
986 possible to have different stores per SSL structure or one store in
987 the parent SSL_CTX. Include distint stores for certificate chain
988 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
989 to build and store a certificate chain in CERT structure: returing
990 an error if the chain cannot be built: this will allow applications
991 to test if a chain is correctly configured.
993 Note: if the CERT based stores are not set then the parent SSL_CTX
994 store is used to retain compatibility with existing behaviour.
998 *) New function ssl_set_client_disabled to set a ciphersuite disabled
999 mask based on the current session, check mask when sending client
1000 hello and checking the requested ciphersuite.
1003 *) New ctrls to retrieve and set certificate types in a certificate
1004 request message. Print out received values in s_client. If certificate
1005 types is not set with custom values set sensible values based on
1006 supported signature algorithms.
1009 *) Support for distinct client and server supported signature algorithms.
1012 *) Add certificate callback. If set this is called whenever a certificate
1013 is required by client or server. An application can decide which
1014 certificate chain to present based on arbitrary criteria: for example
1015 supported signature algorithms. Add very simple example to s_server.
1016 This fixes many of the problems and restrictions of the existing client
1017 certificate callback: for example you can now clear an existing
1018 certificate and specify the whole chain.
1021 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
1022 the certificate can be used for (if anything). Set valid_flags field
1023 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
1024 to have similar checks in it.
1026 Add new "cert_flags" field to CERT structure and include a "strict mode".
1027 This enforces some TLS certificate requirements (such as only permitting
1028 certificate signature algorithms contained in the supported algorithms
1029 extension) which some implementations ignore: this option should be used
1030 with caution as it could cause interoperability issues.
1033 *) Update and tidy signature algorithm extension processing. Work out
1034 shared signature algorithms based on preferences and peer algorithms
1035 and print them out in s_client and s_server. Abort handshake if no
1036 shared signature algorithms.
1039 *) Add new functions to allow customised supported signature algorithms
1040 for SSL and SSL_CTX structures. Add options to s_client and s_server
1044 *) New function SSL_certs_clear() to delete all references to certificates
1045 from an SSL structure. Before this once a certificate had been added
1046 it couldn't be removed.
1049 *) Integrate hostname, email address and IP address checking with certificate
1050 verification. New verify options supporting checking in opensl utility.
1053 *) Fixes and wildcard matching support to hostname and email checking
1054 functions. Add manual page.
1055 [Florian Weimer (Red Hat Product Security Team)]
1057 *) New functions to check a hostname email or IP address against a
1058 certificate. Add options x509 utility to print results of checks against
1062 *) Fix OCSP checking.
1063 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
1065 *) Initial experimental support for explicitly trusted non-root CAs.
1066 OpenSSL still tries to build a complete chain to a root but if an
1067 intermediate CA has a trust setting included that is used. The first
1068 setting is used: whether to trust (e.g., -addtrust option to the x509
1072 *) Add -trusted_first option which attempts to find certificates in the
1073 trusted store even if an untrusted chain is also supplied.
1076 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
1077 platform support for Linux and Android.
1080 *) Support for linux-x32, ILP32 environment in x86_64 framework.
1083 *) Experimental multi-implementation support for FIPS capable OpenSSL.
1084 When in FIPS mode the approved implementations are used as normal,
1085 when not in FIPS mode the internal unapproved versions are used instead.
1086 This means that the FIPS capable OpenSSL isn't forced to use the
1087 (often lower performance) FIPS implementations outside FIPS mode.
1090 *) Transparently support X9.42 DH parameters when calling
1091 PEM_read_bio_DHparameters. This means existing applications can handle
1092 the new parameter format automatically.
1095 *) Initial experimental support for X9.42 DH parameter format: mainly
1096 to support use of 'q' parameter for RFC5114 parameters.
1099 *) Add DH parameters from RFC5114 including test data to dhtest.
1102 *) Support for automatic EC temporary key parameter selection. If enabled
1103 the most preferred EC parameters are automatically used instead of
1104 hardcoded fixed parameters. Now a server just has to call:
1105 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
1106 support ECDH and use the most appropriate parameters.
1109 *) Enhance and tidy EC curve and point format TLS extension code. Use
1110 static structures instead of allocation if default values are used.
1111 New ctrls to set curves we wish to support and to retrieve shared curves.
1112 Print out shared curves in s_server. New options to s_server and s_client
1113 to set list of supported curves.
1116 *) New ctrls to retrieve supported signature algorithms and
1117 supported curve values as an array of NIDs. Extend openssl utility
1118 to print out received values.
1121 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
1122 between NIDs and the more common NIST names such as "P-256". Enhance
1123 ecparam utility and ECC method to recognise the NIST names for curves.
1126 *) Enhance SSL/TLS certificate chain handling to support different
1127 chains for each certificate instead of one chain in the parent SSL_CTX.
1130 *) Support for fixed DH ciphersuite client authentication: where both
1131 server and client use DH certificates with common parameters.
1134 *) Support for fixed DH ciphersuites: those requiring DH server
1138 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
1140 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
1141 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
1142 X509_CINF_get_signature were reverted post internal team review.
1144 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
1146 *) Build fixes for the Windows and OpenVMS platforms
1147 [Matt Caswell and Richard Levitte]
1149 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
1151 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
1152 message can cause a segmentation fault in OpenSSL due to a NULL pointer
1153 dereference. This could lead to a Denial Of Service attack. Thanks to
1154 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
1158 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
1159 dtls1_buffer_record function under certain conditions. In particular this
1160 could occur if an attacker sent repeated DTLS records with the same
1161 sequence number but for the next epoch. The memory leak could be exploited
1162 by an attacker in a Denial of Service attack through memory exhaustion.
1163 Thanks to Chris Mueller for reporting this issue.
1167 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
1168 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
1169 method would be set to NULL which could later result in a NULL pointer
1170 dereference. Thanks to Frank Schmirler for reporting this issue.
1174 *) Abort handshake if server key exchange message is omitted for ephemeral
1177 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
1178 reporting this issue.
1182 *) Remove non-export ephemeral RSA code on client and server. This code
1183 violated the TLS standard by allowing the use of temporary RSA keys in
1184 non-export ciphersuites and could be used by a server to effectively
1185 downgrade the RSA key length used to a value smaller than the server
1186 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
1187 INRIA or reporting this issue.
1191 *) Fixed issue where DH client certificates are accepted without verification.
1192 An OpenSSL server will accept a DH certificate for client authentication
1193 without the certificate verify message. This effectively allows a client to
1194 authenticate without the use of a private key. This only affects servers
1195 which trust a client certificate authority which issues certificates
1196 containing DH keys: these are extremely rare and hardly ever encountered.
1197 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
1202 *) Ensure that the session ID context of an SSL is updated when its
1203 SSL_CTX is updated via SSL_set_SSL_CTX.
1205 The session ID context is typically set from the parent SSL_CTX,
1206 and can vary with the CTX.
1209 *) Fix various certificate fingerprint issues.
1211 By using non-DER or invalid encodings outside the signed portion of a
1212 certificate the fingerprint can be changed without breaking the signature.
1213 Although no details of the signed portion of the certificate can be changed
1214 this can cause problems with some applications: e.g. those using the
1215 certificate fingerprint for blacklists.
1217 1. Reject signatures with non zero unused bits.
1219 If the BIT STRING containing the signature has non zero unused bits reject
1220 the signature. All current signature algorithms require zero unused bits.
1222 2. Check certificate algorithm consistency.
1224 Check the AlgorithmIdentifier inside TBS matches the one in the
1225 certificate signature. NB: this will result in signature failure
1226 errors for some broken certificates.
1228 Thanks to Konrad Kraszewski from Google for reporting this issue.
1230 3. Check DSA/ECDSA signatures use DER.
1232 Reencode DSA/ECDSA signatures and compare with the original received
1233 signature. Return an error if there is a mismatch.
1235 This will reject various cases including garbage after signature
1236 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
1237 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
1238 (negative or with leading zeroes).
1240 Further analysis was conducted and fixes were developed by Stephen Henson
1241 of the OpenSSL core team.
1246 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
1247 results on some platforms, including x86_64. This bug occurs at random
1248 with a very low probability, and is not known to be exploitable in any
1249 way, though its exact impact is difficult to determine. Thanks to Pieter
1250 Wuille (Blockstream) who reported this issue and also suggested an initial
1251 fix. Further analysis was conducted by the OpenSSL development team and
1252 Adam Langley of Google. The final fix was developed by Andy Polyakov of
1253 the OpenSSL core team.
1257 *) Do not resume sessions on the server if the negotiated protocol
1258 version does not match the session's version. Resuming with a different
1259 version, while not strictly forbidden by the RFC, is of questionable
1260 sanity and breaks all known clients.
1261 [David Benjamin, Emilia Käsper]
1263 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
1264 early CCS messages during renegotiation. (Note that because
1265 renegotiation is encrypted, this early CCS was not exploitable.)
1268 *) Tighten client-side session ticket handling during renegotiation:
1269 ensure that the client only accepts a session ticket if the server sends
1270 the extension anew in the ServerHello. Previously, a TLS client would
1271 reuse the old extension state and thus accept a session ticket if one was
1272 announced in the initial ServerHello.
1274 Similarly, ensure that the client requires a session ticket if one
1275 was advertised in the ServerHello. Previously, a TLS client would
1276 ignore a missing NewSessionTicket message.
1279 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
1281 *) SRTP Memory Leak.
1283 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
1284 sends a carefully crafted handshake message, to cause OpenSSL to fail
1285 to free up to 64k of memory causing a memory leak. This could be
1286 exploited in a Denial Of Service attack. This issue affects OpenSSL
1287 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
1288 whether SRTP is used or configured. Implementations of OpenSSL that
1289 have been compiled with OPENSSL_NO_SRTP defined are not affected.
1291 The fix was developed by the OpenSSL team.
1295 *) Session Ticket Memory Leak.
1297 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
1298 integrity of that ticket is first verified. In the event of a session
1299 ticket integrity check failing, OpenSSL will fail to free memory
1300 causing a memory leak. By sending a large number of invalid session
1301 tickets an attacker could exploit this issue in a Denial Of Service
1306 *) Build option no-ssl3 is incomplete.
1308 When OpenSSL is configured with "no-ssl3" as a build option, servers
1309 could accept and complete a SSL 3.0 handshake, and clients could be
1310 configured to send them.
1312 [Akamai and the OpenSSL team]
1314 *) Add support for TLS_FALLBACK_SCSV.
1315 Client applications doing fallback retries should call
1316 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
1318 [Adam Langley, Bodo Moeller]
1320 *) Add additional DigestInfo checks.
1322 Reencode DigestInto in DER and check against the original when
1323 verifying RSA signature: this will reject any improperly encoded
1324 DigestInfo structures.
1326 Note: this is a precautionary measure and no attacks are currently known.
1330 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
1332 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
1333 SRP code can be overrun an internal buffer. Add sanity check that
1334 g, A, B < N to SRP code.
1336 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
1337 Group for discovering this issue.
1341 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
1342 TLS 1.0 instead of higher protocol versions when the ClientHello message
1343 is badly fragmented. This allows a man-in-the-middle attacker to force a
1344 downgrade to TLS 1.0 even if both the server and the client support a
1345 higher protocol version, by modifying the client's TLS records.
1347 Thanks to David Benjamin and Adam Langley (Google) for discovering and
1348 researching this issue.
1352 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
1353 to a denial of service attack. A malicious server can crash the client
1354 with a null pointer dereference (read) by specifying an anonymous (EC)DH
1355 ciphersuite and sending carefully crafted handshake messages.
1357 Thanks to Felix Gröbert (Google) for discovering and researching this
1362 *) By sending carefully crafted DTLS packets an attacker could cause openssl
1363 to leak memory. This can be exploited through a Denial of Service attack.
1364 Thanks to Adam Langley for discovering and researching this issue.
1368 *) An attacker can force openssl to consume large amounts of memory whilst
1369 processing DTLS handshake messages. This can be exploited through a
1370 Denial of Service attack.
1371 Thanks to Adam Langley for discovering and researching this issue.
1375 *) An attacker can force an error condition which causes openssl to crash
1376 whilst processing DTLS packets due to memory being freed twice. This
1377 can be exploited through a Denial of Service attack.
1378 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
1383 *) If a multithreaded client connects to a malicious server using a resumed
1384 session and the server sends an ec point format extension it could write
1385 up to 255 bytes to freed memory.
1387 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
1392 *) A malicious server can crash an OpenSSL client with a null pointer
1393 dereference (read) by specifying an SRP ciphersuite even though it was not
1394 properly negotiated with the client. This can be exploited through a
1395 Denial of Service attack.
1397 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
1398 discovering and researching this issue.
1402 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
1403 X509_name_oneline, X509_name_print_ex et al. to leak some information
1404 from the stack. Applications may be affected if they echo pretty printing
1405 output to the attacker.
1407 Thanks to Ivan Fratric (Google) for discovering this issue.
1409 [Emilia Käsper, and Steve Henson]
1411 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
1412 for corner cases. (Certain input points at infinity could lead to
1413 bogus results, with non-infinity inputs mapped to infinity too.)
1416 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
1418 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
1419 handshake can force the use of weak keying material in OpenSSL
1420 SSL/TLS clients and servers.
1422 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
1423 researching this issue. (CVE-2014-0224)
1424 [KIKUCHI Masashi, Steve Henson]
1426 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
1427 OpenSSL DTLS client the code can be made to recurse eventually crashing
1430 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
1432 [Imre Rad, Steve Henson]
1434 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
1435 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
1436 client or server. This is potentially exploitable to run arbitrary
1437 code on a vulnerable client or server.
1439 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
1440 [Jüri Aedla, Steve Henson]
1442 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
1443 are subject to a denial of service attack.
1445 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
1446 this issue. (CVE-2014-3470)
1447 [Felix Gröbert, Ivan Fratric, Steve Henson]
1449 *) Harmonize version and its documentation. -f flag is used to display
1451 [mancha <mancha1@zoho.com>]
1453 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
1454 in i2d_ECPrivateKey.
1455 [mancha <mancha1@zoho.com>]
1457 *) Fix some double frees. These are not thought to be exploitable.
1458 [mancha <mancha1@zoho.com>]
1460 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
1462 *) A missing bounds check in the handling of the TLS heartbeat extension
1463 can be used to reveal up to 64k of memory to a connected client or
1466 Thanks for Neel Mehta of Google Security for discovering this bug and to
1467 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
1468 preparing the fix (CVE-2014-0160)
1469 [Adam Langley, Bodo Moeller]
1471 *) Fix for the attack described in the paper "Recovering OpenSSL
1472 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
1473 by Yuval Yarom and Naomi Benger. Details can be obtained from:
1474 http://eprint.iacr.org/2014/140
1476 Thanks to Yuval Yarom and Naomi Benger for discovering this
1477 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
1478 [Yuval Yarom and Naomi Benger]
1480 *) TLS pad extension: draft-agl-tls-padding-03
1482 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
1483 TLS client Hello record length value would otherwise be > 255 and
1484 less that 512 pad with a dummy extension containing zeroes so it
1485 is at least 512 bytes long.
1487 [Adam Langley, Steve Henson]
1489 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
1491 *) Fix for TLS record tampering bug. A carefully crafted invalid
1492 handshake could crash OpenSSL with a NULL pointer exception.
1493 Thanks to Anton Johansson for reporting this issues.
1496 *) Keep original DTLS digest and encryption contexts in retransmission
1497 structures so we can use the previous session parameters if they need
1498 to be resent. (CVE-2013-6450)
1501 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
1502 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
1503 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
1504 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
1505 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
1506 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
1507 [Rob Stradling, Adam Langley]
1509 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
1511 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
1512 supporting platforms or when small records were transferred.
1513 [Andy Polyakov, Steve Henson]
1515 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
1517 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
1519 This addresses the flaw in CBC record processing discovered by
1520 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
1521 at: http://www.isg.rhul.ac.uk/tls/
1523 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1524 Security Group at Royal Holloway, University of London
1525 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
1526 Emilia Käsper for the initial patch.
1528 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
1530 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
1531 ciphersuites which can be exploited in a denial of service attack.
1532 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
1533 and detecting this bug and to Wolfgang Ettlinger
1534 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
1538 *) Return an error when checking OCSP signatures when key is NULL.
1539 This fixes a DoS attack. (CVE-2013-0166)
1542 *) Make openssl verify return errors.
1543 [Chris Palmer <palmer@google.com> and Ben Laurie]
1545 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
1546 the right response is stapled. Also change SSL_get_certificate()
1547 so it returns the certificate actually sent.
1548 See http://rt.openssl.org/Ticket/Display.html?id=2836.
1549 [Rob Stradling <rob.stradling@comodo.com>]
1551 *) Fix possible deadlock when decoding public keys.
1554 *) Don't use TLS 1.0 record version number in initial client hello
1558 Changes between 1.0.1b and 1.0.1c [10 May 2012]
1560 *) Sanity check record length before skipping explicit IV in TLS
1561 1.2, 1.1 and DTLS to fix DoS attack.
1563 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
1564 fuzzing as a service testing platform.
1568 *) Initialise tkeylen properly when encrypting CMS messages.
1569 Thanks to Solar Designer of Openwall for reporting this issue.
1572 *) In FIPS mode don't try to use composite ciphers as they are not
1576 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
1578 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
1579 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
1580 mean any application compiled against OpenSSL 1.0.0 headers setting
1581 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng
1582 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
1583 0x10000000L Any application which was previously compiled against
1584 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
1585 will need to be recompiled as a result. Letting be results in
1586 inability to disable specifically TLS 1.1 and in client context,
1587 in unlike event, limit maximum offered version to TLS 1.0 [see below].
1590 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not
1591 disable just protocol X, but all protocols above X *if* there are
1592 protocols *below* X still enabled. In more practical terms it means
1593 that if application wants to disable TLS1.0 in favor of TLS1.1 and
1594 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
1595 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
1599 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
1601 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
1602 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
1603 in CRYPTO_realloc_clean.
1605 Thanks to Tavis Ormandy, Google Security Team, for discovering this
1606 issue and to Adam Langley <agl@chromium.org> for fixing it.
1608 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
1610 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
1613 *) Workarounds for some broken servers that "hang" if a client hello
1614 record length exceeds 255 bytes.
1616 1. Do not use record version number > TLS 1.0 in initial client
1617 hello: some (but not all) hanging servers will now work.
1618 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
1619 the number of ciphers sent in the client hello. This should be
1620 set to an even number, such as 50, for example by passing:
1621 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
1622 Most broken servers should now work.
1623 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
1624 TLS 1.2 client support entirely.
1627 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
1630 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
1632 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
1633 STRING form instead of a DigestInfo.
1636 *) The format used for MDC2 RSA signatures is inconsistent between EVP
1637 and the RSA_sign/RSA_verify functions. This was made more apparent when
1638 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
1639 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
1640 the correct format in RSA_verify so both forms transparently work.
1643 *) Some servers which support TLS 1.0 can choke if we initially indicate
1644 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
1645 encrypted premaster secret. As a workaround use the maximum permitted
1646 client version in client hello, this should keep such servers happy
1647 and still work with previous versions of OpenSSL.
1650 *) Add support for TLS/DTLS heartbeats.
1651 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1653 *) Add support for SCTP.
1654 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1656 *) Improved PRNG seeding for VOS.
1657 [Paul Green <Paul.Green@stratus.com>]
1659 *) Extensive assembler packs updates, most notably:
1661 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
1662 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
1663 - x86_64: bit-sliced AES implementation;
1664 - ARM: NEON support, contemporary platforms optimizations;
1665 - s390x: z196 support;
1666 - *: GHASH and GF(2^m) multiplication implementations;
1670 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
1671 (removal of unnecessary code)
1672 [Peter Sylvester <peter.sylvester@edelweb.fr>]
1674 *) Add TLS key material exporter from RFC 5705.
1677 *) Add DTLS-SRTP negotiation from RFC 5764.
1680 *) Add Next Protocol Negotiation,
1681 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
1682 disabled with a no-npn flag to config or Configure. Code donated
1684 [Adam Langley <agl@google.com> and Ben Laurie]
1686 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
1687 NIST-P256, NIST-P521, with constant-time single point multiplication on
1688 typical inputs. Compiler support for the nonstandard type __uint128_t is
1689 required to use this (present in gcc 4.4 and later, for 64-bit builds).
1690 Code made available under Apache License version 2.0.
1692 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
1693 line to include this in your build of OpenSSL, and run "make depend" (or
1694 "make update"). This enables the following EC_METHODs:
1696 EC_GFp_nistp224_method()
1697 EC_GFp_nistp256_method()
1698 EC_GFp_nistp521_method()
1700 EC_GROUP_new_by_curve_name() will automatically use these (while
1701 EC_GROUP_new_curve_GFp() currently prefers the more flexible
1703 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
1705 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
1706 all platforms. Move ssize_t definition from e_os.h to the public
1707 header file e_os2.h as it now appears in public header file cms.h
1710 *) New -sigopt option to the ca, req and x509 utilities. Additional
1711 signature parameters can be passed using this option and in
1715 *) Add RSA PSS signing function. This will generate and set the
1716 appropriate AlgorithmIdentifiers for PSS based on those in the
1717 corresponding EVP_MD_CTX structure. No application support yet.
1720 *) Support for companion algorithm specific ASN1 signing routines.
1721 New function ASN1_item_sign_ctx() signs a pre-initialised
1722 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
1723 the appropriate parameters.
1726 *) Add new algorithm specific ASN1 verification initialisation function
1727 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
1728 handling will be the same no matter what EVP_PKEY_METHOD is used.
1729 Add a PSS handler to support verification of PSS signatures: checked
1730 against a number of sample certificates.
1733 *) Add signature printing for PSS. Add PSS OIDs.
1734 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
1736 *) Add algorithm specific signature printing. An individual ASN1 method
1737 can now print out signatures instead of the standard hex dump.
1739 More complex signatures (e.g. PSS) can print out more meaningful
1740 information. Include DSA version that prints out the signature
1744 *) Password based recipient info support for CMS library: implementing
1748 *) Split password based encryption into PBES2 and PBKDF2 functions. This
1749 neatly separates the code into cipher and PBE sections and is required
1750 for some algorithms that split PBES2 into separate pieces (such as
1751 password based CMS).
1754 *) Session-handling fixes:
1755 - Fix handling of connections that are resuming with a session ID,
1756 but also support Session Tickets.
1757 - Fix a bug that suppressed issuing of a new ticket if the client
1758 presented a ticket with an expired session.
1759 - Try to set the ticket lifetime hint to something reasonable.
1760 - Make tickets shorter by excluding irrelevant information.
1761 - On the client side, don't ignore renewed tickets.
1762 [Adam Langley, Bodo Moeller (Google)]
1764 *) Fix PSK session representation.
1767 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
1769 This work was sponsored by Intel.
1772 *) Add GCM support to TLS library. Some custom code is needed to split
1773 the IV between the fixed (from PRF) and explicit (from TLS record)
1774 portions. This adds all GCM ciphersuites supported by RFC5288 and
1775 RFC5289. Generalise some AES* cipherstrings to include GCM and
1776 add a special AESGCM string for GCM only.
1779 *) Expand range of ctrls for AES GCM. Permit setting invocation
1780 field on decrypt and retrieval of invocation field only on encrypt.
1783 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
1784 As required by RFC5289 these ciphersuites cannot be used if for
1785 versions of TLS earlier than 1.2.
1788 *) For FIPS capable OpenSSL interpret a NULL default public key method
1789 as unset and return the appropriate default but do *not* set the default.
1790 This means we can return the appropriate method in applications that
1791 switch between FIPS and non-FIPS modes.
1794 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
1795 ENGINE is used then we cannot handle that in the FIPS module so we
1796 keep original code iff non-FIPS operations are allowed.
1799 *) Add -attime option to openssl utilities.
1800 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
1802 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
1805 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
1806 FIPS EC methods unconditionally for now.
1809 *) New build option no-ec2m to disable characteristic 2 code.
1812 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
1813 all cases can be covered as some introduce binary incompatibilities.
1816 *) Redirect RSA operations to FIPS module including keygen,
1817 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
1820 *) Add similar low level API blocking to ciphers.
1823 *) Low level digest APIs are not approved in FIPS mode: any attempt
1824 to use these will cause a fatal error. Applications that *really* want
1825 to use them can use the private_* version instead.
1828 *) Redirect cipher operations to FIPS module for FIPS builds.
1831 *) Redirect digest operations to FIPS module for FIPS builds.
1834 *) Update build system to add "fips" flag which will link in fipscanister.o
1835 for static and shared library builds embedding a signature if needed.
1838 *) Output TLS supported curves in preference order instead of numerical
1839 order. This is currently hardcoded for the highest order curves first.
1840 This should be configurable so applications can judge speed vs strength.
1843 *) Add TLS v1.2 server support for client authentication.
1846 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
1850 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
1851 FIPS modules versions.
1854 *) Add TLS v1.2 client side support for client authentication. Keep cache
1855 of handshake records longer as we don't know the hash algorithm to use
1856 until after the certificate request message is received.
1859 *) Initial TLS v1.2 client support. Add a default signature algorithms
1860 extension including all the algorithms we support. Parse new signature
1861 format in client key exchange. Relax some ECC signing restrictions for
1862 TLS v1.2 as indicated in RFC5246.
1865 *) Add server support for TLS v1.2 signature algorithms extension. Switch
1866 to new signature format when needed using client digest preference.
1867 All server ciphersuites should now work correctly in TLS v1.2. No client
1868 support yet and no support for client certificates.
1871 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
1872 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
1873 ciphersuites. At present only RSA key exchange ciphersuites work with
1874 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
1875 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
1876 and version checking.
1879 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
1880 with this defined it will not be affected by any changes to ssl internal
1881 structures. Add several utility functions to allow openssl application
1882 to work with OPENSSL_NO_SSL_INTERN defined.
1886 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
1888 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
1891 *) Permit abbreviated handshakes when renegotiating using the function
1892 SSL_renegotiate_abbreviated().
1893 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1895 *) Add call to ENGINE_register_all_complete() to
1896 ENGINE_load_builtin_engines(), so some implementations get used
1897 automatically instead of needing explicit application support.
1900 *) Add support for TLS key exporter as described in RFC5705.
1901 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
1903 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
1904 a few changes are required:
1906 Add SSL_OP_NO_TLSv1_1 flag.
1907 Add TLSv1_1 methods.
1908 Update version checking logic to handle version 1.1.
1909 Add explicit IV handling (ported from DTLS code).
1910 Add command line options to s_client/s_server.
1913 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
1915 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
1916 in CMS and PKCS7 code. When RSA decryption fails use a random key for
1917 content decryption and always return the same error. Note: this attack
1918 needs on average 2^20 messages so it only affects automated senders. The
1919 old behaviour can be reenabled in the CMS code by setting the
1920 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
1921 an MMA defence is not necessary.
1922 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
1923 this issue. (CVE-2012-0884)
1926 *) Fix CVE-2011-4619: make sure we really are receiving a
1927 client hello before rejecting multiple SGC restarts. Thanks to
1928 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
1931 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
1933 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
1934 Thanks to Antonio Martin, Enterprise Secure Access Research and
1935 Development, Cisco Systems, Inc. for discovering this bug and
1936 preparing a fix. (CVE-2012-0050)
1939 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
1941 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1942 of the Vaudenay padding oracle attack on CBC mode encryption
1943 which enables an efficient plaintext recovery attack against
1944 the OpenSSL implementation of DTLS. Their attack exploits timing
1945 differences arising during decryption processing. A research
1946 paper describing this attack can be found at:
1947 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1948 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1949 Security Group at Royal Holloway, University of London
1950 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1951 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1952 for preparing the fix. (CVE-2011-4108)
1953 [Robin Seggelmann, Michael Tuexen]
1955 *) Clear bytes used for block padding of SSL 3.0 records.
1957 [Adam Langley (Google)]
1959 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
1960 Kadianakis <desnacked@gmail.com> for discovering this issue and
1961 Adam Langley for preparing the fix. (CVE-2011-4619)
1962 [Adam Langley (Google)]
1964 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
1965 [Andrey Kulikov <amdeich@gmail.com>]
1967 *) Prevent malformed RFC3779 data triggering an assertion failure.
1968 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1969 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1970 [Rob Austein <sra@hactrn.net>]
1972 *) Improved PRNG seeding for VOS.
1973 [Paul Green <Paul.Green@stratus.com>]
1975 *) Fix ssl_ciph.c set-up race.
1976 [Adam Langley (Google)]
1978 *) Fix spurious failures in ecdsatest.c.
1979 [Emilia Käsper (Google)]
1981 *) Fix the BIO_f_buffer() implementation (which was mixing different
1982 interpretations of the '..._len' fields).
1983 [Adam Langley (Google)]
1985 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1986 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1987 threads won't reuse the same blinding coefficients.
1989 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1990 lock to call BN_BLINDING_invert_ex, and avoids one use of
1991 BN_BLINDING_update for each BN_BLINDING structure (previously,
1992 the last update always remained unused).
1993 [Emilia Käsper (Google)]
1995 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
1996 [Bob Buckholz (Google)]
1998 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
2000 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
2001 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
2002 [Kaspar Brand <ossl@velox.ch>]
2004 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
2005 for multi-threaded use of ECDH. (CVE-2011-3210)
2006 [Adam Langley (Google)]
2008 *) Fix x509_name_ex_d2i memory leak on bad inputs.
2011 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
2012 signature public key algorithm by using OID xref utilities instead.
2013 Before this you could only use some ECC ciphersuites with SHA1 only.
2016 *) Add protection against ECDSA timing attacks as mentioned in the paper
2017 by Billy Bob Brumley and Nicola Tuveri, see:
2019 http://eprint.iacr.org/2011/232.pdf
2021 [Billy Bob Brumley and Nicola Tuveri]
2023 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
2025 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
2026 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
2028 *) Fix bug in string printing code: if *any* escaping is enabled we must
2029 escape the escape character (backslash) or the resulting string is
2033 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
2035 *) Disable code workaround for ancient and obsolete Netscape browsers
2036 and servers: an attacker can use it in a ciphersuite downgrade attack.
2037 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
2040 *) Fixed J-PAKE implementation error, originally discovered by
2041 Sebastien Martini, further info and confirmation from Stefan
2042 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
2045 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
2047 *) Fix extension code to avoid race conditions which can result in a buffer
2048 overrun vulnerability: resumed sessions must not be modified as they can
2049 be shared by multiple threads. CVE-2010-3864
2052 *) Fix WIN32 build system to correctly link an ENGINE directory into
2056 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
2058 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
2060 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
2062 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
2064 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
2065 context. The operation can be customised via the ctrl mechanism in
2066 case ENGINEs want to include additional functionality.
2069 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
2072 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
2073 output hashes compatible with older versions of OpenSSL.
2074 [Willy Weisz <weisz@vcpc.univie.ac.at>]
2076 *) Fix compression algorithm handling: if resuming a session use the
2077 compression algorithm of the resumed session instead of determining
2078 it from client hello again. Don't allow server to change algorithm.
2081 *) Add load_crls() function to apps tidying load_certs() too. Add option
2082 to verify utility to allow additional CRLs to be included.
2085 *) Update OCSP request code to permit adding custom headers to the request:
2086 some responders need this.
2089 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
2091 [Julia Lawall <julia@diku.dk>]
2093 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
2094 needlessly dereferenced structures, used obsolete functions and
2095 didn't handle all updated verify codes correctly.
2098 *) Disable MD2 in the default configuration.
2101 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
2102 indicate the initial BIO being pushed or popped. This makes it possible
2103 to determine whether the BIO is the one explicitly called or as a result
2104 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
2105 it handles reference counts correctly and doesn't zero out the I/O bio
2106 when it is not being explicitly popped. WARNING: applications which
2107 included workarounds for the old buggy behaviour will need to be modified
2108 or they could free up already freed BIOs.
2111 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
2112 renaming to all platforms (within the 0.9.8 branch, this was
2113 done conditionally on Netware platforms to avoid a name clash).
2114 [Guenter <lists@gknw.net>]
2116 *) Add ECDHE and PSK support to DTLS.
2117 [Michael Tuexen <tuexen@fh-muenster.de>]
2119 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
2123 *) Add "missing" function EVP_MD_flags() (without this the only way to
2124 retrieve a digest flags is by accessing the structure directly. Update
2125 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
2126 or cipher is registered as in the "from" argument. Print out all
2127 registered digests in the dgst usage message instead of manually
2128 attempting to work them out.
2131 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
2132 this allows the use of compression and extensions. Change default cipher
2133 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
2134 by default unless an application cipher string requests it.
2137 *) Alter match criteria in PKCS12_parse(). It used to try to use local
2138 key ids to find matching certificates and keys but some PKCS#12 files
2139 don't follow the (somewhat unwritten) rules and this strategy fails.
2140 Now just gather all certificates together and the first private key
2141 then look for the first certificate that matches the key.
2144 *) Support use of registered digest and cipher names for dgst and cipher
2145 commands instead of having to add each one as a special case. So now
2152 openssl dgst -sha256 foo
2154 and this works for ENGINE based algorithms too.
2158 *) Update Gost ENGINE to support parameter files.
2159 [Victor B. Wagner <vitus@cryptocom.ru>]
2161 *) Support GeneralizedTime in ca utility.
2162 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
2164 *) Enhance the hash format used for certificate directory links. The new
2165 form uses the canonical encoding (meaning equivalent names will work
2166 even if they aren't identical) and uses SHA1 instead of MD5. This form
2167 is incompatible with the older format and as a result c_rehash should
2168 be used to rebuild symbolic links.
2171 *) Make PKCS#8 the default write format for private keys, replacing the
2172 traditional format. This form is standardised, more secure and doesn't
2173 include an implicit MD5 dependency.
2176 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
2177 committed to OpenSSL should pass this lot as a minimum.
2180 *) Add session ticket override functionality for use by EAP-FAST.
2181 [Jouni Malinen <j@w1.fi>]
2183 *) Modify HMAC functions to return a value. Since these can be implemented
2184 in an ENGINE errors can occur.
2187 *) Type-checked OBJ_bsearch_ex.
2190 *) Type-checked OBJ_bsearch. Also some constification necessitated
2191 by type-checking. Still to come: TXT_DB, bsearch(?),
2192 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
2196 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
2197 seconds to a tm structure directly, instead of going through OS
2198 specific date routines. This avoids any issues with OS routines such
2199 as the year 2038 bug. New *_adj() functions for ASN1 time structures
2200 and X509_time_adj_ex() to cover the extended range. The existing
2201 X509_time_adj() is still usable and will no longer have any date issues.
2204 *) Delta CRL support. New use deltas option which will attempt to locate
2205 and search any appropriate delta CRLs available.
2207 This work was sponsored by Google.
2210 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
2211 code and add additional score elements. Validate alternate CRL paths
2212 as part of the CRL checking and indicate a new error "CRL path validation
2213 error" in this case. Applications wanting additional details can use
2214 the verify callback and check the new "parent" field. If this is not
2215 NULL CRL path validation is taking place. Existing applications wont
2216 see this because it requires extended CRL support which is off by
2219 This work was sponsored by Google.
2222 *) Support for freshest CRL extension.
2224 This work was sponsored by Google.
2227 *) Initial indirect CRL support. Currently only supported in the CRLs
2228 passed directly and not via lookup. Process certificate issuer
2229 CRL entry extension and lookup CRL entries by bother issuer name
2230 and serial number. Check and process CRL issuer entry in IDP extension.
2232 This work was sponsored by Google.
2235 *) Add support for distinct certificate and CRL paths. The CRL issuer
2236 certificate is validated separately in this case. Only enabled if
2237 an extended CRL support flag is set: this flag will enable additional
2238 CRL functionality in future.
2240 This work was sponsored by Google.
2243 *) Add support for policy mappings extension.
2245 This work was sponsored by Google.
2248 *) Fixes to pathlength constraint, self issued certificate handling,
2249 policy processing to align with RFC3280 and PKITS tests.
2251 This work was sponsored by Google.
2254 *) Support for name constraints certificate extension. DN, email, DNS
2255 and URI types are currently supported.
2257 This work was sponsored by Google.
2260 *) To cater for systems that provide a pointer-based thread ID rather
2261 than numeric, deprecate the current numeric thread ID mechanism and
2262 replace it with a structure and associated callback type. This
2263 mechanism allows a numeric "hash" to be extracted from a thread ID in
2264 either case, and on platforms where pointers are larger than 'long',
2265 mixing is done to help ensure the numeric 'hash' is usable even if it
2266 can't be guaranteed unique. The default mechanism is to use "&errno"
2267 as a pointer-based thread ID to distinguish between threads.
2269 Applications that want to provide their own thread IDs should now use
2270 CRYPTO_THREADID_set_callback() to register a callback that will call
2271 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
2273 Note that ERR_remove_state() is now deprecated, because it is tied
2274 to the assumption that thread IDs are numeric. ERR_remove_state(0)
2275 to free the current thread's error state should be replaced by
2276 ERR_remove_thread_state(NULL).
2278 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
2279 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
2280 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
2281 application was previously providing a numeric thread callback that
2282 was inappropriate for distinguishing threads, then uniqueness might
2283 have been obtained with &errno that happened immediately in the
2284 intermediate development versions of OpenSSL; this is no longer the
2285 case, the numeric thread callback will now override the automatic use
2287 [Geoff Thorpe, with help from Bodo Moeller]
2289 *) Initial support for different CRL issuing certificates. This covers a
2290 simple case where the self issued certificates in the chain exist and
2291 the real CRL issuer is higher in the existing chain.
2293 This work was sponsored by Google.
2296 *) Removed effectively defunct crypto/store from the build.
2299 *) Revamp of STACK to provide stronger type-checking. Still to come:
2300 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
2301 ASN1_STRING, CONF_VALUE.
2304 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
2305 RAM on SSL connections. This option can save about 34k per idle SSL.
2308 *) Revamp of LHASH to provide stronger type-checking. Still to come:
2309 STACK, TXT_DB, bsearch, qsort.
2312 *) Initial support for Cryptographic Message Syntax (aka CMS) based
2313 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
2314 support for data, signedData, compressedData, digestedData and
2315 encryptedData, envelopedData types included. Scripts to check against
2316 RFC4134 examples draft and interop and consistency checks of many
2317 content types and variants.
2320 *) Add options to enc utility to support use of zlib compression BIO.
2323 *) Extend mk1mf to support importing of options and assembly language
2324 files from Configure script, currently only included in VC-WIN32.
2325 The assembly language rules can now optionally generate the source
2326 files from the associated perl scripts.
2329 *) Implement remaining functionality needed to support GOST ciphersuites.
2330 Interop testing has been performed using CryptoPro implementations.
2331 [Victor B. Wagner <vitus@cryptocom.ru>]
2333 *) s390x assembler pack.
2336 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
2340 *) Implement Opaque PRF Input TLS extension as specified in
2341 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
2342 official specification yet and no extension type assignment by
2343 IANA exists, this extension (for now) will have to be explicitly
2344 enabled when building OpenSSL by providing the extension number
2345 to use. For example, specify an option
2347 -DTLSEXT_TYPE_opaque_prf_input=0x9527
2349 to the "config" or "Configure" script to enable the extension,
2350 assuming extension number 0x9527 (which is a completely arbitrary
2351 and unofficial assignment based on the MD5 hash of the Internet
2352 Draft). Note that by doing so, you potentially lose
2353 interoperability with other TLS implementations since these might
2354 be using the same extension number for other purposes.
2356 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
2357 opaque PRF input value to use in the handshake. This will create
2358 an interal copy of the length-'len' string at 'src', and will
2359 return non-zero for success.
2361 To get more control and flexibility, provide a callback function
2364 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
2365 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
2369 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
2372 Callback function 'cb' will be called in handshakes, and is
2373 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
2374 Argument 'arg' is for application purposes (the value as given to
2375 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
2376 be provided to the callback function). The callback function
2377 has to return non-zero to report success: usually 1 to use opaque
2378 PRF input just if possible, or 2 to enforce use of the opaque PRF
2379 input. In the latter case, the library will abort the handshake
2380 if opaque PRF input is not successfully negotiated.
2382 Arguments 'peerinput' and 'len' given to the callback function
2383 will always be NULL and 0 in the case of a client. A server will
2384 see the client's opaque PRF input through these variables if
2385 available (NULL and 0 otherwise). Note that if the server
2386 provides an opaque PRF input, the length must be the same as the
2387 length of the client's opaque PRF input.
2389 Note that the callback function will only be called when creating
2390 a new session (session resumption can resume whatever was
2391 previously negotiated), and will not be called in SSL 2.0
2392 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
2393 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
2394 for applications that need to enforce opaque PRF input.
2398 *) Update ssl code to support digests other than SHA1+MD5 for handshake
2401 [Victor B. Wagner <vitus@cryptocom.ru>]
2403 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2404 RFC4507bis. The encrypted ticket format is an encrypted encoded
2405 SSL_SESSION structure, that way new session features are automatically
2408 If a client application caches session in an SSL_SESSION structure
2409 support is transparent because tickets are now stored in the encoded
2412 The SSL_CTX structure automatically generates keys for ticket
2413 protection in servers so again support should be possible
2414 with no application modification.
2416 If a client or server wishes to disable RFC4507 support then the option
2417 SSL_OP_NO_TICKET can be set.
2419 Add a TLS extension debugging callback to allow the contents of any client
2420 or server extensions to be examined.
2422 This work was sponsored by Google.
2425 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
2426 OpenSSL should now compile cleanly on gcc 4.2
2427 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
2429 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
2430 support including streaming MAC support: this is required for GOST
2431 ciphersuite support.
2432 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
2434 *) Add option -stream to use PKCS#7 streaming in smime utility. New
2435 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
2436 to output in BER and PEM format.
2439 *) Experimental support for use of HMAC via EVP_PKEY interface. This
2440 allows HMAC to be handled via the EVP_DigestSign*() interface. The
2441 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
2442 ENGINE support for HMAC keys which are unextractable. New -mac and
2443 -macopt options to dgst utility.
2446 *) New option -sigopt to dgst utility. Update dgst to use
2447 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
2448 alternative signing paramaters such as X9.31 or PSS in the dgst
2452 *) Change ssl_cipher_apply_rule(), the internal function that does
2453 the work each time a ciphersuite string requests enabling
2454 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
2455 removing ("!foo+bar") a class of ciphersuites: Now it maintains
2456 the order of disabled ciphersuites such that those ciphersuites
2457 that most recently went from enabled to disabled not only stay
2458 in order with respect to each other, but also have higher priority
2459 than other disabled ciphersuites the next time ciphersuites are
2462 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
2463 the same ciphersuites as with "HIGH" alone, but in a specific
2464 order where the PSK ciphersuites come first (since they are the
2465 most recently disabled ciphersuites when "HIGH" is parsed).
2467 Also, change ssl_create_cipher_list() (using this new
2468 funcionality) such that between otherwise identical
2469 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
2473 *) Change ssl_create_cipher_list() so that it automatically
2474 arranges the ciphersuites in reasonable order before starting
2475 to process the rule string. Thus, the definition for "DEFAULT"
2476 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
2477 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
2478 This makes it much easier to arrive at a reasonable default order
2479 in applications for which anonymous ciphers are OK (meaning
2480 that you can't actually use DEFAULT).
2481 [Bodo Moeller; suggested by Victor Duchovni]
2483 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
2484 processing) into multiple integers instead of setting
2485 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
2486 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
2487 (These masks as well as the individual bit definitions are hidden
2488 away into the non-exported interface ssl/ssl_locl.h, so this
2489 change to the definition of the SSL_CIPHER structure shouldn't
2490 affect applications.) This give us more bits for each of these
2491 categories, so there is no longer a need to coagulate AES128 and
2492 AES256 into a single algorithm bit, and to coagulate Camellia128
2493 and Camellia256 into a single algorithm bit, which has led to all
2496 Thus, among other things, the kludge introduced in 0.9.7m and
2497 0.9.8e for masking out AES256 independently of AES128 or masking
2498 out Camellia256 independently of AES256 is not needed here in 0.9.9.
2500 With the change, we also introduce new ciphersuite aliases that
2501 so far were missing: "AES128", "AES256", "CAMELLIA128", and
2505 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
2506 Use the leftmost N bytes of the signature input if the input is
2507 larger than the prime q (with N being the size in bytes of q).
2510 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
2511 it yet and it is largely untested.
2514 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
2517 *) Initial incomplete changes to avoid need for function casts in OpenSSL
2518 some compilers (gcc 4.2 and later) reject their use. Safestack is
2519 reimplemented. Update ASN1 to avoid use of legacy functions.
2522 *) Win32/64 targets are linked with Winsock2.
2525 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
2526 to external functions. This can be used to increase CRL handling
2527 efficiency especially when CRLs are very large by (for example) storing
2528 the CRL revoked certificates in a database.
2531 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
2532 new CRLs added to a directory can be used. New command line option
2533 -verify_return_error to s_client and s_server. This causes real errors
2534 to be returned by the verify callback instead of carrying on no matter
2535 what. This reflects the way a "real world" verify callback would behave.
2538 *) GOST engine, supporting several GOST algorithms and public key formats.
2539 Kindly donated by Cryptocom.
2542 *) Partial support for Issuing Distribution Point CRL extension. CRLs
2543 partitioned by DP are handled but no indirect CRL or reason partitioning
2544 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
2545 selected via a scoring technique which handles IDP and AKID in CRLs.
2548 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
2549 will ultimately be used for all verify operations: this will remove the
2550 X509_STORE dependency on certificate verification and allow alternative
2551 lookup methods. X509_STORE based implementations of these two callbacks.
2554 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
2555 Modify get_crl() to find a valid (unexpired) CRL if possible.
2558 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
2559 this would be called X509_CRL_cmp() but that name is already used by
2560 a function that just compares CRL issuer names. Cache several CRL
2561 extensions in X509_CRL structure and cache CRLDP in X509.
2564 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
2565 this maps equivalent X509_NAME structures into a consistent structure.
2566 Name comparison can then be performed rapidly using memcmp().
2569 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
2573 *) Allow digests to supply their own micalg string for S/MIME type using
2574 the ctrl EVP_MD_CTRL_MICALG.
2577 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
2578 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
2579 ctrl. It can then customise the structure before and/or after signing
2583 *) New function OBJ_add_sigid() to allow application defined signature OIDs
2584 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
2585 to free up any added signature OIDs.
2588 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
2589 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
2590 digest and cipher tables. New options added to openssl utility:
2591 list-message-digest-algorithms and list-cipher-algorithms.
2594 *) Change the array representation of binary polynomials: the list
2595 of degrees of non-zero coefficients is now terminated with -1.
2596 Previously it was terminated with 0, which was also part of the
2597 value; thus, the array representation was not applicable to
2598 polynomials where t^0 has coefficient zero. This change makes
2599 the array representation useful in a more general context.
2602 *) Various modifications and fixes to SSL/TLS cipher string
2603 handling. For ECC, the code now distinguishes between fixed ECDH
2604 with RSA certificates on the one hand and with ECDSA certificates
2605 on the other hand, since these are separate ciphersuites. The
2606 unused code for Fortezza ciphersuites has been removed.
2608 For consistency with EDH, ephemeral ECDH is now called "EECDH"
2609 (not "ECDHE"). For consistency with the code for DH
2610 certificates, use of ECDH certificates is now considered ECDH
2611 authentication, not RSA or ECDSA authentication (the latter is
2612 merely the CA's signing algorithm and not actively used in the
2615 The temporary ciphersuite alias "ECCdraft" is no longer
2616 available, and ECC ciphersuites are no longer excluded from "ALL"
2617 and "DEFAULT". The following aliases now exist for RFC 4492
2618 ciphersuites, most of these by analogy with the DH case:
2620 kECDHr - ECDH cert, signed with RSA
2621 kECDHe - ECDH cert, signed with ECDSA
2622 kECDH - ECDH cert (signed with either RSA or ECDSA)
2623 kEECDH - ephemeral ECDH
2624 ECDH - ECDH cert or ephemeral ECDH
2630 AECDH - anonymous ECDH
2631 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
2635 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
2636 Use correct micalg parameters depending on digest(s) in signed message.
2639 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
2640 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
2643 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
2644 an engine to register a method. Add ENGINE lookups for methods and
2645 functional reference processing.
2648 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
2649 EVP_{Sign,Verify}* which allow an application to customise the signature
2653 *) New -resign option to smime utility. This adds one or more signers
2654 to an existing PKCS#7 signedData structure. Also -md option to use an
2655 alternative message digest algorithm for signing.
2658 *) Tidy up PKCS#7 routines and add new functions to make it easier to
2659 create PKCS7 structures containing multiple signers. Update smime
2660 application to support multiple signers.
2663 *) New -macalg option to pkcs12 utility to allow setting of an alternative
2667 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
2668 Reorganize PBE internals to lookup from a static table using NIDs,
2669 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
2670 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
2671 PRF which will be automatically used with PBES2.
2674 *) Replace the algorithm specific calls to generate keys in "req" with the
2678 *) Update PKCS#7 enveloped data routines to use new API. This is now
2679 supported by any public key method supporting the encrypt operation. A
2680 ctrl is added to allow the public key algorithm to examine or modify
2681 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
2685 *) Add a ctrl to asn1 method to allow a public key algorithm to express
2686 a default digest type to use. In most cases this will be SHA1 but some
2687 algorithms (such as GOST) need to specify an alternative digest. The
2688 return value indicates how strong the preference is 1 means optional and
2689 2 is mandatory (that is it is the only supported type). Modify
2690 ASN1_item_sign() to accept a NULL digest argument to indicate it should
2691 use the default md. Update openssl utilities to use the default digest
2692 type for signing if it is not explicitly indicated.
2695 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
2696 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
2697 signing method from the key type. This effectively removes the link
2698 between digests and public key types.
2701 *) Add an OID cross reference table and utility functions. Its purpose is to
2702 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
2703 rsaEncryption. This will allow some of the algorithm specific hackery
2704 needed to use the correct OID to be removed.
2707 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
2708 structures for PKCS7_sign(). They are now set up by the relevant public
2712 *) Add provisional EC pkey method with support for ECDSA and ECDH.
2715 *) Add support for key derivation (agreement) in the API, DH method and
2719 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
2720 public and private key formats. As a side effect these add additional
2721 command line functionality not previously available: DSA signatures can be
2722 generated and verified using pkeyutl and DH key support and generation in
2727 [Oliver Tappe <zooey@hirschkaefer.de>]
2729 *) New make target "install_html_docs" installs HTML renditions of the
2731 [Oliver Tappe <zooey@hirschkaefer.de>]
2733 *) New utility "genpkey" this is analogous to "genrsa" etc except it can
2734 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
2735 support key and parameter generation and add initial key generation
2736 functionality for RSA.
2739 *) Add functions for main EVP_PKEY_method operations. The undocumented
2740 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
2741 EVP_PKEY_{encrypt,decrypt}_old.
2744 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
2745 key API, doesn't do much yet.
2748 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
2749 public key algorithms. New option to openssl utility:
2750 "list-public-key-algorithms" to print out info.
2753 *) Implement the Supported Elliptic Curves Extension for
2754 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
2757 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
2758 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
2761 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
2762 utilities such as rsa, dsa, dsaparam etc except they process any key
2766 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
2767 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
2768 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
2772 *) Initial support for pluggable public key ASN1.
2773 De-spaghettify the public key ASN1 handling. Move public and private
2774 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
2775 algorithm specific handling to a single module within the relevant
2776 algorithm directory. Add functions to allow (near) opaque processing
2777 of public and private key structures.
2780 *) Implement the Supported Point Formats Extension for
2781 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
2784 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
2785 for the psk identity [hint] and the psk callback functions to the
2786 SSL_SESSION, SSL and SSL_CTX structure.
2789 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
2793 SSL_CTX_use_psk_identity_hint
2794 SSL_get_psk_identity_hint
2795 SSL_get_psk_identity
2796 SSL_use_psk_identity_hint
2798 [Mika Kousa and Pasi Eronen of Nokia Corporation]
2800 *) Add RFC 3161 compliant time stamp request creation, response generation
2801 and response verification functionality.
2802 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
2804 *) Add initial support for TLS extensions, specifically for the server_name
2805 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2806 have new members for a host name. The SSL data structure has an
2807 additional member SSL_CTX *initial_ctx so that new sessions can be
2808 stored in that context to allow for session resumption, even after the
2809 SSL has been switched to a new SSL_CTX in reaction to a client's
2810 server_name extension.
2812 New functions (subject to change):
2814 SSL_get_servername()
2815 SSL_get_servername_type()
2818 New CTRL codes and macros (subject to change):
2820 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2821 - SSL_CTX_set_tlsext_servername_callback()
2822 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2823 - SSL_CTX_set_tlsext_servername_arg()
2824 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2826 openssl s_client has a new '-servername ...' option.
2828 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2829 '-key2 ...', '-servername_fatal' (subject to change). This allows
2830 testing the HostName extension for a specific single host name ('-cert'
2831 and '-key' remain fallbacks for handshakes without HostName
2832 negotiation). If the unrecognized_name alert has to be sent, this by
2833 default is a warning; it becomes fatal with the '-servername_fatal'
2836 [Peter Sylvester, Remy Allais, Christophe Renou]
2838 *) Whirlpool hash implementation is added.
2841 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
2842 bn(64,32). Because of instruction set limitations it doesn't have
2843 any negative impact on performance. This was done mostly in order
2844 to make it possible to share assembler modules, such as bn_mul_mont
2845 implementations, between 32- and 64-bit builds without hassle.
2848 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
2849 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
2853 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
2854 dedicated Montgomery multiplication procedure, is introduced.
2855 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
2856 "64-bit" performance on certain 32-bit targets.
2859 *) New option SSL_OP_NO_COMP to disable use of compression selectively
2860 in SSL structures. New SSL ctrl to set maximum send fragment size.
2861 Save memory by seeting the I/O buffer sizes dynamically instead of
2862 using the maximum available value.
2865 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
2866 in addition to the text details.
2869 *) Very, very preliminary EXPERIMENTAL support for printing of general
2870 ASN1 structures. This currently produces rather ugly output and doesn't
2871 handle several customised structures at all.
2874 *) Integrated support for PVK file format and some related formats such
2875 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
2876 these in the 'rsa' and 'dsa' utilities.
2879 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
2882 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
2883 place for the (very old) "NETSCAPE" format certificates which are now
2884 handled using new ASN1 code equivalents.
2887 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
2888 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
2889 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
2892 *) Modify CRL distribution points extension code to print out previously
2893 unsupported fields. Enhance extension setting code to allow setting of
2897 *) Add print and set support for Issuing Distribution Point CRL extension.
2900 *) Change 'Configure' script to enable Camellia by default.
2903 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
2905 *) When rejecting SSL/TLS records due to an incorrect version number, never
2906 update s->server with a new major version number. As of
2907 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
2908 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
2909 the previous behavior could result in a read attempt at NULL when
2910 receiving specific incorrect SSL/TLS records once record payload
2911 protection is active. (CVE-2010-0740)
2912 [Bodo Moeller, Adam Langley <agl@chromium.org>]
2914 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
2915 could be crashed if the relevant tables were not present (e.g. chrooted).
2916 [Tomas Hoger <thoger@redhat.com>]
2918 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
2920 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
2921 [Martin Olsson, Neel Mehta]
2923 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
2924 accommodate for stack sorting, always a write lock!).
2927 *) On some versions of WIN32 Heap32Next is very slow. This can cause
2928 excessive delays in the RAND_poll(): over a minute. As a workaround
2929 include a time check in the inner Heap32Next loop too.
2932 *) The code that handled flushing of data in SSL/TLS originally used the
2933 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
2934 the problem outlined in PR#1949. The fix suggested there however can
2935 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
2936 of Apache). So instead simplify the code to flush unconditionally.
2937 This should be fine since flushing with no data to flush is a no op.
2940 *) Handle TLS versions 2.0 and later properly and correctly use the
2941 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
2942 off ancient servers have a habit of sticking around for a while...
2945 *) Modify compression code so it frees up structures without using the
2946 ex_data callbacks. This works around a problem where some applications
2947 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
2948 restarting) then use compression (e.g. SSL with compression) later.
2949 This results in significant per-connection memory leaks and
2950 has caused some security issues including CVE-2008-1678 and
2954 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
2955 change when encrypting or decrypting.
2958 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
2959 connect and renegotiate with servers which do not support RI.
2960 Until RI is more widely deployed this option is enabled by default.
2963 *) Add "missing" ssl ctrls to clear options and mode.
2966 *) If client attempts to renegotiate and doesn't support RI respond with
2967 a no_renegotiation alert as required by RFC5746. Some renegotiating
2968 TLS clients will continue a connection gracefully when they receive
2969 the alert. Unfortunately OpenSSL mishandled this alert and would hang
2970 waiting for a server hello which it will never receive. Now we treat a
2971 received no_renegotiation alert as a fatal error. This is because
2972 applications requesting a renegotiation might well expect it to succeed
2973 and would have no code in place to handle the server denying it so the
2974 only safe thing to do is to terminate the connection.
2977 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
2978 peer supports secure renegotiation and 0 otherwise. Print out peer
2979 renegotiation support in s_client/s_server.
2982 *) Replace the highly broken and deprecated SPKAC certification method with
2983 the updated NID creation version. This should correctly handle UTF8.
2986 *) Implement RFC5746. Re-enable renegotiation but require the extension
2987 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
2988 turns out to be a bad idea. It has been replaced by
2989 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
2990 SSL_CTX_set_options(). This is really not recommended unless you
2991 know what you are doing.
2992 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
2994 *) Fixes to stateless session resumption handling. Use initial_ctx when
2995 issuing and attempting to decrypt tickets in case it has changed during
2996 servername handling. Use a non-zero length session ID when attempting
2997 stateless session resumption: this makes it possible to determine if
2998 a resumption has occurred immediately after receiving server hello
2999 (several places in OpenSSL subtly assume this) instead of later in
3003 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
3004 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
3005 fixes for a few places where the return code is not checked
3007 [Julia Lawall <julia@diku.dk>]
3009 *) Add --strict-warnings option to Configure script to include devteam
3010 warnings in other configurations.
3013 *) Add support for --libdir option and LIBDIR variable in makefiles. This
3014 makes it possible to install openssl libraries in locations which
3015 have names other than "lib", for example "/usr/lib64" which some
3017 [Steve Henson, based on patch from Jeremy Utley]
3019 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
3020 X690 8.9.12 and can produce some misleading textual output of OIDs.
3021 [Steve Henson, reported by Dan Kaminsky]
3023 *) Delete MD2 from algorithm tables. This follows the recommendation in
3024 several standards that it is not used in new applications due to
3025 several cryptographic weaknesses. For binary compatibility reasons
3026 the MD2 API is still compiled in by default.
3029 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
3033 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
3034 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
3036 [Guenter <lists@gknw.net>]
3038 *) Fix the server certificate chain building code to use X509_verify_cert(),
3039 it used to have an ad-hoc builder which was unable to cope with anything
3040 other than a simple chain.
3041 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
3043 *) Don't check self signed certificate signatures in X509_verify_cert()
3044 by default (a flag can override this): it just wastes time without
3045 adding any security. As a useful side effect self signed root CAs
3046 with non-FIPS digests are now usable in FIPS mode.
3049 *) In dtls1_process_out_of_seq_message() the check if the current message
3050 is already buffered was missing. For every new message was memory
3051 allocated, allowing an attacker to perform an denial of service attack
3052 with sending out of seq handshake messages until there is no memory
3053 left. Additionally every future messege was buffered, even if the
3054 sequence number made no sense and would be part of another handshake.
3055 So only messages with sequence numbers less than 10 in advance will be
3056 buffered. (CVE-2009-1378)
3057 [Robin Seggelmann, discovered by Daniel Mentz]
3059 *) Records are buffered if they arrive with a future epoch to be
3060 processed after finishing the corresponding handshake. There is
3061 currently no limitation to this buffer allowing an attacker to perform
3062 a DOS attack with sending records with future epochs until there is no
3063 memory left. This patch adds the pqueue_size() function to determine
3064 the size of a buffer and limits the record buffer to 100 entries.
3066 [Robin Seggelmann, discovered by Daniel Mentz]
3068 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
3069 parent structure is freed. (CVE-2009-1379)
3072 *) Handle non-blocking I/O properly in SSL_shutdown() call.
3073 [Darryl Miles <darryl-mailinglists@netbauds.net>]
3076 [Ilya O. <vrghost@gmail.com>]
3078 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
3080 *) Disable renegotiation completely - this fixes a severe security
3081 problem (CVE-2009-3555) at the cost of breaking all
3082 renegotiation. Renegotiation can be re-enabled by setting
3083 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
3084 run-time. This is really not recommended unless you know what
3088 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
3090 *) Don't set val to NULL when freeing up structures, it is freed up by
3091 underlying code. If sizeof(void *) > sizeof(long) this can result in
3092 zeroing past the valid field. (CVE-2009-0789)
3093 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
3095 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
3096 checked correctly. This would allow some invalid signed attributes to
3097 appear to verify correctly. (CVE-2009-0591)
3098 [Ivan Nestlerode <inestlerode@us.ibm.com>]
3100 *) Reject UniversalString and BMPString types with invalid lengths. This
3101 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
3102 a legal length. (CVE-2009-0590)
3105 *) Set S/MIME signing as the default purpose rather than setting it
3106 unconditionally. This allows applications to override it at the store
3110 *) Permit restricted recursion of ASN1 strings. This is needed in practice
3111 to handle some structures.
3114 *) Improve efficiency of mem_gets: don't search whole buffer each time
3116 [Jeremy Shapiro <jnshapir@us.ibm.com>]
3118 *) New -hex option for openssl rand.
3121 *) Print out UTF8String and NumericString when parsing ASN1.
3124 *) Support NumericString type for name components.
3127 *) Allow CC in the environment to override the automatically chosen
3128 compiler. Note that nothing is done to ensure flags work with the
3132 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
3134 *) Properly check EVP_VerifyFinal() and similar return values
3136 [Ben Laurie, Bodo Moeller, Google Security Team]
3138 *) Enable TLS extensions by default.
3141 *) Allow the CHIL engine to be loaded, whether the application is
3142 multithreaded or not. (This does not release the developer from the
3143 obligation to set up the dynamic locking callbacks.)
3144 [Sander Temme <sander@temme.net>]
3146 *) Use correct exit code if there is an error in dgst command.
3147 [Steve Henson; problem pointed out by Roland Dirlewanger]
3149 *) Tweak Configure so that you need to say "experimental-jpake" to enable
3150 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
3153 *) Add experimental JPAKE support, including demo authentication in
3154 s_client and s_server.
3157 *) Set the comparison function in v3_addr_canonize().
3158 [Rob Austein <sra@hactrn.net>]
3160 *) Add support for XMPP STARTTLS in s_client.
3161 [Philip Paeps <philip@freebsd.org>]
3163 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
3164 to ensure that even with this option, only ciphersuites in the
3165 server's preference list will be accepted. (Note that the option
3166 applies only when resuming a session, so the earlier behavior was
3167 just about the algorithm choice for symmetric cryptography.)
3170 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
3172 *) Fix NULL pointer dereference if a DTLS server received
3173 ChangeCipherSpec as first record (CVE-2009-1386).
3176 *) Fix a state transition in s3_srvr.c and d1_srvr.c
3177 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
3180 *) The fix in 0.9.8c that supposedly got rid of unsafe
3181 double-checked locking was incomplete for RSA blinding,
3182 addressing just one layer of what turns out to have been
3183 doubly unsafe triple-checked locking.
3185 So now fix this for real by retiring the MONT_HELPER macro
3186 in crypto/rsa/rsa_eay.c.
3188 [Bodo Moeller; problem pointed out by Marius Schilder]
3190 *) Various precautionary measures:
3192 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
3194 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
3195 (NB: This would require knowledge of the secret session ticket key
3196 to exploit, in which case you'd be SOL either way.)
3198 - Change bn_nist.c so that it will properly handle input BIGNUMs
3199 outside the expected range.
3201 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
3204 [Neel Mehta, Bodo Moeller]
3206 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
3207 the load fails. Useful for distros.
3208 [Ben Laurie and the FreeBSD team]
3210 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
3213 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
3216 *) Expand ENGINE to support engine supplied SSL client certificate functions.
3218 This work was sponsored by Logica.
3221 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
3222 keystores. Support for SSL/TLS client authentication too.
3223 Not compiled unless enable-capieng specified to Configure.
3225 This work was sponsored by Logica.
3228 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
3229 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
3230 attribute creation routines such as certifcate requests and PKCS#12
3234 Changes between 0.9.8g and 0.9.8h [28 May 2008]
3236 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
3237 handshake which could lead to a cilent crash as found using the
3238 Codenomicon TLS test suite (CVE-2008-1672)
3239 [Steve Henson, Mark Cox]
3241 *) Fix double free in TLS server name extensions which could lead to
3242 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
3245 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
3247 Clear the error queue to ensure that error entries left from
3248 older function calls do not interfere with the correct operation.
3249 [Lutz Jaenicke, Erik de Castro Lopo]
3251 *) Remove root CA certificates of commercial CAs:
3253 The OpenSSL project does not recommend any specific CA and does not
3254 have any policy with respect to including or excluding any CA.
3255 Therefore it does not make any sense to ship an arbitrary selection
3256 of root CA certificates with the OpenSSL software.
3259 *) RSA OAEP patches to fix two separate invalid memory reads.
3260 The first one involves inputs when 'lzero' is greater than
3261 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
3262 before the beginning of from). The second one involves inputs where
3263 the 'db' section contains nothing but zeroes (there is a one-byte
3264 invalid read after the end of 'db').
3265 [Ivan Nestlerode <inestlerode@us.ibm.com>]
3267 *) Partial backport from 0.9.9-dev:
3269 Introduce bn_mul_mont (dedicated Montgomery multiplication
3270 procedure) as a candidate for BIGNUM assembler implementation.
3271 While 0.9.9-dev uses assembler for various architectures, only
3272 x86_64 is available by default here in the 0.9.8 branch, and
3273 32-bit x86 is available through a compile-time setting.
3275 To try the 32-bit x86 assembler implementation, use Configure
3276 option "enable-montasm" (which exists only for this backport).
3278 As "enable-montasm" for 32-bit x86 disclaims code stability
3279 anyway, in this constellation we activate additional code
3280 backported from 0.9.9-dev for further performance improvements,
3281 namely BN_from_montgomery_word. (To enable this otherwise,
3282 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
3284 [Andy Polyakov (backport partially by Bodo Moeller)]
3286 *) Add TLS session ticket callback. This allows an application to set
3287 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
3288 values. This is useful for key rollover for example where several key
3289 sets may exist with different names.
3292 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
3293 This was broken until now in 0.9.8 releases, such that the only way
3294 a registered ENGINE could be used (assuming it initialises
3295 successfully on the host) was to explicitly set it as the default
3296 for the relevant algorithms. This is in contradiction with 0.9.7
3297 behaviour and the documentation. With this fix, when an ENGINE is
3298 registered into a given algorithm's table of implementations, the
3299 'uptodate' flag is reset so that auto-discovery will be used next
3300 time a new context for that algorithm attempts to select an
3302 [Ian Lister (tweaked by Geoff Thorpe)]
3304 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
3305 implemention in the following ways:
3307 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
3310 Lack of BER streaming support means one pass streaming processing is
3311 only supported if data is detached: setting the streaming flag is
3312 ignored for embedded content.
3314 CMS support is disabled by default and must be explicitly enabled
3315 with the enable-cms configuration option.
3318 *) Update the GMP engine glue to do direct copies between BIGNUM and
3319 mpz_t when openssl and GMP use the same limb size. Otherwise the
3320 existing "conversion via a text string export" trick is still used.
3321 [Paul Sheer <paulsheer@gmail.com>]
3323 *) Zlib compression BIO. This is a filter BIO which compressed and
3324 uncompresses any data passed through it.
3327 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
3328 RFC3394 compatible AES key wrapping.
3331 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
3332 sets string data without copying. X509_ALGOR_set0() and
3333 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
3334 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
3335 from an X509_ATTRIBUTE structure optionally checking it occurs only
3336 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
3340 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
3341 to get the expected BN_FLG_CONSTTIME behavior.
3342 [Bodo Moeller (Google)]
3346 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
3347 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
3348 - added some more tests to do_tests.pl
3349 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
3350 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
3351 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
3352 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
3353 - various changes to netware.pl to enable gcc-cross builds on Win32
3355 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
3356 - various changes to fix missing prototype warnings
3357 - fixed x86nasm.pl to create correct asm files for NASM COFF output
3358 - added AES, WHIRLPOOL and CPUID assembler code to build files
3359 - added missing AES assembler make rules to mk1mf.pl
3360 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
3361 [Guenter Knauf <eflash@gmx.net>]
3363 *) Implement certificate status request TLS extension defined in RFC3546.
3364 A client can set the appropriate parameters and receive the encoded
3365 OCSP response via a callback. A server can query the supplied parameters
3366 and set the encoded OCSP response in the callback. Add simplified examples
3367 to s_client and s_server.
3370 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
3372 *) Fix various bugs:
3373 + Binary incompatibility of ssl_ctx_st structure
3374 + DTLS interoperation with non-compliant servers
3375 + Don't call get_session_cb() without proposed session
3376 + Fix ia64 assembler code
3377 [Andy Polyakov, Steve Henson]
3379 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
3381 *) DTLS Handshake overhaul. There were longstanding issues with
3382 OpenSSL DTLS implementation, which were making it impossible for
3383 RFC 4347 compliant client to communicate with OpenSSL server.
3384 Unfortunately just fixing these incompatibilities would "cut off"
3385 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
3386 server keeps tolerating non RFC compliant syntax. The opposite is
3387 not true, 0.9.8f client can not communicate with earlier server.
3388 This update even addresses CVE-2007-4995.
3391 *) Changes to avoid need for function casts in OpenSSL: some compilers
3392 (gcc 4.2 and later) reject their use.
3393 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
3396 *) Add RFC4507 support to OpenSSL. This includes the corrections in
3397 RFC4507bis. The encrypted ticket format is an encrypted encoded
3398 SSL_SESSION structure, that way new session features are automatically
3401 If a client application caches session in an SSL_SESSION structure
3402 support is transparent because tickets are now stored in the encoded
3405 The SSL_CTX structure automatically generates keys for ticket
3406 protection in servers so again support should be possible
3407 with no application modification.
3409 If a client or server wishes to disable RFC4507 support then the option
3410 SSL_OP_NO_TICKET can be set.
3412 Add a TLS extension debugging callback to allow the contents of any client
3413 or server extensions to be examined.
3415 This work was sponsored by Google.
3418 *) Add initial support for TLS extensions, specifically for the server_name
3419 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
3420 have new members for a host name. The SSL data structure has an
3421 additional member SSL_CTX *initial_ctx so that new sessions can be
3422 stored in that context to allow for session resumption, even after the
3423 SSL has been switched to a new SSL_CTX in reaction to a client's
3424 server_name extension.
3426 New functions (subject to change):
3428 SSL_get_servername()
3429 SSL_get_servername_type()
3432 New CTRL codes and macros (subject to change):
3434 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
3435 - SSL_CTX_set_tlsext_servername_callback()
3436 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
3437 - SSL_CTX_set_tlsext_servername_arg()
3438 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
3440 openssl s_client has a new '-servername ...' option.
3442 openssl s_server has new options '-servername_host ...', '-cert2 ...',
3443 '-key2 ...', '-servername_fatal' (subject to change). This allows
3444 testing the HostName extension for a specific single host name ('-cert'
3445 and '-key' remain fallbacks for handshakes without HostName
3446 negotiation). If the unrecognized_name alert has to be sent, this by
3447 default is a warning; it becomes fatal with the '-servername_fatal'
3450 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
3452 *) Add AES and SSE2 assembly language support to VC++ build.
3455 *) Mitigate attack on final subtraction in Montgomery reduction.
3458 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
3459 (which previously caused an internal error).
3462 *) Squeeze another 10% out of IGE mode when in != out.
3465 *) AES IGE mode speedup.
3466 [Dean Gaudet (Google)]
3468 *) Add the Korean symmetric 128-bit cipher SEED (see
3469 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
3470 add SEED ciphersuites from RFC 4162:
3472 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
3473 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
3474 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
3475 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
3477 To minimize changes between patchlevels in the OpenSSL 0.9.8
3478 series, SEED remains excluded from compilation unless OpenSSL
3479 is configured with 'enable-seed'.
3480 [KISA, Bodo Moeller]
3482 *) Mitigate branch prediction attacks, which can be practical if a
3483 single processor is shared, allowing a spy process to extract
3484 information. For detailed background information, see
3485 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
3486 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
3487 and Necessary Software Countermeasures"). The core of the change
3488 are new versions BN_div_no_branch() and
3489 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
3490 respectively, which are slower, but avoid the security-relevant
3491 conditional branches. These are automatically called by BN_div()
3492 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
3493 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
3494 remove a conditional branch.
3496 BN_FLG_CONSTTIME is the new name for the previous
3497 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
3498 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
3499 in the exponent causes BN_mod_exp_mont() to use the alternative
3500 implementation in BN_mod_exp_mont_consttime().) The old name
3501 remains as a deprecated alias.
3503 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
3504 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
3505 constant-time implementations for more than just exponentiation.
3506 Here too the old name is kept as a deprecated alias.
3508 BN_BLINDING_new() will now use BN_dup() for the modulus so that
3509 the BN_BLINDING structure gets an independent copy of the
3510 modulus. This means that the previous "BIGNUM *m" argument to
3511 BN_BLINDING_new() and to BN_BLINDING_create_param() now
3512 essentially becomes "const BIGNUM *m", although we can't actually
3513 change this in the header file before 0.9.9. It allows
3514 RSA_setup_blinding() to use BN_with_flags() on the modulus to
3515 enable BN_FLG_CONSTTIME.
3517 [Matthew D Wood (Intel Corp)]
3519 *) In the SSL/TLS server implementation, be strict about session ID
3520 context matching (which matters if an application uses a single
3521 external cache for different purposes). Previously,
3522 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
3523 set. This did ensure strict client verification, but meant that,
3524 with applications using a single external cache for quite
3525 different requirements, clients could circumvent ciphersuite
3526 restrictions for a given session ID context by starting a session
3527 in a different context.
3530 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3531 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3532 authentication-only ciphersuites.
3535 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
3536 not complete and could lead to a possible single byte overflow
3537 (CVE-2007-5135) [Ben Laurie]
3539 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
3541 *) Since AES128 and AES256 (and similarly Camellia128 and
3542 Camellia256) share a single mask bit in the logic of
3543 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3544 kludge to work properly if AES128 is available and AES256 isn't
3545 (or if Camellia128 is available and Camellia256 isn't).
3548 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
3549 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
3550 When a point or a seed is encoded in a BIT STRING, we need to
3551 prevent the removal of trailing zero bits to get the proper DER
3552 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
3553 of a NamedBitList, for which trailing 0 bits need to be removed.)
3556 *) Have SSL/TLS server implementation tolerate "mismatched" record
3557 protocol version while receiving ClientHello even if the
3558 ClientHello is fragmented. (The server can't insist on the
3559 particular protocol version it has chosen before the ServerHello
3560 message has informed the client about his choice.)
3563 *) Add RFC 3779 support.
3564 [Rob Austein for ARIN, Ben Laurie]
3566 *) Load error codes if they are not already present instead of using a
3567 static variable. This allows them to be cleanly unloaded and reloaded.
3568 Improve header file function name parsing.
3571 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
3572 or CAPABILITY handshake as required by RFCs.
3575 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
3577 *) Introduce limits to prevent malicious keys being able to
3578 cause a denial of service. (CVE-2006-2940)
3579 [Steve Henson, Bodo Moeller]
3581 *) Fix ASN.1 parsing of certain invalid structures that can result
3582 in a denial of service. (CVE-2006-2937) [Steve Henson]
3584 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3585 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3587 *) Fix SSL client code which could crash if connecting to a
3588 malicious SSLv2 server. (CVE-2006-4343)
3589 [Tavis Ormandy and Will Drewry, Google Security Team]
3591 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
3592 match only those. Before that, "AES256-SHA" would be interpreted
3593 as a pattern and match "AES128-SHA" too (since AES128-SHA got
3594 the same strength classification in 0.9.7h) as we currently only
3595 have a single AES bit in the ciphersuite description bitmap.
3596 That change, however, also applied to ciphersuite strings such as
3597 "RC4-MD5" that intentionally matched multiple ciphersuites --
3598 namely, SSL 2.0 ciphersuites in addition to the more common ones
3599 from SSL 3.0/TLS 1.0.
3601 So we change the selection algorithm again: Naming an explicit
3602 ciphersuite selects this one ciphersuite, and any other similar
3603 ciphersuite (same bitmap) from *other* protocol versions.
3604 Thus, "RC4-MD5" again will properly select both the SSL 2.0
3605 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
3607 Since SSL 2.0 does not have any ciphersuites for which the
3608 128/256 bit distinction would be relevant, this works for now.
3609 The proper fix will be to use different bits for AES128 and
3610 AES256, which would have avoided the problems from the beginning;
3611 however, bits are scarce, so we can only do this in a new release
3612 (not just a patchlevel) when we can change the SSL_CIPHER
3613 definition to split the single 'unsigned long mask' bitmap into
3614 multiple values to extend the available space.
3618 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
3620 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3621 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3623 *) Add AES IGE and biIGE modes.
3626 *) Change the Unix randomness entropy gathering to use poll() when
3627 possible instead of select(), since the latter has some
3628 undesirable limitations.
3629 [Darryl Miles via Richard Levitte and Bodo Moeller]
3631 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
3632 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
3633 cannot be implicitly activated as part of, e.g., the "AES" alias.
3634 However, please upgrade to OpenSSL 0.9.9[-dev] for
3635 non-experimental use of the ECC ciphersuites to get TLS extension
3636 support, which is required for curve and point format negotiation
3637 to avoid potential handshake problems.
3640 *) Disable rogue ciphersuites:
3642 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3643 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3644 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3646 The latter two were purportedly from
3647 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3650 Also deactivate the remaining ciphersuites from
3651 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3652 unofficial, and the ID has long expired.
3655 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3656 dual-core machines) and other potential thread-safety issues.
3659 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
3660 versions), which is now available for royalty-free use
3661 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
3662 Also, add Camellia TLS ciphersuites from RFC 4132.
3664 To minimize changes between patchlevels in the OpenSSL 0.9.8
3665 series, Camellia remains excluded from compilation unless OpenSSL
3666 is configured with 'enable-camellia'.
3669 *) Disable the padding bug check when compression is in use. The padding
3670 bug check assumes the first packet is of even length, this is not
3671 necessarily true if compresssion is enabled and can result in false
3672 positives causing handshake failure. The actual bug test is ancient
3673 code so it is hoped that implementations will either have fixed it by
3674 now or any which still have the bug do not support compression.
3677 Changes between 0.9.8a and 0.9.8b [04 May 2006]
3679 *) When applying a cipher rule check to see if string match is an explicit
3680 cipher suite and only match that one cipher suite if it is.
3683 *) Link in manifests for VC++ if needed.
3684 [Austin Ziegler <halostatue@gmail.com>]
3686 *) Update support for ECC-based TLS ciphersuites according to
3687 draft-ietf-tls-ecc-12.txt with proposed changes (but without
3688 TLS extensions, which are supported starting with the 0.9.9
3689 branch, not in the OpenSSL 0.9.8 branch).
3692 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
3693 opaque EVP_CIPHER_CTX handling.
3696 *) Fixes and enhancements to zlib compression code. We now only use
3697 "zlib1.dll" and use the default __cdecl calling convention on Win32
3698 to conform with the standards mentioned here:
3699 http://www.zlib.net/DLL_FAQ.txt
3700 Static zlib linking now works on Windows and the new --with-zlib-include
3701 --with-zlib-lib options to Configure can be used to supply the location
3702 of the headers and library. Gracefully handle case where zlib library
3706 *) Several fixes and enhancements to the OID generation code. The old code
3707 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
3708 handle numbers larger than ULONG_MAX, truncated printing and had a
3709 non standard OBJ_obj2txt() behaviour.
3712 *) Add support for building of engines under engine/ as shared libraries
3713 under VC++ build system.
3716 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
3717 Hopefully, we will not see any false combination of paths any more.
3720 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
3722 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3723 (part of SSL_OP_ALL). This option used to disable the
3724 countermeasure against man-in-the-middle protocol-version
3725 rollback in the SSL 2.0 server implementation, which is a bad
3726 idea. (CVE-2005-2969)
3728 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3729 for Information Security, National Institute of Advanced Industrial
3730 Science and Technology [AIST], Japan)]
3732 *) Add two function to clear and return the verify parameter flags.
3735 *) Keep cipherlists sorted in the source instead of sorting them at
3736 runtime, thus removing the need for a lock.
3739 *) Avoid some small subgroup attacks in Diffie-Hellman.
3740 [Nick Mathewson and Ben Laurie]
3742 *) Add functions for well-known primes.
3745 *) Extended Windows CE support.
3746 [Satoshi Nakamura and Andy Polyakov]
3748 *) Initialize SSL_METHOD structures at compile time instead of during
3749 runtime, thus removing the need for a lock.
3752 *) Make PKCS7_decrypt() work even if no certificate is supplied by
3753 attempting to decrypt each encrypted key in turn. Add support to
3757 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
3759 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
3762 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
3765 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
3766 key into the same file any more.
3769 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
3772 *) Add -utf8 command line and config file option to 'ca'.
3773 [Stefan <stf@udoma.org]
3775 *) Removed the macro des_crypt(), as it seems to conflict with some
3776 libraries. Use DES_crypt().
3779 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
3780 involves renaming the source and generated shared-libs for
3781 both. The engines will accept the corrected or legacy ids
3782 ('ncipher' and '4758_cca' respectively) when binding. NB,
3783 this only applies when building 'shared'.
3784 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
3786 *) Add attribute functions to EVP_PKEY structure. Modify
3787 PKCS12_create() to recognize a CSP name attribute and
3788 use it. Make -CSP option work again in pkcs12 utility.
3791 *) Add new functionality to the bn blinding code:
3792 - automatic re-creation of the BN_BLINDING parameters after
3793 a fixed number of uses (currently 32)
3794 - add new function for parameter creation
3795 - introduce flags to control the update behaviour of the
3796 BN_BLINDING parameters
3797 - hide BN_BLINDING structure
3798 Add a second BN_BLINDING slot to the RSA structure to improve
3799 performance when a single RSA object is shared among several
3803 *) Add support for DTLS.
3804 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
3806 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
3807 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
3810 *) Remove buggy and incomplete DH cert support from
3811 ssl/ssl_rsa.c and ssl/s3_both.c
3814 *) Use SHA-1 instead of MD5 as the default digest algorithm for
3815 the apps/openssl applications.
3818 *) Compile clean with "-Wall -Wmissing-prototypes
3819 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
3820 DEBUG_SAFESTACK must also be set.
3823 *) Change ./Configure so that certain algorithms can be disabled by default.
3824 The new counterpiece to "no-xxx" is "enable-xxx".
3826 The patented RC5 and MDC2 algorithms will now be disabled unless
3827 "enable-rc5" and "enable-mdc2", respectively, are specified.
3829 (IDEA remains enabled despite being patented. This is because IDEA
3830 is frequently required for interoperability, and there is no license
3831 fee for non-commercial use. As before, "no-idea" can be used to
3832 avoid this algorithm.)
3836 *) Add processing of proxy certificates (see RFC 3820). This work was
3837 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
3838 EGEE (Enabling Grids for E-science in Europe).
3841 *) RC4 performance overhaul on modern architectures/implementations, such
3842 as Intel P4, IA-64 and AMD64.
3845 *) New utility extract-section.pl. This can be used specify an alternative
3846 section number in a pod file instead of having to treat each file as
3847 a separate case in Makefile. This can be done by adding two lines to the
3850 =for comment openssl_section:XXX
3852 The blank line is mandatory.
3856 *) New arguments -certform, -keyform and -pass for s_client and s_server
3857 to allow alternative format key and certificate files and passphrase
3861 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
3862 update associated structures and add various utility functions.
3864 Add new policy related verify parameters, include policy checking in
3865 standard verify code. Enhance 'smime' application with extra parameters
3866 to support policy checking and print out.
3869 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
3870 Nehemiah processors. These extensions support AES encryption in hardware
3871 as well as RNG (though RNG support is currently disabled).
3872 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
3874 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
3877 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
3878 [Andy Polyakov and a number of other people]
3880 *) Improved PowerPC platform support. Most notably BIGNUM assembler
3881 implementation contributed by IBM.
3882 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
3884 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
3885 exponent rather than 'unsigned long'. There is a corresponding change to
3886 the new 'rsa_keygen' element of the RSA_METHOD structure.
3887 [Jelte Jansen, Geoff Thorpe]
3889 *) Functionality for creating the initial serial number file is now
3890 moved from CA.pl to the 'ca' utility with a new option -create_serial.
3892 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
3893 number file to 1, which is bound to cause problems. To avoid
3894 the problems while respecting compatibility between different 0.9.7
3895 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
3896 CA.pl for serial number initialization. With the new release 0.9.8,
3897 we can fix the problem directly in the 'ca' utility.)
3900 *) Reduced header interdepencies by declaring more opaque objects in
3901 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
3902 give fewer recursive includes, which could break lazy source code - so
3903 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
3904 developers should define this symbol when building and using openssl to
3905 ensure they track the recommended behaviour, interfaces, [etc], but
3906 backwards-compatible behaviour prevails when this isn't defined.
3909 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
3912 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
3913 This will generate a random key of the appropriate length based on the
3914 cipher context. The EVP_CIPHER can provide its own random key generation
3915 routine to support keys of a specific form. This is used in the des and
3916 3des routines to generate a key of the correct parity. Update S/MIME
3917 code to use new functions and hence generate correct parity DES keys.
3918 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
3919 valid (weak or incorrect parity).
3922 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
3923 as looking them up. This is useful when the verified structure may contain
3924 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
3925 present unless the new PKCS7_NO_CRL flag is asserted.
3928 *) Extend ASN1 oid configuration module. It now additionally accepts the
3931 shortName = some long name, 1.2.3.4
3934 *) Reimplemented the BN_CTX implementation. There is now no more static
3935 limitation on the number of variables it can handle nor the depth of the
3936 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
3937 information can now expand as required, and rather than having a single
3938 static array of bignums, BN_CTX now uses a linked-list of such arrays
3939 allowing it to expand on demand whilst maintaining the usefulness of
3940 BN_CTX's "bundling".
3943 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
3944 to allow all RSA operations to function using a single BN_CTX.
3947 *) Preliminary support for certificate policy evaluation and checking. This
3948 is initially intended to pass the tests outlined in "Conformance Testing
3949 of Relying Party Client Certificate Path Processing Logic" v1.07.
3952 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
3953 remained unused and not that useful. A variety of other little bignum
3954 tweaks and fixes have also been made continuing on from the audit (see
3958 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
3959 associated ASN1, EVP and SSL functions and old ASN1 macros.
3962 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
3963 and this should never fail. So the return value from the use of
3964 BN_set_word() (which can fail due to needless expansion) is now deprecated;
3965 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
3968 *) BN_CTX_get() should return zero-valued bignums, providing the same
3969 initialised value as BN_new().
3970 [Geoff Thorpe, suggested by Ulf Möller]
3972 *) Support for inhibitAnyPolicy certificate extension.
3975 *) An audit of the BIGNUM code is underway, for which debugging code is
3976 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
3977 is considered valid when processing BIGNUMs, and causes execution to
3978 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
3979 further steps are taken to deliberately pollute unused data in BIGNUM
3980 structures to try and expose faulty code further on. For now, openssl will
3981 (in its default mode of operation) continue to tolerate the inconsistent
3982 forms that it has tolerated in the past, but authors and packagers should
3983 consider trying openssl and their own applications when compiled with
3984 these debugging symbols defined. It will help highlight potential bugs in
3985 their own code, and will improve the test coverage for OpenSSL itself. At
3986 some point, these tighter rules will become openssl's default to improve
3987 maintainability, though the assert()s and other overheads will remain only
3988 in debugging configurations. See bn.h for more details.
3989 [Geoff Thorpe, Nils Larsch, Ulf Möller]
3991 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
3992 that can only be obtained through BN_CTX_new() (which implicitly
3993 initialises it). The presence of this function only made it possible
3994 to overwrite an existing structure (and cause memory leaks).
3997 *) Because of the callback-based approach for implementing LHASH as a
3998 template type, lh_insert() adds opaque objects to hash-tables and
3999 lh_doall() or lh_doall_arg() are typically used with a destructor callback
4000 to clean up those corresponding objects before destroying the hash table
4001 (and losing the object pointers). So some over-zealous constifications in
4002 LHASH have been relaxed so that lh_insert() does not take (nor store) the
4003 objects as "const" and the lh_doall[_arg] callback wrappers are not
4004 prototyped to have "const" restrictions on the object pointers they are
4005 given (and so aren't required to cast them away any more).
4008 *) The tmdiff.h API was so ugly and minimal that our own timing utility
4009 (speed) prefers to use its own implementation. The two implementations
4010 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
4011 its object type properly exposed (MS_TM) instead of casting to/from "char
4012 *". This may still change yet if someone realises MS_TM and "ms_time_***"
4013 aren't necessarily the greatest nomenclatures - but this is what was used
4014 internally to the implementation so I've used that for now.
4017 *) Ensure that deprecated functions do not get compiled when
4018 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
4019 the self-tests were still using deprecated key-generation functions so
4020 these have been updated also.
4023 *) Reorganise PKCS#7 code to separate the digest location functionality
4024 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
4025 New function PKCS7_set_digest() to set the digest type for PKCS#7
4026 digestedData type. Add additional code to correctly generate the
4027 digestedData type and add support for this type in PKCS7 initialization
4031 *) New function PKCS7_set0_type_other() this initializes a PKCS7
4032 structure of type "other".
4035 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
4036 sure the loop does correctly stop and breaking ("division by zero")
4037 modulus operations are not performed. The (pre-generated) prime
4038 table crypto/bn/bn_prime.h was already correct, but it could not be
4039 re-generated on some platforms because of the "division by zero"
4040 situation in the script.
4041 [Ralf S. Engelschall]
4043 *) Update support for ECC-based TLS ciphersuites according to
4044 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
4045 SHA-1 now is only used for "small" curves (where the
4046 representation of a field element takes up to 24 bytes); for
4047 larger curves, the field element resulting from ECDH is directly
4048 used as premaster secret.
4049 [Douglas Stebila (Sun Microsystems Laboratories)]
4051 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
4052 curve secp160r1 to the tests.
4053 [Douglas Stebila (Sun Microsystems Laboratories)]
4055 *) Add the possibility to load symbols globally with DSO.
4056 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
4058 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
4059 control of the error stack.
4062 *) Add support for STORE in ENGINE.
4065 *) Add the STORE type. The intention is to provide a common interface
4066 to certificate and key stores, be they simple file-based stores, or
4067 HSM-type store, or LDAP stores, or...
4068 NOTE: The code is currently UNTESTED and isn't really used anywhere.
4071 *) Add a generic structure called OPENSSL_ITEM. This can be used to
4072 pass a list of arguments to any function as well as provide a way
4073 for a function to pass data back to the caller.
4076 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
4077 works like BUF_strdup() but can be used to duplicate a portion of
4078 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
4082 *) Add the function sk_find_ex() which works like sk_find(), but will
4083 return an index to an element even if an exact match couldn't be
4084 found. The index is guaranteed to point at the element where the
4085 searched-for key would be inserted to preserve sorting order.
4088 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
4089 takes an extra flags argument for optional functionality. Currently,
4090 the following flags are defined:
4092 OBJ_BSEARCH_VALUE_ON_NOMATCH
4093 This one gets OBJ_bsearch_ex() to return a pointer to the first
4094 element where the comparing function returns a negative or zero
4097 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
4098 This one gets OBJ_bsearch_ex() to return a pointer to the first
4099 element where the comparing function returns zero. This is useful
4100 if there are more than one element where the comparing function
4104 *) Make it possible to create self-signed certificates with 'openssl ca'
4105 in such a way that the self-signed certificate becomes part of the
4106 CA database and uses the same mechanisms for serial number generation
4107 as all other certificate signing. The new flag '-selfsign' enables
4108 this functionality. Adapt CA.sh and CA.pl.in.
4111 *) Add functionality to check the public key of a certificate request
4112 against a given private. This is useful to check that a certificate
4113 request can be signed by that key (self-signing).
4116 *) Make it possible to have multiple active certificates with the same
4117 subject in the CA index file. This is done only if the keyword
4118 'unique_subject' is set to 'no' in the main CA section (default
4119 if 'CA_default') of the configuration file. The value is saved
4120 with the database itself in a separate index attribute file,
4121 named like the index file with '.attr' appended to the name.
4124 *) Generate muti valued AVAs using '+' notation in config files for
4128 *) Support for nameConstraints certificate extension.
4131 *) Support for policyConstraints certificate extension.
4134 *) Support for policyMappings certificate extension.
4137 *) Make sure the default DSA_METHOD implementation only uses its
4138 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
4139 and change its own handlers to be NULL so as to remove unnecessary
4140 indirection. This lets alternative implementations fallback to the
4141 default implementation more easily.
4144 *) Support for directoryName in GeneralName related extensions
4148 *) Make it possible to link applications using Makefile.shared.
4149 Make that possible even when linking against static libraries!
4152 *) Support for single pass processing for S/MIME signing. This now
4153 means that S/MIME signing can be done from a pipe, in addition
4154 cleartext signing (multipart/signed type) is effectively streaming
4155 and the signed data does not need to be all held in memory.
4157 This is done with a new flag PKCS7_STREAM. When this flag is set
4158 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
4159 is done after the data is output (and digests calculated) in
4160 SMIME_write_PKCS7().
4163 *) Add full support for -rpath/-R, both in shared libraries and
4164 applications, at least on the platforms where it's known how
4168 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
4169 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
4170 will now compute a table of multiples of the generator that
4171 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
4172 faster (notably in the case of a single point multiplication,
4173 scalar * generator).
4174 [Nils Larsch, Bodo Moeller]
4176 *) IPv6 support for certificate extensions. The various extensions
4177 which use the IP:a.b.c.d can now take IPv6 addresses using the
4178 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
4182 *) Added an ENGINE that implements RSA by performing private key
4183 exponentiations with the GMP library. The conversions to and from
4184 GMP's mpz_t format aren't optimised nor are any montgomery forms
4185 cached, and on x86 it appears OpenSSL's own performance has caught up.
4186 However there are likely to be other architectures where GMP could
4187 provide a boost. This ENGINE is not built in by default, but it can be
4188 specified at Configure time and should be accompanied by the necessary
4189 linker additions, eg;
4190 ./config -DOPENSSL_USE_GMP -lgmp
4193 *) "openssl engine" will not display ENGINE/DSO load failure errors when
4194 testing availability of engines with "-t" - the old behaviour is
4195 produced by increasing the feature's verbosity with "-tt".
4198 *) ECDSA routines: under certain error conditions uninitialized BN objects
4199 could be freed. Solution: make sure initialization is performed early
4200 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
4204 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
4205 and DH_METHOD (eg. by ENGINE implementations) to override the normal
4206 software implementations. For DSA and DH, parameter generation can
4207 also be overriden by providing the appropriate method callbacks.
4210 *) Change the "progress" mechanism used in key-generation and
4211 primality testing to functions that take a new BN_GENCB pointer in
4212 place of callback/argument pairs. The new API functions have "_ex"
4213 postfixes and the older functions are reimplemented as wrappers for
4214 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
4215 declarations of the old functions to help (graceful) attempts to
4216 migrate to the new functions. Also, the new key-generation API
4217 functions operate on a caller-supplied key-structure and return
4218 success/failure rather than returning a key or NULL - this is to
4219 help make "keygen" another member function of RSA_METHOD etc.
4221 Example for using the new callback interface:
4223 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
4227 BN_GENCB_set(&my_cb, my_callback, my_arg);
4229 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
4230 /* For the meaning of a, b in calls to my_callback(), see the
4231 * documentation of the function that calls the callback.
4232 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
4233 * my_callback should return 1 if it wants BN_is_prime_ex()
4234 * to continue, or 0 to stop.
4239 *) Change the ZLIB compression method to be stateful, and make it
4240 available to TLS with the number defined in
4241 draft-ietf-tls-compression-04.txt.
4244 *) Add the ASN.1 structures and functions for CertificatePair, which
4245 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
4247 CertificatePair ::= SEQUENCE {
4248 forward [0] Certificate OPTIONAL,
4249 reverse [1] Certificate OPTIONAL,
4250 -- at least one of the pair shall be present -- }
4252 Also implement the PEM functions to read and write certificate
4253 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
4255 This needed to be defined, mostly for the sake of the LDAP
4256 attribute crossCertificatePair, but may prove useful elsewhere as
4260 *) Make it possible to inhibit symlinking of shared libraries in
4261 Makefile.shared, for Cygwin's sake.
4264 *) Extend the BIGNUM API by creating a function
4265 void BN_set_negative(BIGNUM *a, int neg);
4266 and a macro that behave like
4267 int BN_is_negative(const BIGNUM *a);
4269 to avoid the need to access 'a->neg' directly in applications.
4272 *) Implement fast modular reduction for pseudo-Mersenne primes
4273 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
4274 EC_GROUP_new_curve_GFp() will now automatically use this
4276 [Nils Larsch <nla@trustcenter.de>]
4278 *) Add new lock type (CRYPTO_LOCK_BN).
4281 *) Change the ENGINE framework to automatically load engines
4282 dynamically from specific directories unless they could be
4283 found to already be built in or loaded. Move all the
4284 current engines except for the cryptodev one to a new
4286 The engines in engines/ are built as shared libraries if
4287 the "shared" options was given to ./Configure or ./config.
4288 Otherwise, they are inserted in libcrypto.a.
4289 /usr/local/ssl/engines is the default directory for dynamic
4290 engines, but that can be overriden at configure time through
4291 the usual use of --prefix and/or --openssldir, and at run
4292 time with the environment variable OPENSSL_ENGINES.
4293 [Geoff Thorpe and Richard Levitte]
4295 *) Add Makefile.shared, a helper makefile to build shared
4296 libraries. Adapt Makefile.org.
4299 *) Add version info to Win32 DLLs.
4300 [Peter 'Luna' Runestig" <peter@runestig.com>]
4302 *) Add new 'medium level' PKCS#12 API. Certificates and keys
4303 can be added using this API to created arbitrary PKCS#12
4304 files while avoiding the low level API.
4306 New options to PKCS12_create(), key or cert can be NULL and
4307 will then be omitted from the output file. The encryption
4308 algorithm NIDs can be set to -1 for no encryption, the mac
4309 iteration count can be set to 0 to omit the mac.
4311 Enhance pkcs12 utility by making the -nokeys and -nocerts
4312 options work when creating a PKCS#12 file. New option -nomac
4313 to omit the mac, NONE can be set for an encryption algorithm.
4314 New code is modified to use the enhanced PKCS12_create()
4315 instead of the low level API.
4318 *) Extend ASN1 encoder to support indefinite length constructed
4319 encoding. This can output sequences tags and octet strings in
4320 this form. Modify pk7_asn1.c to support indefinite length
4321 encoding. This is experimental and needs additional code to
4322 be useful, such as an ASN1 bio and some enhanced streaming
4325 Extend template encode functionality so that tagging is passed
4326 down to the template encoder.
4329 *) Let 'openssl req' fail if an argument to '-newkey' is not
4330 recognized instead of using RSA as a default.
4333 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
4334 As these are not official, they are not included in "ALL";
4335 the "ECCdraft" ciphersuite group alias can be used to select them.
4336 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
4338 *) Add ECDH engine support.
4339 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
4341 *) Add ECDH in new directory crypto/ecdh/.
4342 [Douglas Stebila (Sun Microsystems Laboratories)]
4344 *) Let BN_rand_range() abort with an error after 100 iterations
4345 without success (which indicates a broken PRNG).
4348 *) Change BN_mod_sqrt() so that it verifies that the input value
4349 is really the square of the return value. (Previously,
4350 BN_mod_sqrt would show GIGO behaviour.)
4353 *) Add named elliptic curves over binary fields from X9.62, SECG,
4354 and WAP/WTLS; add OIDs that were still missing.
4356 [Sheueling Chang Shantz and Douglas Stebila
4357 (Sun Microsystems Laboratories)]
4359 *) Extend the EC library for elliptic curves over binary fields
4360 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
4363 EC_GF2m_simple_method
4367 EC_GROUP_new_curve_GF2m
4368 EC_GROUP_set_curve_GF2m
4369 EC_GROUP_get_curve_GF2m
4370 EC_POINT_set_affine_coordinates_GF2m
4371 EC_POINT_get_affine_coordinates_GF2m
4372 EC_POINT_set_compressed_coordinates_GF2m
4374 Point compression for binary fields is disabled by default for
4375 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
4378 As binary polynomials are represented as BIGNUMs, various members
4379 of the EC_GROUP and EC_POINT data structures can be shared
4380 between the implementations for prime fields and binary fields;
4381 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
4382 are essentially identical to their ..._GFp counterparts.
4383 (For simplicity, the '..._GFp' prefix has been dropped from
4384 various internal method names.)
4386 An internal 'field_div' method (similar to 'field_mul' and
4387 'field_sqr') has been added; this is used only for binary fields.
4389 [Sheueling Chang Shantz and Douglas Stebila
4390 (Sun Microsystems Laboratories)]
4392 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
4393 through methods ('mul', 'precompute_mult').
4395 The generic implementations (now internally called 'ec_wNAF_mul'
4396 and 'ec_wNAF_precomputed_mult') remain the default if these
4397 methods are undefined.
4399 [Sheueling Chang Shantz and Douglas Stebila
4400 (Sun Microsystems Laboratories)]
4402 *) New function EC_GROUP_get_degree, which is defined through
4403 EC_METHOD. For curves over prime fields, this returns the bit
4404 length of the modulus.
4406 [Sheueling Chang Shantz and Douglas Stebila
4407 (Sun Microsystems Laboratories)]
4409 *) New functions EC_GROUP_dup, EC_POINT_dup.
4410 (These simply call ..._new and ..._copy).
4412 [Sheueling Chang Shantz and Douglas Stebila
4413 (Sun Microsystems Laboratories)]
4415 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
4416 Polynomials are represented as BIGNUMs (where the sign bit is not
4417 used) in the following functions [macros]:
4420 BN_GF2m_sub [= BN_GF2m_add]
4421 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
4422 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
4423 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
4425 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
4426 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
4427 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
4428 BN_GF2m_cmp [= BN_ucmp]
4430 (Note that only the 'mod' functions are actually for fields GF(2^m).
4431 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
4433 For some functions, an the irreducible polynomial defining a
4434 field can be given as an 'unsigned int[]' with strictly
4435 decreasing elements giving the indices of those bits that are set;
4436 i.e., p[] represents the polynomial
4437 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
4439 p[0] > p[1] > ... > p[k] = 0.
4440 This applies to the following functions:
4445 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
4446 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
4448 BN_GF2m_mod_sqrt_arr
4449 BN_GF2m_mod_solve_quad_arr
4453 Conversion can be performed by the following functions:
4458 bntest.c has additional tests for binary polynomial arithmetic.
4460 Two implementations for BN_GF2m_mod_div() are available.
4461 The default algorithm simply uses BN_GF2m_mod_inv() and
4462 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
4463 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
4464 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
4466 [Sheueling Chang Shantz and Douglas Stebila
4467 (Sun Microsystems Laboratories)]
4469 *) Add new error code 'ERR_R_DISABLED' that can be used when some
4470 functionality is disabled at compile-time.
4471 [Douglas Stebila <douglas.stebila@sun.com>]
4473 *) Change default behaviour of 'openssl asn1parse' so that more
4474 information is visible when viewing, e.g., a certificate:
4476 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
4477 mode the content of non-printable OCTET STRINGs is output in a
4478 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
4479 avoid the appearance of a printable string.
4480 [Nils Larsch <nla@trustcenter.de>]
4482 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
4484 EC_GROUP_set_asn1_flag()
4485 EC_GROUP_get_asn1_flag()
4486 EC_GROUP_set_point_conversion_form()
4487 EC_GROUP_get_point_conversion_form()
4488 These control ASN1 encoding details:
4489 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
4490 has been set to OPENSSL_EC_NAMED_CURVE.
4491 - Points are encoded in uncompressed form by default; options for
4492 asn1_for are as for point2oct, namely
4493 POINT_CONVERSION_COMPRESSED
4494 POINT_CONVERSION_UNCOMPRESSED
4495 POINT_CONVERSION_HYBRID
4497 Also add 'seed' and 'seed_len' members to EC_GROUP with access
4500 EC_GROUP_get0_seed()
4501 EC_GROUP_get_seed_len()
4502 This is used only for ASN1 purposes (so far).
4503 [Nils Larsch <nla@trustcenter.de>]
4505 *) Add 'field_type' member to EC_METHOD, which holds the NID
4506 of the appropriate field type OID. The new function
4507 EC_METHOD_get_field_type() returns this value.
4508 [Nils Larsch <nla@trustcenter.de>]
4513 EC_POINT_point2hex()
4514 EC_POINT_hex2point()
4515 providing useful interfaces to EC_POINT_point2oct() and
4516 EC_POINT_oct2point().
4517 [Nils Larsch <nla@trustcenter.de>]
4519 *) Change internals of the EC library so that the functions
4520 EC_GROUP_set_generator()
4521 EC_GROUP_get_generator()
4522 EC_GROUP_get_order()
4523 EC_GROUP_get_cofactor()
4524 are implemented directly in crypto/ec/ec_lib.c and not dispatched
4525 to methods, which would lead to unnecessary code duplication when
4526 adding different types of curves.
4527 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
4529 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
4530 arithmetic, and such that modified wNAFs are generated
4531 (which avoid length expansion in many cases).
4534 *) Add a function EC_GROUP_check_discriminant() (defined via
4535 EC_METHOD) that verifies that the curve discriminant is non-zero.
4537 Add a function EC_GROUP_check() that makes some sanity tests
4538 on a EC_GROUP, its generator and order. This includes
4539 EC_GROUP_check_discriminant().
4540 [Nils Larsch <nla@trustcenter.de>]
4542 *) Add ECDSA in new directory crypto/ecdsa/.
4544 Add applications 'openssl ecparam' and 'openssl ecdsa'
4545 (these are based on 'openssl dsaparam' and 'openssl dsa').
4547 ECDSA support is also included in various other files across the
4548 library. Most notably,
4549 - 'openssl req' now has a '-newkey ecdsa:file' option;
4550 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
4551 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
4552 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
4553 them suitable for ECDSA where domain parameters must be
4554 extracted before the specific public key;
4555 - ECDSA engine support has been added.
4556 [Nils Larsch <nla@trustcenter.de>]
4558 *) Include some named elliptic curves, and add OIDs from X9.62,
4559 SECG, and WAP/WTLS. Each curve can be obtained from the new
4561 EC_GROUP_new_by_curve_name(),
4562 and the list of available named curves can be obtained with
4563 EC_get_builtin_curves().
4564 Also add a 'curve_name' member to EC_GROUP objects, which can be
4566 EC_GROUP_set_curve_name()
4567 EC_GROUP_get_curve_name()
4568 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
4570 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
4571 was actually never needed) and in BN_mul(). The removal in BN_mul()
4572 required a small change in bn_mul_part_recursive() and the addition
4573 of the functions bn_cmp_part_words(), bn_sub_part_words() and
4574 bn_add_part_words(), which do the same thing as bn_cmp_words(),
4575 bn_sub_words() and bn_add_words() except they take arrays with
4579 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
4581 *) Cleanse PEM buffers before freeing them since they may contain
4583 [Benjamin Bennett <ben@psc.edu>]
4585 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
4586 a ciphersuite string such as "DEFAULT:RSA" cannot enable
4587 authentication-only ciphersuites.
4590 *) Since AES128 and AES256 share a single mask bit in the logic of
4591 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
4592 kludge to work properly if AES128 is available and AES256 isn't.
4595 *) Expand security boundary to match 1.1.1 module.
4598 *) Remove redundant features: hash file source, editing of test vectors
4599 modify fipsld to use external fips_premain.c signature.
4602 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
4603 run algorithm test programs.
4606 *) Make algorithm test programs more tolerant of whitespace.
4609 *) Have SSL/TLS server implementation tolerate "mismatched" record
4610 protocol version while receiving ClientHello even if the
4611 ClientHello is fragmented. (The server can't insist on the
4612 particular protocol version it has chosen before the ServerHello
4613 message has informed the client about his choice.)
4616 *) Load error codes if they are not already present instead of using a
4617 static variable. This allows them to be cleanly unloaded and reloaded.
4620 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
4622 *) Introduce limits to prevent malicious keys being able to
4623 cause a denial of service. (CVE-2006-2940)
4624 [Steve Henson, Bodo Moeller]
4626 *) Fix ASN.1 parsing of certain invalid structures that can result
4627 in a denial of service. (CVE-2006-2937) [Steve Henson]
4629 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
4630 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
4632 *) Fix SSL client code which could crash if connecting to a
4633 malicious SSLv2 server. (CVE-2006-4343)
4634 [Tavis Ormandy and Will Drewry, Google Security Team]
4636 *) Change ciphersuite string processing so that an explicit
4637 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
4638 will no longer include "AES128-SHA"), and any other similar
4639 ciphersuite (same bitmap) from *other* protocol versions (so that
4640 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
4641 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
4642 changes from 0.9.8b and 0.9.8d.
4645 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
4647 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
4648 (CVE-2006-4339) [Ben Laurie and Google Security Team]
4650 *) Change the Unix randomness entropy gathering to use poll() when
4651 possible instead of select(), since the latter has some
4652 undesirable limitations.
4653 [Darryl Miles via Richard Levitte and Bodo Moeller]
4655 *) Disable rogue ciphersuites:
4657 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
4658 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
4659 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
4661 The latter two were purportedly from
4662 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
4665 Also deactive the remaining ciphersuites from
4666 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
4667 unofficial, and the ID has long expired.
4670 *) Fix RSA blinding Heisenbug (problems sometimes occured on
4671 dual-core machines) and other potential thread-safety issues.
4674 Changes between 0.9.7i and 0.9.7j [04 May 2006]
4676 *) Adapt fipsld and the build system to link against the validated FIPS
4677 module in FIPS mode.
4680 *) Fixes for VC++ 2005 build under Windows.
4683 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
4684 from a Windows bash shell such as MSYS. It is autodetected from the
4685 "config" script when run from a VC++ environment. Modify standard VC++
4686 build to use fipscanister.o from the GNU make build.
4689 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
4691 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
4692 The value now differs depending on if you build for FIPS or not.
4693 BEWARE! A program linked with a shared FIPSed libcrypto can't be
4694 safely run with a non-FIPSed libcrypto, as it may crash because of
4695 the difference induced by this change.
4698 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
4700 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
4701 (part of SSL_OP_ALL). This option used to disable the
4702 countermeasure against man-in-the-middle protocol-version
4703 rollback in the SSL 2.0 server implementation, which is a bad
4704 idea. (CVE-2005-2969)
4706 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
4707 for Information Security, National Institute of Advanced Industrial
4708 Science and Technology [AIST], Japan)]
4710 *) Minimal support for X9.31 signatures and PSS padding modes. This is
4711 mainly for FIPS compliance and not fully integrated at this stage.
4714 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
4715 the exponentiation using a fixed-length exponent. (Otherwise,
4716 the information leaked through timing could expose the secret key
4717 after many signatures; cf. Bleichenbacher's attack on DSA with
4721 *) Make a new fixed-window mod_exp implementation the default for
4722 RSA, DSA, and DH private-key operations so that the sequence of
4723 squares and multiplies and the memory access pattern are
4724 independent of the particular secret key. This will mitigate
4725 cache-timing and potential related attacks.
4727 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
4728 and this is automatically used by BN_mod_exp_mont() if the new flag
4729 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
4730 will use this BN flag for private exponents unless the flag
4731 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
4732 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
4734 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
4736 *) Change the client implementation for SSLv23_method() and
4737 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
4738 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
4739 (Previously, the SSL 2.0 backwards compatible Client Hello
4740 message format would be used even with SSL_OP_NO_SSLv2.)
4743 *) Add support for smime-type MIME parameter in S/MIME messages which some
4747 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
4748 a threadsafe manner. Modify rsa code to use new function and add calls
4749 to dsa and dh code (which had race conditions before).
4752 *) Include the fixed error library code in the C error file definitions
4753 instead of fixing them up at runtime. This keeps the error code
4754 structures constant.
4757 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
4759 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
4762 *) Fixes for newer kerberos headers. NB: the casts are needed because
4763 the 'length' field is signed on one version and unsigned on another
4764 with no (?) obvious way to tell the difference, without these VC++
4765 complains. Also the "definition" of FAR (blank) is no longer included
4766 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
4767 some needed definitions.
4770 *) Undo Cygwin change.
4773 *) Added support for proxy certificates according to RFC 3820.
4774 Because they may be a security thread to unaware applications,
4775 they must be explicitely allowed in run-time. See
4776 docs/HOWTO/proxy_certificates.txt for further information.
4779 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
4781 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
4782 server and client random values. Previously
4783 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
4784 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
4786 This change has negligible security impact because:
4788 1. Server and client random values still have 24 bytes of pseudo random
4791 2. Server and client random values are sent in the clear in the initial
4794 3. The master secret is derived using the premaster secret (48 bytes in
4795 size for static RSA ciphersuites) as well as client server and random
4798 The OpenSSL team would like to thank the UK NISCC for bringing this issue
4801 [Stephen Henson, reported by UK NISCC]
4803 *) Use Windows randomness collection on Cygwin.
4806 *) Fix hang in EGD/PRNGD query when communication socket is closed
4807 prematurely by EGD/PRNGD.
4808 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
4810 *) Prompt for pass phrases when appropriate for PKCS12 input format.
4813 *) Back-port of selected performance improvements from development
4814 branch, as well as improved support for PowerPC platforms.
4817 *) Add lots of checks for memory allocation failure, error codes to indicate
4818 failure and freeing up memory if a failure occurs.
4819 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
4821 *) Add new -passin argument to dgst.
4824 *) Perform some character comparisons of different types in X509_NAME_cmp:
4825 this is needed for some certificates that reencode DNs into UTF8Strings
4826 (in violation of RFC3280) and can't or wont issue name rollover
4830 *) Make an explicit check during certificate validation to see that
4831 the CA setting in each certificate on the chain is correct. As a
4832 side effect always do the following basic checks on extensions,
4833 not just when there's an associated purpose to the check:
4835 - if there is an unhandled critical extension (unless the user
4836 has chosen to ignore this fault)
4837 - if the path length has been exceeded (if one is set at all)
4838 - that certain extensions fit the associated purpose (if one has
4842 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
4844 *) Avoid a race condition when CRLs are checked in a multi threaded
4845 environment. This would happen due to the reordering of the revoked
4846 entries during signature checking and serial number lookup. Now the
4847 encoding is cached and the serial number sort performed under a lock.
4848 Add new STACK function sk_is_sorted().
4851 *) Add Delta CRL to the extension code.
4854 *) Various fixes to s3_pkt.c so alerts are sent properly.
4855 [David Holmes <d.holmes@f5.com>]
4857 *) Reduce the chances of duplicate issuer name and serial numbers (in
4858 violation of RFC3280) using the OpenSSL certificate creation utilities.
4859 This is done by creating a random 64 bit value for the initial serial
4860 number when a serial number file is created or when a self signed
4861 certificate is created using 'openssl req -x509'. The initial serial
4862 number file is created using 'openssl x509 -next_serial' in CA.pl
4863 rather than being initialized to 1.
4866 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
4868 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
4869 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
4870 [Joe Orton, Steve Henson]
4872 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
4874 [Joe Orton, Steve Henson]
4876 *) Make it possible to have multiple active certificates with the same
4877 subject in the CA index file. This is done only if the keyword
4878 'unique_subject' is set to 'no' in the main CA section (default
4879 if 'CA_default') of the configuration file. The value is saved
4880 with the database itself in a separate index attribute file,
4881 named like the index file with '.attr' appended to the name.
4884 *) X509 verify fixes. Disable broken certificate workarounds when
4885 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
4886 keyUsage extension present. Don't accept CRLs with unhandled critical
4887 extensions: since verify currently doesn't process CRL extensions this
4888 rejects a CRL with *any* critical extensions. Add new verify error codes
4892 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
4893 A clarification of RFC2560 will require the use of OCTET STRINGs and
4894 some implementations cannot handle the current raw format. Since OpenSSL
4895 copies and compares OCSP nonces as opaque blobs without any attempt at
4896 parsing them this should not create any compatibility issues.
4899 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
4900 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
4901 this HMAC (and other) operations are several times slower than OpenSSL
4905 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
4906 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4908 *) Use the correct content when signing type "other".
4911 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
4913 *) Fix various bugs revealed by running the NISCC test suite:
4915 Stop out of bounds reads in the ASN1 code when presented with
4916 invalid tags (CVE-2003-0543 and CVE-2003-0544).
4918 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
4920 If verify callback ignores invalid public key errors don't try to check
4921 certificate signature with the NULL public key.
4925 *) New -ignore_err option in ocsp application to stop the server
4926 exiting on the first error in a request.
4929 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
4930 if the server requested one: as stated in TLS 1.0 and SSL 3.0
4934 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
4935 extra data after the compression methods not only for TLS 1.0
4936 but also for SSL 3.0 (as required by the specification).
4937 [Bodo Moeller; problem pointed out by Matthias Loepfe]
4939 *) Change X509_certificate_type() to mark the key as exported/exportable
4940 when it's 512 *bits* long, not 512 bytes.
4943 *) Change AES_cbc_encrypt() so it outputs exact multiple of
4944 blocks during encryption.
4947 *) Various fixes to base64 BIO and non blocking I/O. On write
4948 flushes were not handled properly if the BIO retried. On read
4949 data was not being buffered properly and had various logic bugs.
4950 This also affects blocking I/O when the data being decoded is a
4954 *) Various S/MIME bugfixes and compatibility changes:
4955 output correct application/pkcs7 MIME type if
4956 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
4957 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
4958 of files as .eml work). Correctly handle very long lines in MIME
4962 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
4964 *) Countermeasure against the Klima-Pokorny-Rosa extension of
4965 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
4966 a protocol version number mismatch like a decryption error
4967 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
4970 *) Turn on RSA blinding by default in the default implementation
4971 to avoid a timing attack. Applications that don't want it can call
4972 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
4973 They would be ill-advised to do so in most cases.
4974 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
4976 *) Change RSA blinding code so that it works when the PRNG is not
4977 seeded (in this case, the secret RSA exponent is abused as
4978 an unpredictable seed -- if it is not unpredictable, there
4979 is no point in blinding anyway). Make RSA blinding thread-safe
4980 by remembering the creator's thread ID in rsa->blinding and
4981 having all other threads use local one-time blinding factors
4982 (this requires more computation than sharing rsa->blinding, but
4983 avoids excessive locking; and if an RSA object is not shared
4984 between threads, blinding will still be very fast).
4987 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
4988 ENGINE as defaults for all supported algorithms irrespective of
4989 the 'flags' parameter. 'flags' is now honoured, so applications
4990 should make sure they are passing it correctly.
4993 *) Target "mingw" now allows native Windows code to be generated in
4994 the Cygwin environment as well as with the MinGW compiler.
4997 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
4999 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
5000 via timing by performing a MAC computation even if incorrect
5001 block cipher padding has been found. This is a countermeasure
5002 against active attacks where the attacker has to distinguish
5003 between bad padding and a MAC verification error. (CVE-2003-0078)
5005 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
5006 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
5007 Martin Vuagnoux (EPFL, Ilion)]
5009 *) Make the no-err option work as intended. The intention with no-err
5010 is not to have the whole error stack handling routines removed from
5011 libcrypto, it's only intended to remove all the function name and
5012 reason texts, thereby removing some of the footprint that may not
5013 be interesting if those errors aren't displayed anyway.
5015 NOTE: it's still possible for any application or module to have it's
5016 own set of error texts inserted. The routines are there, just not
5017 used by default when no-err is given.
5020 *) Add support for FreeBSD on IA64.
5021 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
5023 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
5024 Kerberos function mit_des_cbc_cksum(). Before this change,
5025 the value returned by DES_cbc_cksum() was like the one from
5026 mit_des_cbc_cksum(), except the bytes were swapped.
5027 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
5029 *) Allow an application to disable the automatic SSL chain building.
5030 Before this a rather primitive chain build was always performed in
5031 ssl3_output_cert_chain(): an application had no way to send the
5032 correct chain if the automatic operation produced an incorrect result.
5034 Now the chain builder is disabled if either:
5036 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
5038 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
5040 The reasoning behind this is that an application would not want the
5041 auto chain building to take place if extra chain certificates are
5042 present and it might also want a means of sending no additional
5043 certificates (for example the chain has two certificates and the
5047 *) Add the possibility to build without the ENGINE framework.
5048 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
5050 *) Under Win32 gmtime() can return NULL: check return value in
5051 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
5054 *) DSA routines: under certain error conditions uninitialized BN objects
5055 could be freed. Solution: make sure initialization is performed early
5056 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
5057 Nils Larsch <nla@trustcenter.de> via PR#459)
5060 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
5061 checked on reconnect on the client side, therefore session resumption
5062 could still fail with a "ssl session id is different" error. This
5063 behaviour is masked when SSL_OP_ALL is used due to
5064 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
5065 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
5066 followup to PR #377.
5069 *) IA-32 assembler support enhancements: unified ELF targets, support
5070 for SCO/Caldera platforms, fix for Cygwin shared build.
5073 *) Add support for FreeBSD on sparc64. As a consequence, support for
5074 FreeBSD on non-x86 processors is separate from x86 processors on
5075 the config script, much like the NetBSD support.
5076 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
5078 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
5080 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
5083 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
5084 code (06) was taken as the first octet of the session ID and the last
5085 octet was ignored consequently. As a result SSLv2 client side session
5086 caching could not have worked due to the session ID mismatch between
5088 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
5092 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
5093 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
5097 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
5098 seems that in spite of existing for more than a year, many application
5099 author have done nothing to provide the necessary callbacks, which
5100 means that this particular engine will not work properly anywhere.
5101 This is a very unfortunate situation which forces us, in the name
5102 of usability, to give the hw_ncipher.c a static lock, which is part
5104 NOTE: This is for the 0.9.7 series ONLY. This hack will never
5105 appear in 0.9.8 or later. We EXPECT application authors to have
5106 dealt properly with this when 0.9.8 is released (unless we actually
5107 make such changes in the libcrypto locking code that changes will
5108 have to be made anyway).
5111 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
5112 octets have been read, EOF or an error occurs. Without this change
5113 some truncated ASN1 structures will not produce an error.
5116 *) Disable Heimdal support, since it hasn't been fully implemented.
5117 Still give the possibility to force the use of Heimdal, but with
5118 warnings and a request that patches get sent to openssl-dev.
5121 *) Add the VC-CE target, introduce the WINCE sysname, and add
5122 INSTALL.WCE and appropriate conditionals to make it build.
5123 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
5125 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
5126 cygssl-x.y.z.dll, where x, y and z are the major, minor and
5127 edit numbers of the version.
5128 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
5130 *) Introduce safe string copy and catenation functions
5131 (BUF_strlcpy() and BUF_strlcat()).
5132 [Ben Laurie (CHATS) and Richard Levitte]
5134 *) Avoid using fixed-size buffers for one-line DNs.
5135 [Ben Laurie (CHATS)]
5137 *) Add BUF_MEM_grow_clean() to avoid information leakage when
5138 resizing buffers containing secrets, and use where appropriate.
5139 [Ben Laurie (CHATS)]
5141 *) Avoid using fixed size buffers for configuration file location.
5142 [Ben Laurie (CHATS)]
5144 *) Avoid filename truncation for various CA files.
5145 [Ben Laurie (CHATS)]
5147 *) Use sizeof in preference to magic numbers.
5148 [Ben Laurie (CHATS)]
5150 *) Avoid filename truncation in cert requests.
5151 [Ben Laurie (CHATS)]
5153 *) Add assertions to check for (supposedly impossible) buffer
5155 [Ben Laurie (CHATS)]
5157 *) Don't cache truncated DNS entries in the local cache (this could
5158 potentially lead to a spoofing attack).
5159 [Ben Laurie (CHATS)]
5161 *) Fix various buffers to be large enough for hex/decimal
5162 representations in a platform independent manner.
5163 [Ben Laurie (CHATS)]
5165 *) Add CRYPTO_realloc_clean() to avoid information leakage when
5166 resizing buffers containing secrets, and use where appropriate.
5167 [Ben Laurie (CHATS)]
5169 *) Add BIO_indent() to avoid much slightly worrying code to do
5171 [Ben Laurie (CHATS)]
5173 *) Convert sprintf()/BIO_puts() to BIO_printf().
5174 [Ben Laurie (CHATS)]
5176 *) buffer_gets() could terminate with the buffer only half
5178 [Ben Laurie (CHATS)]
5180 *) Add assertions to prevent user-supplied crypto functions from
5181 overflowing internal buffers by having large block sizes, etc.
5182 [Ben Laurie (CHATS)]
5184 *) New OPENSSL_assert() macro (similar to assert(), but enabled
5186 [Ben Laurie (CHATS)]
5188 *) Eliminate unused copy of key in RC4.
5189 [Ben Laurie (CHATS)]
5191 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
5192 [Ben Laurie (CHATS)]
5194 *) Fix off-by-one error in EGD path.
5195 [Ben Laurie (CHATS)]
5197 *) If RANDFILE path is too long, ignore instead of truncating.
5198 [Ben Laurie (CHATS)]
5200 *) Eliminate unused and incorrectly sized X.509 structure
5202 [Ben Laurie (CHATS)]
5204 *) Eliminate unused and dangerous function knumber().
5205 [Ben Laurie (CHATS)]
5207 *) Eliminate unused and dangerous structure, KSSL_ERR.
5208 [Ben Laurie (CHATS)]
5210 *) Protect against overlong session ID context length in an encoded
5211 session object. Since these are local, this does not appear to be
5213 [Ben Laurie (CHATS)]
5215 *) Change from security patch (see 0.9.6e below) that did not affect
5216 the 0.9.6 release series:
5218 Remote buffer overflow in SSL3 protocol - an attacker could
5219 supply an oversized master key in Kerberos-enabled versions.
5221 [Ben Laurie (CHATS)]
5223 *) Change the SSL kerb5 codes to match RFC 2712.
5226 *) Make -nameopt work fully for req and add -reqopt switch.
5227 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
5229 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
5230 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
5232 *) Make sure tests can be performed even if the corresponding algorithms
5233 have been removed entirely. This was also the last step to make
5234 OpenSSL compilable with DJGPP under all reasonable conditions.
5235 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
5237 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
5238 to allow version independent disabling of normally unselected ciphers,
5239 which may be activated as a side-effect of selecting a single cipher.
5241 (E.g., cipher list string "RSA" enables ciphersuites that are left
5242 out of "ALL" because they do not provide symmetric encryption.
5243 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
5244 [Lutz Jaenicke, Bodo Moeller]
5246 *) Add appropriate support for separate platform-dependent build
5247 directories. The recommended way to make a platform-dependent
5248 build directory is the following (tested on Linux), maybe with
5251 # Place yourself outside of the OpenSSL source tree. In
5252 # this example, the environment variable OPENSSL_SOURCE
5253 # is assumed to contain the absolute OpenSSL source directory.
5254 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
5255 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
5256 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
5257 mkdir -p `dirname $F`
5258 ln -s $OPENSSL_SOURCE/$F $F
5261 To be absolutely sure not to disturb the source tree, a "make clean"
5262 is a good thing. If it isn't successful, don't worry about it,
5263 it probably means the source directory is very clean.
5266 *) Make sure any ENGINE control commands make local copies of string
5267 pointers passed to them whenever necessary. Otherwise it is possible
5268 the caller may have overwritten (or deallocated) the original string
5269 data when a later ENGINE operation tries to use the stored values.
5270 [Götz Babin-Ebell <babinebell@trustcenter.de>]
5272 *) Improve diagnostics in file reading and command-line digests.
5273 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
5275 *) Add AES modes CFB and OFB to the object database. Correct an
5276 error in AES-CFB decryption.
5279 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
5280 allows existing EVP_CIPHER_CTX structures to be reused after
5281 calling EVP_*Final(). This behaviour is used by encryption
5282 BIOs and some applications. This has the side effect that
5283 applications must explicitly clean up cipher contexts with
5284 EVP_CIPHER_CTX_cleanup() or they will leak memory.
5287 *) Check the values of dna and dnb in bn_mul_recursive before calling
5288 bn_mul_comba (a non zero value means the a or b arrays do not contain
5289 n2 elements) and fallback to bn_mul_normal if either is not zero.
5292 *) Fix escaping of non-ASCII characters when using the -subj option
5293 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
5296 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
5297 form for "surname", serialNumber has no short form.
5298 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
5299 therefore remove "mail" short name for "internet 7".
5300 The OID for unique identifiers in X509 certificates is
5301 x500UniqueIdentifier, not uniqueIdentifier.
5302 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
5305 *) Add an "init" command to the ENGINE config module and auto initialize
5306 ENGINEs. Without any "init" command the ENGINE will be initialized
5307 after all ctrl commands have been executed on it. If init=1 the
5308 ENGINE is initailized at that point (ctrls before that point are run
5309 on the uninitialized ENGINE and after on the initialized one). If
5310 init=0 then the ENGINE will not be iniatialized at all.
5313 *) Fix the 'app_verify_callback' interface so that the user-defined
5314 argument is actually passed to the callback: In the
5315 SSL_CTX_set_cert_verify_callback() prototype, the callback
5316 declaration has been changed from
5319 int (*cb)(X509_STORE_CTX *,void *);
5320 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
5321 i=s->ctx->app_verify_callback(&ctx)
5322 has been changed into
5323 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
5325 To update applications using SSL_CTX_set_cert_verify_callback(),
5326 a dummy argument can be added to their callback functions.
5327 [D. K. Smetters <smetters@parc.xerox.com>]
5329 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
5330 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
5332 *) Add and OPENSSL_LOAD_CONF define which will cause
5333 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
5334 This allows older applications to transparently support certain
5335 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
5336 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
5337 load the config file and OPENSSL_add_all_algorithms_conf() which will
5338 always load it have also been added.
5341 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
5342 Adjust NIDs and EVP layer.
5343 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
5345 *) Config modules support in openssl utility.
5347 Most commands now load modules from the config file,
5348 though in a few (such as version) this isn't done
5349 because it couldn't be used for anything.
5351 In the case of ca and req the config file used is
5352 the same as the utility itself: that is the -config
5353 command line option can be used to specify an
5357 *) Move default behaviour from OPENSSL_config(). If appname is NULL
5358 use "openssl_conf" if filename is NULL use default openssl config file.
5361 *) Add an argument to OPENSSL_config() to allow the use of an alternative
5362 config section name. Add a new flag to tolerate a missing config file
5363 and move code to CONF_modules_load_file().
5366 *) Support for crypto accelerator cards from Accelerated Encryption
5367 Processing, www.aep.ie. (Use engine 'aep')
5368 The support was copied from 0.9.6c [engine] and adapted/corrected
5369 to work with the new engine framework.
5370 [AEP Inc. and Richard Levitte]
5372 *) Support for SureWare crypto accelerator cards from Baltimore
5373 Technologies. (Use engine 'sureware')
5374 The support was copied from 0.9.6c [engine] and adapted
5375 to work with the new engine framework.
5378 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
5379 make the newer ENGINE framework commands for the CHIL engine work.
5380 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
5382 *) Make it possible to produce shared libraries on ReliantUNIX.
5383 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
5385 *) Add the configuration target debug-linux-ppro.
5386 Make 'openssl rsa' use the general key loading routines
5387 implemented in apps.c, and make those routines able to
5388 handle the key format FORMAT_NETSCAPE and the variant
5390 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
5392 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
5393 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
5395 *) Add -keyform to rsautl, and document -engine.
5396 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
5398 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
5399 BIO_R_NO_SUCH_FILE error code rather than the generic
5400 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
5403 *) Add new functions
5405 ERR_peek_last_error_line
5406 ERR_peek_last_error_line_data.
5407 These are similar to
5410 ERR_peek_error_line_data,
5411 but report on the latest error recorded rather than the first one
5412 still in the error queue.
5413 [Ben Laurie, Bodo Moeller]
5415 *) default_algorithms option in ENGINE config module. This allows things
5417 default_algorithms = ALL
5418 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
5421 *) Preliminary ENGINE config module.
5424 *) New experimental application configuration code.
5427 *) Change the AES code to follow the same name structure as all other
5428 symmetric ciphers, and behave the same way. Move everything to
5429 the directory crypto/aes, thereby obsoleting crypto/rijndael.
5430 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
5432 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
5433 [Ben Laurie and Theo de Raadt]
5435 *) Add option to output public keys in req command.
5436 [Massimiliano Pala madwolf@openca.org]
5438 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
5439 (up to about 10% better than before for P-192 and P-224).
5442 *) New functions/macros
5444 SSL_CTX_set_msg_callback(ctx, cb)
5445 SSL_CTX_set_msg_callback_arg(ctx, arg)
5446 SSL_set_msg_callback(ssl, cb)
5447 SSL_set_msg_callback_arg(ssl, arg)
5449 to request calling a callback function
5451 void cb(int write_p, int version, int content_type,
5452 const void *buf, size_t len, SSL *ssl, void *arg)
5454 whenever a protocol message has been completely received
5455 (write_p == 0) or sent (write_p == 1). Here 'version' is the
5456 protocol version according to which the SSL library interprets
5457 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
5458 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
5459 the content type as defined in the SSL 3.0/TLS 1.0 protocol
5460 specification (change_cipher_spec(20), alert(21), handshake(22)).
5461 'buf' and 'len' point to the actual message, 'ssl' to the
5462 SSL object, and 'arg' is the application-defined value set by
5463 SSL[_CTX]_set_msg_callback_arg().
5465 'openssl s_client' and 'openssl s_server' have new '-msg' options
5466 to enable a callback that displays all protocol messages.
5469 *) Change the shared library support so shared libraries are built as
5470 soon as the corresponding static library is finished, and thereby get
5471 openssl and the test programs linked against the shared library.
5472 This still only happens when the keyword "shard" has been given to
5473 the configuration scripts.
5475 NOTE: shared library support is still an experimental thing, and
5476 backward binary compatibility is still not guaranteed.
5477 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
5479 *) Add support for Subject Information Access extension.
5480 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
5482 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
5483 additional bytes when new memory had to be allocated, not just
5484 when reusing an existing buffer.
5487 *) New command line and configuration option 'utf8' for the req command.
5488 This allows field values to be specified as UTF8 strings.
5491 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
5492 runs for the former and machine-readable output for the latter.
5495 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
5496 of the e-mail address in the DN (i.e., it will go into a certificate
5497 extension only). The new configuration file option 'email_in_dn = no'
5498 has the same effect.
5499 [Massimiliano Pala madwolf@openca.org]
5501 *) Change all functions with names starting with des_ to be starting
5502 with DES_ instead. Add wrappers that are compatible with libdes,
5503 but are named _ossl_old_des_*. Finally, add macros that map the
5504 des_* symbols to the corresponding _ossl_old_des_* if libdes
5505 compatibility is desired. If OpenSSL 0.9.6c compatibility is
5506 desired, the des_* symbols will be mapped to DES_*, with one
5509 Since we provide two compatibility mappings, the user needs to
5510 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
5511 compatibility is desired. The default (i.e., when that macro
5512 isn't defined) is OpenSSL 0.9.6c compatibility.
5514 There are also macros that enable and disable the support of old
5515 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
5516 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
5517 are defined, the default will apply: to support the old des routines.
5519 In either case, one must include openssl/des.h to get the correct
5520 definitions. Do not try to just include openssl/des_old.h, that
5523 NOTE: This is a major break of an old API into a new one. Software
5524 authors are encouraged to switch to the DES_ style functions. Some
5525 time in the future, des_old.h and the libdes compatibility functions
5526 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
5527 default), and then completely removed.
5530 *) Test for certificates which contain unsupported critical extensions.
5531 If such a certificate is found during a verify operation it is
5532 rejected by default: this behaviour can be overridden by either
5533 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
5534 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
5535 X509_supported_extension() has also been added which returns 1 if a
5536 particular extension is supported.
5539 *) Modify the behaviour of EVP cipher functions in similar way to digests
5540 to retain compatibility with existing code.
5543 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
5544 compatibility with existing code. In particular the 'ctx' parameter does
5545 not have to be to be initialized before the call to EVP_DigestInit() and
5546 it is tidied up after a call to EVP_DigestFinal(). New function
5547 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
5548 EVP_MD_CTX_copy() changed to not require the destination to be
5549 initialized valid and new function EVP_MD_CTX_copy_ex() added which
5550 requires the destination to be valid.
5552 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
5553 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
5556 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
5557 so that complete 'Handshake' protocol structures are kept in memory
5558 instead of overwriting 'msg_type' and 'length' with 'body' data.
5561 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
5562 [Massimo Santin via Richard Levitte]
5564 *) Major restructuring to the underlying ENGINE code. This includes
5565 reduction of linker bloat, separation of pure "ENGINE" manipulation
5566 (initialisation, etc) from functionality dealing with implementations
5567 of specific crypto iterfaces. This change also introduces integrated
5568 support for symmetric ciphers and digest implementations - so ENGINEs
5569 can now accelerate these by providing EVP_CIPHER and EVP_MD
5570 implementations of their own. This is detailed in crypto/engine/README
5571 as it couldn't be adequately described here. However, there are a few
5572 API changes worth noting - some RSA, DSA, DH, and RAND functions that
5573 were changed in the original introduction of ENGINE code have now
5574 reverted back - the hooking from this code to ENGINE is now a good
5575 deal more passive and at run-time, operations deal directly with
5576 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
5577 dereferencing through an ENGINE pointer any more. Also, the ENGINE
5578 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
5579 they were not being used by the framework as there is no concept of a
5580 BIGNUM_METHOD and they could not be generalised to the new
5581 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
5582 ENGINE_cpy() has been removed as it cannot be consistently defined in
5586 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
5589 *) Change mkdef.pl to sort symbols that get the same entry number,
5590 and make sure the automatically generated functions ERR_load_*
5591 become part of libeay.num as well.
5594 *) New function SSL_renegotiate_pending(). This returns true once
5595 renegotiation has been requested (either SSL_renegotiate() call
5596 or HelloRequest/ClientHello received from the peer) and becomes
5597 false once a handshake has been completed.
5598 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
5599 sends a HelloRequest, but does not ensure that a handshake takes
5600 place. SSL_renegotiate_pending() is useful for checking if the
5601 client has followed the request.)
5604 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
5605 By default, clients may request session resumption even during
5606 renegotiation (if session ID contexts permit); with this option,
5607 session resumption is possible only in the first handshake.
5609 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
5610 more bits available for options that should not be part of
5611 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
5614 *) Add some demos for certificate and certificate request creation.
5617 *) Make maximum certificate chain size accepted from the peer application
5618 settable (SSL*_get/set_max_cert_list()), as proposed by
5619 "Douglas E. Engert" <deengert@anl.gov>.
5622 *) Add support for shared libraries for Unixware-7
5623 (Boyd Lynn Gerber <gerberb@zenez.com>).
5626 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
5627 be done prior to destruction. Use this to unload error strings from
5628 ENGINEs that load their own error strings. NB: This adds two new API
5629 functions to "get" and "set" this destroy handler in an ENGINE.
5632 *) Alter all existing ENGINE implementations (except "openssl" and
5633 "openbsd") to dynamically instantiate their own error strings. This
5634 makes them more flexible to be built both as statically-linked ENGINEs
5635 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
5636 Also, add stub code to each that makes building them as self-contained
5637 shared-libraries easier (see README.ENGINE).
5640 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
5641 implementations into applications that are completely implemented in
5642 self-contained shared-libraries. The "dynamic" ENGINE exposes control
5643 commands that can be used to configure what shared-library to load and
5644 to control aspects of the way it is handled. Also, made an update to
5645 the README.ENGINE file that brings its information up-to-date and
5646 provides some information and instructions on the "dynamic" ENGINE
5647 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
5650 *) Make it possible to unload ranges of ERR strings with a new
5651 "ERR_unload_strings" function.
5654 *) Add a copy() function to EVP_MD.
5657 *) Make EVP_MD routines take a context pointer instead of just the
5658 md_data void pointer.
5661 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
5662 that the digest can only process a single chunk of data
5663 (typically because it is provided by a piece of
5664 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
5665 is only going to provide a single chunk of data, and hence the
5666 framework needn't accumulate the data for oneshot drivers.
5669 *) As with "ERR", make it possible to replace the underlying "ex_data"
5670 functions. This change also alters the storage and management of global
5671 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
5672 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
5673 index counters. The API functions that use this state have been changed
5674 to take a "class_index" rather than pointers to the class's local STACK
5675 and counter, and there is now an API function to dynamically create new
5676 classes. This centralisation allows us to (a) plug a lot of the
5677 thread-safety problems that existed, and (b) makes it possible to clean
5678 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
5679 such data would previously have always leaked in application code and
5680 workarounds were in place to make the memory debugging turn a blind eye
5681 to it. Application code that doesn't use this new function will still
5682 leak as before, but their memory debugging output will announce it now
5683 rather than letting it slide.
5685 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
5686 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
5687 has a return value to indicate success or failure.
5690 *) Make it possible to replace the underlying "ERR" functions such that the
5691 global state (2 LHASH tables and 2 locks) is only used by the "default"
5692 implementation. This change also adds two functions to "get" and "set"
5693 the implementation prior to it being automatically set the first time
5694 any other ERR function takes place. Ie. an application can call "get",
5695 pass the return value to a module it has just loaded, and that module
5696 can call its own "set" function using that value. This means the
5697 module's "ERR" operations will use (and modify) the error state in the
5698 application and not in its own statically linked copy of OpenSSL code.
5701 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
5702 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
5703 the operation, and provides a more encapsulated way for external code
5704 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
5705 to use these functions rather than manually incrementing the counts.
5707 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
5710 *) Add EVP test program.
5713 *) Add symmetric cipher support to ENGINE. Expect the API to change!
5716 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
5717 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
5718 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
5719 These allow a CRL to be built without having to access X509_CRL fields
5720 directly. Modify 'ca' application to use new functions.
5723 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
5724 bug workarounds. Rollback attack detection is a security feature.
5725 The problem will only arise on OpenSSL servers when TLSv1 is not
5726 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
5727 Software authors not wanting to support TLSv1 will have special reasons
5728 for their choice and can explicitly enable this option.
5729 [Bodo Moeller, Lutz Jaenicke]
5731 *) Rationalise EVP so it can be extended: don't include a union of
5732 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
5733 (similar to those existing for EVP_CIPHER_CTX).
5738 EVP_MD_CTX_init(&md); /* new function call */
5739 EVP_DigestInit(&md, EVP_sha1());
5740 EVP_DigestUpdate(&md, in, len);
5741 EVP_DigestFinal(&md, out, NULL);
5742 EVP_MD_CTX_cleanup(&md); /* new function call */
5746 *) Make DES key schedule conform to the usual scheme, as well as
5747 correcting its structure. This means that calls to DES functions
5748 now have to pass a pointer to a des_key_schedule instead of a
5749 plain des_key_schedule (which was actually always a pointer
5752 des_key_schedule ks;
5754 des_set_key_checked(..., &ks);
5755 des_ncbc_encrypt(..., &ks, ...);
5757 (Note that a later change renames 'des_...' into 'DES_...'.)
5760 *) Initial reduction of linker bloat: the use of some functions, such as
5761 PEM causes large amounts of unused functions to be linked in due to
5762 poor organisation. For example pem_all.c contains every PEM function
5763 which has a knock on effect of linking in large amounts of (unused)
5764 ASN1 code. Grouping together similar functions and splitting unrelated
5765 functions prevents this.
5768 *) Cleanup of EVP macros.
5771 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
5772 correct _ecb suffix.
5775 *) Add initial OCSP responder support to ocsp application. The
5776 revocation information is handled using the text based index
5777 use by the ca application. The responder can either handle
5778 requests generated internally, supplied in files (for example
5779 via a CGI script) or using an internal minimal server.
5782 *) Add configuration choices to get zlib compression for TLS.
5785 *) Changes to Kerberos SSL for RFC 2712 compliance:
5786 1. Implemented real KerberosWrapper, instead of just using
5787 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
5788 2. Implemented optional authenticator field of KerberosWrapper.
5790 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
5791 and authenticator structs; see crypto/krb5/.
5793 Generalized Kerberos calls to support multiple Kerberos libraries.
5794 [Vern Staats <staatsvr@asc.hpc.mil>,
5795 Jeffrey Altman <jaltman@columbia.edu>
5796 via Richard Levitte]
5798 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
5799 already does with RSA. testdsa.h now has 'priv_key/pub_key'
5800 values for each of the key sizes rather than having just
5801 parameters (and 'speed' generating keys each time).
5804 *) Speed up EVP routines.
5807 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
5808 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
5809 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
5810 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
5812 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
5813 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
5814 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
5817 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
5819 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
5822 *) Added the OS2-EMX target.
5823 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
5825 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
5826 to support NCONF routines in extension code. New function CONF_set_nconf()
5827 to allow functions which take an NCONF to also handle the old LHASH
5828 structure: this means that the old CONF compatible routines can be
5829 retained (in particular wrt extensions) without having to duplicate the
5830 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
5833 *) Enhance the general user interface with mechanisms for inner control
5834 and with possibilities to have yes/no kind of prompts.
5837 *) Change all calls to low level digest routines in the library and
5838 applications to use EVP. Add missing calls to HMAC_cleanup() and
5839 don't assume HMAC_CTX can be copied using memcpy().
5840 [Verdon Walker <VWalker@novell.com>, Steve Henson]
5842 *) Add the possibility to control engines through control names but with
5843 arbitrary arguments instead of just a string.
5844 Change the key loaders to take a UI_METHOD instead of a callback
5845 function pointer. NOTE: this breaks binary compatibility with earlier
5846 versions of OpenSSL [engine].
5847 Adapt the nCipher code for these new conditions and add a card insertion
5851 *) Enhance the general user interface with mechanisms to better support
5852 dialog box interfaces, application-defined prompts, the possibility
5853 to use defaults (for example default passwords from somewhere else)
5854 and interrupts/cancellations.
5857 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
5858 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
5861 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
5862 tidy up some unnecessarily weird code in 'sk_new()').
5863 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
5865 *) Change the key loading routines for ENGINEs to use the same kind
5866 callback (pem_password_cb) as all other routines that need this
5870 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
5871 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
5872 than this minimum value is recommended.
5875 *) New random seeder for OpenVMS, using the system process statistics
5876 that are easily reachable.
5879 *) Windows apparently can't transparently handle global
5880 variables defined in DLLs. Initialisations such as:
5882 const ASN1_ITEM *it = &ASN1_INTEGER_it;
5884 wont compile. This is used by the any applications that need to
5885 declare their own ASN1 modules. This was fixed by adding the option
5886 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
5887 needed for static libraries under Win32.
5890 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
5891 setting of purpose and trust fields. New X509_STORE trust and
5892 purpose functions and tidy up setting in other SSL functions.
5895 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
5896 structure. These are inherited by X509_STORE_CTX when it is
5897 initialised. This allows various defaults to be set in the
5898 X509_STORE structure (such as flags for CRL checking and custom
5899 purpose or trust settings) for functions which only use X509_STORE_CTX
5900 internally such as S/MIME.
5902 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
5903 trust settings if they are not set in X509_STORE. This allows X509_STORE
5904 purposes and trust (in S/MIME for example) to override any set by default.
5906 Add command line options for CRL checking to smime, s_client and s_server
5910 *) Initial CRL based revocation checking. If the CRL checking flag(s)
5911 are set then the CRL is looked up in the X509_STORE structure and
5912 its validity and signature checked, then if the certificate is found
5913 in the CRL the verify fails with a revoked error.
5915 Various new CRL related callbacks added to X509_STORE_CTX structure.
5917 Command line options added to 'verify' application to support this.
5919 This needs some additional work, such as being able to handle multiple
5920 CRLs with different times, extension based lookup (rather than just
5921 by subject name) and ultimately more complete V2 CRL extension
5925 *) Add a general user interface API (crypto/ui/). This is designed
5926 to replace things like des_read_password and friends (backward
5927 compatibility functions using this new API are provided).
5928 The purpose is to remove prompting functions from the DES code
5929 section as well as provide for prompting through dialog boxes in
5930 a window system and the like.
5933 *) Add "ex_data" support to ENGINE so implementations can add state at a
5934 per-structure level rather than having to store it globally.
5937 *) Make it possible for ENGINE structures to be copied when retrieved by
5938 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
5939 This causes the "original" ENGINE structure to act like a template,
5940 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
5941 operational state can be localised to each ENGINE structure, despite the
5942 fact they all share the same "methods". New ENGINE structures returned in
5943 this case have no functional references and the return value is the single
5944 structural reference. This matches the single structural reference returned
5945 by ENGINE_by_id() normally, when it is incremented on the pre-existing
5949 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
5950 needs to match any other type at all we need to manually clear the
5954 *) Changes to the "openssl engine" utility to include;
5955 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
5956 about an ENGINE's available control commands.
5957 - executing control commands from command line arguments using the
5958 '-pre' and '-post' switches. '-post' is only used if '-t' is
5959 specified and the ENGINE is successfully initialised. The syntax for
5960 the individual commands are colon-separated, for example;
5961 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
5964 *) New dynamic control command support for ENGINEs. ENGINEs can now
5965 declare their own commands (numbers), names (strings), descriptions,
5966 and input types for run-time discovery by calling applications. A
5967 subset of these commands are implicitly classed as "executable"
5968 depending on their input type, and only these can be invoked through
5969 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
5970 can be based on user input, config files, etc). The distinction is
5971 that "executable" commands cannot return anything other than a boolean
5972 result and can only support numeric or string input, whereas some
5973 discoverable commands may only be for direct use through
5974 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
5975 pointers, or other custom uses. The "executable" commands are to
5976 support parameterisations of ENGINE behaviour that can be
5977 unambiguously defined by ENGINEs and used consistently across any
5978 OpenSSL-based application. Commands have been added to all the
5979 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
5980 control over shared-library paths without source code alterations.
5983 *) Changed all ENGINE implementations to dynamically allocate their
5984 ENGINEs rather than declaring them statically. Apart from this being
5985 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
5986 this also allows the implementations to compile without using the
5987 internal engine_int.h header.
5990 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
5991 'const' value. Any code that should be able to modify a RAND_METHOD
5992 should already have non-const pointers to it (ie. they should only
5993 modify their own ones).
5996 *) Made a variety of little tweaks to the ENGINE code.
5997 - "atalla" and "ubsec" string definitions were moved from header files
5998 to C code. "nuron" string definitions were placed in variables
5999 rather than hard-coded - allowing parameterisation of these values
6000 later on via ctrl() commands.
6001 - Removed unused "#if 0"'d code.
6002 - Fixed engine list iteration code so it uses ENGINE_free() to release
6003 structural references.
6004 - Constified the RAND_METHOD element of ENGINE structures.
6005 - Constified various get/set functions as appropriate and added
6006 missing functions (including a catch-all ENGINE_cpy that duplicates
6007 all ENGINE values onto a new ENGINE except reference counts/state).
6008 - Removed NULL parameter checks in get/set functions. Setting a method
6009 or function to NULL is a way of cancelling out a previously set
6010 value. Passing a NULL ENGINE parameter is just plain stupid anyway
6011 and doesn't justify the extra error symbols and code.
6012 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
6013 flags from engine_int.h to engine.h.
6014 - Changed prototypes for ENGINE handler functions (init(), finish(),
6015 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
6018 *) Implement binary inversion algorithm for BN_mod_inverse in addition
6019 to the algorithm using long division. The binary algorithm can be
6020 used only if the modulus is odd. On 32-bit systems, it is faster
6021 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
6022 roughly 5-15% for 256-bit moduli), so we use it only for moduli
6023 up to 450 bits. In 64-bit environments, the binary algorithm
6024 appears to be advantageous for much longer moduli; here we use it
6025 for moduli up to 2048 bits.
6028 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
6029 could not support the combine flag in choice fields.
6032 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
6033 extensions from a certificate request to the certificate.
6036 *) Allow multiple 'certopt' and 'nameopt' options to be separated
6037 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
6038 file: this allows the display of the certificate about to be
6039 signed to be customised, to allow certain fields to be included
6040 or excluded and extension details. The old system didn't display
6041 multicharacter strings properly, omitted fields not in the policy
6042 and couldn't display additional details such as extensions.
6045 *) Function EC_POINTs_mul for multiple scalar multiplication
6046 of an arbitrary number of elliptic curve points
6047 \sum scalars[i]*points[i],
6048 optionally including the generator defined for the EC_GROUP:
6049 scalar*generator + \sum scalars[i]*points[i].
6051 EC_POINT_mul is a simple wrapper function for the typical case
6052 that the point list has just one item (besides the optional
6056 *) First EC_METHODs for curves over GF(p):
6058 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
6059 operations and provides various method functions that can also
6060 operate with faster implementations of modular arithmetic.
6062 EC_GFp_mont_method() reuses most functions that are part of
6063 EC_GFp_simple_method, but uses Montgomery arithmetic.
6065 [Bodo Moeller; point addition and point doubling
6066 implementation directly derived from source code provided by
6067 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
6069 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
6070 crypto/ec/ec_lib.c):
6072 Curves are EC_GROUP objects (with an optional group generator)
6073 based on EC_METHODs that are built into the library.
6075 Points are EC_POINT objects based on EC_GROUP objects.
6077 Most of the framework would be able to handle curves over arbitrary
6078 finite fields, but as there are no obvious types for fields other
6079 than GF(p), some functions are limited to that for now.
6082 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
6083 that the file contains a complete HTTP response.
6086 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
6087 change the def and num file printf format specifier from "%-40sXXX"
6088 to "%-39s XXX". The latter will always guarantee a space after the
6089 field while the former will cause them to run together if the field
6090 is 40 of more characters long.
6093 *) Constify the cipher and digest 'method' functions and structures
6094 and modify related functions to take constant EVP_MD and EVP_CIPHER
6098 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
6099 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
6102 *) Modify EVP_Digest*() routines so they now return values. Although the
6103 internal software routines can never fail additional hardware versions
6107 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
6109 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
6110 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
6113 ERR_R_NESTED_ASN1_ERROR
6115 ERR_R_MISSING_ASN1_EOS
6116 were 4 .. 9, conflicting with
6117 ERR_LIB_RSA (= ERR_R_RSA_LIB)
6119 ERR_LIB_PEM (= ERR_R_PEM_LIB).
6120 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
6122 Add new error code 'ERR_R_INTERNAL_ERROR'.
6125 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
6129 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
6130 sets the subject name for a new request or supersedes the
6131 subject name in a given request. Formats that can be parsed are
6132 'CN=Some Name, OU=myOU, C=IT'
6134 'CN=Some Name/OU=myOU/C=IT'.
6136 Add options '-batch' and '-verbose' to 'openssl req'.
6137 [Massimiliano Pala <madwolf@hackmasters.net>]
6139 *) Introduce the possibility to access global variables through
6140 functions on platform were that's the best way to handle exporting
6141 global variables in shared libraries. To enable this functionality,
6142 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
6143 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
6144 is normally done by Configure or something similar).
6146 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
6147 in the source file (foo.c) like this:
6149 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
6150 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
6152 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
6153 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
6155 OPENSSL_DECLARE_GLOBAL(int,foo);
6156 #define foo OPENSSL_GLOBAL_REF(foo)
6157 OPENSSL_DECLARE_GLOBAL(double,bar);
6158 #define bar OPENSSL_GLOBAL_REF(bar)
6160 The #defines are very important, and therefore so is including the
6161 header file everywhere where the defined globals are used.
6163 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
6164 of ASN.1 items, but that structure is a bit different.
6166 The largest change is in util/mkdef.pl which has been enhanced with
6167 better and easier to understand logic to choose which symbols should
6168 go into the Windows .def files as well as a number of fixes and code
6169 cleanup (among others, algorithm keywords are now sorted
6170 lexicographically to avoid constant rewrites).
6173 *) In BN_div() keep a copy of the sign of 'num' before writing the
6174 result to 'rm' because if rm==num the value will be overwritten
6175 and produce the wrong result if 'num' is negative: this caused
6176 problems with BN_mod() and BN_nnmod().
6179 *) Function OCSP_request_verify(). This checks the signature on an
6180 OCSP request and verifies the signer certificate. The signer
6181 certificate is just checked for a generic purpose and OCSP request
6185 *) Add OCSP_check_validity() function to check the validity of OCSP
6186 responses. OCSP responses are prepared in real time and may only
6187 be a few seconds old. Simply checking that the current time lies
6188 between thisUpdate and nextUpdate max reject otherwise valid responses
6189 caused by either OCSP responder or client clock inaccuracy. Instead
6190 we allow thisUpdate and nextUpdate to fall within a certain period of
6191 the current time. The age of the response can also optionally be
6192 checked. Two new options -validity_period and -status_age added to
6196 *) If signature or public key algorithm is unrecognized print out its
6197 OID rather that just UNKNOWN.
6200 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
6201 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
6202 ID to be generated from the issuer certificate alone which can then be
6203 passed to OCSP_id_issuer_cmp().
6206 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
6207 ASN1 modules to export functions returning ASN1_ITEM pointers
6208 instead of the ASN1_ITEM structures themselves. This adds several
6209 new macros which allow the underlying ASN1 function/structure to
6210 be accessed transparently. As a result code should not use ASN1_ITEM
6211 references directly (such as &X509_it) but instead use the relevant
6212 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
6213 use of the new ASN1 code on platforms where exporting structures
6214 is problematical (for example in shared libraries) but exporting
6215 functions returning pointers to structures is not.
6218 *) Add support for overriding the generation of SSL/TLS session IDs.
6219 These callbacks can be registered either in an SSL_CTX or per SSL.
6220 The purpose of this is to allow applications to control, if they wish,
6221 the arbitrary values chosen for use as session IDs, particularly as it
6222 can be useful for session caching in multiple-server environments. A
6223 command-line switch for testing this (and any client code that wishes
6224 to use such a feature) has been added to "s_server".
6225 [Geoff Thorpe, Lutz Jaenicke]
6227 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
6228 of the form '#if defined(...) || defined(...) || ...' and
6229 '#if !defined(...) && !defined(...) && ...'. This also avoids
6230 the growing number of special cases it was previously handling.
6233 *) Make all configuration macros available for application by making
6234 sure they are available in opensslconf.h, by giving them names starting
6235 with "OPENSSL_" to avoid conflicts with other packages and by making
6236 sure e_os2.h will cover all platform-specific cases together with
6238 Additionally, it is now possible to define configuration/platform-
6239 specific names (called "system identities"). In the C code, these
6240 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
6241 macro with the name beginning with "OPENSSL_SYS_", which is determined
6242 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
6246 *) New option -set_serial to 'req' and 'x509' this allows the serial
6247 number to use to be specified on the command line. Previously self
6248 signed certificates were hard coded with serial number 0 and the
6249 CA options of 'x509' had to use a serial number in a file which was
6253 *) New options to 'ca' utility to support V2 CRL entry extensions.
6254 Currently CRL reason, invalidity date and hold instruction are
6255 supported. Add new CRL extensions to V3 code and some new objects.
6258 *) New function EVP_CIPHER_CTX_set_padding() this is used to
6259 disable standard block padding (aka PKCS#5 padding) in the EVP
6260 API, which was previously mandatory. This means that the data is
6261 not padded in any way and so the total length much be a multiple
6262 of the block size, otherwise an error occurs.
6265 *) Initial (incomplete) OCSP SSL support.
6268 *) New function OCSP_parse_url(). This splits up a URL into its host,
6269 port and path components: primarily to parse OCSP URLs. New -url
6270 option to ocsp utility.
6273 *) New nonce behavior. The return value of OCSP_check_nonce() now
6274 reflects the various checks performed. Applications can decide
6275 whether to tolerate certain situations such as an absent nonce
6276 in a response when one was present in a request: the ocsp application
6277 just prints out a warning. New function OCSP_add1_basic_nonce()
6278 this is to allow responders to include a nonce in a response even if
6279 the request is nonce-less.
6282 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
6283 skipped when using openssl x509 multiple times on a single input file,
6284 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
6287 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
6288 set string type: to handle setting ASN1_TIME structures. Fix ca
6289 utility to correctly initialize revocation date of CRLs.
6292 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
6293 the clients preferred ciphersuites and rather use its own preferences.
6294 Should help to work around M$ SGC (Server Gated Cryptography) bug in
6295 Internet Explorer by ensuring unchanged hash method during stepup.
6296 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
6299 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
6300 to aes and add a new 'exist' option to print out symbols that don't
6304 *) Additional options to ocsp utility to allow flags to be set and
6305 additional certificates supplied.
6308 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
6309 OCSP client a number of certificate to only verify the response
6313 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
6314 handle the new API. Currently only ECB, CBC modes supported. Add new
6317 Add TLS AES ciphersuites as described in RFC3268, "Advanced
6318 Encryption Standard (AES) Ciphersuites for Transport Layer
6319 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
6320 not enabled by default and were not part of the "ALL" ciphersuite
6321 alias because they were not yet official; they could be
6322 explicitly requested by specifying the "AESdraft" ciphersuite
6323 group alias. In the final release of OpenSSL 0.9.7, the group
6324 alias is called "AES" and is part of "ALL".)
6325 [Ben Laurie, Steve Henson, Bodo Moeller]
6327 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
6328 request to response.
6331 *) Functions for OCSP responders. OCSP_request_onereq_count(),
6332 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
6333 extract information from a certificate request. OCSP_response_create()
6334 creates a response and optionally adds a basic response structure.
6335 OCSP_basic_add1_status() adds a complete single response to a basic
6336 response and returns the OCSP_SINGLERESP structure just added (to allow
6337 extensions to be included for example). OCSP_basic_add1_cert() adds a
6338 certificate to a basic response and OCSP_basic_sign() signs a basic
6339 response with various flags. New helper functions ASN1_TIME_check()
6340 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
6341 (converts ASN1_TIME to GeneralizedTime).
6344 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
6345 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
6346 structure from a certificate. X509_pubkey_digest() digests the public_key
6347 contents: this is used in various key identifiers.
6350 *) Make sk_sort() tolerate a NULL argument.
6351 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
6353 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
6354 passed by the function are trusted implicitly. If any of them signed the
6355 response then it is assumed to be valid and is not verified.
6358 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
6359 to data. This was previously part of the PKCS7 ASN1 code. This
6360 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
6361 [Steve Henson, reported by Kenneth R. Robinette
6362 <support@securenetterm.com>]
6364 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
6365 routines: without these tracing memory leaks is very painful.
6366 Fix leaks in PKCS12 and PKCS7 routines.
6369 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
6370 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
6371 effectively meant GeneralizedTime would never be used. Now it
6372 is initialised to -1 but X509_time_adj() now has to check the value
6373 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
6374 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
6375 [Steve Henson, reported by Kenneth R. Robinette
6376 <support@securenetterm.com>]
6378 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
6379 result in a zero length in the ASN1_INTEGER structure which was
6380 not consistent with the structure when d2i_ASN1_INTEGER() was used
6381 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
6382 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
6383 where it did not print out a minus for negative ASN1_INTEGER.
6386 *) Add summary printout to ocsp utility. The various functions which
6387 convert status values to strings have been renamed to:
6388 OCSP_response_status_str(), OCSP_cert_status_str() and
6389 OCSP_crl_reason_str() and are no longer static. New options
6390 to verify nonce values and to disable verification. OCSP response
6391 printout format cleaned up.
6394 *) Add additional OCSP certificate checks. These are those specified
6395 in RFC2560. This consists of two separate checks: the CA of the
6396 certificate being checked must either be the OCSP signer certificate
6397 or the issuer of the OCSP signer certificate. In the latter case the
6398 OCSP signer certificate must contain the OCSP signing extended key
6399 usage. This check is performed by attempting to match the OCSP
6400 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
6401 in the OCSP_CERTID structures of the response.
6404 *) Initial OCSP certificate verification added to OCSP_basic_verify()
6405 and related routines. This uses the standard OpenSSL certificate
6406 verify routines to perform initial checks (just CA validity) and
6407 to obtain the certificate chain. Then additional checks will be
6408 performed on the chain. Currently the root CA is checked to see
6409 if it is explicitly trusted for OCSP signing. This is used to set
6410 a root CA as a global signing root: that is any certificate that
6411 chains to that CA is an acceptable OCSP signing certificate.
6414 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
6415 extensions from a separate configuration file.
6416 As when reading extensions from the main configuration file,
6417 the '-extensions ...' option may be used for specifying the
6419 [Massimiliano Pala <madwolf@comune.modena.it>]
6421 *) New OCSP utility. Allows OCSP requests to be generated or
6422 read. The request can be sent to a responder and the output
6423 parsed, outputed or printed in text form. Not complete yet:
6424 still needs to check the OCSP response validity.
6427 *) New subcommands for 'openssl ca':
6428 'openssl ca -status <serial>' prints the status of the cert with
6429 the given serial number (according to the index file).
6430 'openssl ca -updatedb' updates the expiry status of certificates
6432 [Massimiliano Pala <madwolf@comune.modena.it>]
6434 *) New '-newreq-nodes' command option to CA.pl. This is like
6435 '-newreq', but calls 'openssl req' with the '-nodes' option
6436 so that the resulting key is not encrypted.
6437 [Damien Miller <djm@mindrot.org>]
6439 *) New configuration for the GNU Hurd.
6440 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
6442 *) Initial code to implement OCSP basic response verify. This
6443 is currently incomplete. Currently just finds the signer's
6444 certificate and verifies the signature on the response.
6447 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
6448 value of OPENSSLDIR. This is available via the new '-d' option
6449 to 'openssl version', and is also included in 'openssl version -a'.
6452 *) Allowing defining memory allocation callbacks that will be given
6453 file name and line number information in additional arguments
6454 (a const char* and an int). The basic functionality remains, as
6455 well as the original possibility to just replace malloc(),
6456 realloc() and free() by functions that do not know about these
6457 additional arguments. To register and find out the current
6458 settings for extended allocation functions, the following
6459 functions are provided:
6461 CRYPTO_set_mem_ex_functions
6462 CRYPTO_set_locked_mem_ex_functions
6463 CRYPTO_get_mem_ex_functions
6464 CRYPTO_get_locked_mem_ex_functions
6466 These work the same way as CRYPTO_set_mem_functions and friends.
6467 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
6468 extended allocation function is enabled.
6469 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
6470 a conventional allocation function is enabled.
6471 [Richard Levitte, Bodo Moeller]
6473 *) Finish off removing the remaining LHASH function pointer casts.
6474 There should no longer be any prototype-casting required when using
6475 the LHASH abstraction, and any casts that remain are "bugs". See
6476 the callback types and macros at the head of lhash.h for details
6477 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
6480 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
6481 If /dev/[u]random devices are not available or do not return enough
6482 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
6484 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
6485 /etc/entropy will be queried once each in this sequence, quering stops
6486 when enough entropy was collected without querying more sockets.
6489 *) Change the Unix RAND_poll() variant to be able to poll several
6490 random devices, as specified by DEVRANDOM, until a sufficient amount
6491 of data has been collected. We spend at most 10 ms on each file
6492 (select timeout) and read in non-blocking mode. DEVRANDOM now
6493 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
6494 (previously it was just the string "/dev/urandom"), so on typical
6495 platforms the 10 ms delay will never occur.
6496 Also separate out the Unix variant to its own file, rand_unix.c.
6497 For VMS, there's a currently-empty rand_vms.c.
6500 *) Move OCSP client related routines to ocsp_cl.c. These
6501 provide utility functions which an application needing
6502 to issue a request to an OCSP responder and analyse the
6503 response will typically need: as opposed to those which an
6504 OCSP responder itself would need which will be added later.
6506 OCSP_request_sign() signs an OCSP request with an API similar
6507 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
6508 response. OCSP_response_get1_basic() extracts basic response
6509 from response. OCSP_resp_find_status(): finds and extracts status
6510 information from an OCSP_CERTID structure (which will be created
6511 when the request structure is built). These are built from lower
6512 level functions which work on OCSP_SINGLERESP structures but
6513 wont normally be used unless the application wishes to examine
6514 extensions in the OCSP response for example.
6516 Replace nonce routines with a pair of functions.
6517 OCSP_request_add1_nonce() adds a nonce value and optionally
6518 generates a random value. OCSP_check_nonce() checks the
6519 validity of the nonce in an OCSP response.
6522 *) Change function OCSP_request_add() to OCSP_request_add0_id().
6523 This doesn't copy the supplied OCSP_CERTID and avoids the
6524 need to free up the newly created id. Change return type
6525 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
6526 This can then be used to add extensions to the request.
6527 Deleted OCSP_request_new(), since most of its functionality
6528 is now in OCSP_REQUEST_new() (and the case insensitive name
6529 clash) apart from the ability to set the request name which
6530 will be added elsewhere.
6533 *) Update OCSP API. Remove obsolete extensions argument from
6534 various functions. Extensions are now handled using the new
6535 OCSP extension code. New simple OCSP HTTP function which
6536 can be used to send requests and parse the response.
6539 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
6540 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
6541 uses the special reorder version of SET OF to sort the attributes
6542 and reorder them to match the encoded order. This resolves a long
6543 standing problem: a verify on a PKCS7 structure just after signing
6544 it used to fail because the attribute order did not match the
6545 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
6546 it uses the received order. This is necessary to tolerate some broken
6547 software that does not order SET OF. This is handled by encoding
6548 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
6549 to produce the required SET OF.
6552 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
6553 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
6554 files to get correct declarations of the ASN.1 item variables.
6557 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
6558 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
6559 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
6560 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
6561 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
6562 ASN1_ITEM and no wrapper functions.
6565 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
6566 replace the old function pointer based I/O routines. Change most of
6567 the *_d2i_bio() and *_d2i_fp() functions to use these.
6570 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
6571 lines, recognice more "algorithms" that can be deselected, and make
6572 it complain about algorithm deselection that isn't recognised.
6575 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
6576 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
6577 to use new functions. Add NO_ASN1_OLD which can be set to remove
6578 some old style ASN1 functions: this can be used to determine if old
6579 code will still work when these eventually go away.
6582 *) New extension functions for OCSP structures, these follow the
6583 same conventions as certificates and CRLs.
6586 *) New function X509V3_add1_i2d(). This automatically encodes and
6587 adds an extension. Its behaviour can be customised with various
6588 flags to append, replace or delete. Various wrappers added for
6589 certifcates and CRLs.
6592 *) Fix to avoid calling the underlying ASN1 print routine when
6593 an extension cannot be parsed. Correct a typo in the
6594 OCSP_SERVICELOC extension. Tidy up print OCSP format.
6597 *) Make mkdef.pl parse some of the ASN1 macros and add appropriate
6598 entries for variables.
6601 *) Add functionality to apps/openssl.c for detecting locking
6602 problems: As the program is single-threaded, all we have
6603 to do is register a locking callback using an array for
6604 storing which locks are currently held by the program.
6607 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
6608 SSL_get_ex_data_X509_STORE_idx(), which is used in
6609 ssl_verify_cert_chain() and thus can be called at any time
6610 during TLS/SSL handshakes so that thread-safety is essential.
6611 Unfortunately, the ex_data design is not at all suited
6612 for multi-threaded use, so it probably should be abolished.
6615 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
6616 [Broadcom, tweaked and integrated by Geoff Thorpe]
6618 *) Move common extension printing code to new function
6619 X509V3_print_extensions(). Reorganise OCSP print routines and
6620 implement some needed OCSP ASN1 functions. Add OCSP extensions.
6623 *) New function X509_signature_print() to remove duplication in some
6627 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
6628 set (this was treated exactly the same as SET OF previously). This
6629 is used to reorder the STACK representing the structure to match the
6630 encoding. This will be used to get round a problem where a PKCS7
6631 structure which was signed could not be verified because the STACK
6632 order did not reflect the encoded order.
6635 *) Reimplement the OCSP ASN1 module using the new code.
6638 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
6639 for its ASN1 operations. The old style function pointers still exist
6640 for now but they will eventually go away.
6643 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
6644 completely replaces the old ASN1 functionality with a table driven
6645 encoder and decoder which interprets an ASN1_ITEM structure describing
6646 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
6647 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
6648 has also been converted to the new form.
6651 *) Change BN_mod_exp_recp so that negative moduli are tolerated
6652 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
6653 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
6654 for negative moduli.
6657 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
6658 of not touching the result's sign bit.
6661 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
6665 *) Changed the LHASH code to use prototypes for callbacks, and created
6666 macros to declare and implement thin (optionally static) functions
6667 that provide type-safety and avoid function pointer casting for the
6668 type-specific callbacks.
6671 *) Added Kerberos Cipher Suites to be used with TLS, as written in
6673 [Veers Staats <staatsvr@asc.hpc.mil>,
6674 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
6676 *) Reformat the FAQ so the different questions and answers can be divided
6677 in sections depending on the subject.
6680 *) Have the zlib compression code load ZLIB.DLL dynamically under
6684 *) New function BN_mod_sqrt for computing square roots modulo a prime
6685 (using the probabilistic Tonelli-Shanks algorithm unless
6686 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
6687 be handled deterministically).
6688 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
6690 *) Make BN_mod_inverse faster by explicitly handling small quotients
6691 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
6692 512 bits], about 30% for larger ones [1024 or 2048 bits].)
6695 *) New function BN_kronecker.
6698 *) Fix BN_gcd so that it works on negative inputs; the result is
6699 positive unless both parameters are zero.
6700 Previously something reasonably close to an infinite loop was
6701 possible because numbers could be growing instead of shrinking
6702 in the implementation of Euclid's algorithm.
6705 *) Fix BN_is_word() and BN_is_one() macros to take into account the
6706 sign of the number in question.
6708 Fix BN_is_word(a,w) to work correctly for w == 0.
6710 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
6711 because its test if the absolute value of 'a' equals 'w'.
6712 Note that BN_abs_is_word does *not* handle w == 0 reliably;
6713 it exists mostly for use in the implementations of BN_is_zero(),
6714 BN_is_one(), and BN_is_word().
6717 *) New function BN_swap.
6720 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
6721 the exponentiation functions are more likely to produce reasonable
6722 results on negative inputs.
6725 *) Change BN_mod_mul so that the result is always non-negative.
6726 Previously, it could be negative if one of the factors was negative;
6727 I don't think anyone really wanted that behaviour.
6730 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
6731 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
6732 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
6733 and add new functions:
6742 BN_mod_lshift1_quick
6746 These functions always generate non-negative results.
6748 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
6749 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
6751 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
6752 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
6753 be reduced modulo m.
6754 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
6757 The following entry accidentally appeared in the CHANGES file
6758 distributed with OpenSSL 0.9.7. The modifications described in
6759 it do *not* apply to OpenSSL 0.9.7.
6761 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
6762 was actually never needed) and in BN_mul(). The removal in BN_mul()
6763 required a small change in bn_mul_part_recursive() and the addition
6764 of the functions bn_cmp_part_words(), bn_sub_part_words() and
6765 bn_add_part_words(), which do the same thing as bn_cmp_words(),
6766 bn_sub_words() and bn_add_words() except they take arrays with
6771 *) In 'openssl passwd', verify passwords read from the terminal
6772 unless the '-salt' option is used (which usually means that
6773 verification would just waste user's time since the resulting
6774 hash is going to be compared with some given password hash)
6775 or the new '-noverify' option is used.
6777 This is an incompatible change, but it does not affect
6778 non-interactive use of 'openssl passwd' (passwords on the command
6779 line, '-stdin' option, '-in ...' option) and thus should not
6783 *) Remove all references to RSAref, since there's no more need for it.
6786 *) Make DSO load along a path given through an environment variable
6787 (SHLIB_PATH) with shl_load().
6790 *) Constify the ENGINE code as a result of BIGNUM constification.
6791 Also constify the RSA code and most things related to it. In a
6792 few places, most notable in the depth of the ASN.1 code, ugly
6793 casts back to non-const were required (to be solved at a later
6797 *) Make it so the openssl application has all engines loaded by default.
6800 *) Constify the BIGNUM routines a little more.
6803 *) Add the following functions:
6805 ENGINE_load_cswift()
6807 ENGINE_load_atalla()
6809 ENGINE_load_builtin_engines()
6811 That way, an application can itself choose if external engines that
6812 are built-in in OpenSSL shall ever be used or not. The benefit is
6813 that applications won't have to be linked with libdl or other dso
6814 libraries unless it's really needed.
6816 Changed 'openssl engine' to load all engines on demand.
6817 Changed the engine header files to avoid the duplication of some
6818 declarations (they differed!).
6821 *) 'openssl engine' can now list capabilities.
6824 *) Better error reporting in 'openssl engine'.
6827 *) Never call load_dh_param(NULL) in s_server.
6830 *) Add engine application. It can currently list engines by name and
6831 identity, and test if they are actually available.
6834 *) Improve RPM specification file by forcing symbolic linking and making
6835 sure the installed documentation is also owned by root.root.
6836 [Damien Miller <djm@mindrot.org>]
6838 *) Give the OpenSSL applications more possibilities to make use of
6839 keys (public as well as private) handled by engines.
6842 *) Add OCSP code that comes from CertCo.
6845 *) Add VMS support for the Rijndael code.
6848 *) Added untested support for Nuron crypto accelerator.
6851 *) Add support for external cryptographic devices. This code was
6852 previously distributed separately as the "engine" branch.
6853 [Geoff Thorpe, Richard Levitte]
6855 *) Rework the filename-translation in the DSO code. It is now possible to
6856 have far greater control over how a "name" is turned into a filename
6857 depending on the operating environment and any oddities about the
6858 different shared library filenames on each system.
6861 *) Support threads on FreeBSD-elf in Configure.
6864 *) Fix for SHA1 assembly problem with MASM: it produces
6865 warnings about corrupt line number information when assembling
6866 with debugging information. This is caused by the overlapping
6868 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
6871 NCONF_get_number() has no error checking at all. As a replacement,
6872 NCONF_get_number_e() is defined (_e for "error checking") and is
6873 promoted strongly. The old NCONF_get_number is kept around for
6874 binary backward compatibility.
6875 Make it possible for methods to load from something other than a BIO,
6876 by providing a function pointer that is given a name instead of a BIO.
6877 For example, this could be used to load configuration data from an
6881 *) Fix for non blocking accept BIOs. Added new I/O special reason
6882 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
6883 with non blocking I/O was not possible because no retry code was
6884 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
6888 *) Added the beginnings of Rijndael support.
6891 *) Fix for bug in DirectoryString mask setting. Add support for
6892 X509_NAME_print_ex() in 'req' and X509_print_ex() function
6893 to allow certificate printing to more controllable, additional
6894 'certopt' option to 'x509' to allow new printing options to be
6898 *) Clean old EAY MD5 hack from e_os.h.
6901 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
6903 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
6904 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
6905 [Joe Orton, Steve Henson]
6907 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
6909 *) Fix additional bug revealed by the NISCC test suite:
6911 Stop bug triggering large recursion when presented with
6912 certain ASN.1 tags (CVE-2003-0851)
6915 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
6917 *) Fix various bugs revealed by running the NISCC test suite:
6919 Stop out of bounds reads in the ASN1 code when presented with
6920 invalid tags (CVE-2003-0543 and CVE-2003-0544).
6922 If verify callback ignores invalid public key errors don't try to check
6923 certificate signature with the NULL public key.
6927 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
6928 if the server requested one: as stated in TLS 1.0 and SSL 3.0
6932 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
6933 extra data after the compression methods not only for TLS 1.0
6934 but also for SSL 3.0 (as required by the specification).
6935 [Bodo Moeller; problem pointed out by Matthias Loepfe]
6937 *) Change X509_certificate_type() to mark the key as exported/exportable
6938 when it's 512 *bits* long, not 512 bytes.
6941 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
6943 *) Countermeasure against the Klima-Pokorny-Rosa extension of
6944 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
6945 a protocol version number mismatch like a decryption error
6946 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
6949 *) Turn on RSA blinding by default in the default implementation
6950 to avoid a timing attack. Applications that don't want it can call
6951 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
6952 They would be ill-advised to do so in most cases.
6953 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
6955 *) Change RSA blinding code so that it works when the PRNG is not
6956 seeded (in this case, the secret RSA exponent is abused as
6957 an unpredictable seed -- if it is not unpredictable, there
6958 is no point in blinding anyway). Make RSA blinding thread-safe
6959 by remembering the creator's thread ID in rsa->blinding and
6960 having all other threads use local one-time blinding factors
6961 (this requires more computation than sharing rsa->blinding, but
6962 avoids excessive locking; and if an RSA object is not shared
6963 between threads, blinding will still be very fast).
6966 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
6968 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
6969 via timing by performing a MAC computation even if incorrrect
6970 block cipher padding has been found. This is a countermeasure
6971 against active attacks where the attacker has to distinguish
6972 between bad padding and a MAC verification error. (CVE-2003-0078)
6974 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
6975 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
6976 Martin Vuagnoux (EPFL, Ilion)]
6978 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
6980 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
6981 memory from it's contents. This is done with a counter that will
6982 place alternating values in each byte. This can be used to solve
6983 two issues: 1) the removal of calls to memset() by highly optimizing
6984 compilers, and 2) cleansing with other values than 0, since those can
6985 be read through on certain media, for example a swap space on disk.
6988 *) Bugfix: client side session caching did not work with external caching,
6989 because the session->cipher setting was not restored when reloading
6990 from the external cache. This problem was masked, when
6991 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
6992 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
6995 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
6996 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
6997 [Zeev Lieber <zeev-l@yahoo.com>]
6999 *) Undo an undocumented change introduced in 0.9.6e which caused
7000 repeated calls to OpenSSL_add_all_ciphers() and
7001 OpenSSL_add_all_digests() to be ignored, even after calling
7005 *) Change the default configuration reader to deal with last line not
7006 being properly terminated.
7009 *) Change X509_NAME_cmp() so it applies the special rules on handling
7010 DN values that are of type PrintableString, as well as RDNs of type
7011 emailAddress where the value has the type ia5String.
7012 [stefank@valicert.com via Richard Levitte]
7014 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
7015 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
7016 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
7017 the bitwise-OR of the two for use by the majority of applications
7018 wanting this behaviour, and update the docs. The documented
7019 behaviour and actual behaviour were inconsistent and had been
7020 changing anyway, so this is more a bug-fix than a behavioural
7022 [Geoff Thorpe, diagnosed by Nadav Har'El]
7024 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
7025 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
7028 *) Fix initialization code race conditions in
7029 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
7030 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
7031 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
7032 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
7033 ssl2_get_cipher_by_char(),
7034 ssl3_get_cipher_by_char().
7035 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
7037 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
7038 the cached sessions are flushed, as the remove_cb() might use ex_data
7039 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
7040 (see [openssl.org #212]).
7041 [Geoff Thorpe, Lutz Jaenicke]
7043 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
7044 length, instead of the encoding length to d2i_ASN1_OBJECT.
7047 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
7049 *) [In 0.9.6g-engine release:]
7050 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
7051 [Lynn Gazis <lgazis@rainbow.com>]
7053 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
7055 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
7056 and get fix the header length calculation.
7057 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
7058 Alon Kantor <alonk@checkpoint.com> (and others),
7061 *) Use proper error handling instead of 'assertions' in buffer
7062 overflow checks added in 0.9.6e. This prevents DoS (the
7063 assertions could call abort()).
7064 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
7066 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
7068 *) Add various sanity checks to asn1_get_length() to reject
7069 the ASN1 length bytes if they exceed sizeof(long), will appear
7070 negative or the content length exceeds the length of the
7072 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
7074 *) Fix cipher selection routines: ciphers without encryption had no flags
7075 for the cipher strength set and where therefore not handled correctly
7076 by the selection routines (PR #130).
7079 *) Fix EVP_dsa_sha macro.
7083 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
7084 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
7085 that was added in OpenSSL 0.9.6d.
7087 As the countermeasure turned out to be incompatible with some
7088 broken SSL implementations, the new option is part of SSL_OP_ALL.
7089 SSL_OP_ALL is usually employed when compatibility with weird SSL
7090 implementations is desired (e.g. '-bugs' option to 's_client' and
7091 's_server'), so the new option is automatically set in many
7095 *) Changes in security patch:
7097 Changes marked "(CHATS)" were sponsored by the Defense Advanced
7098 Research Projects Agency (DARPA) and Air Force Research Laboratory,
7099 Air Force Materiel Command, USAF, under agreement number
7102 *) Add various sanity checks to asn1_get_length() to reject
7103 the ASN1 length bytes if they exceed sizeof(long), will appear
7104 negative or the content length exceeds the length of the
7105 supplied buffer. (CVE-2002-0659)
7106 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
7108 *) Assertions for various potential buffer overflows, not known to
7110 [Ben Laurie (CHATS)]
7112 *) Various temporary buffers to hold ASCII versions of integers were
7113 too small for 64 bit platforms. (CVE-2002-0655)
7114 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
7116 *) Remote buffer overflow in SSL3 protocol - an attacker could
7117 supply an oversized session ID to a client. (CVE-2002-0656)
7118 [Ben Laurie (CHATS)]
7120 *) Remote buffer overflow in SSL2 protocol - an attacker could
7121 supply an oversized client master key. (CVE-2002-0656)
7122 [Ben Laurie (CHATS)]
7124 Changes between 0.9.6c and 0.9.6d [9 May 2002]
7126 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
7127 encoded as NULL) with id-dsa-with-sha1.
7128 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
7130 *) Check various X509_...() return values in apps/req.c.
7131 [Nils Larsch <nla@trustcenter.de>]
7133 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
7134 an end-of-file condition would erronously be flagged, when the CRLF
7135 was just at the end of a processed block. The bug was discovered when
7136 processing data through a buffering memory BIO handing the data to a
7137 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
7138 <ptsekov@syntrex.com> and Nedelcho Stanev.
7141 *) Implement a countermeasure against a vulnerability recently found
7142 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
7143 before application data chunks to avoid the use of known IVs
7144 with data potentially chosen by the attacker.
7147 *) Fix length checks in ssl3_get_client_hello().
7150 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
7151 to prevent ssl3_read_internal() from incorrectly assuming that
7152 ssl3_read_bytes() found application data while handshake
7153 processing was enabled when in fact s->s3->in_read_app_data was
7154 merely automatically cleared during the initial handshake.
7155 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
7157 *) Fix object definitions for Private and Enterprise: they were not
7158 recognized in their shortname (=lowercase) representation. Extend
7159 obj_dat.pl to issue an error when using undefined keywords instead
7160 of silently ignoring the problem (Svenning Sorensen
7161 <sss@sss.dnsalias.net>).
7164 *) Fix DH_generate_parameters() so that it works for 'non-standard'
7165 generators, i.e. generators other than 2 and 5. (Previously, the
7166 code did not properly initialise the 'add' and 'rem' values to
7167 BN_generate_prime().)
7169 In the new general case, we do not insist that 'generator' is
7170 actually a primitive root: This requirement is rather pointless;
7171 a generator of the order-q subgroup is just as good, if not
7175 *) Map new X509 verification errors to alerts. Discovered and submitted by
7176 Tom Wu <tom@arcot.com>.
7179 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
7180 returning non-zero before the data has been completely received
7181 when using non-blocking I/O.
7182 [Bodo Moeller; problem pointed out by John Hughes]
7184 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
7185 [Ben Laurie, Lutz Jaenicke]
7187 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
7188 Yoram Zahavi <YoramZ@gilian.com>).
7191 *) Add information about CygWin 1.3 and on, and preserve proper
7192 configuration for the versions before that.
7193 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
7195 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
7196 check whether we deal with a copy of a session and do not delete from
7197 the cache in this case. Problem reported by "Izhar Shoshani Levi"
7198 <izhar@checkpoint.com>.
7201 *) Do not store session data into the internal session cache, if it
7202 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
7203 flag is set). Proposed by Aslam <aslam@funk.com>.
7206 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
7210 *) [In 0.9.6d-engine release:]
7211 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
7212 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7214 *) Add the configuration target linux-s390x.
7215 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
7217 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
7218 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
7219 variable as an indication that a ClientHello message has been
7220 received. As the flag value will be lost between multiple
7221 invocations of ssl3_accept when using non-blocking I/O, the
7222 function may not be aware that a handshake has actually taken
7223 place, thus preventing a new session from being added to the
7226 To avoid this problem, we now set s->new_session to 2 instead of
7227 using a local variable.
7228 [Lutz Jaenicke, Bodo Moeller]
7230 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
7231 if the SSL_R_LENGTH_MISMATCH error is detected.
7232 [Geoff Thorpe, Bodo Moeller]
7234 *) New 'shared_ldflag' column in Configure platform table.
7237 *) Fix EVP_CIPHER_mode macro.
7238 ["Dan S. Camper" <dan@bti.net>]
7240 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
7241 type, we must throw them away by setting rr->length to 0.
7242 [D P Chang <dpc@qualys.com>]
7244 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
7246 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
7247 <Dominikus.Scherkl@biodata.com>. (The previous implementation
7248 worked incorrectly for those cases where range = 10..._2 and
7249 3*range is two bits longer than range.)
7252 *) Only add signing time to PKCS7 structures if it is not already
7256 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
7257 OBJ_ld_ce should be OBJ_id_ce.
7258 Also some ip-pda OIDs in crypto/objects/objects.txt were
7259 incorrect (cf. RFC 3039).
7260 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
7262 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
7263 returns early because it has nothing to do.
7264 [Andy Schneider <andy.schneider@bjss.co.uk>]
7266 *) [In 0.9.6c-engine release:]
7267 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
7268 [Andy Schneider <andy.schneider@bjss.co.uk>]
7270 *) [In 0.9.6c-engine release:]
7271 Add support for Cryptographic Appliance's keyserver technology.
7272 (Use engine 'keyclient')
7273 [Cryptographic Appliances and Geoff Thorpe]
7275 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
7276 is called via tools/c89.sh because arguments have to be
7277 rearranged (all '-L' options must appear before the first object
7279 [Richard Shapiro <rshapiro@abinitio.com>]
7281 *) [In 0.9.6c-engine release:]
7282 Add support for Broadcom crypto accelerator cards, backported
7284 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
7286 *) [In 0.9.6c-engine release:]
7287 Add support for SureWare crypto accelerator cards from
7288 Baltimore Technologies. (Use engine 'sureware')
7289 [Baltimore Technologies and Mark Cox]
7291 *) [In 0.9.6c-engine release:]
7292 Add support for crypto accelerator cards from Accelerated
7293 Encryption Processing, www.aep.ie. (Use engine 'aep')
7294 [AEP Inc. and Mark Cox]
7296 *) Add a configuration entry for gcc on UnixWare.
7297 [Gary Benson <gbenson@redhat.com>]
7299 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
7300 messages are stored in a single piece (fixed-length part and
7301 variable-length part combined) and fix various bugs found on the way.
7304 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
7305 instead. BIO_gethostbyname() does not know what timeouts are
7306 appropriate, so entries would stay in cache even when they have
7308 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
7310 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
7311 faced with a pathologically small ClientHello fragment that does
7312 not contain client_version: Instead of aborting with an error,
7313 simply choose the highest available protocol version (i.e.,
7314 TLS 1.0 unless it is disabled). In practice, ClientHello
7315 messages are never sent like this, but this change gives us
7316 strictly correct behaviour at least for TLS.
7319 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
7320 never resets s->method to s->ctx->method when called from within
7321 one of the SSL handshake functions.
7322 [Bodo Moeller; problem pointed out by Niko Baric]
7324 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
7325 (sent using the client's version number) if client_version is
7326 smaller than the protocol version in use. Also change
7327 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
7328 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
7329 the client will at least see that alert.
7332 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
7336 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
7337 client receives HelloRequest while in a handshake.
7338 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
7340 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
7341 should end in 'break', not 'goto end' which circumvents various
7342 cleanups done in state SSL_ST_OK. But session related stuff
7343 must be disabled for SSL_ST_OK in the case that we just sent a
7346 Also avoid some overhead by not calling ssl_init_wbio_buffer()
7347 before just sending a HelloRequest.
7348 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
7350 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
7351 reveal whether illegal block cipher padding was found or a MAC
7352 verification error occured. (Neither SSLerr() codes nor alerts
7353 are directly visible to potential attackers, but the information
7354 may leak via logfiles.)
7356 Similar changes are not required for the SSL 2.0 implementation
7357 because the number of padding bytes is sent in clear for SSL 2.0,
7358 and the extra bytes are just ignored. However ssl/s2_pkt.c
7359 failed to verify that the purported number of padding bytes is in
7363 *) Add OpenUNIX-8 support including shared libraries
7364 (Boyd Lynn Gerber <gerberb@zenez.com>).
7367 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
7368 'wristwatch attack' using huge encoding parameters (cf.
7369 James H. Manger's CRYPTO 2001 paper). Note that the
7370 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
7371 encoding parameters and hence was not vulnerable.
7374 *) BN_sqr() bug fix.
7375 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
7377 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
7378 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
7379 followed by modular reduction.
7380 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
7382 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
7383 equivalent based on BN_pseudo_rand() instead of BN_rand().
7386 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
7387 This function was broken, as the check for a new client hello message
7388 to handle SGC did not allow these large messages.
7389 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
7392 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
7395 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
7396 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
7399 *) Rework the configuration and shared library support for Tru64 Unix.
7400 The configuration part makes use of modern compiler features and
7401 still retains old compiler behavior for those that run older versions
7402 of the OS. The shared library support part includes a variant that
7403 uses the RPATH feature, and is available through the special
7404 configuration target "alpha-cc-rpath", which will never be selected
7406 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
7408 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
7409 with the same message size as in ssl3_get_certificate_request().
7410 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
7411 messages might inadvertently be reject as too long.
7412 [Petr Lampa <lampa@fee.vutbr.cz>]
7414 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
7417 *) Modified SSL library such that the verify_callback that has been set
7418 specificly for an SSL object with SSL_set_verify() is actually being
7419 used. Before the change, a verify_callback set with this function was
7420 ignored and the verify_callback() set in the SSL_CTX at the time of
7421 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
7422 to allow the necessary settings.
7425 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
7426 explicitly to NULL, as at least on Solaris 8 this seems not always to be
7427 done automatically (in contradiction to the requirements of the C
7428 standard). This made problems when used from OpenSSH.
7431 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
7432 dh->length and always used
7434 BN_rand_range(priv_key, dh->p).
7436 BN_rand_range() is not necessary for Diffie-Hellman, and this
7437 specific range makes Diffie-Hellman unnecessarily inefficient if
7438 dh->length (recommended exponent length) is much smaller than the
7439 length of dh->p. We could use BN_rand_range() if the order of
7440 the subgroup was stored in the DH structure, but we only have
7445 BN_rand(priv_key, l, ...)
7447 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
7453 RSA_eay_public_encrypt
7454 RSA_eay_private_decrypt
7455 RSA_eay_private_encrypt (signing)
7456 RSA_eay_public_decrypt (signature verification)
7458 (default implementations for RSA_public_encrypt,
7459 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
7460 always reject numbers >= n.
7463 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
7464 to synchronize access to 'locking_thread'. This is necessary on
7465 systems where access to 'locking_thread' (an 'unsigned long'
7466 variable) is not atomic.
7469 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
7470 *before* setting the 'crypto_lock_rand' flag. The previous code had
7471 a race condition if 0 is a valid thread ID.
7472 [Travis Vitek <vitek@roguewave.com>]
7474 *) Add support for shared libraries under Irix.
7475 [Albert Chin-A-Young <china@thewrittenword.com>]
7477 *) Add configuration option to build on Linux on both big-endian and
7479 [Ralf Baechle <ralf@uni-koblenz.de>]
7481 *) Add the possibility to create shared libraries on HP-UX.
7484 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
7486 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
7487 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
7488 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
7489 PRNG state recovery was possible based on the output of
7490 one PRNG request appropriately sized to gain knowledge on
7491 'md' followed by enough consecutive 1-byte PRNG requests
7492 to traverse all of 'state'.
7494 1. When updating 'md_local' (the current thread's copy of 'md')
7495 during PRNG output generation, hash all of the previous
7496 'md_local' value, not just the half used for PRNG output.
7498 2. Make the number of bytes from 'state' included into the hash
7499 independent from the number of PRNG bytes requested.
7501 The first measure alone would be sufficient to avoid
7502 Markku-Juhani's attack. (Actually it had never occurred
7503 to me that the half of 'md_local' used for chaining was the
7504 half from which PRNG output bytes were taken -- I had always
7505 assumed that the secret half would be used.) The second
7506 measure makes sure that additional data from 'state' is never
7507 mixed into 'md_local' in small portions; this heuristically
7508 further strengthens the PRNG.
7511 *) Fix crypto/bn/asm/mips3.s.
7514 *) When only the key is given to "enc", the IV is undefined. Print out
7515 an error message in this case.
7518 *) Handle special case when X509_NAME is empty in X509 printing routines.
7521 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
7522 positive and less than q.
7525 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
7526 used: it isn't thread safe and the add_lock_callback should handle
7528 [Paul Rose <Paul.Rose@bridge.com>]
7530 *) Verify that incoming data obeys the block size in
7531 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
7535 [Ulf Möller, Bodo Möller]
7537 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
7538 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
7539 when fixing the server behaviour for backwards-compatible 'client
7540 hello' messages. (Note that the attack is impractical against
7541 SSL 3.0 and TLS 1.0 anyway because length and version checking
7542 means that the probability of guessing a valid ciphertext is
7543 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
7546 Before 0.9.5, the countermeasure (hide the error by generating a
7547 random 'decryption result') did not work properly because
7548 ERR_clear_error() was missing, meaning that SSL_get_error() would
7549 detect the supposedly ignored error.
7551 Both problems are now fixed.
7554 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
7555 (previously it was 1024).
7558 *) Fix for compatibility mode trust settings: ignore trust settings
7559 unless some valid trust or reject settings are present.
7562 *) Fix for blowfish EVP: its a variable length cipher.
7565 *) Fix various bugs related to DSA S/MIME verification. Handle missing
7566 parameters in DSA public key structures and return an error in the
7567 DSA routines if parameters are absent.
7570 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
7571 in the current directory if neither $RANDFILE nor $HOME was set.
7572 RAND_file_name() in 0.9.6a returned NULL in this case. This has
7573 caused some confusion to Windows users who haven't defined $HOME.
7574 Thus RAND_file_name() is changed again: e_os.h can define a
7575 DEFAULT_HOME, which will be used if $HOME is not set.
7576 For Windows, we use "C:"; on other platforms, we still require
7577 environment variables.
7579 *) Move 'if (!initialized) RAND_poll()' into regions protected by
7580 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
7581 having multiple threads call RAND_poll() concurrently.
7584 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
7585 combination of a flag and a thread ID variable.
7586 Otherwise while one thread is in ssleay_rand_bytes (which sets the
7587 flag), *other* threads can enter ssleay_add_bytes without obeying
7588 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
7589 that they do not hold after the first thread unsets add_do_not_lock).
7592 *) Change bctest again: '-x' expressions are not available in all
7596 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
7598 *) Fix a couple of memory leaks in PKCS7_dataDecode()
7599 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
7601 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
7602 the default extension for executables, if any. Also, make the perl
7603 scripts that use symlink() to test if it really exists and use "cp"
7604 if it doesn't. All this made OpenSSL compilable and installable in
7608 *) Fix for asn1_GetSequence() for indefinite length constructed data.
7609 If SEQUENCE is length is indefinite just set c->slen to the total
7610 amount of data available.
7611 [Steve Henson, reported by shige@FreeBSD.org]
7612 [This change does not apply to 0.9.7.]
7614 *) Change bctest to avoid here-documents inside command substitution
7615 (workaround for FreeBSD /bin/sh bug).
7616 For compatibility with Ultrix, avoid shell functions (introduced
7617 in the bctest version that searches along $PATH).
7620 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
7621 with des_encrypt() defined on some operating systems, like Solaris
7625 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
7626 On the Importance of Eliminating Errors in Cryptographic
7627 Computations, J. Cryptology 14 (2001) 2, 101-119,
7628 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
7631 *) MIPS assembler BIGNUM division bug fix.
7634 *) Disabled incorrect Alpha assembler code.
7637 *) Fix PKCS#7 decode routines so they correctly update the length
7638 after reading an EOC for the EXPLICIT tag.
7640 [This change does not apply to 0.9.7.]
7642 *) Fix bug in PKCS#12 key generation routines. This was triggered
7643 if a 3DES key was generated with a 0 initial byte. Include
7644 PKCS12_BROKEN_KEYGEN compilation option to retain the old
7645 (but broken) behaviour.
7648 *) Enhance bctest to search for a working bc along $PATH and print
7650 [Tim Rice <tim@multitalents.net> via Richard Levitte]
7652 *) Fix memory leaks in err.c: free err_data string if necessary;
7653 don't write to the wrong index in ERR_set_error_data.
7656 *) Implement ssl23_peek (analogous to ssl23_read), which previously
7660 *) Replace rdtsc with _emit statements for VC++ version 5.
7661 [Jeremy Cooper <jeremy@baymoo.org>]
7663 *) Make it possible to reuse SSLv2 sessions.
7666 *) In copy_email() check for >= 0 as a return value for
7667 X509_NAME_get_index_by_NID() since 0 is a valid index.
7668 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
7670 *) Avoid coredump with unsupported or invalid public keys by checking if
7671 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
7672 PKCS7_verify() fails with non detached data.
7675 *) Don't use getenv in library functions when run as setuid/setgid.
7676 New function OPENSSL_issetugid().
7679 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
7680 due to incorrect handling of multi-threading:
7682 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
7684 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
7686 3. Count how many times MemCheck_off() has been called so that
7687 nested use can be treated correctly. This also avoids
7688 inband-signalling in the previous code (which relied on the
7689 assumption that thread ID 0 is impossible).
7692 *) Add "-rand" option also to s_client and s_server.
7695 *) Fix CPU detection on Irix 6.x.
7696 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
7697 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
7699 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
7702 [This change does not apply to 0.9.7.]
7704 *) Use the cached encoding of an X509_NAME structure rather than
7705 copying it. This is apparently the reason for the libsafe "errors"
7706 but the code is actually correct.
7709 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
7710 Bleichenbacher's DSA attack.
7711 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
7712 to be set and top=0 forces the highest bit to be set; top=-1 is new
7713 and leaves the highest bit random.
7714 [Ulf Moeller, Bodo Moeller]
7716 *) In the NCONF_...-based implementations for CONF_... queries
7717 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
7718 a temporary CONF structure with the data component set to NULL
7719 (which gives segmentation faults in lh_retrieve).
7720 Instead, use NULL for the CONF pointer in CONF_get_string and
7721 CONF_get_number (which may use environment variables) and directly
7722 return NULL from CONF_get_section.
7725 *) Fix potential buffer overrun for EBCDIC.
7728 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
7729 keyUsage if basicConstraints absent for a CA.
7732 *) Make SMIME_write_PKCS7() write mail header values with a format that
7733 is more generally accepted (no spaces before the semicolon), since
7734 some programs can't parse those values properly otherwise. Also make
7735 sure BIO's that break lines after each write do not create invalid
7739 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
7740 macros previously used would not encode an empty SEQUENCE OF
7741 and break the signature.
7743 [This change does not apply to 0.9.7.]
7745 *) Zero the premaster secret after deriving the master secret in
7749 *) Add some EVP_add_digest_alias registrations (as found in
7750 OpenSSL_add_all_digests()) to SSL_library_init()
7751 aka OpenSSL_add_ssl_algorithms(). This provides improved
7752 compatibility with peers using X.509 certificates
7753 with unconventional AlgorithmIdentifier OIDs.
7756 *) Fix for Irix with NO_ASM.
7757 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
7759 *) ./config script fixes.
7760 [Ulf Moeller, Richard Levitte]
7762 *) Fix 'openssl passwd -1'.
7765 *) Change PKCS12_key_gen_asc() so it can cope with non null
7766 terminated strings whose length is passed in the passlen
7767 parameter, for example from PEM callbacks. This was done
7768 by adding an extra length parameter to asc2uni().
7769 [Steve Henson, reported by <oddissey@samsung.co.kr>]
7771 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
7772 call failed, free the DSA structure.
7775 *) Fix to uni2asc() to cope with zero length Unicode strings.
7776 These are present in some PKCS#12 files.
7779 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
7780 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
7781 when writing a 32767 byte record.
7782 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
7784 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
7785 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
7787 (RSA objects have a reference count access to which is protected
7788 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
7789 so they are meant to be shared between threads.)
7790 [Bodo Moeller, Geoff Thorpe; original patch submitted by
7791 "Reddie, Steven" <Steven.Reddie@ca.com>]
7793 *) Fix a deadlock in CRYPTO_mem_leaks().
7796 *) Use better test patterns in bntest.
7799 *) rand_win.c fix for Borland C.
7802 *) BN_rshift bugfix for n == 0.
7805 *) Add a 'bctest' script that checks for some known 'bc' bugs
7806 so that 'make test' does not abort just because 'bc' is broken.
7809 *) Store verify_result within SSL_SESSION also for client side to
7810 avoid potential security hole. (Re-used sessions on the client side
7811 always resulted in verify_result==X509_V_OK, not using the original
7812 result of the server certificate verification.)
7815 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
7816 SSL3_RT_APPLICATION_DATA, return 0.
7817 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
7821 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
7822 releases, have been re-implemented by renaming the previous
7823 implementations of ssl2_read and ssl3_read to ssl2_read_internal
7824 and ssl3_read_internal, respectively, and adding 'peek' parameters
7825 to them. The new ssl[23]_{read,peek} functions are calls to
7826 ssl[23]_read_internal with the 'peek' flag set appropriately.
7827 A 'peek' parameter has also been added to ssl3_read_bytes, which
7828 does the actual work for ssl3_read_internal.
7831 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
7832 the method-specific "init()" handler. Also clean up ex_data after
7833 calling the method-specific "finish()" handler. Previously, this was
7834 happening the other way round.
7837 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
7838 The previous value, 12, was not always sufficient for BN_mod_exp().
7841 *) Make sure that shared libraries get the internal name engine with
7842 the full version number and not just 0. This should mark the
7843 shared libraries as not backward compatible. Of course, this should
7844 be changed again when we can guarantee backward binary compatibility.
7847 *) Fix typo in get_cert_by_subject() in by_dir.c
7848 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
7850 *) Rework the system to generate shared libraries:
7852 - Make note of the expected extension for the shared libraries and
7853 if there is a need for symbolic links from for example libcrypto.so.0
7854 to libcrypto.so.0.9.7. There is extended info in Configure for
7857 - Make as few rebuilds of the shared libraries as possible.
7859 - Still avoid linking the OpenSSL programs with the shared libraries.
7861 - When installing, install the shared libraries separately from the
7865 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
7867 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
7868 and not in SSL_clear because the latter is also used by the
7869 accept/connect functions; previously, the settings made by
7870 SSL_set_read_ahead would be lost during the handshake.
7871 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
7873 *) Correct util/mkdef.pl to be selective about disabled algorithms.
7874 Previously, it would create entries for disabled algorithms no
7878 *) Added several new manual pages for SSL_* function.
7881 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
7883 *) In ssl23_get_client_hello, generate an error message when faced
7884 with an initial SSL 3.0/TLS record that is too small to contain the
7885 first two bytes of the ClientHello message, i.e. client_version.
7886 (Note that this is a pathologic case that probably has never happened
7887 in real life.) The previous approach was to use the version number
7888 from the record header as a substitute; but our protocol choice
7889 should not depend on that one because it is not authenticated
7890 by the Finished messages.
7893 *) More robust randomness gathering functions for Windows.
7894 [Jeffrey Altman <jaltman@columbia.edu>]
7896 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
7897 not set then we don't setup the error code for issuer check errors
7898 to avoid possibly overwriting other errors which the callback does
7899 handle. If an application does set the flag then we assume it knows
7900 what it is doing and can handle the new informational codes
7904 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
7905 a general "ANY" type, as such it should be able to decode anything
7906 including tagged types. However it didn't check the class so it would
7907 wrongly interpret tagged types in the same way as their universal
7908 counterpart and unknown types were just rejected. Changed so that the
7909 tagged and unknown types are handled in the same way as a SEQUENCE:
7910 that is the encoding is stored intact. There is also a new type
7911 "V_ASN1_OTHER" which is used when the class is not universal, in this
7912 case we have no idea what the actual type is so we just lump them all
7916 *) On VMS, stdout may very well lead to a file that is written to
7917 in a record-oriented fashion. That means that every write() will
7918 write a separate record, which will be read separately by the
7919 programs trying to read from it. This can be very confusing.
7921 The solution is to put a BIO filter in the way that will buffer
7922 text until a linefeed is reached, and then write everything a
7923 line at a time, so every record written will be an actual line,
7924 not chunks of lines and not (usually doesn't happen, but I've
7925 seen it once) several lines in one record. BIO_f_linebuffer() is
7928 Currently, it's a VMS-only method, because that's where it has
7929 been tested well enough.
7932 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
7933 it can return incorrect results.
7934 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
7935 but it was in 0.9.6-beta[12].)
7938 *) Disable the check for content being present when verifying detached
7939 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
7940 include zero length content when signing messages.
7943 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
7944 BIO_ctrl (for BIO pairs).
7947 *) Add DSO method for VMS.
7950 *) Bug fix: Montgomery multiplication could produce results with the
7954 *) Add RPM specification openssl.spec and modify it to build three
7955 packages. The default package contains applications, application
7956 documentation and run-time libraries. The devel package contains
7957 include files, static libraries and function documentation. The
7958 doc package contains the contents of the doc directory. The original
7959 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
7962 *) Add a large number of documentation files for many SSL routines.
7963 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
7965 *) Add a configuration entry for Sony News 4.
7966 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
7968 *) Don't set the two most significant bits to one when generating a
7969 random number < q in the DSA library.
7972 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
7973 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
7974 the underlying transport is blocking) if a handshake took place.
7975 (The default behaviour is needed by applications such as s_client
7976 and s_server that use select() to determine when to use SSL_read;
7977 but for applications that know in advance when to expect data, it
7978 just makes things more complicated.)
7981 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
7985 *) Add a few more EBCDIC conditionals that make `req' and `x509'
7986 work better on such systems.
7987 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
7989 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
7990 Update PKCS12_parse() so it copies the friendlyName and the
7991 keyid to the certificates aux info.
7994 *) Fix bug in PKCS7_verify() which caused an infinite loop
7995 if there was more than one signature.
7996 [Sven Uszpelkat <su@celocom.de>]
7998 *) Major change in util/mkdef.pl to include extra information
7999 about each symbol, as well as presenting variables as well
8000 as functions. This change means that there's n more need
8001 to rebuild the .num files when some algorithms are excluded.
8004 *) Allow the verify time to be set by an application,
8005 rather than always using the current time.
8008 *) Phase 2 verify code reorganisation. The certificate
8009 verify code now looks up an issuer certificate by a
8010 number of criteria: subject name, authority key id
8011 and key usage. It also verifies self signed certificates
8012 by the same criteria. The main comparison function is
8013 X509_check_issued() which performs these checks.
8015 Lot of changes were necessary in order to support this
8016 without completely rewriting the lookup code.
8018 Authority and subject key identifier are now cached.
8020 The LHASH 'certs' is X509_STORE has now been replaced
8021 by a STACK_OF(X509_OBJECT). This is mainly because an
8022 LHASH can't store or retrieve multiple objects with
8023 the same hash value.
8025 As a result various functions (which were all internal
8026 use only) have changed to handle the new X509_STORE
8027 structure. This will break anything that messed round
8028 with X509_STORE internally.
8030 The functions X509_STORE_add_cert() now checks for an
8031 exact match, rather than just subject name.
8033 The X509_STORE API doesn't directly support the retrieval
8034 of multiple certificates matching a given criteria, however
8035 this can be worked round by performing a lookup first
8036 (which will fill the cache with candidate certificates)
8037 and then examining the cache for matches. This is probably
8038 the best we can do without throwing out X509_LOOKUP
8039 entirely (maybe later...).
8041 The X509_VERIFY_CTX structure has been enhanced considerably.
8043 All certificate lookup operations now go via a get_issuer()
8044 callback. Although this currently uses an X509_STORE it
8045 can be replaced by custom lookups. This is a simple way
8046 to bypass the X509_STORE hackery necessary to make this
8047 work and makes it possible to use more efficient techniques
8048 in future. A very simple version which uses a simple
8049 STACK for its trusted certificate store is also provided
8050 using X509_STORE_CTX_trusted_stack().
8052 The verify_cb() and verify() callbacks now have equivalents
8053 in the X509_STORE_CTX structure.
8055 X509_STORE_CTX also has a 'flags' field which can be used
8056 to customise the verify behaviour.
8059 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
8060 excludes S/MIME capabilities.
8063 *) When a certificate request is read in keep a copy of the
8064 original encoding of the signed data and use it when outputing
8065 again. Signatures then use the original encoding rather than
8066 a decoded, encoded version which may cause problems if the
8067 request is improperly encoded.
8070 *) For consistency with other BIO_puts implementations, call
8071 buffer_write(b, ...) directly in buffer_puts instead of calling
8074 In BIO_puts, increment b->num_write as in BIO_write.
8075 [Peter.Sylvester@EdelWeb.fr]
8077 *) Fix BN_mul_word for the case where the word is 0. (We have to use
8078 BN_zero, we may not return a BIGNUM with an array consisting of
8082 *) Avoid calling abort() from within the library when problems are
8083 detected, except if preprocessor symbols have been defined
8084 (such as REF_CHECK, BN_DEBUG etc.).
8087 *) New openssl application 'rsautl'. This utility can be
8088 used for low level RSA operations. DER public key
8089 BIO/fp routines also added.
8092 *) New Configure entry and patches for compiling on QNX 4.
8093 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
8095 *) A demo state-machine implementation was sponsored by
8096 Nuron (http://www.nuron.com/) and is now available in
8097 demos/state_machine.
8100 *) New options added to the 'dgst' utility for signature
8101 generation and verification.
8104 *) Unrecognized PKCS#7 content types are now handled via a
8105 catch all ASN1_TYPE structure. This allows unsupported
8106 types to be stored as a "blob" and an application can
8107 encode and decode it manually.
8110 *) Fix various signed/unsigned issues to make a_strex.c
8112 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
8114 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
8115 length if passed a buffer. ASN1_INTEGER_to_BN failed
8116 if passed a NULL BN and its argument was negative.
8117 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
8119 *) Modification to PKCS#7 encoding routines to output definite
8120 length encoding. Since currently the whole structures are in
8121 memory there's not real point in using indefinite length
8122 constructed encoding. However if OpenSSL is compiled with
8123 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
8126 *) Added BIO_vprintf() and BIO_vsnprintf().
8129 *) Added more prefixes to parse for in the the strings written
8130 through a logging bio, to cover all the levels that are available
8131 through syslog. The prefixes are now:
8133 PANIC, EMERG, EMR => LOG_EMERG
8134 ALERT, ALR => LOG_ALERT
8135 CRIT, CRI => LOG_CRIT
8136 ERROR, ERR => LOG_ERR
8137 WARNING, WARN, WAR => LOG_WARNING
8138 NOTICE, NOTE, NOT => LOG_NOTICE
8139 INFO, INF => LOG_INFO
8140 DEBUG, DBG => LOG_DEBUG
8142 and as before, if none of those prefixes are present at the
8143 beginning of the string, LOG_ERR is chosen.
8145 On Win32, the LOG_* levels are mapped according to this:
8147 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
8148 LOG_WARNING => EVENTLOG_WARNING_TYPE
8149 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
8153 *) Made it possible to reconfigure with just the configuration
8154 argument "reconf" or "reconfigure". The command line arguments
8155 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
8156 and are retrieved from there when reconfiguring.
8160 [Assar Westerlund <assar@sics.se>, Richard Levitte]
8162 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
8165 *) The obj_dat.pl script was messing up the sorting of object
8166 names. The reason was that it compared the quoted version
8167 of strings as a result "OCSP" > "OCSP Signing" because
8168 " > SPACE. Changed script to store unquoted versions of
8169 names and add quotes on output. It was also omitting some
8170 names from the lookup table if they were given a default
8171 value (that is if SN is missing it is given the same
8172 value as LN and vice versa), these are now added on the
8173 grounds that if an object has a name we should be able to
8174 look it up. Finally added warning output when duplicate
8175 short or long names are found.
8178 *) Changes needed for Tandem NSK.
8179 [Scott Uroff <scott@xypro.com>]
8181 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
8182 RSA_padding_check_SSLv23(), special padding was never detected
8183 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
8184 version rollback attacks was not effective.
8186 In s23_clnt.c, don't use special rollback-attack detection padding
8187 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
8188 client; similarly, in s23_srvr.c, don't do the rollback check if
8189 SSL 2.0 is the only protocol enabled in the server.
8192 *) Make it possible to get hexdumps of unprintable data with 'openssl
8193 asn1parse'. By implication, the functions ASN1_parse_dump() and
8194 BIO_dump_indent() are added.
8197 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
8198 these print out strings and name structures based on various
8199 flags including RFC2253 support and proper handling of
8200 multibyte characters. Added options to the 'x509' utility
8201 to allow the various flags to be set.
8204 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
8205 Also change the functions X509_cmp_current_time() and
8206 X509_gmtime_adj() work with an ASN1_TIME structure,
8207 this will enable certificates using GeneralizedTime in validity
8208 dates to be checked.
8211 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
8212 negative public key encodings) on by default,
8213 NO_NEG_PUBKEY_BUG can be set to disable it.
8216 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
8217 content octets. An i2c_ASN1_OBJECT is unnecessary because
8218 the encoding can be trivially obtained from the structure.
8221 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
8222 not read locks (CRYPTO_r_[un]lock).
8225 *) A first attempt at creating official support for shared
8226 libraries through configuration. I've kept it so the
8227 default is static libraries only, and the OpenSSL programs
8228 are always statically linked for now, but there are
8229 preparations for dynamic linking in place.
8230 This has been tested on Linux and Tru64.
8233 *) Randomness polling function for Win9x, as described in:
8234 Peter Gutmann, Software Generation of Practically Strong
8238 *) Fix so PRNG is seeded in req if using an already existing
8242 *) New options to smime application. -inform and -outform
8243 allow alternative formats for the S/MIME message including
8244 PEM and DER. The -content option allows the content to be
8245 specified separately. This should allow things like Netscape
8246 form signing output easier to verify.
8249 *) Fix the ASN1 encoding of tags using the 'long form'.
8252 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
8253 STRING types. These convert content octets to and from the
8254 underlying type. The actual tag and length octets are
8255 already assumed to have been read in and checked. These
8256 are needed because all other string types have virtually
8257 identical handling apart from the tag. By having versions
8258 of the ASN1 functions that just operate on content octets
8259 IMPLICIT tagging can be handled properly. It also allows
8260 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
8261 and ASN1_INTEGER are identical apart from the tag.
8264 *) Change the handling of OID objects as follows:
8266 - New object identifiers are inserted in objects.txt, following
8267 the syntax given in objects.README.
8268 - objects.pl is used to process obj_mac.num and create a new
8270 - obj_dat.pl is used to create a new obj_dat.h, using the data in
8273 This is currently kind of a hack, and the perl code in objects.pl
8274 isn't very elegant, but it works as I intended. The simplest way
8275 to check that it worked correctly is to look in obj_dat.h and
8276 check the array nid_objs and make sure the objects haven't moved
8277 around (this is important!). Additions are OK, as well as
8278 consistent name changes.
8281 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
8284 *) Addition of the command line parameter '-rand file' to 'openssl req'.
8285 The given file adds to whatever has already been seeded into the
8286 random pool through the RANDFILE configuration file option or
8287 environment variable, or the default random state file.
8290 *) mkstack.pl now sorts each macro group into lexical order.
8291 Previously the output order depended on the order the files
8292 appeared in the directory, resulting in needless rewriting
8296 *) Patches to make OpenSSL compile under Win32 again. Mostly
8297 work arounds for the VC++ problem that it treats func() as
8298 func(void). Also stripped out the parts of mkdef.pl that
8299 added extra typesafe functions: these no longer exist.
8302 *) Reorganisation of the stack code. The macros are now all
8303 collected in safestack.h . Each macro is defined in terms of
8304 a "stack macro" of the form SKM_<name>(type, a, b). The
8305 DEBUG_SAFESTACK is now handled in terms of function casts,
8306 this has the advantage of retaining type safety without the
8307 use of additional functions. If DEBUG_SAFESTACK is not defined
8308 then the non typesafe macros are used instead. Also modified the
8309 mkstack.pl script to handle the new form. Needs testing to see
8310 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
8311 the default if no major problems. Similar behaviour for ASN1_SET_OF
8312 and PKCS12_STACK_OF.
8315 *) When some versions of IIS use the 'NET' form of private key the
8316 key derivation algorithm is different. Normally MD5(password) is
8317 used as a 128 bit RC4 key. In the modified case
8318 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
8319 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
8320 as the old Netscape_RSA functions except they have an additional
8321 'sgckey' parameter which uses the modified algorithm. Also added
8322 an -sgckey command line option to the rsa utility. Thanks to
8323 Adrian Peck <bertie@ncipher.com> for posting details of the modified
8324 algorithm to openssl-dev.
8327 *) The evp_local.h macros were using 'c.##kname' which resulted in
8328 invalid expansion on some systems (SCO 5.0.5 for example).
8329 Corrected to 'c.kname'.
8330 [Phillip Porch <root@theporch.com>]
8332 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
8333 a STACK of email addresses from a certificate or request, these look
8334 in the subject name and the subject alternative name extensions and
8335 omit any duplicate addresses.
8338 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
8339 This makes DSA verification about 2 % faster.
8342 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
8343 (meaning that now 2^5 values will be precomputed, which is only 4 KB
8344 plus overhead for 1024 bit moduli).
8345 This makes exponentiations about 0.5 % faster for 1024 bit
8346 exponents (as measured by "openssl speed rsa2048").
8349 *) Rename memory handling macros to avoid conflicts with other
8351 Malloc => OPENSSL_malloc
8352 Malloc_locked => OPENSSL_malloc_locked
8353 Realloc => OPENSSL_realloc
8354 Free => OPENSSL_free
8357 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
8358 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
8361 *) CygWin32 support.
8362 [John Jarvie <jjarvie@newsguy.com>]
8364 *) The type-safe stack code has been rejigged. It is now only compiled
8365 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
8366 by default all type-specific stack functions are "#define"d back to
8367 standard stack functions. This results in more streamlined output
8368 but retains the type-safety checking possibilities of the original
8372 *) The STACK code has been cleaned up, and certain type declarations
8373 that didn't make a lot of sense have been brought in line. This has
8374 also involved a cleanup of sorts in safestack.h to more correctly
8375 map type-safe stack functions onto their plain stack counterparts.
8376 This work has also resulted in a variety of "const"ifications of
8377 lots of the code, especially "_cmp" operations which should normally
8378 be prototyped with "const" parameters anyway.
8381 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
8382 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
8383 (The PRNG state consists of two parts, the large pool 'state' and 'md',
8384 where all of 'md' is used each time the PRNG is used, but 'state'
8385 is used only indexed by a cyclic counter. As entropy may not be
8386 well distributed from the beginning, 'md' is important as a
8387 chaining variable. However, the output function chains only half
8388 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
8389 all of 'md', and seeding with STATE_SIZE dummy bytes will result
8390 in all of 'state' being rewritten, with the new values depending
8391 on virtually all of 'md'. This overcomes the 80 bit limitation.)
8394 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
8395 the handshake is continued after ssl_verify_cert_chain();
8396 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
8397 can lead to 'unexplainable' connection aborts later.
8398 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
8400 *) Major EVP API cipher revision.
8401 Add hooks for extra EVP features. This allows various cipher
8402 parameters to be set in the EVP interface. Support added for variable
8403 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
8404 setting of RC2 and RC5 parameters.
8406 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
8409 Remove lots of duplicated code from the EVP library. For example *every*
8410 cipher init() function handles the 'iv' in the same way according to the
8411 cipher mode. They also all do nothing if the 'key' parameter is NULL and
8412 for CFB and OFB modes they zero ctx->num.
8414 New functionality allows removal of S/MIME code RC2 hack.
8416 Most of the routines have the same form and so can be declared in terms
8419 By shifting this to the top level EVP_CipherInit() it can be removed from
8420 all individual ciphers. If the cipher wants to handle IVs or keys
8421 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
8424 Change lots of functions like EVP_EncryptUpdate() to now return a
8425 value: although software versions of the algorithms cannot fail
8426 any installed hardware versions can.
8429 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
8430 this option is set, tolerate broken clients that send the negotiated
8431 protocol version number instead of the requested protocol version
8435 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
8436 i.e. non-zero for export ciphersuites, zero otherwise.
8437 Previous versions had this flag inverted, inconsistent with
8438 rsa_tmp_cb (..._TMP_RSA_CB).
8439 [Bodo Moeller; problem reported by Amit Chopra]
8441 *) Add missing DSA library text string. Work around for some IIS
8442 key files with invalid SEQUENCE encoding.
8445 *) Add a document (doc/standards.txt) that list all kinds of standards
8446 and so on that are implemented in OpenSSL.
8449 *) Enhance c_rehash script. Old version would mishandle certificates
8450 with the same subject name hash and wouldn't handle CRLs at all.
8451 Added -fingerprint option to crl utility, to support new c_rehash
8455 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
8458 *) Fix for SSL server purpose checking. Server checking was
8459 rejecting certificates which had extended key usage present
8460 but no ssl client purpose.
8461 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
8463 *) Make PKCS#12 code work with no password. The PKCS#12 spec
8464 is a little unclear about how a blank password is handled.
8465 Since the password in encoded as a BMPString with terminating
8466 double NULL a zero length password would end up as just the
8467 double NULL. However no password at all is different and is
8468 handled differently in the PKCS#12 key generation code. NS
8469 treats a blank password as zero length. MSIE treats it as no
8470 password on export: but it will try both on import. We now do
8471 the same: PKCS12_parse() tries zero length and no password if
8472 the password is set to "" or NULL (NULL is now a valid password:
8473 it wasn't before) as does the pkcs12 application.
8476 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
8477 perror when PEM_read_bio_X509_REQ fails, the error message must
8478 be obtained from the error queue.
8481 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
8482 it in ERR_remove_state if appropriate, and change ERR_get_state
8483 accordingly to avoid race conditions (this is necessary because
8484 thread_hash is no longer constant once set).
8487 *) Bugfix for linux-elf makefile.one.
8490 *) RSA_get_default_method() will now cause a default
8491 RSA_METHOD to be chosen if one doesn't exist already.
8492 Previously this was only set during a call to RSA_new()
8493 or RSA_new_method(NULL) meaning it was possible for
8494 RSA_get_default_method() to return NULL.
8497 *) Added native name translation to the existing DSO code
8498 that will convert (if the flag to do so is set) filenames
8499 that are sufficiently small and have no path information
8500 into a canonical native form. Eg. "blah" converted to
8501 "libblah.so" or "blah.dll" etc.
8504 *) New function ERR_error_string_n(e, buf, len) which is like
8505 ERR_error_string(e, buf), but writes at most 'len' bytes
8506 including the 0 terminator. For ERR_error_string_n, 'buf'
8508 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
8510 *) CONF library reworked to become more general. A new CONF
8511 configuration file reader "class" is implemented as well as a
8512 new functions (NCONF_*, for "New CONF") to handle it. The now
8513 old CONF_* functions are still there, but are reimplemented to
8514 work in terms of the new functions. Also, a set of functions
8515 to handle the internal storage of the configuration data is
8516 provided to make it easier to write new configuration file
8517 reader "classes" (I can definitely see something reading a
8518 configuration file in XML format, for example), called _CONF_*,
8519 or "the configuration storage API"...
8521 The new configuration file reading functions are:
8523 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
8524 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
8526 NCONF_default, NCONF_WIN32
8528 NCONF_dump_fp, NCONF_dump_bio
8530 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
8531 NCONF_new creates a new CONF object. This works in the same way
8532 as other interfaces in OpenSSL, like the BIO interface.
8533 NCONF_dump_* dump the internal storage of the configuration file,
8534 which is useful for debugging. All other functions take the same
8535 arguments as the old CONF_* functions wth the exception of the
8536 first that must be a `CONF *' instead of a `LHASH *'.
8538 To make it easer to use the new classes with the old CONF_* functions,
8539 the function CONF_set_default_method is provided.
8542 *) Add '-tls1' option to 'openssl ciphers', which was already
8543 mentioned in the documentation but had not been implemented.
8544 (This option is not yet really useful because even the additional
8545 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
8548 *) Initial DSO code added into libcrypto for letting OpenSSL (and
8549 OpenSSL-based applications) load shared libraries and bind to
8550 them in a portable way.
8551 [Geoff Thorpe, with contributions from Richard Levitte]
8553 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
8555 *) Make sure _lrotl and _lrotr are only used with MSVC.
8557 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
8558 (the default implementation of RAND_status).
8560 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
8561 to '-clrext' (= clear extensions), as intended and documented.
8562 [Bodo Moeller; inconsistency pointed out by Michael Attili
8565 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
8566 was larger than the MD block size.
8567 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
8569 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
8570 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
8571 using the passed key: if the passed key was a private key the result
8572 of X509_print(), for example, would be to print out all the private key
8576 *) des_quad_cksum() byte order bug fix.
8577 [Ulf Möller, using the problem description in krb4-0.9.7, where
8578 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
8580 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
8582 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
8584 *) For easily testing in shell scripts whether some command
8585 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
8586 returns with exit code 0 iff no command of the given name is available.
8587 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
8588 the output goes to stdout and nothing is printed to stderr.
8589 Additional arguments are always ignored.
8591 Since for each cipher there is a command of the same name,
8592 the 'no-cipher' compilation switches can be tested this way.
8594 ('openssl no-XXX' is not able to detect pseudo-commands such
8595 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
8598 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
8601 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
8602 is set; it will be thrown away anyway because each handshake creates
8604 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
8605 to parameters -- in previous versions (since OpenSSL 0.9.3) the
8606 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
8607 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
8610 *) New s_client option -ign_eof: EOF at stdin is ignored, and
8611 'Q' and 'R' lose their special meanings (quit/renegotiate).
8612 This is part of what -quiet does; unlike -quiet, -ign_eof
8613 does not suppress any output.
8616 *) Add compatibility options to the purpose and trust code. The
8617 purpose X509_PURPOSE_ANY is "any purpose" which automatically
8618 accepts a certificate or CA, this was the previous behaviour,
8619 with all the associated security issues.
8621 X509_TRUST_COMPAT is the old trust behaviour: only and
8622 automatically trust self signed roots in certificate store. A
8623 new trust setting X509_TRUST_DEFAULT is used to specify that
8624 a purpose has no associated trust setting and it should instead
8625 use the value in the default purpose.
8628 *) Fix the PKCS#8 DSA private key code so it decodes keys again
8629 and fix a memory leak.
8632 *) In util/mkerr.pl (which implements 'make errors'), preserve
8633 reason strings from the previous version of the .c file, as
8634 the default to have only downcase letters (and digits) in
8635 automatically generated reasons codes is not always appropriate.
8638 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
8639 using strerror. Previously, ERR_reason_error_string() returned
8640 library names as reason strings for SYSerr; but SYSerr is a special
8641 case where small numbers are errno values, not library numbers.
8644 *) Add '-dsaparam' option to 'openssl dhparam' application. This
8645 converts DSA parameters into DH parameters. (When creating parameters,
8646 DSA_generate_parameters is used.)
8649 *) Include 'length' (recommended exponent length) in C code generated
8650 by 'openssl dhparam -C'.
8653 *) The second argument to set_label in perlasm was already being used
8654 so couldn't be used as a "file scope" flag. Moved to third argument
8658 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
8659 instead of RAND_bytes for encryption IVs and salts.
8662 *) Include RAND_status() into RAND_METHOD instead of implementing
8663 it only for md_rand.c Otherwise replacing the PRNG by calling
8664 RAND_set_rand_method would be impossible.
8667 *) Don't let DSA_generate_key() enter an infinite loop if the random
8668 number generation fails.
8671 *) New 'rand' application for creating pseudo-random output.
8674 *) Added configuration support for Linux/IA64
8675 [Rolf Haberrecker <rolf@suse.de>]
8677 *) Assembler module support for Mingw32.
8680 *) Shared library support for HPUX (in shlib/).
8681 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
8683 *) Shared library support for Solaris gcc.
8684 [Lutz Behnke <behnke@trustcenter.de>]
8686 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
8688 *) PKCS7_encrypt() was adding text MIME headers twice because they
8689 were added manually and by SMIME_crlf_copy().
8692 *) In bntest.c don't call BN_rand with zero bits argument.
8693 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
8695 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
8696 case was implemented. This caused BN_div_recp() to fail occasionally.
8699 *) Add an optional second argument to the set_label() in the perl
8700 assembly language builder. If this argument exists and is set
8701 to 1 it signals that the assembler should use a symbol whose
8702 scope is the entire file, not just the current function. This
8703 is needed with MASM which uses the format label:: for this scope.
8704 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
8706 *) Change the ASN1 types so they are typedefs by default. Before
8707 almost all types were #define'd to ASN1_STRING which was causing
8708 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
8712 *) Change names of new functions to the new get1/get0 naming
8713 convention: After 'get1', the caller owns a reference count
8714 and has to call ..._free; 'get0' returns a pointer to some
8715 data structure without incrementing reference counters.
8716 (Some of the existing 'get' functions increment a reference
8717 counter, some don't.)
8718 Similarly, 'set1' and 'add1' functions increase reference
8719 counters or duplicate objects.
8722 *) Allow for the possibility of temp RSA key generation failure:
8723 the code used to assume it always worked and crashed on failure.
8726 *) Fix potential buffer overrun problem in BIO_printf().
8727 [Ulf Möller, using public domain code by Patrick Powell; problem
8728 pointed out by David Sacerdote <das33@cornell.edu>]
8730 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
8731 RAND_egd() and RAND_status(). In the command line application,
8732 the EGD socket can be specified like a seed file using RANDFILE
8736 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
8737 Some CAs (e.g. Verisign) distribute certificates in this form.
8740 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
8741 list to exclude them. This means that no special compilation option
8742 is needed to use anonymous DH: it just needs to be included in the
8746 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
8747 EVP_MD_type. The old functionality is available in a new macro called
8748 EVP_MD_md(). Change code that uses it and update docs.
8751 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
8752 where the 'void *' argument is replaced by a function pointer argument.
8753 Previously 'void *' was abused to point to functions, which works on
8754 many platforms, but is not correct. As these functions are usually
8755 called by macros defined in OpenSSL header files, most source code
8756 should work without changes.
8759 *) <openssl/opensslconf.h> (which is created by Configure) now contains
8760 sections with information on -D... compiler switches used for
8761 compiling the library so that applications can see them. To enable
8762 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
8763 must be defined. E.g.,
8764 #define OPENSSL_ALGORITHM_DEFINES
8765 #include <openssl/opensslconf.h>
8766 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
8767 [Richard Levitte, Ulf and Bodo Möller]
8769 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
8773 *) Change the 'other' type in certificate aux info to a STACK_OF
8774 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
8775 the required ASN1 format: arbitrary types determined by an OID.
8778 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
8779 argument to 'req'. This is not because the function is newer or
8780 better than others it just uses the work 'NEW' in the certificate
8781 request header lines. Some software needs this.
8784 *) Reorganise password command line arguments: now passwords can be
8785 obtained from various sources. Delete the PEM_cb function and make
8786 it the default behaviour: i.e. if the callback is NULL and the
8787 usrdata argument is not NULL interpret it as a null terminated pass
8788 phrase. If usrdata and the callback are NULL then the pass phrase
8789 is prompted for as usual.
8792 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
8793 the support is automatically enabled. The resulting binaries will
8794 autodetect the card and use it if present.
8795 [Ben Laurie and Compaq Inc.]
8797 *) Work around for Netscape hang bug. This sends certificate request
8798 and server done in one record. Since this is perfectly legal in the
8799 SSL/TLS protocol it isn't a "bug" option and is on by default. See
8800 the bugs/SSLv3 entry for more info.
8803 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
8806 *) Add -rand argument to smime and pkcs12 applications and read/write
8810 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
8813 *) Add command line password options to the remaining applications.
8816 *) Bug fix for BN_div_recp() for numerators with an even number of
8820 *) More tests in bntest.c, and changed test_bn output.
8823 *) ./config recognizes MacOS X now.
8826 *) Bug fix for BN_div() when the first words of num and divsor are
8827 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
8830 *) Add support for various broken PKCS#8 formats, and command line
8831 options to produce them.
8834 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
8835 get temporary BIGNUMs from a BN_CTX.
8838 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
8842 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
8843 include a #define from the old name to the new. The original intent
8844 was that statically linked binaries could for example just call
8845 SSLeay_add_all_ciphers() to just add ciphers to the table and not
8846 link with digests. This never worked because SSLeay_add_all_digests()
8847 and SSLeay_add_all_ciphers() were in the same source file so calling
8848 one would link with the other. They are now in separate source files.
8851 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
8854 *) Use a less unusual form of the Miller-Rabin primality test (it used
8855 a binary algorithm for exponentiation integrated into the Miller-Rabin
8856 loop, our standard modexp algorithms are faster).
8859 *) Support for the EBCDIC character set completed.
8860 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
8862 *) Source code cleanups: use const where appropriate, eliminate casts,
8863 use void * instead of char * in lhash.
8866 *) Bugfix: ssl3_send_server_key_exchange was not restartable
8867 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
8868 this the server could overwrite ephemeral keys that the client
8872 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
8873 using 50 iterations of the Rabin-Miller test.
8875 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
8876 iterations of the Rabin-Miller test as required by the appendix
8877 to FIPS PUB 186[-1]) instead of DSA_is_prime.
8878 As BN_is_prime_fasttest includes trial division, DSA parameter
8879 generation becomes much faster.
8881 This implies a change for the callback functions in DSA_is_prime
8882 and DSA_generate_parameters: The callback function is called once
8883 for each positive witness in the Rabin-Miller test, not just
8884 occasionally in the inner loop; and the parameters to the
8885 callback function now provide an iteration count for the outer
8886 loop rather than for the current invocation of the inner loop.
8887 DSA_generate_parameters additionally can call the callback
8888 function with an 'iteration count' of -1, meaning that a
8889 candidate has passed the trial division test (when q is generated
8890 from an application-provided seed, trial division is skipped).
8893 *) New function BN_is_prime_fasttest that optionally does trial
8894 division before starting the Rabin-Miller test and has
8895 an additional BN_CTX * argument (whereas BN_is_prime always
8896 has to allocate at least one BN_CTX).
8897 'callback(1, -1, cb_arg)' is called when a number has passed the
8898 trial division stage.
8901 *) Fix for bug in CRL encoding. The validity dates weren't being handled
8905 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
8908 *) New function BN_pseudo_rand().
8911 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
8912 bignum version of BN_from_montgomery() with the working code from
8913 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
8917 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
8918 made it impossible to use the same SSL_SESSION data structure in
8919 SSL2 clients in multiple threads.
8922 *) The return value of RAND_load_file() no longer counts bytes obtained
8923 by stat(). RAND_load_file(..., -1) is new and uses the complete file
8924 to seed the PRNG (previously an explicit byte count was required).
8925 [Ulf Möller, Bodo Möller]
8927 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
8928 used (char *) instead of (void *) and had casts all over the place.
8931 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
8934 *) Retain source code compatibility for BN_prime_checks macro:
8935 BN_is_prime(..., BN_prime_checks, ...) now uses
8936 BN_prime_checks_for_size to determine the appropriate number of
8937 Rabin-Miller iterations.
8940 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
8941 DH_CHECK_P_NOT_SAFE_PRIME.
8942 (Check if this is true? OpenPGP calls them "strong".)
8945 *) Merge the functionality of "dh" and "gendh" programs into a new program
8946 "dhparam". The old programs are retained for now but will handle DH keys
8947 (instead of parameters) in future.
8950 *) Make the ciphers, s_server and s_client programs check the return values
8951 when a new cipher list is set.
8954 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
8955 ciphers. Before when the 56bit ciphers were enabled the sorting was
8958 The syntax for the cipher sorting has been extended to support sorting by
8959 cipher-strength (using the strength_bits hard coded in the tables).
8960 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
8962 Fix a bug in the cipher-command parser: when supplying a cipher command
8963 string with an "undefined" symbol (neither command nor alphanumeric
8964 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
8965 an error is flagged.
8967 Due to the strength-sorting extension, the code of the
8968 ssl_create_cipher_list() function was completely rearranged. I hope that
8969 the readability was also increased :-)
8970 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
8972 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
8973 for the first serial number and places 2 in the serial number file. This
8974 avoids problems when the root CA is created with serial number zero and
8975 the first user certificate has the same issuer name and serial number
8979 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
8980 the new code. Add documentation for this stuff.
8983 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
8984 X509_*() to X509at_*() on the grounds that they don't handle X509
8985 structures and behave in an analogous way to the X509v3 functions:
8986 they shouldn't be called directly but wrapper functions should be used
8989 So we also now have some wrapper functions that call the X509at functions
8990 when passed certificate requests. (TO DO: similar things can be done with
8991 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
8992 things. Some of these need some d2i or i2d and print functionality
8993 because they handle more complex structures.)
8996 *) Add missing #ifndefs that caused missing symbols when building libssl
8997 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
8998 NO_RSA in ssl/s2*.c.
8999 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
9001 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
9002 has a return value which indicates the quality of the random data
9003 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
9004 error queue. New function RAND_pseudo_bytes() generates output that is
9005 guaranteed to be unique but not unpredictable. RAND_add is like
9006 RAND_seed, but takes an extra argument for an entropy estimate
9007 (RAND_seed always assumes full entropy).
9010 *) Do more iterations of Rabin-Miller probable prime test (specifically,
9011 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
9012 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
9013 in crypto/bn/bn_prime.c for the complete table). This guarantees a
9014 false-positive rate of at most 2^-80 for random input.
9017 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
9020 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
9021 in the 0.9.5 release), this returns the chain
9022 from an X509_CTX structure with a dup of the stack and all
9023 the X509 reference counts upped: so the stack will exist
9024 after X509_CTX_cleanup() has been called. Modify pkcs12.c
9027 Also make SSL_SESSION_print() print out the verify return
9031 *) Add manpage for the pkcs12 command. Also change the default
9032 behaviour so MAC iteration counts are used unless the new
9033 -nomaciter option is used. This improves file security and
9034 only older versions of MSIE (4.0 for example) need it.
9037 *) Honor the no-xxx Configure options when creating .DEF files.
9040 *) Add PKCS#10 attributes to field table: challengePassword,
9041 unstructuredName and unstructuredAddress. These are taken from
9042 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
9043 international characters are used.
9045 More changes to X509_ATTRIBUTE code: allow the setting of types
9046 based on strings. Remove the 'loc' parameter when adding
9047 attributes because these will be a SET OF encoding which is sorted
9051 *) Initial changes to the 'req' utility to allow request generation
9052 automation. This will allow an application to just generate a template
9053 file containing all the field values and have req construct the
9056 Initial support for X509_ATTRIBUTE handling. Stacks of these are
9057 used all over the place including certificate requests and PKCS#7
9058 structures. They are currently handled manually where necessary with
9059 some primitive wrappers for PKCS#7. The new functions behave in a
9060 manner analogous to the X509 extension functions: they allow
9061 attributes to be looked up by NID and added.
9063 Later something similar to the X509V3 code would be desirable to
9064 automatically handle the encoding, decoding and printing of the
9065 more complex types. The string types like challengePassword can
9066 be handled by the string table functions.
9068 Also modified the multi byte string table handling. Now there is
9069 a 'global mask' which masks out certain types. The table itself
9070 can use the flag STABLE_NO_MASK to ignore the mask setting: this
9071 is useful when for example there is only one permissible type
9072 (as in countryName) and using the mask might result in no valid
9076 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
9077 SSL_get_peer_finished to allow applications to obtain the latest
9078 Finished messages sent to the peer or expected from the peer,
9079 respectively. (SSL_get_peer_finished is usually the Finished message
9080 actually received from the peer, otherwise the protocol will be aborted.)
9082 As the Finished message are message digests of the complete handshake
9083 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
9084 be used for external authentication procedures when the authentication
9085 provided by SSL/TLS is not desired or is not enough.
9088 *) Enhanced support for Alpha Linux is added. Now ./config checks if
9089 the host supports BWX extension and if Compaq C is present on the
9090 $PATH. Just exploiting of the BWX extension results in 20-30%
9091 performance kick for some algorithms, e.g. DES and RC4 to mention
9092 a couple. Compaq C in turn generates ~20% faster code for MD5 and
9096 *) Add support for MS "fast SGC". This is arguably a violation of the
9097 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
9098 weak crypto and after checking the certificate is SGC a second one
9099 with strong crypto. MS SGC stops the first handshake after receiving
9100 the server certificate message and sends a second client hello. Since
9101 a server will typically do all the time consuming operations before
9102 expecting any further messages from the client (server key exchange
9103 is the most expensive) there is little difference between the two.
9105 To get OpenSSL to support MS SGC we have to permit a second client
9106 hello message after we have sent server done. In addition we have to
9107 reset the MAC if we do get this second client hello.
9110 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
9111 if a DER encoded private key is RSA or DSA traditional format. Changed
9112 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
9113 format DER encoded private key. Newer code should use PKCS#8 format which
9114 has the key type encoded in the ASN1 structure. Added DER private key
9115 support to pkcs8 application.
9118 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
9119 ciphersuites has been selected (as required by the SSL 3/TLS 1
9120 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
9121 is set, we interpret this as a request to violate the specification
9122 (the worst that can happen is a handshake failure, and 'correct'
9123 behaviour would result in a handshake failure anyway).
9126 *) In SSL_CTX_add_session, take into account that there might be multiple
9127 SSL_SESSION structures with the same session ID (e.g. when two threads
9128 concurrently obtain them from an external cache).
9129 The internal cache can handle only one SSL_SESSION with a given ID,
9130 so if there's a conflict, we now throw out the old one to achieve
9134 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
9135 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
9136 some routines that use cipher OIDs: some ciphers do not have OIDs
9137 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
9141 *) Simplify the trust setting structure and code. Now we just have
9142 two sequences of OIDs for trusted and rejected settings. These will
9143 typically have values the same as the extended key usage extension
9144 and any application specific purposes.
9146 The trust checking code now has a default behaviour: it will just
9147 check for an object with the same NID as the passed id. Functions can
9148 be provided to override either the default behaviour or the behaviour
9149 for a given id. SSL client, server and email already have functions
9150 in place for compatibility: they check the NID and also return "trusted"
9151 if the certificate is self signed.
9154 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
9155 traditional format into an EVP_PKEY structure.
9158 *) Add a password callback function PEM_cb() which either prompts for
9159 a password if usr_data is NULL or otherwise assumes it is a null
9160 terminated password. Allow passwords to be passed on command line
9161 environment or config files in a few more utilities.
9164 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
9165 keys. Add some short names for PKCS#8 PBE algorithms and allow them
9166 to be specified on the command line for the pkcs8 and pkcs12 utilities.
9167 Update documentation.
9170 *) Support for ASN1 "NULL" type. This could be handled before by using
9171 ASN1_TYPE but there wasn't any function that would try to read a NULL
9172 and produce an error if it couldn't. For compatibility we also have
9173 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
9174 don't allocate anything because they don't need to.
9177 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
9179 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
9181 *) Rebuild of the memory allocation routines used by OpenSSL code and
9182 possibly others as well. The purpose is to make an interface that
9183 provide hooks so anyone can build a separate set of allocation and
9184 deallocation routines to be used by OpenSSL, for example memory
9185 pool implementations, or something else, which was previously hard
9186 since Malloc(), Realloc() and Free() were defined as macros having
9187 the values malloc, realloc and free, respectively (except for Win32
9188 compilations). The same is provided for memory debugging code.
9189 OpenSSL already comes with functionality to find memory leaks, but
9190 this gives people a chance to debug other memory problems.
9192 With these changes, a new set of functions and macros have appeared:
9194 CRYPTO_set_mem_debug_functions() [F]
9195 CRYPTO_get_mem_debug_functions() [F]
9196 CRYPTO_dbg_set_options() [F]
9197 CRYPTO_dbg_get_options() [F]
9198 CRYPTO_malloc_debug_init() [M]
9200 The memory debug functions are NULL by default, unless the library
9201 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
9202 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
9203 gives the standard debugging functions that come with OpenSSL) or
9204 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
9205 provided by the library user) must be used. When the standard
9206 debugging functions are used, CRYPTO_dbg_set_options can be used to
9207 request additional information:
9208 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
9209 the CRYPTO_MDEBUG_xxx macro when compiling the library.
9211 Also, things like CRYPTO_set_mem_functions will always give the
9212 expected result (the new set of functions is used for allocation
9213 and deallocation) at all times, regardless of platform and compiler
9216 To finish it up, some functions that were never use in any other
9217 way than through macros have a new API and new semantic:
9220 CRYPTO_dbg_realloc()
9223 All macros of value have retained their old syntax.
9224 [Richard Levitte and Bodo Moeller]
9226 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
9227 ordering of SMIMECapabilities wasn't in "strength order" and there
9228 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
9232 *) Some ASN1 types with illegal zero length encoding (INTEGER,
9233 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
9234 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
9236 *) Merge in my S/MIME library for OpenSSL. This provides a simple
9237 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
9238 functionality to handle multipart/signed properly) and a utility
9239 called 'smime' to call all this stuff. This is based on code I
9240 originally wrote for Celo who have kindly allowed it to be
9241 included in OpenSSL.
9244 *) Add variants des_set_key_checked and des_set_key_unchecked of
9245 des_set_key (aka des_key_sched). Global variable des_check_key
9246 decides which of these is called by des_set_key; this way
9247 des_check_key behaves as it always did, but applications and
9248 the library itself, which was buggy for des_check_key == 1,
9249 have a cleaner way to pick the version they need.
9252 *) New function PKCS12_newpass() which changes the password of a
9256 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
9257 dynamic mix. In both cases the ids can be used as an index into the
9258 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
9259 functions so they accept a list of the field values and the
9260 application doesn't need to directly manipulate the X509_TRUST
9264 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
9268 *) Modify the way the V3 extension code looks up extensions. This now
9269 works in a similar way to the object code: we have some "standard"
9270 extensions in a static table which is searched with OBJ_bsearch()
9271 and the application can add dynamic ones if needed. The file
9272 crypto/x509v3/ext_dat.h now has the info: this file needs to be
9273 updated whenever a new extension is added to the core code and kept
9274 in ext_nid order. There is a simple program 'tabtest.c' which checks
9275 this. New extensions are not added too often so this file can readily
9276 be maintained manually.
9278 There are two big advantages in doing things this way. The extensions
9279 can be looked up immediately and no longer need to be "added" using
9280 X509V3_add_standard_extensions(): this function now does nothing.
9281 [Side note: I get *lots* of email saying the extension code doesn't
9282 work because people forget to call this function]
9283 Also no dynamic allocation is done unless new extensions are added:
9284 so if we don't add custom extensions there is no need to call
9285 X509V3_EXT_cleanup().
9288 *) Modify enc utility's salting as follows: make salting the default. Add a
9289 magic header, so unsalted files fail gracefully instead of just decrypting
9290 to garbage. This is because not salting is a big security hole, so people
9291 should be discouraged from doing it.
9294 *) Fixes and enhancements to the 'x509' utility. It allowed a message
9295 digest to be passed on the command line but it only used this
9296 parameter when signing a certificate. Modified so all relevant
9297 operations are affected by the digest parameter including the
9298 -fingerprint and -x509toreq options. Also -x509toreq choked if a
9299 DSA key was used because it didn't fix the digest.
9302 *) Initial certificate chain verify code. Currently tests the untrusted
9303 certificates for consistency with the verify purpose (which is set
9304 when the X509_STORE_CTX structure is set up) and checks the pathlength.
9306 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
9307 this is because it will reject chains with invalid extensions whereas
9308 every previous version of OpenSSL and SSLeay made no checks at all.
9310 Trust code: checks the root CA for the relevant trust settings. Trust
9311 settings have an initial value consistent with the verify purpose: e.g.
9312 if the verify purpose is for SSL client use it expects the CA to be
9313 trusted for SSL client use. However the default value can be changed to
9314 permit custom trust settings: one example of this would be to only trust
9315 certificates from a specific "secure" set of CAs.
9317 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
9318 which should be used for version portability: especially since the
9319 verify structure is likely to change more often now.
9321 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
9322 to set them. If not set then assume SSL clients will verify SSL servers
9325 Two new options to the verify program: -untrusted allows a set of
9326 untrusted certificates to be passed in and -purpose which sets the
9327 intended purpose of the certificate. If a purpose is set then the
9328 new chain verify code is used to check extension consistency.
9331 *) Support for the authority information access extension.
9334 *) Modify RSA and DSA PEM read routines to transparently handle
9335 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
9336 public keys in a format compatible with certificate
9337 SubjectPublicKeyInfo structures. Unfortunately there were already
9338 functions called *_PublicKey_* which used various odd formats so
9339 these are retained for compatibility: however the DSA variants were
9340 never in a public release so they have been deleted. Changed dsa/rsa
9341 utilities to handle the new format: note no releases ever handled public
9342 keys so we should be OK.
9344 The primary motivation for this change is to avoid the same fiasco
9345 that dogs private keys: there are several incompatible private key
9346 formats some of which are standard and some OpenSSL specific and
9347 require various evil hacks to allow partial transparent handling and
9348 even then it doesn't work with DER formats. Given the option anything
9349 other than PKCS#8 should be dumped: but the other formats have to
9350 stay in the name of compatibility.
9352 With public keys and the benefit of hindsight one standard format
9353 is used which works with EVP_PKEY, RSA or DSA structures: though
9354 it clearly returns an error if you try to read the wrong kind of key.
9356 Added a -pubkey option to the 'x509' utility to output the public key.
9357 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
9358 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
9359 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
9360 that do the same as the EVP_PKEY_assign_*() except they up the
9361 reference count of the added key (they don't "swallow" the
9365 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
9366 CRLs would fail if the file contained no certificates or no CRLs:
9367 added a new function to read in both types and return the number
9368 read: this means that if none are read it will be an error. The
9369 DER versions of the certificate and CRL reader would always fail
9370 because it isn't possible to mix certificates and CRLs in DER format
9371 without choking one or the other routine. Changed this to just read
9372 a certificate: this is the best we can do. Also modified the code
9373 in apps/verify.c to take notice of return codes: it was previously
9374 attempting to read in certificates from NULL pointers and ignoring
9375 any errors: this is one reason why the cert and CRL reader seemed
9376 to work. It doesn't check return codes from the default certificate
9377 routines: these may well fail if the certificates aren't installed.
9380 *) Code to support otherName option in GeneralName.
9383 *) First update to verify code. Change the verify utility
9384 so it warns if it is passed a self signed certificate:
9385 for consistency with the normal behaviour. X509_verify
9386 has been modified to it will now verify a self signed
9387 certificate if *exactly* the same certificate appears
9388 in the store: it was previously impossible to trust a
9389 single self signed certificate. This means that:
9390 openssl verify ss.pem
9391 now gives a warning about a self signed certificate but
9392 openssl verify -CAfile ss.pem ss.pem
9396 *) For servers, store verify_result in SSL_SESSION data structure
9397 (and add it to external session representation).
9398 This is needed when client certificate verifications fails,
9399 but an application-provided verification callback (set by
9400 SSL_CTX_set_cert_verify_callback) allows accepting the session
9401 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
9402 but returns 1): When the session is reused, we have to set
9403 ssl->verify_result to the appropriate error code to avoid
9405 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
9407 *) Fix a bug in the new PKCS#7 code: it didn't consider the
9408 case in PKCS7_dataInit() where the signed PKCS7 structure
9409 didn't contain any existing data because it was being created.
9410 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
9412 *) Add a salt to the key derivation routines in enc.c. This
9413 forms the first 8 bytes of the encrypted file. Also add a
9414 -S option to allow a salt to be input on the command line.
9417 *) New function X509_cmp(). Oddly enough there wasn't a function
9418 to compare two certificates. We do this by working out the SHA1
9419 hash and comparing that. X509_cmp() will be needed by the trust
9423 *) SSL_get1_session() is like SSL_get_session(), but increments
9424 the reference count in the SSL_SESSION returned.
9425 [Geoff Thorpe <geoff@eu.c2.net>]
9427 *) Fix for 'req': it was adding a null to request attributes.
9428 Also change the X509_LOOKUP and X509_INFO code to handle
9429 certificate auxiliary information.
9432 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
9436 *) Add the possibility to add extra information to the memory leak
9437 detecting output, to form tracebacks, showing from where each
9438 allocation was originated: CRYPTO_push_info("constant string") adds
9439 the string plus current file name and line number to a per-thread
9440 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
9441 is like calling CYRPTO_pop_info() until the stack is empty.
9442 Also updated memory leak detection code to be multi-thread-safe.
9445 *) Add options -text and -noout to pkcs7 utility and delete the
9446 encryption options which never did anything. Update docs.
9449 *) Add options to some of the utilities to allow the pass phrase
9450 to be included on either the command line (not recommended on
9451 OSes like Unix) or read from the environment. Update the
9452 manpages and fix a few bugs.
9455 *) Add a few manpages for some of the openssl commands.
9458 *) Fix the -revoke option in ca. It was freeing up memory twice,
9459 leaking and not finding already revoked certificates.
9462 *) Extensive changes to support certificate auxiliary information.
9463 This involves the use of X509_CERT_AUX structure and X509_AUX
9464 functions. An X509_AUX function such as PEM_read_X509_AUX()
9465 can still read in a certificate file in the usual way but it
9466 will also read in any additional "auxiliary information". By
9467 doing things this way a fair degree of compatibility can be
9468 retained: existing certificates can have this information added
9469 using the new 'x509' options.
9471 Current auxiliary information includes an "alias" and some trust
9472 settings. The trust settings will ultimately be used in enhanced
9473 certificate chain verification routines: currently a certificate
9474 can only be trusted if it is self signed and then it is trusted
9478 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
9479 The problem was that one of the replacement routines had not been working
9480 since SSLeay releases. For now the offending routine has been replaced
9481 with non-optimised assembler. Even so, this now gives around 95%
9482 performance improvement for 1024 bit RSA signs.
9485 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
9486 handling. Most clients have the effective key size in bits equal to
9487 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
9488 A few however don't do this and instead use the size of the decrypted key
9489 to determine the RC2 key length and the AlgorithmIdentifier to determine
9490 the effective key length. In this case the effective key length can still
9491 be 40 bits but the key length can be 168 bits for example. This is fixed
9492 by manually forcing an RC2 key into the EVP_PKEY structure because the
9493 EVP code can't currently handle unusual RC2 key sizes: it always assumes
9494 the key length and effective key length are equal.
9497 *) Add a bunch of functions that should simplify the creation of
9498 X509_NAME structures. Now you should be able to do:
9499 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
9500 and have it automatically work out the correct field type and fill in
9501 the structures. The more adventurous can try:
9502 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
9503 and it will (hopefully) work out the correct multibyte encoding.
9506 *) Change the 'req' utility to use the new field handling and multibyte
9507 copy routines. Before the DN field creation was handled in an ad hoc
9508 way in req, ca, and x509 which was rather broken and didn't support
9509 BMPStrings or UTF8Strings. Since some software doesn't implement
9510 BMPStrings or UTF8Strings yet, they can be enabled using the config file
9511 using the dirstring_type option. See the new comment in the default
9512 openssl.cnf for more info.
9515 *) Make crypto/rand/md_rand.c more robust:
9516 - Assure unique random numbers after fork().
9517 - Make sure that concurrent threads access the global counter and
9518 md serializably so that we never lose entropy in them
9519 or use exactly the same state in multiple threads.
9520 Access to the large state is not always serializable because
9521 the additional locking could be a performance killer, and
9522 md should be large enough anyway.
9525 *) New file apps/app_rand.c with commonly needed functionality
9526 for handling the random seed file.
9528 Use the random seed file in some applications that previously did not:
9530 dsaparam -genkey (which also ignored its '-rand' option),
9533 x509 (when signing).
9534 Except on systems with /dev/urandom, it is crucial to have a random
9535 seed file at least for key creation, DSA signing, and for DH exchanges;
9536 for RSA signatures we could do without one.
9538 gendh and gendsa (unlike genrsa) used to read only the first byte
9539 of each file listed in the '-rand' option. The function as previously
9540 found in genrsa is now in app_rand.c and is used by all programs
9541 that support '-rand'.
9544 *) In RAND_write_file, use mode 0600 for creating files;
9545 don't just chmod when it may be too late.
9548 *) Report an error from X509_STORE_load_locations
9549 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
9552 *) New function ASN1_mbstring_copy() this copies a string in either
9553 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
9554 into an ASN1_STRING type. A mask of permissible types is passed
9555 and it chooses the "minimal" type to use or an error if not type
9559 *) Add function equivalents to the various macros in asn1.h. The old
9560 macros are retained with an M_ prefix. Code inside the library can
9561 use the M_ macros. External code (including the openssl utility)
9562 should *NOT* in order to be "shared library friendly".
9565 *) Add various functions that can check a certificate's extensions
9566 to see if it usable for various purposes such as SSL client,
9567 server or S/MIME and CAs of these types. This is currently
9568 VERY EXPERIMENTAL but will ultimately be used for certificate chain
9569 verification. Also added a -purpose flag to x509 utility to
9570 print out all the purposes.
9573 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
9577 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
9578 for, obtain and decode and extension and obtain its critical flag.
9579 This allows all the necessary extension code to be handled in a
9580 single function call.
9583 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
9584 platforms. See crypto/rc4/rc4_enc.c for further details.
9587 *) New -noout option to asn1parse. This causes no output to be produced
9588 its main use is when combined with -strparse and -out to extract data
9589 from a file (which may not be in ASN.1 format).
9592 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
9593 when producing the local key id.
9594 [Richard Levitte <levitte@stacken.kth.se>]
9596 *) New option -dhparam in s_server. This allows a DH parameter file to be
9597 stated explicitly. If it is not stated then it tries the first server
9598 certificate file. The previous behaviour hard coded the filename
9602 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
9603 a public key to be input or output. For example:
9604 openssl rsa -in key.pem -pubout -out pubkey.pem
9605 Also added necessary DSA public key functions to handle this.
9608 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
9609 in the message. This was handled by allowing
9610 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
9611 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
9613 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
9614 to the end of the strings whereas this didn't. This would cause problems
9615 if strings read with d2i_ASN1_bytes() were later modified.
9616 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
9618 *) Fix for base64 decode bug. When a base64 bio reads only one line of
9619 data and it contains EOF it will end up returning an error. This is
9620 caused by input 46 bytes long. The cause is due to the way base64
9621 BIOs find the start of base64 encoded data. They do this by trying a
9622 trial decode on each line until they find one that works. When they
9623 do a flag is set and it starts again knowing it can pass all the
9624 data directly through the decoder. Unfortunately it doesn't reset
9625 the context it uses. This means that if EOF is reached an attempt
9626 is made to pass two EOFs through the context and this causes the
9627 resulting error. This can also cause other problems as well. As is
9628 usual with these problems it takes *ages* to find and the fix is
9629 trivial: move one line.
9630 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
9632 *) Ugly workaround to get s_client and s_server working under Windows. The
9633 old code wouldn't work because it needed to select() on sockets and the
9634 tty (for keypresses and to see if data could be written). Win32 only
9635 supports select() on sockets so we select() with a 1s timeout on the
9636 sockets and then see if any characters are waiting to be read, if none
9637 are present then we retry, we also assume we can always write data to
9638 the tty. This isn't nice because the code then blocks until we've
9639 received a complete line of data and it is effectively polling the
9640 keyboard at 1s intervals: however it's quite a bit better than not
9641 working at all :-) A dedicated Windows application might handle this
9642 with an event loop for example.
9645 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
9646 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
9647 will be called when RSA_sign() and RSA_verify() are used. This is useful
9648 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
9649 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
9650 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
9651 This necessitated the support of an extra signature type NID_md5_sha1
9652 for SSL signatures and modifications to the SSL library to use it instead
9653 of calling RSA_public_decrypt() and RSA_private_encrypt().
9656 *) Add new -verify -CAfile and -CApath options to the crl program, these
9657 will lookup a CRL issuers certificate and verify the signature in a
9658 similar way to the verify program. Tidy up the crl program so it
9659 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
9660 less strict. It will now permit CRL extensions even if it is not
9661 a V2 CRL: this will allow it to tolerate some broken CRLs.
9664 *) Initialize all non-automatic variables each time one of the openssl
9665 sub-programs is started (this is necessary as they may be started
9666 multiple times from the "OpenSSL>" prompt).
9667 [Lennart Bang, Bodo Moeller]
9669 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
9670 removing all other RSA functionality (this is what NO_RSA does). This
9671 is so (for example) those in the US can disable those operations covered
9672 by the RSA patent while allowing storage and parsing of RSA keys and RSA
9676 *) Non-copying interface to BIO pairs.
9677 (still largely untested)
9680 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
9681 ASCII string. This was handled independently in various places before.
9684 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
9685 UTF8 strings a character at a time.
9688 *) Use client_version from client hello to select the protocol
9689 (s23_srvr.c) and for RSA client key exchange verification
9690 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
9693 *) Add various utility functions to handle SPKACs, these were previously
9694 handled by poking round in the structure internals. Added new function
9695 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
9696 print, verify and generate SPKACs. Based on an original idea from
9697 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
9700 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
9703 *) Allow the config file extension section to be overwritten on the
9704 command line. Based on an original idea from Massimiliano Pala
9705 <madwolf@comune.modena.it>. The new option is called -extensions
9706 and can be applied to ca, req and x509. Also -reqexts to override
9707 the request extensions in req and -crlexts to override the crl extensions
9711 *) Add new feature to the SPKAC handling in ca. Now you can include
9712 the same field multiple times by preceding it by "XXXX." for example:
9715 this is the same syntax as used in the req config file.
9718 *) Allow certificate extensions to be added to certificate requests. These
9719 are specified in a 'req_extensions' option of the req section of the
9720 config file. They can be printed out with the -text option to req but
9721 are otherwise ignored at present.
9724 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
9725 data read consists of only the final block it would not decrypted because
9726 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
9727 A misplaced 'break' also meant the decrypted final block might not be
9728 copied until the next read.
9731 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
9732 a few extra parameters to the DH structure: these will be useful if
9733 for example we want the value of 'q' or implement X9.42 DH.
9736 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
9737 provides hooks that allow the default DSA functions or functions on a
9738 "per key" basis to be replaced. This allows hardware acceleration and
9739 hardware key storage to be handled without major modification to the
9740 library. Also added low level modexp hooks and CRYPTO_EX structure and
9741 associated functions.
9744 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
9745 as "read only": it can't be written to and the buffer it points to will
9746 not be freed. Reading from a read only BIO is much more efficient than
9747 a normal memory BIO. This was added because there are several times when
9748 an area of memory needs to be read from a BIO. The previous method was
9749 to create a memory BIO and write the data to it, this results in two
9750 copies of the data and an O(n^2) reading algorithm. There is a new
9751 function BIO_new_mem_buf() which creates a read only memory BIO from
9752 an area of memory. Also modified the PKCS#7 routines to use read only
9756 *) Bugfix: ssl23_get_client_hello did not work properly when called in
9757 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
9758 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
9759 but a retry condition occured while trying to read the rest.
9762 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
9763 NID_pkcs7_encrypted by default: this was wrong since this should almost
9764 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
9765 the encrypted data type: this is a more sensible place to put it and it
9766 allows the PKCS#12 code to be tidied up that duplicated this
9770 *) Changed obj_dat.pl script so it takes its input and output files on
9771 the command line. This should avoid shell escape redirection problems
9775 *) Initial support for certificate extension requests, these are included
9776 in things like Xenroll certificate requests. Included functions to allow
9777 extensions to be obtained and added.
9780 *) -crlf option to s_client and s_server for sending newlines as
9781 CRLF (as required by many protocols).
9784 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
9786 *) Install libRSAglue.a when OpenSSL is built with RSAref.
9787 [Ralf S. Engelschall]
9789 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
9790 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
9792 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
9796 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
9797 DH parameters/keys (q is lost during that conversion, but the resulting
9798 DH parameters contain its length).
9800 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
9801 much faster than DH_generate_parameters (which creates parameters
9802 where p = 2*q + 1), and also the smaller q makes DH computations
9803 much more efficient (160-bit exponentiation instead of 1024-bit
9804 exponentiation); so this provides a convenient way to support DHE
9805 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
9806 utter importance to use
9807 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
9809 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
9810 when such DH parameters are used, because otherwise small subgroup
9811 attacks may become possible!
9814 *) Avoid memory leak in i2d_DHparams.
9817 *) Allow the -k option to be used more than once in the enc program:
9818 this allows the same encrypted message to be read by multiple recipients.
9821 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
9822 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
9823 it will always use the numerical form of the OID, even if it has a short
9827 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
9828 method only got called if p,q,dmp1,dmq1,iqmp components were present,
9829 otherwise bn_mod_exp was called. In the case of hardware keys for example
9830 no private key components need be present and it might store extra data
9831 in the RSA structure, which cannot be accessed from bn_mod_exp.
9832 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
9833 private key operations.
9836 *) Added support for SPARC Linux.
9839 *) pem_password_cb function type incompatibly changed from
9840 typedef int pem_password_cb(char *buf, int size, int rwflag);
9842 ....(char *buf, int size, int rwflag, void *userdata);
9843 so that applications can pass data to their callbacks:
9844 The PEM[_ASN1]_{read,write}... functions and macros now take an
9845 additional void * argument, which is just handed through whenever
9846 the password callback is called.
9847 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
9849 New function SSL_CTX_set_default_passwd_cb_userdata.
9851 Compatibility note: As many C implementations push function arguments
9852 onto the stack in reverse order, the new library version is likely to
9853 interoperate with programs that have been compiled with the old
9854 pem_password_cb definition (PEM_whatever takes some data that
9855 happens to be on the stack as its last argument, and the callback
9856 just ignores this garbage); but there is no guarantee whatsoever that
9859 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
9860 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
9861 problems not only on Windows, but also on some Unix platforms.
9862 To avoid problematic command lines, these definitions are now in an
9863 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
9864 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
9867 *) MIPS III/IV assembler module is reimplemented.
9870 *) More DES library cleanups: remove references to srand/rand and
9871 delete an unused file.
9874 *) Add support for the the free Netwide assembler (NASM) under Win32,
9875 since not many people have MASM (ml) and it can be hard to obtain.
9876 This is currently experimental but it seems to work OK and pass all
9877 the tests. Check out INSTALL.W32 for info.
9880 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
9881 without temporary keys kept an extra copy of the server key,
9882 and connections with temporary keys did not free everything in case
9886 *) New function RSA_check_key and new openssl rsa option -check
9887 for verifying the consistency of RSA keys.
9888 [Ulf Moeller, Bodo Moeller]
9890 *) Various changes to make Win32 compile work:
9891 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
9892 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
9893 comparison" warnings.
9894 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
9897 *) Add a debugging option to PKCS#5 v2 key generation function: when
9898 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
9899 derived keys are printed to stderr.
9902 *) Copy the flags in ASN1_STRING_dup().
9903 [Roman E. Pavlov <pre@mo.msk.ru>]
9905 *) The x509 application mishandled signing requests containing DSA
9906 keys when the signing key was also DSA and the parameters didn't match.
9908 It was supposed to omit the parameters when they matched the signing key:
9909 the verifying software was then supposed to automatically use the CA's
9910 parameters if they were absent from the end user certificate.
9912 Omitting parameters is no longer recommended. The test was also
9913 the wrong way round! This was probably due to unusual behaviour in
9914 EVP_cmp_parameters() which returns 1 if the parameters match.
9915 This meant that parameters were omitted when they *didn't* match and
9916 the certificate was useless. Certificates signed with 'ca' didn't have
9918 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
9920 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
9921 The interface is as follows:
9922 Applications can use
9923 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
9924 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
9925 "off" is now the default.
9926 The library internally uses
9927 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
9928 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
9929 to disable memory-checking temporarily.
9931 Some inconsistent states that previously were possible (and were
9932 even the default) are now avoided.
9934 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
9935 with each memory chunk allocated; this is occasionally more helpful
9936 than just having a counter.
9938 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
9940 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
9944 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
9945 which largely parallels "options", but is for changing API behaviour,
9946 whereas "options" are about protocol behaviour.
9947 Initial "mode" flags are:
9949 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
9950 a single record has been written.
9951 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
9952 retries use the same buffer location.
9953 (But all of the contents must be
9957 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
9960 *) Fix problems with no-hmac etc.
9961 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
9963 *) New functions RSA_get_default_method(), RSA_set_method() and
9964 RSA_get_method(). These allows replacement of RSA_METHODs without having
9965 to mess around with the internals of an RSA structure.
9968 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
9969 Also really enable memory leak checks in openssl.c and in some
9971 [Chad C. Mulligan, Bodo Moeller]
9973 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
9974 up the length of negative integers. This has now been simplified to just
9975 store the length when it is first determined and use it later, rather
9976 than trying to keep track of where data is copied and updating it to
9978 [Steve Henson, reported by Brien Wheeler
9979 <bwheeler@authentica-security.com>]
9981 *) Add a new function PKCS7_signatureVerify. This allows the verification
9982 of a PKCS#7 signature but with the signing certificate passed to the
9983 function itself. This contrasts with PKCS7_dataVerify which assumes the
9984 certificate is present in the PKCS#7 structure. This isn't always the
9985 case: certificates can be omitted from a PKCS#7 structure and be
9986 distributed by "out of band" means (such as a certificate database).
9989 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
9990 function prototypes in pem.h, also change util/mkdef.pl to add the
9991 necessary function names.
9994 *) mk1mf.pl (used by Windows builds) did not properly read the
9995 options set by Configure in the top level Makefile, and Configure
9996 was not even able to write more than one option correctly.
9997 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
10000 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
10001 file to be loaded from a BIO or FILE pointer. The BIO version will
10002 for example allow memory BIOs to contain config info.
10005 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
10006 Whoever hopes to achieve shared-library compatibility across versions
10007 must use this, not the compile-time macro.
10008 (Exercise 0.9.4: Which is the minimum library version required by
10010 Note: All this applies only to multi-threaded programs, others don't
10014 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
10015 through a BIO pair triggered the default case, i.e.
10016 SSLerr(...,SSL_R_UNKNOWN_STATE).
10019 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
10020 can use the SSL library even if none of the specific BIOs is
10024 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
10025 for the encoded length.
10026 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
10028 *) Add initial documentation of the X509V3 functions.
10031 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
10032 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
10033 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
10034 secure PKCS#8 private key format with a high iteration count.
10037 *) Fix determination of Perl interpreter: A perl or perl5
10038 _directory_ in $PATH was also accepted as the interpreter.
10039 [Ralf S. Engelschall]
10041 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
10042 wrong with it but it was very old and did things like calling
10043 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
10044 unusual formatting.
10047 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
10048 to use the new extension code.
10051 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
10052 with macros. This should make it easier to change their form, add extra
10053 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
10057 *) Add to configuration table a new entry that can specify an alternative
10058 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
10059 according to Mark Crispin <MRC@Panda.COM>.
10063 *) DES CBC did not update the IV. Weird.
10066 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
10067 Changing the behaviour of the former might break existing programs --
10068 where IV updating is needed, des_ncbc_encrypt can be used.
10071 *) When bntest is run from "make test" it drives bc to check its
10072 calculations, as well as internally checking them. If an internal check
10073 fails, it needs to cause bc to give a non-zero result or make test carries
10074 on without noticing the failure. Fixed.
10077 *) DES library cleanups.
10080 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
10081 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
10082 ciphers. NOTE: although the key derivation function has been verified
10083 against some published test vectors it has not been extensively tested
10084 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
10088 *) Instead of "mkdir -p", which is not fully portable, use new
10089 Perl script "util/mkdir-p.pl".
10092 *) Rewrite the way password based encryption (PBE) is handled. It used to
10093 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
10094 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
10095 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
10096 the 'parameter' field of the AlgorithmIdentifier is passed to the
10097 underlying key generation function so it must do its own ASN1 parsing.
10098 This has also changed the EVP_PBE_CipherInit() function which now has a
10099 'parameter' argument instead of literal salt and iteration count values
10100 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
10103 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
10104 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
10105 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
10106 KEY" because this clashed with PKCS#8 unencrypted string. Since this
10107 value was just used as a "magic string" and not used directly its
10108 value doesn't matter.
10111 *) Introduce some semblance of const correctness to BN. Shame C doesn't
10115 *) "linux-sparc64" configuration (ultrapenguin).
10116 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
10117 "linux-sparc" configuration.
10118 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
10120 *) config now generates no-xxx options for missing ciphers.
10123 *) Support the EBCDIC character set (work in progress).
10124 File ebcdic.c not yet included because it has a different license.
10125 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
10127 *) Support BS2000/OSD-POSIX.
10128 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
10130 *) Make callbacks for key generation use void * instead of char *.
10133 *) Make S/MIME samples compile (not yet tested).
10136 *) Additional typesafe stacks.
10139 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
10143 Changes between 0.9.3 and 0.9.3a [29 May 1999]
10145 *) New configuration variant "sco5-gcc".
10147 *) Updated some demos.
10148 [Sean O Riordain, Wade Scholine]
10150 *) Add missing BIO_free at exit of pkcs12 application.
10153 *) Fix memory leak in conf.c.
10156 *) Updates for Win32 to assembler version of MD5.
10159 *) Set #! path to perl in apps/der_chop to where we found it
10160 instead of using a fixed path.
10163 *) SHA library changes for irix64-mips4-cc.
10166 *) Improvements for VMS support.
10170 Changes between 0.9.2b and 0.9.3 [24 May 1999]
10172 *) Bignum library bug fix. IRIX 6 passes "make test" now!
10173 This also avoids the problems with SC4.2 and unpatched SC5.
10174 [Andy Polyakov <appro@fy.chalmers.se>]
10176 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
10177 These are required because of the typesafe stack would otherwise break
10178 existing code. If old code used a structure member which used to be STACK
10179 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
10180 sk_num or sk_value it would produce an error because the num, data members
10181 are not present in STACK_OF. Now it just produces a warning. sk_set
10182 replaces the old method of assigning a value to sk_value
10183 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
10184 that does this will no longer work (and should use sk_set instead) but
10185 this could be regarded as a "questionable" behaviour anyway.
10188 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
10189 correctly handle encrypted S/MIME data.
10192 *) Change type of various DES function arguments from des_cblock
10193 (which means, in function argument declarations, pointer to char)
10194 to des_cblock * (meaning pointer to array with 8 char elements),
10195 which allows the compiler to do more typechecking; it was like
10196 that back in SSLeay, but with lots of ugly casts.
10198 Introduce new type const_des_cblock.
10201 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
10202 problems: find RecipientInfo structure that matches recipient certificate
10203 and initialise the ASN1 structures properly based on passed cipher.
10206 *) Belatedly make the BN tests actually check the results.
10209 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
10210 to and from BNs: it was completely broken. New compilation option
10211 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
10212 key elements as negative integers.
10215 *) Reorganize and speed up MD5.
10216 [Andy Polyakov <appro@fy.chalmers.se>]
10219 [Richard Levitte <richard@levitte.org>]
10221 *) New option -out to asn1parse to allow the parsed structure to be
10222 output to a file. This is most useful when combined with the -strparse
10223 option to examine the output of things like OCTET STRINGS.
10226 *) Make SSL library a little more fool-proof by not requiring any longer
10227 that SSL_set_{accept,connect}_state be called before
10228 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
10229 in many applications because usually everything *appeared* to work as
10230 intended anyway -- now it really works as intended).
10233 *) Move openssl.cnf out of lib/.
10236 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
10237 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
10238 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
10239 [Ralf S. Engelschall]
10241 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
10242 handle PKCS#7 enveloped data properly.
10243 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
10245 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
10246 copying pointers. The cert_st handling is changed by this in
10247 various ways (and thus what used to be known as ctx->default_cert
10248 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
10249 any longer when s->cert does not give us what we need).
10250 ssl_cert_instantiate becomes obsolete by this change.
10251 As soon as we've got the new code right (possibly it already is?),
10252 we have solved a couple of bugs of the earlier code where s->cert
10253 was used as if it could not have been shared with other SSL structures.
10255 Note that using the SSL API in certain dirty ways now will result
10256 in different behaviour than observed with earlier library versions:
10257 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
10258 does not influence s as it used to.
10260 In order to clean up things more thoroughly, inside SSL_SESSION
10261 we don't use CERT any longer, but a new structure SESS_CERT
10262 that holds per-session data (if available); currently, this is
10263 the peer's certificate chain and, for clients, the server's certificate
10264 and temporary key. CERT holds only those values that can have
10265 meaningful defaults in an SSL_CTX.
10268 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
10269 from the internal representation. Various PKCS#7 fixes: remove some
10270 evil casts and set the enc_dig_alg field properly based on the signing
10274 *) Allow PKCS#12 password to be set from the command line or the
10275 environment. Let 'ca' get its config file name from the environment
10276 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
10280 *) Allow certificate policies extension to use an IA5STRING for the
10281 organization field. This is contrary to the PKIX definition but
10282 VeriSign uses it and IE5 only recognises this form. Document 'x509'
10286 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
10287 without disallowing inline assembler and the like for non-pedantic builds.
10290 *) Support Borland C++ builder.
10291 [Janez Jere <jj@void.si>, modified by Ulf Möller]
10293 *) Support Mingw32.
10296 *) SHA-1 cleanups and performance enhancements.
10297 [Andy Polyakov <appro@fy.chalmers.se>]
10299 *) Sparc v8plus assembler for the bignum library.
10300 [Andy Polyakov <appro@fy.chalmers.se>]
10302 *) Accept any -xxx and +xxx compiler options in Configure.
10305 *) Update HPUX configuration.
10308 *) Add missing sk_<type>_unshift() function to safestack.h
10309 [Ralf S. Engelschall]
10311 *) New function SSL_CTX_use_certificate_chain_file that sets the
10312 "extra_cert"s in addition to the certificate. (This makes sense
10313 only for "PEM" format files, as chains as a whole are not
10317 *) Support verify_depth from the SSL API.
10318 x509_vfy.c had what can be considered an off-by-one-error:
10319 Its depth (which was not part of the external interface)
10320 was actually counting the number of certificates in a chain;
10321 now it really counts the depth.
10324 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
10325 instead of X509err, which often resulted in confusing error
10326 messages since the error codes are not globally unique
10327 (e.g. an alleged error in ssl3_accept when a certificate
10328 didn't match the private key).
10330 *) New function SSL_CTX_set_session_id_context that allows to set a default
10331 value (so that you don't need SSL_set_session_id_context for each
10332 connection using the SSL_CTX).
10335 *) OAEP decoding bug fix.
10338 *) Support INSTALL_PREFIX for package builders, as proposed by
10342 *) New Configure options "threads" and "no-threads". For systems
10343 where the proper compiler options are known (currently Solaris
10344 and Linux), "threads" is the default.
10347 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
10350 *) Install various scripts to $(OPENSSLDIR)/misc, not to
10351 $(INSTALLTOP)/bin -- they shouldn't clutter directories
10352 such as /usr/local/bin.
10355 *) "make linux-shared" to build shared libraries.
10356 [Niels Poppe <niels@netbox.org>]
10358 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
10361 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
10362 extension adding in x509 utility.
10365 *) Remove NOPROTO sections and error code comments.
10368 *) Partial rewrite of the DEF file generator to now parse the ANSI
10372 *) New Configure options --prefix=DIR and --openssldir=DIR.
10375 *) Complete rewrite of the error code script(s). It is all now handled
10376 by one script at the top level which handles error code gathering,
10377 header rewriting and C source file generation. It should be much better
10378 than the old method: it now uses a modified version of Ulf's parser to
10379 read the ANSI prototypes in all header files (thus the old K&R definitions
10380 aren't needed for error creation any more) and do a better job of
10381 translating function codes into names. The old 'ASN1 error code imbedded
10382 in a comment' is no longer necessary and it doesn't use .err files which
10383 have now been deleted. Also the error code call doesn't have to appear all
10384 on one line (which resulted in some large lines...).
10387 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
10390 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
10391 0 (which usually indicates a closed connection), but continue reading.
10394 *) Fix some race conditions.
10397 *) Add support for CRL distribution points extension. Add Certificate
10398 Policies and CRL distribution points documentation.
10401 *) Move the autogenerated header file parts to crypto/opensslconf.h.
10404 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
10405 8 of keying material. Merlin has also confirmed interop with this fix
10406 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
10407 [Merlin Hughes <merlin@baltimore.ie>]
10409 *) Fix lots of warnings.
10410 [Richard Levitte <levitte@stacken.kth.se>]
10412 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
10413 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
10414 [Richard Levitte <levitte@stacken.kth.se>]
10416 *) Fix problems with sizeof(long) == 8.
10417 [Andy Polyakov <appro@fy.chalmers.se>]
10419 *) Change functions to ANSI C.
10422 *) Fix typos in error codes.
10423 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
10425 *) Remove defunct assembler files from Configure.
10428 *) SPARC v8 assembler BIGNUM implementation.
10429 [Andy Polyakov <appro@fy.chalmers.se>]
10431 *) Support for Certificate Policies extension: both print and set.
10432 Various additions to support the r2i method this uses.
10435 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
10436 return a const string when you are expecting an allocated buffer.
10439 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
10440 types DirectoryString and DisplayText.
10443 *) Add code to allow r2i extensions to access the configuration database,
10444 add an LHASH database driver and add several ctx helper functions.
10447 *) Fix an evil bug in bn_expand2() which caused various BN functions to
10448 fail when they extended the size of a BIGNUM.
10451 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
10452 support typesafe stack.
10455 *) Fix typo in SSL_[gs]et_options().
10456 [Nils Frostberg <nils@medcom.se>]
10458 *) Delete various functions and files that belonged to the (now obsolete)
10459 old X509V3 handling code.
10462 *) New Configure option "rsaref".
10465 *) Don't auto-generate pem.h.
10468 *) Introduce type-safe ASN.1 SETs.
10471 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
10472 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
10474 *) Introduce type-safe STACKs. This will almost certainly break lots of code
10475 that links with OpenSSL (well at least cause lots of warnings), but fear
10476 not: the conversion is trivial, and it eliminates loads of evil casts. A
10477 few STACKed things have been converted already. Feel free to convert more.
10478 In the fullness of time, I'll do away with the STACK type altogether.
10481 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
10482 specified in <certfile> by updating the entry in the index.txt file.
10483 This way one no longer has to edit the index.txt file manually for
10484 revoking a certificate. The -revoke option does the gory details now.
10485 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
10487 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
10488 `-text' option at all and this way the `-noout -text' combination was
10489 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
10490 [Ralf S. Engelschall]
10492 *) Make sure a corresponding plain text error message exists for the
10493 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
10494 verify callback function determined that a certificate was revoked.
10495 [Ralf S. Engelschall]
10497 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
10498 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
10499 all available cipers including rc5, which was forgotten until now.
10500 In order to let the testing shell script know which algorithms
10501 are available, a new (up to now undocumented) command
10502 "openssl list-cipher-commands" is used.
10505 *) Bugfix: s_client occasionally would sleep in select() when
10506 it should have checked SSL_pending() first.
10509 *) New functions DSA_do_sign and DSA_do_verify to provide access to
10510 the raw DSA values prior to ASN.1 encoding.
10513 *) Tweaks to Configure
10514 [Niels Poppe <niels@netbox.org>]
10516 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
10520 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
10523 *) New config option to avoid instructions that are illegal on the 80386.
10524 The default code is faster, but requires at least a 486.
10527 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
10528 SSL2_SERVER_VERSION (not used at all) macros, which are now the
10529 same as SSL2_VERSION anyway.
10532 *) New "-showcerts" option for s_client.
10535 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
10536 application. Various cleanups and fixes.
10539 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
10540 modify error routines to work internally. Add error codes and PBE init
10541 to library startup routines.
10544 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
10545 packing functions to asn1 and evp. Changed function names and error
10546 codes along the way.
10549 *) PKCS12 integration: and so it begins... First of several patches to
10550 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
10551 objects to objects.h
10554 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
10555 and display support for Thawte strong extranet extension.
10558 *) Add LinuxPPC support.
10559 [Jeff Dubrule <igor@pobox.org>]
10561 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
10562 bn_div_words in alpha.s.
10563 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
10565 *) Make sure the RSA OAEP test is skipped under -DRSAref because
10566 OAEP isn't supported when OpenSSL is built with RSAref.
10567 [Ulf Moeller <ulf@fitug.de>]
10569 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
10570 so they no longer are missing under -DNOPROTO.
10571 [Soren S. Jorvang <soren@t.dk>]
10574 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
10576 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
10577 doesn't work when the session is reused. Coming soon!
10580 *) Fix a security hole, that allows sessions to be reused in the wrong
10581 context thus bypassing client cert protection! All software that uses
10582 client certs and session caches in multiple contexts NEEDS PATCHING to
10583 allow session reuse! A fuller solution is in the works.
10584 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
10586 *) Some more source tree cleanups (removed obsolete files
10587 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
10588 permission on "config" script to be executable) and a fix for the INSTALL
10590 [Ulf Moeller <ulf@fitug.de>]
10592 *) Remove some legacy and erroneous uses of malloc, free instead of
10594 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
10596 *) Make rsa_oaep_test return non-zero on error.
10597 [Ulf Moeller <ulf@fitug.de>]
10599 *) Add support for native Solaris shared libraries. Configure
10600 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
10601 if someone would make that last step automatic.
10602 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
10604 *) ctx_size was not built with the right compiler during "make links". Fixed.
10607 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
10608 except NULL ciphers". This means the default cipher list will no longer
10609 enable NULL ciphers. They need to be specifically enabled e.g. with
10610 the string "DEFAULT:eNULL".
10613 *) Fix to RSA private encryption routines: if p < q then it would
10614 occasionally produce an invalid result. This will only happen with
10615 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
10618 *) Be less restrictive and allow also `perl util/perlpath.pl
10619 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
10620 because this way one can also use an interpreter named `perl5' (which is
10621 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
10622 installed as `perl').
10623 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10625 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
10626 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10628 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
10629 advapi32.lib to Win32 build and change the pem test comparison
10630 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
10631 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
10632 and crypto/des/ede_cbcm_enc.c.
10635 *) DES quad checksum was broken on big-endian architectures. Fixed.
10638 *) Comment out two functions in bio.h that aren't implemented. Fix up the
10639 Win32 test batch file so it (might) work again. The Win32 test batch file
10640 is horrible: I feel ill....
10643 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
10644 in e_os.h. Audit of header files to check ANSI and non ANSI
10645 sections: 10 functions were absent from non ANSI section and not exported
10646 from Windows DLLs. Fixed up libeay.num for new functions.
10649 *) Make `openssl version' output lines consistent.
10650 [Ralf S. Engelschall]
10652 *) Fix Win32 symbol export lists for BIO functions: Added
10653 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
10654 to ms/libeay{16,32}.def.
10655 [Ralf S. Engelschall]
10657 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
10658 fine under Unix and passes some trivial tests I've now added. But the
10659 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
10660 added to make sure no one expects that this stuff really works in the
10661 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
10662 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
10664 [Ralf S. Engelschall]
10666 *) Fix the generation of two part addresses in perl.
10667 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
10669 *) Add config entry for Linux on MIPS.
10670 [John Tobey <jtobey@channel1.com>]
10672 *) Make links whenever Configure is run, unless we are on Windoze.
10675 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
10676 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
10680 *) Add a useful kludge to allow package maintainers to specify compiler and
10681 other platforms details on the command line without having to patch the
10682 Configure script everytime: One now can use ``perl Configure
10683 <id>:<details>'', i.e. platform ids are allowed to have details appended
10684 to them (separated by colons). This is treated as there would be a static
10685 pre-configured entry in Configure's %table under key <id> with value
10686 <details> and ``perl Configure <id>'' is called. So, when you want to
10687 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
10688 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
10689 now, which overrides the FreeBSD-elf entry on-the-fly.
10690 [Ralf S. Engelschall]
10692 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
10695 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
10696 on the `perl Configure ...' command line. This way one can compile
10697 OpenSSL libraries with Position Independent Code (PIC) which is needed
10698 for linking it into DSOs.
10699 [Ralf S. Engelschall]
10701 *) Remarkably, export ciphers were totally broken and no-one had noticed!
10705 *) Cleaned up the LICENSE document: The official contact for any license
10706 questions now is the OpenSSL core team under openssl-core@openssl.org.
10707 And add a paragraph about the dual-license situation to make sure people
10708 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
10709 to the OpenSSL toolkit.
10710 [Ralf S. Engelschall]
10712 *) General source tree makefile cleanups: Made `making xxx in yyy...'
10713 display consistent in the source tree and replaced `/bin/rm' by `rm'.
10714 Additionally cleaned up the `make links' target: Remove unnecessary
10715 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
10716 to speed processing and no longer clutter the display with confusing
10717 stuff. Instead only the actually done links are displayed.
10718 [Ralf S. Engelschall]
10720 *) Permit null encryption ciphersuites, used for authentication only. It used
10721 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
10722 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
10726 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
10727 signed attributes when verifying signatures (this would break them),
10728 the detached data encoding was wrong and public keys obtained using
10729 X509_get_pubkey() weren't freed.
10732 *) Add text documentation for the BUFFER functions. Also added a work around
10733 to a Win95 console bug. This was triggered by the password read stuff: the
10734 last character typed gets carried over to the next fread(). If you were
10735 generating a new cert request using 'req' for example then the last
10736 character of the passphrase would be CR which would then enter the first
10740 *) Added the new `Includes OpenSSL Cryptography Software' button as
10741 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
10742 button and can be used by applications based on OpenSSL to show the
10743 relationship to the OpenSSL project.
10744 [Ralf S. Engelschall]
10746 *) Remove confusing variables in function signatures in files
10747 ssl/ssl_lib.c and ssl/ssl.h.
10748 [Lennart Bong <lob@kulthea.stacken.kth.se>]
10750 *) Don't install bss_file.c under PREFIX/include/
10751 [Lennart Bong <lob@kulthea.stacken.kth.se>]
10753 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
10754 functions that return function pointers and has support for NT specific
10755 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
10756 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
10757 unsigned to signed types: this was killing the Win32 compile.
10760 *) Add new certificate file to stack functions,
10761 SSL_add_dir_cert_subjects_to_stack() and
10762 SSL_add_file_cert_subjects_to_stack(). These largely supplant
10763 SSL_load_client_CA_file(), and can be used to add multiple certs easily
10764 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
10765 This means that Apache-SSL and similar packages don't have to mess around
10766 to add as many CAs as they want to the preferred list.
10769 *) Experiment with doxygen documentation. Currently only partially applied to
10771 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
10772 openssl.doxy as the configuration file.
10775 *) Get rid of remaining C++-style comments which strict C compilers hate.
10776 [Ralf S. Engelschall, pointed out by Carlos Amengual]
10778 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
10779 compiled in by default: it has problems with large keys.
10782 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
10783 DH private keys and/or callback functions which directly correspond to
10784 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
10785 is needed for applications which have to configure certificates on a
10786 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
10788 For the RSA certificate situation is makes no difference, but
10789 for the DSA certificate situation this fixes the "no shared cipher"
10790 problem where the OpenSSL cipher selection procedure failed because the
10791 temporary keys were not overtaken from the context and the API provided
10792 no way to reconfigure them.
10793 The new functions now let applications reconfigure the stuff and they
10794 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
10795 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
10796 non-public-API function ssl_cert_instantiate() is used as a helper
10797 function and also to reduce code redundancy inside ssl_rsa.c.
10798 [Ralf S. Engelschall]
10800 *) Move s_server -dcert and -dkey options out of the undocumented feature
10801 area because they are useful for the DSA situation and should be
10802 recognized by the users.
10803 [Ralf S. Engelschall]
10805 *) Fix the cipher decision scheme for export ciphers: the export bits are
10806 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
10807 SSL_EXP_MASK. So, the original variable has to be used instead of the
10808 already masked variable.
10809 [Richard Levitte <levitte@stacken.kth.se>]
10811 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
10812 [Richard Levitte <levitte@stacken.kth.se>]
10814 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
10815 from `int' to `unsigned int' because it's a length and initialized by
10816 EVP_DigestFinal() which expects an `unsigned int *'.
10817 [Richard Levitte <levitte@stacken.kth.se>]
10819 *) Don't hard-code path to Perl interpreter on shebang line of Configure
10820 script. Instead use the usual Shell->Perl transition trick.
10821 [Ralf S. Engelschall]
10823 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
10824 (in addition to RSA certificates) to match the behaviour of `openssl dsa
10825 -noout -modulus' as it's already the case for `openssl rsa -noout
10826 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
10827 currently the public key is printed (a decision which was already done by
10828 `openssl dsa -modulus' in the past) which serves a similar purpose.
10829 Additionally the NO_RSA no longer completely removes the whole -modulus
10830 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
10832 [Ralf S. Engelschall]
10834 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
10835 BIO. See the source (crypto/evp/bio_ok.c) for more info.
10836 [Arne Ansper <arne@ats.cyber.ee>]
10838 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
10839 to be added. Now both 'req' and 'ca' can use new objects defined in the
10843 *) Add cool BIO that does syslog (or event log on NT).
10844 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
10846 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
10847 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
10848 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
10849 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
10852 *) Add preliminary config info for new extension code.
10855 *) Make RSA_NO_PADDING really use no padding.
10856 [Ulf Moeller <ulf@fitug.de>]
10858 *) Generate errors when private/public key check is done.
10861 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
10862 for some CRL extensions and new objects added.
10865 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
10866 key usage extension and fuller support for authority key id.
10869 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
10870 padding method for RSA, which is recommended for new applications in PKCS
10871 #1 v2.0 (RFC 2437, October 1998).
10872 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
10873 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
10874 against Bleichbacher's attack on RSA.
10875 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
10878 *) Updates to the new SSL compression code
10879 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10881 *) Fix so that the version number in the master secret, when passed
10882 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
10883 (because the server will not accept higher), that the version number
10884 is 0x03,0x01, not 0x03,0x00
10885 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10887 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
10888 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
10889 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
10892 *) Support for RAW extensions where an arbitrary extension can be
10893 created by including its DER encoding. See apps/openssl.cnf for
10897 *) Make sure latest Perl versions don't interpret some generated C array
10898 code as Perl array code in the crypto/err/err_genc.pl script.
10899 [Lars Weber <3weber@informatik.uni-hamburg.de>]
10901 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
10902 not many people have the assembler. Various Win32 compilation fixes and
10903 update to the INSTALL.W32 file with (hopefully) more accurate Win32
10904 build instructions.
10907 *) Modify configure script 'Configure' to automatically create crypto/date.h
10908 file under Win32 and also build pem.h from pem.org. New script
10909 util/mkfiles.pl to create the MINFO file on environments that can't do a
10910 'make files': perl util/mkfiles.pl >MINFO should work.
10913 *) Major rework of DES function declarations, in the pursuit of correctness
10914 and purity. As a result, many evil casts evaporated, and some weirdness,
10915 too. You may find this causes warnings in your code. Zapping your evil
10916 casts will probably fix them. Mostly.
10919 *) Fix for a typo in asn1.h. Bug fix to object creation script
10920 obj_dat.pl. It considered a zero in an object definition to mean
10921 "end of object": none of the objects in objects.h have any zeros
10922 so it wasn't spotted.
10923 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
10925 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
10926 Masking (CBCM). In the absence of test vectors, the best I have been able
10927 to do is check that the decrypt undoes the encrypt, so far. Send me test
10928 vectors if you have them.
10931 *) Correct calculation of key length for export ciphers (too much space was
10932 allocated for null ciphers). This has not been tested!
10935 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
10936 message is now correct (it understands "crypto" and "ssl" on its
10937 command line). There is also now an "update" option. This will update
10938 the util/ssleay.num and util/libeay.num files with any new functions.
10940 perl util/mkdef.pl crypto ssl update
10941 it will update them.
10944 *) Overhauled the Perl interface (perl/*):
10945 - ported BN stuff to OpenSSL's different BN library
10946 - made the perl/ source tree CVS-aware
10947 - renamed the package from SSLeay to OpenSSL (the files still contain
10948 their history because I've copied them in the repository)
10949 - removed obsolete files (the test scripts will be replaced
10950 by better Test::Harness variants in the future)
10951 [Ralf S. Engelschall]
10953 *) First cut for a very conservative source tree cleanup:
10954 1. merge various obsolete readme texts into doc/ssleay.txt
10955 where we collect the old documents and readme texts.
10956 2. remove the first part of files where I'm already sure that we no
10957 longer need them because of three reasons: either they are just temporary
10958 files which were left by Eric or they are preserved original files where
10959 I've verified that the diff is also available in the CVS via "cvs diff
10960 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
10961 the crypto/md/ stuff).
10962 [Ralf S. Engelschall]
10964 *) More extension code. Incomplete support for subject and issuer alt
10965 name, issuer and authority key id. Change the i2v function parameters
10966 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
10967 what that's for :-) Fix to ASN1 macro which messed up
10968 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
10971 *) Preliminary support for ENUMERATED type. This is largely copied from the
10975 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
10976 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10978 *) Make sure `make rehash' target really finds the `openssl' program.
10979 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10981 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
10982 like to hear about it if this slows down other processors.
10985 *) Add CygWin32 platform information to Configure script.
10986 [Alan Batie <batie@aahz.jf.intel.com>]
10988 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
10989 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
10991 *) New program nseq to manipulate netscape certificate sequences
10994 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
10998 *) Fixes to BN code. Previously the default was to define BN_RECURSION
10999 but the BN code had some problems that would cause failures when
11000 doing certificate verification and some other functions.
11001 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
11003 *) Add ASN1 and PEM code to support netscape certificate sequences.
11006 *) Add ASN1 and PEM code to support netscape certificate sequences.
11009 *) Add several PKIX and private extended key usage OIDs.
11012 *) Modify the 'ca' program to handle the new extension code. Modify
11013 openssl.cnf for new extension format, add comments.
11016 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
11017 and add a sample to openssl.cnf so req -x509 now adds appropriate
11021 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
11022 error code, add initial support to X509_print() and x509 application.
11025 *) Takes a deep breath and start adding X509 V3 extension support code. Add
11026 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
11027 stuff is currently isolated and isn't even compiled yet.
11030 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
11031 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
11032 Removed the versions check from X509 routines when loading extensions:
11033 this allows certain broken certificates that don't set the version
11034 properly to be processed.
11037 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
11038 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
11039 can still be regenerated with "make depend".
11042 *) Spelling mistake in C version of CAST-128.
11043 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
11045 *) Changes to the error generation code. The perl script err-code.pl
11046 now reads in the old error codes and retains the old numbers, only
11047 adding new ones if necessary. It also only changes the .err files if new
11048 codes are added. The makefiles have been modified to only insert errors
11049 when needed (to avoid needlessly modifying header files). This is done
11050 by only inserting errors if the .err file is newer than the auto generated
11051 C file. To rebuild all the error codes from scratch (the old behaviour)
11052 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
11053 or delete all the .err files.
11056 *) CAST-128 was incorrectly implemented for short keys. The C version has
11057 been fixed, but is untested. The assembler versions are also fixed, but
11058 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
11059 to regenerate it if needed.
11060 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
11061 Hagino <itojun@kame.net>]
11063 *) File was opened incorrectly in randfile.c.
11064 [Ulf Möller <ulf@fitug.de>]
11066 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
11067 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
11068 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
11069 al: it's just almost always a UTCTime. Note this patch adds new error
11070 codes so do a "make errors" if there are problems.
11073 *) Correct Linux 1 recognition in config.
11074 [Ulf Möller <ulf@fitug.de>]
11076 *) Remove pointless MD5 hash when using DSA keys in ca.
11077 [Anonymous <nobody@replay.com>]
11079 *) Generate an error if given an empty string as a cert directory. Also
11080 generate an error if handed NULL (previously returned 0 to indicate an
11081 error, but didn't set one).
11082 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
11084 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
11087 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
11088 parameters. This was causing a warning which killed off the Win32 compile.
11091 *) Remove C++ style comments from crypto/bn/bn_local.h.
11092 [Neil Costigan <neil.costigan@celocom.com>]
11094 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
11095 based on a text string, looking up short and long names and finally
11096 "dot" format. The "dot" format stuff didn't work. Added new function
11097 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
11098 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
11099 OID is not part of the table.
11102 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
11103 X509_LOOKUP_by_alias().
11106 *) Sort openssl functions by name.
11109 *) Get the gendsa program working (hopefully) and add it to app list. Remove
11110 encryption from sample DSA keys (in case anyone is interested the password
11114 *) Make _all_ *_free functions accept a NULL pointer.
11115 [Frans Heymans <fheymans@isaserver.be>]
11117 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
11119 [Anonymous <nobody@replay.com>]
11121 *) s_server should send the CAfile as acceptable CAs, not its own cert.
11122 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
11124 *) Don't blow it for numeric -newkey arguments to apps/req.
11125 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
11127 *) Temp key "for export" tests were wrong in s3_srvr.c.
11128 [Anonymous <nobody@replay.com>]
11130 *) Add prototype for temp key callback functions
11131 SSL_CTX_set_tmp_{rsa,dh}_callback().
11134 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
11135 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
11138 *) X509_name_add_entry() freed the wrong thing after an error.
11139 [Arne Ansper <arne@ats.cyber.ee>]
11141 *) rsa_eay.c would attempt to free a NULL context.
11142 [Arne Ansper <arne@ats.cyber.ee>]
11144 *) BIO_s_socket() had a broken should_retry() on Windoze.
11145 [Arne Ansper <arne@ats.cyber.ee>]
11147 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
11148 [Arne Ansper <arne@ats.cyber.ee>]
11150 *) Make sure the already existing X509_STORE->depth variable is initialized
11151 in X509_STORE_new(), but document the fact that this variable is still
11152 unused in the certificate verification process.
11153 [Ralf S. Engelschall]
11155 *) Fix the various library and apps files to free up pkeys obtained from
11156 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
11159 *) Fix reference counting in X509_PUBKEY_get(). This makes
11160 demos/maurice/example2.c work, amongst others, probably.
11161 [Steve Henson and Ben Laurie]
11163 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
11164 `openssl' and second, the shortcut symlinks for the `openssl <command>'
11165 are no longer created. This way we have a single and consistent command
11166 line interface `openssl <command>', similar to `cvs <command>'.
11167 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
11169 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
11170 BIT STRING wrapper always have zero unused bits.
11173 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
11176 *) Make the top-level INSTALL documentation easier to understand.
11179 *) Makefiles updated to exit if an error occurs in a sub-directory
11180 make (including if user presses ^C) [Paul Sutton]
11182 *) Make Montgomery context stuff explicit in RSA data structure.
11185 *) Fix build order of pem and err to allow for generated pem.h.
11188 *) Fix renumbering bug in X509_NAME_delete_entry().
11191 *) Enhanced the err-ins.pl script so it makes the error library number
11192 global and can add a library name. This is needed for external ASN1 and
11193 other error libraries.
11196 *) Fixed sk_insert which never worked properly.
11199 *) Fix ASN1 macros so they can handle indefinite length constructed
11200 EXPLICIT tags. Some non standard certificates use these: they can now
11204 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
11205 into a single doc/ssleay.txt bundle. This way the information is still
11206 preserved but no longer messes up this directory. Now it's new room for
11207 the new set of documentation files.
11208 [Ralf S. Engelschall]
11210 *) SETs were incorrectly DER encoded. This was a major pain, because they
11211 shared code with SEQUENCEs, which aren't coded the same. This means that
11212 almost everything to do with SETs or SEQUENCEs has either changed name or
11213 number of arguments.
11214 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
11216 *) Fix test data to work with the above.
11219 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
11220 was already fixed by Eric for 0.9.1 it seems.
11221 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
11223 *) Autodetect FreeBSD3.
11226 *) Fix various bugs in Configure. This affects the following platforms:
11230 unixware-2.0-pentium
11234 *) Eliminate generated files from CVS. Reorder tests to regenerate files
11235 before they are needed.
11238 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
11242 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
11244 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
11245 changed SSLeay to OpenSSL in version strings.
11246 [Ralf S. Engelschall]
11248 *) Some fixups to the top-level documents.
11251 *) Fixed the nasty bug where rsaref.h was not found under compile-time
11252 because the symlink to include/ was missing.
11253 [Ralf S. Engelschall]
11255 *) Incorporated the popular no-RSA/DSA-only patches
11256 which allow to compile a RSA-free SSLeay.
11257 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
11259 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
11260 when "ssleay" is still not found.
11261 [Ralf S. Engelschall]
11263 *) Added more platforms to Configure: Cray T3E, HPUX 11,
11264 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
11266 *) Updated the README file.
11267 [Ralf S. Engelschall]
11269 *) Added various .cvsignore files in the CVS repository subdirs
11270 to make a "cvs update" really silent.
11271 [Ralf S. Engelschall]
11273 *) Recompiled the error-definition header files and added
11274 missing symbols to the Win32 linker tables.
11275 [Ralf S. Engelschall]
11277 *) Cleaned up the top-level documents;
11278 o new files: CHANGES and LICENSE
11279 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
11280 o merged COPYRIGHT into LICENSE
11281 o removed obsolete TODO file
11282 o renamed MICROSOFT to INSTALL.W32
11283 [Ralf S. Engelschall]
11285 *) Removed dummy files from the 0.9.1b source tree:
11286 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
11287 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
11288 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
11289 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
11290 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
11291 [Ralf S. Engelschall]
11293 *) Added various platform portability fixes.
11296 *) The Genesis of the OpenSSL rpject:
11297 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
11298 Young and Tim J. Hudson created while they were working for C2Net until
11300 [The OpenSSL Project]
11303 Changes between 0.9.0b and 0.9.1b [not released]
11305 *) Updated a few CA certificates under certs/
11308 *) Changed some BIGNUM api stuff.
11311 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
11312 DGUX x86, Linux Alpha, etc.
11315 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
11316 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
11320 *) Add -strparse option to asn1pars program which parses nested
11322 [Dr Stephen Henson <shenson@bigfoot.com>]
11324 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
11327 *) DSA fix for "ca" program.
11330 *) Added "-genkey" option to "dsaparam" program.
11333 *) Added RIPE MD160 (rmd160) message digest.
11336 *) Added -a (all) option to "ssleay version" command.
11339 *) Added PLATFORM define which is the id given to Configure.
11342 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
11345 *) Extended the ASN.1 parser routines.
11348 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
11351 *) Added a BN_CTX to the BN library.
11354 *) Fixed the weak key values in DES library
11357 *) Changed API in EVP library for cipher aliases.
11360 *) Added support for RC2/64bit cipher.
11363 *) Converted the lhash library to the crypto/mem.c functions.
11366 *) Added more recognized ASN.1 object ids.
11369 *) Added more RSA padding checks for SSL/TLS.
11372 *) Added BIO proxy/filter functionality.
11375 *) Added extra_certs to SSL_CTX which can be used
11376 send extra CA certificates to the client in the CA cert chain sending
11377 process. It can be configured with SSL_CTX_add_extra_chain_cert().
11380 *) Now Fortezza is denied in the authentication phase because
11381 this is key exchange mechanism is not supported by SSLeay at all.
11384 *) Additional PKCS1 checks.
11387 *) Support the string "TLSv1" for all TLS v1 ciphers.
11390 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
11391 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
11394 *) Fixed a few memory leaks.
11397 *) Fixed various code and comment typos.
11400 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
11401 bytes sent in the client random.
11402 [Edward Bishop <ebishop@spyglass.com>]