5 Changes between 1.0.2 and 1.1.0 [xx XXX xxxx]
7 *) RAND_pseudo_bytes has been deprecated. Users should use RAND bytes instead.
9 *) Added support for TLS extended master secret from
10 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
11 initial patch which was a great help during development.
14 *) All libssl internal structures have been removed from the public header
15 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
16 now redundant). Users should not attempt to access internal structures
17 directly. Instead they should use the provided API functions.
20 *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
21 Access to deprecated functions can be re-enabled by running config with
22 "enable-deprecated". In addition applications wishing to use deprecated
23 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
24 will, by default, disable some transitive includes that previously existed
25 in the header files (e.g. ec.h will no longer, by default, include bn.h)
28 *) Added support for OCB mode. OpenSSL has been granted a patent license
29 compatible with the OpenSSL license for use of OCB. Details are available
30 at https://www.openssl.org/docs/misc/OCB-patent-grant-OpenSSL.pdf. Support
31 for OCB can be removed by calling config with no-ocb.
34 *) SSLv2 support has been removed. It still supports receiving a SSLv2
35 compatible client hello.
38 *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
39 done while fixing the error code for the key-too-small case.
40 [Annie Yousar <a.yousar@informatik.hu-berlin.de>]
42 *) Removed old DES API.
45 *) Remove various unsupported platforms:
51 Sinix/ReliantUNIX RM400
56 16-bit platforms such as WIN16
59 *) Clean up OPENSSL_NO_xxx #define's
60 Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
61 Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
62 OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
63 OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
64 OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
65 Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
66 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
67 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
68 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
69 Remove MS_STATIC; it's a relic from platforms <32 bits.
72 *) Cleaned up dead code
73 Remove all but one '#ifdef undef' which is to be looked at.
76 *) Clean up calling of xxx_free routines.
77 Just like free(), fix most of the xxx_free routines to accept
78 NULL. Remove the non-null checks from callers. Save much code.
81 *) Experimental support for a new, fast, unbiased prime candidate generator,
82 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
83 [Felix Laurie von Massenbach <felix@erbridge.co.uk>]
85 *) New output format NSS in the sess_id command line tool. This allows
86 exporting the session id and the master key in NSS keylog format.
87 [Martin Kaiser <martin@kaiser.cx>]
89 *) Harmonize version and its documentation. -f flag is used to display
91 [mancha <mancha1@zoho.com>]
93 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
95 [mancha <mancha1@zoho.com>]
97 *) Fix some double frees. These are not thought to be exploitable.
98 [mancha <mancha1@zoho.com>]
100 *) A missing bounds check in the handling of the TLS heartbeat extension
101 can be used to reveal up to 64k of memory to a connected client or
104 Thanks for Neel Mehta of Google Security for discovering this bug and to
105 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
106 preparing the fix (CVE-2014-0160)
107 [Adam Langley, Bodo Moeller]
109 *) Fix for the attack described in the paper "Recovering OpenSSL
110 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
111 by Yuval Yarom and Naomi Benger. Details can be obtained from:
112 http://eprint.iacr.org/2014/140
114 Thanks to Yuval Yarom and Naomi Benger for discovering this
115 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
116 [Yuval Yarom and Naomi Benger]
118 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
119 this fixes a limitation in previous versions of OpenSSL.
122 *) Experimental encrypt-then-mac support.
124 Experimental support for encrypt then mac from
125 draft-gutmann-tls-encrypt-then-mac-02.txt
127 To enable it set the appropriate extension number (0x42 for the test
128 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
130 For non-compliant peers (i.e. just about everything) this should have no
133 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
137 *) Add EVP support for key wrapping algorithms, to avoid problems with
138 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
139 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
140 algorithms and include tests cases.
143 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
147 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
148 MGF1 digest and OAEP label.
151 *) Make openssl verify return errors.
152 [Chris Palmer <palmer@google.com> and Ben Laurie]
154 *) New function ASN1_TIME_diff to calculate the difference between two
155 ASN1_TIME structures or one structure and the current time.
158 *) Update fips_test_suite to support multiple command line options. New
159 test to induce all self test errors in sequence and check expected
163 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
164 sign or verify all in one operation.
167 *) Add fips_algvs: a multicall fips utility incorporating all the algorithm
168 test programs and fips_test_suite. Includes functionality to parse
169 the minimal script output of fipsalgest.pl directly.
172 *) Add authorisation parameter to FIPS_module_mode_set().
175 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
178 *) Use separate DRBG fields for internal and external flags. New function
179 FIPS_drbg_health_check() to perform on demand health checking. Add
180 generation tests to fips_test_suite with reduced health check interval to
181 demonstrate periodic health checking. Add "nodh" option to
182 fips_test_suite to skip very slow DH test.
185 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
189 *) More extensive health check for DRBG checking many more failure modes.
190 New function FIPS_selftest_drbg_all() to handle every possible DRBG
191 combination: call this in fips_test_suite.
194 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
195 and POST to handle Dual EC cases.
198 *) Add support for canonical generation of DSA parameter 'g'. See
201 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
202 POST to handle HMAC cases.
205 *) Add functions FIPS_module_version() and FIPS_module_version_text()
206 to return numerical and string versions of the FIPS module number.
209 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
210 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
211 outside the validated module in the FIPS capable OpenSSL.
214 *) Minor change to DRBG entropy callback semantics. In some cases
215 there is no multiple of the block length between min_len and
216 max_len. Allow the callback to return more than max_len bytes
217 of entropy but discard any extra: it is the callback's responsibility
218 to ensure that the extra data discarded does not impact the
219 requested amount of entropy.
222 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
223 information in FIPS186-3, SP800-57 and SP800-131A.
226 *) CCM support via EVP. Interface is very similar to GCM case except we
227 must supply all data in one chunk (i.e. no update, final) and the
228 message length must be supplied if AAD is used. Add algorithm test
232 *) Initial version of POST overhaul. Add POST callback to allow the status
233 of POST to be monitored and/or failures induced. Modify fips_test_suite
234 to use callback. Always run all selftests even if one fails.
237 *) XTS support including algorithm test driver in the fips_gcmtest program.
238 Note: this does increase the maximum key length from 32 to 64 bytes but
239 there should be no binary compatibility issues as existing applications
240 will never use XTS mode.
243 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
244 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
245 performs algorithm blocking for unapproved PRNG types. Also do not
246 set PRNG type in FIPS_mode_set(): leave this to the application.
247 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
248 the standard OpenSSL PRNG: set additional data to a date time vector.
251 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
252 This shouldn't present any incompatibility problems because applications
253 shouldn't be using these directly and any that are will need to rethink
254 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
257 *) Extensive self tests and health checking required by SP800-90 DRBG.
258 Remove strength parameter from FIPS_drbg_instantiate and always
259 instantiate at maximum supported strength.
262 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
265 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
268 *) New function DH_compute_key_padded() to compute a DH key and pad with
269 leading zeroes if needed: this complies with SP800-56A et al.
272 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
273 anything, incomplete, subject to change and largely untested at present.
276 *) Modify fipscanisteronly build option to only build the necessary object
277 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
280 *) Add experimental option FIPSSYMS to give all symbols in
281 fipscanister.o and FIPS or fips prefix. This will avoid
282 conflicts with future versions of OpenSSL. Add perl script
283 util/fipsas.pl to preprocess assembly language source files
284 and rename any affected symbols.
287 *) Add selftest checks and algorithm block of non-fips algorithms in
288 FIPS mode. Remove DES2 from selftests.
291 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
292 return internal method without any ENGINE dependencies. Add new
293 tiny fips sign and verify functions.
296 *) New build option no-ec2m to disable characteristic 2 code.
299 *) New build option "fipscanisteronly". This only builds fipscanister.o
300 and (currently) associated fips utilities. Uses the file Makefile.fips
301 instead of Makefile.org as the prototype.
304 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
305 Update fips_gcmtest to use IV generator.
308 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
309 setting output buffer to NULL. The *Final function must be
310 called although it will not retrieve any additional data. The tag
311 can be set or retrieved with a ctrl. The IV length is by default 12
312 bytes (96 bits) but can be set to an alternative value. If the IV
313 length exceeds the maximum IV length (currently 16 bytes) it cannot be
317 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
318 underlying do_cipher function handles all cipher semantics itself
319 including padding and finalisation. This is useful if (for example)
320 an ENGINE cipher handles block padding itself. The behaviour of
321 do_cipher is subtly changed if this flag is set: the return value
322 is the number of characters written to the output buffer (zero is
323 no longer an error code) or a negative error code. Also if the
324 input buffer is NULL and length 0 finalisation should be performed.
327 *) If a candidate issuer certificate is already part of the constructed
328 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
331 *) Improve forward-security support: add functions
333 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
334 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
336 for use by SSL/TLS servers; the callback function will be called whenever a
337 new session is created, and gets to decide whether the session may be
338 cached to make it resumable (return 0) or not (return 1). (As by the
339 SSL/TLS protocol specifications, the session_id sent by the server will be
340 empty to indicate that the session is not resumable; also, the server will
341 not generate RFC 4507 (RFC 5077) session tickets.)
343 A simple reasonable callback implementation is to return is_forward_secure.
344 This parameter will be set to 1 or 0 depending on the ciphersuite selected
345 by the SSL/TLS server library, indicating whether it can provide forward
347 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
349 *) New -verify_name option in command line utilities to set verification
353 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
354 Add CMAC pkey methods.
357 *) Experimental renegotiation in s_server -www mode. If the client
358 browses /reneg connection is renegotiated. If /renegcert it is
359 renegotiated requesting a certificate.
362 *) Add an "external" session cache for debugging purposes to s_server. This
363 should help trace issues which normally are only apparent in deployed
364 multi-process servers.
367 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
368 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
369 BIO_set_cipher() and some obscure PEM functions were changed so they
370 can now return an error. The RAND changes required a change to the
371 RAND_METHOD structure.
374 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
375 a gcc attribute to warn if the result of a function is ignored. This
376 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
377 whose return value is often ignored.
380 Changes between 1.0.2 and 1.0.2a [xx XXX xxxx]
382 *) ClientHello sigalgs DoS fix
384 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
385 invalid signature algorithms extension a NULL pointer dereference will
386 occur. This can be exploited in a DoS attack against the server.
388 This issue was was reported to OpenSSL by David Ramos of Stanford
391 [Stephen Henson and Matt Caswell]
393 *) Multiblock corrupted pointer fix
395 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
396 feature only applies on 64 bit x86 architecture platforms that support AES
397 NI instructions. A defect in the implementation of "multiblock" can cause
398 OpenSSL's internal write buffer to become incorrectly set to NULL when
399 using non-blocking IO. Typically, when the user application is using a
400 socket BIO for writing, this will only result in a failed connection.
401 However if some other BIO is used then it is likely that a segmentation
402 fault will be triggered, thus enabling a potential DoS attack.
404 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
408 *) Segmentation fault in DTLSv1_listen fix
410 The DTLSv1_listen function is intended to be stateless and processes the
411 initial ClientHello from many peers. It is common for user code to loop
412 over the call to DTLSv1_listen until a valid ClientHello is received with
413 an associated cookie. A defect in the implementation of DTLSv1_listen means
414 that state is preserved in the SSL object from one invocation to the next
415 that can lead to a segmentation fault. Errors processing the initial
416 ClientHello can trigger this scenario. An example of such an error could be
417 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
420 This issue was reported to OpenSSL by Per Allansson.
424 *) Segmentation fault in ASN1_TYPE_cmp fix
426 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
427 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
428 certificate signature algorithm consistency this can be used to crash any
429 certificate verification operation and exploited in a DoS attack. Any
430 application which performs certificate verification is vulnerable including
431 OpenSSL clients and servers which enable client authentication.
435 *) Segmentation fault for invalid PSS parameters fix
437 The signature verification routines will crash with a NULL pointer
438 dereference if presented with an ASN.1 signature using the RSA PSS
439 algorithm and invalid parameters. Since these routines are used to verify
440 certificate signature algorithms this can be used to crash any
441 certificate verification operation and exploited in a DoS attack. Any
442 application which performs certificate verification is vulnerable including
443 OpenSSL clients and servers which enable client authentication.
445 This issue was was reported to OpenSSL by Brian Carpenter.
449 *) ASN.1 structure reuse memory corruption fix
451 Reusing a structure in ASN.1 parsing may allow an attacker to cause
452 memory corruption via an invalid write. Such reuse is and has been
453 strongly discouraged and is believed to be rare.
455 Applications that parse structures containing CHOICE or ANY DEFINED BY
456 components may be affected. Certificate parsing (d2i_X509 and related
457 functions) are however not affected. OpenSSL clients and servers are
462 *) PKCS7 NULL pointer dereferences fix
464 The PKCS#7 parsing code does not handle missing outer ContentInfo
465 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
466 missing content and trigger a NULL pointer dereference on parsing.
468 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
469 otherwise parse PKCS#7 structures from untrusted sources are
470 affected. OpenSSL clients and servers are not affected.
472 This issue was reported to OpenSSL by Michal Zalewski (Google).
476 *) DoS via reachable assert in SSLv2 servers fix
478 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
479 servers that both support SSLv2 and enable export cipher suites by sending
480 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
482 This issue was discovered by Sean Burford (Google) and Emilia Käsper
483 (OpenSSL development team).
487 *) Empty CKE with client auth and DHE fix
489 If client auth is used then a server can seg fault in the event of a DHE
490 ciphersuite being selected and a zero length ClientKeyExchange message
491 being sent by the client. This could be exploited in a DoS attack.
495 *) Handshake with unseeded PRNG fix
497 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
498 with an unseeded PRNG. The conditions are:
499 - The client is on a platform where the PRNG has not been seeded
500 automatically, and the user has not seeded manually
501 - A protocol specific client method version has been used (i.e. not
502 SSL_client_methodv23)
503 - A ciphersuite is used that does not require additional random data from
504 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
506 If the handshake succeeds then the client random that has been used will
507 have been generated from a PRNG with insufficient entropy and therefore the
508 output may be predictable.
510 For example using the following command with an unseeded openssl will
511 succeed on an unpatched platform:
513 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
517 *) Use After Free following d2i_ECPrivatekey error fix
519 A malformed EC private key file consumed via the d2i_ECPrivateKey function
520 could cause a use after free condition. This, in turn, could cause a double
521 free in several private key parsing functions (such as d2i_PrivateKey
522 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
523 for applications that receive EC private keys from untrusted
524 sources. This scenario is considered rare.
526 This issue was discovered by the BoringSSL project and fixed in their
531 *) X509_to_X509_REQ NULL pointer deref fix
533 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
534 the certificate key is invalid. This function is rarely used in practice.
536 This issue was discovered by Brian Carpenter.
540 *) Removed the export ciphers from the DEFAULT ciphers
543 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
545 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
546 ARMv5 through ARMv8, as opposite to "locking" it to single one.
547 So far those who have to target multiple plaforms would compromise
548 and argue that binary targeting say ARMv5 would still execute on
549 ARMv8. "Universal" build resolves this compromise by providing
550 near-optimal performance even on newer platforms.
553 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
554 (other platforms pending).
555 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
557 *) Add support for the SignedCertificateTimestampList certificate and
558 OCSP response extensions from RFC6962.
561 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
562 for corner cases. (Certain input points at infinity could lead to
563 bogus results, with non-infinity inputs mapped to infinity too.)
566 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
567 This covers AES, SHA256/512 and GHASH. "Initial" means that most
568 common cases are optimized and there still is room for further
569 improvements. Vector Permutation AES for Altivec is also added.
572 *) Add support for little-endian ppc64 Linux target.
573 [Marcelo Cerri (IBM)]
575 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
576 SHA1, SHA256 and GHASH. "Initial" means that most common cases
577 are optimized and there still is room for further improvements.
578 Both 32- and 64-bit modes are supported.
579 [Andy Polyakov, Ard Biesheuvel (Linaro)]
581 *) Improved ARMv7 NEON support.
584 *) Support for SPARC Architecture 2011 crypto extensions, first
585 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
586 SHA256/512, MD5, GHASH and modular exponentiation.
587 [Andy Polyakov, David Miller]
589 *) Accelerated modular exponentiation for Intel processors, a.k.a.
591 [Shay Gueron & Vlad Krasnov (Intel Corp)]
593 *) Support for new and upcoming Intel processors, including AVX2,
594 BMI and SHA ISA extensions. This includes additional "stitched"
595 implementations, AESNI-SHA256 and GCM, and multi-buffer support
598 This work was sponsored by Intel Corp.
601 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
602 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
603 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
606 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
607 this fixes a limiation in previous versions of OpenSSL.
610 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
611 MGF1 digest and OAEP label.
614 *) Add EVP support for key wrapping algorithms, to avoid problems with
615 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
616 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
617 algorithms and include tests cases.
620 *) Add functions to allocate and set the fields of an ECDSA_METHOD
622 [Douglas E. Engert, Steve Henson]
624 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
625 difference in days and seconds between two tm or ASN1_TIME structures.
628 *) Add -rev test option to s_server to just reverse order of characters
629 received by client and send back to server. Also prints an abbreviated
630 summary of the connection parameters.
633 *) New option -brief for s_client and s_server to print out a brief summary
634 of connection parameters.
637 *) Add callbacks for arbitrary TLS extensions.
638 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
640 *) New option -crl_download in several openssl utilities to download CRLs
641 from CRLDP extension in certificates.
644 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
647 *) New function X509_CRL_diff to generate a delta CRL from the difference
648 of two full CRLs. Add support to "crl" utility.
651 *) New functions to set lookup_crls function and to retrieve
652 X509_STORE from X509_STORE_CTX.
655 *) Print out deprecated issuer and subject unique ID fields in
659 *) Extend OCSP I/O functions so they can be used for simple general purpose
660 HTTP as well as OCSP. New wrapper function which can be used to download
661 CRLs using the OCSP API.
664 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
667 *) SSL_CONF* functions. These provide a common framework for application
668 configuration using configuration files or command lines.
671 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
672 message callback and prints the results. Needs compile time option
673 "enable-ssl-trace". New options to s_client and s_server to enable
677 *) New ctrl and macro to retrieve supported points extensions.
678 Print out extension in s_server and s_client.
681 *) New functions to retrieve certificate signature and signature
685 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
689 *) New Suite B modes for TLS code. These use and enforce the requirements
690 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
691 only use Suite B curves. The Suite B modes can be set by using the
692 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
695 *) New chain verification flags for Suite B levels of security. Check
696 algorithms are acceptable when flags are set in X509_verify_cert.
699 *) Make tls1_check_chain return a set of flags indicating checks passed
700 by a certificate chain. Add additional tests to handle client
701 certificates: checks for matching certificate type and issuer name
705 *) If an attempt is made to use a signature algorithm not in the peer
706 preference list abort the handshake. If client has no suitable
707 signature algorithms in response to a certificate request do not
711 *) If server EC tmp key is not in client preference list abort handshake.
714 *) Add support for certificate stores in CERT structure. This makes it
715 possible to have different stores per SSL structure or one store in
716 the parent SSL_CTX. Include distint stores for certificate chain
717 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
718 to build and store a certificate chain in CERT structure: returing
719 an error if the chain cannot be built: this will allow applications
720 to test if a chain is correctly configured.
722 Note: if the CERT based stores are not set then the parent SSL_CTX
723 store is used to retain compatibility with existing behaviour.
727 *) New function ssl_set_client_disabled to set a ciphersuite disabled
728 mask based on the current session, check mask when sending client
729 hello and checking the requested ciphersuite.
732 *) New ctrls to retrieve and set certificate types in a certificate
733 request message. Print out received values in s_client. If certificate
734 types is not set with custom values set sensible values based on
735 supported signature algorithms.
738 *) Support for distinct client and server supported signature algorithms.
741 *) Add certificate callback. If set this is called whenever a certificate
742 is required by client or server. An application can decide which
743 certificate chain to present based on arbitrary criteria: for example
744 supported signature algorithms. Add very simple example to s_server.
745 This fixes many of the problems and restrictions of the existing client
746 certificate callback: for example you can now clear an existing
747 certificate and specify the whole chain.
750 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
751 the certificate can be used for (if anything). Set valid_flags field
752 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
753 to have similar checks in it.
755 Add new "cert_flags" field to CERT structure and include a "strict mode".
756 This enforces some TLS certificate requirements (such as only permitting
757 certificate signature algorithms contained in the supported algorithms
758 extension) which some implementations ignore: this option should be used
759 with caution as it could cause interoperability issues.
762 *) Update and tidy signature algorithm extension processing. Work out
763 shared signature algorithms based on preferences and peer algorithms
764 and print them out in s_client and s_server. Abort handshake if no
765 shared signature algorithms.
768 *) Add new functions to allow customised supported signature algorithms
769 for SSL and SSL_CTX structures. Add options to s_client and s_server
773 *) New function SSL_certs_clear() to delete all references to certificates
774 from an SSL structure. Before this once a certificate had been added
775 it couldn't be removed.
778 *) Integrate hostname, email address and IP address checking with certificate
779 verification. New verify options supporting checking in opensl utility.
782 *) Fixes and wildcard matching support to hostname and email checking
783 functions. Add manual page.
784 [Florian Weimer (Red Hat Product Security Team)]
786 *) New functions to check a hostname email or IP address against a
787 certificate. Add options x509 utility to print results of checks against
791 *) Fix OCSP checking.
792 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
794 *) Initial experimental support for explicitly trusted non-root CAs.
795 OpenSSL still tries to build a complete chain to a root but if an
796 intermediate CA has a trust setting included that is used. The first
797 setting is used: whether to trust (e.g., -addtrust option to the x509
801 *) Add -trusted_first option which attempts to find certificates in the
802 trusted store even if an untrusted chain is also supplied.
805 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
806 platform support for Linux and Android.
809 *) Support for linux-x32, ILP32 environment in x86_64 framework.
812 *) Experimental multi-implementation support for FIPS capable OpenSSL.
813 When in FIPS mode the approved implementations are used as normal,
814 when not in FIPS mode the internal unapproved versions are used instead.
815 This means that the FIPS capable OpenSSL isn't forced to use the
816 (often lower performance) FIPS implementations outside FIPS mode.
819 *) Transparently support X9.42 DH parameters when calling
820 PEM_read_bio_DHparameters. This means existing applications can handle
821 the new parameter format automatically.
824 *) Initial experimental support for X9.42 DH parameter format: mainly
825 to support use of 'q' parameter for RFC5114 parameters.
828 *) Add DH parameters from RFC5114 including test data to dhtest.
831 *) Support for automatic EC temporary key parameter selection. If enabled
832 the most preferred EC parameters are automatically used instead of
833 hardcoded fixed parameters. Now a server just has to call:
834 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
835 support ECDH and use the most appropriate parameters.
838 *) Enhance and tidy EC curve and point format TLS extension code. Use
839 static structures instead of allocation if default values are used.
840 New ctrls to set curves we wish to support and to retrieve shared curves.
841 Print out shared curves in s_server. New options to s_server and s_client
842 to set list of supported curves.
845 *) New ctrls to retrieve supported signature algorithms and
846 supported curve values as an array of NIDs. Extend openssl utility
847 to print out received values.
850 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
851 between NIDs and the more common NIST names such as "P-256". Enhance
852 ecparam utility and ECC method to recognise the NIST names for curves.
855 *) Enhance SSL/TLS certificate chain handling to support different
856 chains for each certificate instead of one chain in the parent SSL_CTX.
859 *) Support for fixed DH ciphersuite client authentication: where both
860 server and client use DH certificates with common parameters.
863 *) Support for fixed DH ciphersuites: those requiring DH server
867 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
869 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
870 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
871 X509_CINF_get_signature were reverted post internal team review.
873 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
875 *) Build fixes for the Windows and OpenVMS platforms
876 [Matt Caswell and Richard Levitte]
878 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
880 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
881 message can cause a segmentation fault in OpenSSL due to a NULL pointer
882 dereference. This could lead to a Denial Of Service attack. Thanks to
883 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
887 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
888 dtls1_buffer_record function under certain conditions. In particular this
889 could occur if an attacker sent repeated DTLS records with the same
890 sequence number but for the next epoch. The memory leak could be exploited
891 by an attacker in a Denial of Service attack through memory exhaustion.
892 Thanks to Chris Mueller for reporting this issue.
896 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
897 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
898 method would be set to NULL which could later result in a NULL pointer
899 dereference. Thanks to Frank Schmirler for reporting this issue.
903 *) Abort handshake if server key exchange message is omitted for ephemeral
906 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
907 reporting this issue.
911 *) Remove non-export ephemeral RSA code on client and server. This code
912 violated the TLS standard by allowing the use of temporary RSA keys in
913 non-export ciphersuites and could be used by a server to effectively
914 downgrade the RSA key length used to a value smaller than the server
915 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
916 INRIA or reporting this issue.
920 *) Fixed issue where DH client certificates are accepted without verification.
921 An OpenSSL server will accept a DH certificate for client authentication
922 without the certificate verify message. This effectively allows a client to
923 authenticate without the use of a private key. This only affects servers
924 which trust a client certificate authority which issues certificates
925 containing DH keys: these are extremely rare and hardly ever encountered.
926 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
931 *) Ensure that the session ID context of an SSL is updated when its
932 SSL_CTX is updated via SSL_set_SSL_CTX.
934 The session ID context is typically set from the parent SSL_CTX,
935 and can vary with the CTX.
938 *) Fix various certificate fingerprint issues.
940 By using non-DER or invalid encodings outside the signed portion of a
941 certificate the fingerprint can be changed without breaking the signature.
942 Although no details of the signed portion of the certificate can be changed
943 this can cause problems with some applications: e.g. those using the
944 certificate fingerprint for blacklists.
946 1. Reject signatures with non zero unused bits.
948 If the BIT STRING containing the signature has non zero unused bits reject
949 the signature. All current signature algorithms require zero unused bits.
951 2. Check certificate algorithm consistency.
953 Check the AlgorithmIdentifier inside TBS matches the one in the
954 certificate signature. NB: this will result in signature failure
955 errors for some broken certificates.
957 Thanks to Konrad Kraszewski from Google for reporting this issue.
959 3. Check DSA/ECDSA signatures use DER.
961 Reencode DSA/ECDSA signatures and compare with the original received
962 signature. Return an error if there is a mismatch.
964 This will reject various cases including garbage after signature
965 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
966 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
967 (negative or with leading zeroes).
969 Further analysis was conducted and fixes were developed by Stephen Henson
970 of the OpenSSL core team.
975 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
976 results on some platforms, including x86_64. This bug occurs at random
977 with a very low probability, and is not known to be exploitable in any
978 way, though its exact impact is difficult to determine. Thanks to Pieter
979 Wuille (Blockstream) who reported this issue and also suggested an initial
980 fix. Further analysis was conducted by the OpenSSL development team and
981 Adam Langley of Google. The final fix was developed by Andy Polyakov of
982 the OpenSSL core team.
986 *) Do not resume sessions on the server if the negotiated protocol
987 version does not match the session's version. Resuming with a different
988 version, while not strictly forbidden by the RFC, is of questionable
989 sanity and breaks all known clients.
990 [David Benjamin, Emilia Käsper]
992 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
993 early CCS messages during renegotiation. (Note that because
994 renegotiation is encrypted, this early CCS was not exploitable.)
997 *) Tighten client-side session ticket handling during renegotiation:
998 ensure that the client only accepts a session ticket if the server sends
999 the extension anew in the ServerHello. Previously, a TLS client would
1000 reuse the old extension state and thus accept a session ticket if one was
1001 announced in the initial ServerHello.
1003 Similarly, ensure that the client requires a session ticket if one
1004 was advertised in the ServerHello. Previously, a TLS client would
1005 ignore a missing NewSessionTicket message.
1008 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
1010 *) SRTP Memory Leak.
1012 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
1013 sends a carefully crafted handshake message, to cause OpenSSL to fail
1014 to free up to 64k of memory causing a memory leak. This could be
1015 exploited in a Denial Of Service attack. This issue affects OpenSSL
1016 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
1017 whether SRTP is used or configured. Implementations of OpenSSL that
1018 have been compiled with OPENSSL_NO_SRTP defined are not affected.
1020 The fix was developed by the OpenSSL team.
1024 *) Session Ticket Memory Leak.
1026 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
1027 integrity of that ticket is first verified. In the event of a session
1028 ticket integrity check failing, OpenSSL will fail to free memory
1029 causing a memory leak. By sending a large number of invalid session
1030 tickets an attacker could exploit this issue in a Denial Of Service
1035 *) Build option no-ssl3 is incomplete.
1037 When OpenSSL is configured with "no-ssl3" as a build option, servers
1038 could accept and complete a SSL 3.0 handshake, and clients could be
1039 configured to send them.
1041 [Akamai and the OpenSSL team]
1043 *) Add support for TLS_FALLBACK_SCSV.
1044 Client applications doing fallback retries should call
1045 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
1047 [Adam Langley, Bodo Moeller]
1049 *) Add additional DigestInfo checks.
1051 Reencode DigestInto in DER and check against the original when
1052 verifying RSA signature: this will reject any improperly encoded
1053 DigestInfo structures.
1055 Note: this is a precautionary measure and no attacks are currently known.
1059 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
1061 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
1062 SRP code can be overrun an internal buffer. Add sanity check that
1063 g, A, B < N to SRP code.
1065 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
1066 Group for discovering this issue.
1070 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
1071 TLS 1.0 instead of higher protocol versions when the ClientHello message
1072 is badly fragmented. This allows a man-in-the-middle attacker to force a
1073 downgrade to TLS 1.0 even if both the server and the client support a
1074 higher protocol version, by modifying the client's TLS records.
1076 Thanks to David Benjamin and Adam Langley (Google) for discovering and
1077 researching this issue.
1081 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
1082 to a denial of service attack. A malicious server can crash the client
1083 with a null pointer dereference (read) by specifying an anonymous (EC)DH
1084 ciphersuite and sending carefully crafted handshake messages.
1086 Thanks to Felix Gröbert (Google) for discovering and researching this
1091 *) By sending carefully crafted DTLS packets an attacker could cause openssl
1092 to leak memory. This can be exploited through a Denial of Service attack.
1093 Thanks to Adam Langley for discovering and researching this issue.
1097 *) An attacker can force openssl to consume large amounts of memory whilst
1098 processing DTLS handshake messages. This can be exploited through a
1099 Denial of Service attack.
1100 Thanks to Adam Langley for discovering and researching this issue.
1104 *) An attacker can force an error condition which causes openssl to crash
1105 whilst processing DTLS packets due to memory being freed twice. This
1106 can be exploited through a Denial of Service attack.
1107 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
1112 *) If a multithreaded client connects to a malicious server using a resumed
1113 session and the server sends an ec point format extension it could write
1114 up to 255 bytes to freed memory.
1116 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
1121 *) A malicious server can crash an OpenSSL client with a null pointer
1122 dereference (read) by specifying an SRP ciphersuite even though it was not
1123 properly negotiated with the client. This can be exploited through a
1124 Denial of Service attack.
1126 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
1127 discovering and researching this issue.
1131 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
1132 X509_name_oneline, X509_name_print_ex et al. to leak some information
1133 from the stack. Applications may be affected if they echo pretty printing
1134 output to the attacker.
1136 Thanks to Ivan Fratric (Google) for discovering this issue.
1138 [Emilia Käsper, and Steve Henson]
1140 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
1141 for corner cases. (Certain input points at infinity could lead to
1142 bogus results, with non-infinity inputs mapped to infinity too.)
1145 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
1147 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
1148 handshake can force the use of weak keying material in OpenSSL
1149 SSL/TLS clients and servers.
1151 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
1152 researching this issue. (CVE-2014-0224)
1153 [KIKUCHI Masashi, Steve Henson]
1155 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
1156 OpenSSL DTLS client the code can be made to recurse eventually crashing
1159 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
1161 [Imre Rad, Steve Henson]
1163 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
1164 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
1165 client or server. This is potentially exploitable to run arbitrary
1166 code on a vulnerable client or server.
1168 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
1169 [Jüri Aedla, Steve Henson]
1171 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
1172 are subject to a denial of service attack.
1174 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
1175 this issue. (CVE-2014-3470)
1176 [Felix Gröbert, Ivan Fratric, Steve Henson]
1178 *) Harmonize version and its documentation. -f flag is used to display
1180 [mancha <mancha1@zoho.com>]
1182 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
1183 in i2d_ECPrivateKey.
1184 [mancha <mancha1@zoho.com>]
1186 *) Fix some double frees. These are not thought to be exploitable.
1187 [mancha <mancha1@zoho.com>]
1189 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
1191 *) A missing bounds check in the handling of the TLS heartbeat extension
1192 can be used to reveal up to 64k of memory to a connected client or
1195 Thanks for Neel Mehta of Google Security for discovering this bug and to
1196 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
1197 preparing the fix (CVE-2014-0160)
1198 [Adam Langley, Bodo Moeller]
1200 *) Fix for the attack described in the paper "Recovering OpenSSL
1201 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
1202 by Yuval Yarom and Naomi Benger. Details can be obtained from:
1203 http://eprint.iacr.org/2014/140
1205 Thanks to Yuval Yarom and Naomi Benger for discovering this
1206 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
1207 [Yuval Yarom and Naomi Benger]
1209 *) TLS pad extension: draft-agl-tls-padding-03
1211 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
1212 TLS client Hello record length value would otherwise be > 255 and
1213 less that 512 pad with a dummy extension containing zeroes so it
1214 is at least 512 bytes long.
1216 [Adam Langley, Steve Henson]
1218 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
1220 *) Fix for TLS record tampering bug. A carefully crafted invalid
1221 handshake could crash OpenSSL with a NULL pointer exception.
1222 Thanks to Anton Johansson for reporting this issues.
1225 *) Keep original DTLS digest and encryption contexts in retransmission
1226 structures so we can use the previous session parameters if they need
1227 to be resent. (CVE-2013-6450)
1230 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
1231 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
1232 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
1233 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
1234 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
1235 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
1236 [Rob Stradling, Adam Langley]
1238 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
1240 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
1241 supporting platforms or when small records were transferred.
1242 [Andy Polyakov, Steve Henson]
1244 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
1246 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
1248 This addresses the flaw in CBC record processing discovered by
1249 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
1250 at: http://www.isg.rhul.ac.uk/tls/
1252 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1253 Security Group at Royal Holloway, University of London
1254 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
1255 Emilia Käsper for the initial patch.
1257 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
1259 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
1260 ciphersuites which can be exploited in a denial of service attack.
1261 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
1262 and detecting this bug and to Wolfgang Ettlinger
1263 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
1267 *) Return an error when checking OCSP signatures when key is NULL.
1268 This fixes a DoS attack. (CVE-2013-0166)
1271 *) Make openssl verify return errors.
1272 [Chris Palmer <palmer@google.com> and Ben Laurie]
1274 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
1275 the right response is stapled. Also change SSL_get_certificate()
1276 so it returns the certificate actually sent.
1277 See http://rt.openssl.org/Ticket/Display.html?id=2836.
1278 [Rob Stradling <rob.stradling@comodo.com>]
1280 *) Fix possible deadlock when decoding public keys.
1283 *) Don't use TLS 1.0 record version number in initial client hello
1287 Changes between 1.0.1b and 1.0.1c [10 May 2012]
1289 *) Sanity check record length before skipping explicit IV in TLS
1290 1.2, 1.1 and DTLS to fix DoS attack.
1292 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
1293 fuzzing as a service testing platform.
1297 *) Initialise tkeylen properly when encrypting CMS messages.
1298 Thanks to Solar Designer of Openwall for reporting this issue.
1301 *) In FIPS mode don't try to use composite ciphers as they are not
1305 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
1307 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
1308 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
1309 mean any application compiled against OpenSSL 1.0.0 headers setting
1310 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng
1311 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
1312 0x10000000L Any application which was previously compiled against
1313 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
1314 will need to be recompiled as a result. Letting be results in
1315 inability to disable specifically TLS 1.1 and in client context,
1316 in unlike event, limit maximum offered version to TLS 1.0 [see below].
1319 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not
1320 disable just protocol X, but all protocols above X *if* there are
1321 protocols *below* X still enabled. In more practical terms it means
1322 that if application wants to disable TLS1.0 in favor of TLS1.1 and
1323 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
1324 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
1328 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
1330 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
1331 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
1332 in CRYPTO_realloc_clean.
1334 Thanks to Tavis Ormandy, Google Security Team, for discovering this
1335 issue and to Adam Langley <agl@chromium.org> for fixing it.
1337 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
1339 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
1342 *) Workarounds for some broken servers that "hang" if a client hello
1343 record length exceeds 255 bytes.
1345 1. Do not use record version number > TLS 1.0 in initial client
1346 hello: some (but not all) hanging servers will now work.
1347 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
1348 the number of ciphers sent in the client hello. This should be
1349 set to an even number, such as 50, for example by passing:
1350 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
1351 Most broken servers should now work.
1352 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
1353 TLS 1.2 client support entirely.
1356 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
1359 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
1361 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
1362 STRING form instead of a DigestInfo.
1365 *) The format used for MDC2 RSA signatures is inconsistent between EVP
1366 and the RSA_sign/RSA_verify functions. This was made more apparent when
1367 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
1368 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
1369 the correct format in RSA_verify so both forms transparently work.
1372 *) Some servers which support TLS 1.0 can choke if we initially indicate
1373 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
1374 encrypted premaster secret. As a workaround use the maximum permitted
1375 client version in client hello, this should keep such servers happy
1376 and still work with previous versions of OpenSSL.
1379 *) Add support for TLS/DTLS heartbeats.
1380 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1382 *) Add support for SCTP.
1383 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1385 *) Improved PRNG seeding for VOS.
1386 [Paul Green <Paul.Green@stratus.com>]
1388 *) Extensive assembler packs updates, most notably:
1390 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
1391 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
1392 - x86_64: bit-sliced AES implementation;
1393 - ARM: NEON support, contemporary platforms optimizations;
1394 - s390x: z196 support;
1395 - *: GHASH and GF(2^m) multiplication implementations;
1399 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
1400 (removal of unnecessary code)
1401 [Peter Sylvester <peter.sylvester@edelweb.fr>]
1403 *) Add TLS key material exporter from RFC 5705.
1406 *) Add DTLS-SRTP negotiation from RFC 5764.
1409 *) Add Next Protocol Negotiation,
1410 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
1411 disabled with a no-npn flag to config or Configure. Code donated
1413 [Adam Langley <agl@google.com> and Ben Laurie]
1415 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
1416 NIST-P256, NIST-P521, with constant-time single point multiplication on
1417 typical inputs. Compiler support for the nonstandard type __uint128_t is
1418 required to use this (present in gcc 4.4 and later, for 64-bit builds).
1419 Code made available under Apache License version 2.0.
1421 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
1422 line to include this in your build of OpenSSL, and run "make depend" (or
1423 "make update"). This enables the following EC_METHODs:
1425 EC_GFp_nistp224_method()
1426 EC_GFp_nistp256_method()
1427 EC_GFp_nistp521_method()
1429 EC_GROUP_new_by_curve_name() will automatically use these (while
1430 EC_GROUP_new_curve_GFp() currently prefers the more flexible
1432 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
1434 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
1435 all platforms. Move ssize_t definition from e_os.h to the public
1436 header file e_os2.h as it now appears in public header file cms.h
1439 *) New -sigopt option to the ca, req and x509 utilities. Additional
1440 signature parameters can be passed using this option and in
1444 *) Add RSA PSS signing function. This will generate and set the
1445 appropriate AlgorithmIdentifiers for PSS based on those in the
1446 corresponding EVP_MD_CTX structure. No application support yet.
1449 *) Support for companion algorithm specific ASN1 signing routines.
1450 New function ASN1_item_sign_ctx() signs a pre-initialised
1451 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
1452 the appropriate parameters.
1455 *) Add new algorithm specific ASN1 verification initialisation function
1456 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
1457 handling will be the same no matter what EVP_PKEY_METHOD is used.
1458 Add a PSS handler to support verification of PSS signatures: checked
1459 against a number of sample certificates.
1462 *) Add signature printing for PSS. Add PSS OIDs.
1463 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
1465 *) Add algorithm specific signature printing. An individual ASN1 method
1466 can now print out signatures instead of the standard hex dump.
1468 More complex signatures (e.g. PSS) can print out more meaningful
1469 information. Include DSA version that prints out the signature
1473 *) Password based recipient info support for CMS library: implementing
1477 *) Split password based encryption into PBES2 and PBKDF2 functions. This
1478 neatly separates the code into cipher and PBE sections and is required
1479 for some algorithms that split PBES2 into separate pieces (such as
1480 password based CMS).
1483 *) Session-handling fixes:
1484 - Fix handling of connections that are resuming with a session ID,
1485 but also support Session Tickets.
1486 - Fix a bug that suppressed issuing of a new ticket if the client
1487 presented a ticket with an expired session.
1488 - Try to set the ticket lifetime hint to something reasonable.
1489 - Make tickets shorter by excluding irrelevant information.
1490 - On the client side, don't ignore renewed tickets.
1491 [Adam Langley, Bodo Moeller (Google)]
1493 *) Fix PSK session representation.
1496 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
1498 This work was sponsored by Intel.
1501 *) Add GCM support to TLS library. Some custom code is needed to split
1502 the IV between the fixed (from PRF) and explicit (from TLS record)
1503 portions. This adds all GCM ciphersuites supported by RFC5288 and
1504 RFC5289. Generalise some AES* cipherstrings to include GCM and
1505 add a special AESGCM string for GCM only.
1508 *) Expand range of ctrls for AES GCM. Permit setting invocation
1509 field on decrypt and retrieval of invocation field only on encrypt.
1512 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
1513 As required by RFC5289 these ciphersuites cannot be used if for
1514 versions of TLS earlier than 1.2.
1517 *) For FIPS capable OpenSSL interpret a NULL default public key method
1518 as unset and return the appropriate default but do *not* set the default.
1519 This means we can return the appropriate method in applications that
1520 switch between FIPS and non-FIPS modes.
1523 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
1524 ENGINE is used then we cannot handle that in the FIPS module so we
1525 keep original code iff non-FIPS operations are allowed.
1528 *) Add -attime option to openssl utilities.
1529 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
1531 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
1534 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
1535 FIPS EC methods unconditionally for now.
1538 *) New build option no-ec2m to disable characteristic 2 code.
1541 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
1542 all cases can be covered as some introduce binary incompatibilities.
1545 *) Redirect RSA operations to FIPS module including keygen,
1546 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
1549 *) Add similar low level API blocking to ciphers.
1552 *) Low level digest APIs are not approved in FIPS mode: any attempt
1553 to use these will cause a fatal error. Applications that *really* want
1554 to use them can use the private_* version instead.
1557 *) Redirect cipher operations to FIPS module for FIPS builds.
1560 *) Redirect digest operations to FIPS module for FIPS builds.
1563 *) Update build system to add "fips" flag which will link in fipscanister.o
1564 for static and shared library builds embedding a signature if needed.
1567 *) Output TLS supported curves in preference order instead of numerical
1568 order. This is currently hardcoded for the highest order curves first.
1569 This should be configurable so applications can judge speed vs strength.
1572 *) Add TLS v1.2 server support for client authentication.
1575 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
1579 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
1580 FIPS modules versions.
1583 *) Add TLS v1.2 client side support for client authentication. Keep cache
1584 of handshake records longer as we don't know the hash algorithm to use
1585 until after the certificate request message is received.
1588 *) Initial TLS v1.2 client support. Add a default signature algorithms
1589 extension including all the algorithms we support. Parse new signature
1590 format in client key exchange. Relax some ECC signing restrictions for
1591 TLS v1.2 as indicated in RFC5246.
1594 *) Add server support for TLS v1.2 signature algorithms extension. Switch
1595 to new signature format when needed using client digest preference.
1596 All server ciphersuites should now work correctly in TLS v1.2. No client
1597 support yet and no support for client certificates.
1600 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
1601 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
1602 ciphersuites. At present only RSA key exchange ciphersuites work with
1603 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
1604 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
1605 and version checking.
1608 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
1609 with this defined it will not be affected by any changes to ssl internal
1610 structures. Add several utility functions to allow openssl application
1611 to work with OPENSSL_NO_SSL_INTERN defined.
1615 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
1617 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
1620 *) Permit abbreviated handshakes when renegotiating using the function
1621 SSL_renegotiate_abbreviated().
1622 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1624 *) Add call to ENGINE_register_all_complete() to
1625 ENGINE_load_builtin_engines(), so some implementations get used
1626 automatically instead of needing explicit application support.
1629 *) Add support for TLS key exporter as described in RFC5705.
1630 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
1632 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
1633 a few changes are required:
1635 Add SSL_OP_NO_TLSv1_1 flag.
1636 Add TLSv1_1 methods.
1637 Update version checking logic to handle version 1.1.
1638 Add explicit IV handling (ported from DTLS code).
1639 Add command line options to s_client/s_server.
1642 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
1644 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
1645 in CMS and PKCS7 code. When RSA decryption fails use a random key for
1646 content decryption and always return the same error. Note: this attack
1647 needs on average 2^20 messages so it only affects automated senders. The
1648 old behaviour can be reenabled in the CMS code by setting the
1649 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
1650 an MMA defence is not necessary.
1651 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
1652 this issue. (CVE-2012-0884)
1655 *) Fix CVE-2011-4619: make sure we really are receiving a
1656 client hello before rejecting multiple SGC restarts. Thanks to
1657 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
1660 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
1662 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
1663 Thanks to Antonio Martin, Enterprise Secure Access Research and
1664 Development, Cisco Systems, Inc. for discovering this bug and
1665 preparing a fix. (CVE-2012-0050)
1668 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
1670 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1671 of the Vaudenay padding oracle attack on CBC mode encryption
1672 which enables an efficient plaintext recovery attack against
1673 the OpenSSL implementation of DTLS. Their attack exploits timing
1674 differences arising during decryption processing. A research
1675 paper describing this attack can be found at:
1676 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1677 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1678 Security Group at Royal Holloway, University of London
1679 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1680 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1681 for preparing the fix. (CVE-2011-4108)
1682 [Robin Seggelmann, Michael Tuexen]
1684 *) Clear bytes used for block padding of SSL 3.0 records.
1686 [Adam Langley (Google)]
1688 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
1689 Kadianakis <desnacked@gmail.com> for discovering this issue and
1690 Adam Langley for preparing the fix. (CVE-2011-4619)
1691 [Adam Langley (Google)]
1693 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
1694 [Andrey Kulikov <amdeich@gmail.com>]
1696 *) Prevent malformed RFC3779 data triggering an assertion failure.
1697 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1698 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1699 [Rob Austein <sra@hactrn.net>]
1701 *) Improved PRNG seeding for VOS.
1702 [Paul Green <Paul.Green@stratus.com>]
1704 *) Fix ssl_ciph.c set-up race.
1705 [Adam Langley (Google)]
1707 *) Fix spurious failures in ecdsatest.c.
1708 [Emilia Käsper (Google)]
1710 *) Fix the BIO_f_buffer() implementation (which was mixing different
1711 interpretations of the '..._len' fields).
1712 [Adam Langley (Google)]
1714 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1715 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1716 threads won't reuse the same blinding coefficients.
1718 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1719 lock to call BN_BLINDING_invert_ex, and avoids one use of
1720 BN_BLINDING_update for each BN_BLINDING structure (previously,
1721 the last update always remained unused).
1722 [Emilia Käsper (Google)]
1724 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
1725 [Bob Buckholz (Google)]
1727 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
1729 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
1730 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
1731 [Kaspar Brand <ossl@velox.ch>]
1733 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1734 for multi-threaded use of ECDH. (CVE-2011-3210)
1735 [Adam Langley (Google)]
1737 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1740 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
1741 signature public key algorithm by using OID xref utilities instead.
1742 Before this you could only use some ECC ciphersuites with SHA1 only.
1745 *) Add protection against ECDSA timing attacks as mentioned in the paper
1746 by Billy Bob Brumley and Nicola Tuveri, see:
1748 http://eprint.iacr.org/2011/232.pdf
1750 [Billy Bob Brumley and Nicola Tuveri]
1752 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
1754 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1755 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1757 *) Fix bug in string printing code: if *any* escaping is enabled we must
1758 escape the escape character (backslash) or the resulting string is
1762 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
1764 *) Disable code workaround for ancient and obsolete Netscape browsers
1765 and servers: an attacker can use it in a ciphersuite downgrade attack.
1766 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1769 *) Fixed J-PAKE implementation error, originally discovered by
1770 Sebastien Martini, further info and confirmation from Stefan
1771 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1774 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
1776 *) Fix extension code to avoid race conditions which can result in a buffer
1777 overrun vulnerability: resumed sessions must not be modified as they can
1778 be shared by multiple threads. CVE-2010-3864
1781 *) Fix WIN32 build system to correctly link an ENGINE directory into
1785 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
1787 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
1789 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
1791 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
1793 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
1794 context. The operation can be customised via the ctrl mechanism in
1795 case ENGINEs want to include additional functionality.
1798 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
1801 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
1802 output hashes compatible with older versions of OpenSSL.
1803 [Willy Weisz <weisz@vcpc.univie.ac.at>]
1805 *) Fix compression algorithm handling: if resuming a session use the
1806 compression algorithm of the resumed session instead of determining
1807 it from client hello again. Don't allow server to change algorithm.
1810 *) Add load_crls() function to apps tidying load_certs() too. Add option
1811 to verify utility to allow additional CRLs to be included.
1814 *) Update OCSP request code to permit adding custom headers to the request:
1815 some responders need this.
1818 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
1820 [Julia Lawall <julia@diku.dk>]
1822 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
1823 needlessly dereferenced structures, used obsolete functions and
1824 didn't handle all updated verify codes correctly.
1827 *) Disable MD2 in the default configuration.
1830 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
1831 indicate the initial BIO being pushed or popped. This makes it possible
1832 to determine whether the BIO is the one explicitly called or as a result
1833 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
1834 it handles reference counts correctly and doesn't zero out the I/O bio
1835 when it is not being explicitly popped. WARNING: applications which
1836 included workarounds for the old buggy behaviour will need to be modified
1837 or they could free up already freed BIOs.
1840 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
1841 renaming to all platforms (within the 0.9.8 branch, this was
1842 done conditionally on Netware platforms to avoid a name clash).
1843 [Guenter <lists@gknw.net>]
1845 *) Add ECDHE and PSK support to DTLS.
1846 [Michael Tuexen <tuexen@fh-muenster.de>]
1848 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
1852 *) Add "missing" function EVP_MD_flags() (without this the only way to
1853 retrieve a digest flags is by accessing the structure directly. Update
1854 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
1855 or cipher is registered as in the "from" argument. Print out all
1856 registered digests in the dgst usage message instead of manually
1857 attempting to work them out.
1860 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
1861 this allows the use of compression and extensions. Change default cipher
1862 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
1863 by default unless an application cipher string requests it.
1866 *) Alter match criteria in PKCS12_parse(). It used to try to use local
1867 key ids to find matching certificates and keys but some PKCS#12 files
1868 don't follow the (somewhat unwritten) rules and this strategy fails.
1869 Now just gather all certificates together and the first private key
1870 then look for the first certificate that matches the key.
1873 *) Support use of registered digest and cipher names for dgst and cipher
1874 commands instead of having to add each one as a special case. So now
1881 openssl dgst -sha256 foo
1883 and this works for ENGINE based algorithms too.
1887 *) Update Gost ENGINE to support parameter files.
1888 [Victor B. Wagner <vitus@cryptocom.ru>]
1890 *) Support GeneralizedTime in ca utility.
1891 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
1893 *) Enhance the hash format used for certificate directory links. The new
1894 form uses the canonical encoding (meaning equivalent names will work
1895 even if they aren't identical) and uses SHA1 instead of MD5. This form
1896 is incompatible with the older format and as a result c_rehash should
1897 be used to rebuild symbolic links.
1900 *) Make PKCS#8 the default write format for private keys, replacing the
1901 traditional format. This form is standardised, more secure and doesn't
1902 include an implicit MD5 dependency.
1905 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
1906 committed to OpenSSL should pass this lot as a minimum.
1909 *) Add session ticket override functionality for use by EAP-FAST.
1910 [Jouni Malinen <j@w1.fi>]
1912 *) Modify HMAC functions to return a value. Since these can be implemented
1913 in an ENGINE errors can occur.
1916 *) Type-checked OBJ_bsearch_ex.
1919 *) Type-checked OBJ_bsearch. Also some constification necessitated
1920 by type-checking. Still to come: TXT_DB, bsearch(?),
1921 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
1925 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
1926 seconds to a tm structure directly, instead of going through OS
1927 specific date routines. This avoids any issues with OS routines such
1928 as the year 2038 bug. New *_adj() functions for ASN1 time structures
1929 and X509_time_adj_ex() to cover the extended range. The existing
1930 X509_time_adj() is still usable and will no longer have any date issues.
1933 *) Delta CRL support. New use deltas option which will attempt to locate
1934 and search any appropriate delta CRLs available.
1936 This work was sponsored by Google.
1939 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
1940 code and add additional score elements. Validate alternate CRL paths
1941 as part of the CRL checking and indicate a new error "CRL path validation
1942 error" in this case. Applications wanting additional details can use
1943 the verify callback and check the new "parent" field. If this is not
1944 NULL CRL path validation is taking place. Existing applications wont
1945 see this because it requires extended CRL support which is off by
1948 This work was sponsored by Google.
1951 *) Support for freshest CRL extension.
1953 This work was sponsored by Google.
1956 *) Initial indirect CRL support. Currently only supported in the CRLs
1957 passed directly and not via lookup. Process certificate issuer
1958 CRL entry extension and lookup CRL entries by bother issuer name
1959 and serial number. Check and process CRL issuer entry in IDP extension.
1961 This work was sponsored by Google.
1964 *) Add support for distinct certificate and CRL paths. The CRL issuer
1965 certificate is validated separately in this case. Only enabled if
1966 an extended CRL support flag is set: this flag will enable additional
1967 CRL functionality in future.
1969 This work was sponsored by Google.
1972 *) Add support for policy mappings extension.
1974 This work was sponsored by Google.
1977 *) Fixes to pathlength constraint, self issued certificate handling,
1978 policy processing to align with RFC3280 and PKITS tests.
1980 This work was sponsored by Google.
1983 *) Support for name constraints certificate extension. DN, email, DNS
1984 and URI types are currently supported.
1986 This work was sponsored by Google.
1989 *) To cater for systems that provide a pointer-based thread ID rather
1990 than numeric, deprecate the current numeric thread ID mechanism and
1991 replace it with a structure and associated callback type. This
1992 mechanism allows a numeric "hash" to be extracted from a thread ID in
1993 either case, and on platforms where pointers are larger than 'long',
1994 mixing is done to help ensure the numeric 'hash' is usable even if it
1995 can't be guaranteed unique. The default mechanism is to use "&errno"
1996 as a pointer-based thread ID to distinguish between threads.
1998 Applications that want to provide their own thread IDs should now use
1999 CRYPTO_THREADID_set_callback() to register a callback that will call
2000 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
2002 Note that ERR_remove_state() is now deprecated, because it is tied
2003 to the assumption that thread IDs are numeric. ERR_remove_state(0)
2004 to free the current thread's error state should be replaced by
2005 ERR_remove_thread_state(NULL).
2007 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
2008 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
2009 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
2010 application was previously providing a numeric thread callback that
2011 was inappropriate for distinguishing threads, then uniqueness might
2012 have been obtained with &errno that happened immediately in the
2013 intermediate development versions of OpenSSL; this is no longer the
2014 case, the numeric thread callback will now override the automatic use
2016 [Geoff Thorpe, with help from Bodo Moeller]
2018 *) Initial support for different CRL issuing certificates. This covers a
2019 simple case where the self issued certificates in the chain exist and
2020 the real CRL issuer is higher in the existing chain.
2022 This work was sponsored by Google.
2025 *) Removed effectively defunct crypto/store from the build.
2028 *) Revamp of STACK to provide stronger type-checking. Still to come:
2029 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
2030 ASN1_STRING, CONF_VALUE.
2033 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
2034 RAM on SSL connections. This option can save about 34k per idle SSL.
2037 *) Revamp of LHASH to provide stronger type-checking. Still to come:
2038 STACK, TXT_DB, bsearch, qsort.
2041 *) Initial support for Cryptographic Message Syntax (aka CMS) based
2042 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
2043 support for data, signedData, compressedData, digestedData and
2044 encryptedData, envelopedData types included. Scripts to check against
2045 RFC4134 examples draft and interop and consistency checks of many
2046 content types and variants.
2049 *) Add options to enc utility to support use of zlib compression BIO.
2052 *) Extend mk1mf to support importing of options and assembly language
2053 files from Configure script, currently only included in VC-WIN32.
2054 The assembly language rules can now optionally generate the source
2055 files from the associated perl scripts.
2058 *) Implement remaining functionality needed to support GOST ciphersuites.
2059 Interop testing has been performed using CryptoPro implementations.
2060 [Victor B. Wagner <vitus@cryptocom.ru>]
2062 *) s390x assembler pack.
2065 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
2069 *) Implement Opaque PRF Input TLS extension as specified in
2070 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
2071 official specification yet and no extension type assignment by
2072 IANA exists, this extension (for now) will have to be explicitly
2073 enabled when building OpenSSL by providing the extension number
2074 to use. For example, specify an option
2076 -DTLSEXT_TYPE_opaque_prf_input=0x9527
2078 to the "config" or "Configure" script to enable the extension,
2079 assuming extension number 0x9527 (which is a completely arbitrary
2080 and unofficial assignment based on the MD5 hash of the Internet
2081 Draft). Note that by doing so, you potentially lose
2082 interoperability with other TLS implementations since these might
2083 be using the same extension number for other purposes.
2085 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
2086 opaque PRF input value to use in the handshake. This will create
2087 an interal copy of the length-'len' string at 'src', and will
2088 return non-zero for success.
2090 To get more control and flexibility, provide a callback function
2093 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
2094 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
2098 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
2101 Callback function 'cb' will be called in handshakes, and is
2102 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
2103 Argument 'arg' is for application purposes (the value as given to
2104 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
2105 be provided to the callback function). The callback function
2106 has to return non-zero to report success: usually 1 to use opaque
2107 PRF input just if possible, or 2 to enforce use of the opaque PRF
2108 input. In the latter case, the library will abort the handshake
2109 if opaque PRF input is not successfully negotiated.
2111 Arguments 'peerinput' and 'len' given to the callback function
2112 will always be NULL and 0 in the case of a client. A server will
2113 see the client's opaque PRF input through these variables if
2114 available (NULL and 0 otherwise). Note that if the server
2115 provides an opaque PRF input, the length must be the same as the
2116 length of the client's opaque PRF input.
2118 Note that the callback function will only be called when creating
2119 a new session (session resumption can resume whatever was
2120 previously negotiated), and will not be called in SSL 2.0
2121 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
2122 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
2123 for applications that need to enforce opaque PRF input.
2127 *) Update ssl code to support digests other than SHA1+MD5 for handshake
2130 [Victor B. Wagner <vitus@cryptocom.ru>]
2132 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2133 RFC4507bis. The encrypted ticket format is an encrypted encoded
2134 SSL_SESSION structure, that way new session features are automatically
2137 If a client application caches session in an SSL_SESSION structure
2138 support is transparent because tickets are now stored in the encoded
2141 The SSL_CTX structure automatically generates keys for ticket
2142 protection in servers so again support should be possible
2143 with no application modification.
2145 If a client or server wishes to disable RFC4507 support then the option
2146 SSL_OP_NO_TICKET can be set.
2148 Add a TLS extension debugging callback to allow the contents of any client
2149 or server extensions to be examined.
2151 This work was sponsored by Google.
2154 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
2155 OpenSSL should now compile cleanly on gcc 4.2
2156 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
2158 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
2159 support including streaming MAC support: this is required for GOST
2160 ciphersuite support.
2161 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
2163 *) Add option -stream to use PKCS#7 streaming in smime utility. New
2164 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
2165 to output in BER and PEM format.
2168 *) Experimental support for use of HMAC via EVP_PKEY interface. This
2169 allows HMAC to be handled via the EVP_DigestSign*() interface. The
2170 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
2171 ENGINE support for HMAC keys which are unextractable. New -mac and
2172 -macopt options to dgst utility.
2175 *) New option -sigopt to dgst utility. Update dgst to use
2176 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
2177 alternative signing paramaters such as X9.31 or PSS in the dgst
2181 *) Change ssl_cipher_apply_rule(), the internal function that does
2182 the work each time a ciphersuite string requests enabling
2183 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
2184 removing ("!foo+bar") a class of ciphersuites: Now it maintains
2185 the order of disabled ciphersuites such that those ciphersuites
2186 that most recently went from enabled to disabled not only stay
2187 in order with respect to each other, but also have higher priority
2188 than other disabled ciphersuites the next time ciphersuites are
2191 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
2192 the same ciphersuites as with "HIGH" alone, but in a specific
2193 order where the PSK ciphersuites come first (since they are the
2194 most recently disabled ciphersuites when "HIGH" is parsed).
2196 Also, change ssl_create_cipher_list() (using this new
2197 funcionality) such that between otherwise identical
2198 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
2202 *) Change ssl_create_cipher_list() so that it automatically
2203 arranges the ciphersuites in reasonable order before starting
2204 to process the rule string. Thus, the definition for "DEFAULT"
2205 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
2206 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
2207 This makes it much easier to arrive at a reasonable default order
2208 in applications for which anonymous ciphers are OK (meaning
2209 that you can't actually use DEFAULT).
2210 [Bodo Moeller; suggested by Victor Duchovni]
2212 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
2213 processing) into multiple integers instead of setting
2214 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
2215 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
2216 (These masks as well as the individual bit definitions are hidden
2217 away into the non-exported interface ssl/ssl_locl.h, so this
2218 change to the definition of the SSL_CIPHER structure shouldn't
2219 affect applications.) This give us more bits for each of these
2220 categories, so there is no longer a need to coagulate AES128 and
2221 AES256 into a single algorithm bit, and to coagulate Camellia128
2222 and Camellia256 into a single algorithm bit, which has led to all
2225 Thus, among other things, the kludge introduced in 0.9.7m and
2226 0.9.8e for masking out AES256 independently of AES128 or masking
2227 out Camellia256 independently of AES256 is not needed here in 0.9.9.
2229 With the change, we also introduce new ciphersuite aliases that
2230 so far were missing: "AES128", "AES256", "CAMELLIA128", and
2234 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
2235 Use the leftmost N bytes of the signature input if the input is
2236 larger than the prime q (with N being the size in bytes of q).
2239 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
2240 it yet and it is largely untested.
2243 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
2246 *) Initial incomplete changes to avoid need for function casts in OpenSSL
2247 some compilers (gcc 4.2 and later) reject their use. Safestack is
2248 reimplemented. Update ASN1 to avoid use of legacy functions.
2251 *) Win32/64 targets are linked with Winsock2.
2254 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
2255 to external functions. This can be used to increase CRL handling
2256 efficiency especially when CRLs are very large by (for example) storing
2257 the CRL revoked certificates in a database.
2260 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
2261 new CRLs added to a directory can be used. New command line option
2262 -verify_return_error to s_client and s_server. This causes real errors
2263 to be returned by the verify callback instead of carrying on no matter
2264 what. This reflects the way a "real world" verify callback would behave.
2267 *) GOST engine, supporting several GOST algorithms and public key formats.
2268 Kindly donated by Cryptocom.
2271 *) Partial support for Issuing Distribution Point CRL extension. CRLs
2272 partitioned by DP are handled but no indirect CRL or reason partitioning
2273 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
2274 selected via a scoring technique which handles IDP and AKID in CRLs.
2277 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
2278 will ultimately be used for all verify operations: this will remove the
2279 X509_STORE dependency on certificate verification and allow alternative
2280 lookup methods. X509_STORE based implementations of these two callbacks.
2283 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
2284 Modify get_crl() to find a valid (unexpired) CRL if possible.
2287 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
2288 this would be called X509_CRL_cmp() but that name is already used by
2289 a function that just compares CRL issuer names. Cache several CRL
2290 extensions in X509_CRL structure and cache CRLDP in X509.
2293 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
2294 this maps equivalent X509_NAME structures into a consistent structure.
2295 Name comparison can then be performed rapidly using memcmp().
2298 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
2302 *) Allow digests to supply their own micalg string for S/MIME type using
2303 the ctrl EVP_MD_CTRL_MICALG.
2306 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
2307 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
2308 ctrl. It can then customise the structure before and/or after signing
2312 *) New function OBJ_add_sigid() to allow application defined signature OIDs
2313 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
2314 to free up any added signature OIDs.
2317 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
2318 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
2319 digest and cipher tables. New options added to openssl utility:
2320 list-message-digest-algorithms and list-cipher-algorithms.
2323 *) Change the array representation of binary polynomials: the list
2324 of degrees of non-zero coefficients is now terminated with -1.
2325 Previously it was terminated with 0, which was also part of the
2326 value; thus, the array representation was not applicable to
2327 polynomials where t^0 has coefficient zero. This change makes
2328 the array representation useful in a more general context.
2331 *) Various modifications and fixes to SSL/TLS cipher string
2332 handling. For ECC, the code now distinguishes between fixed ECDH
2333 with RSA certificates on the one hand and with ECDSA certificates
2334 on the other hand, since these are separate ciphersuites. The
2335 unused code for Fortezza ciphersuites has been removed.
2337 For consistency with EDH, ephemeral ECDH is now called "EECDH"
2338 (not "ECDHE"). For consistency with the code for DH
2339 certificates, use of ECDH certificates is now considered ECDH
2340 authentication, not RSA or ECDSA authentication (the latter is
2341 merely the CA's signing algorithm and not actively used in the
2344 The temporary ciphersuite alias "ECCdraft" is no longer
2345 available, and ECC ciphersuites are no longer excluded from "ALL"
2346 and "DEFAULT". The following aliases now exist for RFC 4492
2347 ciphersuites, most of these by analogy with the DH case:
2349 kECDHr - ECDH cert, signed with RSA
2350 kECDHe - ECDH cert, signed with ECDSA
2351 kECDH - ECDH cert (signed with either RSA or ECDSA)
2352 kEECDH - ephemeral ECDH
2353 ECDH - ECDH cert or ephemeral ECDH
2359 AECDH - anonymous ECDH
2360 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
2364 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
2365 Use correct micalg parameters depending on digest(s) in signed message.
2368 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
2369 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
2372 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
2373 an engine to register a method. Add ENGINE lookups for methods and
2374 functional reference processing.
2377 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
2378 EVP_{Sign,Verify}* which allow an application to customise the signature
2382 *) New -resign option to smime utility. This adds one or more signers
2383 to an existing PKCS#7 signedData structure. Also -md option to use an
2384 alternative message digest algorithm for signing.
2387 *) Tidy up PKCS#7 routines and add new functions to make it easier to
2388 create PKCS7 structures containing multiple signers. Update smime
2389 application to support multiple signers.
2392 *) New -macalg option to pkcs12 utility to allow setting of an alternative
2396 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
2397 Reorganize PBE internals to lookup from a static table using NIDs,
2398 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
2399 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
2400 PRF which will be automatically used with PBES2.
2403 *) Replace the algorithm specific calls to generate keys in "req" with the
2407 *) Update PKCS#7 enveloped data routines to use new API. This is now
2408 supported by any public key method supporting the encrypt operation. A
2409 ctrl is added to allow the public key algorithm to examine or modify
2410 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
2414 *) Add a ctrl to asn1 method to allow a public key algorithm to express
2415 a default digest type to use. In most cases this will be SHA1 but some
2416 algorithms (such as GOST) need to specify an alternative digest. The
2417 return value indicates how strong the preference is 1 means optional and
2418 2 is mandatory (that is it is the only supported type). Modify
2419 ASN1_item_sign() to accept a NULL digest argument to indicate it should
2420 use the default md. Update openssl utilities to use the default digest
2421 type for signing if it is not explicitly indicated.
2424 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
2425 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
2426 signing method from the key type. This effectively removes the link
2427 between digests and public key types.
2430 *) Add an OID cross reference table and utility functions. Its purpose is to
2431 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
2432 rsaEncryption. This will allow some of the algorithm specific hackery
2433 needed to use the correct OID to be removed.
2436 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
2437 structures for PKCS7_sign(). They are now set up by the relevant public
2441 *) Add provisional EC pkey method with support for ECDSA and ECDH.
2444 *) Add support for key derivation (agreement) in the API, DH method and
2448 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
2449 public and private key formats. As a side effect these add additional
2450 command line functionality not previously available: DSA signatures can be
2451 generated and verified using pkeyutl and DH key support and generation in
2456 [Oliver Tappe <zooey@hirschkaefer.de>]
2458 *) New make target "install_html_docs" installs HTML renditions of the
2460 [Oliver Tappe <zooey@hirschkaefer.de>]
2462 *) New utility "genpkey" this is analogous to "genrsa" etc except it can
2463 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
2464 support key and parameter generation and add initial key generation
2465 functionality for RSA.
2468 *) Add functions for main EVP_PKEY_method operations. The undocumented
2469 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
2470 EVP_PKEY_{encrypt,decrypt}_old.
2473 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
2474 key API, doesn't do much yet.
2477 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
2478 public key algorithms. New option to openssl utility:
2479 "list-public-key-algorithms" to print out info.
2482 *) Implement the Supported Elliptic Curves Extension for
2483 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
2486 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
2487 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
2490 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
2491 utilities such as rsa, dsa, dsaparam etc except they process any key
2495 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
2496 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
2497 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
2501 *) Initial support for pluggable public key ASN1.
2502 De-spaghettify the public key ASN1 handling. Move public and private
2503 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
2504 algorithm specific handling to a single module within the relevant
2505 algorithm directory. Add functions to allow (near) opaque processing
2506 of public and private key structures.
2509 *) Implement the Supported Point Formats Extension for
2510 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
2513 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
2514 for the psk identity [hint] and the psk callback functions to the
2515 SSL_SESSION, SSL and SSL_CTX structure.
2518 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
2522 SSL_CTX_use_psk_identity_hint
2523 SSL_get_psk_identity_hint
2524 SSL_get_psk_identity
2525 SSL_use_psk_identity_hint
2527 [Mika Kousa and Pasi Eronen of Nokia Corporation]
2529 *) Add RFC 3161 compliant time stamp request creation, response generation
2530 and response verification functionality.
2531 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
2533 *) Add initial support for TLS extensions, specifically for the server_name
2534 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2535 have new members for a host name. The SSL data structure has an
2536 additional member SSL_CTX *initial_ctx so that new sessions can be
2537 stored in that context to allow for session resumption, even after the
2538 SSL has been switched to a new SSL_CTX in reaction to a client's
2539 server_name extension.
2541 New functions (subject to change):
2543 SSL_get_servername()
2544 SSL_get_servername_type()
2547 New CTRL codes and macros (subject to change):
2549 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2550 - SSL_CTX_set_tlsext_servername_callback()
2551 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2552 - SSL_CTX_set_tlsext_servername_arg()
2553 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2555 openssl s_client has a new '-servername ...' option.
2557 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2558 '-key2 ...', '-servername_fatal' (subject to change). This allows
2559 testing the HostName extension for a specific single host name ('-cert'
2560 and '-key' remain fallbacks for handshakes without HostName
2561 negotiation). If the unrecognized_name alert has to be sent, this by
2562 default is a warning; it becomes fatal with the '-servername_fatal'
2565 [Peter Sylvester, Remy Allais, Christophe Renou]
2567 *) Whirlpool hash implementation is added.
2570 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
2571 bn(64,32). Because of instruction set limitations it doesn't have
2572 any negative impact on performance. This was done mostly in order
2573 to make it possible to share assembler modules, such as bn_mul_mont
2574 implementations, between 32- and 64-bit builds without hassle.
2577 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
2578 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
2582 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
2583 dedicated Montgomery multiplication procedure, is introduced.
2584 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
2585 "64-bit" performance on certain 32-bit targets.
2588 *) New option SSL_OP_NO_COMP to disable use of compression selectively
2589 in SSL structures. New SSL ctrl to set maximum send fragment size.
2590 Save memory by seeting the I/O buffer sizes dynamically instead of
2591 using the maximum available value.
2594 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
2595 in addition to the text details.
2598 *) Very, very preliminary EXPERIMENTAL support for printing of general
2599 ASN1 structures. This currently produces rather ugly output and doesn't
2600 handle several customised structures at all.
2603 *) Integrated support for PVK file format and some related formats such
2604 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
2605 these in the 'rsa' and 'dsa' utilities.
2608 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
2611 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
2612 place for the (very old) "NETSCAPE" format certificates which are now
2613 handled using new ASN1 code equivalents.
2616 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
2617 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
2618 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
2621 *) Modify CRL distribution points extension code to print out previously
2622 unsupported fields. Enhance extension setting code to allow setting of
2626 *) Add print and set support for Issuing Distribution Point CRL extension.
2629 *) Change 'Configure' script to enable Camellia by default.
2632 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
2634 *) When rejecting SSL/TLS records due to an incorrect version number, never
2635 update s->server with a new major version number. As of
2636 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
2637 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
2638 the previous behavior could result in a read attempt at NULL when
2639 receiving specific incorrect SSL/TLS records once record payload
2640 protection is active. (CVE-2010-0740)
2641 [Bodo Moeller, Adam Langley <agl@chromium.org>]
2643 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
2644 could be crashed if the relevant tables were not present (e.g. chrooted).
2645 [Tomas Hoger <thoger@redhat.com>]
2647 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
2649 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
2650 [Martin Olsson, Neel Mehta]
2652 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
2653 accommodate for stack sorting, always a write lock!).
2656 *) On some versions of WIN32 Heap32Next is very slow. This can cause
2657 excessive delays in the RAND_poll(): over a minute. As a workaround
2658 include a time check in the inner Heap32Next loop too.
2661 *) The code that handled flushing of data in SSL/TLS originally used the
2662 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
2663 the problem outlined in PR#1949. The fix suggested there however can
2664 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
2665 of Apache). So instead simplify the code to flush unconditionally.
2666 This should be fine since flushing with no data to flush is a no op.
2669 *) Handle TLS versions 2.0 and later properly and correctly use the
2670 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
2671 off ancient servers have a habit of sticking around for a while...
2674 *) Modify compression code so it frees up structures without using the
2675 ex_data callbacks. This works around a problem where some applications
2676 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
2677 restarting) then use compression (e.g. SSL with compression) later.
2678 This results in significant per-connection memory leaks and
2679 has caused some security issues including CVE-2008-1678 and
2683 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
2684 change when encrypting or decrypting.
2687 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
2688 connect and renegotiate with servers which do not support RI.
2689 Until RI is more widely deployed this option is enabled by default.
2692 *) Add "missing" ssl ctrls to clear options and mode.
2695 *) If client attempts to renegotiate and doesn't support RI respond with
2696 a no_renegotiation alert as required by RFC5746. Some renegotiating
2697 TLS clients will continue a connection gracefully when they receive
2698 the alert. Unfortunately OpenSSL mishandled this alert and would hang
2699 waiting for a server hello which it will never receive. Now we treat a
2700 received no_renegotiation alert as a fatal error. This is because
2701 applications requesting a renegotiation might well expect it to succeed
2702 and would have no code in place to handle the server denying it so the
2703 only safe thing to do is to terminate the connection.
2706 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
2707 peer supports secure renegotiation and 0 otherwise. Print out peer
2708 renegotiation support in s_client/s_server.
2711 *) Replace the highly broken and deprecated SPKAC certification method with
2712 the updated NID creation version. This should correctly handle UTF8.
2715 *) Implement RFC5746. Re-enable renegotiation but require the extension
2716 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
2717 turns out to be a bad idea. It has been replaced by
2718 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
2719 SSL_CTX_set_options(). This is really not recommended unless you
2720 know what you are doing.
2721 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
2723 *) Fixes to stateless session resumption handling. Use initial_ctx when
2724 issuing and attempting to decrypt tickets in case it has changed during
2725 servername handling. Use a non-zero length session ID when attempting
2726 stateless session resumption: this makes it possible to determine if
2727 a resumption has occurred immediately after receiving server hello
2728 (several places in OpenSSL subtly assume this) instead of later in
2732 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
2733 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
2734 fixes for a few places where the return code is not checked
2736 [Julia Lawall <julia@diku.dk>]
2738 *) Add --strict-warnings option to Configure script to include devteam
2739 warnings in other configurations.
2742 *) Add support for --libdir option and LIBDIR variable in makefiles. This
2743 makes it possible to install openssl libraries in locations which
2744 have names other than "lib", for example "/usr/lib64" which some
2746 [Steve Henson, based on patch from Jeremy Utley]
2748 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
2749 X690 8.9.12 and can produce some misleading textual output of OIDs.
2750 [Steve Henson, reported by Dan Kaminsky]
2752 *) Delete MD2 from algorithm tables. This follows the recommendation in
2753 several standards that it is not used in new applications due to
2754 several cryptographic weaknesses. For binary compatibility reasons
2755 the MD2 API is still compiled in by default.
2758 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
2762 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
2763 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
2765 [Guenter <lists@gknw.net>]
2767 *) Fix the server certificate chain building code to use X509_verify_cert(),
2768 it used to have an ad-hoc builder which was unable to cope with anything
2769 other than a simple chain.
2770 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
2772 *) Don't check self signed certificate signatures in X509_verify_cert()
2773 by default (a flag can override this): it just wastes time without
2774 adding any security. As a useful side effect self signed root CAs
2775 with non-FIPS digests are now usable in FIPS mode.
2778 *) In dtls1_process_out_of_seq_message() the check if the current message
2779 is already buffered was missing. For every new message was memory
2780 allocated, allowing an attacker to perform an denial of service attack
2781 with sending out of seq handshake messages until there is no memory
2782 left. Additionally every future messege was buffered, even if the
2783 sequence number made no sense and would be part of another handshake.
2784 So only messages with sequence numbers less than 10 in advance will be
2785 buffered. (CVE-2009-1378)
2786 [Robin Seggelmann, discovered by Daniel Mentz]
2788 *) Records are buffered if they arrive with a future epoch to be
2789 processed after finishing the corresponding handshake. There is
2790 currently no limitation to this buffer allowing an attacker to perform
2791 a DOS attack with sending records with future epochs until there is no
2792 memory left. This patch adds the pqueue_size() function to determine
2793 the size of a buffer and limits the record buffer to 100 entries.
2795 [Robin Seggelmann, discovered by Daniel Mentz]
2797 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
2798 parent structure is freed. (CVE-2009-1379)
2801 *) Handle non-blocking I/O properly in SSL_shutdown() call.
2802 [Darryl Miles <darryl-mailinglists@netbauds.net>]
2805 [Ilya O. <vrghost@gmail.com>]
2807 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
2809 *) Disable renegotiation completely - this fixes a severe security
2810 problem (CVE-2009-3555) at the cost of breaking all
2811 renegotiation. Renegotiation can be re-enabled by setting
2812 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
2813 run-time. This is really not recommended unless you know what
2817 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
2819 *) Don't set val to NULL when freeing up structures, it is freed up by
2820 underlying code. If sizeof(void *) > sizeof(long) this can result in
2821 zeroing past the valid field. (CVE-2009-0789)
2822 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
2824 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
2825 checked correctly. This would allow some invalid signed attributes to
2826 appear to verify correctly. (CVE-2009-0591)
2827 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2829 *) Reject UniversalString and BMPString types with invalid lengths. This
2830 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
2831 a legal length. (CVE-2009-0590)
2834 *) Set S/MIME signing as the default purpose rather than setting it
2835 unconditionally. This allows applications to override it at the store
2839 *) Permit restricted recursion of ASN1 strings. This is needed in practice
2840 to handle some structures.
2843 *) Improve efficiency of mem_gets: don't search whole buffer each time
2845 [Jeremy Shapiro <jnshapir@us.ibm.com>]
2847 *) New -hex option for openssl rand.
2850 *) Print out UTF8String and NumericString when parsing ASN1.
2853 *) Support NumericString type for name components.
2856 *) Allow CC in the environment to override the automatically chosen
2857 compiler. Note that nothing is done to ensure flags work with the
2861 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
2863 *) Properly check EVP_VerifyFinal() and similar return values
2865 [Ben Laurie, Bodo Moeller, Google Security Team]
2867 *) Enable TLS extensions by default.
2870 *) Allow the CHIL engine to be loaded, whether the application is
2871 multithreaded or not. (This does not release the developer from the
2872 obligation to set up the dynamic locking callbacks.)
2873 [Sander Temme <sander@temme.net>]
2875 *) Use correct exit code if there is an error in dgst command.
2876 [Steve Henson; problem pointed out by Roland Dirlewanger]
2878 *) Tweak Configure so that you need to say "experimental-jpake" to enable
2879 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
2882 *) Add experimental JPAKE support, including demo authentication in
2883 s_client and s_server.
2886 *) Set the comparison function in v3_addr_canonize().
2887 [Rob Austein <sra@hactrn.net>]
2889 *) Add support for XMPP STARTTLS in s_client.
2890 [Philip Paeps <philip@freebsd.org>]
2892 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
2893 to ensure that even with this option, only ciphersuites in the
2894 server's preference list will be accepted. (Note that the option
2895 applies only when resuming a session, so the earlier behavior was
2896 just about the algorithm choice for symmetric cryptography.)
2899 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
2901 *) Fix NULL pointer dereference if a DTLS server received
2902 ChangeCipherSpec as first record (CVE-2009-1386).
2905 *) Fix a state transition in s3_srvr.c and d1_srvr.c
2906 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
2909 *) The fix in 0.9.8c that supposedly got rid of unsafe
2910 double-checked locking was incomplete for RSA blinding,
2911 addressing just one layer of what turns out to have been
2912 doubly unsafe triple-checked locking.
2914 So now fix this for real by retiring the MONT_HELPER macro
2915 in crypto/rsa/rsa_eay.c.
2917 [Bodo Moeller; problem pointed out by Marius Schilder]
2919 *) Various precautionary measures:
2921 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
2923 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
2924 (NB: This would require knowledge of the secret session ticket key
2925 to exploit, in which case you'd be SOL either way.)
2927 - Change bn_nist.c so that it will properly handle input BIGNUMs
2928 outside the expected range.
2930 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
2933 [Neel Mehta, Bodo Moeller]
2935 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
2936 the load fails. Useful for distros.
2937 [Ben Laurie and the FreeBSD team]
2939 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
2942 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
2945 *) Expand ENGINE to support engine supplied SSL client certificate functions.
2947 This work was sponsored by Logica.
2950 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
2951 keystores. Support for SSL/TLS client authentication too.
2952 Not compiled unless enable-capieng specified to Configure.
2954 This work was sponsored by Logica.
2957 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
2958 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
2959 attribute creation routines such as certifcate requests and PKCS#12
2963 Changes between 0.9.8g and 0.9.8h [28 May 2008]
2965 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
2966 handshake which could lead to a cilent crash as found using the
2967 Codenomicon TLS test suite (CVE-2008-1672)
2968 [Steve Henson, Mark Cox]
2970 *) Fix double free in TLS server name extensions which could lead to
2971 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
2974 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
2976 Clear the error queue to ensure that error entries left from
2977 older function calls do not interfere with the correct operation.
2978 [Lutz Jaenicke, Erik de Castro Lopo]
2980 *) Remove root CA certificates of commercial CAs:
2982 The OpenSSL project does not recommend any specific CA and does not
2983 have any policy with respect to including or excluding any CA.
2984 Therefore it does not make any sense to ship an arbitrary selection
2985 of root CA certificates with the OpenSSL software.
2988 *) RSA OAEP patches to fix two separate invalid memory reads.
2989 The first one involves inputs when 'lzero' is greater than
2990 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
2991 before the beginning of from). The second one involves inputs where
2992 the 'db' section contains nothing but zeroes (there is a one-byte
2993 invalid read after the end of 'db').
2994 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2996 *) Partial backport from 0.9.9-dev:
2998 Introduce bn_mul_mont (dedicated Montgomery multiplication
2999 procedure) as a candidate for BIGNUM assembler implementation.
3000 While 0.9.9-dev uses assembler for various architectures, only
3001 x86_64 is available by default here in the 0.9.8 branch, and
3002 32-bit x86 is available through a compile-time setting.
3004 To try the 32-bit x86 assembler implementation, use Configure
3005 option "enable-montasm" (which exists only for this backport).
3007 As "enable-montasm" for 32-bit x86 disclaims code stability
3008 anyway, in this constellation we activate additional code
3009 backported from 0.9.9-dev for further performance improvements,
3010 namely BN_from_montgomery_word. (To enable this otherwise,
3011 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
3013 [Andy Polyakov (backport partially by Bodo Moeller)]
3015 *) Add TLS session ticket callback. This allows an application to set
3016 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
3017 values. This is useful for key rollover for example where several key
3018 sets may exist with different names.
3021 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
3022 This was broken until now in 0.9.8 releases, such that the only way
3023 a registered ENGINE could be used (assuming it initialises
3024 successfully on the host) was to explicitly set it as the default
3025 for the relevant algorithms. This is in contradiction with 0.9.7
3026 behaviour and the documentation. With this fix, when an ENGINE is
3027 registered into a given algorithm's table of implementations, the
3028 'uptodate' flag is reset so that auto-discovery will be used next
3029 time a new context for that algorithm attempts to select an
3031 [Ian Lister (tweaked by Geoff Thorpe)]
3033 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
3034 implemention in the following ways:
3036 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
3039 Lack of BER streaming support means one pass streaming processing is
3040 only supported if data is detached: setting the streaming flag is
3041 ignored for embedded content.
3043 CMS support is disabled by default and must be explicitly enabled
3044 with the enable-cms configuration option.
3047 *) Update the GMP engine glue to do direct copies between BIGNUM and
3048 mpz_t when openssl and GMP use the same limb size. Otherwise the
3049 existing "conversion via a text string export" trick is still used.
3050 [Paul Sheer <paulsheer@gmail.com>]
3052 *) Zlib compression BIO. This is a filter BIO which compressed and
3053 uncompresses any data passed through it.
3056 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
3057 RFC3394 compatible AES key wrapping.
3060 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
3061 sets string data without copying. X509_ALGOR_set0() and
3062 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
3063 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
3064 from an X509_ATTRIBUTE structure optionally checking it occurs only
3065 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
3069 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
3070 to get the expected BN_FLG_CONSTTIME behavior.
3071 [Bodo Moeller (Google)]
3075 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
3076 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
3077 - added some more tests to do_tests.pl
3078 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
3079 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
3080 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
3081 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
3082 - various changes to netware.pl to enable gcc-cross builds on Win32
3084 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
3085 - various changes to fix missing prototype warnings
3086 - fixed x86nasm.pl to create correct asm files for NASM COFF output
3087 - added AES, WHIRLPOOL and CPUID assembler code to build files
3088 - added missing AES assembler make rules to mk1mf.pl
3089 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
3090 [Guenter Knauf <eflash@gmx.net>]
3092 *) Implement certificate status request TLS extension defined in RFC3546.
3093 A client can set the appropriate parameters and receive the encoded
3094 OCSP response via a callback. A server can query the supplied parameters
3095 and set the encoded OCSP response in the callback. Add simplified examples
3096 to s_client and s_server.
3099 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
3101 *) Fix various bugs:
3102 + Binary incompatibility of ssl_ctx_st structure
3103 + DTLS interoperation with non-compliant servers
3104 + Don't call get_session_cb() without proposed session
3105 + Fix ia64 assembler code
3106 [Andy Polyakov, Steve Henson]
3108 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
3110 *) DTLS Handshake overhaul. There were longstanding issues with
3111 OpenSSL DTLS implementation, which were making it impossible for
3112 RFC 4347 compliant client to communicate with OpenSSL server.
3113 Unfortunately just fixing these incompatibilities would "cut off"
3114 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
3115 server keeps tolerating non RFC compliant syntax. The opposite is
3116 not true, 0.9.8f client can not communicate with earlier server.
3117 This update even addresses CVE-2007-4995.
3120 *) Changes to avoid need for function casts in OpenSSL: some compilers
3121 (gcc 4.2 and later) reject their use.
3122 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
3125 *) Add RFC4507 support to OpenSSL. This includes the corrections in
3126 RFC4507bis. The encrypted ticket format is an encrypted encoded
3127 SSL_SESSION structure, that way new session features are automatically
3130 If a client application caches session in an SSL_SESSION structure
3131 support is transparent because tickets are now stored in the encoded
3134 The SSL_CTX structure automatically generates keys for ticket
3135 protection in servers so again support should be possible
3136 with no application modification.
3138 If a client or server wishes to disable RFC4507 support then the option
3139 SSL_OP_NO_TICKET can be set.
3141 Add a TLS extension debugging callback to allow the contents of any client
3142 or server extensions to be examined.
3144 This work was sponsored by Google.
3147 *) Add initial support for TLS extensions, specifically for the server_name
3148 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
3149 have new members for a host name. The SSL data structure has an
3150 additional member SSL_CTX *initial_ctx so that new sessions can be
3151 stored in that context to allow for session resumption, even after the
3152 SSL has been switched to a new SSL_CTX in reaction to a client's
3153 server_name extension.
3155 New functions (subject to change):
3157 SSL_get_servername()
3158 SSL_get_servername_type()
3161 New CTRL codes and macros (subject to change):
3163 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
3164 - SSL_CTX_set_tlsext_servername_callback()
3165 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
3166 - SSL_CTX_set_tlsext_servername_arg()
3167 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
3169 openssl s_client has a new '-servername ...' option.
3171 openssl s_server has new options '-servername_host ...', '-cert2 ...',
3172 '-key2 ...', '-servername_fatal' (subject to change). This allows
3173 testing the HostName extension for a specific single host name ('-cert'
3174 and '-key' remain fallbacks for handshakes without HostName
3175 negotiation). If the unrecognized_name alert has to be sent, this by
3176 default is a warning; it becomes fatal with the '-servername_fatal'
3179 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
3181 *) Add AES and SSE2 assembly language support to VC++ build.
3184 *) Mitigate attack on final subtraction in Montgomery reduction.
3187 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
3188 (which previously caused an internal error).
3191 *) Squeeze another 10% out of IGE mode when in != out.
3194 *) AES IGE mode speedup.
3195 [Dean Gaudet (Google)]
3197 *) Add the Korean symmetric 128-bit cipher SEED (see
3198 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
3199 add SEED ciphersuites from RFC 4162:
3201 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
3202 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
3203 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
3204 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
3206 To minimize changes between patchlevels in the OpenSSL 0.9.8
3207 series, SEED remains excluded from compilation unless OpenSSL
3208 is configured with 'enable-seed'.
3209 [KISA, Bodo Moeller]
3211 *) Mitigate branch prediction attacks, which can be practical if a
3212 single processor is shared, allowing a spy process to extract
3213 information. For detailed background information, see
3214 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
3215 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
3216 and Necessary Software Countermeasures"). The core of the change
3217 are new versions BN_div_no_branch() and
3218 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
3219 respectively, which are slower, but avoid the security-relevant
3220 conditional branches. These are automatically called by BN_div()
3221 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
3222 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
3223 remove a conditional branch.
3225 BN_FLG_CONSTTIME is the new name for the previous
3226 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
3227 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
3228 in the exponent causes BN_mod_exp_mont() to use the alternative
3229 implementation in BN_mod_exp_mont_consttime().) The old name
3230 remains as a deprecated alias.
3232 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
3233 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
3234 constant-time implementations for more than just exponentiation.
3235 Here too the old name is kept as a deprecated alias.
3237 BN_BLINDING_new() will now use BN_dup() for the modulus so that
3238 the BN_BLINDING structure gets an independent copy of the
3239 modulus. This means that the previous "BIGNUM *m" argument to
3240 BN_BLINDING_new() and to BN_BLINDING_create_param() now
3241 essentially becomes "const BIGNUM *m", although we can't actually
3242 change this in the header file before 0.9.9. It allows
3243 RSA_setup_blinding() to use BN_with_flags() on the modulus to
3244 enable BN_FLG_CONSTTIME.
3246 [Matthew D Wood (Intel Corp)]
3248 *) In the SSL/TLS server implementation, be strict about session ID
3249 context matching (which matters if an application uses a single
3250 external cache for different purposes). Previously,
3251 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
3252 set. This did ensure strict client verification, but meant that,
3253 with applications using a single external cache for quite
3254 different requirements, clients could circumvent ciphersuite
3255 restrictions for a given session ID context by starting a session
3256 in a different context.
3259 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3260 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3261 authentication-only ciphersuites.
3264 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
3265 not complete and could lead to a possible single byte overflow
3266 (CVE-2007-5135) [Ben Laurie]
3268 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
3270 *) Since AES128 and AES256 (and similarly Camellia128 and
3271 Camellia256) share a single mask bit in the logic of
3272 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3273 kludge to work properly if AES128 is available and AES256 isn't
3274 (or if Camellia128 is available and Camellia256 isn't).
3277 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
3278 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
3279 When a point or a seed is encoded in a BIT STRING, we need to
3280 prevent the removal of trailing zero bits to get the proper DER
3281 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
3282 of a NamedBitList, for which trailing 0 bits need to be removed.)
3285 *) Have SSL/TLS server implementation tolerate "mismatched" record
3286 protocol version while receiving ClientHello even if the
3287 ClientHello is fragmented. (The server can't insist on the
3288 particular protocol version it has chosen before the ServerHello
3289 message has informed the client about his choice.)
3292 *) Add RFC 3779 support.
3293 [Rob Austein for ARIN, Ben Laurie]
3295 *) Load error codes if they are not already present instead of using a
3296 static variable. This allows them to be cleanly unloaded and reloaded.
3297 Improve header file function name parsing.
3300 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
3301 or CAPABILITY handshake as required by RFCs.
3304 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
3306 *) Introduce limits to prevent malicious keys being able to
3307 cause a denial of service. (CVE-2006-2940)
3308 [Steve Henson, Bodo Moeller]
3310 *) Fix ASN.1 parsing of certain invalid structures that can result
3311 in a denial of service. (CVE-2006-2937) [Steve Henson]
3313 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3314 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3316 *) Fix SSL client code which could crash if connecting to a
3317 malicious SSLv2 server. (CVE-2006-4343)
3318 [Tavis Ormandy and Will Drewry, Google Security Team]
3320 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
3321 match only those. Before that, "AES256-SHA" would be interpreted
3322 as a pattern and match "AES128-SHA" too (since AES128-SHA got
3323 the same strength classification in 0.9.7h) as we currently only
3324 have a single AES bit in the ciphersuite description bitmap.
3325 That change, however, also applied to ciphersuite strings such as
3326 "RC4-MD5" that intentionally matched multiple ciphersuites --
3327 namely, SSL 2.0 ciphersuites in addition to the more common ones
3328 from SSL 3.0/TLS 1.0.
3330 So we change the selection algorithm again: Naming an explicit
3331 ciphersuite selects this one ciphersuite, and any other similar
3332 ciphersuite (same bitmap) from *other* protocol versions.
3333 Thus, "RC4-MD5" again will properly select both the SSL 2.0
3334 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
3336 Since SSL 2.0 does not have any ciphersuites for which the
3337 128/256 bit distinction would be relevant, this works for now.
3338 The proper fix will be to use different bits for AES128 and
3339 AES256, which would have avoided the problems from the beginning;
3340 however, bits are scarce, so we can only do this in a new release
3341 (not just a patchlevel) when we can change the SSL_CIPHER
3342 definition to split the single 'unsigned long mask' bitmap into
3343 multiple values to extend the available space.
3347 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
3349 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3350 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3352 *) Add AES IGE and biIGE modes.
3355 *) Change the Unix randomness entropy gathering to use poll() when
3356 possible instead of select(), since the latter has some
3357 undesirable limitations.
3358 [Darryl Miles via Richard Levitte and Bodo Moeller]
3360 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
3361 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
3362 cannot be implicitly activated as part of, e.g., the "AES" alias.
3363 However, please upgrade to OpenSSL 0.9.9[-dev] for
3364 non-experimental use of the ECC ciphersuites to get TLS extension
3365 support, which is required for curve and point format negotiation
3366 to avoid potential handshake problems.
3369 *) Disable rogue ciphersuites:
3371 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3372 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3373 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3375 The latter two were purportedly from
3376 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3379 Also deactivate the remaining ciphersuites from
3380 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3381 unofficial, and the ID has long expired.
3384 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3385 dual-core machines) and other potential thread-safety issues.
3388 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
3389 versions), which is now available for royalty-free use
3390 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
3391 Also, add Camellia TLS ciphersuites from RFC 4132.
3393 To minimize changes between patchlevels in the OpenSSL 0.9.8
3394 series, Camellia remains excluded from compilation unless OpenSSL
3395 is configured with 'enable-camellia'.
3398 *) Disable the padding bug check when compression is in use. The padding
3399 bug check assumes the first packet is of even length, this is not
3400 necessarily true if compresssion is enabled and can result in false
3401 positives causing handshake failure. The actual bug test is ancient
3402 code so it is hoped that implementations will either have fixed it by
3403 now or any which still have the bug do not support compression.
3406 Changes between 0.9.8a and 0.9.8b [04 May 2006]
3408 *) When applying a cipher rule check to see if string match is an explicit
3409 cipher suite and only match that one cipher suite if it is.
3412 *) Link in manifests for VC++ if needed.
3413 [Austin Ziegler <halostatue@gmail.com>]
3415 *) Update support for ECC-based TLS ciphersuites according to
3416 draft-ietf-tls-ecc-12.txt with proposed changes (but without
3417 TLS extensions, which are supported starting with the 0.9.9
3418 branch, not in the OpenSSL 0.9.8 branch).
3421 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
3422 opaque EVP_CIPHER_CTX handling.
3425 *) Fixes and enhancements to zlib compression code. We now only use
3426 "zlib1.dll" and use the default __cdecl calling convention on Win32
3427 to conform with the standards mentioned here:
3428 http://www.zlib.net/DLL_FAQ.txt
3429 Static zlib linking now works on Windows and the new --with-zlib-include
3430 --with-zlib-lib options to Configure can be used to supply the location
3431 of the headers and library. Gracefully handle case where zlib library
3435 *) Several fixes and enhancements to the OID generation code. The old code
3436 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
3437 handle numbers larger than ULONG_MAX, truncated printing and had a
3438 non standard OBJ_obj2txt() behaviour.
3441 *) Add support for building of engines under engine/ as shared libraries
3442 under VC++ build system.
3445 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
3446 Hopefully, we will not see any false combination of paths any more.
3449 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
3451 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3452 (part of SSL_OP_ALL). This option used to disable the
3453 countermeasure against man-in-the-middle protocol-version
3454 rollback in the SSL 2.0 server implementation, which is a bad
3455 idea. (CVE-2005-2969)
3457 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3458 for Information Security, National Institute of Advanced Industrial
3459 Science and Technology [AIST], Japan)]
3461 *) Add two function to clear and return the verify parameter flags.
3464 *) Keep cipherlists sorted in the source instead of sorting them at
3465 runtime, thus removing the need for a lock.
3468 *) Avoid some small subgroup attacks in Diffie-Hellman.
3469 [Nick Mathewson and Ben Laurie]
3471 *) Add functions for well-known primes.
3474 *) Extended Windows CE support.
3475 [Satoshi Nakamura and Andy Polyakov]
3477 *) Initialize SSL_METHOD structures at compile time instead of during
3478 runtime, thus removing the need for a lock.
3481 *) Make PKCS7_decrypt() work even if no certificate is supplied by
3482 attempting to decrypt each encrypted key in turn. Add support to
3486 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
3488 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
3491 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
3494 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
3495 key into the same file any more.
3498 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
3501 *) Add -utf8 command line and config file option to 'ca'.
3502 [Stefan <stf@udoma.org]
3504 *) Removed the macro des_crypt(), as it seems to conflict with some
3505 libraries. Use DES_crypt().
3508 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
3509 involves renaming the source and generated shared-libs for
3510 both. The engines will accept the corrected or legacy ids
3511 ('ncipher' and '4758_cca' respectively) when binding. NB,
3512 this only applies when building 'shared'.
3513 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
3515 *) Add attribute functions to EVP_PKEY structure. Modify
3516 PKCS12_create() to recognize a CSP name attribute and
3517 use it. Make -CSP option work again in pkcs12 utility.
3520 *) Add new functionality to the bn blinding code:
3521 - automatic re-creation of the BN_BLINDING parameters after
3522 a fixed number of uses (currently 32)
3523 - add new function for parameter creation
3524 - introduce flags to control the update behaviour of the
3525 BN_BLINDING parameters
3526 - hide BN_BLINDING structure
3527 Add a second BN_BLINDING slot to the RSA structure to improve
3528 performance when a single RSA object is shared among several
3532 *) Add support for DTLS.
3533 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
3535 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
3536 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
3539 *) Remove buggy and incomplete DH cert support from
3540 ssl/ssl_rsa.c and ssl/s3_both.c
3543 *) Use SHA-1 instead of MD5 as the default digest algorithm for
3544 the apps/openssl applications.
3547 *) Compile clean with "-Wall -Wmissing-prototypes
3548 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
3549 DEBUG_SAFESTACK must also be set.
3552 *) Change ./Configure so that certain algorithms can be disabled by default.
3553 The new counterpiece to "no-xxx" is "enable-xxx".
3555 The patented RC5 and MDC2 algorithms will now be disabled unless
3556 "enable-rc5" and "enable-mdc2", respectively, are specified.
3558 (IDEA remains enabled despite being patented. This is because IDEA
3559 is frequently required for interoperability, and there is no license
3560 fee for non-commercial use. As before, "no-idea" can be used to
3561 avoid this algorithm.)
3565 *) Add processing of proxy certificates (see RFC 3820). This work was
3566 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
3567 EGEE (Enabling Grids for E-science in Europe).
3570 *) RC4 performance overhaul on modern architectures/implementations, such
3571 as Intel P4, IA-64 and AMD64.
3574 *) New utility extract-section.pl. This can be used specify an alternative
3575 section number in a pod file instead of having to treat each file as
3576 a separate case in Makefile. This can be done by adding two lines to the
3579 =for comment openssl_section:XXX
3581 The blank line is mandatory.
3585 *) New arguments -certform, -keyform and -pass for s_client and s_server
3586 to allow alternative format key and certificate files and passphrase
3590 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
3591 update associated structures and add various utility functions.
3593 Add new policy related verify parameters, include policy checking in
3594 standard verify code. Enhance 'smime' application with extra parameters
3595 to support policy checking and print out.
3598 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
3599 Nehemiah processors. These extensions support AES encryption in hardware
3600 as well as RNG (though RNG support is currently disabled).
3601 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
3603 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
3606 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
3607 [Andy Polyakov and a number of other people]
3609 *) Improved PowerPC platform support. Most notably BIGNUM assembler
3610 implementation contributed by IBM.
3611 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
3613 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
3614 exponent rather than 'unsigned long'. There is a corresponding change to
3615 the new 'rsa_keygen' element of the RSA_METHOD structure.
3616 [Jelte Jansen, Geoff Thorpe]
3618 *) Functionality for creating the initial serial number file is now
3619 moved from CA.pl to the 'ca' utility with a new option -create_serial.
3621 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
3622 number file to 1, which is bound to cause problems. To avoid
3623 the problems while respecting compatibility between different 0.9.7
3624 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
3625 CA.pl for serial number initialization. With the new release 0.9.8,
3626 we can fix the problem directly in the 'ca' utility.)
3629 *) Reduced header interdepencies by declaring more opaque objects in
3630 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
3631 give fewer recursive includes, which could break lazy source code - so
3632 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
3633 developers should define this symbol when building and using openssl to
3634 ensure they track the recommended behaviour, interfaces, [etc], but
3635 backwards-compatible behaviour prevails when this isn't defined.
3638 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
3641 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
3642 This will generate a random key of the appropriate length based on the
3643 cipher context. The EVP_CIPHER can provide its own random key generation
3644 routine to support keys of a specific form. This is used in the des and
3645 3des routines to generate a key of the correct parity. Update S/MIME
3646 code to use new functions and hence generate correct parity DES keys.
3647 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
3648 valid (weak or incorrect parity).
3651 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
3652 as looking them up. This is useful when the verified structure may contain
3653 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
3654 present unless the new PKCS7_NO_CRL flag is asserted.
3657 *) Extend ASN1 oid configuration module. It now additionally accepts the
3660 shortName = some long name, 1.2.3.4
3663 *) Reimplemented the BN_CTX implementation. There is now no more static
3664 limitation on the number of variables it can handle nor the depth of the
3665 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
3666 information can now expand as required, and rather than having a single
3667 static array of bignums, BN_CTX now uses a linked-list of such arrays
3668 allowing it to expand on demand whilst maintaining the usefulness of
3669 BN_CTX's "bundling".
3672 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
3673 to allow all RSA operations to function using a single BN_CTX.
3676 *) Preliminary support for certificate policy evaluation and checking. This
3677 is initially intended to pass the tests outlined in "Conformance Testing
3678 of Relying Party Client Certificate Path Processing Logic" v1.07.
3681 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
3682 remained unused and not that useful. A variety of other little bignum
3683 tweaks and fixes have also been made continuing on from the audit (see
3687 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
3688 associated ASN1, EVP and SSL functions and old ASN1 macros.
3691 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
3692 and this should never fail. So the return value from the use of
3693 BN_set_word() (which can fail due to needless expansion) is now deprecated;
3694 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
3697 *) BN_CTX_get() should return zero-valued bignums, providing the same
3698 initialised value as BN_new().
3699 [Geoff Thorpe, suggested by Ulf Möller]
3701 *) Support for inhibitAnyPolicy certificate extension.
3704 *) An audit of the BIGNUM code is underway, for which debugging code is
3705 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
3706 is considered valid when processing BIGNUMs, and causes execution to
3707 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
3708 further steps are taken to deliberately pollute unused data in BIGNUM
3709 structures to try and expose faulty code further on. For now, openssl will
3710 (in its default mode of operation) continue to tolerate the inconsistent
3711 forms that it has tolerated in the past, but authors and packagers should
3712 consider trying openssl and their own applications when compiled with
3713 these debugging symbols defined. It will help highlight potential bugs in
3714 their own code, and will improve the test coverage for OpenSSL itself. At
3715 some point, these tighter rules will become openssl's default to improve
3716 maintainability, though the assert()s and other overheads will remain only
3717 in debugging configurations. See bn.h for more details.
3718 [Geoff Thorpe, Nils Larsch, Ulf Möller]
3720 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
3721 that can only be obtained through BN_CTX_new() (which implicitly
3722 initialises it). The presence of this function only made it possible
3723 to overwrite an existing structure (and cause memory leaks).
3726 *) Because of the callback-based approach for implementing LHASH as a
3727 template type, lh_insert() adds opaque objects to hash-tables and
3728 lh_doall() or lh_doall_arg() are typically used with a destructor callback
3729 to clean up those corresponding objects before destroying the hash table
3730 (and losing the object pointers). So some over-zealous constifications in
3731 LHASH have been relaxed so that lh_insert() does not take (nor store) the
3732 objects as "const" and the lh_doall[_arg] callback wrappers are not
3733 prototyped to have "const" restrictions on the object pointers they are
3734 given (and so aren't required to cast them away any more).
3737 *) The tmdiff.h API was so ugly and minimal that our own timing utility
3738 (speed) prefers to use its own implementation. The two implementations
3739 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
3740 its object type properly exposed (MS_TM) instead of casting to/from "char
3741 *". This may still change yet if someone realises MS_TM and "ms_time_***"
3742 aren't necessarily the greatest nomenclatures - but this is what was used
3743 internally to the implementation so I've used that for now.
3746 *) Ensure that deprecated functions do not get compiled when
3747 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
3748 the self-tests were still using deprecated key-generation functions so
3749 these have been updated also.
3752 *) Reorganise PKCS#7 code to separate the digest location functionality
3753 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
3754 New function PKCS7_set_digest() to set the digest type for PKCS#7
3755 digestedData type. Add additional code to correctly generate the
3756 digestedData type and add support for this type in PKCS7 initialization
3760 *) New function PKCS7_set0_type_other() this initializes a PKCS7
3761 structure of type "other".
3764 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
3765 sure the loop does correctly stop and breaking ("division by zero")
3766 modulus operations are not performed. The (pre-generated) prime
3767 table crypto/bn/bn_prime.h was already correct, but it could not be
3768 re-generated on some platforms because of the "division by zero"
3769 situation in the script.
3770 [Ralf S. Engelschall]
3772 *) Update support for ECC-based TLS ciphersuites according to
3773 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
3774 SHA-1 now is only used for "small" curves (where the
3775 representation of a field element takes up to 24 bytes); for
3776 larger curves, the field element resulting from ECDH is directly
3777 used as premaster secret.
3778 [Douglas Stebila (Sun Microsystems Laboratories)]
3780 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
3781 curve secp160r1 to the tests.
3782 [Douglas Stebila (Sun Microsystems Laboratories)]
3784 *) Add the possibility to load symbols globally with DSO.
3785 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
3787 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
3788 control of the error stack.
3791 *) Add support for STORE in ENGINE.
3794 *) Add the STORE type. The intention is to provide a common interface
3795 to certificate and key stores, be they simple file-based stores, or
3796 HSM-type store, or LDAP stores, or...
3797 NOTE: The code is currently UNTESTED and isn't really used anywhere.
3800 *) Add a generic structure called OPENSSL_ITEM. This can be used to
3801 pass a list of arguments to any function as well as provide a way
3802 for a function to pass data back to the caller.
3805 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
3806 works like BUF_strdup() but can be used to duplicate a portion of
3807 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
3811 *) Add the function sk_find_ex() which works like sk_find(), but will
3812 return an index to an element even if an exact match couldn't be
3813 found. The index is guaranteed to point at the element where the
3814 searched-for key would be inserted to preserve sorting order.
3817 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
3818 takes an extra flags argument for optional functionality. Currently,
3819 the following flags are defined:
3821 OBJ_BSEARCH_VALUE_ON_NOMATCH
3822 This one gets OBJ_bsearch_ex() to return a pointer to the first
3823 element where the comparing function returns a negative or zero
3826 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
3827 This one gets OBJ_bsearch_ex() to return a pointer to the first
3828 element where the comparing function returns zero. This is useful
3829 if there are more than one element where the comparing function
3833 *) Make it possible to create self-signed certificates with 'openssl ca'
3834 in such a way that the self-signed certificate becomes part of the
3835 CA database and uses the same mechanisms for serial number generation
3836 as all other certificate signing. The new flag '-selfsign' enables
3837 this functionality. Adapt CA.sh and CA.pl.in.
3840 *) Add functionality to check the public key of a certificate request
3841 against a given private. This is useful to check that a certificate
3842 request can be signed by that key (self-signing).
3845 *) Make it possible to have multiple active certificates with the same
3846 subject in the CA index file. This is done only if the keyword
3847 'unique_subject' is set to 'no' in the main CA section (default
3848 if 'CA_default') of the configuration file. The value is saved
3849 with the database itself in a separate index attribute file,
3850 named like the index file with '.attr' appended to the name.
3853 *) Generate muti valued AVAs using '+' notation in config files for
3857 *) Support for nameConstraints certificate extension.
3860 *) Support for policyConstraints certificate extension.
3863 *) Support for policyMappings certificate extension.
3866 *) Make sure the default DSA_METHOD implementation only uses its
3867 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
3868 and change its own handlers to be NULL so as to remove unnecessary
3869 indirection. This lets alternative implementations fallback to the
3870 default implementation more easily.
3873 *) Support for directoryName in GeneralName related extensions
3877 *) Make it possible to link applications using Makefile.shared.
3878 Make that possible even when linking against static libraries!
3881 *) Support for single pass processing for S/MIME signing. This now
3882 means that S/MIME signing can be done from a pipe, in addition
3883 cleartext signing (multipart/signed type) is effectively streaming
3884 and the signed data does not need to be all held in memory.
3886 This is done with a new flag PKCS7_STREAM. When this flag is set
3887 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
3888 is done after the data is output (and digests calculated) in
3889 SMIME_write_PKCS7().
3892 *) Add full support for -rpath/-R, both in shared libraries and
3893 applications, at least on the platforms where it's known how
3897 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
3898 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
3899 will now compute a table of multiples of the generator that
3900 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
3901 faster (notably in the case of a single point multiplication,
3902 scalar * generator).
3903 [Nils Larsch, Bodo Moeller]
3905 *) IPv6 support for certificate extensions. The various extensions
3906 which use the IP:a.b.c.d can now take IPv6 addresses using the
3907 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
3911 *) Added an ENGINE that implements RSA by performing private key
3912 exponentiations with the GMP library. The conversions to and from
3913 GMP's mpz_t format aren't optimised nor are any montgomery forms
3914 cached, and on x86 it appears OpenSSL's own performance has caught up.
3915 However there are likely to be other architectures where GMP could
3916 provide a boost. This ENGINE is not built in by default, but it can be
3917 specified at Configure time and should be accompanied by the necessary
3918 linker additions, eg;
3919 ./config -DOPENSSL_USE_GMP -lgmp
3922 *) "openssl engine" will not display ENGINE/DSO load failure errors when
3923 testing availability of engines with "-t" - the old behaviour is
3924 produced by increasing the feature's verbosity with "-tt".
3927 *) ECDSA routines: under certain error conditions uninitialized BN objects
3928 could be freed. Solution: make sure initialization is performed early
3929 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
3933 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
3934 and DH_METHOD (eg. by ENGINE implementations) to override the normal
3935 software implementations. For DSA and DH, parameter generation can
3936 also be overriden by providing the appropriate method callbacks.
3939 *) Change the "progress" mechanism used in key-generation and
3940 primality testing to functions that take a new BN_GENCB pointer in
3941 place of callback/argument pairs. The new API functions have "_ex"
3942 postfixes and the older functions are reimplemented as wrappers for
3943 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
3944 declarations of the old functions to help (graceful) attempts to
3945 migrate to the new functions. Also, the new key-generation API
3946 functions operate on a caller-supplied key-structure and return
3947 success/failure rather than returning a key or NULL - this is to
3948 help make "keygen" another member function of RSA_METHOD etc.
3950 Example for using the new callback interface:
3952 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
3956 BN_GENCB_set(&my_cb, my_callback, my_arg);
3958 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
3959 /* For the meaning of a, b in calls to my_callback(), see the
3960 * documentation of the function that calls the callback.
3961 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
3962 * my_callback should return 1 if it wants BN_is_prime_ex()
3963 * to continue, or 0 to stop.
3968 *) Change the ZLIB compression method to be stateful, and make it
3969 available to TLS with the number defined in
3970 draft-ietf-tls-compression-04.txt.
3973 *) Add the ASN.1 structures and functions for CertificatePair, which
3974 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
3976 CertificatePair ::= SEQUENCE {
3977 forward [0] Certificate OPTIONAL,
3978 reverse [1] Certificate OPTIONAL,
3979 -- at least one of the pair shall be present -- }
3981 Also implement the PEM functions to read and write certificate
3982 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
3984 This needed to be defined, mostly for the sake of the LDAP
3985 attribute crossCertificatePair, but may prove useful elsewhere as
3989 *) Make it possible to inhibit symlinking of shared libraries in
3990 Makefile.shared, for Cygwin's sake.
3993 *) Extend the BIGNUM API by creating a function
3994 void BN_set_negative(BIGNUM *a, int neg);
3995 and a macro that behave like
3996 int BN_is_negative(const BIGNUM *a);
3998 to avoid the need to access 'a->neg' directly in applications.
4001 *) Implement fast modular reduction for pseudo-Mersenne primes
4002 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
4003 EC_GROUP_new_curve_GFp() will now automatically use this
4005 [Nils Larsch <nla@trustcenter.de>]
4007 *) Add new lock type (CRYPTO_LOCK_BN).
4010 *) Change the ENGINE framework to automatically load engines
4011 dynamically from specific directories unless they could be
4012 found to already be built in or loaded. Move all the
4013 current engines except for the cryptodev one to a new
4015 The engines in engines/ are built as shared libraries if
4016 the "shared" options was given to ./Configure or ./config.
4017 Otherwise, they are inserted in libcrypto.a.
4018 /usr/local/ssl/engines is the default directory for dynamic
4019 engines, but that can be overriden at configure time through
4020 the usual use of --prefix and/or --openssldir, and at run
4021 time with the environment variable OPENSSL_ENGINES.
4022 [Geoff Thorpe and Richard Levitte]
4024 *) Add Makefile.shared, a helper makefile to build shared
4025 libraries. Adapt Makefile.org.
4028 *) Add version info to Win32 DLLs.
4029 [Peter 'Luna' Runestig" <peter@runestig.com>]
4031 *) Add new 'medium level' PKCS#12 API. Certificates and keys
4032 can be added using this API to created arbitrary PKCS#12
4033 files while avoiding the low level API.
4035 New options to PKCS12_create(), key or cert can be NULL and
4036 will then be omitted from the output file. The encryption
4037 algorithm NIDs can be set to -1 for no encryption, the mac
4038 iteration count can be set to 0 to omit the mac.
4040 Enhance pkcs12 utility by making the -nokeys and -nocerts
4041 options work when creating a PKCS#12 file. New option -nomac
4042 to omit the mac, NONE can be set for an encryption algorithm.
4043 New code is modified to use the enhanced PKCS12_create()
4044 instead of the low level API.
4047 *) Extend ASN1 encoder to support indefinite length constructed
4048 encoding. This can output sequences tags and octet strings in
4049 this form. Modify pk7_asn1.c to support indefinite length
4050 encoding. This is experimental and needs additional code to
4051 be useful, such as an ASN1 bio and some enhanced streaming
4054 Extend template encode functionality so that tagging is passed
4055 down to the template encoder.
4058 *) Let 'openssl req' fail if an argument to '-newkey' is not
4059 recognized instead of using RSA as a default.
4062 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
4063 As these are not official, they are not included in "ALL";
4064 the "ECCdraft" ciphersuite group alias can be used to select them.
4065 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
4067 *) Add ECDH engine support.
4068 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
4070 *) Add ECDH in new directory crypto/ecdh/.
4071 [Douglas Stebila (Sun Microsystems Laboratories)]
4073 *) Let BN_rand_range() abort with an error after 100 iterations
4074 without success (which indicates a broken PRNG).
4077 *) Change BN_mod_sqrt() so that it verifies that the input value
4078 is really the square of the return value. (Previously,
4079 BN_mod_sqrt would show GIGO behaviour.)
4082 *) Add named elliptic curves over binary fields from X9.62, SECG,
4083 and WAP/WTLS; add OIDs that were still missing.
4085 [Sheueling Chang Shantz and Douglas Stebila
4086 (Sun Microsystems Laboratories)]
4088 *) Extend the EC library for elliptic curves over binary fields
4089 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
4092 EC_GF2m_simple_method
4096 EC_GROUP_new_curve_GF2m
4097 EC_GROUP_set_curve_GF2m
4098 EC_GROUP_get_curve_GF2m
4099 EC_POINT_set_affine_coordinates_GF2m
4100 EC_POINT_get_affine_coordinates_GF2m
4101 EC_POINT_set_compressed_coordinates_GF2m
4103 Point compression for binary fields is disabled by default for
4104 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
4107 As binary polynomials are represented as BIGNUMs, various members
4108 of the EC_GROUP and EC_POINT data structures can be shared
4109 between the implementations for prime fields and binary fields;
4110 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
4111 are essentially identical to their ..._GFp counterparts.
4112 (For simplicity, the '..._GFp' prefix has been dropped from
4113 various internal method names.)
4115 An internal 'field_div' method (similar to 'field_mul' and
4116 'field_sqr') has been added; this is used only for binary fields.
4118 [Sheueling Chang Shantz and Douglas Stebila
4119 (Sun Microsystems Laboratories)]
4121 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
4122 through methods ('mul', 'precompute_mult').
4124 The generic implementations (now internally called 'ec_wNAF_mul'
4125 and 'ec_wNAF_precomputed_mult') remain the default if these
4126 methods are undefined.
4128 [Sheueling Chang Shantz and Douglas Stebila
4129 (Sun Microsystems Laboratories)]
4131 *) New function EC_GROUP_get_degree, which is defined through
4132 EC_METHOD. For curves over prime fields, this returns the bit
4133 length of the modulus.
4135 [Sheueling Chang Shantz and Douglas Stebila
4136 (Sun Microsystems Laboratories)]
4138 *) New functions EC_GROUP_dup, EC_POINT_dup.
4139 (These simply call ..._new and ..._copy).
4141 [Sheueling Chang Shantz and Douglas Stebila
4142 (Sun Microsystems Laboratories)]
4144 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
4145 Polynomials are represented as BIGNUMs (where the sign bit is not
4146 used) in the following functions [macros]:
4149 BN_GF2m_sub [= BN_GF2m_add]
4150 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
4151 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
4152 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
4154 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
4155 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
4156 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
4157 BN_GF2m_cmp [= BN_ucmp]
4159 (Note that only the 'mod' functions are actually for fields GF(2^m).
4160 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
4162 For some functions, an the irreducible polynomial defining a
4163 field can be given as an 'unsigned int[]' with strictly
4164 decreasing elements giving the indices of those bits that are set;
4165 i.e., p[] represents the polynomial
4166 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
4168 p[0] > p[1] > ... > p[k] = 0.
4169 This applies to the following functions:
4174 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
4175 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
4177 BN_GF2m_mod_sqrt_arr
4178 BN_GF2m_mod_solve_quad_arr
4182 Conversion can be performed by the following functions:
4187 bntest.c has additional tests for binary polynomial arithmetic.
4189 Two implementations for BN_GF2m_mod_div() are available.
4190 The default algorithm simply uses BN_GF2m_mod_inv() and
4191 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
4192 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
4193 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
4195 [Sheueling Chang Shantz and Douglas Stebila
4196 (Sun Microsystems Laboratories)]
4198 *) Add new error code 'ERR_R_DISABLED' that can be used when some
4199 functionality is disabled at compile-time.
4200 [Douglas Stebila <douglas.stebila@sun.com>]
4202 *) Change default behaviour of 'openssl asn1parse' so that more
4203 information is visible when viewing, e.g., a certificate:
4205 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
4206 mode the content of non-printable OCTET STRINGs is output in a
4207 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
4208 avoid the appearance of a printable string.
4209 [Nils Larsch <nla@trustcenter.de>]
4211 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
4213 EC_GROUP_set_asn1_flag()
4214 EC_GROUP_get_asn1_flag()
4215 EC_GROUP_set_point_conversion_form()
4216 EC_GROUP_get_point_conversion_form()
4217 These control ASN1 encoding details:
4218 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
4219 has been set to OPENSSL_EC_NAMED_CURVE.
4220 - Points are encoded in uncompressed form by default; options for
4221 asn1_for are as for point2oct, namely
4222 POINT_CONVERSION_COMPRESSED
4223 POINT_CONVERSION_UNCOMPRESSED
4224 POINT_CONVERSION_HYBRID
4226 Also add 'seed' and 'seed_len' members to EC_GROUP with access
4229 EC_GROUP_get0_seed()
4230 EC_GROUP_get_seed_len()
4231 This is used only for ASN1 purposes (so far).
4232 [Nils Larsch <nla@trustcenter.de>]
4234 *) Add 'field_type' member to EC_METHOD, which holds the NID
4235 of the appropriate field type OID. The new function
4236 EC_METHOD_get_field_type() returns this value.
4237 [Nils Larsch <nla@trustcenter.de>]
4242 EC_POINT_point2hex()
4243 EC_POINT_hex2point()
4244 providing useful interfaces to EC_POINT_point2oct() and
4245 EC_POINT_oct2point().
4246 [Nils Larsch <nla@trustcenter.de>]
4248 *) Change internals of the EC library so that the functions
4249 EC_GROUP_set_generator()
4250 EC_GROUP_get_generator()
4251 EC_GROUP_get_order()
4252 EC_GROUP_get_cofactor()
4253 are implemented directly in crypto/ec/ec_lib.c and not dispatched
4254 to methods, which would lead to unnecessary code duplication when
4255 adding different types of curves.
4256 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
4258 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
4259 arithmetic, and such that modified wNAFs are generated
4260 (which avoid length expansion in many cases).
4263 *) Add a function EC_GROUP_check_discriminant() (defined via
4264 EC_METHOD) that verifies that the curve discriminant is non-zero.
4266 Add a function EC_GROUP_check() that makes some sanity tests
4267 on a EC_GROUP, its generator and order. This includes
4268 EC_GROUP_check_discriminant().
4269 [Nils Larsch <nla@trustcenter.de>]
4271 *) Add ECDSA in new directory crypto/ecdsa/.
4273 Add applications 'openssl ecparam' and 'openssl ecdsa'
4274 (these are based on 'openssl dsaparam' and 'openssl dsa').
4276 ECDSA support is also included in various other files across the
4277 library. Most notably,
4278 - 'openssl req' now has a '-newkey ecdsa:file' option;
4279 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
4280 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
4281 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
4282 them suitable for ECDSA where domain parameters must be
4283 extracted before the specific public key;
4284 - ECDSA engine support has been added.
4285 [Nils Larsch <nla@trustcenter.de>]
4287 *) Include some named elliptic curves, and add OIDs from X9.62,
4288 SECG, and WAP/WTLS. Each curve can be obtained from the new
4290 EC_GROUP_new_by_curve_name(),
4291 and the list of available named curves can be obtained with
4292 EC_get_builtin_curves().
4293 Also add a 'curve_name' member to EC_GROUP objects, which can be
4295 EC_GROUP_set_curve_name()
4296 EC_GROUP_get_curve_name()
4297 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
4299 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
4300 was actually never needed) and in BN_mul(). The removal in BN_mul()
4301 required a small change in bn_mul_part_recursive() and the addition
4302 of the functions bn_cmp_part_words(), bn_sub_part_words() and
4303 bn_add_part_words(), which do the same thing as bn_cmp_words(),
4304 bn_sub_words() and bn_add_words() except they take arrays with
4308 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
4310 *) Cleanse PEM buffers before freeing them since they may contain
4312 [Benjamin Bennett <ben@psc.edu>]
4314 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
4315 a ciphersuite string such as "DEFAULT:RSA" cannot enable
4316 authentication-only ciphersuites.
4319 *) Since AES128 and AES256 share a single mask bit in the logic of
4320 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
4321 kludge to work properly if AES128 is available and AES256 isn't.
4324 *) Expand security boundary to match 1.1.1 module.
4327 *) Remove redundant features: hash file source, editing of test vectors
4328 modify fipsld to use external fips_premain.c signature.
4331 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
4332 run algorithm test programs.
4335 *) Make algorithm test programs more tolerant of whitespace.
4338 *) Have SSL/TLS server implementation tolerate "mismatched" record
4339 protocol version while receiving ClientHello even if the
4340 ClientHello is fragmented. (The server can't insist on the
4341 particular protocol version it has chosen before the ServerHello
4342 message has informed the client about his choice.)
4345 *) Load error codes if they are not already present instead of using a
4346 static variable. This allows them to be cleanly unloaded and reloaded.
4349 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
4351 *) Introduce limits to prevent malicious keys being able to
4352 cause a denial of service. (CVE-2006-2940)
4353 [Steve Henson, Bodo Moeller]
4355 *) Fix ASN.1 parsing of certain invalid structures that can result
4356 in a denial of service. (CVE-2006-2937) [Steve Henson]
4358 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
4359 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
4361 *) Fix SSL client code which could crash if connecting to a
4362 malicious SSLv2 server. (CVE-2006-4343)
4363 [Tavis Ormandy and Will Drewry, Google Security Team]
4365 *) Change ciphersuite string processing so that an explicit
4366 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
4367 will no longer include "AES128-SHA"), and any other similar
4368 ciphersuite (same bitmap) from *other* protocol versions (so that
4369 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
4370 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
4371 changes from 0.9.8b and 0.9.8d.
4374 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
4376 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
4377 (CVE-2006-4339) [Ben Laurie and Google Security Team]
4379 *) Change the Unix randomness entropy gathering to use poll() when
4380 possible instead of select(), since the latter has some
4381 undesirable limitations.
4382 [Darryl Miles via Richard Levitte and Bodo Moeller]
4384 *) Disable rogue ciphersuites:
4386 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
4387 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
4388 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
4390 The latter two were purportedly from
4391 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
4394 Also deactive the remaining ciphersuites from
4395 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
4396 unofficial, and the ID has long expired.
4399 *) Fix RSA blinding Heisenbug (problems sometimes occured on
4400 dual-core machines) and other potential thread-safety issues.
4403 Changes between 0.9.7i and 0.9.7j [04 May 2006]
4405 *) Adapt fipsld and the build system to link against the validated FIPS
4406 module in FIPS mode.
4409 *) Fixes for VC++ 2005 build under Windows.
4412 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
4413 from a Windows bash shell such as MSYS. It is autodetected from the
4414 "config" script when run from a VC++ environment. Modify standard VC++
4415 build to use fipscanister.o from the GNU make build.
4418 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
4420 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
4421 The value now differs depending on if you build for FIPS or not.
4422 BEWARE! A program linked with a shared FIPSed libcrypto can't be
4423 safely run with a non-FIPSed libcrypto, as it may crash because of
4424 the difference induced by this change.
projects / openssl.git / blob