5 This is a high-level summary of the most important changes.
6 For a full list of changes, see the git commit log; for example,
7 https://github.com/openssl/openssl/commits/ and pick the appropriate
10 Changes between 1.1.1 and 3.0.0 [xx XXX xxxx]
12 *) Introduced the new functions EVP_DigestSignInit_ex() and
13 EVP_DigestVerifyInit_ex(). The macros EVP_DigestSignUpdate() and
14 EVP_DigestVerifyUpdate() have been converted to functions. See the man
15 pages for further details.
18 *) Over two thousand fixes were made to the documentation, including:
19 adding missing command flags, better style conformance, documentation
21 [Rich Salz, Richard Levitte]
23 *) s390x assembly pack: add hardware-support for P-256, P-384, P-521,
24 X25519, X448, Ed25519 and Ed448.
27 *) Print all values for a PKCS#12 attribute with 'openssl pkcs12', not just
31 *) Deprecated the public definition of ERR_STATE as well as the function
32 ERR_get_state(). This is done in preparation of making ERR_STATE an
36 *) Added ERR functionality to give callers access to the stored function
37 names that have replaced the older function code based functions.
39 New functions are ERR_get_error_func(), ERR_peek_error_func(),
40 ERR_peek_last_error_func(), ERR_get_error_data(), ERR_peek_error_data(),
41 ERR_peek_last_error_data(), ERR_get_error_all(), ERR_peek_error_all()
42 and ERR_peek_last_error_all().
44 These functions have become deprecated: ERR_get_error_line_data(),
45 ERR_peek_error_line_data(), ERR_peek_last_error_line_data() and
46 ERR_func_error_string().
49 *) Extended testing to be verbose for failing tests only. The make variables
50 VERBOSE_FAILURE or VF can be used to enable this:
52 $ make VF=1 test # Unix
53 $ mms /macro=(VF=1) test ! OpenVMS
54 $ nmake VF=1 test # Windows
58 *) For built-in EC curves, ensure an EC_GROUP built from the curve name is
59 used even when parsing explicit parameters, when loading a serialized key
60 or calling `EC_GROUP_new_from_ecpkparameters()`/
61 `EC_GROUP_new_from_ecparameters()`.
62 This prevents bypass of security hardening and performance gains,
63 especially for curves with specialized EC_METHODs.
64 By default, if a key encoded with explicit parameters is loaded and later
65 serialized, the output is still encoded with explicit parameters, even if
66 internally a "named" EC_GROUP is used for computation.
69 *) Compute ECC cofactors if not provided during EC_GROUP construction. Before
70 this change, EC_GROUP_set_generator would accept order and/or cofactor as
71 NULL. After this change, only the cofactor parameter can be NULL. It also
72 does some minimal sanity checks on the passed order.
76 *) Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey.
77 An attack is simple, if the first CMS_recipientInfo is valid but the
78 second CMS_recipientInfo is chosen ciphertext. If the second
79 recipientInfo decodes to PKCS #1 v1.5 form plaintext, the correct
80 encryption key will be replaced by garbage, and the message cannot be
81 decoded, but if the RSA decryption fails, the correct encryption key is
82 used and the recipient will not notice the attack.
83 As a work around for this potential attack the length of the decrypted
84 key must be equal to the cipher default key length, in case the
85 certifiate is not given and all recipientInfo are tried out.
86 The old behaviour can be re-enabled in the CMS code by setting the
87 CMS_DEBUG_DECRYPT flag.
90 *) Early start up entropy quality from the DEVRANDOM seed source has been
91 improved for older Linux systems. The RAND subsystem will wait for
92 /dev/random to be producing output before seeding from /dev/urandom.
93 The seeded state is stored for future library initialisations using
94 a system global shared memory segment. The shared memory identifier
95 can be configured by defining OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID to
96 the desired value. The default identifier is 114.
99 *) Revised BN_generate_prime_ex to not avoid factors 2..17863 in p-1
100 when primes for RSA keys are computed.
101 Since we previously always generated primes == 2 (mod 3) for RSA keys,
102 the 2-prime and 3-prime RSA modules were easy to distinguish, since
103 N = p*q = 1 (mod 3), but N = p*q*r = 2 (mod 3). Therefore fingerprinting
104 2-prime vs. 3-prime RSA keys was possible by computing N mod 3.
105 This avoids possible fingerprinting of newly generated RSA modules.
108 *) Correct the extended master secret constant on EBCDIC systems. Without this
109 fix TLS connections between an EBCDIC system and a non-EBCDIC system that
110 negotiate EMS will fail. Unfortunately this also means that TLS connections
111 between EBCDIC systems with this fix, and EBCDIC systems without this
112 fix will fail if they negotiate EMS.
115 *) Changed the library initialisation so that the config file is now loaded
116 by default. This was already the case for libssl. It now occurs for both
117 libcrypto and libssl. Use the OPENSSL_INIT_NO_LOAD_CONFIG option to
118 OPENSSL_init_crypto() to suppress automatic loading of a config file.
121 *) Introduced new error raising macros, ERR_raise() and ERR_raise_data(),
122 where the former acts as a replacement for ERR_put_error(), and the
123 latter replaces the combination ERR_put_error()+ERR_add_error_data().
124 ERR_raise_data() adds more flexibility by taking a format string and
125 an arbitrary number of arguments following it, to be processed with
129 *) Introduced a new function, OSSL_PROVIDER_available(), which can be used
130 to check if a named provider is loaded and available. When called, it
131 will also activate all fallback providers if such are still present.
134 *) Enforce a minimum DH modulus size of 512 bits.
137 *) Changed DH parameters to generate the order q subgroup instead of 2q.
138 Previously generated DH parameters are still accepted by DH_check
139 but DH_generate_key works around that by clearing bit 0 of the
140 private key for those. This avoids leaking bit 0 of the private key.
143 *) Significantly reduce secure memory usage by the randomness pools.
146 *) {CRYPTO,OPENSSL}_mem_debug_{push,pop} are now no-ops and have been
150 *) A new type, EVP_KEYEXCH, has been introduced to represent key exchange
151 algorithms. An implementation of a key exchange algorithm can be obtained
152 by using the function EVP_KEYEXCH_fetch(). An EVP_KEYEXCH algorithm can be
153 used in a call to EVP_PKEY_derive_init_ex() which works in a similar way to
154 the older EVP_PKEY_derive_init() function. See the man pages for the new
155 functions for further details.
158 *) The EVP_PKEY_CTX_set_dh_pad() macro has now been converted to a function.
161 *) Removed the function names from error messages and deprecated the
164 *) Removed NextStep support and the macro OPENSSL_UNISTD
167 *) Removed DES_check_key. Also removed OPENSSL_IMPLEMENT_GLOBAL,
168 OPENSSL_GLOBAL_REF, OPENSSL_DECLARE_GLOBAL.
169 Also removed "export var as function" capability; we do not export
170 variables, only functions.
173 *) RC5_32_set_key has been changed to return an int type, with 0 indicating
174 an error and 1 indicating success. In previous versions of OpenSSL this
175 was a void type. If a key was set longer than the maximum possible this
179 *) Support SM2 signing and verification schemes with X509 certificate.
182 *) Use SHA256 as the default digest for TS query in the ts app.
185 *) Change PBKDF2 to conform to SP800-132 instead of the older PKCS5 RFC2898.
186 This checks that the salt length is at least 128 bits, the derived key
187 length is at least 112 bits, and that the iteration count is at least 1000.
188 For backwards compatibility these checks are disabled by default in the
189 default provider, but are enabled by default in the fips provider.
190 To enable or disable these checks use the control
191 EVP_KDF_CTRL_SET_PBKDF2_PKCS5_MODE.
194 *) Default cipher lists/suites are now available via a function, the
195 #defines are deprecated.
198 *) Add target VC-WIN32-UWP, VC-WIN64A-UWP, VC-WIN32-ARM-UWP and
199 VC-WIN64-ARM-UWP in Windows OneCore target for making building libraries
200 for Windows Store apps easier. Also, the "no-uplink" option has been added.
203 *) Join the directories crypto/x509 and crypto/x509v3
206 *) Change the default RSA, DSA and DH size to 2048 bit instead of 1024.
207 This changes the size when using the genpkey app when no size is given. It
208 fixes an omission in earlier changes that changed all RSA, DSA and DH
209 generation apps to use 2048 bits by default.
212 *) Added command 'openssl kdf' that uses the EVP_KDF API.
215 *) Added command 'openssl mac' that uses the EVP_MAC API.
218 *) Added OPENSSL_info() to get diverse built-in OpenSSL data, such
219 as default directories. Also added the command 'openssl info'
220 for scripting purposes.
223 *) The functions AES_ige_encrypt() and AES_bi_ige_encrypt() have been
224 deprecated. These undocumented functions were never integrated into the EVP
225 layer and implement the AES Infinite Garble Extension (IGE) mode and AES
226 Bi-directional IGE mode. These modes were never formally standardised and
227 usage of these functions is believed to be very small. In particular
228 AES_bi_ige_encrypt() has a known bug. It accepts 2 AES keys, but only one
229 is ever used. The security implications are believed to be minimal, but
230 this issue was never fixed for backwards compatibility reasons. New code
231 should not use these modes.
234 *) Add prediction resistance to the DRBG reseeding process.
237 *) Limit the number of blocks in a data unit for AES-XTS to 2^20 as
238 mandated by IEEE Std 1619-2018.
241 *) Added newline escaping functionality to a filename when using openssl dgst.
242 This output format is to replicate the output format found in the '*sum'
243 checksum programs. This aims to preserve backward compatibility.
244 [Matt Eaton, Richard Levitte, and Paul Dale]
246 *) Removed the heartbeat message in DTLS feature, as it has very
247 little usage and doesn't seem to fulfill a valuable purpose.
248 The configuration option is now deprecated.
251 *) Changed the output of 'openssl {digestname} < file' to display the
252 digest name in its output.
255 *) Added a new generic trace API which provides support for enabling
256 instrumentation through trace output. This feature is mainly intended
257 as an aid for developers and is disabled by default. To utilize it,
258 OpenSSL needs to be configured with the `enable-trace` option.
260 If the tracing API is enabled, the application can activate trace output
261 by registering BIOs as trace channels for a number of tracing and debugging
264 The 'openssl' application has been expanded to enable any of the types
265 available via environment variables defined by the user, and serves as
266 one possible example on how to use this functionality.
267 [Richard Levitte & Matthias St. Pierre]
269 *) Added build tests for C++. These are generated files that only do one
270 thing, to include one public OpenSSL head file each. This tests that
271 the public header files can be usefully included in a C++ application.
273 This test isn't enabled by default. It can be enabled with the option
274 'enable-buildtest-c++'.
277 *) Add Single Step KDF (EVP_KDF_SS) to EVP_KDF.
280 *) Add KMAC to EVP_MAC.
283 *) Added property based algorithm implementation selection framework to
287 *) Added SCA hardening for modular field inversion in EC_GROUP through
288 a new dedicated field_inv() pointer in EC_METHOD.
289 This also addresses a leakage affecting conversions from projective
290 to affine coordinates.
291 [Billy Bob Brumley, Nicola Tuveri]
293 *) Added EVP_KDF, an EVP layer KDF API, to simplify adding KDF and PRF
294 implementations. This includes an EVP_PKEY to EVP_KDF bridge for
295 those algorithms that were already supported through the EVP_PKEY API
296 (scrypt, TLS1 PRF and HKDF). The low-level KDF functions for PBKDF2
297 and scrypt are now wrappers that call EVP_KDF.
300 *) Build devcrypto engine as a dynamic engine.
303 *) Add keyed BLAKE2 to EVP_MAC.
306 *) Fix a bug in the computation of the endpoint-pair shared secret used
307 by DTLS over SCTP. This breaks interoperability with older versions
308 of OpenSSL like OpenSSL 1.1.0 and OpenSSL 1.0.2. There is a runtime
309 switch SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG (off by default) enabling
310 interoperability with such broken implementations. However, enabling
311 this switch breaks interoperability with correct implementations.
313 *) Fix a use after free bug in d2i_X509_PUBKEY when overwriting a
314 re-used X509_PUBKEY object if the second PUBKEY is malformed.
317 *) Move strictness check from EVP_PKEY_asn1_new() to EVP_PKEY_asn1_add0().
320 *) Change the license to the Apache License v2.0.
323 *) Change the possible version information given with OPENSSL_API_COMPAT.
324 It may be a pre-3.0.0 style numerical version number as it was defined
325 in 1.1.0, and it may also simply take the major version number.
327 Because of the version numbering of pre-3.0.0 releases, the values 0,
328 1 and 2 are equivalent to 0x00908000L (0.9.8), 0x10000000L (1.0.0) and
329 0x10100000L (1.1.0), respectively.
332 *) Switch to a new version scheme using three numbers MAJOR.MINOR.PATCH.
334 o Major releases (indicated by incrementing the MAJOR release number)
335 may introduce incompatible API/ABI changes.
336 o Minor releases (indicated by incrementing the MINOR release number)
337 may introduce new features but retain API/ABI compatibility.
338 o Patch releases (indicated by incrementing the PATCH number)
339 are intended for bug fixes and other improvements of existing
340 features only (like improving performance or adding documentation)
341 and retain API/ABI compatibility.
344 *) Add support for RFC5297 SIV mode (siv128), including AES-SIV.
347 *) Remove the 'dist' target and add a tarball building script. The
348 'dist' target has fallen out of use, and it shouldn't be
349 necessary to configure just to create a source distribution.
352 *) Recreate the OS390-Unix config target. It no longer relies on a
353 special script like it did for OpenSSL pre-1.1.0.
356 *) Instead of having the source directories listed in Configure, add
357 a 'build.info' keyword SUBDIRS to indicate what sub-directories to
361 *) Add GMAC to EVP_MAC.
364 *) Ported the HMAC, CMAC and SipHash EVP_PKEY_METHODs to EVP_MAC.
367 *) Added EVP_MAC, an EVP layer MAC API, to simplify adding MAC
368 implementations. This includes a generic EVP_PKEY to EVP_MAC bridge,
369 to facilitate the continued use of MACs through raw private keys in
370 functionality such as EVP_DigestSign* and EVP_DigestVerify*.
373 *) Deprecate ECDH_KDF_X9_62() and mark its replacement as internal. Users
374 should use the EVP interface instead (EVP_PKEY_CTX_set_ecdh_kdf_type).
377 *) Added EVP_PKEY_ECDH_KDF_X9_63 and ecdh_KDF_X9_63() as replacements for
378 the EVP_PKEY_ECDH_KDF_X9_62 KDF type and ECDH_KDF_X9_62(). The old names
379 are retained for backwards compatibility.
382 *) AES-XTS mode now enforces that its two keys are different to mitigate
383 the attacked described in "Efficient Instantiations of Tweakable
384 Blockciphers and Refinements to Modes OCB and PMAC" by Phillip Rogaway.
385 Details of this attack can be obtained from:
386 http://web.cs.ucdavis.edu/%7Erogaway/papers/offsets.pdf
389 *) Rename the object files, i.e. give them other names than in previous
390 versions. Their names now include the name of the final product, as
391 well as its type mnemonic (bin, lib, shlib).
394 *) Added new option for 'openssl list', '-objects', which will display the
395 list of built in objects, i.e. OIDs with names.
398 *) Added support for Linux Kernel TLS data-path. The Linux Kernel data-path
399 improves application performance by removing data copies and providing
400 applications with zero-copy system calls such as sendfile and splice.
403 Changes between 1.1.1a and 1.1.1b [xx XXX xxxx]
405 *) Change the info callback signals for the start and end of a post-handshake
406 message exchange in TLSv1.3. In 1.1.1/1.1.1a we used SSL_CB_HANDSHAKE_START
407 and SSL_CB_HANDSHAKE_DONE. Experience has shown that many applications get
408 confused by this and assume that a TLSv1.2 renegotiation has started. This
409 can break KeyUpdate handling. Instead we no longer signal the start and end
410 of a post handshake message exchange (although the messages themselves are
411 still signalled). This could break some applications that were expecting
412 the old signals. However without this KeyUpdate is not usable for many
416 Changes between 1.1.1 and 1.1.1a [20 Nov 2018]
418 *) Timing vulnerability in DSA signature generation
420 The OpenSSL DSA signature algorithm has been shown to be vulnerable to a
421 timing side channel attack. An attacker could use variations in the signing
422 algorithm to recover the private key.
424 This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser.
428 *) Timing vulnerability in ECDSA signature generation
430 The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a
431 timing side channel attack. An attacker could use variations in the signing
432 algorithm to recover the private key.
434 This issue was reported to OpenSSL on 25th October 2018 by Samuel Weiser.
438 *) Fixed the issue that RAND_add()/RAND_seed() silently discards random input
439 if its length exceeds 4096 bytes. The limit has been raised to a buffer size
440 of two gigabytes and the error handling improved.
442 This issue was reported to OpenSSL by Dr. Falko Strenzke. It has been
443 categorized as a normal bug, not a security issue, because the DRBG reseeds
444 automatically and is fully functional even without additional randomness
445 provided by the application.
447 Changes between 1.1.0i and 1.1.1 [11 Sep 2018]
449 *) Add a new ClientHello callback. Provides a callback interface that gives
450 the application the ability to adjust the nascent SSL object at the
451 earliest stage of ClientHello processing, immediately after extensions have
452 been collected but before they have been processed. In particular, this
453 callback can adjust the supported TLS versions in response to the contents
457 *) Add SM2 base algorithm support.
460 *) s390x assembly pack: add (improved) hardware-support for the following
461 cryptographic primitives: sha3, shake, aes-gcm, aes-ccm, aes-ctr, aes-ofb,
462 aes-cfb/cfb8, aes-ecb.
465 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
466 parameter is no longer accepted, as it leads to a corrupt table. NULL
467 pem_str is reserved for alias entries only.
470 *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
471 step for prime curves. The new implementation is based on formulae from
472 differential addition-and-doubling in homogeneous projective coordinates
473 from Izu-Takagi "A fast parallel elliptic curve multiplication resistant
474 against side channel attacks" and Brier-Joye "Weierstrass Elliptic Curves
475 and Side-Channel Attacks" Eq. (8) for y-coordinate recovery, modified
476 to work in projective coordinates.
477 [Billy Bob Brumley, Nicola Tuveri]
479 *) Change generating and checking of primes so that the error rate of not
480 being prime depends on the intended use based on the size of the input.
481 For larger primes this will result in more rounds of Miller-Rabin.
482 The maximal error rate for primes with more than 1080 bits is lowered
484 [Kurt Roeckx, Annie Yousar]
486 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64.
489 *) The 'tsget' script is renamed to 'tsget.pl', to avoid confusion when
490 moving between systems, and to avoid confusion when a Windows build is
491 done with mingw vs with MSVC. For POSIX installs, there's still a
492 symlink or copy named 'tsget' to avoid that confusion as well.
495 *) Revert blinding in ECDSA sign and instead make problematic addition
496 length-invariant. Switch even to fixed-length Montgomery multiplication.
499 *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
500 step for binary curves. The new implementation is based on formulae from
501 differential addition-and-doubling in mixed Lopez-Dahab projective
502 coordinates, modified to independently blind the operands.
503 [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri]
505 *) Add a scaffold to optionally enhance the Montgomery ladder implementation
506 for `ec_scalar_mul_ladder` (formerly `ec_mul_consttime`) allowing
507 EC_METHODs to implement their own specialized "ladder step", to take
508 advantage of more favorable coordinate systems or more efficient
509 differential addition-and-doubling algorithms.
510 [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri]
512 *) Modified the random device based seed sources to keep the relevant
513 file descriptors open rather than reopening them on each access.
514 This allows such sources to operate in a chroot() jail without
515 the associated device nodes being available. This behaviour can be
516 controlled using RAND_keep_random_devices_open().
519 *) Numerous side-channel attack mitigations have been applied. This may have
520 performance impacts for some algorithms for the benefit of improved
521 security. Specific changes are noted in this change log by their respective
525 *) AIX shared library support overhaul. Switch to AIX "natural" way of
526 handling shared libraries, which means collecting shared objects of
527 different versions and bitnesses in one common archive. This allows to
528 mitigate conflict between 1.0 and 1.1 side-by-side installations. It
529 doesn't affect the way 3rd party applications are linked, only how
530 multi-version installation is managed.
533 *) Make ec_group_do_inverse_ord() more robust and available to other
534 EC cryptosystems, so that irrespective of BN_FLG_CONSTTIME, SCA
535 mitigations are applied to the fallback BN_mod_inverse().
536 When using this function rather than BN_mod_inverse() directly, new
537 EC cryptosystem implementations are then safer-by-default.
540 *) Add coordinate blinding for EC_POINT and implement projective
541 coordinate blinding for generic prime curves as a countermeasure to
542 chosen point SCA attacks.
543 [Sohaib ul Hassan, Nicola Tuveri, Billy Bob Brumley]
545 *) Add blinding to ECDSA and DSA signatures to protect against side channel
546 attacks discovered by Keegan Ryan (NCC Group).
549 *) Enforce checking in the pkeyutl command line app to ensure that the input
550 length does not exceed the maximum supported digest length when performing
551 a sign, verify or verifyrecover operation.
554 *) SSL_MODE_AUTO_RETRY is enabled by default. Applications that use blocking
555 I/O in combination with something like select() or poll() will hang. This
556 can be turned off again using SSL_CTX_clear_mode().
557 Many applications do not properly handle non-application data records, and
558 TLS 1.3 sends more of such records. Setting SSL_MODE_AUTO_RETRY works
559 around the problems in those applications, but can also break some.
560 It's recommended to read the manpages about SSL_read(), SSL_write(),
561 SSL_get_error(), SSL_shutdown(), SSL_CTX_set_mode() and
562 SSL_CTX_set_read_ahead() again.
565 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
566 now allow empty (zero character) pass phrases.
569 *) Apply blinding to binary field modular inversion and remove patent
570 pending (OPENSSL_SUN_GF2M_DIV) BN_GF2m_mod_div implementation.
573 *) Deprecate ec2_mult.c and unify scalar multiplication code paths for
574 binary and prime elliptic curves.
577 *) Remove ECDSA nonce padding: EC_POINT_mul is now responsible for
578 constant time fixed point multiplication.
581 *) Revise elliptic curve scalar multiplication with timing attack
582 defenses: ec_wNAF_mul redirects to a constant time implementation
583 when computing fixed point and variable point multiplication (which
584 in OpenSSL are mostly used with secret scalars in keygen, sign,
585 ECDH derive operations).
586 [Billy Bob Brumley, Nicola Tuveri, Cesar Pereida García,
589 *) Updated CONTRIBUTING
592 *) Updated DRBG / RAND to request nonce and additional low entropy
593 randomness from the system.
594 [Matthias St. Pierre]
596 *) Updated 'openssl rehash' to use OpenSSL consistent default.
599 *) Moved the load of the ssl_conf module to libcrypto, which helps
600 loading engines that libssl uses before libssl is initialised.
603 *) Added EVP_PKEY_sign() and EVP_PKEY_verify() for EdDSA
606 *) Fixed X509_NAME_ENTRY_set to get multi-valued RDNs right in all cases.
607 [Ingo Schwarze, Rich Salz]
609 *) Added output of accepting IP address and port for 'openssl s_server'
612 *) Added a new API for TLSv1.3 ciphersuites:
613 SSL_CTX_set_ciphersuites()
614 SSL_set_ciphersuites()
617 *) Memory allocation failures consistently add an error to the error
621 *) Don't use OPENSSL_ENGINES and OPENSSL_CONF environment values
622 in libcrypto when run as setuid/setgid.
625 *) Load any config file by default when libssl is used.
628 *) Added new public header file <openssl/rand_drbg.h> and documentation
629 for the RAND_DRBG API. See manual page RAND_DRBG(7) for an overview.
630 [Matthias St. Pierre]
632 *) QNX support removed (cannot find contributors to get their approval
633 for the license change).
636 *) TLSv1.3 replay protection for early data has been implemented. See the
637 SSL_read_early_data() man page for further details.
640 *) Separated TLSv1.3 ciphersuite configuration out from TLSv1.2 ciphersuite
641 configuration. TLSv1.3 ciphersuites are not compatible with TLSv1.2 and
642 below. Similarly TLSv1.2 ciphersuites are not compatible with TLSv1.3.
643 In order to avoid issues where legacy TLSv1.2 ciphersuite configuration
644 would otherwise inadvertently disable all TLSv1.3 ciphersuites the
645 configuration has been separated out. See the ciphers man page or the
646 SSL_CTX_set_ciphersuites() man page for more information.
649 *) On POSIX (BSD, Linux, ...) systems the ocsp(1) command running
650 in responder mode now supports the new "-multi" option, which
651 spawns the specified number of child processes to handle OCSP
652 requests. The "-timeout" option now also limits the OCSP
653 responder's patience to wait to receive the full client request
654 on a newly accepted connection. Child processes are respawned
655 as needed, and the CA index file is automatically reloaded
656 when changed. This makes it possible to run the "ocsp" responder
657 as a long-running service, making the OpenSSL CA somewhat more
658 feature-complete. In this mode, most diagnostic messages logged
659 after entering the event loop are logged via syslog(3) rather than
663 *) Added support for X448 and Ed448. Heavily based on original work by
667 *) Extend OSSL_STORE with capabilities to search and to narrow the set of
668 objects loaded. This adds the functions OSSL_STORE_expect() and
669 OSSL_STORE_find() as well as needed tools to construct searches and
670 get the search data out of them.
673 *) Support for TLSv1.3 added. Note that users upgrading from an earlier
674 version of OpenSSL should review their configuration settings to ensure
675 that they are still appropriate for TLSv1.3. For further information see:
676 https://wiki.openssl.org/index.php/TLS1.3
679 *) Grand redesign of the OpenSSL random generator
681 The default RAND method now utilizes an AES-CTR DRBG according to
682 NIST standard SP 800-90Ar1. The new random generator is essentially
683 a port of the default random generator from the OpenSSL FIPS 2.0
684 object module. It is a hybrid deterministic random bit generator
685 using an AES-CTR bit stream and which seeds and reseeds itself
686 automatically using trusted system entropy sources.
688 Some of its new features are:
689 o Support for multiple DRBG instances with seed chaining.
690 o The default RAND method makes use of a DRBG.
691 o There is a public and private DRBG instance.
692 o The DRBG instances are fork-safe.
693 o Keep all global DRBG instances on the secure heap if it is enabled.
694 o The public and private DRBG instance are per thread for lock free
696 [Paul Dale, Benjamin Kaduk, Kurt Roeckx, Rich Salz, Matthias St. Pierre]
698 *) Changed Configure so it only says what it does and doesn't dump
699 so much data. Instead, ./configdata.pm should be used as a script
700 to display all sorts of configuration data.
703 *) Added processing of "make variables" to Configure.
706 *) Added SHA512/224 and SHA512/256 algorithm support.
709 *) The last traces of Netware support, first removed in 1.1.0, have
713 *) Get rid of Makefile.shared, and in the process, make the processing
714 of certain files (rc.obj, or the .def/.map/.opt files produced from
715 the ordinal files) more visible and hopefully easier to trace and
716 debug (or make silent).
719 *) Make it possible to have environment variable assignments as
720 arguments to config / Configure.
723 *) Add multi-prime RSA (RFC 8017) support.
726 *) Add SM3 implemented according to GB/T 32905-2016
727 [ Jack Lloyd <jack.lloyd@ribose.com>,
728 Ronald Tse <ronald.tse@ribose.com>,
729 Erick Borsboom <erick.borsboom@ribose.com> ]
731 *) Add 'Maximum Fragment Length' TLS extension negotiation and support
732 as documented in RFC6066.
733 Based on a patch from Tomasz Moń
734 [Filipe Raimundo da Silva]
736 *) Add SM4 implemented according to GB/T 32907-2016.
737 [ Jack Lloyd <jack.lloyd@ribose.com>,
738 Ronald Tse <ronald.tse@ribose.com>,
739 Erick Borsboom <erick.borsboom@ribose.com> ]
741 *) Reimplement -newreq-nodes and ERR_error_string_n; the
742 original author does not agree with the license change.
745 *) Add ARIA AEAD TLS support.
748 *) Some macro definitions to support VS6 have been removed. Visual
749 Studio 6 has not worked since 1.1.0
752 *) Add ERR_clear_last_mark(), to allow callers to clear the last mark
753 without clearing the errors.
756 *) Add "atfork" functions. If building on a system that without
757 pthreads, see doc/man3/OPENSSL_fork_prepare.pod for application
758 requirements. The RAND facility now uses/requires this.
764 *) The UI API becomes a permanent and integral part of libcrypto, i.e.
765 not possible to disable entirely. However, it's still possible to
766 disable the console reading UI method, UI_OpenSSL() (use UI_null()
769 To disable, configure with 'no-ui-console'. 'no-ui' is still
770 possible to use as an alias. Check at compile time with the
771 macro OPENSSL_NO_UI_CONSOLE. The macro OPENSSL_NO_UI is still
772 possible to check and is an alias for OPENSSL_NO_UI_CONSOLE.
775 *) Add a STORE module, which implements a uniform and URI based reader of
776 stores that can contain keys, certificates, CRLs and numerous other
777 objects. The main API is loosely based on a few stdio functions,
778 and includes OSSL_STORE_open, OSSL_STORE_load, OSSL_STORE_eof,
779 OSSL_STORE_error and OSSL_STORE_close.
780 The implementation uses backends called "loaders" to implement arbitrary
781 URI schemes. There is one built in "loader" for the 'file' scheme.
784 *) Add devcrypto engine. This has been implemented against cryptodev-linux,
785 then adjusted to work on FreeBSD 8.4 as well.
786 Enable by configuring with 'enable-devcryptoeng'. This is done by default
787 on BSD implementations, as cryptodev.h is assumed to exist on all of them.
790 *) Module names can prefixed with OSSL_ or OPENSSL_. This affects
791 util/mkerr.pl, which is adapted to allow those prefixes, leading to
792 error code calls like this:
794 OSSL_FOOerr(OSSL_FOO_F_SOMETHING, OSSL_FOO_R_WHATEVER);
796 With this change, we claim the namespaces OSSL and OPENSSL in a manner
797 that can be encoded in C. For the foreseeable future, this will only
799 [Richard Levitte and Tim Hudson]
801 *) Removed BSD cryptodev engine.
804 *) Add a build target 'build_all_generated', to build all generated files
805 and only that. This can be used to prepare everything that requires
806 things like perl for a system that lacks perl and then move everything
807 to that system and do the rest of the build there.
810 *) In the UI interface, make it possible to duplicate the user data. This
811 can be used by engines that need to retain the data for a longer time
812 than just the call where this user data is passed.
815 *) Ignore the '-named_curve auto' value for compatibility of applications
817 [Tomas Mraz <tmraz@fedoraproject.org>]
819 *) Fragmented SSL/TLS alerts are no longer accepted. An alert message is 2
820 bytes long. In theory it is permissible in SSLv3 - TLSv1.2 to fragment such
821 alerts across multiple records (some of which could be empty). In practice
822 it make no sense to send an empty alert record, or to fragment one. TLSv1.3
823 prohibts this altogether and other libraries (BoringSSL, NSS) do not
824 support this at all. Supporting it adds significant complexity to the
825 record layer, and its removal is unlikely to cause inter-operability
829 *) Add the ASN.1 types INT32, UINT32, INT64, UINT64 and variants prefixed
830 with Z. These are meant to replace LONG and ZLONG and to be size safe.
831 The use of LONG and ZLONG is discouraged and scheduled for deprecation
835 *) Add the 'z' and 'j' modifiers to BIO_printf() et al formatting string,
836 'z' is to be used for [s]size_t, and 'j' - with [u]int64_t.
837 [Richard Levitte, Andy Polyakov]
839 *) Add EC_KEY_get0_engine(), which does for EC_KEY what RSA_get0_engine()
843 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
844 platform rather than 'mingw'.
847 *) The functions X509_STORE_add_cert and X509_STORE_add_crl return
848 success if they are asked to add an object which already exists
849 in the store. This change cascades to other functions which load
850 certificates and CRLs.
853 *) x86_64 assembly pack: annotate code with DWARF CFI directives to
854 facilitate stack unwinding even from assembly subroutines.
857 *) Remove VAX C specific definitions of OPENSSL_EXPORT, OPENSSL_EXTERN.
858 Also remove OPENSSL_GLOBAL entirely, as it became a no-op.
861 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
862 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
863 which is the minimum version we support.
866 *) Certificate time validation (X509_cmp_time) enforces stricter
867 compliance with RFC 5280. Fractional seconds and timezone offsets
868 are no longer allowed.
871 *) Add support for ARIA
874 *) s_client will now send the Server Name Indication (SNI) extension by
875 default unless the new "-noservername" option is used. The server name is
876 based on the host provided to the "-connect" option unless overridden by
880 *) Add support for SipHash
883 *) OpenSSL now fails if it receives an unrecognised record type in TLS1.0
884 or TLS1.1. Previously this only happened in SSLv3 and TLS1.2. This is to
885 prevent issues where no progress is being made and the peer continually
886 sends unrecognised record types, using up resources processing them.
889 *) 'openssl passwd' can now produce SHA256 and SHA512 based output,
890 using the algorithm defined in
891 https://www.akkadia.org/drepper/SHA-crypt.txt
894 *) Heartbeat support has been removed; the ABI is changed for now.
895 [Richard Levitte, Rich Salz]
897 *) Support for SSL_OP_NO_ENCRYPT_THEN_MAC in SSL_CONF_cmd.
900 *) The RSA "null" method, which was partially supported to avoid patent
901 issues, has been replaced to always returns NULL.
905 Changes between 1.1.0h and 1.1.0i [xx XXX xxxx]
907 *) Client DoS due to large DH parameter
909 During key agreement in a TLS handshake using a DH(E) based ciphersuite a
910 malicious server can send a very large prime value to the client. This will
911 cause the client to spend an unreasonably long period of time generating a
912 key for this prime resulting in a hang until the client has finished. This
913 could be exploited in a Denial Of Service attack.
915 This issue was reported to OpenSSL on 5th June 2018 by Guido Vranken
919 *) Cache timing vulnerability in RSA Key Generation
921 The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to
922 a cache timing side channel attack. An attacker with sufficient access to
923 mount cache timing attacks during the RSA key generation process could
924 recover the private key.
926 This issue was reported to OpenSSL on 4th April 2018 by Alejandro Cabrera
927 Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia.
931 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
932 parameter is no longer accepted, as it leads to a corrupt table. NULL
933 pem_str is reserved for alias entries only.
936 *) Revert blinding in ECDSA sign and instead make problematic addition
937 length-invariant. Switch even to fixed-length Montgomery multiplication.
940 *) Change generating and checking of primes so that the error rate of not
941 being prime depends on the intended use based on the size of the input.
942 For larger primes this will result in more rounds of Miller-Rabin.
943 The maximal error rate for primes with more than 1080 bits is lowered
945 [Kurt Roeckx, Annie Yousar]
947 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64.
950 *) Add blinding to ECDSA and DSA signatures to protect against side channel
951 attacks discovered by Keegan Ryan (NCC Group).
954 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
955 now allow empty (zero character) pass phrases.
958 *) Certificate time validation (X509_cmp_time) enforces stricter
959 compliance with RFC 5280. Fractional seconds and timezone offsets
960 are no longer allowed.
963 *) Fixed a text canonicalisation bug in CMS
965 Where a CMS detached signature is used with text content the text goes
966 through a canonicalisation process first prior to signing or verifying a
967 signature. This process strips trailing space at the end of lines, converts
968 line terminators to CRLF and removes additional trailing line terminators
969 at the end of a file. A bug in the canonicalisation process meant that
970 some characters, such as form-feed, were incorrectly treated as whitespace
971 and removed. This is contrary to the specification (RFC5485). This fix
972 could mean that detached text data signed with an earlier version of
973 OpenSSL 1.1.0 may fail to verify using the fixed version, or text data
974 signed with a fixed OpenSSL may fail to verify with an earlier version of
975 OpenSSL 1.1.0. A workaround is to only verify the canonicalised text data
976 and use the "-binary" flag (for the "cms" command line application) or set
977 the SMIME_BINARY/PKCS7_BINARY/CMS_BINARY flags (if using CMS_verify()).
980 Changes between 1.1.0g and 1.1.0h [27 Mar 2018]
982 *) Constructed ASN.1 types with a recursive definition could exceed the stack
984 Constructed ASN.1 types with a recursive definition (such as can be found
985 in PKCS7) could eventually exceed the stack given malicious input with
986 excessive recursion. This could result in a Denial Of Service attack. There
987 are no such structures used within SSL/TLS that come from untrusted sources
988 so this is considered safe.
990 This issue was reported to OpenSSL on 4th January 2018 by the OSS-fuzz
995 *) Incorrect CRYPTO_memcmp on HP-UX PA-RISC
997 Because of an implementation bug the PA-RISC CRYPTO_memcmp function is
998 effectively reduced to only comparing the least significant bit of each
999 byte. This allows an attacker to forge messages that would be considered as
1000 authenticated in an amount of tries lower than that guaranteed by the
1001 security claims of the scheme. The module can only be compiled by the
1002 HP-UX assembler, so that only HP-UX PA-RISC targets are affected.
1004 This issue was reported to OpenSSL on 2nd March 2018 by Peter Waltenberg
1009 *) Add a build target 'build_all_generated', to build all generated files
1010 and only that. This can be used to prepare everything that requires
1011 things like perl for a system that lacks perl and then move everything
1012 to that system and do the rest of the build there.
1015 *) Backport SSL_OP_NO_RENGOTIATION
1017 OpenSSL 1.0.2 and below had the ability to disable renegotiation using the
1018 (undocumented) SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS flag. Due to the opacity
1019 changes this is no longer possible in 1.1.0. Therefore the new
1020 SSL_OP_NO_RENEGOTIATION option from 1.1.1-dev has been backported to
1021 1.1.0 to provide equivalent functionality.
1023 Note that if an application built against 1.1.0h headers (or above) is run
1024 using an older version of 1.1.0 (prior to 1.1.0h) then the option will be
1025 accepted but nothing will happen, i.e. renegotiation will not be prevented.
1028 *) Removed the OS390-Unix config target. It relied on a script that doesn't
1032 *) rsaz_1024_mul_avx2 overflow bug on x86_64
1034 There is an overflow bug in the AVX2 Montgomery multiplication procedure
1035 used in exponentiation with 1024-bit moduli. No EC algorithms are affected.
1036 Analysis suggests that attacks against RSA and DSA as a result of this
1037 defect would be very difficult to perform and are not believed likely.
1038 Attacks against DH1024 are considered just feasible, because most of the
1039 work necessary to deduce information about a private key may be performed
1040 offline. The amount of resources required for such an attack would be
1041 significant. However, for an attack on TLS to be meaningful, the server
1042 would have to share the DH1024 private key among multiple clients, which is
1043 no longer an option since CVE-2016-0701.
1045 This only affects processors that support the AVX2 but not ADX extensions
1046 like Intel Haswell (4th generation).
1048 This issue was reported to OpenSSL by David Benjamin (Google). The issue
1049 was originally found via the OSS-Fuzz project.
1053 Changes between 1.1.0f and 1.1.0g [2 Nov 2017]
1055 *) bn_sqrx8x_internal carry bug on x86_64
1057 There is a carry propagating bug in the x86_64 Montgomery squaring
1058 procedure. No EC algorithms are affected. Analysis suggests that attacks
1059 against RSA and DSA as a result of this defect would be very difficult to
1060 perform and are not believed likely. Attacks against DH are considered just
1061 feasible (although very difficult) because most of the work necessary to
1062 deduce information about a private key may be performed offline. The amount
1063 of resources required for such an attack would be very significant and
1064 likely only accessible to a limited number of attackers. An attacker would
1065 additionally need online access to an unpatched system using the target
1066 private key in a scenario with persistent DH parameters and a private
1067 key that is shared between multiple clients.
1069 This only affects processors that support the BMI1, BMI2 and ADX extensions
1070 like Intel Broadwell (5th generation) and later or AMD Ryzen.
1072 This issue was reported to OpenSSL by the OSS-Fuzz project.
1076 *) Malformed X.509 IPAddressFamily could cause OOB read
1078 If an X.509 certificate has a malformed IPAddressFamily extension,
1079 OpenSSL could do a one-byte buffer overread. The most likely result
1080 would be an erroneous display of the certificate in text format.
1082 This issue was reported to OpenSSL by the OSS-Fuzz project.
1086 Changes between 1.1.0e and 1.1.0f [25 May 2017]
1088 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
1089 platform rather than 'mingw'.
1092 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
1093 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
1094 which is the minimum version we support.
1097 Changes between 1.1.0d and 1.1.0e [16 Feb 2017]
1099 *) Encrypt-Then-Mac renegotiation crash
1101 During a renegotiation handshake if the Encrypt-Then-Mac extension is
1102 negotiated where it was not in the original handshake (or vice-versa) then
1103 this can cause OpenSSL to crash (dependant on ciphersuite). Both clients
1104 and servers are affected.
1106 This issue was reported to OpenSSL by Joe Orton (Red Hat).
1110 Changes between 1.1.0c and 1.1.0d [26 Jan 2017]
1112 *) Truncated packet could crash via OOB read
1114 If one side of an SSL/TLS path is running on a 32-bit host and a specific
1115 cipher is being used, then a truncated packet can cause that host to
1116 perform an out-of-bounds read, usually resulting in a crash.
1118 This issue was reported to OpenSSL by Robert Święcki of Google.
1122 *) Bad (EC)DHE parameters cause a client crash
1124 If a malicious server supplies bad parameters for a DHE or ECDHE key
1125 exchange then this can result in the client attempting to dereference a
1126 NULL pointer leading to a client crash. This could be exploited in a Denial
1129 This issue was reported to OpenSSL by Guido Vranken.
1133 *) BN_mod_exp may produce incorrect results on x86_64
1135 There is a carry propagating bug in the x86_64 Montgomery squaring
1136 procedure. No EC algorithms are affected. Analysis suggests that attacks
1137 against RSA and DSA as a result of this defect would be very difficult to
1138 perform and are not believed likely. Attacks against DH are considered just
1139 feasible (although very difficult) because most of the work necessary to
1140 deduce information about a private key may be performed offline. The amount
1141 of resources required for such an attack would be very significant and
1142 likely only accessible to a limited number of attackers. An attacker would
1143 additionally need online access to an unpatched system using the target
1144 private key in a scenario with persistent DH parameters and a private
1145 key that is shared between multiple clients. For example this can occur by
1146 default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very
1147 similar to CVE-2015-3193 but must be treated as a separate problem.
1149 This issue was reported to OpenSSL by the OSS-Fuzz project.
1153 Changes between 1.1.0b and 1.1.0c [10 Nov 2016]
1155 *) ChaCha20/Poly1305 heap-buffer-overflow
1157 TLS connections using *-CHACHA20-POLY1305 ciphersuites are susceptible to
1158 a DoS attack by corrupting larger payloads. This can result in an OpenSSL
1159 crash. This issue is not considered to be exploitable beyond a DoS.
1161 This issue was reported to OpenSSL by Robert Święcki (Google Security Team)
1165 *) CMS Null dereference
1167 Applications parsing invalid CMS structures can crash with a NULL pointer
1168 dereference. This is caused by a bug in the handling of the ASN.1 CHOICE
1169 type in OpenSSL 1.1.0 which can result in a NULL value being passed to the
1170 structure callback if an attempt is made to free certain invalid encodings.
1171 Only CHOICE structures using a callback which do not handle NULL value are
1174 This issue was reported to OpenSSL by Tyler Nighswander of ForAllSecure.
1178 *) Montgomery multiplication may produce incorrect results
1180 There is a carry propagating bug in the Broadwell-specific Montgomery
1181 multiplication procedure that handles input lengths divisible by, but
1182 longer than 256 bits. Analysis suggests that attacks against RSA, DSA
1183 and DH private keys are impossible. This is because the subroutine in
1184 question is not used in operations with the private key itself and an input
1185 of the attacker's direct choice. Otherwise the bug can manifest itself as
1186 transient authentication and key negotiation failures or reproducible
1187 erroneous outcome of public-key operations with specially crafted input.
1188 Among EC algorithms only Brainpool P-512 curves are affected and one
1189 presumably can attack ECDH key negotiation. Impact was not analyzed in
1190 detail, because pre-requisites for attack are considered unlikely. Namely
1191 multiple clients have to choose the curve in question and the server has to
1192 share the private key among them, neither of which is default behaviour.
1193 Even then only clients that chose the curve will be affected.
1195 This issue was publicly reported as transient failures and was not
1196 initially recognized as a security issue. Thanks to Richard Morgan for
1197 providing reproducible case.
1201 *) Removed automatic addition of RPATH in shared libraries and executables,
1202 as this was a remainder from OpenSSL 1.0.x and isn't needed any more.
1205 Changes between 1.1.0a and 1.1.0b [26 Sep 2016]
1207 *) Fix Use After Free for large message sizes
1209 The patch applied to address CVE-2016-6307 resulted in an issue where if a
1210 message larger than approx 16k is received then the underlying buffer to
1211 store the incoming message is reallocated and moved. Unfortunately a
1212 dangling pointer to the old location is left which results in an attempt to
1213 write to the previously freed location. This is likely to result in a
1214 crash, however it could potentially lead to execution of arbitrary code.
1216 This issue only affects OpenSSL 1.1.0a.
1218 This issue was reported to OpenSSL by Robert Święcki.
1222 Changes between 1.1.0 and 1.1.0a [22 Sep 2016]
1224 *) OCSP Status Request extension unbounded memory growth
1226 A malicious client can send an excessively large OCSP Status Request
1227 extension. If that client continually requests renegotiation, sending a
1228 large OCSP Status Request extension each time, then there will be unbounded
1229 memory growth on the server. This will eventually lead to a Denial Of
1230 Service attack through memory exhaustion. Servers with a default
1231 configuration are vulnerable even if they do not support OCSP. Builds using
1232 the "no-ocsp" build time option are not affected.
1234 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
1238 *) SSL_peek() hang on empty record
1240 OpenSSL 1.1.0 SSL/TLS will hang during a call to SSL_peek() if the peer
1241 sends an empty record. This could be exploited by a malicious peer in a
1242 Denial Of Service attack.
1244 This issue was reported to OpenSSL by Alex Gaynor.
1248 *) Excessive allocation of memory in tls_get_message_header() and
1249 dtls1_preprocess_fragment()
1251 A (D)TLS message includes 3 bytes for its length in the header for the
1252 message. This would allow for messages up to 16Mb in length. Messages of
1253 this length are excessive and OpenSSL includes a check to ensure that a
1254 peer is sending reasonably sized messages in order to avoid too much memory
1255 being consumed to service a connection. A flaw in the logic of version
1256 1.1.0 means that memory for the message is allocated too early, prior to
1257 the excessive message length check. Due to way memory is allocated in
1258 OpenSSL this could mean an attacker could force up to 21Mb to be allocated
1259 to service a connection. This could lead to a Denial of Service through
1260 memory exhaustion. However, the excessive message length check still takes
1261 place, and this would cause the connection to immediately fail. Assuming
1262 that the application calls SSL_free() on the failed connection in a timely
1263 manner then the 21Mb of allocated memory will then be immediately freed
1264 again. Therefore the excessive memory allocation will be transitory in
1265 nature. This then means that there is only a security impact if:
1267 1) The application does not call SSL_free() in a timely manner in the event
1268 that the connection fails
1270 2) The application is working in a constrained environment where there is
1271 very little free memory
1273 3) The attacker initiates multiple connection attempts such that there are
1274 multiple connections in a state where memory has been allocated for the
1275 connection; SSL_free() has not yet been called; and there is insufficient
1276 memory to service the multiple requests.
1278 Except in the instance of (1) above any Denial Of Service is likely to be
1279 transitory because as soon as the connection fails the memory is
1280 subsequently freed again in the SSL_free() call. However there is an
1281 increased risk during this period of application crashes due to the lack of
1282 memory - which would then mean a more serious Denial of Service.
1284 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
1285 (CVE-2016-6307 and CVE-2016-6308)
1288 *) solaris-x86-cc, i.e. 32-bit configuration with vendor compiler,
1289 had to be removed. Primary reason is that vendor assembler can't
1290 assemble our modules with -KPIC flag. As result it, assembly
1291 support, was not even available as option. But its lack means
1292 lack of side-channel resistant code, which is incompatible with
1293 security by todays standards. Fortunately gcc is readily available
1294 prepackaged option, which we firmly point at...
1297 Changes between 1.0.2h and 1.1.0 [25 Aug 2016]
1299 *) Windows command-line tool supports UTF-8 opt-in option for arguments
1300 and console input. Setting OPENSSL_WIN32_UTF8 environment variable
1301 (to any value) allows Windows user to access PKCS#12 file generated
1302 with Windows CryptoAPI and protected with non-ASCII password, as well
1303 as files generated under UTF-8 locale on Linux also protected with
1307 *) To mitigate the SWEET32 attack (CVE-2016-2183), 3DES cipher suites
1308 have been disabled by default and removed from DEFAULT, just like RC4.
1309 See the RC4 item below to re-enable both.
1312 *) The method for finding the storage location for the Windows RAND seed file
1313 has changed. First we check %RANDFILE%. If that is not set then we check
1314 the directories %HOME%, %USERPROFILE% and %SYSTEMROOT% in that order. If
1315 all else fails we fall back to C:\.
1318 *) The EVP_EncryptUpdate() function has had its return type changed from void
1319 to int. A return of 0 indicates and error while a return of 1 indicates
1323 *) The flags RSA_FLAG_NO_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME and
1324 DH_FLAG_NO_EXP_CONSTTIME which previously provided the ability to switch
1325 off the constant time implementation for RSA, DSA and DH have been made
1326 no-ops and deprecated.
1329 *) Windows RAND implementation was simplified to only get entropy by
1330 calling CryptGenRandom(). Various other RAND-related tickets
1332 [Joseph Wylie Yandle, Rich Salz]
1334 *) The stack and lhash API's were renamed to start with OPENSSL_SK_
1335 and OPENSSL_LH_, respectively. The old names are available
1336 with API compatibility. They new names are now completely documented.
1339 *) Unify TYPE_up_ref(obj) methods signature.
1340 SSL_CTX_up_ref(), SSL_up_ref(), X509_up_ref(), EVP_PKEY_up_ref(),
1341 X509_CRL_up_ref(), X509_OBJECT_up_ref_count() methods are now returning an
1342 int (instead of void) like all others TYPE_up_ref() methods.
1343 So now these methods also check the return value of CRYPTO_atomic_add(),
1344 and the validity of object reference counter.
1345 [fdasilvayy@gmail.com]
1347 *) With Windows Visual Studio builds, the .pdb files are installed
1348 alongside the installed libraries and executables. For a static
1349 library installation, ossl_static.pdb is the associate compiler
1350 generated .pdb file to be used when linking programs.
1353 *) Remove openssl.spec. Packaging files belong with the packagers.
1356 *) Automatic Darwin/OSX configuration has had a refresh, it will now
1357 recognise x86_64 architectures automatically. You can still decide
1358 to build for a different bitness with the environment variable
1359 KERNEL_BITS (can be 32 or 64), for example:
1361 KERNEL_BITS=32 ./config
1365 *) Change default algorithms in pkcs8 utility to use PKCS#5 v2.0,
1366 256 bit AES and HMAC with SHA256.
1369 *) Remove support for MIPS o32 ABI on IRIX (and IRIX only).
1372 *) Triple-DES ciphers have been moved from HIGH to MEDIUM.
1375 *) To enable users to have their own config files and build file templates,
1376 Configure looks in the directory indicated by the environment variable
1377 OPENSSL_LOCAL_CONFIG_DIR as well as the in-source Configurations/
1378 directory. On VMS, OPENSSL_LOCAL_CONFIG_DIR is expected to be a logical
1379 name and is used as is.
1382 *) The following datatypes were made opaque: X509_OBJECT, X509_STORE_CTX,
1383 X509_STORE, X509_LOOKUP, and X509_LOOKUP_METHOD. The unused type
1384 X509_CERT_FILE_CTX was removed.
1387 *) "shared" builds are now the default. To create only static libraries use
1388 the "no-shared" Configure option.
1391 *) Remove the no-aes, no-hmac, no-rsa, no-sha and no-md5 Configure options.
1392 All of these option have not worked for some while and are fundamental
1396 *) Make various cleanup routines no-ops and mark them as deprecated. Most
1397 global cleanup functions are no longer required because they are handled
1398 via auto-deinit (see OPENSSL_init_crypto and OPENSSL_init_ssl man pages).
1399 Explicitly de-initing can cause problems (e.g. where a library that uses
1400 OpenSSL de-inits, but an application is still using it). The affected
1401 functions are CONF_modules_free(), ENGINE_cleanup(), OBJ_cleanup(),
1402 EVP_cleanup(), BIO_sock_cleanup(), CRYPTO_cleanup_all_ex_data(),
1403 RAND_cleanup(), SSL_COMP_free_compression_methods(), ERR_free_strings() and
1404 COMP_zlib_cleanup().
1407 *) --strict-warnings no longer enables runtime debugging options
1408 such as REF_DEBUG. Instead, debug options are automatically
1409 enabled with '--debug' builds.
1410 [Andy Polyakov, Emilia Käsper]
1412 *) Made DH and DH_METHOD opaque. The structures for managing DH objects
1413 have been moved out of the public header files. New functions for managing
1414 these have been added.
1417 *) Made RSA and RSA_METHOD opaque. The structures for managing RSA
1418 objects have been moved out of the public header files. New
1419 functions for managing these have been added.
1422 *) Made DSA and DSA_METHOD opaque. The structures for managing DSA objects
1423 have been moved out of the public header files. New functions for managing
1424 these have been added.
1427 *) Made BIO and BIO_METHOD opaque. The structures for managing BIOs have been
1428 moved out of the public header files. New functions for managing these
1432 *) Removed no-rijndael as a config option. Rijndael is an old name for AES.
1435 *) Removed the mk1mf build scripts.
1438 *) Headers are now wrapped, if necessary, with OPENSSL_NO_xxx, so
1439 it is always safe to #include a header now.
1442 *) Removed the aged BC-32 config and all its supporting scripts
1445 *) Removed support for Ultrix, Netware, and OS/2.
1448 *) Add support for HKDF.
1449 [Alessandro Ghedini]
1451 *) Add support for blake2b and blake2s
1454 *) Added support for "pipelining". Ciphers that have the
1455 EVP_CIPH_FLAG_PIPELINE flag set have a capability to process multiple
1456 encryptions/decryptions simultaneously. There are currently no built-in
1457 ciphers with this property but the expectation is that engines will be able
1458 to offer it to significantly improve throughput. Support has been extended
1459 into libssl so that multiple records for a single connection can be
1460 processed in one go (for >=TLS 1.1).
1463 *) Added the AFALG engine. This is an async capable engine which is able to
1464 offload work to the Linux kernel. In this initial version it only supports
1465 AES128-CBC. The kernel must be version 4.1.0 or greater.
1468 *) OpenSSL now uses a new threading API. It is no longer necessary to
1469 set locking callbacks to use OpenSSL in a multi-threaded environment. There
1470 are two supported threading models: pthreads and windows threads. It is
1471 also possible to configure OpenSSL at compile time for "no-threads". The
1472 old threading API should no longer be used. The functions have been
1473 replaced with "no-op" compatibility macros.
1474 [Alessandro Ghedini, Matt Caswell]
1476 *) Modify behavior of ALPN to invoke callback after SNI/servername
1477 callback, such that updates to the SSL_CTX affect ALPN.
1480 *) Add SSL_CIPHER queries for authentication and key-exchange.
1483 *) Changes to the DEFAULT cipherlist:
1484 - Prefer (EC)DHE handshakes over plain RSA.
1485 - Prefer AEAD ciphers over legacy ciphers.
1486 - Prefer ECDSA over RSA when both certificates are available.
1487 - Prefer TLSv1.2 ciphers/PRF.
1488 - Remove DSS, SEED, IDEA, CAMELLIA, and AES-CCM from the
1492 *) Change the ECC default curve list to be this, in order: x25519,
1493 secp256r1, secp521r1, secp384r1.
1496 *) RC4 based libssl ciphersuites are now classed as "weak" ciphers and are
1497 disabled by default. They can be re-enabled using the
1498 enable-weak-ssl-ciphers option to Configure.
1501 *) If the server has ALPN configured, but supports no protocols that the
1502 client advertises, send a fatal "no_application_protocol" alert.
1503 This behaviour is SHALL in RFC 7301, though it isn't universally
1504 implemented by other servers.
1507 *) Add X25519 support.
1508 Add ASN.1 and EVP_PKEY methods for X25519. This includes support
1509 for public and private key encoding using the format documented in
1510 draft-ietf-curdle-pkix-02. The corresponding EVP_PKEY method supports
1511 key generation and key derivation.
1513 TLS support complies with draft-ietf-tls-rfc4492bis-08 and uses
1517 *) Deprecate SRP_VBASE_get_by_user.
1518 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
1519 In order to fix an unavoidable memory leak (CVE-2016-0798),
1520 SRP_VBASE_get_by_user was changed to ignore the "fake user" SRP
1521 seed, even if the seed is configured.
1523 Users should use SRP_VBASE_get1_by_user instead. Note that in
1524 SRP_VBASE_get1_by_user, caller must free the returned value. Note
1525 also that even though configuring the SRP seed attempts to hide
1526 invalid usernames by continuing the handshake with fake
1527 credentials, this behaviour is not constant time and no strong
1528 guarantees are made that the handshake is indistinguishable from
1529 that of a valid user.
1532 *) Configuration change; it's now possible to build dynamic engines
1533 without having to build shared libraries and vice versa. This
1534 only applies to the engines in engines/, those in crypto/engine/
1535 will always be built into libcrypto (i.e. "static").
1537 Building dynamic engines is enabled by default; to disable, use
1538 the configuration option "disable-dynamic-engine".
1540 The only requirements for building dynamic engines are the
1541 presence of the DSO module and building with position independent
1542 code, so they will also automatically be disabled if configuring
1543 with "disable-dso" or "disable-pic".
1545 The macros OPENSSL_NO_STATIC_ENGINE and OPENSSL_NO_DYNAMIC_ENGINE
1546 are also taken away from openssl/opensslconf.h, as they are
1550 *) Configuration change; if there is a known flag to compile
1551 position independent code, it will always be applied on the
1552 libcrypto and libssl object files, and never on the application
1553 object files. This means other libraries that use routines from
1554 libcrypto / libssl can be made into shared libraries regardless
1555 of how OpenSSL was configured.
1557 If this isn't desirable, the configuration options "disable-pic"
1558 or "no-pic" can be used to disable the use of PIC. This will
1559 also disable building shared libraries and dynamic engines.
1562 *) Removed JPAKE code. It was experimental and has no wide use.
1565 *) The INSTALL_PREFIX Makefile variable has been renamed to
1566 DESTDIR. That makes for less confusion on what this variable
1567 is for. Also, the configuration option --install_prefix is
1571 *) Heartbeat for TLS has been removed and is disabled by default
1572 for DTLS; configure with enable-heartbeats. Code that uses the
1573 old #define's might need to be updated.
1574 [Emilia Käsper, Rich Salz]
1576 *) Rename REF_CHECK to REF_DEBUG.
1579 *) New "unified" build system
1581 The "unified" build system is aimed to be a common system for all
1582 platforms we support. With it comes new support for VMS.
1584 This system builds supports building in a different directory tree
1585 than the source tree. It produces one Makefile (for unix family
1586 or lookalikes), or one descrip.mms (for VMS).
1588 The source of information to make the Makefile / descrip.mms is
1589 small files called 'build.info', holding the necessary
1590 information for each directory with source to compile, and a
1591 template in Configurations, like unix-Makefile.tmpl or
1594 With this change, the library names were also renamed on Windows
1595 and on VMS. They now have names that are closer to the standard
1596 on Unix, and include the major version number, and in certain
1597 cases, the architecture they are built for. See "Notes on shared
1598 libraries" in INSTALL.
1600 We rely heavily on the perl module Text::Template.
1603 *) Added support for auto-initialisation and de-initialisation of the library.
1604 OpenSSL no longer requires explicit init or deinit routines to be called,
1605 except in certain circumstances. See the OPENSSL_init_crypto() and
1606 OPENSSL_init_ssl() man pages for further information.
1609 *) The arguments to the DTLSv1_listen function have changed. Specifically the
1610 "peer" argument is now expected to be a BIO_ADDR object.
1612 *) Rewrite of BIO networking library. The BIO library lacked consistent
1613 support of IPv6, and adding it required some more extensive
1614 modifications. This introduces the BIO_ADDR and BIO_ADDRINFO types,
1615 which hold all types of addresses and chains of address information.
1616 It also introduces a new API, with functions like BIO_socket,
1617 BIO_connect, BIO_listen, BIO_lookup and a rewrite of BIO_accept.
1618 The source/sink BIOs BIO_s_connect, BIO_s_accept and BIO_s_datagram
1619 have been adapted accordingly.
1622 *) RSA_padding_check_PKCS1_type_1 now accepts inputs with and without
1626 *) CRIME protection: disable compression by default, even if OpenSSL is
1627 compiled with zlib enabled. Applications can still enable compression
1628 by calling SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION), or by
1629 using the SSL_CONF library to configure compression.
1632 *) The signature of the session callback configured with
1633 SSL_CTX_sess_set_get_cb was changed. The read-only input buffer
1634 was explicitly marked as 'const unsigned char*' instead of
1638 *) Always DPURIFY. Remove the use of uninitialized memory in the
1639 RNG, and other conditional uses of DPURIFY. This makes -DPURIFY a no-op.
1642 *) Removed many obsolete configuration items, including
1643 DES_PTR, DES_RISC1, DES_RISC2, DES_INT
1644 MD2_CHAR, MD2_INT, MD2_LONG
1646 IDEA_SHORT, IDEA_LONG
1647 RC2_SHORT, RC2_LONG, RC4_LONG, RC4_CHUNK, RC4_INDEX
1648 [Rich Salz, with advice from Andy Polyakov]
1650 *) Many BN internals have been moved to an internal header file.
1651 [Rich Salz with help from Andy Polyakov]
1653 *) Configuration and writing out the results from it has changed.
1654 Files such as Makefile include/openssl/opensslconf.h and are now
1655 produced through general templates, such as Makefile.in and
1656 crypto/opensslconf.h.in and some help from the perl module
1659 Also, the center of configuration information is no longer
1660 Makefile. Instead, Configure produces a perl module in
1661 configdata.pm which holds most of the config data (in the hash
1662 table %config), the target data that comes from the target
1663 configuration in one of the Configurations/*.conf files (in
1667 *) To clarify their intended purposes, the Configure options
1668 --prefix and --openssldir change their semantics, and become more
1669 straightforward and less interdependent.
1671 --prefix shall be used exclusively to give the location INSTALLTOP
1672 where programs, scripts, libraries, include files and manuals are
1673 going to be installed. The default is now /usr/local.
1675 --openssldir shall be used exclusively to give the default
1676 location OPENSSLDIR where certificates, private keys, CRLs are
1677 managed. This is also where the default openssl.cnf gets
1679 If the directory given with this option is a relative path, the
1680 values of both the --prefix value and the --openssldir value will
1681 be combined to become OPENSSLDIR.
1682 The default for --openssldir is INSTALLTOP/ssl.
1684 Anyone who uses --openssldir to specify where OpenSSL is to be
1685 installed MUST change to use --prefix instead.
1688 *) The GOST engine was out of date and therefore it has been removed. An up
1689 to date GOST engine is now being maintained in an external repository.
1690 See: https://wiki.openssl.org/index.php/Binaries. Libssl still retains
1691 support for GOST ciphersuites (these are only activated if a GOST engine
1695 *) EGD is no longer supported by default; use enable-egd when
1697 [Ben Kaduk and Rich Salz]
1699 *) The distribution now has Makefile.in files, which are used to
1700 create Makefile's when Configure is run. *Configure must be run
1701 before trying to build now.*
1704 *) The return value for SSL_CIPHER_description() for error conditions
1708 *) Support for RFC6698/RFC7671 DANE TLSA peer authentication.
1710 Obtaining and performing DNSSEC validation of TLSA records is
1711 the application's responsibility. The application provides
1712 the TLSA records of its choice to OpenSSL, and these are then
1713 used to authenticate the peer.
1715 The TLSA records need not even come from DNS. They can, for
1716 example, be used to implement local end-entity certificate or
1717 trust-anchor "pinning", where the "pin" data takes the form
1718 of TLSA records, which can augment or replace verification
1719 based on the usual WebPKI public certification authorities.
1722 *) Revert default OPENSSL_NO_DEPRECATED setting. Instead OpenSSL
1723 continues to support deprecated interfaces in default builds.
1724 However, applications are strongly advised to compile their
1725 source files with -DOPENSSL_API_COMPAT=0x10100000L, which hides
1726 the declarations of all interfaces deprecated in 0.9.8, 1.0.0
1727 or the 1.1.0 releases.
1729 In environments in which all applications have been ported to
1730 not use any deprecated interfaces OpenSSL's Configure script
1731 should be used with the --api=1.1.0 option to entirely remove
1732 support for the deprecated features from the library and
1733 unconditionally disable them in the installed headers.
1734 Essentially the same effect can be achieved with the "no-deprecated"
1735 argument to Configure, except that this will always restrict
1736 the build to just the latest API, rather than a fixed API
1739 As applications are ported to future revisions of the API,
1740 they should update their compile-time OPENSSL_API_COMPAT define
1741 accordingly, but in most cases should be able to continue to
1742 compile with later releases.
1744 The OPENSSL_API_COMPAT versions for 1.0.0, and 0.9.8 are
1745 0x10000000L and 0x00908000L, respectively. However those
1746 versions did not support the OPENSSL_API_COMPAT feature, and
1747 so applications are not typically tested for explicit support
1748 of just the undeprecated features of either release.
1751 *) Add support for setting the minimum and maximum supported protocol.
1752 It can bet set via the SSL_set_min_proto_version() and
1753 SSL_set_max_proto_version(), or via the SSL_CONF's MinProtocol and
1754 MaxProtocol. It's recommended to use the new APIs to disable
1755 protocols instead of disabling individual protocols using
1756 SSL_set_options() or SSL_CONF's Protocol. This change also
1757 removes support for disabling TLS 1.2 in the OpenSSL TLS
1758 client at compile time by defining OPENSSL_NO_TLS1_2_CLIENT.
1761 *) Support for ChaCha20 and Poly1305 added to libcrypto and libssl.
1764 *) New EC_KEY_METHOD, this replaces the older ECDSA_METHOD and ECDH_METHOD
1765 and integrates ECDSA and ECDH functionality into EC. Implementations can
1766 now redirect key generation and no longer need to convert to or from
1769 Note: the ecdsa.h and ecdh.h headers are now no longer needed and just
1770 include the ec.h header file instead.
1773 *) Remove support for all 40 and 56 bit ciphers. This includes all the export
1774 ciphers who are no longer supported and drops support the ephemeral RSA key
1775 exchange. The LOW ciphers currently doesn't have any ciphers in it.
1778 *) Made EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX, EVP_CIPHER and HMAC_CTX
1779 opaque. For HMAC_CTX, the following constructors and destructors
1782 HMAC_CTX *HMAC_CTX_new(void);
1783 void HMAC_CTX_free(HMAC_CTX *ctx);
1785 For EVP_MD and EVP_CIPHER, complete APIs to create, fill and
1786 destroy such methods has been added. See EVP_MD_meth_new(3) and
1787 EVP_CIPHER_meth_new(3) for documentation.
1790 1) EVP_MD_CTX_cleanup(), EVP_CIPHER_CTX_cleanup() and
1791 HMAC_CTX_cleanup() were removed. HMAC_CTX_reset() and
1792 EVP_MD_CTX_reset() should be called instead to reinitialise
1793 an already created structure.
1794 2) For consistency with the majority of our object creators and
1795 destructors, EVP_MD_CTX_(create|destroy) were renamed to
1796 EVP_MD_CTX_(new|free). The old names are retained as macros
1797 for deprecated builds.
1800 *) Added ASYNC support. Libcrypto now includes the async sub-library to enable
1801 cryptographic operations to be performed asynchronously as long as an
1802 asynchronous capable engine is used. See the ASYNC_start_job() man page for
1803 further details. Libssl has also had this capability integrated with the
1804 introduction of the new mode SSL_MODE_ASYNC and associated error
1805 SSL_ERROR_WANT_ASYNC. See the SSL_CTX_set_mode() and SSL_get_error() man
1806 pages. This work was developed in partnership with Intel Corp.
1809 *) SSL_{CTX_}set_ecdh_auto() has been removed and ECDH is support is
1810 always enabled now. If you want to disable the support you should
1811 exclude it using the list of supported ciphers. This also means that the
1812 "-no_ecdhe" option has been removed from s_server.
1815 *) SSL_{CTX}_set_tmp_ecdh() which can set 1 EC curve now internally calls
1816 SSL_{CTX_}set1_curves() which can set a list.
1819 *) Remove support for SSL_{CTX_}set_tmp_ecdh_callback(). You should set the
1820 curve you want to support using SSL_{CTX_}set1_curves().
1823 *) State machine rewrite. The state machine code has been significantly
1824 refactored in order to remove much duplication of code and solve issues
1825 with the old code (see ssl/statem/README for further details). This change
1826 does have some associated API changes. Notably the SSL_state() function
1827 has been removed and replaced by SSL_get_state which now returns an
1828 "OSSL_HANDSHAKE_STATE" instead of an int. SSL_set_state() has been removed
1829 altogether. The previous handshake states defined in ssl.h and ssl3.h have
1833 *) All instances of the string "ssleay" in the public API were replaced
1834 with OpenSSL (case-matching; e.g., OPENSSL_VERSION for #define's)
1835 Some error codes related to internal RSA_eay API's were renamed.
1838 *) The demo files in crypto/threads were moved to demo/threads.
1841 *) Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron, gmp,
1843 [Matt Caswell, Rich Salz]
1845 *) New ASN.1 embed macro.
1847 New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the
1848 structure is not allocated: it is part of the parent. That is instead of
1856 This reduces memory fragmentation and make it impossible to accidentally
1857 set a mandatory field to NULL.
1859 This currently only works for some fields specifically a SEQUENCE, CHOICE,
1860 or ASN1_STRING type which is part of a parent SEQUENCE. Since it is
1861 equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or
1865 *) Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled.
1868 *) Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although
1869 in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also
1870 an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add
1871 DES and RC4 ciphersuites.
1874 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
1875 This changes the decoding behaviour for some invalid messages,
1876 though the change is mostly in the more lenient direction, and
1877 legacy behaviour is preserved as much as possible.
1880 *) Fix no-stdio build.
1881 [ David Woodhouse <David.Woodhouse@intel.com> and also
1882 Ivan Nestlerode <ivan.nestlerode@sonos.com> ]
1884 *) New testing framework
1885 The testing framework has been largely rewritten and is now using
1886 perl and the perl modules Test::Harness and an extended variant of
1887 Test::More called OpenSSL::Test to do its work. All test scripts in
1888 test/ have been rewritten into test recipes, and all direct calls to
1889 executables in test/Makefile have become individual recipes using the
1890 simplified testing OpenSSL::Test::Simple.
1892 For documentation on our testing modules, do:
1894 perldoc test/testlib/OpenSSL/Test/Simple.pm
1895 perldoc test/testlib/OpenSSL/Test.pm
1899 *) Revamped memory debug; only -DCRYPTO_MDEBUG and -DCRYPTO_MDEBUG_ABORT
1900 are used; the latter aborts on memory leaks (usually checked on exit).
1901 Some undocumented "set malloc, etc., hooks" functions were removed
1902 and others were changed. All are now documented.
1905 *) In DSA_generate_parameters_ex, if the provided seed is too short,
1907 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
1909 *) Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
1910 from RFC4279, RFC4785, RFC5487, RFC5489.
1912 Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the
1913 original RSA_PSK patch.
1916 *) Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay
1917 era flag was never set throughout the codebase (only read). Also removed
1918 SSL3_FLAGS_POP_BUFFER which was only used if
1919 SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set.
1922 *) Changed the default name options in the "ca", "crl", "req" and "x509"
1923 to be "oneline" instead of "compat".
1926 *) Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're
1927 not aware of clients that still exhibit this bug, and the workaround
1928 hasn't been working properly for a while.
1931 *) The return type of BIO_number_read() and BIO_number_written() as well as
1932 the corresponding num_read and num_write members in the BIO structure has
1933 changed from unsigned long to uint64_t. On platforms where an unsigned
1934 long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is
1938 *) Given the pervasive nature of TLS extensions it is inadvisable to run
1939 OpenSSL without support for them. It also means that maintaining
1940 the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
1941 not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
1944 *) Removed support for the two export grade static DH ciphersuites
1945 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
1946 were newly added (along with a number of other static DH ciphersuites) to
1947 1.0.2. However the two export ones have *never* worked since they were
1948 introduced. It seems strange in any case to be adding new export
1949 ciphersuites, and given "logjam" it also does not seem correct to fix them.
1952 *) Version negotiation has been rewritten. In particular SSLv23_method(),
1953 SSLv23_client_method() and SSLv23_server_method() have been deprecated,
1954 and turned into macros which simply call the new preferred function names
1955 TLS_method(), TLS_client_method() and TLS_server_method(). All new code
1956 should use the new names instead. Also as part of this change the ssl23.h
1957 header file has been removed.
1960 *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
1961 code and the associated standard is no longer considered fit-for-purpose.
1964 *) RT2547 was closed. When generating a private key, try to make the
1965 output file readable only by the owner. This behavior change might
1966 be noticeable when interacting with other software.
1968 *) Documented all exdata functions. Added CRYPTO_free_ex_index.
1972 *) Added HTTP GET support to the ocsp command.
1975 *) Changed default digest for the dgst and enc commands from MD5 to
1979 *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
1982 *) Added support for TLS extended master secret from
1983 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
1984 initial patch which was a great help during development.
1987 *) All libssl internal structures have been removed from the public header
1988 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
1989 now redundant). Users should not attempt to access internal structures
1990 directly. Instead they should use the provided API functions.
1993 *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
1994 Access to deprecated functions can be re-enabled by running config with
1995 "enable-deprecated". In addition applications wishing to use deprecated
1996 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
1997 will, by default, disable some transitive includes that previously existed
1998 in the header files (e.g. ec.h will no longer, by default, include bn.h)
2001 *) Added support for OCB mode. OpenSSL has been granted a patent license
2002 compatible with the OpenSSL license for use of OCB. Details are available
2003 at https://www.openssl.org/source/OCB-patent-grant-OpenSSL.pdf. Support
2004 for OCB can be removed by calling config with no-ocb.
2007 *) SSLv2 support has been removed. It still supports receiving a SSLv2
2008 compatible client hello.
2011 *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
2012 done while fixing the error code for the key-too-small case.
2013 [Annie Yousar <a.yousar@informatik.hu-berlin.de>]
2015 *) CA.sh has been removed; use CA.pl instead.
2018 *) Removed old DES API.
2021 *) Remove various unsupported platforms:
2027 Sinix/ReliantUNIX RM400
2032 16-bit platforms such as WIN16
2035 *) Clean up OPENSSL_NO_xxx #define's
2036 Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
2037 Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
2038 OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
2039 OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
2040 OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
2041 Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
2042 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
2043 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
2044 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
2045 Remove MS_STATIC; it's a relic from platforms <32 bits.
2048 *) Cleaned up dead code
2049 Remove all but one '#ifdef undef' which is to be looked at.
2052 *) Clean up calling of xxx_free routines.
2053 Just like free(), fix most of the xxx_free routines to accept
2054 NULL. Remove the non-null checks from callers. Save much code.
2057 *) Add secure heap for storage of private keys (when possible).
2058 Add BIO_s_secmem(), CBIGNUM, etc.
2059 Contributed by Akamai Technologies under our Corporate CLA.
2062 *) Experimental support for a new, fast, unbiased prime candidate generator,
2063 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
2064 [Felix Laurie von Massenbach <felix@erbridge.co.uk>]
2066 *) New output format NSS in the sess_id command line tool. This allows
2067 exporting the session id and the master key in NSS keylog format.
2068 [Martin Kaiser <martin@kaiser.cx>]
2070 *) Harmonize version and its documentation. -f flag is used to display
2072 [mancha <mancha1@zoho.com>]
2074 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
2075 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
2076 [mancha <mancha1@zoho.com>]
2078 *) Fix some double frees. These are not thought to be exploitable.
2079 [mancha <mancha1@zoho.com>]
2081 *) A missing bounds check in the handling of the TLS heartbeat extension
2082 can be used to reveal up to 64k of memory to a connected client or
2085 Thanks for Neel Mehta of Google Security for discovering this bug and to
2086 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
2087 preparing the fix (CVE-2014-0160)
2088 [Adam Langley, Bodo Moeller]
2090 *) Fix for the attack described in the paper "Recovering OpenSSL
2091 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
2092 by Yuval Yarom and Naomi Benger. Details can be obtained from:
2093 http://eprint.iacr.org/2014/140
2095 Thanks to Yuval Yarom and Naomi Benger for discovering this
2096 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
2097 [Yuval Yarom and Naomi Benger]
2099 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
2100 this fixes a limitation in previous versions of OpenSSL.
2103 *) Experimental encrypt-then-mac support.
2105 Experimental support for encrypt then mac from
2106 draft-gutmann-tls-encrypt-then-mac-02.txt
2108 To enable it set the appropriate extension number (0x42 for the test
2109 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
2111 For non-compliant peers (i.e. just about everything) this should have no
2114 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
2118 *) Add EVP support for key wrapping algorithms, to avoid problems with
2119 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
2120 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
2121 algorithms and include tests cases.
2124 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
2128 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
2129 MGF1 digest and OAEP label.
2132 *) Make openssl verify return errors.
2133 [Chris Palmer <palmer@google.com> and Ben Laurie]
2135 *) New function ASN1_TIME_diff to calculate the difference between two
2136 ASN1_TIME structures or one structure and the current time.
2139 *) Update fips_test_suite to support multiple command line options. New
2140 test to induce all self test errors in sequence and check expected
2144 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
2145 sign or verify all in one operation.
2148 *) Add fips_algvs: a multicall fips utility incorporating all the algorithm
2149 test programs and fips_test_suite. Includes functionality to parse
2150 the minimal script output of fipsalgest.pl directly.
2153 *) Add authorisation parameter to FIPS_module_mode_set().
2156 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
2159 *) Use separate DRBG fields for internal and external flags. New function
2160 FIPS_drbg_health_check() to perform on demand health checking. Add
2161 generation tests to fips_test_suite with reduced health check interval to
2162 demonstrate periodic health checking. Add "nodh" option to
2163 fips_test_suite to skip very slow DH test.
2166 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
2170 *) More extensive health check for DRBG checking many more failure modes.
2171 New function FIPS_selftest_drbg_all() to handle every possible DRBG
2172 combination: call this in fips_test_suite.
2175 *) Add support for canonical generation of DSA parameter 'g'. See
2178 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
2179 POST to handle HMAC cases.
2182 *) Add functions FIPS_module_version() and FIPS_module_version_text()
2183 to return numerical and string versions of the FIPS module number.
2186 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
2187 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
2188 outside the validated module in the FIPS capable OpenSSL.
2191 *) Minor change to DRBG entropy callback semantics. In some cases
2192 there is no multiple of the block length between min_len and
2193 max_len. Allow the callback to return more than max_len bytes
2194 of entropy but discard any extra: it is the callback's responsibility
2195 to ensure that the extra data discarded does not impact the
2196 requested amount of entropy.
2199 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
2200 information in FIPS186-3, SP800-57 and SP800-131A.
2203 *) CCM support via EVP. Interface is very similar to GCM case except we
2204 must supply all data in one chunk (i.e. no update, final) and the
2205 message length must be supplied if AAD is used. Add algorithm test
2209 *) Initial version of POST overhaul. Add POST callback to allow the status
2210 of POST to be monitored and/or failures induced. Modify fips_test_suite
2211 to use callback. Always run all selftests even if one fails.
2214 *) XTS support including algorithm test driver in the fips_gcmtest program.
2215 Note: this does increase the maximum key length from 32 to 64 bytes but
2216 there should be no binary compatibility issues as existing applications
2217 will never use XTS mode.
2220 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
2221 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
2222 performs algorithm blocking for unapproved PRNG types. Also do not
2223 set PRNG type in FIPS_mode_set(): leave this to the application.
2224 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
2225 the standard OpenSSL PRNG: set additional data to a date time vector.
2228 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
2229 This shouldn't present any incompatibility problems because applications
2230 shouldn't be using these directly and any that are will need to rethink
2231 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
2234 *) Extensive self tests and health checking required by SP800-90 DRBG.
2235 Remove strength parameter from FIPS_drbg_instantiate and always
2236 instantiate at maximum supported strength.
2239 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
2242 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
2245 *) New function DH_compute_key_padded() to compute a DH key and pad with
2246 leading zeroes if needed: this complies with SP800-56A et al.
2249 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
2250 anything, incomplete, subject to change and largely untested at present.
2253 *) Modify fipscanisteronly build option to only build the necessary object
2254 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
2257 *) Add experimental option FIPSSYMS to give all symbols in
2258 fipscanister.o and FIPS or fips prefix. This will avoid
2259 conflicts with future versions of OpenSSL. Add perl script
2260 util/fipsas.pl to preprocess assembly language source files
2261 and rename any affected symbols.
2264 *) Add selftest checks and algorithm block of non-fips algorithms in
2265 FIPS mode. Remove DES2 from selftests.
2268 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
2269 return internal method without any ENGINE dependencies. Add new
2270 tiny fips sign and verify functions.
2273 *) New build option no-ec2m to disable characteristic 2 code.
2276 *) New build option "fipscanisteronly". This only builds fipscanister.o
2277 and (currently) associated fips utilities. Uses the file Makefile.fips
2278 instead of Makefile.org as the prototype.
2281 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
2282 Update fips_gcmtest to use IV generator.
2285 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
2286 setting output buffer to NULL. The *Final function must be
2287 called although it will not retrieve any additional data. The tag
2288 can be set or retrieved with a ctrl. The IV length is by default 12
2289 bytes (96 bits) but can be set to an alternative value. If the IV
2290 length exceeds the maximum IV length (currently 16 bytes) it cannot be
2294 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
2295 underlying do_cipher function handles all cipher semantics itself
2296 including padding and finalisation. This is useful if (for example)
2297 an ENGINE cipher handles block padding itself. The behaviour of
2298 do_cipher is subtly changed if this flag is set: the return value
2299 is the number of characters written to the output buffer (zero is
2300 no longer an error code) or a negative error code. Also if the
2301 input buffer is NULL and length 0 finalisation should be performed.
2304 *) If a candidate issuer certificate is already part of the constructed
2305 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
2308 *) Improve forward-security support: add functions
2310 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
2311 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
2313 for use by SSL/TLS servers; the callback function will be called whenever a
2314 new session is created, and gets to decide whether the session may be
2315 cached to make it resumable (return 0) or not (return 1). (As by the
2316 SSL/TLS protocol specifications, the session_id sent by the server will be
2317 empty to indicate that the session is not resumable; also, the server will
2318 not generate RFC 4507 (RFC 5077) session tickets.)
2320 A simple reasonable callback implementation is to return is_forward_secure.
2321 This parameter will be set to 1 or 0 depending on the ciphersuite selected
2322 by the SSL/TLS server library, indicating whether it can provide forward
2324 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
2326 *) New -verify_name option in command line utilities to set verification
2330 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
2331 Add CMAC pkey methods.
2334 *) Experimental renegotiation in s_server -www mode. If the client
2335 browses /reneg connection is renegotiated. If /renegcert it is
2336 renegotiated requesting a certificate.
2339 *) Add an "external" session cache for debugging purposes to s_server. This
2340 should help trace issues which normally are only apparent in deployed
2341 multi-process servers.
2344 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
2345 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
2346 BIO_set_cipher() and some obscure PEM functions were changed so they
2347 can now return an error. The RAND changes required a change to the
2348 RAND_METHOD structure.
2351 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
2352 a gcc attribute to warn if the result of a function is ignored. This
2353 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
2354 whose return value is often ignored.
2357 *) New -noct, -requestct, -requirect and -ctlogfile options for s_client.
2358 These allow SCTs (signed certificate timestamps) to be requested and
2359 validated when establishing a connection.
2360 [Rob Percival <robpercival@google.com>]
2362 Changes between 1.0.2g and 1.0.2h [3 May 2016]
2364 *) Prevent padding oracle in AES-NI CBC MAC check
2366 A MITM attacker can use a padding oracle attack to decrypt traffic
2367 when the connection uses an AES CBC cipher and the server support
2370 This issue was introduced as part of the fix for Lucky 13 padding
2371 attack (CVE-2013-0169). The padding check was rewritten to be in
2372 constant time by making sure that always the same bytes are read and
2373 compared against either the MAC or padding bytes. But it no longer
2374 checked that there was enough data to have both the MAC and padding
2377 This issue was reported by Juraj Somorovsky using TLS-Attacker.
2381 *) Fix EVP_EncodeUpdate overflow
2383 An overflow can occur in the EVP_EncodeUpdate() function which is used for
2384 Base64 encoding of binary data. If an attacker is able to supply very large
2385 amounts of input data then a length check can overflow resulting in a heap
2388 Internally to OpenSSL the EVP_EncodeUpdate() function is primarily used by
2389 the PEM_write_bio* family of functions. These are mainly used within the
2390 OpenSSL command line applications, so any application which processes data
2391 from an untrusted source and outputs it as a PEM file should be considered
2392 vulnerable to this issue. User applications that call these APIs directly
2393 with large amounts of untrusted data may also be vulnerable.
2395 This issue was reported by Guido Vranken.
2399 *) Fix EVP_EncryptUpdate overflow
2401 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker
2402 is able to supply very large amounts of input data after a previous call to
2403 EVP_EncryptUpdate() with a partial block then a length check can overflow
2404 resulting in a heap corruption. Following an analysis of all OpenSSL
2405 internal usage of the EVP_EncryptUpdate() function all usage is one of two
2406 forms. The first form is where the EVP_EncryptUpdate() call is known to be
2407 the first called function after an EVP_EncryptInit(), and therefore that
2408 specific call must be safe. The second form is where the length passed to
2409 EVP_EncryptUpdate() can be seen from the code to be some small value and
2410 therefore there is no possibility of an overflow. Since all instances are
2411 one of these two forms, it is believed that there can be no overflows in
2412 internal code due to this problem. It should be noted that
2413 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths.
2414 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances
2415 of these calls have also been analysed too and it is believed there are no
2416 instances in internal usage where an overflow could occur.
2418 This issue was reported by Guido Vranken.
2422 *) Prevent ASN.1 BIO excessive memory allocation
2424 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio()
2425 a short invalid encoding can cause allocation of large amounts of memory
2426 potentially consuming excessive resources or exhausting memory.
2428 Any application parsing untrusted data through d2i BIO functions is
2429 affected. The memory based functions such as d2i_X509() are *not* affected.
2430 Since the memory based functions are used by the TLS library, TLS
2431 applications are not affected.
2433 This issue was reported by Brian Carpenter.
2439 ASN1 Strings that are over 1024 bytes can cause an overread in applications
2440 using the X509_NAME_oneline() function on EBCDIC systems. This could result
2441 in arbitrary stack data being returned in the buffer.
2443 This issue was reported by Guido Vranken.
2447 *) Modify behavior of ALPN to invoke callback after SNI/servername
2448 callback, such that updates to the SSL_CTX affect ALPN.
2451 *) Remove LOW from the DEFAULT cipher list. This removes singles DES from the
2455 *) Only remove the SSLv2 methods with the no-ssl2-method option. When the
2456 methods are enabled and ssl2 is disabled the methods return NULL.
2459 Changes between 1.0.2f and 1.0.2g [1 Mar 2016]
2461 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
2462 Builds that are not configured with "enable-weak-ssl-ciphers" will not
2463 provide any "EXPORT" or "LOW" strength ciphers.
2466 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2
2467 is by default disabled at build-time. Builds that are not configured with
2468 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used,
2469 users who want to negotiate SSLv2 via the version-flexible SSLv23_method()
2470 will need to explicitly call either of:
2472 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
2474 SSL_clear_options(ssl, SSL_OP_NO_SSLv2);
2476 as appropriate. Even if either of those is used, or the application
2477 explicitly uses the version-specific SSLv2_method() or its client and
2478 server variants, SSLv2 ciphers vulnerable to exhaustive search key
2479 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT
2480 ciphers, and SSLv2 56-bit DES are no longer available.
2484 *) Fix a double-free in DSA code
2486 A double free bug was discovered when OpenSSL parses malformed DSA private
2487 keys and could lead to a DoS attack or memory corruption for applications
2488 that receive DSA private keys from untrusted sources. This scenario is
2491 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using
2496 *) Disable SRP fake user seed to address a server memory leak.
2498 Add a new method SRP_VBASE_get1_by_user that handles the seed properly.
2500 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
2501 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user
2502 was changed to ignore the "fake user" SRP seed, even if the seed
2505 Users should use SRP_VBASE_get1_by_user instead. Note that in
2506 SRP_VBASE_get1_by_user, caller must free the returned value. Note
2507 also that even though configuring the SRP seed attempts to hide
2508 invalid usernames by continuing the handshake with fake
2509 credentials, this behaviour is not constant time and no strong
2510 guarantees are made that the handshake is indistinguishable from
2511 that of a valid user.
2515 *) Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
2517 In the BN_hex2bn function the number of hex digits is calculated using an
2518 int value |i|. Later |bn_expand| is called with a value of |i * 4|. For
2519 large values of |i| this can result in |bn_expand| not allocating any
2520 memory because |i * 4| is negative. This can leave the internal BIGNUM data
2521 field as NULL leading to a subsequent NULL ptr deref. For very large values
2522 of |i|, the calculation |i * 4| could be a positive value smaller than |i|.
2523 In this case memory is allocated to the internal BIGNUM data field, but it
2524 is insufficiently sized leading to heap corruption. A similar issue exists
2525 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn
2526 is ever called by user applications with very large untrusted hex/dec data.
2527 This is anticipated to be a rare occurrence.
2529 All OpenSSL internal usage of these functions use data that is not expected
2530 to be untrusted, e.g. config file data or application command line
2531 arguments. If user developed applications generate config file data based
2532 on untrusted data then it is possible that this could also lead to security
2533 consequences. This is also anticipated to be rare.
2535 This issue was reported to OpenSSL by Guido Vranken.
2539 *) Fix memory issues in BIO_*printf functions
2541 The internal |fmtstr| function used in processing a "%s" format string in
2542 the BIO_*printf functions could overflow while calculating the length of a
2543 string and cause an OOB read when printing very long strings.
2545 Additionally the internal |doapr_outch| function can attempt to write to an
2546 OOB memory location (at an offset from the NULL pointer) in the event of a
2547 memory allocation failure. In 1.0.2 and below this could be caused where
2548 the size of a buffer to be allocated is greater than INT_MAX. E.g. this
2549 could be in processing a very long "%s" format string. Memory leaks can
2552 The first issue may mask the second issue dependent on compiler behaviour.
2553 These problems could enable attacks where large amounts of untrusted data
2554 is passed to the BIO_*printf functions. If applications use these functions
2555 in this way then they could be vulnerable. OpenSSL itself uses these
2556 functions when printing out human-readable dumps of ASN.1 data. Therefore
2557 applications that print this data could be vulnerable if the data is from
2558 untrusted sources. OpenSSL command line applications could also be
2559 vulnerable where they print out ASN.1 data, or if untrusted data is passed
2560 as command line arguments.
2562 Libssl is not considered directly vulnerable. Additionally certificates etc
2563 received via remote connections via libssl are also unlikely to be able to
2564 trigger these issues because of message size limits enforced within libssl.
2566 This issue was reported to OpenSSL Guido Vranken.
2570 *) Side channel attack on modular exponentiation
2572 A side-channel attack was found which makes use of cache-bank conflicts on
2573 the Intel Sandy-Bridge microarchitecture which could lead to the recovery
2574 of RSA keys. The ability to exploit this issue is limited as it relies on
2575 an attacker who has control of code in a thread running on the same
2576 hyper-threaded core as the victim thread which is performing decryptions.
2578 This issue was reported to OpenSSL by Yuval Yarom, The University of
2579 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and
2580 Nadia Heninger, University of Pennsylvania with more information at
2581 http://cachebleed.info.
2585 *) Change the req app to generate a 2048-bit RSA/DSA key by default,
2586 if no keysize is specified with default_bits. This fixes an
2587 omission in an earlier change that changed all RSA/DSA key generation
2588 apps to use 2048 bits by default.
2591 Changes between 1.0.2e and 1.0.2f [28 Jan 2016]
2592 *) DH small subgroups
2594 Historically OpenSSL only ever generated DH parameters based on "safe"
2595 primes. More recently (in version 1.0.2) support was provided for
2596 generating X9.42 style parameter files such as those required for RFC 5114
2597 support. The primes used in such files may not be "safe". Where an
2598 application is using DH configured with parameters based on primes that are
2599 not "safe" then an attacker could use this fact to find a peer's private
2600 DH exponent. This attack requires that the attacker complete multiple
2601 handshakes in which the peer uses the same private DH exponent. For example
2602 this could be used to discover a TLS server's private DH exponent if it's
2603 reusing the private DH exponent or it's using a static DH ciphersuite.
2605 OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in
2606 TLS. It is not on by default. If the option is not set then the server
2607 reuses the same private DH exponent for the life of the server process and
2608 would be vulnerable to this attack. It is believed that many popular
2609 applications do set this option and would therefore not be at risk.
2611 The fix for this issue adds an additional check where a "q" parameter is
2612 available (as is the case in X9.42 based parameters). This detects the
2613 only known attack, and is the only possible defense for static DH
2614 ciphersuites. This could have some performance impact.
2616 Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by
2617 default and cannot be disabled. This could have some performance impact.
2619 This issue was reported to OpenSSL by Antonio Sanso (Adobe).
2623 *) SSLv2 doesn't block disabled ciphers
2625 A malicious client can negotiate SSLv2 ciphers that have been disabled on
2626 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have
2627 been disabled, provided that the SSLv2 protocol was not also disabled via
2630 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram
2631 and Sebastian Schinzel.
2635 Changes between 1.0.2d and 1.0.2e [3 Dec 2015]
2637 *) BN_mod_exp may produce incorrect results on x86_64
2639 There is a carry propagating bug in the x86_64 Montgomery squaring
2640 procedure. No EC algorithms are affected. Analysis suggests that attacks
2641 against RSA and DSA as a result of this defect would be very difficult to
2642 perform and are not believed likely. Attacks against DH are considered just
2643 feasible (although very difficult) because most of the work necessary to
2644 deduce information about a private key may be performed offline. The amount
2645 of resources required for such an attack would be very significant and
2646 likely only accessible to a limited number of attackers. An attacker would
2647 additionally need online access to an unpatched system using the target
2648 private key in a scenario with persistent DH parameters and a private
2649 key that is shared between multiple clients. For example this can occur by
2650 default in OpenSSL DHE based SSL/TLS ciphersuites.
2652 This issue was reported to OpenSSL by Hanno Böck.
2656 *) Certificate verify crash with missing PSS parameter
2658 The signature verification routines will crash with a NULL pointer
2659 dereference if presented with an ASN.1 signature using the RSA PSS
2660 algorithm and absent mask generation function parameter. Since these
2661 routines are used to verify certificate signature algorithms this can be
2662 used to crash any certificate verification operation and exploited in a
2663 DoS attack. Any application which performs certificate verification is
2664 vulnerable including OpenSSL clients and servers which enable client
2667 This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
2671 *) X509_ATTRIBUTE memory leak
2673 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
2674 memory. This structure is used by the PKCS#7 and CMS routines so any
2675 application which reads PKCS#7 or CMS data from untrusted sources is
2676 affected. SSL/TLS is not affected.
2678 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
2683 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
2684 This changes the decoding behaviour for some invalid messages,
2685 though the change is mostly in the more lenient direction, and
2686 legacy behaviour is preserved as much as possible.
2689 *) In DSA_generate_parameters_ex, if the provided seed is too short,
2691 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
2693 Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
2695 *) Alternate chains certificate forgery
2697 During certificate verification, OpenSSL will attempt to find an
2698 alternative certificate chain if the first attempt to build such a chain
2699 fails. An error in the implementation of this logic can mean that an
2700 attacker could cause certain checks on untrusted certificates to be
2701 bypassed, such as the CA flag, enabling them to use a valid leaf
2702 certificate to act as a CA and "issue" an invalid certificate.
2704 This issue was reported to OpenSSL by Adam Langley/David Benjamin
2708 Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
2710 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI
2711 incompatibility in the handling of HMAC. The previous ABI has now been
2715 Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
2717 *) Malformed ECParameters causes infinite loop
2719 When processing an ECParameters structure OpenSSL enters an infinite loop
2720 if the curve specified is over a specially malformed binary polynomial
2723 This can be used to perform denial of service against any
2724 system which processes public keys, certificate requests or
2725 certificates. This includes TLS clients and TLS servers with
2726 client authentication enabled.
2728 This issue was reported to OpenSSL by Joseph Barr-Pixton.
2732 *) Exploitable out-of-bounds read in X509_cmp_time
2734 X509_cmp_time does not properly check the length of the ASN1_TIME
2735 string and can read a few bytes out of bounds. In addition,
2736 X509_cmp_time accepts an arbitrary number of fractional seconds in the
2739 An attacker can use this to craft malformed certificates and CRLs of
2740 various sizes and potentially cause a segmentation fault, resulting in
2741 a DoS on applications that verify certificates or CRLs. TLS clients
2742 that verify CRLs are affected. TLS clients and servers with client
2743 authentication enabled may be affected if they use custom verification
2746 This issue was reported to OpenSSL by Robert Swiecki (Google), and
2747 independently by Hanno Böck.
2751 *) PKCS7 crash with missing EnvelopedContent
2753 The PKCS#7 parsing code does not handle missing inner EncryptedContent
2754 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
2755 with missing content and trigger a NULL pointer dereference on parsing.
2757 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
2758 structures from untrusted sources are affected. OpenSSL clients and
2759 servers are not affected.
2761 This issue was reported to OpenSSL by Michal Zalewski (Google).
2765 *) CMS verify infinite loop with unknown hash function
2767 When verifying a signedData message the CMS code can enter an infinite loop
2768 if presented with an unknown hash function OID. This can be used to perform
2769 denial of service against any system which verifies signedData messages using
2771 This issue was reported to OpenSSL by Johannes Bauer.
2775 *) Race condition handling NewSessionTicket
2777 If a NewSessionTicket is received by a multi-threaded client when attempting to
2778 reuse a previous ticket then a race condition can occur potentially leading to
2779 a double free of the ticket data.
2783 *) Only support 256-bit or stronger elliptic curves with the
2784 'ecdh_auto' setting (server) or by default (client). Of supported
2785 curves, prefer P-256 (both).
2788 Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
2790 *) ClientHello sigalgs DoS fix
2792 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
2793 invalid signature algorithms extension a NULL pointer dereference will
2794 occur. This can be exploited in a DoS attack against the server.
2796 This issue was was reported to OpenSSL by David Ramos of Stanford
2799 [Stephen Henson and Matt Caswell]
2801 *) Multiblock corrupted pointer fix
2803 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
2804 feature only applies on 64 bit x86 architecture platforms that support AES
2805 NI instructions. A defect in the implementation of "multiblock" can cause
2806 OpenSSL's internal write buffer to become incorrectly set to NULL when
2807 using non-blocking IO. Typically, when the user application is using a
2808 socket BIO for writing, this will only result in a failed connection.
2809 However if some other BIO is used then it is likely that a segmentation
2810 fault will be triggered, thus enabling a potential DoS attack.
2812 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
2816 *) Segmentation fault in DTLSv1_listen fix
2818 The DTLSv1_listen function is intended to be stateless and processes the
2819 initial ClientHello from many peers. It is common for user code to loop
2820 over the call to DTLSv1_listen until a valid ClientHello is received with
2821 an associated cookie. A defect in the implementation of DTLSv1_listen means
2822 that state is preserved in the SSL object from one invocation to the next
2823 that can lead to a segmentation fault. Errors processing the initial
2824 ClientHello can trigger this scenario. An example of such an error could be
2825 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
2828 This issue was reported to OpenSSL by Per Allansson.
2832 *) Segmentation fault in ASN1_TYPE_cmp fix
2834 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
2835 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
2836 certificate signature algorithm consistency this can be used to crash any
2837 certificate verification operation and exploited in a DoS attack. Any
2838 application which performs certificate verification is vulnerable including
2839 OpenSSL clients and servers which enable client authentication.
2843 *) Segmentation fault for invalid PSS parameters fix
2845 The signature verification routines will crash with a NULL pointer
2846 dereference if presented with an ASN.1 signature using the RSA PSS
2847 algorithm and invalid parameters. Since these routines are used to verify
2848 certificate signature algorithms this can be used to crash any
2849 certificate verification operation and exploited in a DoS attack. Any
2850 application which performs certificate verification is vulnerable including
2851 OpenSSL clients and servers which enable client authentication.
2853 This issue was was reported to OpenSSL by Brian Carpenter.
2857 *) ASN.1 structure reuse memory corruption fix
2859 Reusing a structure in ASN.1 parsing may allow an attacker to cause
2860 memory corruption via an invalid write. Such reuse is and has been
2861 strongly discouraged and is believed to be rare.
2863 Applications that parse structures containing CHOICE or ANY DEFINED BY
2864 components may be affected. Certificate parsing (d2i_X509 and related
2865 functions) are however not affected. OpenSSL clients and servers are
2870 *) PKCS7 NULL pointer dereferences fix
2872 The PKCS#7 parsing code does not handle missing outer ContentInfo
2873 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
2874 missing content and trigger a NULL pointer dereference on parsing.
2876 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
2877 otherwise parse PKCS#7 structures from untrusted sources are
2878 affected. OpenSSL clients and servers are not affected.
2880 This issue was reported to OpenSSL by Michal Zalewski (Google).
2884 *) DoS via reachable assert in SSLv2 servers fix
2886 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
2887 servers that both support SSLv2 and enable export cipher suites by sending
2888 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
2890 This issue was discovered by Sean Burford (Google) and Emilia Käsper
2891 (OpenSSL development team).
2895 *) Empty CKE with client auth and DHE fix
2897 If client auth is used then a server can seg fault in the event of a DHE
2898 ciphersuite being selected and a zero length ClientKeyExchange message
2899 being sent by the client. This could be exploited in a DoS attack.
2903 *) Handshake with unseeded PRNG fix
2905 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
2906 with an unseeded PRNG. The conditions are:
2907 - The client is on a platform where the PRNG has not been seeded
2908 automatically, and the user has not seeded manually
2909 - A protocol specific client method version has been used (i.e. not
2910 SSL_client_methodv23)
2911 - A ciphersuite is used that does not require additional random data from
2912 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
2914 If the handshake succeeds then the client random that has been used will
2915 have been generated from a PRNG with insufficient entropy and therefore the
2916 output may be predictable.
2918 For example using the following command with an unseeded openssl will
2919 succeed on an unpatched platform:
2921 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
2925 *) Use After Free following d2i_ECPrivatekey error fix
2927 A malformed EC private key file consumed via the d2i_ECPrivateKey function
2928 could cause a use after free condition. This, in turn, could cause a double
2929 free in several private key parsing functions (such as d2i_PrivateKey
2930 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
2931 for applications that receive EC private keys from untrusted
2932 sources. This scenario is considered rare.
2934 This issue was discovered by the BoringSSL project and fixed in their
2939 *) X509_to_X509_REQ NULL pointer deref fix
2941 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
2942 the certificate key is invalid. This function is rarely used in practice.
2944 This issue was discovered by Brian Carpenter.
2948 *) Removed the export ciphers from the DEFAULT ciphers
2951 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
2953 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
2954 ARMv5 through ARMv8, as opposite to "locking" it to single one.
2955 So far those who have to target multiple platforms would compromise
2956 and argue that binary targeting say ARMv5 would still execute on
2957 ARMv8. "Universal" build resolves this compromise by providing
2958 near-optimal performance even on newer platforms.
2961 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
2962 (other platforms pending).
2963 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
2965 *) Add support for the SignedCertificateTimestampList certificate and
2966 OCSP response extensions from RFC6962.
2969 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
2970 for corner cases. (Certain input points at infinity could lead to
2971 bogus results, with non-infinity inputs mapped to infinity too.)
2974 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
2975 This covers AES, SHA256/512 and GHASH. "Initial" means that most
2976 common cases are optimized and there still is room for further
2977 improvements. Vector Permutation AES for Altivec is also added.
2980 *) Add support for little-endian ppc64 Linux target.
2981 [Marcelo Cerri (IBM)]
2983 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
2984 SHA1, SHA256 and GHASH. "Initial" means that most common cases
2985 are optimized and there still is room for further improvements.
2986 Both 32- and 64-bit modes are supported.
2987 [Andy Polyakov, Ard Biesheuvel (Linaro)]
2989 *) Improved ARMv7 NEON support.
2992 *) Support for SPARC Architecture 2011 crypto extensions, first
2993 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
2994 SHA256/512, MD5, GHASH and modular exponentiation.
2995 [Andy Polyakov, David Miller]
2997 *) Accelerated modular exponentiation for Intel processors, a.k.a.
2999 [Shay Gueron & Vlad Krasnov (Intel Corp)]
3001 *) Support for new and upcoming Intel processors, including AVX2,
3002 BMI and SHA ISA extensions. This includes additional "stitched"
3003 implementations, AESNI-SHA256 and GCM, and multi-buffer support
3006 This work was sponsored by Intel Corp.
3009 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
3010 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
3011 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
3014 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
3015 this fixes a limitation in previous versions of OpenSSL.
3018 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
3019 MGF1 digest and OAEP label.
3022 *) Add EVP support for key wrapping algorithms, to avoid problems with
3023 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
3024 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
3025 algorithms and include tests cases.
3028 *) Add functions to allocate and set the fields of an ECDSA_METHOD
3030 [Douglas E. Engert, Steve Henson]
3032 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
3033 difference in days and seconds between two tm or ASN1_TIME structures.
3036 *) Add -rev test option to s_server to just reverse order of characters
3037 received by client and send back to server. Also prints an abbreviated
3038 summary of the connection parameters.
3041 *) New option -brief for s_client and s_server to print out a brief summary
3042 of connection parameters.
3045 *) Add callbacks for arbitrary TLS extensions.
3046 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
3048 *) New option -crl_download in several openssl utilities to download CRLs
3049 from CRLDP extension in certificates.
3052 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
3055 *) New function X509_CRL_diff to generate a delta CRL from the difference
3056 of two full CRLs. Add support to "crl" utility.
3059 *) New functions to set lookup_crls function and to retrieve
3060 X509_STORE from X509_STORE_CTX.
3063 *) Print out deprecated issuer and subject unique ID fields in
3067 *) Extend OCSP I/O functions so they can be used for simple general purpose
3068 HTTP as well as OCSP. New wrapper function which can be used to download
3069 CRLs using the OCSP API.
3072 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
3075 *) SSL_CONF* functions. These provide a common framework for application
3076 configuration using configuration files or command lines.
3079 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
3080 message callback and prints the results. Needs compile time option
3081 "enable-ssl-trace". New options to s_client and s_server to enable
3085 *) New ctrl and macro to retrieve supported points extensions.
3086 Print out extension in s_server and s_client.
3089 *) New functions to retrieve certificate signature and signature
3093 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
3097 *) New Suite B modes for TLS code. These use and enforce the requirements
3098 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
3099 only use Suite B curves. The Suite B modes can be set by using the
3100 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
3103 *) New chain verification flags for Suite B levels of security. Check
3104 algorithms are acceptable when flags are set in X509_verify_cert.
3107 *) Make tls1_check_chain return a set of flags indicating checks passed
3108 by a certificate chain. Add additional tests to handle client
3109 certificates: checks for matching certificate type and issuer name
3113 *) If an attempt is made to use a signature algorithm not in the peer
3114 preference list abort the handshake. If client has no suitable
3115 signature algorithms in response to a certificate request do not
3116 use the certificate.
3119 *) If server EC tmp key is not in client preference list abort handshake.
3122 *) Add support for certificate stores in CERT structure. This makes it
3123 possible to have different stores per SSL structure or one store in
3124 the parent SSL_CTX. Include distinct stores for certificate chain
3125 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
3126 to build and store a certificate chain in CERT structure: returning
3127 an error if the chain cannot be built: this will allow applications
3128 to test if a chain is correctly configured.
3130 Note: if the CERT based stores are not set then the parent SSL_CTX
3131 store is used to retain compatibility with existing behaviour.
3135 *) New function ssl_set_client_disabled to set a ciphersuite disabled
3136 mask based on the current session, check mask when sending client
3137 hello and checking the requested ciphersuite.
3140 *) New ctrls to retrieve and set certificate types in a certificate
3141 request message. Print out received values in s_client. If certificate
3142 types is not set with custom values set sensible values based on
3143 supported signature algorithms.
3146 *) Support for distinct client and server supported signature algorithms.
3149 *) Add certificate callback. If set this is called whenever a certificate
3150 is required by client or server. An application can decide which
3151 certificate chain to present based on arbitrary criteria: for example
3152 supported signature algorithms. Add very simple example to s_server.
3153 This fixes many of the problems and restrictions of the existing client
3154 certificate callback: for example you can now clear an existing
3155 certificate and specify the whole chain.
3158 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
3159 the certificate can be used for (if anything). Set valid_flags field
3160 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
3161 to have similar checks in it.
3163 Add new "cert_flags" field to CERT structure and include a "strict mode".
3164 This enforces some TLS certificate requirements (such as only permitting
3165 certificate signature algorithms contained in the supported algorithms
3166 extension) which some implementations ignore: this option should be used
3167 with caution as it could cause interoperability issues.
3170 *) Update and tidy signature algorithm extension processing. Work out
3171 shared signature algorithms based on preferences and peer algorithms
3172 and print them out in s_client and s_server. Abort handshake if no
3173 shared signature algorithms.
3176 *) Add new functions to allow customised supported signature algorithms
3177 for SSL and SSL_CTX structures. Add options to s_client and s_server
3181 *) New function SSL_certs_clear() to delete all references to certificates
3182 from an SSL structure. Before this once a certificate had been added
3183 it couldn't be removed.
3186 *) Integrate hostname, email address and IP address checking with certificate
3187 verification. New verify options supporting checking in openssl utility.
3190 *) Fixes and wildcard matching support to hostname and email checking
3191 functions. Add manual page.
3192 [Florian Weimer (Red Hat Product Security Team)]
3194 *) New functions to check a hostname email or IP address against a
3195 certificate. Add options x509 utility to print results of checks against
3199 *) Fix OCSP checking.
3200 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
3202 *) Initial experimental support for explicitly trusted non-root CAs.
3203 OpenSSL still tries to build a complete chain to a root but if an
3204 intermediate CA has a trust setting included that is used. The first
3205 setting is used: whether to trust (e.g., -addtrust option to the x509
3209 *) Add -trusted_first option which attempts to find certificates in the
3210 trusted store even if an untrusted chain is also supplied.
3213 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
3214 platform support for Linux and Android.
3217 *) Support for linux-x32, ILP32 environment in x86_64 framework.
3220 *) Experimental multi-implementation support for FIPS capable OpenSSL.
3221 When in FIPS mode the approved implementations are used as normal,
3222 when not in FIPS mode the internal unapproved versions are used instead.
3223 This means that the FIPS capable OpenSSL isn't forced to use the
3224 (often lower performance) FIPS implementations outside FIPS mode.
3227 *) Transparently support X9.42 DH parameters when calling
3228 PEM_read_bio_DHparameters. This means existing applications can handle
3229 the new parameter format automatically.
3232 *) Initial experimental support for X9.42 DH parameter format: mainly
3233 to support use of 'q' parameter for RFC5114 parameters.
3236 *) Add DH parameters from RFC5114 including test data to dhtest.
3239 *) Support for automatic EC temporary key parameter selection. If enabled
3240 the most preferred EC parameters are automatically used instead of
3241 hardcoded fixed parameters. Now a server just has to call:
3242 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
3243 support ECDH and use the most appropriate parameters.
3246 *) Enhance and tidy EC curve and point format TLS extension code. Use
3247 static structures instead of allocation if default values are used.
3248 New ctrls to set curves we wish to support and to retrieve shared curves.
3249 Print out shared curves in s_server. New options to s_server and s_client
3250 to set list of supported curves.
3253 *) New ctrls to retrieve supported signature algorithms and
3254 supported curve values as an array of NIDs. Extend openssl utility
3255 to print out received values.
3258 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
3259 between NIDs and the more common NIST names such as "P-256". Enhance
3260 ecparam utility and ECC method to recognise the NIST names for curves.
3263 *) Enhance SSL/TLS certificate chain handling to support different
3264 chains for each certificate instead of one chain in the parent SSL_CTX.
3267 *) Support for fixed DH ciphersuite client authentication: where both
3268 server and client use DH certificates with common parameters.
3271 *) Support for fixed DH ciphersuites: those requiring DH server
3275 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
3277 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
3278 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
3279 X509_CINF_get_signature were reverted post internal team review.
3281 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
3283 *) Build fixes for the Windows and OpenVMS platforms
3284 [Matt Caswell and Richard Levitte]
3286 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
3288 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
3289 message can cause a segmentation fault in OpenSSL due to a NULL pointer
3290 dereference. This could lead to a Denial Of Service attack. Thanks to
3291 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
3295 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
3296 dtls1_buffer_record function under certain conditions. In particular this
3297 could occur if an attacker sent repeated DTLS records with the same
3298 sequence number but for the next epoch. The memory leak could be exploited
3299 by an attacker in a Denial of Service attack through memory exhaustion.
3300 Thanks to Chris Mueller for reporting this issue.
3304 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
3305 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
3306 method would be set to NULL which could later result in a NULL pointer
3307 dereference. Thanks to Frank Schmirler for reporting this issue.
3311 *) Abort handshake if server key exchange message is omitted for ephemeral
3314 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
3315 reporting this issue.
3319 *) Remove non-export ephemeral RSA code on client and server. This code
3320 violated the TLS standard by allowing the use of temporary RSA keys in
3321 non-export ciphersuites and could be used by a server to effectively
3322 downgrade the RSA key length used to a value smaller than the server
3323 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
3324 INRIA or reporting this issue.
3328 *) Fixed issue where DH client certificates are accepted without verification.
3329 An OpenSSL server will accept a DH certificate for client authentication
3330 without the certificate verify message. This effectively allows a client to
3331 authenticate without the use of a private key. This only affects servers
3332 which trust a client certificate authority which issues certificates
3333 containing DH keys: these are extremely rare and hardly ever encountered.
3334 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
3339 *) Ensure that the session ID context of an SSL is updated when its
3340 SSL_CTX is updated via SSL_set_SSL_CTX.
3342 The session ID context is typically set from the parent SSL_CTX,
3343 and can vary with the CTX.
3346 *) Fix various certificate fingerprint issues.
3348 By using non-DER or invalid encodings outside the signed portion of a
3349 certificate the fingerprint can be changed without breaking the signature.
3350 Although no details of the signed portion of the certificate can be changed
3351 this can cause problems with some applications: e.g. those using the
3352 certificate fingerprint for blacklists.
3354 1. Reject signatures with non zero unused bits.
3356 If the BIT STRING containing the signature has non zero unused bits reject
3357 the signature. All current signature algorithms require zero unused bits.
3359 2. Check certificate algorithm consistency.
3361 Check the AlgorithmIdentifier inside TBS matches the one in the
3362 certificate signature. NB: this will result in signature failure
3363 errors for some broken certificates.
3365 Thanks to Konrad Kraszewski from Google for reporting this issue.
3367 3. Check DSA/ECDSA signatures use DER.
3369 Re-encode DSA/ECDSA signatures and compare with the original received
3370 signature. Return an error if there is a mismatch.
3372 This will reject various cases including garbage after signature
3373 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
3374 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
3375 (negative or with leading zeroes).
3377 Further analysis was conducted and fixes were developed by Stephen Henson
3378 of the OpenSSL core team.
3383 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
3384 results on some platforms, including x86_64. This bug occurs at random
3385 with a very low probability, and is not known to be exploitable in any
3386 way, though its exact impact is difficult to determine. Thanks to Pieter
3387 Wuille (Blockstream) who reported this issue and also suggested an initial
3388 fix. Further analysis was conducted by the OpenSSL development team and
3389 Adam Langley of Google. The final fix was developed by Andy Polyakov of
3390 the OpenSSL core team.
3394 *) Do not resume sessions on the server if the negotiated protocol
3395 version does not match the session's version. Resuming with a different
3396 version, while not strictly forbidden by the RFC, is of questionable
3397 sanity and breaks all known clients.
3398 [David Benjamin, Emilia Käsper]
3400 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
3401 early CCS messages during renegotiation. (Note that because
3402 renegotiation is encrypted, this early CCS was not exploitable.)
3405 *) Tighten client-side session ticket handling during renegotiation:
3406 ensure that the client only accepts a session ticket if the server sends
3407 the extension anew in the ServerHello. Previously, a TLS client would
3408 reuse the old extension state and thus accept a session ticket if one was
3409 announced in the initial ServerHello.
3411 Similarly, ensure that the client requires a session ticket if one
3412 was advertised in the ServerHello. Previously, a TLS client would
3413 ignore a missing NewSessionTicket message.
3416 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
3418 *) SRTP Memory Leak.
3420 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
3421 sends a carefully crafted handshake message, to cause OpenSSL to fail
3422 to free up to 64k of memory causing a memory leak. This could be
3423 exploited in a Denial Of Service attack. This issue affects OpenSSL
3424 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
3425 whether SRTP is used or configured. Implementations of OpenSSL that
3426 have been compiled with OPENSSL_NO_SRTP defined are not affected.
3428 The fix was developed by the OpenSSL team.
3432 *) Session Ticket Memory Leak.
3434 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
3435 integrity of that ticket is first verified. In the event of a session
3436 ticket integrity check failing, OpenSSL will fail to free memory
3437 causing a memory leak. By sending a large number of invalid session
3438 tickets an attacker could exploit this issue in a Denial Of Service
3443 *) Build option no-ssl3 is incomplete.
3445 When OpenSSL is configured with "no-ssl3" as a build option, servers
3446 could accept and complete a SSL 3.0 handshake, and clients could be
3447 configured to send them.
3449 [Akamai and the OpenSSL team]
3451 *) Add support for TLS_FALLBACK_SCSV.
3452 Client applications doing fallback retries should call
3453 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
3455 [Adam Langley, Bodo Moeller]
3457 *) Add additional DigestInfo checks.
3459 Re-encode DigestInto in DER and check against the original when
3460 verifying RSA signature: this will reject any improperly encoded
3461 DigestInfo structures.
3463 Note: this is a precautionary measure and no attacks are currently known.
3467 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
3469 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
3470 SRP code can be overrun an internal buffer. Add sanity check that
3471 g, A, B < N to SRP code.
3473 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
3474 Group for discovering this issue.
3478 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
3479 TLS 1.0 instead of higher protocol versions when the ClientHello message
3480 is badly fragmented. This allows a man-in-the-middle attacker to force a
3481 downgrade to TLS 1.0 even if both the server and the client support a
3482 higher protocol version, by modifying the client's TLS records.
3484 Thanks to David Benjamin and Adam Langley (Google) for discovering and
3485 researching this issue.
3489 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
3490 to a denial of service attack. A malicious server can crash the client
3491 with a null pointer dereference (read) by specifying an anonymous (EC)DH
3492 ciphersuite and sending carefully crafted handshake messages.
3494 Thanks to Felix Gröbert (Google) for discovering and researching this
3499 *) By sending carefully crafted DTLS packets an attacker could cause openssl
3500 to leak memory. This can be exploited through a Denial of Service attack.
3501 Thanks to Adam Langley for discovering and researching this issue.
3505 *) An attacker can force openssl to consume large amounts of memory whilst
3506 processing DTLS handshake messages. This can be exploited through a
3507 Denial of Service attack.
3508 Thanks to Adam Langley for discovering and researching this issue.
3512 *) An attacker can force an error condition which causes openssl to crash
3513 whilst processing DTLS packets due to memory being freed twice. This
3514 can be exploited through a Denial of Service attack.
3515 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
3520 *) If a multithreaded client connects to a malicious server using a resumed
3521 session and the server sends an ec point format extension it could write
3522 up to 255 bytes to freed memory.
3524 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
3529 *) A malicious server can crash an OpenSSL client with a null pointer
3530 dereference (read) by specifying an SRP ciphersuite even though it was not
3531 properly negotiated with the client. This can be exploited through a
3532 Denial of Service attack.
3534 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
3535 discovering and researching this issue.
3539 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
3540 X509_name_oneline, X509_name_print_ex et al. to leak some information
3541 from the stack. Applications may be affected if they echo pretty printing
3542 output to the attacker.
3544 Thanks to Ivan Fratric (Google) for discovering this issue.
3546 [Emilia Käsper, and Steve Henson]
3548 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
3549 for corner cases. (Certain input points at infinity could lead to
3550 bogus results, with non-infinity inputs mapped to infinity too.)
3553 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
3555 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
3556 handshake can force the use of weak keying material in OpenSSL
3557 SSL/TLS clients and servers.
3559 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
3560 researching this issue. (CVE-2014-0224)
3561 [KIKUCHI Masashi, Steve Henson]
3563 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
3564 OpenSSL DTLS client the code can be made to recurse eventually crashing
3567 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
3569 [Imre Rad, Steve Henson]
3571 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
3572 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
3573 client or server. This is potentially exploitable to run arbitrary
3574 code on a vulnerable client or server.
3576 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
3577 [Jüri Aedla, Steve Henson]
3579 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
3580 are subject to a denial of service attack.
3582 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
3583 this issue. (CVE-2014-3470)
3584 [Felix Gröbert, Ivan Fratric, Steve Henson]
3586 *) Harmonize version and its documentation. -f flag is used to display
3588 [mancha <mancha1@zoho.com>]
3590 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
3591 in i2d_ECPrivateKey.
3592 [mancha <mancha1@zoho.com>]
3594 *) Fix some double frees. These are not thought to be exploitable.
3595 [mancha <mancha1@zoho.com>]
3597 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
3599 *) A missing bounds check in the handling of the TLS heartbeat extension
3600 can be used to reveal up to 64k of memory to a connected client or
3603 Thanks for Neel Mehta of Google Security for discovering this bug and to
3604 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
3605 preparing the fix (CVE-2014-0160)
3606 [Adam Langley, Bodo Moeller]
3608 *) Fix for the attack described in the paper "Recovering OpenSSL
3609 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
3610 by Yuval Yarom and Naomi Benger. Details can be obtained from:
3611 http://eprint.iacr.org/2014/140
3613 Thanks to Yuval Yarom and Naomi Benger for discovering this
3614 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
3615 [Yuval Yarom and Naomi Benger]
3617 *) TLS pad extension: draft-agl-tls-padding-03
3619 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
3620 TLS client Hello record length value would otherwise be > 255 and
3621 less that 512 pad with a dummy extension containing zeroes so it
3622 is at least 512 bytes long.
3624 [Adam Langley, Steve Henson]
3626 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
3628 *) Fix for TLS record tampering bug. A carefully crafted invalid
3629 handshake could crash OpenSSL with a NULL pointer exception.
3630 Thanks to Anton Johansson for reporting this issues.
3633 *) Keep original DTLS digest and encryption contexts in retransmission
3634 structures so we can use the previous session parameters if they need
3635 to be resent. (CVE-2013-6450)
3638 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
3639 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
3640 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
3641 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
3642 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
3643 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
3644 [Rob Stradling, Adam Langley]
3646 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
3648 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
3649 supporting platforms or when small records were transferred.
3650 [Andy Polyakov, Steve Henson]
3652 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
3654 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
3656 This addresses the flaw in CBC record processing discovered by
3657 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
3658 at: http://www.isg.rhul.ac.uk/tls/
3660 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
3661 Security Group at Royal Holloway, University of London
3662 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
3663 Emilia Käsper for the initial patch.
3665 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
3667 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
3668 ciphersuites which can be exploited in a denial of service attack.
3669 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
3670 and detecting this bug and to Wolfgang Ettlinger
3671 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
3675 *) Return an error when checking OCSP signatures when key is NULL.
3676 This fixes a DoS attack. (CVE-2013-0166)
3679 *) Make openssl verify return errors.
3680 [Chris Palmer <palmer@google.com> and Ben Laurie]
3682 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
3683 the right response is stapled. Also change SSL_get_certificate()
3684 so it returns the certificate actually sent.
3685 See http://rt.openssl.org/Ticket/Display.html?id=2836.
3686 [Rob Stradling <rob.stradling@comodo.com>]
3688 *) Fix possible deadlock when decoding public keys.
3691 *) Don't use TLS 1.0 record version number in initial client hello
3695 Changes between 1.0.1b and 1.0.1c [10 May 2012]
3697 *) Sanity check record length before skipping explicit IV in TLS
3698 1.2, 1.1 and DTLS to fix DoS attack.
3700 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
3701 fuzzing as a service testing platform.
3705 *) Initialise tkeylen properly when encrypting CMS messages.
3706 Thanks to Solar Designer of Openwall for reporting this issue.
3709 *) In FIPS mode don't try to use composite ciphers as they are not
3713 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
3715 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
3716 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
3717 mean any application compiled against OpenSSL 1.0.0 headers setting
3718 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disabling
3719 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
3720 0x10000000L Any application which was previously compiled against
3721 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
3722 will need to be recompiled as a result. Letting be results in
3723 inability to disable specifically TLS 1.1 and in client context,
3724 in unlike event, limit maximum offered version to TLS 1.0 [see below].
3727 *) In order to ensure interoperability SSL_OP_NO_protocolX does not
3728 disable just protocol X, but all protocols above X *if* there are
3729 protocols *below* X still enabled. In more practical terms it means
3730 that if application wants to disable TLS1.0 in favor of TLS1.1 and
3731 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
3732 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
3736 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
3738 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
3739 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
3740 in CRYPTO_realloc_clean.
3742 Thanks to Tavis Ormandy, Google Security Team, for discovering this
3743 issue and to Adam Langley <agl@chromium.org> for fixing it.
3745 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
3747 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
3750 *) Workarounds for some broken servers that "hang" if a client hello
3751 record length exceeds 255 bytes.
3753 1. Do not use record version number > TLS 1.0 in initial client
3754 hello: some (but not all) hanging servers will now work.
3755 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
3756 the number of ciphers sent in the client hello. This should be
3757 set to an even number, such as 50, for example by passing:
3758 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
3759 Most broken servers should now work.
3760 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
3761 TLS 1.2 client support entirely.
3764 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
3767 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
3769 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
3770 STRING form instead of a DigestInfo.
3773 *) The format used for MDC2 RSA signatures is inconsistent between EVP
3774 and the RSA_sign/RSA_verify functions. This was made more apparent when
3775 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
3776 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
3777 the correct format in RSA_verify so both forms transparently work.
3780 *) Some servers which support TLS 1.0 can choke if we initially indicate
3781 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
3782 encrypted premaster secret. As a workaround use the maximum permitted
3783 client version in client hello, this should keep such servers happy
3784 and still work with previous versions of OpenSSL.
3787 *) Add support for TLS/DTLS heartbeats.
3788 [Robin Seggelmann <seggelmann@fh-muenster.de>]
3790 *) Add support for SCTP.
3791 [Robin Seggelmann <seggelmann@fh-muenster.de>]
3793 *) Improved PRNG seeding for VOS.
3794 [Paul Green <Paul.Green@stratus.com>]
3796 *) Extensive assembler packs updates, most notably:
3798 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
3799 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
3800 - x86_64: bit-sliced AES implementation;
3801 - ARM: NEON support, contemporary platforms optimizations;
3802 - s390x: z196 support;
3803 - *: GHASH and GF(2^m) multiplication implementations;
3807 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
3808 (removal of unnecessary code)
3809 [Peter Sylvester <peter.sylvester@edelweb.fr>]
3811 *) Add TLS key material exporter from RFC 5705.
3814 *) Add DTLS-SRTP negotiation from RFC 5764.
3817 *) Add Next Protocol Negotiation,
3818 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
3819 disabled with a no-npn flag to config or Configure. Code donated
3821 [Adam Langley <agl@google.com> and Ben Laurie]
3823 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
3824 NIST-P256, NIST-P521, with constant-time single point multiplication on
3825 typical inputs. Compiler support for the nonstandard type __uint128_t is
3826 required to use this (present in gcc 4.4 and later, for 64-bit builds).
3827 Code made available under Apache License version 2.0.
3829 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
3830 line to include this in your build of OpenSSL, and run "make depend" (or
3831 "make update"). This enables the following EC_METHODs:
3833 EC_GFp_nistp224_method()
3834 EC_GFp_nistp256_method()
3835 EC_GFp_nistp521_method()
3837 EC_GROUP_new_by_curve_name() will automatically use these (while
3838 EC_GROUP_new_curve_GFp() currently prefers the more flexible
3840 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
3842 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
3843 all platforms. Move ssize_t definition from e_os.h to the public
3844 header file e_os2.h as it now appears in public header file cms.h
3847 *) New -sigopt option to the ca, req and x509 utilities. Additional
3848 signature parameters can be passed using this option and in
3852 *) Add RSA PSS signing function. This will generate and set the
3853 appropriate AlgorithmIdentifiers for PSS based on those in the
3854 corresponding EVP_MD_CTX structure. No application support yet.
3857 *) Support for companion algorithm specific ASN1 signing routines.
3858 New function ASN1_item_sign_ctx() signs a pre-initialised
3859 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
3860 the appropriate parameters.
3863 *) Add new algorithm specific ASN1 verification initialisation function
3864 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
3865 handling will be the same no matter what EVP_PKEY_METHOD is used.
3866 Add a PSS handler to support verification of PSS signatures: checked
3867 against a number of sample certificates.
3870 *) Add signature printing for PSS. Add PSS OIDs.
3871 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
3873 *) Add algorithm specific signature printing. An individual ASN1 method
3874 can now print out signatures instead of the standard hex dump.
3876 More complex signatures (e.g. PSS) can print out more meaningful
3877 information. Include DSA version that prints out the signature
3881 *) Password based recipient info support for CMS library: implementing
3885 *) Split password based encryption into PBES2 and PBKDF2 functions. This
3886 neatly separates the code into cipher and PBE sections and is required
3887 for some algorithms that split PBES2 into separate pieces (such as
3888 password based CMS).
3891 *) Session-handling fixes:
3892 - Fix handling of connections that are resuming with a session ID,
3893 but also support Session Tickets.
3894 - Fix a bug that suppressed issuing of a new ticket if the client
3895 presented a ticket with an expired session.
3896 - Try to set the ticket lifetime hint to something reasonable.
3897 - Make tickets shorter by excluding irrelevant information.
3898 - On the client side, don't ignore renewed tickets.
3899 [Adam Langley, Bodo Moeller (Google)]
3901 *) Fix PSK session representation.
3904 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
3906 This work was sponsored by Intel.
3909 *) Add GCM support to TLS library. Some custom code is needed to split
3910 the IV between the fixed (from PRF) and explicit (from TLS record)
3911 portions. This adds all GCM ciphersuites supported by RFC5288 and
3912 RFC5289. Generalise some AES* cipherstrings to include GCM and
3913 add a special AESGCM string for GCM only.
3916 *) Expand range of ctrls for AES GCM. Permit setting invocation
3917 field on decrypt and retrieval of invocation field only on encrypt.
3920 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
3921 As required by RFC5289 these ciphersuites cannot be used if for
3922 versions of TLS earlier than 1.2.
3925 *) For FIPS capable OpenSSL interpret a NULL default public key method
3926 as unset and return the appropriate default but do *not* set the default.
3927 This means we can return the appropriate method in applications that
3928 switch between FIPS and non-FIPS modes.
3931 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
3932 ENGINE is used then we cannot handle that in the FIPS module so we
3933 keep original code iff non-FIPS operations are allowed.
3936 *) Add -attime option to openssl utilities.
3937 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
3939 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
3942 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
3943 FIPS EC methods unconditionally for now.
3946 *) New build option no-ec2m to disable characteristic 2 code.
3949 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
3950 all cases can be covered as some introduce binary incompatibilities.
3953 *) Redirect RSA operations to FIPS module including keygen,
3954 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
3957 *) Add similar low level API blocking to ciphers.
3960 *) Low level digest APIs are not approved in FIPS mode: any attempt
3961 to use these will cause a fatal error. Applications that *really* want
3962 to use them can use the private_* version instead.
3965 *) Redirect cipher operations to FIPS module for FIPS builds.
3968 *) Redirect digest operations to FIPS module for FIPS builds.
3971 *) Update build system to add "fips" flag which will link in fipscanister.o
3972 for static and shared library builds embedding a signature if needed.
3975 *) Output TLS supported curves in preference order instead of numerical
3976 order. This is currently hardcoded for the highest order curves first.
3977 This should be configurable so applications can judge speed vs strength.
3980 *) Add TLS v1.2 server support for client authentication.
3983 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
3987 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
3988 FIPS modules versions.
3991 *) Add TLS v1.2 client side support for client authentication. Keep cache
3992 of handshake records longer as we don't know the hash algorithm to use
3993 until after the certificate request message is received.
3996 *) Initial TLS v1.2 client support. Add a default signature algorithms
3997 extension including all the algorithms we support. Parse new signature
3998 format in client key exchange. Relax some ECC signing restrictions for
3999 TLS v1.2 as indicated in RFC5246.
4002 *) Add server support for TLS v1.2 signature algorithms extension. Switch
4003 to new signature format when needed using client digest preference.
4004 All server ciphersuites should now work correctly in TLS v1.2. No client
4005 support yet and no support for client certificates.
4008 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
4009 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
4010 ciphersuites. At present only RSA key exchange ciphersuites work with
4011 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
4012 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
4013 and version checking.
4016 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
4017 with this defined it will not be affected by any changes to ssl internal
4018 structures. Add several utility functions to allow openssl application
4019 to work with OPENSSL_NO_SSL_INTERN defined.
4022 *) A long standing patch to add support for SRP from EdelWeb (Peter
4023 Sylvester and Christophe Renou) was integrated.
4024 [Christophe Renou <christophe.renou@edelweb.fr>, Peter Sylvester
4025 <peter.sylvester@edelweb.fr>, Tom Wu <tjw@cs.stanford.edu>, and
4028 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
4031 *) Permit abbreviated handshakes when renegotiating using the function
4032 SSL_renegotiate_abbreviated().
4033 [Robin Seggelmann <seggelmann@fh-muenster.de>]
4035 *) Add call to ENGINE_register_all_complete() to
4036 ENGINE_load_builtin_engines(), so some implementations get used
4037 automatically instead of needing explicit application support.
4040 *) Add support for TLS key exporter as described in RFC5705.
4041 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
4043 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
4044 a few changes are required:
4046 Add SSL_OP_NO_TLSv1_1 flag.
4047 Add TLSv1_1 methods.
4048 Update version checking logic to handle version 1.1.
4049 Add explicit IV handling (ported from DTLS code).
4050 Add command line options to s_client/s_server.
4053 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
4055 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
4056 in CMS and PKCS7 code. When RSA decryption fails use a random key for
4057 content decryption and always return the same error. Note: this attack
4058 needs on average 2^20 messages so it only affects automated senders. The
4059 old behaviour can be re-enabled in the CMS code by setting the
4060 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
4061 an MMA defence is not necessary.
4062 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
4063 this issue. (CVE-2012-0884)
4066 *) Fix CVE-2011-4619: make sure we really are receiving a
4067 client hello before rejecting multiple SGC restarts. Thanks to
4068 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
4071 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
4073 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
4074 Thanks to Antonio Martin, Enterprise Secure Access Research and
4075 Development, Cisco Systems, Inc. for discovering this bug and
4076 preparing a fix. (CVE-2012-0050)
4079 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
4081 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
4082 of the Vaudenay padding oracle attack on CBC mode encryption
4083 which enables an efficient plaintext recovery attack against
4084 the OpenSSL implementation of DTLS. Their attack exploits timing
4085 differences arising during decryption processing. A research
4086 paper describing this attack can be found at:
4087 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
4088 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
4089 Security Group at Royal Holloway, University of London
4090 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
4091 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
4092 for preparing the fix. (CVE-2011-4108)
4093 [Robin Seggelmann, Michael Tuexen]
4095 *) Clear bytes used for block padding of SSL 3.0 records.
4097 [Adam Langley (Google)]
4099 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
4100 Kadianakis <desnacked@gmail.com> for discovering this issue and
4101 Adam Langley for preparing the fix. (CVE-2011-4619)
4102 [Adam Langley (Google)]
4104 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
4105 [Andrey Kulikov <amdeich@gmail.com>]
4107 *) Prevent malformed RFC3779 data triggering an assertion failure.
4108 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
4109 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
4110 [Rob Austein <sra@hactrn.net>]
4112 *) Improved PRNG seeding for VOS.
4113 [Paul Green <Paul.Green@stratus.com>]
4115 *) Fix ssl_ciph.c set-up race.
4116 [Adam Langley (Google)]
4118 *) Fix spurious failures in ecdsatest.c.
4119 [Emilia Käsper (Google)]
4121 *) Fix the BIO_f_buffer() implementation (which was mixing different
4122 interpretations of the '..._len' fields).
4123 [Adam Langley (Google)]
4125 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
4126 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
4127 threads won't reuse the same blinding coefficients.
4129 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
4130 lock to call BN_BLINDING_invert_ex, and avoids one use of
4131 BN_BLINDING_update for each BN_BLINDING structure (previously,
4132 the last update always remained unused).
4133 [Emilia Käsper (Google)]
4135 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
4136 [Bob Buckholz (Google)]
4138 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
4140 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
4141 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
4142 [Kaspar Brand <ossl@velox.ch>]
4144 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
4145 for multi-threaded use of ECDH. (CVE-2011-3210)
4146 [Adam Langley (Google)]
4148 *) Fix x509_name_ex_d2i memory leak on bad inputs.
4151 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
4152 signature public key algorithm by using OID xref utilities instead.
4153 Before this you could only use some ECC ciphersuites with SHA1 only.
4156 *) Add protection against ECDSA timing attacks as mentioned in the paper
4157 by Billy Bob Brumley and Nicola Tuveri, see:
4159 http://eprint.iacr.org/2011/232.pdf
4161 [Billy Bob Brumley and Nicola Tuveri]
4163 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
4165 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
4166 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
4168 *) Fix bug in string printing code: if *any* escaping is enabled we must
4169 escape the escape character (backslash) or the resulting string is
4173 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
4175 *) Disable code workaround for ancient and obsolete Netscape browsers
4176 and servers: an attacker can use it in a ciphersuite downgrade attack.
4177 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
4180 *) Fixed J-PAKE implementation error, originally discovered by
4181 Sebastien Martini, further info and confirmation from Stefan
4182 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
4185 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
4187 *) Fix extension code to avoid race conditions which can result in a buffer
4188 overrun vulnerability: resumed sessions must not be modified as they can
4189 be shared by multiple threads. CVE-2010-3864
4192 *) Fix WIN32 build system to correctly link an ENGINE directory into
4196 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
4198 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
4200 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
4202 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
4204 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
4205 context. The operation can be customised via the ctrl mechanism in
4206 case ENGINEs want to include additional functionality.
4209 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
4212 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
4213 output hashes compatible with older versions of OpenSSL.
4214 [Willy Weisz <weisz@vcpc.univie.ac.at>]
4216 *) Fix compression algorithm handling: if resuming a session use the
4217 compression algorithm of the resumed session instead of determining
4218 it from client hello again. Don't allow server to change algorithm.
4221 *) Add load_crls() function to apps tidying load_certs() too. Add option
4222 to verify utility to allow additional CRLs to be included.
4225 *) Update OCSP request code to permit adding custom headers to the request:
4226 some responders need this.
4229 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
4231 [Julia Lawall <julia@diku.dk>]
4233 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
4234 needlessly dereferenced structures, used obsolete functions and
4235 didn't handle all updated verify codes correctly.
4238 *) Disable MD2 in the default configuration.
4241 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
4242 indicate the initial BIO being pushed or popped. This makes it possible
4243 to determine whether the BIO is the one explicitly called or as a result
4244 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
4245 it handles reference counts correctly and doesn't zero out the I/O bio
4246 when it is not being explicitly popped. WARNING: applications which
4247 included workarounds for the old buggy behaviour will need to be modified
4248 or they could free up already freed BIOs.
4251 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
4252 renaming to all platforms (within the 0.9.8 branch, this was
4253 done conditionally on Netware platforms to avoid a name clash).
4254 [Guenter <lists@gknw.net>]
4256 *) Add ECDHE and PSK support to DTLS.
4257 [Michael Tuexen <tuexen@fh-muenster.de>]
4259 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
4263 *) Add "missing" function EVP_MD_flags() (without this the only way to
4264 retrieve a digest flags is by accessing the structure directly. Update
4265 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
4266 or cipher is registered as in the "from" argument. Print out all
4267 registered digests in the dgst usage message instead of manually
4268 attempting to work them out.
4271 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
4272 this allows the use of compression and extensions. Change default cipher
4273 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
4274 by default unless an application cipher string requests it.
4277 *) Alter match criteria in PKCS12_parse(). It used to try to use local
4278 key ids to find matching certificates and keys but some PKCS#12 files
4279 don't follow the (somewhat unwritten) rules and this strategy fails.
4280 Now just gather all certificates together and the first private key
4281 then look for the first certificate that matches the key.
4284 *) Support use of registered digest and cipher names for dgst and cipher
4285 commands instead of having to add each one as a special case. So now
4292 openssl dgst -sha256 foo
4294 and this works for ENGINE based algorithms too.
4298 *) Update Gost ENGINE to support parameter files.
4299 [Victor B. Wagner <vitus@cryptocom.ru>]
4301 *) Support GeneralizedTime in ca utility.
4302 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
4304 *) Enhance the hash format used for certificate directory links. The new
4305 form uses the canonical encoding (meaning equivalent names will work
4306 even if they aren't identical) and uses SHA1 instead of MD5. This form
4307 is incompatible with the older format and as a result c_rehash should
4308 be used to rebuild symbolic links.
4311 *) Make PKCS#8 the default write format for private keys, replacing the
4312 traditional format. This form is standardised, more secure and doesn't
4313 include an implicit MD5 dependency.
4316 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
4317 committed to OpenSSL should pass this lot as a minimum.
4320 *) Add session ticket override functionality for use by EAP-FAST.
4321 [Jouni Malinen <j@w1.fi>]
4323 *) Modify HMAC functions to return a value. Since these can be implemented
4324 in an ENGINE errors can occur.
4327 *) Type-checked OBJ_bsearch_ex.
4330 *) Type-checked OBJ_bsearch. Also some constification necessitated
4331 by type-checking. Still to come: TXT_DB, bsearch(?),
4332 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
4336 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
4337 seconds to a tm structure directly, instead of going through OS
4338 specific date routines. This avoids any issues with OS routines such
4339 as the year 2038 bug. New *_adj() functions for ASN1 time structures
4340 and X509_time_adj_ex() to cover the extended range. The existing
4341 X509_time_adj() is still usable and will no longer have any date issues.
4344 *) Delta CRL support. New use deltas option which will attempt to locate
4345 and search any appropriate delta CRLs available.
4347 This work was sponsored by Google.
4350 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
4351 code and add additional score elements. Validate alternate CRL paths
4352 as part of the CRL checking and indicate a new error "CRL path validation
4353 error" in this case. Applications wanting additional details can use
4354 the verify callback and check the new "parent" field. If this is not
4355 NULL CRL path validation is taking place. Existing applications won't
4356 see this because it requires extended CRL support which is off by
4359 This work was sponsored by Google.
4362 *) Support for freshest CRL extension.
4364 This work was sponsored by Google.
4367 *) Initial indirect CRL support. Currently only supported in the CRLs
4368 passed directly and not via lookup. Process certificate issuer
4369 CRL entry extension and lookup CRL entries by bother issuer name
4370 and serial number. Check and process CRL issuer entry in IDP extension.
4372 This work was sponsored by Google.
4375 *) Add support for distinct certificate and CRL paths. The CRL issuer
4376 certificate is validated separately in this case. Only enabled if
4377 an extended CRL support flag is set: this flag will enable additional
4378 CRL functionality in future.
4380 This work was sponsored by Google.
4383 *) Add support for policy mappings extension.
4385 This work was sponsored by Google.
4388 *) Fixes to pathlength constraint, self issued certificate handling,
4389 policy processing to align with RFC3280 and PKITS tests.
4391 This work was sponsored by Google.
4394 *) Support for name constraints certificate extension. DN, email, DNS
4395 and URI types are currently supported.
4397 This work was sponsored by Google.
4400 *) To cater for systems that provide a pointer-based thread ID rather
4401 than numeric, deprecate the current numeric thread ID mechanism and
4402 replace it with a structure and associated callback type. This
4403 mechanism allows a numeric "hash" to be extracted from a thread ID in
4404 either case, and on platforms where pointers are larger than 'long',
4405 mixing is done to help ensure the numeric 'hash' is usable even if it
4406 can't be guaranteed unique. The default mechanism is to use "&errno"
4407 as a pointer-based thread ID to distinguish between threads.
4409 Applications that want to provide their own thread IDs should now use
4410 CRYPTO_THREADID_set_callback() to register a callback that will call
4411 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
4413 Note that ERR_remove_state() is now deprecated, because it is tied
4414 to the assumption that thread IDs are numeric. ERR_remove_state(0)
4415 to free the current thread's error state should be replaced by
4416 ERR_remove_thread_state(NULL).
4418 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
4419 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
4420 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
4421 application was previously providing a numeric thread callback that
4422 was inappropriate for distinguishing threads, then uniqueness might
4423 have been obtained with &errno that happened immediately in the
4424 intermediate development versions of OpenSSL; this is no longer the
4425 case, the numeric thread callback will now override the automatic use
4427 [Geoff Thorpe, with help from Bodo Moeller]
4429 *) Initial support for different CRL issuing certificates. This covers a
4430 simple case where the self issued certificates in the chain exist and
4431 the real CRL issuer is higher in the existing chain.
4433 This work was sponsored by Google.
4436 *) Removed effectively defunct crypto/store from the build.
4439 *) Revamp of STACK to provide stronger type-checking. Still to come:
4440 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
4441 ASN1_STRING, CONF_VALUE.
4444 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
4445 RAM on SSL connections. This option can save about 34k per idle SSL.
4448 *) Revamp of LHASH to provide stronger type-checking. Still to come:
4449 STACK, TXT_DB, bsearch, qsort.
4452 *) Initial support for Cryptographic Message Syntax (aka CMS) based
4453 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
4454 support for data, signedData, compressedData, digestedData and
4455 encryptedData, envelopedData types included. Scripts to check against
4456 RFC4134 examples draft and interop and consistency checks of many
4457 content types and variants.
4460 *) Add options to enc utility to support use of zlib compression BIO.
4463 *) Extend mk1mf to support importing of options and assembly language
4464 files from Configure script, currently only included in VC-WIN32.
4465 The assembly language rules can now optionally generate the source
4466 files from the associated perl scripts.
4469 *) Implement remaining functionality needed to support GOST ciphersuites.
4470 Interop testing has been performed using CryptoPro implementations.
4471 [Victor B. Wagner <vitus@cryptocom.ru>]
4473 *) s390x assembler pack.
4476 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
4480 *) Implement Opaque PRF Input TLS extension as specified in
4481 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
4482 official specification yet and no extension type assignment by
4483 IANA exists, this extension (for now) will have to be explicitly
4484 enabled when building OpenSSL by providing the extension number
4485 to use. For example, specify an option
4487 -DTLSEXT_TYPE_opaque_prf_input=0x9527
4489 to the "config" or "Configure" script to enable the extension,
4490 assuming extension number 0x9527 (which is a completely arbitrary
4491 and unofficial assignment based on the MD5 hash of the Internet
4492 Draft). Note that by doing so, you potentially lose
4493 interoperability with other TLS implementations since these might
4494 be using the same extension number for other purposes.
4496 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
4497 opaque PRF input value to use in the handshake. This will create
4498 an internal copy of the length-'len' string at 'src', and will
4499 return non-zero for success.
4501 To get more control and flexibility, provide a callback function
4504 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
4505 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
4509 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
4512 Callback function 'cb' will be called in handshakes, and is
4513 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
4514 Argument 'arg' is for application purposes (the value as given to
4515 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
4516 be provided to the callback function). The callback function
4517 has to return non-zero to report success: usually 1 to use opaque
4518 PRF input just if possible, or 2 to enforce use of the opaque PRF
4519 input. In the latter case, the library will abort the handshake
4520 if opaque PRF input is not successfully negotiated.
4522 Arguments 'peerinput' and 'len' given to the callback function
4523 will always be NULL and 0 in the case of a client. A server will
4524 see the client's opaque PRF input through these variables if
4525 available (NULL and 0 otherwise). Note that if the server
4526 provides an opaque PRF input, the length must be the same as the
4527 length of the client's opaque PRF input.
4529 Note that the callback function will only be called when creating
4530 a new session (session resumption can resume whatever was
4531 previously negotiated), and will not be called in SSL 2.0
4532 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
4533 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
4534 for applications that need to enforce opaque PRF input.
4538 *) Update ssl code to support digests other than SHA1+MD5 for handshake
4541 [Victor B. Wagner <vitus@cryptocom.ru>]
4543 *) Add RFC4507 support to OpenSSL. This includes the corrections in
4544 RFC4507bis. The encrypted ticket format is an encrypted encoded
4545 SSL_SESSION structure, that way new session features are automatically
4548 If a client application caches session in an SSL_SESSION structure
4549 support is transparent because tickets are now stored in the encoded
4552 The SSL_CTX structure automatically generates keys for ticket
4553 protection in servers so again support should be possible
4554 with no application modification.
4556 If a client or server wishes to disable RFC4507 support then the option
4557 SSL_OP_NO_TICKET can be set.
4559 Add a TLS extension debugging callback to allow the contents of any client
4560 or server extensions to be examined.
4562 This work was sponsored by Google.
4565 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
4566 OpenSSL should now compile cleanly on gcc 4.2
4567 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
4569 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
4570 support including streaming MAC support: this is required for GOST
4571 ciphersuite support.
4572 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
4574 *) Add option -stream to use PKCS#7 streaming in smime utility. New
4575 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
4576 to output in BER and PEM format.
4579 *) Experimental support for use of HMAC via EVP_PKEY interface. This
4580 allows HMAC to be handled via the EVP_DigestSign*() interface. The
4581 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
4582 ENGINE support for HMAC keys which are unextractable. New -mac and
4583 -macopt options to dgst utility.
4586 *) New option -sigopt to dgst utility. Update dgst to use
4587 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
4588 alternative signing parameters such as X9.31 or PSS in the dgst
4592 *) Change ssl_cipher_apply_rule(), the internal function that does
4593 the work each time a ciphersuite string requests enabling
4594 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
4595 removing ("!foo+bar") a class of ciphersuites: Now it maintains
4596 the order of disabled ciphersuites such that those ciphersuites
4597 that most recently went from enabled to disabled not only stay
4598 in order with respect to each other, but also have higher priority
4599 than other disabled ciphersuites the next time ciphersuites are
4602 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
4603 the same ciphersuites as with "HIGH" alone, but in a specific
4604 order where the PSK ciphersuites come first (since they are the
4605 most recently disabled ciphersuites when "HIGH" is parsed).
4607 Also, change ssl_create_cipher_list() (using this new
4608 functionality) such that between otherwise identical
4609 ciphersuites, ephemeral ECDH is preferred over ephemeral DH in
4613 *) Change ssl_create_cipher_list() so that it automatically
4614 arranges the ciphersuites in reasonable order before starting
4615 to process the rule string. Thus, the definition for "DEFAULT"
4616 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
4617 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
4618 This makes it much easier to arrive at a reasonable default order
4619 in applications for which anonymous ciphers are OK (meaning
4620 that you can't actually use DEFAULT).
4621 [Bodo Moeller; suggested by Victor Duchovni]
4623 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
4624 processing) into multiple integers instead of setting
4625 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
4626 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
4627 (These masks as well as the individual bit definitions are hidden
4628 away into the non-exported interface ssl/ssl_locl.h, so this
4629 change to the definition of the SSL_CIPHER structure shouldn't
4630 affect applications.) This give us more bits for each of these
4631 categories, so there is no longer a need to coagulate AES128 and
4632 AES256 into a single algorithm bit, and to coagulate Camellia128
4633 and Camellia256 into a single algorithm bit, which has led to all
4636 Thus, among other things, the kludge introduced in 0.9.7m and
4637 0.9.8e for masking out AES256 independently of AES128 or masking
4638 out Camellia256 independently of AES256 is not needed here in 0.9.9.
4640 With the change, we also introduce new ciphersuite aliases that
4641 so far were missing: "AES128", "AES256", "CAMELLIA128", and
4645 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
4646 Use the leftmost N bytes of the signature input if the input is
4647 larger than the prime q (with N being the size in bytes of q).
4650 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
4651 it yet and it is largely untested.
4654 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
4657 *) Initial incomplete changes to avoid need for function casts in OpenSSL
4658 some compilers (gcc 4.2 and later) reject their use. Safestack is
4659 reimplemented. Update ASN1 to avoid use of legacy functions.
4662 *) Win32/64 targets are linked with Winsock2.
4665 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
4666 to external functions. This can be used to increase CRL handling
4667 efficiency especially when CRLs are very large by (for example) storing
4668 the CRL revoked certificates in a database.
4671 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
4672 new CRLs added to a directory can be used. New command line option
4673 -verify_return_error to s_client and s_server. This causes real errors
4674 to be returned by the verify callback instead of carrying on no matter
4675 what. This reflects the way a "real world" verify callback would behave.
4678 *) GOST engine, supporting several GOST algorithms and public key formats.
4679 Kindly donated by Cryptocom.
4682 *) Partial support for Issuing Distribution Point CRL extension. CRLs
4683 partitioned by DP are handled but no indirect CRL or reason partitioning
4684 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
4685 selected via a scoring technique which handles IDP and AKID in CRLs.
4688 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
4689 will ultimately be used for all verify operations: this will remove the
4690 X509_STORE dependency on certificate verification and allow alternative
4691 lookup methods. X509_STORE based implementations of these two callbacks.
4694 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
4695 Modify get_crl() to find a valid (unexpired) CRL if possible.
4698 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
4699 this would be called X509_CRL_cmp() but that name is already used by
4700 a function that just compares CRL issuer names. Cache several CRL
4701 extensions in X509_CRL structure and cache CRLDP in X509.
4704 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
4705 this maps equivalent X509_NAME structures into a consistent structure.
4706 Name comparison can then be performed rapidly using memcmp().
4709 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
4713 *) Allow digests to supply their own micalg string for S/MIME type using
4714 the ctrl EVP_MD_CTRL_MICALG.
4717 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
4718 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
4719 ctrl. It can then customise the structure before and/or after signing
4723 *) New function OBJ_add_sigid() to allow application defined signature OIDs
4724 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
4725 to free up any added signature OIDs.
4728 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
4729 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
4730 digest and cipher tables. New options added to openssl utility:
4731 list-message-digest-algorithms and list-cipher-algorithms.
4734 *) Change the array representation of binary polynomials: the list
4735 of degrees of non-zero coefficients is now terminated with -1.
4736 Previously it was terminated with 0, which was also part of the
4737 value; thus, the array representation was not applicable to
4738 polynomials where t^0 has coefficient zero. This change makes
4739 the array representation useful in a more general context.
4742 *) Various modifications and fixes to SSL/TLS cipher string
4743 handling. For ECC, the code now distinguishes between fixed ECDH
4744 with RSA certificates on the one hand and with ECDSA certificates
4745 on the other hand, since these are separate ciphersuites. The
4746 unused code for Fortezza ciphersuites has been removed.
4748 For consistency with EDH, ephemeral ECDH is now called "EECDH"
4749 (not "ECDHE"). For consistency with the code for DH
4750 certificates, use of ECDH certificates is now considered ECDH
4751 authentication, not RSA or ECDSA authentication (the latter is
4752 merely the CA's signing algorithm and not actively used in the
4755 The temporary ciphersuite alias "ECCdraft" is no longer
4756 available, and ECC ciphersuites are no longer excluded from "ALL"
4757 and "DEFAULT". The following aliases now exist for RFC 4492
4758 ciphersuites, most of these by analogy with the DH case:
4760 kECDHr - ECDH cert, signed with RSA
4761 kECDHe - ECDH cert, signed with ECDSA
4762 kECDH - ECDH cert (signed with either RSA or ECDSA)
4763 kEECDH - ephemeral ECDH
4764 ECDH - ECDH cert or ephemeral ECDH
4770 AECDH - anonymous ECDH
4771 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
4775 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
4776 Use correct micalg parameters depending on digest(s) in signed message.
4779 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
4780 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
4783 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
4784 an engine to register a method. Add ENGINE lookups for methods and
4785 functional reference processing.
4788 *) New functions EVP_Digest{Sign,Verify)*. These are enhanced versions of
4789 EVP_{Sign,Verify}* which allow an application to customise the signature
4793 *) New -resign option to smime utility. This adds one or more signers
4794 to an existing PKCS#7 signedData structure. Also -md option to use an
4795 alternative message digest algorithm for signing.
4798 *) Tidy up PKCS#7 routines and add new functions to make it easier to
4799 create PKCS7 structures containing multiple signers. Update smime
4800 application to support multiple signers.
4803 *) New -macalg option to pkcs12 utility to allow setting of an alternative
4807 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
4808 Reorganize PBE internals to lookup from a static table using NIDs,
4809 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
4810 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
4811 PRF which will be automatically used with PBES2.
4814 *) Replace the algorithm specific calls to generate keys in "req" with the
4818 *) Update PKCS#7 enveloped data routines to use new API. This is now
4819 supported by any public key method supporting the encrypt operation. A
4820 ctrl is added to allow the public key algorithm to examine or modify
4821 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
4825 *) Add a ctrl to asn1 method to allow a public key algorithm to express
4826 a default digest type to use. In most cases this will be SHA1 but some
4827 algorithms (such as GOST) need to specify an alternative digest. The
4828 return value indicates how strong the preference is 1 means optional and
4829 2 is mandatory (that is it is the only supported type). Modify
4830 ASN1_item_sign() to accept a NULL digest argument to indicate it should
4831 use the default md. Update openssl utilities to use the default digest
4832 type for signing if it is not explicitly indicated.
4835 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
4836 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
4837 signing method from the key type. This effectively removes the link
4838 between digests and public key types.
4841 *) Add an OID cross reference table and utility functions. Its purpose is to
4842 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
4843 rsaEncryption. This will allow some of the algorithm specific hackery
4844 needed to use the correct OID to be removed.
4847 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
4848 structures for PKCS7_sign(). They are now set up by the relevant public
4852 *) Add provisional EC pkey method with support for ECDSA and ECDH.
4855 *) Add support for key derivation (agreement) in the API, DH method and
4859 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
4860 public and private key formats. As a side effect these add additional
4861 command line functionality not previously available: DSA signatures can be
4862 generated and verified using pkeyutl and DH key support and generation in
4867 [Oliver Tappe <zooey@hirschkaefer.de>]
4869 *) New make target "install_html_docs" installs HTML renditions of the
4871 [Oliver Tappe <zooey@hirschkaefer.de>]
4873 *) New utility "genpkey" this is analogous to "genrsa" etc except it can
4874 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
4875 support key and parameter generation and add initial key generation
4876 functionality for RSA.
4879 *) Add functions for main EVP_PKEY_method operations. The undocumented
4880 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
4881 EVP_PKEY_{encrypt,decrypt}_old.
4884 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
4885 key API, doesn't do much yet.
4888 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
4889 public key algorithms. New option to openssl utility:
4890 "list-public-key-algorithms" to print out info.
4893 *) Implement the Supported Elliptic Curves Extension for
4894 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
4897 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
4898 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
4901 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
4902 utilities such as rsa, dsa, dsaparam etc except they process any key
4906 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
4907 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
4908 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
4912 *) Initial support for pluggable public key ASN1.
4913 De-spaghettify the public key ASN1 handling. Move public and private
4914 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
4915 algorithm specific handling to a single module within the relevant
4916 algorithm directory. Add functions to allow (near) opaque processing
4917 of public and private key structures.
4920 *) Implement the Supported Point Formats Extension for
4921 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
4924 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
4925 for the psk identity [hint] and the psk callback functions to the
4926 SSL_SESSION, SSL and SSL_CTX structure.
4929 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
4933 SSL_CTX_use_psk_identity_hint
4934 SSL_get_psk_identity_hint
4935 SSL_get_psk_identity
4936 SSL_use_psk_identity_hint
4938 [Mika Kousa and Pasi Eronen of Nokia Corporation]
4940 *) Add RFC 3161 compliant time stamp request creation, response generation
4941 and response verification functionality.
4942 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
4944 *) Add initial support for TLS extensions, specifically for the server_name
4945 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
4946 have new members for a host name. The SSL data structure has an
4947 additional member SSL_CTX *initial_ctx so that new sessions can be
4948 stored in that context to allow for session resumption, even after the
4949 SSL has been switched to a new SSL_CTX in reaction to a client's
4950 server_name extension.
4952 New functions (subject to change):
4954 SSL_get_servername()
4955 SSL_get_servername_type()
4958 New CTRL codes and macros (subject to change):
4960 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
4961 - SSL_CTX_set_tlsext_servername_callback()
4962 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
4963 - SSL_CTX_set_tlsext_servername_arg()
4964 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
4966 openssl s_client has a new '-servername ...' option.
4968 openssl s_server has new options '-servername_host ...', '-cert2 ...',
4969 '-key2 ...', '-servername_fatal' (subject to change). This allows
4970 testing the HostName extension for a specific single host name ('-cert'
4971 and '-key' remain fallbacks for handshakes without HostName
4972 negotiation). If the unrecognized_name alert has to be sent, this by
4973 default is a warning; it becomes fatal with the '-servername_fatal'
4976 [Peter Sylvester, Remy Allais, Christophe Renou]
4978 *) Whirlpool hash implementation is added.
4981 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
4982 bn(64,32). Because of instruction set limitations it doesn't have
4983 any negative impact on performance. This was done mostly in order
4984 to make it possible to share assembler modules, such as bn_mul_mont
4985 implementations, between 32- and 64-bit builds without hassle.
4988 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
4989 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
4993 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
4994 dedicated Montgomery multiplication procedure, is introduced.
4995 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
4996 "64-bit" performance on certain 32-bit targets.
4999 *) New option SSL_OP_NO_COMP to disable use of compression selectively
5000 in SSL structures. New SSL ctrl to set maximum send fragment size.
5001 Save memory by setting the I/O buffer sizes dynamically instead of
5002 using the maximum available value.
5005 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
5006 in addition to the text details.
5009 *) Very, very preliminary EXPERIMENTAL support for printing of general
5010 ASN1 structures. This currently produces rather ugly output and doesn't
5011 handle several customised structures at all.
5014 *) Integrated support for PVK file format and some related formats such
5015 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
5016 these in the 'rsa' and 'dsa' utilities.
5019 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
5022 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
5023 place for the (very old) "NETSCAPE" format certificates which are now
5024 handled using new ASN1 code equivalents.
5027 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
5028 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
5029 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
5032 *) Modify CRL distribution points extension code to print out previously
5033 unsupported fields. Enhance extension setting code to allow setting of
5037 *) Add print and set support for Issuing Distribution Point CRL extension.
5040 *) Change 'Configure' script to enable Camellia by default.
5043 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
5045 *) When rejecting SSL/TLS records due to an incorrect version number, never
5046 update s->server with a new major version number. As of
5047 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
5048 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
5049 the previous behavior could result in a read attempt at NULL when
5050 receiving specific incorrect SSL/TLS records once record payload
5051 protection is active. (CVE-2010-0740)
5052 [Bodo Moeller, Adam Langley <agl@chromium.org>]
5054 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
5055 could be crashed if the relevant tables were not present (e.g. chrooted).
5056 [Tomas Hoger <thoger@redhat.com>]
5058 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
5060 *) Always check bn_wexpand() return values for failure. (CVE-2009-3245)
5061 [Martin Olsson, Neel Mehta]
5063 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
5064 accommodate for stack sorting, always a write lock!).
5067 *) On some versions of WIN32 Heap32Next is very slow. This can cause
5068 excessive delays in the RAND_poll(): over a minute. As a workaround
5069 include a time check in the inner Heap32Next loop too.
5072 *) The code that handled flushing of data in SSL/TLS originally used the
5073 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
5074 the problem outlined in PR#1949. The fix suggested there however can
5075 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
5076 of Apache). So instead simplify the code to flush unconditionally.
5077 This should be fine since flushing with no data to flush is a no op.
5080 *) Handle TLS versions 2.0 and later properly and correctly use the
5081 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
5082 off ancient servers have a habit of sticking around for a while...
5085 *) Modify compression code so it frees up structures without using the
5086 ex_data callbacks. This works around a problem where some applications
5087 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
5088 restarting) then use compression (e.g. SSL with compression) later.
5089 This results in significant per-connection memory leaks and
5090 has caused some security issues including CVE-2008-1678 and
5094 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
5095 change when encrypting or decrypting.
5098 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
5099 connect and renegotiate with servers which do not support RI.
5100 Until RI is more widely deployed this option is enabled by default.
5103 *) Add "missing" ssl ctrls to clear options and mode.
5106 *) If client attempts to renegotiate and doesn't support RI respond with
5107 a no_renegotiation alert as required by RFC5746. Some renegotiating
5108 TLS clients will continue a connection gracefully when they receive
5109 the alert. Unfortunately OpenSSL mishandled this alert and would hang
5110 waiting for a server hello which it will never receive. Now we treat a
5111 received no_renegotiation alert as a fatal error. This is because
5112 applications requesting a renegotiation might well expect it to succeed
5113 and would have no code in place to handle the server denying it so the
5114 only safe thing to do is to terminate the connection.
5117 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
5118 peer supports secure renegotiation and 0 otherwise. Print out peer
5119 renegotiation support in s_client/s_server.
5122 *) Replace the highly broken and deprecated SPKAC certification method with
5123 the updated NID creation version. This should correctly handle UTF8.
5126 *) Implement RFC5746. Re-enable renegotiation but require the extension
5127 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
5128 turns out to be a bad idea. It has been replaced by
5129 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
5130 SSL_CTX_set_options(). This is really not recommended unless you
5131 know what you are doing.
5132 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
5134 *) Fixes to stateless session resumption handling. Use initial_ctx when
5135 issuing and attempting to decrypt tickets in case it has changed during
5136 servername handling. Use a non-zero length session ID when attempting
5137 stateless session resumption: this makes it possible to determine if
5138 a resumption has occurred immediately after receiving server hello
5139 (several places in OpenSSL subtly assume this) instead of later in
5143 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
5144 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
5145 fixes for a few places where the return code is not checked
5147 [Julia Lawall <julia@diku.dk>]
5149 *) Add --strict-warnings option to Configure script to include devteam
5150 warnings in other configurations.
5153 *) Add support for --libdir option and LIBDIR variable in makefiles. This
5154 makes it possible to install openssl libraries in locations which
5155 have names other than "lib", for example "/usr/lib64" which some
5157 [Steve Henson, based on patch from Jeremy Utley]
5159 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
5160 X690 8.9.12 and can produce some misleading textual output of OIDs.
5161 [Steve Henson, reported by Dan Kaminsky]
5163 *) Delete MD2 from algorithm tables. This follows the recommendation in
5164 several standards that it is not used in new applications due to
5165 several cryptographic weaknesses. For binary compatibility reasons
5166 the MD2 API is still compiled in by default.
5169 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
5173 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
5174 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
5176 [Guenter <lists@gknw.net>]
5178 *) Fix the server certificate chain building code to use X509_verify_cert(),
5179 it used to have an ad-hoc builder which was unable to cope with anything
5180 other than a simple chain.
5181 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
5183 *) Don't check self signed certificate signatures in X509_verify_cert()
5184 by default (a flag can override this): it just wastes time without
5185 adding any security. As a useful side effect self signed root CAs
5186 with non-FIPS digests are now usable in FIPS mode.
5189 *) In dtls1_process_out_of_seq_message() the check if the current message
5190 is already buffered was missing. For every new message was memory
5191 allocated, allowing an attacker to perform an denial of service attack
5192 with sending out of seq handshake messages until there is no memory
5193 left. Additionally every future message was buffered, even if the
5194 sequence number made no sense and would be part of another handshake.
5195 So only messages with sequence numbers less than 10 in advance will be
5196 buffered. (CVE-2009-1378)
5197 [Robin Seggelmann, discovered by Daniel Mentz]
5199 *) Records are buffered if they arrive with a future epoch to be
5200 processed after finishing the corresponding handshake. There is
5201 currently no limitation to this buffer allowing an attacker to perform
5202 a DOS attack with sending records with future epochs until there is no
5203 memory left. This patch adds the pqueue_size() function to determine
5204 the size of a buffer and limits the record buffer to 100 entries.
5206 [Robin Seggelmann, discovered by Daniel Mentz]
5208 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
5209 parent structure is freed. (CVE-2009-1379)
5212 *) Handle non-blocking I/O properly in SSL_shutdown() call.
5213 [Darryl Miles <darryl-mailinglists@netbauds.net>]
5216 [Ilya O. <vrghost@gmail.com>]
5218 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
5220 *) Disable renegotiation completely - this fixes a severe security
5221 problem (CVE-2009-3555) at the cost of breaking all
5222 renegotiation. Renegotiation can be re-enabled by setting
5223 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
5224 run-time. This is really not recommended unless you know what
5228 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
5230 *) Don't set val to NULL when freeing up structures, it is freed up by
5231 underlying code. If sizeof(void *) > sizeof(long) this can result in
5232 zeroing past the valid field. (CVE-2009-0789)
5233 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
5235 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
5236 checked correctly. This would allow some invalid signed attributes to
5237 appear to verify correctly. (CVE-2009-0591)
5238 [Ivan Nestlerode <inestlerode@us.ibm.com>]
5240 *) Reject UniversalString and BMPString types with invalid lengths. This
5241 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
5242 a legal length. (CVE-2009-0590)
5245 *) Set S/MIME signing as the default purpose rather than setting it
5246 unconditionally. This allows applications to override it at the store
5250 *) Permit restricted recursion of ASN1 strings. This is needed in practice
5251 to handle some structures.
5254 *) Improve efficiency of mem_gets: don't search whole buffer each time
5256 [Jeremy Shapiro <jnshapir@us.ibm.com>]
5258 *) New -hex option for openssl rand.
5261 *) Print out UTF8String and NumericString when parsing ASN1.
5264 *) Support NumericString type for name components.
5267 *) Allow CC in the environment to override the automatically chosen
5268 compiler. Note that nothing is done to ensure flags work with the
5272 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
5274 *) Properly check EVP_VerifyFinal() and similar return values
5276 [Ben Laurie, Bodo Moeller, Google Security Team]
5278 *) Enable TLS extensions by default.
5281 *) Allow the CHIL engine to be loaded, whether the application is
5282 multithreaded or not. (This does not release the developer from the
5283 obligation to set up the dynamic locking callbacks.)
5284 [Sander Temme <sander@temme.net>]
5286 *) Use correct exit code if there is an error in dgst command.
5287 [Steve Henson; problem pointed out by Roland Dirlewanger]
5289 *) Tweak Configure so that you need to say "experimental-jpake" to enable
5290 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
5293 *) Add experimental JPAKE support, including demo authentication in
5294 s_client and s_server.
5297 *) Set the comparison function in v3_addr_canonize().
5298 [Rob Austein <sra@hactrn.net>]
5300 *) Add support for XMPP STARTTLS in s_client.
5301 [Philip Paeps <philip@freebsd.org>]
5303 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
5304 to ensure that even with this option, only ciphersuites in the
5305 server's preference list will be accepted. (Note that the option
5306 applies only when resuming a session, so the earlier behavior was
5307 just about the algorithm choice for symmetric cryptography.)
5310 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
5312 *) Fix NULL pointer dereference if a DTLS server received
5313 ChangeCipherSpec as first record (CVE-2009-1386).
5316 *) Fix a state transition in s3_srvr.c and d1_srvr.c
5317 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
5320 *) The fix in 0.9.8c that supposedly got rid of unsafe
5321 double-checked locking was incomplete for RSA blinding,
5322 addressing just one layer of what turns out to have been
5323 doubly unsafe triple-checked locking.
5325 So now fix this for real by retiring the MONT_HELPER macro
5326 in crypto/rsa/rsa_eay.c.
5328 [Bodo Moeller; problem pointed out by Marius Schilder]
5330 *) Various precautionary measures:
5332 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
5334 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
5335 (NB: This would require knowledge of the secret session ticket key
5336 to exploit, in which case you'd be SOL either way.)
5338 - Change bn_nist.c so that it will properly handle input BIGNUMs
5339 outside the expected range.
5341 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
5344 [Neel Mehta, Bodo Moeller]
5346 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
5347 the load fails. Useful for distros.
5348 [Ben Laurie and the FreeBSD team]
5350 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
5353 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
5356 *) Expand ENGINE to support engine supplied SSL client certificate functions.
5358 This work was sponsored by Logica.
5361 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
5362 keystores. Support for SSL/TLS client authentication too.
5363 Not compiled unless enable-capieng specified to Configure.
5365 This work was sponsored by Logica.
5368 *) Fix bug in X509_ATTRIBUTE creation: don't set attribute using
5369 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
5370 attribute creation routines such as certificate requests and PKCS#12
5374 Changes between 0.9.8g and 0.9.8h [28 May 2008]
5376 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
5377 handshake which could lead to a client crash as found using the
5378 Codenomicon TLS test suite (CVE-2008-1672)
5379 [Steve Henson, Mark Cox]
5381 *) Fix double free in TLS server name extensions which could lead to
5382 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
5385 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
5387 Clear the error queue to ensure that error entries left from
5388 older function calls do not interfere with the correct operation.
5389 [Lutz Jaenicke, Erik de Castro Lopo]
5391 *) Remove root CA certificates of commercial CAs:
5393 The OpenSSL project does not recommend any specific CA and does not
5394 have any policy with respect to including or excluding any CA.
5395 Therefore it does not make any sense to ship an arbitrary selection
5396 of root CA certificates with the OpenSSL software.
5399 *) RSA OAEP patches to fix two separate invalid memory reads.
5400 The first one involves inputs when 'lzero' is greater than
5401 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
5402 before the beginning of from). The second one involves inputs where
5403 the 'db' section contains nothing but zeroes (there is a one-byte
5404 invalid read after the end of 'db').
5405 [Ivan Nestlerode <inestlerode@us.ibm.com>]
5407 *) Partial backport from 0.9.9-dev:
5409 Introduce bn_mul_mont (dedicated Montgomery multiplication
5410 procedure) as a candidate for BIGNUM assembler implementation.
5411 While 0.9.9-dev uses assembler for various architectures, only
5412 x86_64 is available by default here in the 0.9.8 branch, and
5413 32-bit x86 is available through a compile-time setting.
5415 To try the 32-bit x86 assembler implementation, use Configure
5416 option "enable-montasm" (which exists only for this backport).
5418 As "enable-montasm" for 32-bit x86 disclaims code stability
5419 anyway, in this constellation we activate additional code
5420 backported from 0.9.9-dev for further performance improvements,
5421 namely BN_from_montgomery_word. (To enable this otherwise,
5422 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
5424 [Andy Polyakov (backport partially by Bodo Moeller)]
5426 *) Add TLS session ticket callback. This allows an application to set
5427 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
5428 values. This is useful for key rollover for example where several key
5429 sets may exist with different names.
5432 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
5433 This was broken until now in 0.9.8 releases, such that the only way
5434 a registered ENGINE could be used (assuming it initialises
5435 successfully on the host) was to explicitly set it as the default
5436 for the relevant algorithms. This is in contradiction with 0.9.7
5437 behaviour and the documentation. With this fix, when an ENGINE is
5438 registered into a given algorithm's table of implementations, the
5439 'uptodate' flag is reset so that auto-discovery will be used next
5440 time a new context for that algorithm attempts to select an
5442 [Ian Lister (tweaked by Geoff Thorpe)]
5444 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
5445 implementation in the following ways:
5447 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
5450 Lack of BER streaming support means one pass streaming processing is
5451 only supported if data is detached: setting the streaming flag is
5452 ignored for embedded content.
5454 CMS support is disabled by default and must be explicitly enabled
5455 with the enable-cms configuration option.
5458 *) Update the GMP engine glue to do direct copies between BIGNUM and
5459 mpz_t when openssl and GMP use the same limb size. Otherwise the
5460 existing "conversion via a text string export" trick is still used.
5461 [Paul Sheer <paulsheer@gmail.com>]
5463 *) Zlib compression BIO. This is a filter BIO which compressed and
5464 uncompresses any data passed through it.
5467 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
5468 RFC3394 compatible AES key wrapping.
5471 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
5472 sets string data without copying. X509_ALGOR_set0() and
5473 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
5474 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
5475 from an X509_ATTRIBUTE structure optionally checking it occurs only
5476 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
5480 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
5481 to get the expected BN_FLG_CONSTTIME behavior.
5482 [Bodo Moeller (Google)]
5486 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
5487 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
5488 - added some more tests to do_tests.pl
5489 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
5490 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
5491 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
5492 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
5493 - various changes to netware.pl to enable gcc-cross builds on Win32
5495 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
5496 - various changes to fix missing prototype warnings
5497 - fixed x86nasm.pl to create correct asm files for NASM COFF output
5498 - added AES, WHIRLPOOL and CPUID assembler code to build files
5499 - added missing AES assembler make rules to mk1mf.pl
5500 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
5501 [Guenter Knauf <eflash@gmx.net>]
5503 *) Implement certificate status request TLS extension defined in RFC3546.
5504 A client can set the appropriate parameters and receive the encoded
5505 OCSP response via a callback. A server can query the supplied parameters
5506 and set the encoded OCSP response in the callback. Add simplified examples
5507 to s_client and s_server.
5510 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
5512 *) Fix various bugs:
5513 + Binary incompatibility of ssl_ctx_st structure
5514 + DTLS interoperation with non-compliant servers
5515 + Don't call get_session_cb() without proposed session
5516 + Fix ia64 assembler code
5517 [Andy Polyakov, Steve Henson]
5519 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
5521 *) DTLS Handshake overhaul. There were longstanding issues with
5522 OpenSSL DTLS implementation, which were making it impossible for
5523 RFC 4347 compliant client to communicate with OpenSSL server.
5524 Unfortunately just fixing these incompatibilities would "cut off"
5525 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
5526 server keeps tolerating non RFC compliant syntax. The opposite is
5527 not true, 0.9.8f client can not communicate with earlier server.
5528 This update even addresses CVE-2007-4995.
5531 *) Changes to avoid need for function casts in OpenSSL: some compilers
5532 (gcc 4.2 and later) reject their use.
5533 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
5536 *) Add RFC4507 support to OpenSSL. This includes the corrections in
5537 RFC4507bis. The encrypted ticket format is an encrypted encoded
5538 SSL_SESSION structure, that way new session features are automatically
5541 If a client application caches session in an SSL_SESSION structure
5542 support is transparent because tickets are now stored in the encoded
5545 The SSL_CTX structure automatically generates keys for ticket
5546 protection in servers so again support should be possible
5547 with no application modification.
5549 If a client or server wishes to disable RFC4507 support then the option
5550 SSL_OP_NO_TICKET can be set.
5552 Add a TLS extension debugging callback to allow the contents of any client
5553 or server extensions to be examined.
5555 This work was sponsored by Google.
5558 *) Add initial support for TLS extensions, specifically for the server_name
5559 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
5560 have new members for a host name. The SSL data structure has an
5561 additional member SSL_CTX *initial_ctx so that new sessions can be
5562 stored in that context to allow for session resumption, even after the
5563 SSL has been switched to a new SSL_CTX in reaction to a client's
5564 server_name extension.
5566 New functions (subject to change):
5568 SSL_get_servername()
5569 SSL_get_servername_type()
5572 New CTRL codes and macros (subject to change):
5574 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
5575 - SSL_CTX_set_tlsext_servername_callback()
5576 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
5577 - SSL_CTX_set_tlsext_servername_arg()
5578 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
5580 openssl s_client has a new '-servername ...' option.
5582 openssl s_server has new options '-servername_host ...', '-cert2 ...',
5583 '-key2 ...', '-servername_fatal' (subject to change). This allows
5584 testing the HostName extension for a specific single host name ('-cert'
5585 and '-key' remain fallbacks for handshakes without HostName
5586 negotiation). If the unrecognized_name alert has to be sent, this by
5587 default is a warning; it becomes fatal with the '-servername_fatal'
5590 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
5592 *) Add AES and SSE2 assembly language support to VC++ build.
5595 *) Mitigate attack on final subtraction in Montgomery reduction.
5598 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
5599 (which previously caused an internal error).
5602 *) Squeeze another 10% out of IGE mode when in != out.
5605 *) AES IGE mode speedup.
5606 [Dean Gaudet (Google)]
5608 *) Add the Korean symmetric 128-bit cipher SEED (see
5609 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
5610 add SEED ciphersuites from RFC 4162:
5612 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
5613 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
5614 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
5615 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
5617 To minimize changes between patchlevels in the OpenSSL 0.9.8
5618 series, SEED remains excluded from compilation unless OpenSSL
5619 is configured with 'enable-seed'.
5620 [KISA, Bodo Moeller]
5622 *) Mitigate branch prediction attacks, which can be practical if a
5623 single processor is shared, allowing a spy process to extract
5624 information. For detailed background information, see
5625 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
5626 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
5627 and Necessary Software Countermeasures"). The core of the change
5628 are new versions BN_div_no_branch() and
5629 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
5630 respectively, which are slower, but avoid the security-relevant
5631 conditional branches. These are automatically called by BN_div()
5632 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
5633 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
5634 remove a conditional branch.
5636 BN_FLG_CONSTTIME is the new name for the previous
5637 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
5638 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
5639 in the exponent causes BN_mod_exp_mont() to use the alternative
5640 implementation in BN_mod_exp_mont_consttime().) The old name
5641 remains as a deprecated alias.
5643 Similarly, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
5644 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
5645 constant-time implementations for more than just exponentiation.
5646 Here too the old name is kept as a deprecated alias.
5648 BN_BLINDING_new() will now use BN_dup() for the modulus so that
5649 the BN_BLINDING structure gets an independent copy of the
5650 modulus. This means that the previous "BIGNUM *m" argument to
5651 BN_BLINDING_new() and to BN_BLINDING_create_param() now
5652 essentially becomes "const BIGNUM *m", although we can't actually
5653 change this in the header file before 0.9.9. It allows
5654 RSA_setup_blinding() to use BN_with_flags() on the modulus to
5655 enable BN_FLG_CONSTTIME.
5657 [Matthew D Wood (Intel Corp)]
5659 *) In the SSL/TLS server implementation, be strict about session ID
5660 context matching (which matters if an application uses a single
5661 external cache for different purposes). Previously,
5662 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
5663 set. This did ensure strict client verification, but meant that,
5664 with applications using a single external cache for quite
5665 different requirements, clients could circumvent ciphersuite
5666 restrictions for a given session ID context by starting a session
5667 in a different context.
5670 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
5671 a ciphersuite string such as "DEFAULT:RSA" cannot enable
5672 authentication-only ciphersuites.
5675 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
5676 not complete and could lead to a possible single byte overflow
5677 (CVE-2007-5135) [Ben Laurie]
5679 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
5681 *) Since AES128 and AES256 (and similarly Camellia128 and
5682 Camellia256) share a single mask bit in the logic of
5683 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
5684 kludge to work properly if AES128 is available and AES256 isn't
5685 (or if Camellia128 is available and Camellia256 isn't).
5688 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
5689 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
5690 When a point or a seed is encoded in a BIT STRING, we need to
5691 prevent the removal of trailing zero bits to get the proper DER
5692 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
5693 of a NamedBitList, for which trailing 0 bits need to be removed.)
5696 *) Have SSL/TLS server implementation tolerate "mismatched" record
5697 protocol version while receiving ClientHello even if the
5698 ClientHello is fragmented. (The server can't insist on the
5699 particular protocol version it has chosen before the ServerHello
5700 message has informed the client about his choice.)
5703 *) Add RFC 3779 support.
5704 [Rob Austein for ARIN, Ben Laurie]
5706 *) Load error codes if they are not already present instead of using a
5707 static variable. This allows them to be cleanly unloaded and reloaded.
5708 Improve header file function name parsing.
5711 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
5712 or CAPABILITY handshake as required by RFCs.
5715 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
5717 *) Introduce limits to prevent malicious keys being able to
5718 cause a denial of service. (CVE-2006-2940)
5719 [Steve Henson, Bodo Moeller]
5721 *) Fix ASN.1 parsing of certain invalid structures that can result
5722 in a denial of service. (CVE-2006-2937) [Steve Henson]
5724 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
5725 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
5727 *) Fix SSL client code which could crash if connecting to a
5728 malicious SSLv2 server. (CVE-2006-4343)
5729 [Tavis Ormandy and Will Drewry, Google Security Team]
5731 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
5732 match only those. Before that, "AES256-SHA" would be interpreted
5733 as a pattern and match "AES128-SHA" too (since AES128-SHA got
5734 the same strength classification in 0.9.7h) as we currently only
5735 have a single AES bit in the ciphersuite description bitmap.
5736 That change, however, also applied to ciphersuite strings such as
5737 "RC4-MD5" that intentionally matched multiple ciphersuites --
5738 namely, SSL 2.0 ciphersuites in addition to the more common ones
5739 from SSL 3.0/TLS 1.0.
5741 So we change the selection algorithm again: Naming an explicit
5742 ciphersuite selects this one ciphersuite, and any other similar
5743 ciphersuite (same bitmap) from *other* protocol versions.
5744 Thus, "RC4-MD5" again will properly select both the SSL 2.0
5745 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
5747 Since SSL 2.0 does not have any ciphersuites for which the
5748 128/256 bit distinction would be relevant, this works for now.
5749 The proper fix will be to use different bits for AES128 and
5750 AES256, which would have avoided the problems from the beginning;
5751 however, bits are scarce, so we can only do this in a new release
5752 (not just a patchlevel) when we can change the SSL_CIPHER
5753 definition to split the single 'unsigned long mask' bitmap into
5754 multiple values to extend the available space.
5758 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
5760 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
5761 (CVE-2006-4339) [Ben Laurie and Google Security Team]
5763 *) Add AES IGE and biIGE modes.
5766 *) Change the Unix randomness entropy gathering to use poll() when
5767 possible instead of select(), since the latter has some
5768 undesirable limitations.
5769 [Darryl Miles via Richard Levitte and Bodo Moeller]
5771 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
5772 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
5773 cannot be implicitly activated as part of, e.g., the "AES" alias.
5774 However, please upgrade to OpenSSL 0.9.9[-dev] for
5775 non-experimental use of the ECC ciphersuites to get TLS extension
5776 support, which is required for curve and point format negotiation
5777 to avoid potential handshake problems.
5780 *) Disable rogue ciphersuites:
5782 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
5783 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
5784 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
5786 The latter two were purportedly from
5787 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
5790 Also deactivate the remaining ciphersuites from
5791 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
5792 unofficial, and the ID has long expired.
5795 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
5796 dual-core machines) and other potential thread-safety issues.
5799 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
5800 versions), which is now available for royalty-free use
5801 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
5802 Also, add Camellia TLS ciphersuites from RFC 4132.
5804 To minimize changes between patchlevels in the OpenSSL 0.9.8
5805 series, Camellia remains excluded from compilation unless OpenSSL
5806 is configured with 'enable-camellia'.
5809 *) Disable the padding bug check when compression is in use. The padding
5810 bug check assumes the first packet is of even length, this is not
5811 necessarily true if compression is enabled and can result in false
5812 positives causing handshake failure. The actual bug test is ancient
5813 code so it is hoped that implementations will either have fixed it by
5814 now or any which still have the bug do not support compression.
5817 Changes between 0.9.8a and 0.9.8b [04 May 2006]
5819 *) When applying a cipher rule check to see if string match is an explicit
5820 cipher suite and only match that one cipher suite if it is.
5823 *) Link in manifests for VC++ if needed.
5824 [Austin Ziegler <halostatue@gmail.com>]
5826 *) Update support for ECC-based TLS ciphersuites according to
5827 draft-ietf-tls-ecc-12.txt with proposed changes (but without
5828 TLS extensions, which are supported starting with the 0.9.9
5829 branch, not in the OpenSSL 0.9.8 branch).
5832 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
5833 opaque EVP_CIPHER_CTX handling.
5836 *) Fixes and enhancements to zlib compression code. We now only use
5837 "zlib1.dll" and use the default __cdecl calling convention on Win32
5838 to conform with the standards mentioned here:
5839 http://www.zlib.net/DLL_FAQ.txt
5840 Static zlib linking now works on Windows and the new --with-zlib-include
5841 --with-zlib-lib options to Configure can be used to supply the location
5842 of the headers and library. Gracefully handle case where zlib library
5846 *) Several fixes and enhancements to the OID generation code. The old code
5847 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
5848 handle numbers larger than ULONG_MAX, truncated printing and had a
5849 non standard OBJ_obj2txt() behaviour.
5852 *) Add support for building of engines under engine/ as shared libraries
5853 under VC++ build system.
5856 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
5857 Hopefully, we will not see any false combination of paths any more.
5860 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
5862 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
5863 (part of SSL_OP_ALL). This option used to disable the
5864 countermeasure against man-in-the-middle protocol-version
5865 rollback in the SSL 2.0 server implementation, which is a bad
5866 idea. (CVE-2005-2969)
5868 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
5869 for Information Security, National Institute of Advanced Industrial
5870 Science and Technology [AIST], Japan)]
5872 *) Add two function to clear and return the verify parameter flags.
5875 *) Keep cipherlists sorted in the source instead of sorting them at
5876 runtime, thus removing the need for a lock.
5879 *) Avoid some small subgroup attacks in Diffie-Hellman.
5880 [Nick Mathewson and Ben Laurie]
5882 *) Add functions for well-known primes.
5885 *) Extended Windows CE support.
5886 [Satoshi Nakamura and Andy Polyakov]
5888 *) Initialize SSL_METHOD structures at compile time instead of during
5889 runtime, thus removing the need for a lock.
5892 *) Make PKCS7_decrypt() work even if no certificate is supplied by
5893 attempting to decrypt each encrypted key in turn. Add support to
5897 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
5899 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
5902 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
5905 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
5906 key into the same file any more.
5909 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
5912 *) Add -utf8 command line and config file option to 'ca'.
5913 [Stefan <stf@udoma.org]
5915 *) Removed the macro des_crypt(), as it seems to conflict with some
5916 libraries. Use DES_crypt().
5919 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
5920 involves renaming the source and generated shared-libs for
5921 both. The engines will accept the corrected or legacy ids
5922 ('ncipher' and '4758_cca' respectively) when binding. NB,
5923 this only applies when building 'shared'.
5924 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
5926 *) Add attribute functions to EVP_PKEY structure. Modify
5927 PKCS12_create() to recognize a CSP name attribute and
5928 use it. Make -CSP option work again in pkcs12 utility.
5931 *) Add new functionality to the bn blinding code:
5932 - automatic re-creation of the BN_BLINDING parameters after
5933 a fixed number of uses (currently 32)
5934 - add new function for parameter creation
5935 - introduce flags to control the update behaviour of the
5936 BN_BLINDING parameters
5937 - hide BN_BLINDING structure
5938 Add a second BN_BLINDING slot to the RSA structure to improve
5939 performance when a single RSA object is shared among several
5943 *) Add support for DTLS.
5944 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
5946 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
5947 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
5950 *) Remove buggy and incomplete DH cert support from
5951 ssl/ssl_rsa.c and ssl/s3_both.c
5954 *) Use SHA-1 instead of MD5 as the default digest algorithm for
5955 the apps/openssl applications.
5958 *) Compile clean with "-Wall -Wmissing-prototypes
5959 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
5960 DEBUG_SAFESTACK must also be set.
5963 *) Change ./Configure so that certain algorithms can be disabled by default.
5964 The new counterpiece to "no-xxx" is "enable-xxx".
5966 The patented RC5 and MDC2 algorithms will now be disabled unless
5967 "enable-rc5" and "enable-mdc2", respectively, are specified.
5969 (IDEA remains enabled despite being patented. This is because IDEA
5970 is frequently required for interoperability, and there is no license
5971 fee for non-commercial use. As before, "no-idea" can be used to
5972 avoid this algorithm.)
5976 *) Add processing of proxy certificates (see RFC 3820). This work was
5977 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
5978 EGEE (Enabling Grids for E-science in Europe).
5981 *) RC4 performance overhaul on modern architectures/implementations, such
5982 as Intel P4, IA-64 and AMD64.
5985 *) New utility extract-section.pl. This can be used specify an alternative
5986 section number in a pod file instead of having to treat each file as
5987 a separate case in Makefile. This can be done by adding two lines to the
5990 =for comment openssl_section:XXX
5992 The blank line is mandatory.
5996 *) New arguments -certform, -keyform and -pass for s_client and s_server
5997 to allow alternative format key and certificate files and passphrase
6001 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
6002 update associated structures and add various utility functions.
6004 Add new policy related verify parameters, include policy checking in
6005 standard verify code. Enhance 'smime' application with extra parameters
6006 to support policy checking and print out.
6009 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
6010 Nehemiah processors. These extensions support AES encryption in hardware
6011 as well as RNG (though RNG support is currently disabled).
6012 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
6014 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
6017 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
6018 [Andy Polyakov and a number of other people]
6020 *) Improved PowerPC platform support. Most notably BIGNUM assembler
6021 implementation contributed by IBM.
6022 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
6024 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
6025 exponent rather than 'unsigned long'. There is a corresponding change to
6026 the new 'rsa_keygen' element of the RSA_METHOD structure.
6027 [Jelte Jansen, Geoff Thorpe]
6029 *) Functionality for creating the initial serial number file is now
6030 moved from CA.pl to the 'ca' utility with a new option -create_serial.
6032 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
6033 number file to 1, which is bound to cause problems. To avoid
6034 the problems while respecting compatibility between different 0.9.7
6035 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
6036 CA.pl for serial number initialization. With the new release 0.9.8,
6037 we can fix the problem directly in the 'ca' utility.)
6040 *) Reduced header interdependencies by declaring more opaque objects in
6041 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
6042 give fewer recursive includes, which could break lazy source code - so
6043 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
6044 developers should define this symbol when building and using openssl to
6045 ensure they track the recommended behaviour, interfaces, [etc], but
6046 backwards-compatible behaviour prevails when this isn't defined.
6049 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
6052 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
6053 This will generate a random key of the appropriate length based on the
6054 cipher context. The EVP_CIPHER can provide its own random key generation
6055 routine to support keys of a specific form. This is used in the des and
6056 3des routines to generate a key of the correct parity. Update S/MIME
6057 code to use new functions and hence generate correct parity DES keys.
6058 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
6059 valid (weak or incorrect parity).
6062 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
6063 as looking them up. This is useful when the verified structure may contain
6064 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
6065 present unless the new PKCS7_NO_CRL flag is asserted.
6068 *) Extend ASN1 oid configuration module. It now additionally accepts the
6071 shortName = some long name, 1.2.3.4
6074 *) Reimplemented the BN_CTX implementation. There is now no more static
6075 limitation on the number of variables it can handle nor the depth of the
6076 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
6077 information can now expand as required, and rather than having a single
6078 static array of bignums, BN_CTX now uses a linked-list of such arrays
6079 allowing it to expand on demand whilst maintaining the usefulness of
6080 BN_CTX's "bundling".
6083 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
6084 to allow all RSA operations to function using a single BN_CTX.
6087 *) Preliminary support for certificate policy evaluation and checking. This
6088 is initially intended to pass the tests outlined in "Conformance Testing
6089 of Relying Party Client Certificate Path Processing Logic" v1.07.
6092 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
6093 remained unused and not that useful. A variety of other little bignum
6094 tweaks and fixes have also been made continuing on from the audit (see
6098 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
6099 associated ASN1, EVP and SSL functions and old ASN1 macros.
6102 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
6103 and this should never fail. So the return value from the use of
6104 BN_set_word() (which can fail due to needless expansion) is now deprecated;
6105 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
6108 *) BN_CTX_get() should return zero-valued bignums, providing the same
6109 initialised value as BN_new().
6110 [Geoff Thorpe, suggested by Ulf Möller]
6112 *) Support for inhibitAnyPolicy certificate extension.
6115 *) An audit of the BIGNUM code is underway, for which debugging code is
6116 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
6117 is considered valid when processing BIGNUMs, and causes execution to
6118 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
6119 further steps are taken to deliberately pollute unused data in BIGNUM
6120 structures to try and expose faulty code further on. For now, openssl will
6121 (in its default mode of operation) continue to tolerate the inconsistent
6122 forms that it has tolerated in the past, but authors and packagers should
6123 consider trying openssl and their own applications when compiled with
6124 these debugging symbols defined. It will help highlight potential bugs in
6125 their own code, and will improve the test coverage for OpenSSL itself. At
6126 some point, these tighter rules will become openssl's default to improve
6127 maintainability, though the assert()s and other overheads will remain only
6128 in debugging configurations. See bn.h for more details.
6129 [Geoff Thorpe, Nils Larsch, Ulf Möller]
6131 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
6132 that can only be obtained through BN_CTX_new() (which implicitly
6133 initialises it). The presence of this function only made it possible
6134 to overwrite an existing structure (and cause memory leaks).
6137 *) Because of the callback-based approach for implementing LHASH as a
6138 template type, lh_insert() adds opaque objects to hash-tables and
6139 lh_doall() or lh_doall_arg() are typically used with a destructor callback
6140 to clean up those corresponding objects before destroying the hash table
6141 (and losing the object pointers). So some over-zealous constifications in
6142 LHASH have been relaxed so that lh_insert() does not take (nor store) the
6143 objects as "const" and the lh_doall[_arg] callback wrappers are not
6144 prototyped to have "const" restrictions on the object pointers they are
6145 given (and so aren't required to cast them away any more).
6148 *) The tmdiff.h API was so ugly and minimal that our own timing utility
6149 (speed) prefers to use its own implementation. The two implementations
6150 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
6151 its object type properly exposed (MS_TM) instead of casting to/from "char
6152 *". This may still change yet if someone realises MS_TM and "ms_time_***"
6153 aren't necessarily the greatest nomenclatures - but this is what was used
6154 internally to the implementation so I've used that for now.
6157 *) Ensure that deprecated functions do not get compiled when
6158 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
6159 the self-tests were still using deprecated key-generation functions so
6160 these have been updated also.
6163 *) Reorganise PKCS#7 code to separate the digest location functionality
6164 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
6165 New function PKCS7_set_digest() to set the digest type for PKCS#7
6166 digestedData type. Add additional code to correctly generate the
6167 digestedData type and add support for this type in PKCS7 initialization
6171 *) New function PKCS7_set0_type_other() this initializes a PKCS7
6172 structure of type "other".
6175 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
6176 sure the loop does correctly stop and breaking ("division by zero")
6177 modulus operations are not performed. The (pre-generated) prime
6178 table crypto/bn/bn_prime.h was already correct, but it could not be
6179 re-generated on some platforms because of the "division by zero"
6180 situation in the script.
6181 [Ralf S. Engelschall]
6183 *) Update support for ECC-based TLS ciphersuites according to
6184 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
6185 SHA-1 now is only used for "small" curves (where the
6186 representation of a field element takes up to 24 bytes); for
6187 larger curves, the field element resulting from ECDH is directly
6188 used as premaster secret.
6189 [Douglas Stebila (Sun Microsystems Laboratories)]
6191 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
6192 curve secp160r1 to the tests.
6193 [Douglas Stebila (Sun Microsystems Laboratories)]
6195 *) Add the possibility to load symbols globally with DSO.
6196 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
6198 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
6199 control of the error stack.
6202 *) Add support for STORE in ENGINE.
6205 *) Add the STORE type. The intention is to provide a common interface
6206 to certificate and key stores, be they simple file-based stores, or
6207 HSM-type store, or LDAP stores, or...
6208 NOTE: The code is currently UNTESTED and isn't really used anywhere.
6211 *) Add a generic structure called OPENSSL_ITEM. This can be used to
6212 pass a list of arguments to any function as well as provide a way
6213 for a function to pass data back to the caller.
6216 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
6217 works like BUF_strdup() but can be used to duplicate a portion of
6218 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
6222 *) Add the function sk_find_ex() which works like sk_find(), but will
6223 return an index to an element even if an exact match couldn't be
6224 found. The index is guaranteed to point at the element where the
6225 searched-for key would be inserted to preserve sorting order.
6228 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
6229 takes an extra flags argument for optional functionality. Currently,
6230 the following flags are defined:
6232 OBJ_BSEARCH_VALUE_ON_NOMATCH
6233 This one gets OBJ_bsearch_ex() to return a pointer to the first
6234 element where the comparing function returns a negative or zero
6237 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
6238 This one gets OBJ_bsearch_ex() to return a pointer to the first
6239 element where the comparing function returns zero. This is useful
6240 if there are more than one element where the comparing function
6244 *) Make it possible to create self-signed certificates with 'openssl ca'
6245 in such a way that the self-signed certificate becomes part of the
6246 CA database and uses the same mechanisms for serial number generation
6247 as all other certificate signing. The new flag '-selfsign' enables
6248 this functionality. Adapt CA.sh and CA.pl.in.
6251 *) Add functionality to check the public key of a certificate request
6252 against a given private. This is useful to check that a certificate
6253 request can be signed by that key (self-signing).
6256 *) Make it possible to have multiple active certificates with the same
6257 subject in the CA index file. This is done only if the keyword
6258 'unique_subject' is set to 'no' in the main CA section (default
6259 if 'CA_default') of the configuration file. The value is saved
6260 with the database itself in a separate index attribute file,
6261 named like the index file with '.attr' appended to the name.
6264 *) Generate multi-valued AVAs using '+' notation in config files for
6268 *) Support for nameConstraints certificate extension.
6271 *) Support for policyConstraints certificate extension.
6274 *) Support for policyMappings certificate extension.
6277 *) Make sure the default DSA_METHOD implementation only uses its
6278 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
6279 and change its own handlers to be NULL so as to remove unnecessary
6280 indirection. This lets alternative implementations fallback to the
6281 default implementation more easily.
6284 *) Support for directoryName in GeneralName related extensions
6288 *) Make it possible to link applications using Makefile.shared.
6289 Make that possible even when linking against static libraries!
6292 *) Support for single pass processing for S/MIME signing. This now
6293 means that S/MIME signing can be done from a pipe, in addition
6294 cleartext signing (multipart/signed type) is effectively streaming
6295 and the signed data does not need to be all held in memory.
6297 This is done with a new flag PKCS7_STREAM. When this flag is set
6298 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
6299 is done after the data is output (and digests calculated) in
6300 SMIME_write_PKCS7().
6303 *) Add full support for -rpath/-R, both in shared libraries and
6304 applications, at least on the platforms where it's known how
6308 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
6309 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
6310 will now compute a table of multiples of the generator that
6311 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
6312 faster (notably in the case of a single point multiplication,
6313 scalar * generator).
6314 [Nils Larsch, Bodo Moeller]
6316 *) IPv6 support for certificate extensions. The various extensions
6317 which use the IP:a.b.c.d can now take IPv6 addresses using the
6318 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
6322 *) Added an ENGINE that implements RSA by performing private key
6323 exponentiations with the GMP library. The conversions to and from
6324 GMP's mpz_t format aren't optimised nor are any montgomery forms
6325 cached, and on x86 it appears OpenSSL's own performance has caught up.
6326 However there are likely to be other architectures where GMP could
6327 provide a boost. This ENGINE is not built in by default, but it can be
6328 specified at Configure time and should be accompanied by the necessary
6329 linker additions, eg;
6330 ./config -DOPENSSL_USE_GMP -lgmp
6333 *) "openssl engine" will not display ENGINE/DSO load failure errors when
6334 testing availability of engines with "-t" - the old behaviour is
6335 produced by increasing the feature's verbosity with "-tt".
6338 *) ECDSA routines: under certain error conditions uninitialized BN objects
6339 could be freed. Solution: make sure initialization is performed early
6340 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
6344 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
6345 and DH_METHOD (eg. by ENGINE implementations) to override the normal
6346 software implementations. For DSA and DH, parameter generation can
6347 also be overridden by providing the appropriate method callbacks.
6350 *) Change the "progress" mechanism used in key-generation and
6351 primality testing to functions that take a new BN_GENCB pointer in
6352 place of callback/argument pairs. The new API functions have "_ex"
6353 postfixes and the older functions are reimplemented as wrappers for
6354 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
6355 declarations of the old functions to help (graceful) attempts to
6356 migrate to the new functions. Also, the new key-generation API
6357 functions operate on a caller-supplied key-structure and return
6358 success/failure rather than returning a key or NULL - this is to
6359 help make "keygen" another member function of RSA_METHOD etc.
6361 Example for using the new callback interface:
6363 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
6367 BN_GENCB_set(&my_cb, my_callback, my_arg);
6369 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
6370 /* For the meaning of a, b in calls to my_callback(), see the
6371 * documentation of the function that calls the callback.
6372 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
6373 * my_callback should return 1 if it wants BN_is_prime_ex()
6374 * to continue, or 0 to stop.
6379 *) Change the ZLIB compression method to be stateful, and make it
6380 available to TLS with the number defined in
6381 draft-ietf-tls-compression-04.txt.
6384 *) Add the ASN.1 structures and functions for CertificatePair, which
6385 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
6387 CertificatePair ::= SEQUENCE {
6388 forward [0] Certificate OPTIONAL,
6389 reverse [1] Certificate OPTIONAL,
6390 -- at least one of the pair shall be present -- }
6392 Also implement the PEM functions to read and write certificate
6393 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
6395 This needed to be defined, mostly for the sake of the LDAP
6396 attribute crossCertificatePair, but may prove useful elsewhere as
6400 *) Make it possible to inhibit symlinking of shared libraries in
6401 Makefile.shared, for Cygwin's sake.
6404 *) Extend the BIGNUM API by creating a function
6405 void BN_set_negative(BIGNUM *a, int neg);
6406 and a macro that behave like
6407 int BN_is_negative(const BIGNUM *a);
6409 to avoid the need to access 'a->neg' directly in applications.
6412 *) Implement fast modular reduction for pseudo-Mersenne primes
6413 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
6414 EC_GROUP_new_curve_GFp() will now automatically use this
6416 [Nils Larsch <nla@trustcenter.de>]
6418 *) Add new lock type (CRYPTO_LOCK_BN).
6421 *) Change the ENGINE framework to automatically load engines
6422 dynamically from specific directories unless they could be
6423 found to already be built in or loaded. Move all the
6424 current engines except for the cryptodev one to a new
6426 The engines in engines/ are built as shared libraries if
6427 the "shared" options was given to ./Configure or ./config.
6428 Otherwise, they are inserted in libcrypto.a.
6429 /usr/local/ssl/engines is the default directory for dynamic
6430 engines, but that can be overridden at configure time through
6431 the usual use of --prefix and/or --openssldir, and at run
6432 time with the environment variable OPENSSL_ENGINES.
6433 [Geoff Thorpe and Richard Levitte]
6435 *) Add Makefile.shared, a helper makefile to build shared
6436 libraries. Adapt Makefile.org.
6439 *) Add version info to Win32 DLLs.
6440 [Peter 'Luna' Runestig" <peter@runestig.com>]
6442 *) Add new 'medium level' PKCS#12 API. Certificates and keys
6443 can be added using this API to created arbitrary PKCS#12
6444 files while avoiding the low level API.
6446 New options to PKCS12_create(), key or cert can be NULL and
6447 will then be omitted from the output file. The encryption
6448 algorithm NIDs can be set to -1 for no encryption, the mac
6449 iteration count can be set to 0 to omit the mac.
6451 Enhance pkcs12 utility by making the -nokeys and -nocerts
6452 options work when creating a PKCS#12 file. New option -nomac
6453 to omit the mac, NONE can be set for an encryption algorithm.
6454 New code is modified to use the enhanced PKCS12_create()
6455 instead of the low level API.
6458 *) Extend ASN1 encoder to support indefinite length constructed
6459 encoding. This can output sequences tags and octet strings in
6460 this form. Modify pk7_asn1.c to support indefinite length
6461 encoding. This is experimental and needs additional code to
6462 be useful, such as an ASN1 bio and some enhanced streaming
6465 Extend template encode functionality so that tagging is passed
6466 down to the template encoder.
6469 *) Let 'openssl req' fail if an argument to '-newkey' is not
6470 recognized instead of using RSA as a default.
6473 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
6474 As these are not official, they are not included in "ALL";
6475 the "ECCdraft" ciphersuite group alias can be used to select them.
6476 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
6478 *) Add ECDH engine support.
6479 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
6481 *) Add ECDH in new directory crypto/ecdh/.
6482 [Douglas Stebila (Sun Microsystems Laboratories)]
6484 *) Let BN_rand_range() abort with an error after 100 iterations
6485 without success (which indicates a broken PRNG).
6488 *) Change BN_mod_sqrt() so that it verifies that the input value
6489 is really the square of the return value. (Previously,
6490 BN_mod_sqrt would show GIGO behaviour.)
6493 *) Add named elliptic curves over binary fields from X9.62, SECG,
6494 and WAP/WTLS; add OIDs that were still missing.
6496 [Sheueling Chang Shantz and Douglas Stebila
6497 (Sun Microsystems Laboratories)]
6499 *) Extend the EC library for elliptic curves over binary fields
6500 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
6503 EC_GF2m_simple_method
6507 EC_GROUP_new_curve_GF2m
6508 EC_GROUP_set_curve_GF2m
6509 EC_GROUP_get_curve_GF2m
6510 EC_POINT_set_affine_coordinates_GF2m
6511 EC_POINT_get_affine_coordinates_GF2m
6512 EC_POINT_set_compressed_coordinates_GF2m
6514 Point compression for binary fields is disabled by default for
6515 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
6518 As binary polynomials are represented as BIGNUMs, various members
6519 of the EC_GROUP and EC_POINT data structures can be shared
6520 between the implementations for prime fields and binary fields;
6521 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
6522 are essentially identical to their ..._GFp counterparts.
6523 (For simplicity, the '..._GFp' prefix has been dropped from
6524 various internal method names.)
6526 An internal 'field_div' method (similar to 'field_mul' and
6527 'field_sqr') has been added; this is used only for binary fields.
6529 [Sheueling Chang Shantz and Douglas Stebila
6530 (Sun Microsystems Laboratories)]
6532 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
6533 through methods ('mul', 'precompute_mult').
6535 The generic implementations (now internally called 'ec_wNAF_mul'
6536 and 'ec_wNAF_precomputed_mult') remain the default if these
6537 methods are undefined.
6539 [Sheueling Chang Shantz and Douglas Stebila
6540 (Sun Microsystems Laboratories)]
6542 *) New function EC_GROUP_get_degree, which is defined through
6543 EC_METHOD. For curves over prime fields, this returns the bit
6544 length of the modulus.
6546 [Sheueling Chang Shantz and Douglas Stebila
6547 (Sun Microsystems Laboratories)]
6549 *) New functions EC_GROUP_dup, EC_POINT_dup.
6550 (These simply call ..._new and ..._copy).
6552 [Sheueling Chang Shantz and Douglas Stebila
6553 (Sun Microsystems Laboratories)]
6555 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
6556 Polynomials are represented as BIGNUMs (where the sign bit is not
6557 used) in the following functions [macros]:
6560 BN_GF2m_sub [= BN_GF2m_add]
6561 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
6562 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
6563 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
6565 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
6566 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
6567 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
6568 BN_GF2m_cmp [= BN_ucmp]
6570 (Note that only the 'mod' functions are actually for fields GF(2^m).
6571 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
6573 For some functions, an the irreducible polynomial defining a
6574 field can be given as an 'unsigned int[]' with strictly
6575 decreasing elements giving the indices of those bits that are set;
6576 i.e., p[] represents the polynomial
6577 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
6579 p[0] > p[1] > ... > p[k] = 0.
6580 This applies to the following functions:
6585 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
6586 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
6588 BN_GF2m_mod_sqrt_arr
6589 BN_GF2m_mod_solve_quad_arr
6593 Conversion can be performed by the following functions:
6598 bntest.c has additional tests for binary polynomial arithmetic.
6600 Two implementations for BN_GF2m_mod_div() are available.
6601 The default algorithm simply uses BN_GF2m_mod_inv() and
6602 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
6603 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
6604 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
6606 [Sheueling Chang Shantz and Douglas Stebila
6607 (Sun Microsystems Laboratories)]
6609 *) Add new error code 'ERR_R_DISABLED' that can be used when some
6610 functionality is disabled at compile-time.
6611 [Douglas Stebila <douglas.stebila@sun.com>]
6613 *) Change default behaviour of 'openssl asn1parse' so that more
6614 information is visible when viewing, e.g., a certificate:
6616 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
6617 mode the content of non-printable OCTET STRINGs is output in a
6618 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
6619 avoid the appearance of a printable string.
6620 [Nils Larsch <nla@trustcenter.de>]
6622 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
6624 EC_GROUP_set_asn1_flag()
6625 EC_GROUP_get_asn1_flag()
6626 EC_GROUP_set_point_conversion_form()
6627 EC_GROUP_get_point_conversion_form()
6628 These control ASN1 encoding details:
6629 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
6630 has been set to OPENSSL_EC_NAMED_CURVE.
6631 - Points are encoded in uncompressed form by default; options for
6632 asn1_for are as for point2oct, namely
6633 POINT_CONVERSION_COMPRESSED
6634 POINT_CONVERSION_UNCOMPRESSED
6635 POINT_CONVERSION_HYBRID
6637 Also add 'seed' and 'seed_len' members to EC_GROUP with access
6640 EC_GROUP_get0_seed()
6641 EC_GROUP_get_seed_len()
6642 This is used only for ASN1 purposes (so far).
6643 [Nils Larsch <nla@trustcenter.de>]
6645 *) Add 'field_type' member to EC_METHOD, which holds the NID
6646 of the appropriate field type OID. The new function
6647 EC_METHOD_get_field_type() returns this value.
6648 [Nils Larsch <nla@trustcenter.de>]
6653 EC_POINT_point2hex()
6654 EC_POINT_hex2point()
6655 providing useful interfaces to EC_POINT_point2oct() and
6656 EC_POINT_oct2point().
6657 [Nils Larsch <nla@trustcenter.de>]
6659 *) Change internals of the EC library so that the functions
6660 EC_GROUP_set_generator()
6661 EC_GROUP_get_generator()
6662 EC_GROUP_get_order()
6663 EC_GROUP_get_cofactor()
6664 are implemented directly in crypto/ec/ec_lib.c and not dispatched
6665 to methods, which would lead to unnecessary code duplication when
6666 adding different types of curves.
6667 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
6669 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
6670 arithmetic, and such that modified wNAFs are generated
6671 (which avoid length expansion in many cases).
6674 *) Add a function EC_GROUP_check_discriminant() (defined via
6675 EC_METHOD) that verifies that the curve discriminant is non-zero.
6677 Add a function EC_GROUP_check() that makes some sanity tests
6678 on a EC_GROUP, its generator and order. This includes
6679 EC_GROUP_check_discriminant().
6680 [Nils Larsch <nla@trustcenter.de>]
6682 *) Add ECDSA in new directory crypto/ecdsa/.
6684 Add applications 'openssl ecparam' and 'openssl ecdsa'
6685 (these are based on 'openssl dsaparam' and 'openssl dsa').
6687 ECDSA support is also included in various other files across the
6688 library. Most notably,
6689 - 'openssl req' now has a '-newkey ecdsa:file' option;
6690 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
6691 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
6692 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
6693 them suitable for ECDSA where domain parameters must be
6694 extracted before the specific public key;
6695 - ECDSA engine support has been added.
6696 [Nils Larsch <nla@trustcenter.de>]
6698 *) Include some named elliptic curves, and add OIDs from X9.62,
6699 SECG, and WAP/WTLS. Each curve can be obtained from the new
6701 EC_GROUP_new_by_curve_name(),
6702 and the list of available named curves can be obtained with
6703 EC_get_builtin_curves().
6704 Also add a 'curve_name' member to EC_GROUP objects, which can be
6706 EC_GROUP_set_curve_name()
6707 EC_GROUP_get_curve_name()
6708 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
6710 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
6711 was actually never needed) and in BN_mul(). The removal in BN_mul()
6712 required a small change in bn_mul_part_recursive() and the addition
6713 of the functions bn_cmp_part_words(), bn_sub_part_words() and
6714 bn_add_part_words(), which do the same thing as bn_cmp_words(),
6715 bn_sub_words() and bn_add_words() except they take arrays with
6719 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
6721 *) Cleanse PEM buffers before freeing them since they may contain
6723 [Benjamin Bennett <ben@psc.edu>]
6725 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
6726 a ciphersuite string such as "DEFAULT:RSA" cannot enable
6727 authentication-only ciphersuites.
6730 *) Since AES128 and AES256 share a single mask bit in the logic of
6731 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
6732 kludge to work properly if AES128 is available and AES256 isn't.
6735 *) Expand security boundary to match 1.1.1 module.
6738 *) Remove redundant features: hash file source, editing of test vectors
6739 modify fipsld to use external fips_premain.c signature.
6742 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
6743 run algorithm test programs.
6746 *) Make algorithm test programs more tolerant of whitespace.
6749 *) Have SSL/TLS server implementation tolerate "mismatched" record
6750 protocol version while receiving ClientHello even if the
6751 ClientHello is fragmented. (The server can't insist on the
6752 particular protocol version it has chosen before the ServerHello
6753 message has informed the client about his choice.)
6756 *) Load error codes if they are not already present instead of using a
6757 static variable. This allows them to be cleanly unloaded and reloaded.
6760 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
6762 *) Introduce limits to prevent malicious keys being able to
6763 cause a denial of service. (CVE-2006-2940)
6764 [Steve Henson, Bodo Moeller]
6766 *) Fix ASN.1 parsing of certain invalid structures that can result
6767 in a denial of service. (CVE-2006-2937) [Steve Henson]
6769 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
6770 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
6772 *) Fix SSL client code which could crash if connecting to a
6773 malicious SSLv2 server. (CVE-2006-4343)
6774 [Tavis Ormandy and Will Drewry, Google Security Team]
6776 *) Change ciphersuite string processing so that an explicit
6777 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
6778 will no longer include "AES128-SHA"), and any other similar
6779 ciphersuite (same bitmap) from *other* protocol versions (so that
6780 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
6781 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
6782 changes from 0.9.8b and 0.9.8d.
6785 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
6787 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
6788 (CVE-2006-4339) [Ben Laurie and Google Security Team]
6790 *) Change the Unix randomness entropy gathering to use poll() when
6791 possible instead of select(), since the latter has some
6792 undesirable limitations.
6793 [Darryl Miles via Richard Levitte and Bodo Moeller]
6795 *) Disable rogue ciphersuites:
6797 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
6798 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
6799 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
6801 The latter two were purportedly from
6802 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
6805 Also deactivate the remaining ciphersuites from
6806 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
6807 unofficial, and the ID has long expired.
6810 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
6811 dual-core machines) and other potential thread-safety issues.
6814 Changes between 0.9.7i and 0.9.7j [04 May 2006]
6816 *) Adapt fipsld and the build system to link against the validated FIPS
6817 module in FIPS mode.
6820 *) Fixes for VC++ 2005 build under Windows.
6823 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
6824 from a Windows bash shell such as MSYS. It is autodetected from the
6825 "config" script when run from a VC++ environment. Modify standard VC++
6826 build to use fipscanister.o from the GNU make build.
6829 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
6831 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
6832 The value now differs depending on if you build for FIPS or not.
6833 BEWARE! A program linked with a shared FIPSed libcrypto can't be
6834 safely run with a non-FIPSed libcrypto, as it may crash because of
6835 the difference induced by this change.
6838 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
6840 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
6841 (part of SSL_OP_ALL). This option used to disable the
6842 countermeasure against man-in-the-middle protocol-version
6843 rollback in the SSL 2.0 server implementation, which is a bad
6844 idea. (CVE-2005-2969)
6846 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
6847 for Information Security, National Institute of Advanced Industrial
6848 Science and Technology [AIST], Japan)]
6850 *) Minimal support for X9.31 signatures and PSS padding modes. This is
6851 mainly for FIPS compliance and not fully integrated at this stage.
6854 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
6855 the exponentiation using a fixed-length exponent. (Otherwise,
6856 the information leaked through timing could expose the secret key
6857 after many signatures; cf. Bleichenbacher's attack on DSA with
6861 *) Make a new fixed-window mod_exp implementation the default for
6862 RSA, DSA, and DH private-key operations so that the sequence of
6863 squares and multiplies and the memory access pattern are
6864 independent of the particular secret key. This will mitigate
6865 cache-timing and potential related attacks.
6867 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
6868 and this is automatically used by BN_mod_exp_mont() if the new flag
6869 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
6870 will use this BN flag for private exponents unless the flag
6871 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
6872 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
6874 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
6876 *) Change the client implementation for SSLv23_method() and
6877 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
6878 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
6879 (Previously, the SSL 2.0 backwards compatible Client Hello
6880 message format would be used even with SSL_OP_NO_SSLv2.)
6883 *) Add support for smime-type MIME parameter in S/MIME messages which some
6887 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
6888 a threadsafe manner. Modify rsa code to use new function and add calls
6889 to dsa and dh code (which had race conditions before).
6892 *) Include the fixed error library code in the C error file definitions
6893 instead of fixing them up at runtime. This keeps the error code
6894 structures constant.
6897 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
6899 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
6902 *) Fixes for newer kerberos headers. NB: the casts are needed because
6903 the 'length' field is signed on one version and unsigned on another
6904 with no (?) obvious way to tell the difference, without these VC++
6905 complains. Also the "definition" of FAR (blank) is no longer included
6906 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
6907 some needed definitions.
6910 *) Undo Cygwin change.
6913 *) Added support for proxy certificates according to RFC 3820.
6914 Because they may be a security thread to unaware applications,
6915 they must be explicitly allowed in run-time. See
6916 docs/HOWTO/proxy_certificates.txt for further information.
6919 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
6921 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
6922 server and client random values. Previously
6923 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
6924 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
6926 This change has negligible security impact because:
6928 1. Server and client random values still have 24 bytes of pseudo random
6931 2. Server and client random values are sent in the clear in the initial
6934 3. The master secret is derived using the premaster secret (48 bytes in
6935 size for static RSA ciphersuites) as well as client server and random
6938 The OpenSSL team would like to thank the UK NISCC for bringing this issue
6941 [Stephen Henson, reported by UK NISCC]
6943 *) Use Windows randomness collection on Cygwin.
6946 *) Fix hang in EGD/PRNGD query when communication socket is closed
6947 prematurely by EGD/PRNGD.
6948 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
6950 *) Prompt for pass phrases when appropriate for PKCS12 input format.
6953 *) Back-port of selected performance improvements from development
6954 branch, as well as improved support for PowerPC platforms.
6957 *) Add lots of checks for memory allocation failure, error codes to indicate
6958 failure and freeing up memory if a failure occurs.
6959 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
6961 *) Add new -passin argument to dgst.
6964 *) Perform some character comparisons of different types in X509_NAME_cmp:
6965 this is needed for some certificates that re-encode DNs into UTF8Strings
6966 (in violation of RFC3280) and can't or won't issue name rollover
6970 *) Make an explicit check during certificate validation to see that
6971 the CA setting in each certificate on the chain is correct. As a
6972 side effect always do the following basic checks on extensions,
6973 not just when there's an associated purpose to the check:
6975 - if there is an unhandled critical extension (unless the user
6976 has chosen to ignore this fault)
6977 - if the path length has been exceeded (if one is set at all)
6978 - that certain extensions fit the associated purpose (if one has
6982 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
6984 *) Avoid a race condition when CRLs are checked in a multi threaded
6985 environment. This would happen due to the reordering of the revoked
6986 entries during signature checking and serial number lookup. Now the
6987 encoding is cached and the serial number sort performed under a lock.
6988 Add new STACK function sk_is_sorted().
6991 *) Add Delta CRL to the extension code.
6994 *) Various fixes to s3_pkt.c so alerts are sent properly.
6995 [David Holmes <d.holmes@f5.com>]
6997 *) Reduce the chances of duplicate issuer name and serial numbers (in
6998 violation of RFC3280) using the OpenSSL certificate creation utilities.
6999 This is done by creating a random 64 bit value for the initial serial
7000 number when a serial number file is created or when a self signed
7001 certificate is created using 'openssl req -x509'. The initial serial
7002 number file is created using 'openssl x509 -next_serial' in CA.pl
7003 rather than being initialized to 1.
7006 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
7008 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
7009 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
7010 [Joe Orton, Steve Henson]
7012 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
7014 [Joe Orton, Steve Henson]
7016 *) Make it possible to have multiple active certificates with the same
7017 subject in the CA index file. This is done only if the keyword
7018 'unique_subject' is set to 'no' in the main CA section (default
7019 if 'CA_default') of the configuration file. The value is saved
7020 with the database itself in a separate index attribute file,
7021 named like the index file with '.attr' appended to the name.
7024 *) X509 verify fixes. Disable broken certificate workarounds when
7025 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
7026 keyUsage extension present. Don't accept CRLs with unhandled critical
7027 extensions: since verify currently doesn't process CRL extensions this
7028 rejects a CRL with *any* critical extensions. Add new verify error codes
7032 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
7033 A clarification of RFC2560 will require the use of OCTET STRINGs and
7034 some implementations cannot handle the current raw format. Since OpenSSL
7035 copies and compares OCSP nonces as opaque blobs without any attempt at
7036 parsing them this should not create any compatibility issues.
7039 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
7040 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
7041 this HMAC (and other) operations are several times slower than OpenSSL
7045 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
7046 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
7048 *) Use the correct content when signing type "other".
7051 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
7053 *) Fix various bugs revealed by running the NISCC test suite:
7055 Stop out of bounds reads in the ASN1 code when presented with
7056 invalid tags (CVE-2003-0543 and CVE-2003-0544).
7058 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
7060 If verify callback ignores invalid public key errors don't try to check
7061 certificate signature with the NULL public key.
7065 *) New -ignore_err option in ocsp application to stop the server
7066 exiting on the first error in a request.
7069 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
7070 if the server requested one: as stated in TLS 1.0 and SSL 3.0
7074 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
7075 extra data after the compression methods not only for TLS 1.0
7076 but also for SSL 3.0 (as required by the specification).
7077 [Bodo Moeller; problem pointed out by Matthias Loepfe]
7079 *) Change X509_certificate_type() to mark the key as exported/exportable
7080 when it's 512 *bits* long, not 512 bytes.
7083 *) Change AES_cbc_encrypt() so it outputs exact multiple of
7084 blocks during encryption.
7087 *) Various fixes to base64 BIO and non blocking I/O. On write
7088 flushes were not handled properly if the BIO retried. On read
7089 data was not being buffered properly and had various logic bugs.
7090 This also affects blocking I/O when the data being decoded is a
7094 *) Various S/MIME bugfixes and compatibility changes:
7095 output correct application/pkcs7 MIME type if
7096 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
7097 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
7098 of files as .eml work). Correctly handle very long lines in MIME
7102 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
7104 *) Countermeasure against the Klima-Pokorny-Rosa extension of
7105 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
7106 a protocol version number mismatch like a decryption error
7107 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
7110 *) Turn on RSA blinding by default in the default implementation
7111 to avoid a timing attack. Applications that don't want it can call
7112 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
7113 They would be ill-advised to do so in most cases.
7114 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
7116 *) Change RSA blinding code so that it works when the PRNG is not
7117 seeded (in this case, the secret RSA exponent is abused as
7118 an unpredictable seed -- if it is not unpredictable, there
7119 is no point in blinding anyway). Make RSA blinding thread-safe
7120 by remembering the creator's thread ID in rsa->blinding and
7121 having all other threads use local one-time blinding factors
7122 (this requires more computation than sharing rsa->blinding, but
7123 avoids excessive locking; and if an RSA object is not shared
7124 between threads, blinding will still be very fast).
7127 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
7128 ENGINE as defaults for all supported algorithms irrespective of
7129 the 'flags' parameter. 'flags' is now honoured, so applications
7130 should make sure they are passing it correctly.
7133 *) Target "mingw" now allows native Windows code to be generated in
7134 the Cygwin environment as well as with the MinGW compiler.
7137 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
7139 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
7140 via timing by performing a MAC computation even if incorrect
7141 block cipher padding has been found. This is a countermeasure
7142 against active attacks where the attacker has to distinguish
7143 between bad padding and a MAC verification error. (CVE-2003-0078)
7145 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
7146 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
7147 Martin Vuagnoux (EPFL, Ilion)]
7149 *) Make the no-err option work as intended. The intention with no-err
7150 is not to have the whole error stack handling routines removed from
7151 libcrypto, it's only intended to remove all the function name and
7152 reason texts, thereby removing some of the footprint that may not
7153 be interesting if those errors aren't displayed anyway.
7155 NOTE: it's still possible for any application or module to have its
7156 own set of error texts inserted. The routines are there, just not
7157 used by default when no-err is given.
7160 *) Add support for FreeBSD on IA64.
7161 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
7163 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
7164 Kerberos function mit_des_cbc_cksum(). Before this change,
7165 the value returned by DES_cbc_cksum() was like the one from
7166 mit_des_cbc_cksum(), except the bytes were swapped.
7167 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
7169 *) Allow an application to disable the automatic SSL chain building.
7170 Before this a rather primitive chain build was always performed in
7171 ssl3_output_cert_chain(): an application had no way to send the
7172 correct chain if the automatic operation produced an incorrect result.
7174 Now the chain builder is disabled if either:
7176 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
7178 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
7180 The reasoning behind this is that an application would not want the
7181 auto chain building to take place if extra chain certificates are
7182 present and it might also want a means of sending no additional
7183 certificates (for example the chain has two certificates and the
7187 *) Add the possibility to build without the ENGINE framework.
7188 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
7190 *) Under Win32 gmtime() can return NULL: check return value in
7191 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
7194 *) DSA routines: under certain error conditions uninitialized BN objects
7195 could be freed. Solution: make sure initialization is performed early
7196 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
7197 Nils Larsch <nla@trustcenter.de> via PR#459)
7200 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
7201 checked on reconnect on the client side, therefore session resumption
7202 could still fail with a "ssl session id is different" error. This
7203 behaviour is masked when SSL_OP_ALL is used due to
7204 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
7205 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
7206 followup to PR #377.
7209 *) IA-32 assembler support enhancements: unified ELF targets, support
7210 for SCO/Caldera platforms, fix for Cygwin shared build.
7213 *) Add support for FreeBSD on sparc64. As a consequence, support for
7214 FreeBSD on non-x86 processors is separate from x86 processors on
7215 the config script, much like the NetBSD support.
7216 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
7218 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
7220 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
7223 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
7224 code (06) was taken as the first octet of the session ID and the last
7225 octet was ignored consequently. As a result SSLv2 client side session
7226 caching could not have worked due to the session ID mismatch between
7228 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
7232 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
7233 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
7237 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
7238 seems that in spite of existing for more than a year, many application
7239 author have done nothing to provide the necessary callbacks, which
7240 means that this particular engine will not work properly anywhere.
7241 This is a very unfortunate situation which forces us, in the name
7242 of usability, to give the hw_ncipher.c a static lock, which is part
7244 NOTE: This is for the 0.9.7 series ONLY. This hack will never
7245 appear in 0.9.8 or later. We EXPECT application authors to have
7246 dealt properly with this when 0.9.8 is released (unless we actually
7247 make such changes in the libcrypto locking code that changes will
7248 have to be made anyway).
7251 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
7252 octets have been read, EOF or an error occurs. Without this change
7253 some truncated ASN1 structures will not produce an error.
7256 *) Disable Heimdal support, since it hasn't been fully implemented.
7257 Still give the possibility to force the use of Heimdal, but with
7258 warnings and a request that patches get sent to openssl-dev.
7261 *) Add the VC-CE target, introduce the WINCE sysname, and add
7262 INSTALL.WCE and appropriate conditionals to make it build.
7263 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
7265 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
7266 cygssl-x.y.z.dll, where x, y and z are the major, minor and
7267 edit numbers of the version.
7268 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
7270 *) Introduce safe string copy and catenation functions
7271 (BUF_strlcpy() and BUF_strlcat()).
7272 [Ben Laurie (CHATS) and Richard Levitte]
7274 *) Avoid using fixed-size buffers for one-line DNs.
7275 [Ben Laurie (CHATS)]
7277 *) Add BUF_MEM_grow_clean() to avoid information leakage when
7278 resizing buffers containing secrets, and use where appropriate.
7279 [Ben Laurie (CHATS)]
7281 *) Avoid using fixed size buffers for configuration file location.
7282 [Ben Laurie (CHATS)]
7284 *) Avoid filename truncation for various CA files.
7285 [Ben Laurie (CHATS)]
7287 *) Use sizeof in preference to magic numbers.
7288 [Ben Laurie (CHATS)]
7290 *) Avoid filename truncation in cert requests.
7291 [Ben Laurie (CHATS)]
7293 *) Add assertions to check for (supposedly impossible) buffer
7295 [Ben Laurie (CHATS)]
7297 *) Don't cache truncated DNS entries in the local cache (this could
7298 potentially lead to a spoofing attack).
7299 [Ben Laurie (CHATS)]
7301 *) Fix various buffers to be large enough for hex/decimal
7302 representations in a platform independent manner.
7303 [Ben Laurie (CHATS)]
7305 *) Add CRYPTO_realloc_clean() to avoid information leakage when
7306 resizing buffers containing secrets, and use where appropriate.
7307 [Ben Laurie (CHATS)]
7309 *) Add BIO_indent() to avoid much slightly worrying code to do
7311 [Ben Laurie (CHATS)]
7313 *) Convert sprintf()/BIO_puts() to BIO_printf().
7314 [Ben Laurie (CHATS)]
7316 *) buffer_gets() could terminate with the buffer only half
7318 [Ben Laurie (CHATS)]
7320 *) Add assertions to prevent user-supplied crypto functions from
7321 overflowing internal buffers by having large block sizes, etc.
7322 [Ben Laurie (CHATS)]
7324 *) New OPENSSL_assert() macro (similar to assert(), but enabled
7326 [Ben Laurie (CHATS)]
7328 *) Eliminate unused copy of key in RC4.
7329 [Ben Laurie (CHATS)]
7331 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
7332 [Ben Laurie (CHATS)]
7334 *) Fix off-by-one error in EGD path.
7335 [Ben Laurie (CHATS)]
7337 *) If RANDFILE path is too long, ignore instead of truncating.
7338 [Ben Laurie (CHATS)]
7340 *) Eliminate unused and incorrectly sized X.509 structure
7342 [Ben Laurie (CHATS)]
7344 *) Eliminate unused and dangerous function knumber().
7345 [Ben Laurie (CHATS)]
7347 *) Eliminate unused and dangerous structure, KSSL_ERR.
7348 [Ben Laurie (CHATS)]
7350 *) Protect against overlong session ID context length in an encoded
7351 session object. Since these are local, this does not appear to be
7353 [Ben Laurie (CHATS)]
7355 *) Change from security patch (see 0.9.6e below) that did not affect
7356 the 0.9.6 release series:
7358 Remote buffer overflow in SSL3 protocol - an attacker could
7359 supply an oversized master key in Kerberos-enabled versions.
7361 [Ben Laurie (CHATS)]
7363 *) Change the SSL kerb5 codes to match RFC 2712.
7366 *) Make -nameopt work fully for req and add -reqopt switch.
7367 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
7369 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
7370 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
7372 *) Make sure tests can be performed even if the corresponding algorithms
7373 have been removed entirely. This was also the last step to make
7374 OpenSSL compilable with DJGPP under all reasonable conditions.
7375 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
7377 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
7378 to allow version independent disabling of normally unselected ciphers,
7379 which may be activated as a side-effect of selecting a single cipher.
7381 (E.g., cipher list string "RSA" enables ciphersuites that are left
7382 out of "ALL" because they do not provide symmetric encryption.
7383 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
7384 [Lutz Jaenicke, Bodo Moeller]
7386 *) Add appropriate support for separate platform-dependent build
7387 directories. The recommended way to make a platform-dependent
7388 build directory is the following (tested on Linux), maybe with
7391 # Place yourself outside of the OpenSSL source tree. In
7392 # this example, the environment variable OPENSSL_SOURCE
7393 # is assumed to contain the absolute OpenSSL source directory.
7394 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
7395 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
7396 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
7397 mkdir -p `dirname $F`
7398 ln -s $OPENSSL_SOURCE/$F $F
7401 To be absolutely sure not to disturb the source tree, a "make clean"
7402 is a good thing. If it isn't successful, don't worry about it,
7403 it probably means the source directory is very clean.
7406 *) Make sure any ENGINE control commands make local copies of string
7407 pointers passed to them whenever necessary. Otherwise it is possible
7408 the caller may have overwritten (or deallocated) the original string
7409 data when a later ENGINE operation tries to use the stored values.
7410 [Götz Babin-Ebell <babinebell@trustcenter.de>]
7412 *) Improve diagnostics in file reading and command-line digests.
7413 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
7415 *) Add AES modes CFB and OFB to the object database. Correct an
7416 error in AES-CFB decryption.
7419 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
7420 allows existing EVP_CIPHER_CTX structures to be reused after
7421 calling EVP_*Final(). This behaviour is used by encryption
7422 BIOs and some applications. This has the side effect that
7423 applications must explicitly clean up cipher contexts with
7424 EVP_CIPHER_CTX_cleanup() or they will leak memory.
7427 *) Check the values of dna and dnb in bn_mul_recursive before calling
7428 bn_mul_comba (a non zero value means the a or b arrays do not contain
7429 n2 elements) and fallback to bn_mul_normal if either is not zero.
7432 *) Fix escaping of non-ASCII characters when using the -subj option
7433 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
7436 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
7437 form for "surname", serialNumber has no short form.
7438 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
7439 therefore remove "mail" short name for "internet 7".
7440 The OID for unique identifiers in X509 certificates is
7441 x500UniqueIdentifier, not uniqueIdentifier.
7442 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
7445 *) Add an "init" command to the ENGINE config module and auto initialize
7446 ENGINEs. Without any "init" command the ENGINE will be initialized
7447 after all ctrl commands have been executed on it. If init=1 the
7448 ENGINE is initialized at that point (ctrls before that point are run
7449 on the uninitialized ENGINE and after on the initialized one). If
7450 init=0 then the ENGINE will not be initialized at all.
7453 *) Fix the 'app_verify_callback' interface so that the user-defined
7454 argument is actually passed to the callback: In the
7455 SSL_CTX_set_cert_verify_callback() prototype, the callback
7456 declaration has been changed from
7459 int (*cb)(X509_STORE_CTX *,void *);
7460 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
7461 i=s->ctx->app_verify_callback(&ctx)
7462 has been changed into
7463 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
7465 To update applications using SSL_CTX_set_cert_verify_callback(),
7466 a dummy argument can be added to their callback functions.
7467 [D. K. Smetters <smetters@parc.xerox.com>]
7469 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
7470 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
7472 *) Add and OPENSSL_LOAD_CONF define which will cause
7473 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
7474 This allows older applications to transparently support certain
7475 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
7476 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
7477 load the config file and OPENSSL_add_all_algorithms_conf() which will
7478 always load it have also been added.
7481 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
7482 Adjust NIDs and EVP layer.
7483 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
7485 *) Config modules support in openssl utility.
7487 Most commands now load modules from the config file,
7488 though in a few (such as version) this isn't done
7489 because it couldn't be used for anything.
7491 In the case of ca and req the config file used is
7492 the same as the utility itself: that is the -config
7493 command line option can be used to specify an
7497 *) Move default behaviour from OPENSSL_config(). If appname is NULL
7498 use "openssl_conf" if filename is NULL use default openssl config file.
7501 *) Add an argument to OPENSSL_config() to allow the use of an alternative
7502 config section name. Add a new flag to tolerate a missing config file
7503 and move code to CONF_modules_load_file().
7506 *) Support for crypto accelerator cards from Accelerated Encryption
7507 Processing, www.aep.ie. (Use engine 'aep')
7508 The support was copied from 0.9.6c [engine] and adapted/corrected
7509 to work with the new engine framework.
7510 [AEP Inc. and Richard Levitte]
7512 *) Support for SureWare crypto accelerator cards from Baltimore
7513 Technologies. (Use engine 'sureware')
7514 The support was copied from 0.9.6c [engine] and adapted
7515 to work with the new engine framework.
7518 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
7519 make the newer ENGINE framework commands for the CHIL engine work.
7520 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
7522 *) Make it possible to produce shared libraries on ReliantUNIX.
7523 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
7525 *) Add the configuration target debug-linux-ppro.
7526 Make 'openssl rsa' use the general key loading routines
7527 implemented in apps.c, and make those routines able to
7528 handle the key format FORMAT_NETSCAPE and the variant
7530 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7532 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
7533 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7535 *) Add -keyform to rsautl, and document -engine.
7536 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
7538 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
7539 BIO_R_NO_SUCH_FILE error code rather than the generic
7540 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
7543 *) Add new functions
7545 ERR_peek_last_error_line
7546 ERR_peek_last_error_line_data.
7547 These are similar to
7550 ERR_peek_error_line_data,
7551 but report on the latest error recorded rather than the first one
7552 still in the error queue.
7553 [Ben Laurie, Bodo Moeller]
7555 *) default_algorithms option in ENGINE config module. This allows things
7557 default_algorithms = ALL
7558 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
7561 *) Preliminary ENGINE config module.
7564 *) New experimental application configuration code.
7567 *) Change the AES code to follow the same name structure as all other
7568 symmetric ciphers, and behave the same way. Move everything to
7569 the directory crypto/aes, thereby obsoleting crypto/rijndael.
7570 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
7572 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
7573 [Ben Laurie and Theo de Raadt]
7575 *) Add option to output public keys in req command.
7576 [Massimiliano Pala madwolf@openca.org]
7578 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
7579 (up to about 10% better than before for P-192 and P-224).
7582 *) New functions/macros
7584 SSL_CTX_set_msg_callback(ctx, cb)
7585 SSL_CTX_set_msg_callback_arg(ctx, arg)
7586 SSL_set_msg_callback(ssl, cb)
7587 SSL_set_msg_callback_arg(ssl, arg)
7589 to request calling a callback function
7591 void cb(int write_p, int version, int content_type,
7592 const void *buf, size_t len, SSL *ssl, void *arg)
7594 whenever a protocol message has been completely received
7595 (write_p == 0) or sent (write_p == 1). Here 'version' is the
7596 protocol version according to which the SSL library interprets
7597 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
7598 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
7599 the content type as defined in the SSL 3.0/TLS 1.0 protocol
7600 specification (change_cipher_spec(20), alert(21), handshake(22)).
7601 'buf' and 'len' point to the actual message, 'ssl' to the
7602 SSL object, and 'arg' is the application-defined value set by
7603 SSL[_CTX]_set_msg_callback_arg().
7605 'openssl s_client' and 'openssl s_server' have new '-msg' options
7606 to enable a callback that displays all protocol messages.
7609 *) Change the shared library support so shared libraries are built as
7610 soon as the corresponding static library is finished, and thereby get
7611 openssl and the test programs linked against the shared library.
7612 This still only happens when the keyword "shard" has been given to
7613 the configuration scripts.
7615 NOTE: shared library support is still an experimental thing, and
7616 backward binary compatibility is still not guaranteed.
7617 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
7619 *) Add support for Subject Information Access extension.
7620 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
7622 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
7623 additional bytes when new memory had to be allocated, not just
7624 when reusing an existing buffer.
7627 *) New command line and configuration option 'utf8' for the req command.
7628 This allows field values to be specified as UTF8 strings.
7631 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
7632 runs for the former and machine-readable output for the latter.
7635 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
7636 of the e-mail address in the DN (i.e., it will go into a certificate
7637 extension only). The new configuration file option 'email_in_dn = no'
7638 has the same effect.
7639 [Massimiliano Pala madwolf@openca.org]
7641 *) Change all functions with names starting with des_ to be starting
7642 with DES_ instead. Add wrappers that are compatible with libdes,
7643 but are named _ossl_old_des_*. Finally, add macros that map the
7644 des_* symbols to the corresponding _ossl_old_des_* if libdes
7645 compatibility is desired. If OpenSSL 0.9.6c compatibility is
7646 desired, the des_* symbols will be mapped to DES_*, with one
7649 Since we provide two compatibility mappings, the user needs to
7650 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
7651 compatibility is desired. The default (i.e., when that macro
7652 isn't defined) is OpenSSL 0.9.6c compatibility.
7654 There are also macros that enable and disable the support of old
7655 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
7656 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
7657 are defined, the default will apply: to support the old des routines.
7659 In either case, one must include openssl/des.h to get the correct
7660 definitions. Do not try to just include openssl/des_old.h, that
7663 NOTE: This is a major break of an old API into a new one. Software
7664 authors are encouraged to switch to the DES_ style functions. Some
7665 time in the future, des_old.h and the libdes compatibility functions
7666 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
7667 default), and then completely removed.
7670 *) Test for certificates which contain unsupported critical extensions.
7671 If such a certificate is found during a verify operation it is
7672 rejected by default: this behaviour can be overridden by either
7673 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
7674 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
7675 X509_supported_extension() has also been added which returns 1 if a
7676 particular extension is supported.
7679 *) Modify the behaviour of EVP cipher functions in similar way to digests
7680 to retain compatibility with existing code.
7683 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
7684 compatibility with existing code. In particular the 'ctx' parameter does
7685 not have to be to be initialized before the call to EVP_DigestInit() and
7686 it is tidied up after a call to EVP_DigestFinal(). New function
7687 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
7688 EVP_MD_CTX_copy() changed to not require the destination to be
7689 initialized valid and new function EVP_MD_CTX_copy_ex() added which
7690 requires the destination to be valid.
7692 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
7693 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
7696 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
7697 so that complete 'Handshake' protocol structures are kept in memory
7698 instead of overwriting 'msg_type' and 'length' with 'body' data.
7701 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
7702 [Massimo Santin via Richard Levitte]
7704 *) Major restructuring to the underlying ENGINE code. This includes
7705 reduction of linker bloat, separation of pure "ENGINE" manipulation
7706 (initialisation, etc) from functionality dealing with implementations
7707 of specific crypto interfaces. This change also introduces integrated
7708 support for symmetric ciphers and digest implementations - so ENGINEs
7709 can now accelerate these by providing EVP_CIPHER and EVP_MD
7710 implementations of their own. This is detailed in crypto/engine/README
7711 as it couldn't be adequately described here. However, there are a few
7712 API changes worth noting - some RSA, DSA, DH, and RAND functions that
7713 were changed in the original introduction of ENGINE code have now
7714 reverted back - the hooking from this code to ENGINE is now a good
7715 deal more passive and at run-time, operations deal directly with
7716 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
7717 dereferencing through an ENGINE pointer any more. Also, the ENGINE
7718 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
7719 they were not being used by the framework as there is no concept of a
7720 BIGNUM_METHOD and they could not be generalised to the new
7721 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
7722 ENGINE_cpy() has been removed as it cannot be consistently defined in
7726 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
7729 *) Change mkdef.pl to sort symbols that get the same entry number,
7730 and make sure the automatically generated functions ERR_load_*
7731 become part of libeay.num as well.
7734 *) New function SSL_renegotiate_pending(). This returns true once
7735 renegotiation has been requested (either SSL_renegotiate() call
7736 or HelloRequest/ClientHello received from the peer) and becomes
7737 false once a handshake has been completed.
7738 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
7739 sends a HelloRequest, but does not ensure that a handshake takes
7740 place. SSL_renegotiate_pending() is useful for checking if the
7741 client has followed the request.)
7744 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
7745 By default, clients may request session resumption even during
7746 renegotiation (if session ID contexts permit); with this option,
7747 session resumption is possible only in the first handshake.
7749 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
7750 more bits available for options that should not be part of
7751 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
7754 *) Add some demos for certificate and certificate request creation.
7757 *) Make maximum certificate chain size accepted from the peer application
7758 settable (SSL*_get/set_max_cert_list()), as proposed by
7759 "Douglas E. Engert" <deengert@anl.gov>.
7762 *) Add support for shared libraries for Unixware-7
7763 (Boyd Lynn Gerber <gerberb@zenez.com>).
7766 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
7767 be done prior to destruction. Use this to unload error strings from
7768 ENGINEs that load their own error strings. NB: This adds two new API
7769 functions to "get" and "set" this destroy handler in an ENGINE.
7772 *) Alter all existing ENGINE implementations (except "openssl" and
7773 "openbsd") to dynamically instantiate their own error strings. This
7774 makes them more flexible to be built both as statically-linked ENGINEs
7775 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
7776 Also, add stub code to each that makes building them as self-contained
7777 shared-libraries easier (see README.ENGINE).
7780 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
7781 implementations into applications that are completely implemented in
7782 self-contained shared-libraries. The "dynamic" ENGINE exposes control
7783 commands that can be used to configure what shared-library to load and
7784 to control aspects of the way it is handled. Also, made an update to
7785 the README.ENGINE file that brings its information up-to-date and
7786 provides some information and instructions on the "dynamic" ENGINE
7787 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
7790 *) Make it possible to unload ranges of ERR strings with a new
7791 "ERR_unload_strings" function.
7794 *) Add a copy() function to EVP_MD.
7797 *) Make EVP_MD routines take a context pointer instead of just the
7798 md_data void pointer.
7801 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
7802 that the digest can only process a single chunk of data
7803 (typically because it is provided by a piece of
7804 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
7805 is only going to provide a single chunk of data, and hence the
7806 framework needn't accumulate the data for oneshot drivers.
7809 *) As with "ERR", make it possible to replace the underlying "ex_data"
7810 functions. This change also alters the storage and management of global
7811 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
7812 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
7813 index counters. The API functions that use this state have been changed
7814 to take a "class_index" rather than pointers to the class's local STACK
7815 and counter, and there is now an API function to dynamically create new
7816 classes. This centralisation allows us to (a) plug a lot of the
7817 thread-safety problems that existed, and (b) makes it possible to clean
7818 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
7819 such data would previously have always leaked in application code and
7820 workarounds were in place to make the memory debugging turn a blind eye
7821 to it. Application code that doesn't use this new function will still
7822 leak as before, but their memory debugging output will announce it now
7823 rather than letting it slide.
7825 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
7826 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
7827 has a return value to indicate success or failure.
7830 *) Make it possible to replace the underlying "ERR" functions such that the
7831 global state (2 LHASH tables and 2 locks) is only used by the "default"
7832 implementation. This change also adds two functions to "get" and "set"
7833 the implementation prior to it being automatically set the first time
7834 any other ERR function takes place. Ie. an application can call "get",
7835 pass the return value to a module it has just loaded, and that module
7836 can call its own "set" function using that value. This means the
7837 module's "ERR" operations will use (and modify) the error state in the
7838 application and not in its own statically linked copy of OpenSSL code.
7841 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
7842 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
7843 the operation, and provides a more encapsulated way for external code
7844 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
7845 to use these functions rather than manually incrementing the counts.
7847 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
7850 *) Add EVP test program.
7853 *) Add symmetric cipher support to ENGINE. Expect the API to change!
7856 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
7857 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
7858 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
7859 These allow a CRL to be built without having to access X509_CRL fields
7860 directly. Modify 'ca' application to use new functions.
7863 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
7864 bug workarounds. Rollback attack detection is a security feature.
7865 The problem will only arise on OpenSSL servers when TLSv1 is not
7866 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
7867 Software authors not wanting to support TLSv1 will have special reasons
7868 for their choice and can explicitly enable this option.
7869 [Bodo Moeller, Lutz Jaenicke]
7871 *) Rationalise EVP so it can be extended: don't include a union of
7872 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
7873 (similar to those existing for EVP_CIPHER_CTX).
7878 EVP_MD_CTX_init(&md); /* new function call */
7879 EVP_DigestInit(&md, EVP_sha1());
7880 EVP_DigestUpdate(&md, in, len);
7881 EVP_DigestFinal(&md, out, NULL);
7882 EVP_MD_CTX_cleanup(&md); /* new function call */
7886 *) Make DES key schedule conform to the usual scheme, as well as
7887 correcting its structure. This means that calls to DES functions
7888 now have to pass a pointer to a des_key_schedule instead of a
7889 plain des_key_schedule (which was actually always a pointer
7892 des_key_schedule ks;
7894 des_set_key_checked(..., &ks);
7895 des_ncbc_encrypt(..., &ks, ...);
7897 (Note that a later change renames 'des_...' into 'DES_...'.)
7900 *) Initial reduction of linker bloat: the use of some functions, such as
7901 PEM causes large amounts of unused functions to be linked in due to
7902 poor organisation. For example pem_all.c contains every PEM function
7903 which has a knock on effect of linking in large amounts of (unused)
7904 ASN1 code. Grouping together similar functions and splitting unrelated
7905 functions prevents this.
7908 *) Cleanup of EVP macros.
7911 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
7912 correct _ecb suffix.
7915 *) Add initial OCSP responder support to ocsp application. The
7916 revocation information is handled using the text based index
7917 use by the ca application. The responder can either handle
7918 requests generated internally, supplied in files (for example
7919 via a CGI script) or using an internal minimal server.
7922 *) Add configuration choices to get zlib compression for TLS.
7925 *) Changes to Kerberos SSL for RFC 2712 compliance:
7926 1. Implemented real KerberosWrapper, instead of just using
7927 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
7928 2. Implemented optional authenticator field of KerberosWrapper.
7930 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
7931 and authenticator structs; see crypto/krb5/.
7933 Generalized Kerberos calls to support multiple Kerberos libraries.
7934 [Vern Staats <staatsvr@asc.hpc.mil>,
7935 Jeffrey Altman <jaltman@columbia.edu>
7936 via Richard Levitte]
7938 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
7939 already does with RSA. testdsa.h now has 'priv_key/pub_key'
7940 values for each of the key sizes rather than having just
7941 parameters (and 'speed' generating keys each time).
7944 *) Speed up EVP routines.
7947 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
7948 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
7949 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
7950 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
7952 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
7953 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
7954 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
7957 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
7959 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
7962 *) Added the OS2-EMX target.
7963 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
7965 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
7966 to support NCONF routines in extension code. New function CONF_set_nconf()
7967 to allow functions which take an NCONF to also handle the old LHASH
7968 structure: this means that the old CONF compatible routines can be
7969 retained (in particular wrt extensions) without having to duplicate the
7970 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
7973 *) Enhance the general user interface with mechanisms for inner control
7974 and with possibilities to have yes/no kind of prompts.
7977 *) Change all calls to low level digest routines in the library and
7978 applications to use EVP. Add missing calls to HMAC_cleanup() and
7979 don't assume HMAC_CTX can be copied using memcpy().
7980 [Verdon Walker <VWalker@novell.com>, Steve Henson]
7982 *) Add the possibility to control engines through control names but with
7983 arbitrary arguments instead of just a string.
7984 Change the key loaders to take a UI_METHOD instead of a callback
7985 function pointer. NOTE: this breaks binary compatibility with earlier
7986 versions of OpenSSL [engine].
7987 Adapt the nCipher code for these new conditions and add a card insertion
7991 *) Enhance the general user interface with mechanisms to better support
7992 dialog box interfaces, application-defined prompts, the possibility
7993 to use defaults (for example default passwords from somewhere else)
7994 and interrupts/cancellations.
7997 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
7998 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
8001 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
8002 tidy up some unnecessarily weird code in 'sk_new()').
8003 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
8005 *) Change the key loading routines for ENGINEs to use the same kind
8006 callback (pem_password_cb) as all other routines that need this
8010 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
8011 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
8012 than this minimum value is recommended.
8015 *) New random seeder for OpenVMS, using the system process statistics
8016 that are easily reachable.
8019 *) Windows apparently can't transparently handle global
8020 variables defined in DLLs. Initialisations such as:
8022 const ASN1_ITEM *it = &ASN1_INTEGER_it;
8024 won't compile. This is used by the any applications that need to
8025 declare their own ASN1 modules. This was fixed by adding the option
8026 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
8027 needed for static libraries under Win32.
8030 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
8031 setting of purpose and trust fields. New X509_STORE trust and
8032 purpose functions and tidy up setting in other SSL functions.
8035 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
8036 structure. These are inherited by X509_STORE_CTX when it is
8037 initialised. This allows various defaults to be set in the
8038 X509_STORE structure (such as flags for CRL checking and custom
8039 purpose or trust settings) for functions which only use X509_STORE_CTX
8040 internally such as S/MIME.
8042 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
8043 trust settings if they are not set in X509_STORE. This allows X509_STORE
8044 purposes and trust (in S/MIME for example) to override any set by default.
8046 Add command line options for CRL checking to smime, s_client and s_server
8050 *) Initial CRL based revocation checking. If the CRL checking flag(s)
8051 are set then the CRL is looked up in the X509_STORE structure and
8052 its validity and signature checked, then if the certificate is found
8053 in the CRL the verify fails with a revoked error.
8055 Various new CRL related callbacks added to X509_STORE_CTX structure.
8057 Command line options added to 'verify' application to support this.
8059 This needs some additional work, such as being able to handle multiple
8060 CRLs with different times, extension based lookup (rather than just
8061 by subject name) and ultimately more complete V2 CRL extension
8065 *) Add a general user interface API (crypto/ui/). This is designed
8066 to replace things like des_read_password and friends (backward
8067 compatibility functions using this new API are provided).
8068 The purpose is to remove prompting functions from the DES code
8069 section as well as provide for prompting through dialog boxes in
8070 a window system and the like.
8073 *) Add "ex_data" support to ENGINE so implementations can add state at a
8074 per-structure level rather than having to store it globally.
8077 *) Make it possible for ENGINE structures to be copied when retrieved by
8078 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
8079 This causes the "original" ENGINE structure to act like a template,
8080 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
8081 operational state can be localised to each ENGINE structure, despite the
8082 fact they all share the same "methods". New ENGINE structures returned in
8083 this case have no functional references and the return value is the single
8084 structural reference. This matches the single structural reference returned
8085 by ENGINE_by_id() normally, when it is incremented on the pre-existing
8089 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
8090 needs to match any other type at all we need to manually clear the
8094 *) Changes to the "openssl engine" utility to include;
8095 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
8096 about an ENGINE's available control commands.
8097 - executing control commands from command line arguments using the
8098 '-pre' and '-post' switches. '-post' is only used if '-t' is
8099 specified and the ENGINE is successfully initialised. The syntax for
8100 the individual commands are colon-separated, for example;
8101 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
8104 *) New dynamic control command support for ENGINEs. ENGINEs can now
8105 declare their own commands (numbers), names (strings), descriptions,
8106 and input types for run-time discovery by calling applications. A
8107 subset of these commands are implicitly classed as "executable"
8108 depending on their input type, and only these can be invoked through
8109 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
8110 can be based on user input, config files, etc). The distinction is
8111 that "executable" commands cannot return anything other than a boolean
8112 result and can only support numeric or string input, whereas some
8113 discoverable commands may only be for direct use through
8114 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
8115 pointers, or other custom uses. The "executable" commands are to
8116 support parameterisations of ENGINE behaviour that can be
8117 unambiguously defined by ENGINEs and used consistently across any
8118 OpenSSL-based application. Commands have been added to all the
8119 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
8120 control over shared-library paths without source code alterations.
8123 *) Changed all ENGINE implementations to dynamically allocate their
8124 ENGINEs rather than declaring them statically. Apart from this being
8125 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
8126 this also allows the implementations to compile without using the
8127 internal engine_int.h header.
8130 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
8131 'const' value. Any code that should be able to modify a RAND_METHOD
8132 should already have non-const pointers to it (ie. they should only
8133 modify their own ones).
8136 *) Made a variety of little tweaks to the ENGINE code.
8137 - "atalla" and "ubsec" string definitions were moved from header files
8138 to C code. "nuron" string definitions were placed in variables
8139 rather than hard-coded - allowing parameterisation of these values
8140 later on via ctrl() commands.
8141 - Removed unused "#if 0"'d code.
8142 - Fixed engine list iteration code so it uses ENGINE_free() to release
8143 structural references.
8144 - Constified the RAND_METHOD element of ENGINE structures.
8145 - Constified various get/set functions as appropriate and added
8146 missing functions (including a catch-all ENGINE_cpy that duplicates
8147 all ENGINE values onto a new ENGINE except reference counts/state).
8148 - Removed NULL parameter checks in get/set functions. Setting a method
8149 or function to NULL is a way of cancelling out a previously set
8150 value. Passing a NULL ENGINE parameter is just plain stupid anyway
8151 and doesn't justify the extra error symbols and code.
8152 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
8153 flags from engine_int.h to engine.h.
8154 - Changed prototypes for ENGINE handler functions (init(), finish(),
8155 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
8158 *) Implement binary inversion algorithm for BN_mod_inverse in addition
8159 to the algorithm using long division. The binary algorithm can be
8160 used only if the modulus is odd. On 32-bit systems, it is faster
8161 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
8162 roughly 5-15% for 256-bit moduli), so we use it only for moduli
8163 up to 450 bits. In 64-bit environments, the binary algorithm
8164 appears to be advantageous for much longer moduli; here we use it
8165 for moduli up to 2048 bits.
8168 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
8169 could not support the combine flag in choice fields.
8172 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
8173 extensions from a certificate request to the certificate.
8176 *) Allow multiple 'certopt' and 'nameopt' options to be separated
8177 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
8178 file: this allows the display of the certificate about to be
8179 signed to be customised, to allow certain fields to be included
8180 or excluded and extension details. The old system didn't display
8181 multicharacter strings properly, omitted fields not in the policy
8182 and couldn't display additional details such as extensions.
8185 *) Function EC_POINTs_mul for multiple scalar multiplication
8186 of an arbitrary number of elliptic curve points
8187 \sum scalars[i]*points[i],
8188 optionally including the generator defined for the EC_GROUP:
8189 scalar*generator + \sum scalars[i]*points[i].
8191 EC_POINT_mul is a simple wrapper function for the typical case
8192 that the point list has just one item (besides the optional
8196 *) First EC_METHODs for curves over GF(p):
8198 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
8199 operations and provides various method functions that can also
8200 operate with faster implementations of modular arithmetic.
8202 EC_GFp_mont_method() reuses most functions that are part of
8203 EC_GFp_simple_method, but uses Montgomery arithmetic.
8205 [Bodo Moeller; point addition and point doubling
8206 implementation directly derived from source code provided by
8207 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
8209 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
8210 crypto/ec/ec_lib.c):
8212 Curves are EC_GROUP objects (with an optional group generator)
8213 based on EC_METHODs that are built into the library.
8215 Points are EC_POINT objects based on EC_GROUP objects.
8217 Most of the framework would be able to handle curves over arbitrary
8218 finite fields, but as there are no obvious types for fields other
8219 than GF(p), some functions are limited to that for now.
8222 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
8223 that the file contains a complete HTTP response.
8226 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
8227 change the def and num file printf format specifier from "%-40sXXX"
8228 to "%-39s XXX". The latter will always guarantee a space after the
8229 field while the former will cause them to run together if the field
8230 is 40 of more characters long.
8233 *) Constify the cipher and digest 'method' functions and structures
8234 and modify related functions to take constant EVP_MD and EVP_CIPHER
8238 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
8239 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
8242 *) Modify EVP_Digest*() routines so they now return values. Although the
8243 internal software routines can never fail additional hardware versions
8247 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
8249 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
8250 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
8253 ERR_R_NESTED_ASN1_ERROR
8255 ERR_R_MISSING_ASN1_EOS
8256 were 4 .. 9, conflicting with
8257 ERR_LIB_RSA (= ERR_R_RSA_LIB)
8259 ERR_LIB_PEM (= ERR_R_PEM_LIB).
8260 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
8262 Add new error code 'ERR_R_INTERNAL_ERROR'.
8265 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
8269 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
8270 sets the subject name for a new request or supersedes the
8271 subject name in a given request. Formats that can be parsed are
8272 'CN=Some Name, OU=myOU, C=IT'
8274 'CN=Some Name/OU=myOU/C=IT'.
8276 Add options '-batch' and '-verbose' to 'openssl req'.
8277 [Massimiliano Pala <madwolf@hackmasters.net>]
8279 *) Introduce the possibility to access global variables through
8280 functions on platform were that's the best way to handle exporting
8281 global variables in shared libraries. To enable this functionality,
8282 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
8283 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
8284 is normally done by Configure or something similar).
8286 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
8287 in the source file (foo.c) like this:
8289 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
8290 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
8292 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
8293 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
8295 OPENSSL_DECLARE_GLOBAL(int,foo);
8296 #define foo OPENSSL_GLOBAL_REF(foo)
8297 OPENSSL_DECLARE_GLOBAL(double,bar);
8298 #define bar OPENSSL_GLOBAL_REF(bar)
8300 The #defines are very important, and therefore so is including the
8301 header file everywhere where the defined globals are used.
8303 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
8304 of ASN.1 items, but that structure is a bit different.
8306 The largest change is in util/mkdef.pl which has been enhanced with
8307 better and easier to understand logic to choose which symbols should
8308 go into the Windows .def files as well as a number of fixes and code
8309 cleanup (among others, algorithm keywords are now sorted
8310 lexicographically to avoid constant rewrites).
8313 *) In BN_div() keep a copy of the sign of 'num' before writing the
8314 result to 'rm' because if rm==num the value will be overwritten
8315 and produce the wrong result if 'num' is negative: this caused
8316 problems with BN_mod() and BN_nnmod().
8319 *) Function OCSP_request_verify(). This checks the signature on an
8320 OCSP request and verifies the signer certificate. The signer
8321 certificate is just checked for a generic purpose and OCSP request
8325 *) Add OCSP_check_validity() function to check the validity of OCSP
8326 responses. OCSP responses are prepared in real time and may only
8327 be a few seconds old. Simply checking that the current time lies
8328 between thisUpdate and nextUpdate max reject otherwise valid responses
8329 caused by either OCSP responder or client clock inaccuracy. Instead
8330 we allow thisUpdate and nextUpdate to fall within a certain period of
8331 the current time. The age of the response can also optionally be
8332 checked. Two new options -validity_period and -status_age added to
8336 *) If signature or public key algorithm is unrecognized print out its
8337 OID rather that just UNKNOWN.
8340 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
8341 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
8342 ID to be generated from the issuer certificate alone which can then be
8343 passed to OCSP_id_issuer_cmp().
8346 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
8347 ASN1 modules to export functions returning ASN1_ITEM pointers
8348 instead of the ASN1_ITEM structures themselves. This adds several
8349 new macros which allow the underlying ASN1 function/structure to
8350 be accessed transparently. As a result code should not use ASN1_ITEM
8351 references directly (such as &X509_it) but instead use the relevant
8352 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
8353 use of the new ASN1 code on platforms where exporting structures
8354 is problematical (for example in shared libraries) but exporting
8355 functions returning pointers to structures is not.
8358 *) Add support for overriding the generation of SSL/TLS session IDs.
8359 These callbacks can be registered either in an SSL_CTX or per SSL.
8360 The purpose of this is to allow applications to control, if they wish,
8361 the arbitrary values chosen for use as session IDs, particularly as it
8362 can be useful for session caching in multiple-server environments. A
8363 command-line switch for testing this (and any client code that wishes
8364 to use such a feature) has been added to "s_server".
8365 [Geoff Thorpe, Lutz Jaenicke]
8367 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
8368 of the form '#if defined(...) || defined(...) || ...' and
8369 '#if !defined(...) && !defined(...) && ...'. This also avoids
8370 the growing number of special cases it was previously handling.
8373 *) Make all configuration macros available for application by making
8374 sure they are available in opensslconf.h, by giving them names starting
8375 with "OPENSSL_" to avoid conflicts with other packages and by making
8376 sure e_os2.h will cover all platform-specific cases together with
8378 Additionally, it is now possible to define configuration/platform-
8379 specific names (called "system identities"). In the C code, these
8380 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
8381 macro with the name beginning with "OPENSSL_SYS_", which is determined
8382 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
8386 *) New option -set_serial to 'req' and 'x509' this allows the serial
8387 number to use to be specified on the command line. Previously self
8388 signed certificates were hard coded with serial number 0 and the
8389 CA options of 'x509' had to use a serial number in a file which was
8393 *) New options to 'ca' utility to support V2 CRL entry extensions.
8394 Currently CRL reason, invalidity date and hold instruction are
8395 supported. Add new CRL extensions to V3 code and some new objects.
8398 *) New function EVP_CIPHER_CTX_set_padding() this is used to
8399 disable standard block padding (aka PKCS#5 padding) in the EVP
8400 API, which was previously mandatory. This means that the data is
8401 not padded in any way and so the total length much be a multiple
8402 of the block size, otherwise an error occurs.
8405 *) Initial (incomplete) OCSP SSL support.
8408 *) New function OCSP_parse_url(). This splits up a URL into its host,
8409 port and path components: primarily to parse OCSP URLs. New -url
8410 option to ocsp utility.
8413 *) New nonce behavior. The return value of OCSP_check_nonce() now
8414 reflects the various checks performed. Applications can decide
8415 whether to tolerate certain situations such as an absent nonce
8416 in a response when one was present in a request: the ocsp application
8417 just prints out a warning. New function OCSP_add1_basic_nonce()
8418 this is to allow responders to include a nonce in a response even if
8419 the request is nonce-less.
8422 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
8423 skipped when using openssl x509 multiple times on a single input file,
8424 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
8427 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
8428 set string type: to handle setting ASN1_TIME structures. Fix ca
8429 utility to correctly initialize revocation date of CRLs.
8432 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
8433 the clients preferred ciphersuites and rather use its own preferences.
8434 Should help to work around M$ SGC (Server Gated Cryptography) bug in
8435 Internet Explorer by ensuring unchanged hash method during stepup.
8436 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
8439 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
8440 to aes and add a new 'exist' option to print out symbols that don't
8444 *) Additional options to ocsp utility to allow flags to be set and
8445 additional certificates supplied.
8448 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
8449 OCSP client a number of certificate to only verify the response
8453 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
8454 handle the new API. Currently only ECB, CBC modes supported. Add new
8457 Add TLS AES ciphersuites as described in RFC3268, "Advanced
8458 Encryption Standard (AES) Ciphersuites for Transport Layer
8459 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
8460 not enabled by default and were not part of the "ALL" ciphersuite
8461 alias because they were not yet official; they could be
8462 explicitly requested by specifying the "AESdraft" ciphersuite
8463 group alias. In the final release of OpenSSL 0.9.7, the group
8464 alias is called "AES" and is part of "ALL".)
8465 [Ben Laurie, Steve Henson, Bodo Moeller]
8467 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
8468 request to response.
8471 *) Functions for OCSP responders. OCSP_request_onereq_count(),
8472 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
8473 extract information from a certificate request. OCSP_response_create()
8474 creates a response and optionally adds a basic response structure.
8475 OCSP_basic_add1_status() adds a complete single response to a basic
8476 response and returns the OCSP_SINGLERESP structure just added (to allow
8477 extensions to be included for example). OCSP_basic_add1_cert() adds a
8478 certificate to a basic response and OCSP_basic_sign() signs a basic
8479 response with various flags. New helper functions ASN1_TIME_check()
8480 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
8481 (converts ASN1_TIME to GeneralizedTime).
8484 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
8485 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
8486 structure from a certificate. X509_pubkey_digest() digests the public_key
8487 contents: this is used in various key identifiers.
8490 *) Make sk_sort() tolerate a NULL argument.
8491 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
8493 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
8494 passed by the function are trusted implicitly. If any of them signed the
8495 response then it is assumed to be valid and is not verified.
8498 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
8499 to data. This was previously part of the PKCS7 ASN1 code. This
8500 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
8501 [Steve Henson, reported by Kenneth R. Robinette
8502 <support@securenetterm.com>]
8504 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
8505 routines: without these tracing memory leaks is very painful.
8506 Fix leaks in PKCS12 and PKCS7 routines.
8509 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
8510 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
8511 effectively meant GeneralizedTime would never be used. Now it
8512 is initialised to -1 but X509_time_adj() now has to check the value
8513 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
8514 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
8515 [Steve Henson, reported by Kenneth R. Robinette
8516 <support@securenetterm.com>]
8518 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
8519 result in a zero length in the ASN1_INTEGER structure which was
8520 not consistent with the structure when d2i_ASN1_INTEGER() was used
8521 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
8522 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
8523 where it did not print out a minus for negative ASN1_INTEGER.
8526 *) Add summary printout to ocsp utility. The various functions which
8527 convert status values to strings have been renamed to:
8528 OCSP_response_status_str(), OCSP_cert_status_str() and
8529 OCSP_crl_reason_str() and are no longer static. New options
8530 to verify nonce values and to disable verification. OCSP response
8531 printout format cleaned up.
8534 *) Add additional OCSP certificate checks. These are those specified
8535 in RFC2560. This consists of two separate checks: the CA of the
8536 certificate being checked must either be the OCSP signer certificate
8537 or the issuer of the OCSP signer certificate. In the latter case the
8538 OCSP signer certificate must contain the OCSP signing extended key
8539 usage. This check is performed by attempting to match the OCSP
8540 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
8541 in the OCSP_CERTID structures of the response.
8544 *) Initial OCSP certificate verification added to OCSP_basic_verify()
8545 and related routines. This uses the standard OpenSSL certificate
8546 verify routines to perform initial checks (just CA validity) and
8547 to obtain the certificate chain. Then additional checks will be
8548 performed on the chain. Currently the root CA is checked to see
8549 if it is explicitly trusted for OCSP signing. This is used to set
8550 a root CA as a global signing root: that is any certificate that
8551 chains to that CA is an acceptable OCSP signing certificate.
8554 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
8555 extensions from a separate configuration file.
8556 As when reading extensions from the main configuration file,
8557 the '-extensions ...' option may be used for specifying the
8559 [Massimiliano Pala <madwolf@comune.modena.it>]
8561 *) New OCSP utility. Allows OCSP requests to be generated or
8562 read. The request can be sent to a responder and the output
8563 parsed, outputed or printed in text form. Not complete yet:
8564 still needs to check the OCSP response validity.
8567 *) New subcommands for 'openssl ca':
8568 'openssl ca -status <serial>' prints the status of the cert with
8569 the given serial number (according to the index file).
8570 'openssl ca -updatedb' updates the expiry status of certificates
8572 [Massimiliano Pala <madwolf@comune.modena.it>]
8574 *) New '-newreq-nodes' command option to CA.pl. This is like
8575 '-newreq', but calls 'openssl req' with the '-nodes' option
8576 so that the resulting key is not encrypted.
8577 [Damien Miller <djm@mindrot.org>]
8579 *) New configuration for the GNU Hurd.
8580 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
8582 *) Initial code to implement OCSP basic response verify. This
8583 is currently incomplete. Currently just finds the signer's
8584 certificate and verifies the signature on the response.
8587 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
8588 value of OPENSSLDIR. This is available via the new '-d' option
8589 to 'openssl version', and is also included in 'openssl version -a'.
8592 *) Allowing defining memory allocation callbacks that will be given
8593 file name and line number information in additional arguments
8594 (a const char* and an int). The basic functionality remains, as
8595 well as the original possibility to just replace malloc(),
8596 realloc() and free() by functions that do not know about these
8597 additional arguments. To register and find out the current
8598 settings for extended allocation functions, the following
8599 functions are provided:
8601 CRYPTO_set_mem_ex_functions
8602 CRYPTO_set_locked_mem_ex_functions
8603 CRYPTO_get_mem_ex_functions
8604 CRYPTO_get_locked_mem_ex_functions
8606 These work the same way as CRYPTO_set_mem_functions and friends.
8607 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
8608 extended allocation function is enabled.
8609 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
8610 a conventional allocation function is enabled.
8611 [Richard Levitte, Bodo Moeller]
8613 *) Finish off removing the remaining LHASH function pointer casts.
8614 There should no longer be any prototype-casting required when using
8615 the LHASH abstraction, and any casts that remain are "bugs". See
8616 the callback types and macros at the head of lhash.h for details
8617 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
8620 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
8621 If /dev/[u]random devices are not available or do not return enough
8622 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
8624 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
8625 /etc/entropy will be queried once each in this sequence, querying stops
8626 when enough entropy was collected without querying more sockets.
8629 *) Change the Unix RAND_poll() variant to be able to poll several
8630 random devices, as specified by DEVRANDOM, until a sufficient amount
8631 of data has been collected. We spend at most 10 ms on each file
8632 (select timeout) and read in non-blocking mode. DEVRANDOM now
8633 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
8634 (previously it was just the string "/dev/urandom"), so on typical
8635 platforms the 10 ms delay will never occur.
8636 Also separate out the Unix variant to its own file, rand_unix.c.
8637 For VMS, there's a currently-empty rand_vms.c.
8640 *) Move OCSP client related routines to ocsp_cl.c. These
8641 provide utility functions which an application needing
8642 to issue a request to an OCSP responder and analyse the
8643 response will typically need: as opposed to those which an
8644 OCSP responder itself would need which will be added later.
8646 OCSP_request_sign() signs an OCSP request with an API similar
8647 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
8648 response. OCSP_response_get1_basic() extracts basic response
8649 from response. OCSP_resp_find_status(): finds and extracts status
8650 information from an OCSP_CERTID structure (which will be created
8651 when the request structure is built). These are built from lower
8652 level functions which work on OCSP_SINGLERESP structures but
8653 won't normally be used unless the application wishes to examine
8654 extensions in the OCSP response for example.
8656 Replace nonce routines with a pair of functions.
8657 OCSP_request_add1_nonce() adds a nonce value and optionally
8658 generates a random value. OCSP_check_nonce() checks the
8659 validity of the nonce in an OCSP response.
8662 *) Change function OCSP_request_add() to OCSP_request_add0_id().
8663 This doesn't copy the supplied OCSP_CERTID and avoids the
8664 need to free up the newly created id. Change return type
8665 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
8666 This can then be used to add extensions to the request.
8667 Deleted OCSP_request_new(), since most of its functionality
8668 is now in OCSP_REQUEST_new() (and the case insensitive name
8669 clash) apart from the ability to set the request name which
8670 will be added elsewhere.
8673 *) Update OCSP API. Remove obsolete extensions argument from
8674 various functions. Extensions are now handled using the new
8675 OCSP extension code. New simple OCSP HTTP function which
8676 can be used to send requests and parse the response.
8679 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
8680 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
8681 uses the special reorder version of SET OF to sort the attributes
8682 and reorder them to match the encoded order. This resolves a long
8683 standing problem: a verify on a PKCS7 structure just after signing
8684 it used to fail because the attribute order did not match the
8685 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
8686 it uses the received order. This is necessary to tolerate some broken
8687 software that does not order SET OF. This is handled by encoding
8688 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
8689 to produce the required SET OF.
8692 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
8693 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
8694 files to get correct declarations of the ASN.1 item variables.
8697 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
8698 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
8699 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
8700 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
8701 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
8702 ASN1_ITEM and no wrapper functions.
8705 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
8706 replace the old function pointer based I/O routines. Change most of
8707 the *_d2i_bio() and *_d2i_fp() functions to use these.
8710 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
8711 lines, recognize more "algorithms" that can be deselected, and make
8712 it complain about algorithm deselection that isn't recognised.
8715 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
8716 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
8717 to use new functions. Add NO_ASN1_OLD which can be set to remove
8718 some old style ASN1 functions: this can be used to determine if old
8719 code will still work when these eventually go away.
8722 *) New extension functions for OCSP structures, these follow the
8723 same conventions as certificates and CRLs.
8726 *) New function X509V3_add1_i2d(). This automatically encodes and
8727 adds an extension. Its behaviour can be customised with various
8728 flags to append, replace or delete. Various wrappers added for
8729 certificates and CRLs.
8732 *) Fix to avoid calling the underlying ASN1 print routine when
8733 an extension cannot be parsed. Correct a typo in the
8734 OCSP_SERVICELOC extension. Tidy up print OCSP format.
8737 *) Make mkdef.pl parse some of the ASN1 macros and add appropriate
8738 entries for variables.
8741 *) Add functionality to apps/openssl.c for detecting locking
8742 problems: As the program is single-threaded, all we have
8743 to do is register a locking callback using an array for
8744 storing which locks are currently held by the program.
8747 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
8748 SSL_get_ex_data_X509_STORE_idx(), which is used in
8749 ssl_verify_cert_chain() and thus can be called at any time
8750 during TLS/SSL handshakes so that thread-safety is essential.
8751 Unfortunately, the ex_data design is not at all suited
8752 for multi-threaded use, so it probably should be abolished.
8755 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
8756 [Broadcom, tweaked and integrated by Geoff Thorpe]
8758 *) Move common extension printing code to new function
8759 X509V3_print_extensions(). Reorganise OCSP print routines and
8760 implement some needed OCSP ASN1 functions. Add OCSP extensions.
8763 *) New function X509_signature_print() to remove duplication in some
8767 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
8768 set (this was treated exactly the same as SET OF previously). This
8769 is used to reorder the STACK representing the structure to match the
8770 encoding. This will be used to get round a problem where a PKCS7
8771 structure which was signed could not be verified because the STACK
8772 order did not reflect the encoded order.
8775 *) Reimplement the OCSP ASN1 module using the new code.
8778 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
8779 for its ASN1 operations. The old style function pointers still exist
8780 for now but they will eventually go away.
8783 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
8784 completely replaces the old ASN1 functionality with a table driven
8785 encoder and decoder which interprets an ASN1_ITEM structure describing
8786 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
8787 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
8788 has also been converted to the new form.
8791 *) Change BN_mod_exp_recp so that negative moduli are tolerated
8792 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
8793 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
8794 for negative moduli.
8797 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
8798 of not touching the result's sign bit.
8801 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
8805 *) Changed the LHASH code to use prototypes for callbacks, and created
8806 macros to declare and implement thin (optionally static) functions
8807 that provide type-safety and avoid function pointer casting for the
8808 type-specific callbacks.
8811 *) Added Kerberos Cipher Suites to be used with TLS, as written in
8813 [Veers Staats <staatsvr@asc.hpc.mil>,
8814 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
8816 *) Reformat the FAQ so the different questions and answers can be divided
8817 in sections depending on the subject.
8820 *) Have the zlib compression code load ZLIB.DLL dynamically under
8824 *) New function BN_mod_sqrt for computing square roots modulo a prime
8825 (using the probabilistic Tonelli-Shanks algorithm unless
8826 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
8827 be handled deterministically).
8828 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
8830 *) Make BN_mod_inverse faster by explicitly handling small quotients
8831 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
8832 512 bits], about 30% for larger ones [1024 or 2048 bits].)
8835 *) New function BN_kronecker.
8838 *) Fix BN_gcd so that it works on negative inputs; the result is
8839 positive unless both parameters are zero.
8840 Previously something reasonably close to an infinite loop was
8841 possible because numbers could be growing instead of shrinking
8842 in the implementation of Euclid's algorithm.
8845 *) Fix BN_is_word() and BN_is_one() macros to take into account the
8846 sign of the number in question.
8848 Fix BN_is_word(a,w) to work correctly for w == 0.
8850 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
8851 because its test if the absolute value of 'a' equals 'w'.
8852 Note that BN_abs_is_word does *not* handle w == 0 reliably;
8853 it exists mostly for use in the implementations of BN_is_zero(),
8854 BN_is_one(), and BN_is_word().
8857 *) New function BN_swap.
8860 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
8861 the exponentiation functions are more likely to produce reasonable
8862 results on negative inputs.
8865 *) Change BN_mod_mul so that the result is always non-negative.
8866 Previously, it could be negative if one of the factors was negative;
8867 I don't think anyone really wanted that behaviour.
8870 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
8871 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
8872 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
8873 and add new functions:
8882 BN_mod_lshift1_quick
8886 These functions always generate non-negative results.
8888 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
8889 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
8891 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
8892 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
8893 be reduced modulo m.
8894 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
8897 The following entry accidentally appeared in the CHANGES file
8898 distributed with OpenSSL 0.9.7. The modifications described in
8899 it do *not* apply to OpenSSL 0.9.7.
8901 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
8902 was actually never needed) and in BN_mul(). The removal in BN_mul()
8903 required a small change in bn_mul_part_recursive() and the addition
8904 of the functions bn_cmp_part_words(), bn_sub_part_words() and
8905 bn_add_part_words(), which do the same thing as bn_cmp_words(),
8906 bn_sub_words() and bn_add_words() except they take arrays with
8911 *) In 'openssl passwd', verify passwords read from the terminal
8912 unless the '-salt' option is used (which usually means that
8913 verification would just waste user's time since the resulting
8914 hash is going to be compared with some given password hash)
8915 or the new '-noverify' option is used.
8917 This is an incompatible change, but it does not affect
8918 non-interactive use of 'openssl passwd' (passwords on the command
8919 line, '-stdin' option, '-in ...' option) and thus should not
8923 *) Remove all references to RSAref, since there's no more need for it.
8926 *) Make DSO load along a path given through an environment variable
8927 (SHLIB_PATH) with shl_load().
8930 *) Constify the ENGINE code as a result of BIGNUM constification.
8931 Also constify the RSA code and most things related to it. In a
8932 few places, most notable in the depth of the ASN.1 code, ugly
8933 casts back to non-const were required (to be solved at a later
8937 *) Make it so the openssl application has all engines loaded by default.
8940 *) Constify the BIGNUM routines a little more.
8943 *) Add the following functions:
8945 ENGINE_load_cswift()
8947 ENGINE_load_atalla()
8949 ENGINE_load_builtin_engines()
8951 That way, an application can itself choose if external engines that
8952 are built-in in OpenSSL shall ever be used or not. The benefit is
8953 that applications won't have to be linked with libdl or other dso
8954 libraries unless it's really needed.
8956 Changed 'openssl engine' to load all engines on demand.
8957 Changed the engine header files to avoid the duplication of some
8958 declarations (they differed!).
8961 *) 'openssl engine' can now list capabilities.
8964 *) Better error reporting in 'openssl engine'.
8967 *) Never call load_dh_param(NULL) in s_server.
8970 *) Add engine application. It can currently list engines by name and
8971 identity, and test if they are actually available.
8974 *) Improve RPM specification file by forcing symbolic linking and making
8975 sure the installed documentation is also owned by root.root.
8976 [Damien Miller <djm@mindrot.org>]
8978 *) Give the OpenSSL applications more possibilities to make use of
8979 keys (public as well as private) handled by engines.
8982 *) Add OCSP code that comes from CertCo.
8985 *) Add VMS support for the Rijndael code.
8988 *) Added untested support for Nuron crypto accelerator.
8991 *) Add support for external cryptographic devices. This code was
8992 previously distributed separately as the "engine" branch.
8993 [Geoff Thorpe, Richard Levitte]
8995 *) Rework the filename-translation in the DSO code. It is now possible to
8996 have far greater control over how a "name" is turned into a filename
8997 depending on the operating environment and any oddities about the
8998 different shared library filenames on each system.
9001 *) Support threads on FreeBSD-elf in Configure.
9004 *) Fix for SHA1 assembly problem with MASM: it produces
9005 warnings about corrupt line number information when assembling
9006 with debugging information. This is caused by the overlapping
9008 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
9011 NCONF_get_number() has no error checking at all. As a replacement,
9012 NCONF_get_number_e() is defined (_e for "error checking") and is
9013 promoted strongly. The old NCONF_get_number is kept around for
9014 binary backward compatibility.
9015 Make it possible for methods to load from something other than a BIO,
9016 by providing a function pointer that is given a name instead of a BIO.
9017 For example, this could be used to load configuration data from an
9021 *) Fix for non blocking accept BIOs. Added new I/O special reason
9022 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
9023 with non blocking I/O was not possible because no retry code was
9024 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
9028 *) Added the beginnings of Rijndael support.
9031 *) Fix for bug in DirectoryString mask setting. Add support for
9032 X509_NAME_print_ex() in 'req' and X509_print_ex() function
9033 to allow certificate printing to more controllable, additional
9034 'certopt' option to 'x509' to allow new printing options to be
9038 *) Clean old EAY MD5 hack from e_os.h.
9041 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
9043 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
9044 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
9045 [Joe Orton, Steve Henson]
9047 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
9049 *) Fix additional bug revealed by the NISCC test suite:
9051 Stop bug triggering large recursion when presented with
9052 certain ASN.1 tags (CVE-2003-0851)
9055 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
9057 *) Fix various bugs revealed by running the NISCC test suite:
9059 Stop out of bounds reads in the ASN1 code when presented with
9060 invalid tags (CVE-2003-0543 and CVE-2003-0544).
9062 If verify callback ignores invalid public key errors don't try to check
9063 certificate signature with the NULL public key.
9067 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
9068 if the server requested one: as stated in TLS 1.0 and SSL 3.0
9072 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
9073 extra data after the compression methods not only for TLS 1.0
9074 but also for SSL 3.0 (as required by the specification).
9075 [Bodo Moeller; problem pointed out by Matthias Loepfe]
9077 *) Change X509_certificate_type() to mark the key as exported/exportable
9078 when it's 512 *bits* long, not 512 bytes.
9081 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
9083 *) Countermeasure against the Klima-Pokorny-Rosa extension of
9084 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
9085 a protocol version number mismatch like a decryption error
9086 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
9089 *) Turn on RSA blinding by default in the default implementation
9090 to avoid a timing attack. Applications that don't want it can call
9091 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
9092 They would be ill-advised to do so in most cases.
9093 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
9095 *) Change RSA blinding code so that it works when the PRNG is not
9096 seeded (in this case, the secret RSA exponent is abused as
9097 an unpredictable seed -- if it is not unpredictable, there
9098 is no point in blinding anyway). Make RSA blinding thread-safe
9099 by remembering the creator's thread ID in rsa->blinding and
9100 having all other threads use local one-time blinding factors
9101 (this requires more computation than sharing rsa->blinding, but
9102 avoids excessive locking; and if an RSA object is not shared
9103 between threads, blinding will still be very fast).
9106 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
9108 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
9109 via timing by performing a MAC computation even if incorrect
9110 block cipher padding has been found. This is a countermeasure
9111 against active attacks where the attacker has to distinguish
9112 between bad padding and a MAC verification error. (CVE-2003-0078)
9114 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
9115 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
9116 Martin Vuagnoux (EPFL, Ilion)]
9118 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
9120 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
9121 memory from its contents. This is done with a counter that will
9122 place alternating values in each byte. This can be used to solve
9123 two issues: 1) the removal of calls to memset() by highly optimizing
9124 compilers, and 2) cleansing with other values than 0, since those can
9125 be read through on certain media, for example a swap space on disk.
9128 *) Bugfix: client side session caching did not work with external caching,
9129 because the session->cipher setting was not restored when reloading
9130 from the external cache. This problem was masked, when
9131 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
9132 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
9135 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
9136 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
9137 [Zeev Lieber <zeev-l@yahoo.com>]
9139 *) Undo an undocumented change introduced in 0.9.6e which caused
9140 repeated calls to OpenSSL_add_all_ciphers() and
9141 OpenSSL_add_all_digests() to be ignored, even after calling
9145 *) Change the default configuration reader to deal with last line not
9146 being properly terminated.
9149 *) Change X509_NAME_cmp() so it applies the special rules on handling
9150 DN values that are of type PrintableString, as well as RDNs of type
9151 emailAddress where the value has the type ia5String.
9152 [stefank@valicert.com via Richard Levitte]
9154 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
9155 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
9156 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
9157 the bitwise-OR of the two for use by the majority of applications
9158 wanting this behaviour, and update the docs. The documented
9159 behaviour and actual behaviour were inconsistent and had been
9160 changing anyway, so this is more a bug-fix than a behavioural
9162 [Geoff Thorpe, diagnosed by Nadav Har'El]
9164 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
9165 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
9168 *) Fix initialization code race conditions in
9169 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
9170 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
9171 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
9172 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
9173 ssl2_get_cipher_by_char(),
9174 ssl3_get_cipher_by_char().
9175 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
9177 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
9178 the cached sessions are flushed, as the remove_cb() might use ex_data
9179 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
9180 (see [openssl.org #212]).
9181 [Geoff Thorpe, Lutz Jaenicke]
9183 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
9184 length, instead of the encoding length to d2i_ASN1_OBJECT.
9187 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
9189 *) [In 0.9.6g-engine release:]
9190 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
9191 [Lynn Gazis <lgazis@rainbow.com>]
9193 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
9195 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
9196 and get fix the header length calculation.
9197 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
9198 Alon Kantor <alonk@checkpoint.com> (and others),
9201 *) Use proper error handling instead of 'assertions' in buffer
9202 overflow checks added in 0.9.6e. This prevents DoS (the
9203 assertions could call abort()).
9204 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
9206 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
9208 *) Add various sanity checks to asn1_get_length() to reject
9209 the ASN1 length bytes if they exceed sizeof(long), will appear
9210 negative or the content length exceeds the length of the
9212 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
9214 *) Fix cipher selection routines: ciphers without encryption had no flags
9215 for the cipher strength set and where therefore not handled correctly
9216 by the selection routines (PR #130).
9219 *) Fix EVP_dsa_sha macro.
9223 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
9224 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
9225 that was added in OpenSSL 0.9.6d.
9227 As the countermeasure turned out to be incompatible with some
9228 broken SSL implementations, the new option is part of SSL_OP_ALL.
9229 SSL_OP_ALL is usually employed when compatibility with weird SSL
9230 implementations is desired (e.g. '-bugs' option to 's_client' and
9231 's_server'), so the new option is automatically set in many
9235 *) Changes in security patch:
9237 Changes marked "(CHATS)" were sponsored by the Defense Advanced
9238 Research Projects Agency (DARPA) and Air Force Research Laboratory,
9239 Air Force Materiel Command, USAF, under agreement number
9242 *) Add various sanity checks to asn1_get_length() to reject
9243 the ASN1 length bytes if they exceed sizeof(long), will appear
9244 negative or the content length exceeds the length of the
9245 supplied buffer. (CVE-2002-0659)
9246 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
9248 *) Assertions for various potential buffer overflows, not known to
9250 [Ben Laurie (CHATS)]
9252 *) Various temporary buffers to hold ASCII versions of integers were
9253 too small for 64 bit platforms. (CVE-2002-0655)
9254 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
9256 *) Remote buffer overflow in SSL3 protocol - an attacker could
9257 supply an oversized session ID to a client. (CVE-2002-0656)
9258 [Ben Laurie (CHATS)]
9260 *) Remote buffer overflow in SSL2 protocol - an attacker could
9261 supply an oversized client master key. (CVE-2002-0656)
9262 [Ben Laurie (CHATS)]
9264 Changes between 0.9.6c and 0.9.6d [9 May 2002]
9266 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
9267 encoded as NULL) with id-dsa-with-sha1.
9268 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
9270 *) Check various X509_...() return values in apps/req.c.
9271 [Nils Larsch <nla@trustcenter.de>]
9273 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
9274 an end-of-file condition would erroneously be flagged, when the CRLF
9275 was just at the end of a processed block. The bug was discovered when
9276 processing data through a buffering memory BIO handing the data to a
9277 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
9278 <ptsekov@syntrex.com> and Nedelcho Stanev.
9281 *) Implement a countermeasure against a vulnerability recently found
9282 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
9283 before application data chunks to avoid the use of known IVs
9284 with data potentially chosen by the attacker.
9287 *) Fix length checks in ssl3_get_client_hello().
9290 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
9291 to prevent ssl3_read_internal() from incorrectly assuming that
9292 ssl3_read_bytes() found application data while handshake
9293 processing was enabled when in fact s->s3->in_read_app_data was
9294 merely automatically cleared during the initial handshake.
9295 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
9297 *) Fix object definitions for Private and Enterprise: they were not
9298 recognized in their shortname (=lowercase) representation. Extend
9299 obj_dat.pl to issue an error when using undefined keywords instead
9300 of silently ignoring the problem (Svenning Sorensen
9301 <sss@sss.dnsalias.net>).
9304 *) Fix DH_generate_parameters() so that it works for 'non-standard'
9305 generators, i.e. generators other than 2 and 5. (Previously, the
9306 code did not properly initialise the 'add' and 'rem' values to
9307 BN_generate_prime().)
9309 In the new general case, we do not insist that 'generator' is
9310 actually a primitive root: This requirement is rather pointless;
9311 a generator of the order-q subgroup is just as good, if not
9315 *) Map new X509 verification errors to alerts. Discovered and submitted by
9316 Tom Wu <tom@arcot.com>.
9319 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
9320 returning non-zero before the data has been completely received
9321 when using non-blocking I/O.
9322 [Bodo Moeller; problem pointed out by John Hughes]
9324 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
9325 [Ben Laurie, Lutz Jaenicke]
9327 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
9328 Yoram Zahavi <YoramZ@gilian.com>).
9331 *) Add information about CygWin 1.3 and on, and preserve proper
9332 configuration for the versions before that.
9333 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
9335 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
9336 check whether we deal with a copy of a session and do not delete from
9337 the cache in this case. Problem reported by "Izhar Shoshani Levi"
9338 <izhar@checkpoint.com>.
9341 *) Do not store session data into the internal session cache, if it
9342 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
9343 flag is set). Proposed by Aslam <aslam@funk.com>.
9346 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
9350 *) [In 0.9.6d-engine release:]
9351 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
9352 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
9354 *) Add the configuration target linux-s390x.
9355 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
9357 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
9358 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
9359 variable as an indication that a ClientHello message has been
9360 received. As the flag value will be lost between multiple
9361 invocations of ssl3_accept when using non-blocking I/O, the
9362 function may not be aware that a handshake has actually taken
9363 place, thus preventing a new session from being added to the
9366 To avoid this problem, we now set s->new_session to 2 instead of
9367 using a local variable.
9368 [Lutz Jaenicke, Bodo Moeller]
9370 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
9371 if the SSL_R_LENGTH_MISMATCH error is detected.
9372 [Geoff Thorpe, Bodo Moeller]
9374 *) New 'shared_ldflag' column in Configure platform table.
9377 *) Fix EVP_CIPHER_mode macro.
9378 ["Dan S. Camper" <dan@bti.net>]
9380 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
9381 type, we must throw them away by setting rr->length to 0.
9382 [D P Chang <dpc@qualys.com>]
9384 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
9386 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
9387 <Dominikus.Scherkl@biodata.com>. (The previous implementation
9388 worked incorrectly for those cases where range = 10..._2 and
9389 3*range is two bits longer than range.)
9392 *) Only add signing time to PKCS7 structures if it is not already
9396 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
9397 OBJ_ld_ce should be OBJ_id_ce.
9398 Also some ip-pda OIDs in crypto/objects/objects.txt were
9399 incorrect (cf. RFC 3039).
9400 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
9402 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
9403 returns early because it has nothing to do.
9404 [Andy Schneider <andy.schneider@bjss.co.uk>]
9406 *) [In 0.9.6c-engine release:]
9407 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
9408 [Andy Schneider <andy.schneider@bjss.co.uk>]
9410 *) [In 0.9.6c-engine release:]
9411 Add support for Cryptographic Appliance's keyserver technology.
9412 (Use engine 'keyclient')
9413 [Cryptographic Appliances and Geoff Thorpe]
9415 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
9416 is called via tools/c89.sh because arguments have to be
9417 rearranged (all '-L' options must appear before the first object
9419 [Richard Shapiro <rshapiro@abinitio.com>]
9421 *) [In 0.9.6c-engine release:]
9422 Add support for Broadcom crypto accelerator cards, backported
9424 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
9426 *) [In 0.9.6c-engine release:]
9427 Add support for SureWare crypto accelerator cards from
9428 Baltimore Technologies. (Use engine 'sureware')
9429 [Baltimore Technologies and Mark Cox]
9431 *) [In 0.9.6c-engine release:]
9432 Add support for crypto accelerator cards from Accelerated
9433 Encryption Processing, www.aep.ie. (Use engine 'aep')
9434 [AEP Inc. and Mark Cox]
9436 *) Add a configuration entry for gcc on UnixWare.
9437 [Gary Benson <gbenson@redhat.com>]
9439 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
9440 messages are stored in a single piece (fixed-length part and
9441 variable-length part combined) and fix various bugs found on the way.
9444 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
9445 instead. BIO_gethostbyname() does not know what timeouts are
9446 appropriate, so entries would stay in cache even when they have
9448 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
9450 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
9451 faced with a pathologically small ClientHello fragment that does
9452 not contain client_version: Instead of aborting with an error,
9453 simply choose the highest available protocol version (i.e.,
9454 TLS 1.0 unless it is disabled). In practice, ClientHello
9455 messages are never sent like this, but this change gives us
9456 strictly correct behaviour at least for TLS.
9459 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
9460 never resets s->method to s->ctx->method when called from within
9461 one of the SSL handshake functions.
9462 [Bodo Moeller; problem pointed out by Niko Baric]
9464 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
9465 (sent using the client's version number) if client_version is
9466 smaller than the protocol version in use. Also change
9467 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
9468 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
9469 the client will at least see that alert.
9472 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
9476 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
9477 client receives HelloRequest while in a handshake.
9478 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
9480 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
9481 should end in 'break', not 'goto end' which circumvents various
9482 cleanups done in state SSL_ST_OK. But session related stuff
9483 must be disabled for SSL_ST_OK in the case that we just sent a
9486 Also avoid some overhead by not calling ssl_init_wbio_buffer()
9487 before just sending a HelloRequest.
9488 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
9490 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
9491 reveal whether illegal block cipher padding was found or a MAC
9492 verification error occurred. (Neither SSLerr() codes nor alerts
9493 are directly visible to potential attackers, but the information
9494 may leak via logfiles.)
9496 Similar changes are not required for the SSL 2.0 implementation
9497 because the number of padding bytes is sent in clear for SSL 2.0,
9498 and the extra bytes are just ignored. However ssl/s2_pkt.c
9499 failed to verify that the purported number of padding bytes is in
9503 *) Add OpenUNIX-8 support including shared libraries
9504 (Boyd Lynn Gerber <gerberb@zenez.com>).
9507 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
9508 'wristwatch attack' using huge encoding parameters (cf.
9509 James H. Manger's CRYPTO 2001 paper). Note that the
9510 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
9511 encoding parameters and hence was not vulnerable.
9514 *) BN_sqr() bug fix.
9515 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
9517 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
9518 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
9519 followed by modular reduction.
9520 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
9522 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
9523 equivalent based on BN_pseudo_rand() instead of BN_rand().
9526 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
9527 This function was broken, as the check for a new client hello message
9528 to handle SGC did not allow these large messages.
9529 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
9532 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
9535 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
9536 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
9539 *) Rework the configuration and shared library support for Tru64 Unix.
9540 The configuration part makes use of modern compiler features and
9541 still retains old compiler behavior for those that run older versions
9542 of the OS. The shared library support part includes a variant that
9543 uses the RPATH feature, and is available through the special
9544 configuration target "alpha-cc-rpath", which will never be selected
9546 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
9548 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
9549 with the same message size as in ssl3_get_certificate_request().
9550 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
9551 messages might inadvertently be reject as too long.
9552 [Petr Lampa <lampa@fee.vutbr.cz>]
9554 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
9557 *) Modified SSL library such that the verify_callback that has been set
9558 specificly for an SSL object with SSL_set_verify() is actually being
9559 used. Before the change, a verify_callback set with this function was
9560 ignored and the verify_callback() set in the SSL_CTX at the time of
9561 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
9562 to allow the necessary settings.
9565 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
9566 explicitly to NULL, as at least on Solaris 8 this seems not always to be
9567 done automatically (in contradiction to the requirements of the C
9568 standard). This made problems when used from OpenSSH.
9571 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
9572 dh->length and always used
9574 BN_rand_range(priv_key, dh->p).
9576 BN_rand_range() is not necessary for Diffie-Hellman, and this
9577 specific range makes Diffie-Hellman unnecessarily inefficient if
9578 dh->length (recommended exponent length) is much smaller than the
9579 length of dh->p. We could use BN_rand_range() if the order of
9580 the subgroup was stored in the DH structure, but we only have
9585 BN_rand(priv_key, l, ...)
9587 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
9593 RSA_eay_public_encrypt
9594 RSA_eay_private_decrypt
9595 RSA_eay_private_encrypt (signing)
9596 RSA_eay_public_decrypt (signature verification)
9598 (default implementations for RSA_public_encrypt,
9599 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
9600 always reject numbers >= n.
9603 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
9604 to synchronize access to 'locking_thread'. This is necessary on
9605 systems where access to 'locking_thread' (an 'unsigned long'
9606 variable) is not atomic.
9609 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
9610 *before* setting the 'crypto_lock_rand' flag. The previous code had
9611 a race condition if 0 is a valid thread ID.
9612 [Travis Vitek <vitek@roguewave.com>]
9614 *) Add support for shared libraries under Irix.
9615 [Albert Chin-A-Young <china@thewrittenword.com>]
9617 *) Add configuration option to build on Linux on both big-endian and
9619 [Ralf Baechle <ralf@uni-koblenz.de>]
9621 *) Add the possibility to create shared libraries on HP-UX.
9624 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
9626 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
9627 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
9628 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
9629 PRNG state recovery was possible based on the output of
9630 one PRNG request appropriately sized to gain knowledge on
9631 'md' followed by enough consecutive 1-byte PRNG requests
9632 to traverse all of 'state'.
9634 1. When updating 'md_local' (the current thread's copy of 'md')
9635 during PRNG output generation, hash all of the previous
9636 'md_local' value, not just the half used for PRNG output.
9638 2. Make the number of bytes from 'state' included into the hash
9639 independent from the number of PRNG bytes requested.
9641 The first measure alone would be sufficient to avoid
9642 Markku-Juhani's attack. (Actually it had never occurred
9643 to me that the half of 'md_local' used for chaining was the
9644 half from which PRNG output bytes were taken -- I had always
9645 assumed that the secret half would be used.) The second
9646 measure makes sure that additional data from 'state' is never
9647 mixed into 'md_local' in small portions; this heuristically
9648 further strengthens the PRNG.
9651 *) Fix crypto/bn/asm/mips3.s.
9654 *) When only the key is given to "enc", the IV is undefined. Print out
9655 an error message in this case.
9658 *) Handle special case when X509_NAME is empty in X509 printing routines.
9661 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
9662 positive and less than q.
9665 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
9666 used: it isn't thread safe and the add_lock_callback should handle
9668 [Paul Rose <Paul.Rose@bridge.com>]
9670 *) Verify that incoming data obeys the block size in
9671 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
9675 [Ulf Möller, Bodo Möller]
9677 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
9678 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
9679 when fixing the server behaviour for backwards-compatible 'client
9680 hello' messages. (Note that the attack is impractical against
9681 SSL 3.0 and TLS 1.0 anyway because length and version checking
9682 means that the probability of guessing a valid ciphertext is
9683 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
9686 Before 0.9.5, the countermeasure (hide the error by generating a
9687 random 'decryption result') did not work properly because
9688 ERR_clear_error() was missing, meaning that SSL_get_error() would
9689 detect the supposedly ignored error.
9691 Both problems are now fixed.
9694 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
9695 (previously it was 1024).
9698 *) Fix for compatibility mode trust settings: ignore trust settings
9699 unless some valid trust or reject settings are present.
9702 *) Fix for blowfish EVP: its a variable length cipher.
9705 *) Fix various bugs related to DSA S/MIME verification. Handle missing
9706 parameters in DSA public key structures and return an error in the
9707 DSA routines if parameters are absent.
9710 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
9711 in the current directory if neither $RANDFILE nor $HOME was set.
9712 RAND_file_name() in 0.9.6a returned NULL in this case. This has
9713 caused some confusion to Windows users who haven't defined $HOME.
9714 Thus RAND_file_name() is changed again: e_os.h can define a
9715 DEFAULT_HOME, which will be used if $HOME is not set.
9716 For Windows, we use "C:"; on other platforms, we still require
9717 environment variables.
9719 *) Move 'if (!initialized) RAND_poll()' into regions protected by
9720 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
9721 having multiple threads call RAND_poll() concurrently.
9724 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
9725 combination of a flag and a thread ID variable.
9726 Otherwise while one thread is in ssleay_rand_bytes (which sets the
9727 flag), *other* threads can enter ssleay_add_bytes without obeying
9728 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
9729 that they do not hold after the first thread unsets add_do_not_lock).
9732 *) Change bctest again: '-x' expressions are not available in all
9736 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
9738 *) Fix a couple of memory leaks in PKCS7_dataDecode()
9739 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
9741 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
9742 the default extension for executables, if any. Also, make the perl
9743 scripts that use symlink() to test if it really exists and use "cp"
9744 if it doesn't. All this made OpenSSL compilable and installable in
9748 *) Fix for asn1_GetSequence() for indefinite length constructed data.
9749 If SEQUENCE is length is indefinite just set c->slen to the total
9750 amount of data available.
9751 [Steve Henson, reported by shige@FreeBSD.org]
9752 [This change does not apply to 0.9.7.]
9754 *) Change bctest to avoid here-documents inside command substitution
9755 (workaround for FreeBSD /bin/sh bug).
9756 For compatibility with Ultrix, avoid shell functions (introduced
9757 in the bctest version that searches along $PATH).
9760 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
9761 with des_encrypt() defined on some operating systems, like Solaris
9765 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
9766 On the Importance of Eliminating Errors in Cryptographic
9767 Computations, J. Cryptology 14 (2001) 2, 101-119,
9768 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
9771 *) MIPS assembler BIGNUM division bug fix.
9774 *) Disabled incorrect Alpha assembler code.
9777 *) Fix PKCS#7 decode routines so they correctly update the length
9778 after reading an EOC for the EXPLICIT tag.
9780 [This change does not apply to 0.9.7.]
9782 *) Fix bug in PKCS#12 key generation routines. This was triggered
9783 if a 3DES key was generated with a 0 initial byte. Include
9784 PKCS12_BROKEN_KEYGEN compilation option to retain the old
9785 (but broken) behaviour.
9788 *) Enhance bctest to search for a working bc along $PATH and print
9790 [Tim Rice <tim@multitalents.net> via Richard Levitte]
9792 *) Fix memory leaks in err.c: free err_data string if necessary;
9793 don't write to the wrong index in ERR_set_error_data.
9796 *) Implement ssl23_peek (analogous to ssl23_read), which previously
9800 *) Replace rdtsc with _emit statements for VC++ version 5.
9801 [Jeremy Cooper <jeremy@baymoo.org>]
9803 *) Make it possible to reuse SSLv2 sessions.
9806 *) In copy_email() check for >= 0 as a return value for
9807 X509_NAME_get_index_by_NID() since 0 is a valid index.
9808 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
9810 *) Avoid coredump with unsupported or invalid public keys by checking if
9811 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
9812 PKCS7_verify() fails with non detached data.
9815 *) Don't use getenv in library functions when run as setuid/setgid.
9816 New function OPENSSL_issetugid().
9819 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
9820 due to incorrect handling of multi-threading:
9822 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
9824 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
9826 3. Count how many times MemCheck_off() has been called so that
9827 nested use can be treated correctly. This also avoids
9828 inband-signalling in the previous code (which relied on the
9829 assumption that thread ID 0 is impossible).
9832 *) Add "-rand" option also to s_client and s_server.
9835 *) Fix CPU detection on Irix 6.x.
9836 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
9837 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
9839 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
9842 [This change does not apply to 0.9.7.]
9844 *) Use the cached encoding of an X509_NAME structure rather than
9845 copying it. This is apparently the reason for the libsafe "errors"
9846 but the code is actually correct.
9849 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
9850 Bleichenbacher's DSA attack.
9851 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
9852 to be set and top=0 forces the highest bit to be set; top=-1 is new
9853 and leaves the highest bit random.
9854 [Ulf Moeller, Bodo Moeller]
9856 *) In the NCONF_...-based implementations for CONF_... queries
9857 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
9858 a temporary CONF structure with the data component set to NULL
9859 (which gives segmentation faults in lh_retrieve).
9860 Instead, use NULL for the CONF pointer in CONF_get_string and
9861 CONF_get_number (which may use environment variables) and directly
9862 return NULL from CONF_get_section.
9865 *) Fix potential buffer overrun for EBCDIC.
9868 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
9869 keyUsage if basicConstraints absent for a CA.
9872 *) Make SMIME_write_PKCS7() write mail header values with a format that
9873 is more generally accepted (no spaces before the semicolon), since
9874 some programs can't parse those values properly otherwise. Also make
9875 sure BIO's that break lines after each write do not create invalid
9879 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
9880 macros previously used would not encode an empty SEQUENCE OF
9881 and break the signature.
9883 [This change does not apply to 0.9.7.]
9885 *) Zero the premaster secret after deriving the master secret in
9889 *) Add some EVP_add_digest_alias registrations (as found in
9890 OpenSSL_add_all_digests()) to SSL_library_init()
9891 aka OpenSSL_add_ssl_algorithms(). This provides improved
9892 compatibility with peers using X.509 certificates
9893 with unconventional AlgorithmIdentifier OIDs.
9896 *) Fix for Irix with NO_ASM.
9897 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
9899 *) ./config script fixes.
9900 [Ulf Moeller, Richard Levitte]
9902 *) Fix 'openssl passwd -1'.
9905 *) Change PKCS12_key_gen_asc() so it can cope with non null
9906 terminated strings whose length is passed in the passlen
9907 parameter, for example from PEM callbacks. This was done
9908 by adding an extra length parameter to asc2uni().
9909 [Steve Henson, reported by <oddissey@samsung.co.kr>]
9911 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
9912 call failed, free the DSA structure.
9915 *) Fix to uni2asc() to cope with zero length Unicode strings.
9916 These are present in some PKCS#12 files.
9919 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
9920 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
9921 when writing a 32767 byte record.
9922 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
9924 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
9925 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
9927 (RSA objects have a reference count access to which is protected
9928 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
9929 so they are meant to be shared between threads.)
9930 [Bodo Moeller, Geoff Thorpe; original patch submitted by
9931 "Reddie, Steven" <Steven.Reddie@ca.com>]
9933 *) Fix a deadlock in CRYPTO_mem_leaks().
9936 *) Use better test patterns in bntest.
9939 *) rand_win.c fix for Borland C.
9942 *) BN_rshift bugfix for n == 0.
9945 *) Add a 'bctest' script that checks for some known 'bc' bugs
9946 so that 'make test' does not abort just because 'bc' is broken.
9949 *) Store verify_result within SSL_SESSION also for client side to
9950 avoid potential security hole. (Re-used sessions on the client side
9951 always resulted in verify_result==X509_V_OK, not using the original
9952 result of the server certificate verification.)
9955 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
9956 SSL3_RT_APPLICATION_DATA, return 0.
9957 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
9961 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
9962 releases, have been re-implemented by renaming the previous
9963 implementations of ssl2_read and ssl3_read to ssl2_read_internal
9964 and ssl3_read_internal, respectively, and adding 'peek' parameters
9965 to them. The new ssl[23]_{read,peek} functions are calls to
9966 ssl[23]_read_internal with the 'peek' flag set appropriately.
9967 A 'peek' parameter has also been added to ssl3_read_bytes, which
9968 does the actual work for ssl3_read_internal.
9971 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
9972 the method-specific "init()" handler. Also clean up ex_data after
9973 calling the method-specific "finish()" handler. Previously, this was
9974 happening the other way round.
9977 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
9978 The previous value, 12, was not always sufficient for BN_mod_exp().
9981 *) Make sure that shared libraries get the internal name engine with
9982 the full version number and not just 0. This should mark the
9983 shared libraries as not backward compatible. Of course, this should
9984 be changed again when we can guarantee backward binary compatibility.
9987 *) Fix typo in get_cert_by_subject() in by_dir.c
9988 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
9990 *) Rework the system to generate shared libraries:
9992 - Make note of the expected extension for the shared libraries and
9993 if there is a need for symbolic links from for example libcrypto.so.0
9994 to libcrypto.so.0.9.7. There is extended info in Configure for
9997 - Make as few rebuilds of the shared libraries as possible.
9999 - Still avoid linking the OpenSSL programs with the shared libraries.
10001 - When installing, install the shared libraries separately from the
10005 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
10007 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
10008 and not in SSL_clear because the latter is also used by the
10009 accept/connect functions; previously, the settings made by
10010 SSL_set_read_ahead would be lost during the handshake.
10011 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
10013 *) Correct util/mkdef.pl to be selective about disabled algorithms.
10014 Previously, it would create entries for disabled algorithms no
10018 *) Added several new manual pages for SSL_* function.
10021 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
10023 *) In ssl23_get_client_hello, generate an error message when faced
10024 with an initial SSL 3.0/TLS record that is too small to contain the
10025 first two bytes of the ClientHello message, i.e. client_version.
10026 (Note that this is a pathologic case that probably has never happened
10027 in real life.) The previous approach was to use the version number
10028 from the record header as a substitute; but our protocol choice
10029 should not depend on that one because it is not authenticated
10030 by the Finished messages.
10033 *) More robust randomness gathering functions for Windows.
10034 [Jeffrey Altman <jaltman@columbia.edu>]
10036 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
10037 not set then we don't setup the error code for issuer check errors
10038 to avoid possibly overwriting other errors which the callback does
10039 handle. If an application does set the flag then we assume it knows
10040 what it is doing and can handle the new informational codes
10044 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
10045 a general "ANY" type, as such it should be able to decode anything
10046 including tagged types. However it didn't check the class so it would
10047 wrongly interpret tagged types in the same way as their universal
10048 counterpart and unknown types were just rejected. Changed so that the
10049 tagged and unknown types are handled in the same way as a SEQUENCE:
10050 that is the encoding is stored intact. There is also a new type
10051 "V_ASN1_OTHER" which is used when the class is not universal, in this
10052 case we have no idea what the actual type is so we just lump them all
10056 *) On VMS, stdout may very well lead to a file that is written to
10057 in a record-oriented fashion. That means that every write() will
10058 write a separate record, which will be read separately by the
10059 programs trying to read from it. This can be very confusing.
10061 The solution is to put a BIO filter in the way that will buffer
10062 text until a linefeed is reached, and then write everything a
10063 line at a time, so every record written will be an actual line,
10064 not chunks of lines and not (usually doesn't happen, but I've
10065 seen it once) several lines in one record. BIO_f_linebuffer() is
10068 Currently, it's a VMS-only method, because that's where it has
10069 been tested well enough.
10072 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
10073 it can return incorrect results.
10074 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
10075 but it was in 0.9.6-beta[12].)
10078 *) Disable the check for content being present when verifying detached
10079 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
10080 include zero length content when signing messages.
10083 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
10084 BIO_ctrl (for BIO pairs).
10087 *) Add DSO method for VMS.
10090 *) Bug fix: Montgomery multiplication could produce results with the
10094 *) Add RPM specification openssl.spec and modify it to build three
10095 packages. The default package contains applications, application
10096 documentation and run-time libraries. The devel package contains
10097 include files, static libraries and function documentation. The
10098 doc package contains the contents of the doc directory. The original
10099 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
10102 *) Add a large number of documentation files for many SSL routines.
10103 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
10105 *) Add a configuration entry for Sony News 4.
10106 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
10108 *) Don't set the two most significant bits to one when generating a
10109 random number < q in the DSA library.
10112 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
10113 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
10114 the underlying transport is blocking) if a handshake took place.
10115 (The default behaviour is needed by applications such as s_client
10116 and s_server that use select() to determine when to use SSL_read;
10117 but for applications that know in advance when to expect data, it
10118 just makes things more complicated.)
10121 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
10125 *) Add a few more EBCDIC conditionals that make `req' and `x509'
10126 work better on such systems.
10127 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
10129 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
10130 Update PKCS12_parse() so it copies the friendlyName and the
10131 keyid to the certificates aux info.
10134 *) Fix bug in PKCS7_verify() which caused an infinite loop
10135 if there was more than one signature.
10136 [Sven Uszpelkat <su@celocom.de>]
10138 *) Major change in util/mkdef.pl to include extra information
10139 about each symbol, as well as presenting variables as well
10140 as functions. This change means that there's n more need
10141 to rebuild the .num files when some algorithms are excluded.
10144 *) Allow the verify time to be set by an application,
10145 rather than always using the current time.
10148 *) Phase 2 verify code reorganisation. The certificate
10149 verify code now looks up an issuer certificate by a
10150 number of criteria: subject name, authority key id
10151 and key usage. It also verifies self signed certificates
10152 by the same criteria. The main comparison function is
10153 X509_check_issued() which performs these checks.
10155 Lot of changes were necessary in order to support this
10156 without completely rewriting the lookup code.
10158 Authority and subject key identifier are now cached.
10160 The LHASH 'certs' is X509_STORE has now been replaced
10161 by a STACK_OF(X509_OBJECT). This is mainly because an
10162 LHASH can't store or retrieve multiple objects with
10163 the same hash value.
10165 As a result various functions (which were all internal
10166 use only) have changed to handle the new X509_STORE
10167 structure. This will break anything that messed round
10168 with X509_STORE internally.
10170 The functions X509_STORE_add_cert() now checks for an
10171 exact match, rather than just subject name.
10173 The X509_STORE API doesn't directly support the retrieval
10174 of multiple certificates matching a given criteria, however
10175 this can be worked round by performing a lookup first
10176 (which will fill the cache with candidate certificates)
10177 and then examining the cache for matches. This is probably
10178 the best we can do without throwing out X509_LOOKUP
10179 entirely (maybe later...).
10181 The X509_VERIFY_CTX structure has been enhanced considerably.
10183 All certificate lookup operations now go via a get_issuer()
10184 callback. Although this currently uses an X509_STORE it
10185 can be replaced by custom lookups. This is a simple way
10186 to bypass the X509_STORE hackery necessary to make this
10187 work and makes it possible to use more efficient techniques
10188 in future. A very simple version which uses a simple
10189 STACK for its trusted certificate store is also provided
10190 using X509_STORE_CTX_trusted_stack().
10192 The verify_cb() and verify() callbacks now have equivalents
10193 in the X509_STORE_CTX structure.
10195 X509_STORE_CTX also has a 'flags' field which can be used
10196 to customise the verify behaviour.
10199 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
10200 excludes S/MIME capabilities.
10203 *) When a certificate request is read in keep a copy of the
10204 original encoding of the signed data and use it when outputting
10205 again. Signatures then use the original encoding rather than
10206 a decoded, encoded version which may cause problems if the
10207 request is improperly encoded.
10210 *) For consistency with other BIO_puts implementations, call
10211 buffer_write(b, ...) directly in buffer_puts instead of calling
10214 In BIO_puts, increment b->num_write as in BIO_write.
10215 [Peter.Sylvester@EdelWeb.fr]
10217 *) Fix BN_mul_word for the case where the word is 0. (We have to use
10218 BN_zero, we may not return a BIGNUM with an array consisting of
10219 words set to zero.)
10222 *) Avoid calling abort() from within the library when problems are
10223 detected, except if preprocessor symbols have been defined
10224 (such as REF_CHECK, BN_DEBUG etc.).
10227 *) New openssl application 'rsautl'. This utility can be
10228 used for low level RSA operations. DER public key
10229 BIO/fp routines also added.
10232 *) New Configure entry and patches for compiling on QNX 4.
10233 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
10235 *) A demo state-machine implementation was sponsored by
10236 Nuron (http://www.nuron.com/) and is now available in
10237 demos/state_machine.
10240 *) New options added to the 'dgst' utility for signature
10241 generation and verification.
10244 *) Unrecognized PKCS#7 content types are now handled via a
10245 catch all ASN1_TYPE structure. This allows unsupported
10246 types to be stored as a "blob" and an application can
10247 encode and decode it manually.
10250 *) Fix various signed/unsigned issues to make a_strex.c
10251 compile under VC++.
10252 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
10254 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
10255 length if passed a buffer. ASN1_INTEGER_to_BN failed
10256 if passed a NULL BN and its argument was negative.
10257 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
10259 *) Modification to PKCS#7 encoding routines to output definite
10260 length encoding. Since currently the whole structures are in
10261 memory there's not real point in using indefinite length
10262 constructed encoding. However if OpenSSL is compiled with
10263 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
10266 *) Added BIO_vprintf() and BIO_vsnprintf().
10269 *) Added more prefixes to parse for in the strings written
10270 through a logging bio, to cover all the levels that are available
10271 through syslog. The prefixes are now:
10273 PANIC, EMERG, EMR => LOG_EMERG
10274 ALERT, ALR => LOG_ALERT
10275 CRIT, CRI => LOG_CRIT
10276 ERROR, ERR => LOG_ERR
10277 WARNING, WARN, WAR => LOG_WARNING
10278 NOTICE, NOTE, NOT => LOG_NOTICE
10279 INFO, INF => LOG_INFO
10280 DEBUG, DBG => LOG_DEBUG
10282 and as before, if none of those prefixes are present at the
10283 beginning of the string, LOG_ERR is chosen.
10285 On Win32, the LOG_* levels are mapped according to this:
10287 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
10288 LOG_WARNING => EVENTLOG_WARNING_TYPE
10289 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
10293 *) Made it possible to reconfigure with just the configuration
10294 argument "reconf" or "reconfigure". The command line arguments
10295 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
10296 and are retrieved from there when reconfiguring.
10299 *) MD4 implemented.
10300 [Assar Westerlund <assar@sics.se>, Richard Levitte]
10302 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
10305 *) The obj_dat.pl script was messing up the sorting of object
10306 names. The reason was that it compared the quoted version
10307 of strings as a result "OCSP" > "OCSP Signing" because
10308 " > SPACE. Changed script to store unquoted versions of
10309 names and add quotes on output. It was also omitting some
10310 names from the lookup table if they were given a default
10311 value (that is if SN is missing it is given the same
10312 value as LN and vice versa), these are now added on the
10313 grounds that if an object has a name we should be able to
10314 look it up. Finally added warning output when duplicate
10315 short or long names are found.
10318 *) Changes needed for Tandem NSK.
10319 [Scott Uroff <scott@xypro.com>]
10321 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
10322 RSA_padding_check_SSLv23(), special padding was never detected
10323 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
10324 version rollback attacks was not effective.
10326 In s23_clnt.c, don't use special rollback-attack detection padding
10327 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
10328 client; similarly, in s23_srvr.c, don't do the rollback check if
10329 SSL 2.0 is the only protocol enabled in the server.
10332 *) Make it possible to get hexdumps of unprintable data with 'openssl
10333 asn1parse'. By implication, the functions ASN1_parse_dump() and
10334 BIO_dump_indent() are added.
10337 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
10338 these print out strings and name structures based on various
10339 flags including RFC2253 support and proper handling of
10340 multibyte characters. Added options to the 'x509' utility
10341 to allow the various flags to be set.
10344 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
10345 Also change the functions X509_cmp_current_time() and
10346 X509_gmtime_adj() work with an ASN1_TIME structure,
10347 this will enable certificates using GeneralizedTime in validity
10348 dates to be checked.
10351 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
10352 negative public key encodings) on by default,
10353 NO_NEG_PUBKEY_BUG can be set to disable it.
10356 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
10357 content octets. An i2c_ASN1_OBJECT is unnecessary because
10358 the encoding can be trivially obtained from the structure.
10361 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
10362 not read locks (CRYPTO_r_[un]lock).
10365 *) A first attempt at creating official support for shared
10366 libraries through configuration. I've kept it so the
10367 default is static libraries only, and the OpenSSL programs
10368 are always statically linked for now, but there are
10369 preparations for dynamic linking in place.
10370 This has been tested on Linux and Tru64.
10373 *) Randomness polling function for Win9x, as described in:
10374 Peter Gutmann, Software Generation of Practically Strong
10378 *) Fix so PRNG is seeded in req if using an already existing
10382 *) New options to smime application. -inform and -outform
10383 allow alternative formats for the S/MIME message including
10384 PEM and DER. The -content option allows the content to be
10385 specified separately. This should allow things like Netscape
10386 form signing output easier to verify.
10389 *) Fix the ASN1 encoding of tags using the 'long form'.
10392 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
10393 STRING types. These convert content octets to and from the
10394 underlying type. The actual tag and length octets are
10395 already assumed to have been read in and checked. These
10396 are needed because all other string types have virtually
10397 identical handling apart from the tag. By having versions
10398 of the ASN1 functions that just operate on content octets
10399 IMPLICIT tagging can be handled properly. It also allows
10400 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
10401 and ASN1_INTEGER are identical apart from the tag.
10404 *) Change the handling of OID objects as follows:
10406 - New object identifiers are inserted in objects.txt, following
10407 the syntax given in objects.README.
10408 - objects.pl is used to process obj_mac.num and create a new
10410 - obj_dat.pl is used to create a new obj_dat.h, using the data in
10413 This is currently kind of a hack, and the perl code in objects.pl
10414 isn't very elegant, but it works as I intended. The simplest way
10415 to check that it worked correctly is to look in obj_dat.h and
10416 check the array nid_objs and make sure the objects haven't moved
10417 around (this is important!). Additions are OK, as well as
10418 consistent name changes.
10421 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
10424 *) Addition of the command line parameter '-rand file' to 'openssl req'.
10425 The given file adds to whatever has already been seeded into the
10426 random pool through the RANDFILE configuration file option or
10427 environment variable, or the default random state file.
10430 *) mkstack.pl now sorts each macro group into lexical order.
10431 Previously the output order depended on the order the files
10432 appeared in the directory, resulting in needless rewriting
10436 *) Patches to make OpenSSL compile under Win32 again. Mostly
10437 work arounds for the VC++ problem that it treats func() as
10438 func(void). Also stripped out the parts of mkdef.pl that
10439 added extra typesafe functions: these no longer exist.
10442 *) Reorganisation of the stack code. The macros are now all
10443 collected in safestack.h . Each macro is defined in terms of
10444 a "stack macro" of the form SKM_<name>(type, a, b). The
10445 DEBUG_SAFESTACK is now handled in terms of function casts,
10446 this has the advantage of retaining type safety without the
10447 use of additional functions. If DEBUG_SAFESTACK is not defined
10448 then the non typesafe macros are used instead. Also modified the
10449 mkstack.pl script to handle the new form. Needs testing to see
10450 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
10451 the default if no major problems. Similar behaviour for ASN1_SET_OF
10452 and PKCS12_STACK_OF.
10455 *) When some versions of IIS use the 'NET' form of private key the
10456 key derivation algorithm is different. Normally MD5(password) is
10457 used as a 128 bit RC4 key. In the modified case
10458 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
10459 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
10460 as the old Netscape_RSA functions except they have an additional
10461 'sgckey' parameter which uses the modified algorithm. Also added
10462 an -sgckey command line option to the rsa utility. Thanks to
10463 Adrian Peck <bertie@ncipher.com> for posting details of the modified
10464 algorithm to openssl-dev.
10467 *) The evp_local.h macros were using 'c.##kname' which resulted in
10468 invalid expansion on some systems (SCO 5.0.5 for example).
10469 Corrected to 'c.kname'.
10470 [Phillip Porch <root@theporch.com>]
10472 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
10473 a STACK of email addresses from a certificate or request, these look
10474 in the subject name and the subject alternative name extensions and
10475 omit any duplicate addresses.
10478 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
10479 This makes DSA verification about 2 % faster.
10482 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
10483 (meaning that now 2^5 values will be precomputed, which is only 4 KB
10484 plus overhead for 1024 bit moduli).
10485 This makes exponentiations about 0.5 % faster for 1024 bit
10486 exponents (as measured by "openssl speed rsa2048").
10489 *) Rename memory handling macros to avoid conflicts with other
10491 Malloc => OPENSSL_malloc
10492 Malloc_locked => OPENSSL_malloc_locked
10493 Realloc => OPENSSL_realloc
10494 Free => OPENSSL_free
10497 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
10498 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
10501 *) CygWin32 support.
10502 [John Jarvie <jjarvie@newsguy.com>]
10504 *) The type-safe stack code has been rejigged. It is now only compiled
10505 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
10506 by default all type-specific stack functions are "#define"d back to
10507 standard stack functions. This results in more streamlined output
10508 but retains the type-safety checking possibilities of the original
10512 *) The STACK code has been cleaned up, and certain type declarations
10513 that didn't make a lot of sense have been brought in line. This has
10514 also involved a cleanup of sorts in safestack.h to more correctly
10515 map type-safe stack functions onto their plain stack counterparts.
10516 This work has also resulted in a variety of "const"ifications of
10517 lots of the code, especially "_cmp" operations which should normally
10518 be prototyped with "const" parameters anyway.
10521 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
10522 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
10523 (The PRNG state consists of two parts, the large pool 'state' and 'md',
10524 where all of 'md' is used each time the PRNG is used, but 'state'
10525 is used only indexed by a cyclic counter. As entropy may not be
10526 well distributed from the beginning, 'md' is important as a
10527 chaining variable. However, the output function chains only half
10528 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
10529 all of 'md', and seeding with STATE_SIZE dummy bytes will result
10530 in all of 'state' being rewritten, with the new values depending
10531 on virtually all of 'md'. This overcomes the 80 bit limitation.)
10534 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
10535 the handshake is continued after ssl_verify_cert_chain();
10536 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
10537 can lead to 'unexplainable' connection aborts later.
10538 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
10540 *) Major EVP API cipher revision.
10541 Add hooks for extra EVP features. This allows various cipher
10542 parameters to be set in the EVP interface. Support added for variable
10543 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
10544 setting of RC2 and RC5 parameters.
10546 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
10549 Remove lots of duplicated code from the EVP library. For example *every*
10550 cipher init() function handles the 'iv' in the same way according to the
10551 cipher mode. They also all do nothing if the 'key' parameter is NULL and
10552 for CFB and OFB modes they zero ctx->num.
10554 New functionality allows removal of S/MIME code RC2 hack.
10556 Most of the routines have the same form and so can be declared in terms
10559 By shifting this to the top level EVP_CipherInit() it can be removed from
10560 all individual ciphers. If the cipher wants to handle IVs or keys
10561 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
10564 Change lots of functions like EVP_EncryptUpdate() to now return a
10565 value: although software versions of the algorithms cannot fail
10566 any installed hardware versions can.
10569 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
10570 this option is set, tolerate broken clients that send the negotiated
10571 protocol version number instead of the requested protocol version
10575 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
10576 i.e. non-zero for export ciphersuites, zero otherwise.
10577 Previous versions had this flag inverted, inconsistent with
10578 rsa_tmp_cb (..._TMP_RSA_CB).
10579 [Bodo Moeller; problem reported by Amit Chopra]
10581 *) Add missing DSA library text string. Work around for some IIS
10582 key files with invalid SEQUENCE encoding.
10585 *) Add a document (doc/standards.txt) that list all kinds of standards
10586 and so on that are implemented in OpenSSL.
10589 *) Enhance c_rehash script. Old version would mishandle certificates
10590 with the same subject name hash and wouldn't handle CRLs at all.
10591 Added -fingerprint option to crl utility, to support new c_rehash
10595 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
10598 *) Fix for SSL server purpose checking. Server checking was
10599 rejecting certificates which had extended key usage present
10600 but no ssl client purpose.
10601 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
10603 *) Make PKCS#12 code work with no password. The PKCS#12 spec
10604 is a little unclear about how a blank password is handled.
10605 Since the password in encoded as a BMPString with terminating
10606 double NULL a zero length password would end up as just the
10607 double NULL. However no password at all is different and is
10608 handled differently in the PKCS#12 key generation code. NS
10609 treats a blank password as zero length. MSIE treats it as no
10610 password on export: but it will try both on import. We now do
10611 the same: PKCS12_parse() tries zero length and no password if
10612 the password is set to "" or NULL (NULL is now a valid password:
10613 it wasn't before) as does the pkcs12 application.
10616 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
10617 perror when PEM_read_bio_X509_REQ fails, the error message must
10618 be obtained from the error queue.
10621 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
10622 it in ERR_remove_state if appropriate, and change ERR_get_state
10623 accordingly to avoid race conditions (this is necessary because
10624 thread_hash is no longer constant once set).
10627 *) Bugfix for linux-elf makefile.one.
10630 *) RSA_get_default_method() will now cause a default
10631 RSA_METHOD to be chosen if one doesn't exist already.
10632 Previously this was only set during a call to RSA_new()
10633 or RSA_new_method(NULL) meaning it was possible for
10634 RSA_get_default_method() to return NULL.
10637 *) Added native name translation to the existing DSO code
10638 that will convert (if the flag to do so is set) filenames
10639 that are sufficiently small and have no path information
10640 into a canonical native form. Eg. "blah" converted to
10641 "libblah.so" or "blah.dll" etc.
10644 *) New function ERR_error_string_n(e, buf, len) which is like
10645 ERR_error_string(e, buf), but writes at most 'len' bytes
10646 including the 0 terminator. For ERR_error_string_n, 'buf'
10648 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
10650 *) CONF library reworked to become more general. A new CONF
10651 configuration file reader "class" is implemented as well as a
10652 new functions (NCONF_*, for "New CONF") to handle it. The now
10653 old CONF_* functions are still there, but are reimplemented to
10654 work in terms of the new functions. Also, a set of functions
10655 to handle the internal storage of the configuration data is
10656 provided to make it easier to write new configuration file
10657 reader "classes" (I can definitely see something reading a
10658 configuration file in XML format, for example), called _CONF_*,
10659 or "the configuration storage API"...
10661 The new configuration file reading functions are:
10663 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
10664 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
10666 NCONF_default, NCONF_WIN32
10668 NCONF_dump_fp, NCONF_dump_bio
10670 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
10671 NCONF_new creates a new CONF object. This works in the same way
10672 as other interfaces in OpenSSL, like the BIO interface.
10673 NCONF_dump_* dump the internal storage of the configuration file,
10674 which is useful for debugging. All other functions take the same
10675 arguments as the old CONF_* functions wth the exception of the
10676 first that must be a `CONF *' instead of a `LHASH *'.
10678 To make it easer to use the new classes with the old CONF_* functions,
10679 the function CONF_set_default_method is provided.
10682 *) Add '-tls1' option to 'openssl ciphers', which was already
10683 mentioned in the documentation but had not been implemented.
10684 (This option is not yet really useful because even the additional
10685 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
10688 *) Initial DSO code added into libcrypto for letting OpenSSL (and
10689 OpenSSL-based applications) load shared libraries and bind to
10690 them in a portable way.
10691 [Geoff Thorpe, with contributions from Richard Levitte]
10693 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
10695 *) Make sure _lrotl and _lrotr are only used with MSVC.
10697 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
10698 (the default implementation of RAND_status).
10700 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
10701 to '-clrext' (= clear extensions), as intended and documented.
10702 [Bodo Moeller; inconsistency pointed out by Michael Attili
10703 <attili@amaxo.com>]
10705 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
10706 was larger than the MD block size.
10707 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
10709 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
10710 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
10711 using the passed key: if the passed key was a private key the result
10712 of X509_print(), for example, would be to print out all the private key
10716 *) des_quad_cksum() byte order bug fix.
10717 [Ulf Möller, using the problem description in krb4-0.9.7, where
10718 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
10720 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
10722 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
10724 *) For easily testing in shell scripts whether some command
10725 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
10726 returns with exit code 0 iff no command of the given name is available.
10727 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
10728 the output goes to stdout and nothing is printed to stderr.
10729 Additional arguments are always ignored.
10731 Since for each cipher there is a command of the same name,
10732 the 'no-cipher' compilation switches can be tested this way.
10734 ('openssl no-XXX' is not able to detect pseudo-commands such
10735 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
10738 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
10741 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
10742 is set; it will be thrown away anyway because each handshake creates
10744 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
10745 to parameters -- in previous versions (since OpenSSL 0.9.3) the
10746 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
10747 you effectively got SSL_OP_SINGLE_DH_USE when using this macro.
10750 *) New s_client option -ign_eof: EOF at stdin is ignored, and
10751 'Q' and 'R' lose their special meanings (quit/renegotiate).
10752 This is part of what -quiet does; unlike -quiet, -ign_eof
10753 does not suppress any output.
10756 *) Add compatibility options to the purpose and trust code. The
10757 purpose X509_PURPOSE_ANY is "any purpose" which automatically
10758 accepts a certificate or CA, this was the previous behaviour,
10759 with all the associated security issues.
10761 X509_TRUST_COMPAT is the old trust behaviour: only and
10762 automatically trust self signed roots in certificate store. A
10763 new trust setting X509_TRUST_DEFAULT is used to specify that
10764 a purpose has no associated trust setting and it should instead
10765 use the value in the default purpose.
10768 *) Fix the PKCS#8 DSA private key code so it decodes keys again
10769 and fix a memory leak.
10772 *) In util/mkerr.pl (which implements 'make errors'), preserve
10773 reason strings from the previous version of the .c file, as
10774 the default to have only downcase letters (and digits) in
10775 automatically generated reasons codes is not always appropriate.
10778 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
10779 using strerror. Previously, ERR_reason_error_string() returned
10780 library names as reason strings for SYSerr; but SYSerr is a special
10781 case where small numbers are errno values, not library numbers.
10784 *) Add '-dsaparam' option to 'openssl dhparam' application. This
10785 converts DSA parameters into DH parameters. (When creating parameters,
10786 DSA_generate_parameters is used.)
10789 *) Include 'length' (recommended exponent length) in C code generated
10790 by 'openssl dhparam -C'.
10793 *) The second argument to set_label in perlasm was already being used
10794 so couldn't be used as a "file scope" flag. Moved to third argument
10798 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
10799 instead of RAND_bytes for encryption IVs and salts.
10802 *) Include RAND_status() into RAND_METHOD instead of implementing
10803 it only for md_rand.c Otherwise replacing the PRNG by calling
10804 RAND_set_rand_method would be impossible.
10807 *) Don't let DSA_generate_key() enter an infinite loop if the random
10808 number generation fails.
10811 *) New 'rand' application for creating pseudo-random output.
10814 *) Added configuration support for Linux/IA64
10815 [Rolf Haberrecker <rolf@suse.de>]
10817 *) Assembler module support for Mingw32.
10820 *) Shared library support for HPUX (in shlib/).
10821 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
10823 *) Shared library support for Solaris gcc.
10824 [Lutz Behnke <behnke@trustcenter.de>]
10826 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
10828 *) PKCS7_encrypt() was adding text MIME headers twice because they
10829 were added manually and by SMIME_crlf_copy().
10832 *) In bntest.c don't call BN_rand with zero bits argument.
10833 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
10835 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
10836 case was implemented. This caused BN_div_recp() to fail occasionally.
10839 *) Add an optional second argument to the set_label() in the perl
10840 assembly language builder. If this argument exists and is set
10841 to 1 it signals that the assembler should use a symbol whose
10842 scope is the entire file, not just the current function. This
10843 is needed with MASM which uses the format label:: for this scope.
10844 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
10846 *) Change the ASN1 types so they are typedefs by default. Before
10847 almost all types were #define'd to ASN1_STRING which was causing
10848 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
10852 *) Change names of new functions to the new get1/get0 naming
10853 convention: After 'get1', the caller owns a reference count
10854 and has to call ..._free; 'get0' returns a pointer to some
10855 data structure without incrementing reference counters.
10856 (Some of the existing 'get' functions increment a reference
10857 counter, some don't.)
10858 Similarly, 'set1' and 'add1' functions increase reference
10859 counters or duplicate objects.
10862 *) Allow for the possibility of temp RSA key generation failure:
10863 the code used to assume it always worked and crashed on failure.
10866 *) Fix potential buffer overrun problem in BIO_printf().
10867 [Ulf Möller, using public domain code by Patrick Powell; problem
10868 pointed out by David Sacerdote <das33@cornell.edu>]
10870 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
10871 RAND_egd() and RAND_status(). In the command line application,
10872 the EGD socket can be specified like a seed file using RANDFILE
10876 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
10877 Some CAs (e.g. Verisign) distribute certificates in this form.
10880 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
10881 list to exclude them. This means that no special compilation option
10882 is needed to use anonymous DH: it just needs to be included in the
10886 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
10887 EVP_MD_type. The old functionality is available in a new macro called
10888 EVP_MD_md(). Change code that uses it and update docs.
10891 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
10892 where the 'void *' argument is replaced by a function pointer argument.
10893 Previously 'void *' was abused to point to functions, which works on
10894 many platforms, but is not correct. As these functions are usually
10895 called by macros defined in OpenSSL header files, most source code
10896 should work without changes.
10899 *) <openssl/opensslconf.h> (which is created by Configure) now contains
10900 sections with information on -D... compiler switches used for
10901 compiling the library so that applications can see them. To enable
10902 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
10903 must be defined. E.g.,
10904 #define OPENSSL_ALGORITHM_DEFINES
10905 #include <openssl/opensslconf.h>
10906 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
10907 [Richard Levitte, Ulf and Bodo Möller]
10909 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
10913 *) Change the 'other' type in certificate aux info to a STACK_OF
10914 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
10915 the required ASN1 format: arbitrary types determined by an OID.
10918 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
10919 argument to 'req'. This is not because the function is newer or
10920 better than others it just uses the work 'NEW' in the certificate
10921 request header lines. Some software needs this.
10924 *) Reorganise password command line arguments: now passwords can be
10925 obtained from various sources. Delete the PEM_cb function and make
10926 it the default behaviour: i.e. if the callback is NULL and the
10927 usrdata argument is not NULL interpret it as a null terminated pass
10928 phrase. If usrdata and the callback are NULL then the pass phrase
10929 is prompted for as usual.
10932 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
10933 the support is automatically enabled. The resulting binaries will
10934 autodetect the card and use it if present.
10935 [Ben Laurie and Compaq Inc.]
10937 *) Work around for Netscape hang bug. This sends certificate request
10938 and server done in one record. Since this is perfectly legal in the
10939 SSL/TLS protocol it isn't a "bug" option and is on by default. See
10940 the bugs/SSLv3 entry for more info.
10943 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
10946 *) Add -rand argument to smime and pkcs12 applications and read/write
10950 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
10953 *) Add command line password options to the remaining applications.
10956 *) Bug fix for BN_div_recp() for numerators with an even number of
10960 *) More tests in bntest.c, and changed test_bn output.
10963 *) ./config recognizes MacOS X now.
10966 *) Bug fix for BN_div() when the first words of num and divisor are
10967 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
10970 *) Add support for various broken PKCS#8 formats, and command line
10971 options to produce them.
10974 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
10975 get temporary BIGNUMs from a BN_CTX.
10978 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
10982 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
10983 include a #define from the old name to the new. The original intent
10984 was that statically linked binaries could for example just call
10985 SSLeay_add_all_ciphers() to just add ciphers to the table and not
10986 link with digests. This never worked because SSLeay_add_all_digests()
10987 and SSLeay_add_all_ciphers() were in the same source file so calling
10988 one would link with the other. They are now in separate source files.
10991 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
10994 *) Use a less unusual form of the Miller-Rabin primality test (it used
10995 a binary algorithm for exponentiation integrated into the Miller-Rabin
10996 loop, our standard modexp algorithms are faster).
10999 *) Support for the EBCDIC character set completed.
11000 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
11002 *) Source code cleanups: use const where appropriate, eliminate casts,
11003 use void * instead of char * in lhash.
11006 *) Bugfix: ssl3_send_server_key_exchange was not restartable
11007 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
11008 this the server could overwrite ephemeral keys that the client
11012 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
11013 using 50 iterations of the Rabin-Miller test.
11015 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
11016 iterations of the Rabin-Miller test as required by the appendix
11017 to FIPS PUB 186[-1]) instead of DSA_is_prime.
11018 As BN_is_prime_fasttest includes trial division, DSA parameter
11019 generation becomes much faster.
11021 This implies a change for the callback functions in DSA_is_prime
11022 and DSA_generate_parameters: The callback function is called once
11023 for each positive witness in the Rabin-Miller test, not just
11024 occasionally in the inner loop; and the parameters to the
11025 callback function now provide an iteration count for the outer
11026 loop rather than for the current invocation of the inner loop.
11027 DSA_generate_parameters additionally can call the callback
11028 function with an 'iteration count' of -1, meaning that a
11029 candidate has passed the trial division test (when q is generated
11030 from an application-provided seed, trial division is skipped).
11033 *) New function BN_is_prime_fasttest that optionally does trial
11034 division before starting the Rabin-Miller test and has
11035 an additional BN_CTX * argument (whereas BN_is_prime always
11036 has to allocate at least one BN_CTX).
11037 'callback(1, -1, cb_arg)' is called when a number has passed the
11038 trial division stage.
11041 *) Fix for bug in CRL encoding. The validity dates weren't being handled
11045 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
11048 *) New function BN_pseudo_rand().
11051 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
11052 bignum version of BN_from_montgomery() with the working code from
11053 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
11057 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
11058 made it impossible to use the same SSL_SESSION data structure in
11059 SSL2 clients in multiple threads.
11062 *) The return value of RAND_load_file() no longer counts bytes obtained
11063 by stat(). RAND_load_file(..., -1) is new and uses the complete file
11064 to seed the PRNG (previously an explicit byte count was required).
11065 [Ulf Möller, Bodo Möller]
11067 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
11068 used (char *) instead of (void *) and had casts all over the place.
11071 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
11074 *) Retain source code compatibility for BN_prime_checks macro:
11075 BN_is_prime(..., BN_prime_checks, ...) now uses
11076 BN_prime_checks_for_size to determine the appropriate number of
11077 Rabin-Miller iterations.
11080 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
11081 DH_CHECK_P_NOT_SAFE_PRIME.
11082 (Check if this is true? OpenPGP calls them "strong".)
11085 *) Merge the functionality of "dh" and "gendh" programs into a new program
11086 "dhparam". The old programs are retained for now but will handle DH keys
11087 (instead of parameters) in future.
11090 *) Make the ciphers, s_server and s_client programs check the return values
11091 when a new cipher list is set.
11094 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
11095 ciphers. Before when the 56bit ciphers were enabled the sorting was
11098 The syntax for the cipher sorting has been extended to support sorting by
11099 cipher-strength (using the strength_bits hard coded in the tables).
11100 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
11102 Fix a bug in the cipher-command parser: when supplying a cipher command
11103 string with an "undefined" symbol (neither command nor alphanumeric
11104 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
11105 an error is flagged.
11107 Due to the strength-sorting extension, the code of the
11108 ssl_create_cipher_list() function was completely rearranged. I hope that
11109 the readability was also increased :-)
11110 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
11112 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
11113 for the first serial number and places 2 in the serial number file. This
11114 avoids problems when the root CA is created with serial number zero and
11115 the first user certificate has the same issuer name and serial number
11119 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
11120 the new code. Add documentation for this stuff.
11123 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
11124 X509_*() to X509at_*() on the grounds that they don't handle X509
11125 structures and behave in an analogous way to the X509v3 functions:
11126 they shouldn't be called directly but wrapper functions should be used
11129 So we also now have some wrapper functions that call the X509at functions
11130 when passed certificate requests. (TO DO: similar things can be done with
11131 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
11132 things. Some of these need some d2i or i2d and print functionality
11133 because they handle more complex structures.)
11136 *) Add missing #ifndefs that caused missing symbols when building libssl
11137 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
11138 NO_RSA in ssl/s2*.c.
11139 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
11141 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
11142 has a return value which indicates the quality of the random data
11143 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
11144 error queue. New function RAND_pseudo_bytes() generates output that is
11145 guaranteed to be unique but not unpredictable. RAND_add is like
11146 RAND_seed, but takes an extra argument for an entropy estimate
11147 (RAND_seed always assumes full entropy).
11150 *) Do more iterations of Rabin-Miller probable prime test (specifically,
11151 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
11152 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
11153 in crypto/bn/bn_prime.c for the complete table). This guarantees a
11154 false-positive rate of at most 2^-80 for random input.
11157 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
11160 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
11161 in the 0.9.5 release), this returns the chain
11162 from an X509_CTX structure with a dup of the stack and all
11163 the X509 reference counts upped: so the stack will exist
11164 after X509_CTX_cleanup() has been called. Modify pkcs12.c
11167 Also make SSL_SESSION_print() print out the verify return
11171 *) Add manpage for the pkcs12 command. Also change the default
11172 behaviour so MAC iteration counts are used unless the new
11173 -nomaciter option is used. This improves file security and
11174 only older versions of MSIE (4.0 for example) need it.
11177 *) Honor the no-xxx Configure options when creating .DEF files.
11180 *) Add PKCS#10 attributes to field table: challengePassword,
11181 unstructuredName and unstructuredAddress. These are taken from
11182 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
11183 international characters are used.
11185 More changes to X509_ATTRIBUTE code: allow the setting of types
11186 based on strings. Remove the 'loc' parameter when adding
11187 attributes because these will be a SET OF encoding which is sorted
11191 *) Initial changes to the 'req' utility to allow request generation
11192 automation. This will allow an application to just generate a template
11193 file containing all the field values and have req construct the
11196 Initial support for X509_ATTRIBUTE handling. Stacks of these are
11197 used all over the place including certificate requests and PKCS#7
11198 structures. They are currently handled manually where necessary with
11199 some primitive wrappers for PKCS#7. The new functions behave in a
11200 manner analogous to the X509 extension functions: they allow
11201 attributes to be looked up by NID and added.
11203 Later something similar to the X509V3 code would be desirable to
11204 automatically handle the encoding, decoding and printing of the
11205 more complex types. The string types like challengePassword can
11206 be handled by the string table functions.
11208 Also modified the multi byte string table handling. Now there is
11209 a 'global mask' which masks out certain types. The table itself
11210 can use the flag STABLE_NO_MASK to ignore the mask setting: this
11211 is useful when for example there is only one permissible type
11212 (as in countryName) and using the mask might result in no valid
11216 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
11217 SSL_get_peer_finished to allow applications to obtain the latest
11218 Finished messages sent to the peer or expected from the peer,
11219 respectively. (SSL_get_peer_finished is usually the Finished message
11220 actually received from the peer, otherwise the protocol will be aborted.)
11222 As the Finished message are message digests of the complete handshake
11223 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
11224 be used for external authentication procedures when the authentication
11225 provided by SSL/TLS is not desired or is not enough.
11228 *) Enhanced support for Alpha Linux is added. Now ./config checks if
11229 the host supports BWX extension and if Compaq C is present on the
11230 $PATH. Just exploiting of the BWX extension results in 20-30%
11231 performance kick for some algorithms, e.g. DES and RC4 to mention
11232 a couple. Compaq C in turn generates ~20% faster code for MD5 and
11236 *) Add support for MS "fast SGC". This is arguably a violation of the
11237 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
11238 weak crypto and after checking the certificate is SGC a second one
11239 with strong crypto. MS SGC stops the first handshake after receiving
11240 the server certificate message and sends a second client hello. Since
11241 a server will typically do all the time consuming operations before
11242 expecting any further messages from the client (server key exchange
11243 is the most expensive) there is little difference between the two.
11245 To get OpenSSL to support MS SGC we have to permit a second client
11246 hello message after we have sent server done. In addition we have to
11247 reset the MAC if we do get this second client hello.
11250 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
11251 if a DER encoded private key is RSA or DSA traditional format. Changed
11252 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
11253 format DER encoded private key. Newer code should use PKCS#8 format which
11254 has the key type encoded in the ASN1 structure. Added DER private key
11255 support to pkcs8 application.
11258 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
11259 ciphersuites has been selected (as required by the SSL 3/TLS 1
11260 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
11261 is set, we interpret this as a request to violate the specification
11262 (the worst that can happen is a handshake failure, and 'correct'
11263 behaviour would result in a handshake failure anyway).
11266 *) In SSL_CTX_add_session, take into account that there might be multiple
11267 SSL_SESSION structures with the same session ID (e.g. when two threads
11268 concurrently obtain them from an external cache).
11269 The internal cache can handle only one SSL_SESSION with a given ID,
11270 so if there's a conflict, we now throw out the old one to achieve
11274 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
11275 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
11276 some routines that use cipher OIDs: some ciphers do not have OIDs
11277 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
11281 *) Simplify the trust setting structure and code. Now we just have
11282 two sequences of OIDs for trusted and rejected settings. These will
11283 typically have values the same as the extended key usage extension
11284 and any application specific purposes.
11286 The trust checking code now has a default behaviour: it will just
11287 check for an object with the same NID as the passed id. Functions can
11288 be provided to override either the default behaviour or the behaviour
11289 for a given id. SSL client, server and email already have functions
11290 in place for compatibility: they check the NID and also return "trusted"
11291 if the certificate is self signed.
11294 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
11295 traditional format into an EVP_PKEY structure.
11298 *) Add a password callback function PEM_cb() which either prompts for
11299 a password if usr_data is NULL or otherwise assumes it is a null
11300 terminated password. Allow passwords to be passed on command line
11301 environment or config files in a few more utilities.
11304 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
11305 keys. Add some short names for PKCS#8 PBE algorithms and allow them
11306 to be specified on the command line for the pkcs8 and pkcs12 utilities.
11307 Update documentation.
11310 *) Support for ASN1 "NULL" type. This could be handled before by using
11311 ASN1_TYPE but there wasn't any function that would try to read a NULL
11312 and produce an error if it couldn't. For compatibility we also have
11313 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
11314 don't allocate anything because they don't need to.
11317 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
11319 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
11321 *) Rebuild of the memory allocation routines used by OpenSSL code and
11322 possibly others as well. The purpose is to make an interface that
11323 provide hooks so anyone can build a separate set of allocation and
11324 deallocation routines to be used by OpenSSL, for example memory
11325 pool implementations, or something else, which was previously hard
11326 since Malloc(), Realloc() and Free() were defined as macros having
11327 the values malloc, realloc and free, respectively (except for Win32
11328 compilations). The same is provided for memory debugging code.
11329 OpenSSL already comes with functionality to find memory leaks, but
11330 this gives people a chance to debug other memory problems.
11332 With these changes, a new set of functions and macros have appeared:
11334 CRYPTO_set_mem_debug_functions() [F]
11335 CRYPTO_get_mem_debug_functions() [F]
11336 CRYPTO_dbg_set_options() [F]
11337 CRYPTO_dbg_get_options() [F]
11338 CRYPTO_malloc_debug_init() [M]
11340 The memory debug functions are NULL by default, unless the library
11341 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
11342 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
11343 gives the standard debugging functions that come with OpenSSL) or
11344 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
11345 provided by the library user) must be used. When the standard
11346 debugging functions are used, CRYPTO_dbg_set_options can be used to
11347 request additional information:
11348 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
11349 the CRYPTO_MDEBUG_xxx macro when compiling the library.
11351 Also, things like CRYPTO_set_mem_functions will always give the
11352 expected result (the new set of functions is used for allocation
11353 and deallocation) at all times, regardless of platform and compiler
11356 To finish it up, some functions that were never use in any other
11357 way than through macros have a new API and new semantic:
11359 CRYPTO_dbg_malloc()
11360 CRYPTO_dbg_realloc()
11363 All macros of value have retained their old syntax.
11364 [Richard Levitte and Bodo Moeller]
11366 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
11367 ordering of SMIMECapabilities wasn't in "strength order" and there
11368 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
11372 *) Some ASN1 types with illegal zero length encoding (INTEGER,
11373 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
11374 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
11376 *) Merge in my S/MIME library for OpenSSL. This provides a simple
11377 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
11378 functionality to handle multipart/signed properly) and a utility
11379 called 'smime' to call all this stuff. This is based on code I
11380 originally wrote for Celo who have kindly allowed it to be
11381 included in OpenSSL.
11384 *) Add variants des_set_key_checked and des_set_key_unchecked of
11385 des_set_key (aka des_key_sched). Global variable des_check_key
11386 decides which of these is called by des_set_key; this way
11387 des_check_key behaves as it always did, but applications and
11388 the library itself, which was buggy for des_check_key == 1,
11389 have a cleaner way to pick the version they need.
11392 *) New function PKCS12_newpass() which changes the password of a
11396 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
11397 dynamic mix. In both cases the ids can be used as an index into the
11398 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
11399 functions so they accept a list of the field values and the
11400 application doesn't need to directly manipulate the X509_TRUST
11404 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
11408 *) Modify the way the V3 extension code looks up extensions. This now
11409 works in a similar way to the object code: we have some "standard"
11410 extensions in a static table which is searched with OBJ_bsearch()
11411 and the application can add dynamic ones if needed. The file
11412 crypto/x509v3/ext_dat.h now has the info: this file needs to be
11413 updated whenever a new extension is added to the core code and kept
11414 in ext_nid order. There is a simple program 'tabtest.c' which checks
11415 this. New extensions are not added too often so this file can readily
11416 be maintained manually.
11418 There are two big advantages in doing things this way. The extensions
11419 can be looked up immediately and no longer need to be "added" using
11420 X509V3_add_standard_extensions(): this function now does nothing.
11421 [Side note: I get *lots* of email saying the extension code doesn't
11422 work because people forget to call this function]
11423 Also no dynamic allocation is done unless new extensions are added:
11424 so if we don't add custom extensions there is no need to call
11425 X509V3_EXT_cleanup().
11428 *) Modify enc utility's salting as follows: make salting the default. Add a
11429 magic header, so unsalted files fail gracefully instead of just decrypting
11430 to garbage. This is because not salting is a big security hole, so people
11431 should be discouraged from doing it.
11434 *) Fixes and enhancements to the 'x509' utility. It allowed a message
11435 digest to be passed on the command line but it only used this
11436 parameter when signing a certificate. Modified so all relevant
11437 operations are affected by the digest parameter including the
11438 -fingerprint and -x509toreq options. Also -x509toreq choked if a
11439 DSA key was used because it didn't fix the digest.
11442 *) Initial certificate chain verify code. Currently tests the untrusted
11443 certificates for consistency with the verify purpose (which is set
11444 when the X509_STORE_CTX structure is set up) and checks the pathlength.
11446 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
11447 this is because it will reject chains with invalid extensions whereas
11448 every previous version of OpenSSL and SSLeay made no checks at all.
11450 Trust code: checks the root CA for the relevant trust settings. Trust
11451 settings have an initial value consistent with the verify purpose: e.g.
11452 if the verify purpose is for SSL client use it expects the CA to be
11453 trusted for SSL client use. However the default value can be changed to
11454 permit custom trust settings: one example of this would be to only trust
11455 certificates from a specific "secure" set of CAs.
11457 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
11458 which should be used for version portability: especially since the
11459 verify structure is likely to change more often now.
11461 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
11462 to set them. If not set then assume SSL clients will verify SSL servers
11465 Two new options to the verify program: -untrusted allows a set of
11466 untrusted certificates to be passed in and -purpose which sets the
11467 intended purpose of the certificate. If a purpose is set then the
11468 new chain verify code is used to check extension consistency.
11471 *) Support for the authority information access extension.
11474 *) Modify RSA and DSA PEM read routines to transparently handle
11475 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
11476 public keys in a format compatible with certificate
11477 SubjectPublicKeyInfo structures. Unfortunately there were already
11478 functions called *_PublicKey_* which used various odd formats so
11479 these are retained for compatibility: however the DSA variants were
11480 never in a public release so they have been deleted. Changed dsa/rsa
11481 utilities to handle the new format: note no releases ever handled public
11482 keys so we should be OK.
11484 The primary motivation for this change is to avoid the same fiasco
11485 that dogs private keys: there are several incompatible private key
11486 formats some of which are standard and some OpenSSL specific and
11487 require various evil hacks to allow partial transparent handling and
11488 even then it doesn't work with DER formats. Given the option anything
11489 other than PKCS#8 should be dumped: but the other formats have to
11490 stay in the name of compatibility.
11492 With public keys and the benefit of hindsight one standard format
11493 is used which works with EVP_PKEY, RSA or DSA structures: though
11494 it clearly returns an error if you try to read the wrong kind of key.
11496 Added a -pubkey option to the 'x509' utility to output the public key.
11497 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
11498 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
11499 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
11500 that do the same as the EVP_PKEY_assign_*() except they up the
11501 reference count of the added key (they don't "swallow" the
11505 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
11506 CRLs would fail if the file contained no certificates or no CRLs:
11507 added a new function to read in both types and return the number
11508 read: this means that if none are read it will be an error. The
11509 DER versions of the certificate and CRL reader would always fail
11510 because it isn't possible to mix certificates and CRLs in DER format
11511 without choking one or the other routine. Changed this to just read
11512 a certificate: this is the best we can do. Also modified the code
11513 in apps/verify.c to take notice of return codes: it was previously
11514 attempting to read in certificates from NULL pointers and ignoring
11515 any errors: this is one reason why the cert and CRL reader seemed
11516 to work. It doesn't check return codes from the default certificate
11517 routines: these may well fail if the certificates aren't installed.
11520 *) Code to support otherName option in GeneralName.
11523 *) First update to verify code. Change the verify utility
11524 so it warns if it is passed a self signed certificate:
11525 for consistency with the normal behaviour. X509_verify
11526 has been modified to it will now verify a self signed
11527 certificate if *exactly* the same certificate appears
11528 in the store: it was previously impossible to trust a
11529 single self signed certificate. This means that:
11530 openssl verify ss.pem
11531 now gives a warning about a self signed certificate but
11532 openssl verify -CAfile ss.pem ss.pem
11536 *) For servers, store verify_result in SSL_SESSION data structure
11537 (and add it to external session representation).
11538 This is needed when client certificate verifications fails,
11539 but an application-provided verification callback (set by
11540 SSL_CTX_set_cert_verify_callback) allows accepting the session
11541 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
11542 but returns 1): When the session is reused, we have to set
11543 ssl->verify_result to the appropriate error code to avoid
11545 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
11547 *) Fix a bug in the new PKCS#7 code: it didn't consider the
11548 case in PKCS7_dataInit() where the signed PKCS7 structure
11549 didn't contain any existing data because it was being created.
11550 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
11552 *) Add a salt to the key derivation routines in enc.c. This
11553 forms the first 8 bytes of the encrypted file. Also add a
11554 -S option to allow a salt to be input on the command line.
11557 *) New function X509_cmp(). Oddly enough there wasn't a function
11558 to compare two certificates. We do this by working out the SHA1
11559 hash and comparing that. X509_cmp() will be needed by the trust
11563 *) SSL_get1_session() is like SSL_get_session(), but increments
11564 the reference count in the SSL_SESSION returned.
11565 [Geoff Thorpe <geoff@eu.c2.net>]
11567 *) Fix for 'req': it was adding a null to request attributes.
11568 Also change the X509_LOOKUP and X509_INFO code to handle
11569 certificate auxiliary information.
11572 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
11576 *) Add the possibility to add extra information to the memory leak
11577 detecting output, to form tracebacks, showing from where each
11578 allocation was originated: CRYPTO_push_info("constant string") adds
11579 the string plus current file name and line number to a per-thread
11580 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
11581 is like calling CYRPTO_pop_info() until the stack is empty.
11582 Also updated memory leak detection code to be multi-thread-safe.
11585 *) Add options -text and -noout to pkcs7 utility and delete the
11586 encryption options which never did anything. Update docs.
11589 *) Add options to some of the utilities to allow the pass phrase
11590 to be included on either the command line (not recommended on
11591 OSes like Unix) or read from the environment. Update the
11592 manpages and fix a few bugs.
11595 *) Add a few manpages for some of the openssl commands.
11598 *) Fix the -revoke option in ca. It was freeing up memory twice,
11599 leaking and not finding already revoked certificates.
11602 *) Extensive changes to support certificate auxiliary information.
11603 This involves the use of X509_CERT_AUX structure and X509_AUX
11604 functions. An X509_AUX function such as PEM_read_X509_AUX()
11605 can still read in a certificate file in the usual way but it
11606 will also read in any additional "auxiliary information". By
11607 doing things this way a fair degree of compatibility can be
11608 retained: existing certificates can have this information added
11609 using the new 'x509' options.
11611 Current auxiliary information includes an "alias" and some trust
11612 settings. The trust settings will ultimately be used in enhanced
11613 certificate chain verification routines: currently a certificate
11614 can only be trusted if it is self signed and then it is trusted
11618 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
11619 The problem was that one of the replacement routines had not been working
11620 since SSLeay releases. For now the offending routine has been replaced
11621 with non-optimised assembler. Even so, this now gives around 95%
11622 performance improvement for 1024 bit RSA signs.
11625 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
11626 handling. Most clients have the effective key size in bits equal to
11627 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
11628 A few however don't do this and instead use the size of the decrypted key
11629 to determine the RC2 key length and the AlgorithmIdentifier to determine
11630 the effective key length. In this case the effective key length can still
11631 be 40 bits but the key length can be 168 bits for example. This is fixed
11632 by manually forcing an RC2 key into the EVP_PKEY structure because the
11633 EVP code can't currently handle unusual RC2 key sizes: it always assumes
11634 the key length and effective key length are equal.
11637 *) Add a bunch of functions that should simplify the creation of
11638 X509_NAME structures. Now you should be able to do:
11639 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
11640 and have it automatically work out the correct field type and fill in
11641 the structures. The more adventurous can try:
11642 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
11643 and it will (hopefully) work out the correct multibyte encoding.
11646 *) Change the 'req' utility to use the new field handling and multibyte
11647 copy routines. Before the DN field creation was handled in an ad hoc
11648 way in req, ca, and x509 which was rather broken and didn't support
11649 BMPStrings or UTF8Strings. Since some software doesn't implement
11650 BMPStrings or UTF8Strings yet, they can be enabled using the config file
11651 using the dirstring_type option. See the new comment in the default
11652 openssl.cnf for more info.
11655 *) Make crypto/rand/md_rand.c more robust:
11656 - Assure unique random numbers after fork().
11657 - Make sure that concurrent threads access the global counter and
11658 md serializably so that we never lose entropy in them
11659 or use exactly the same state in multiple threads.
11660 Access to the large state is not always serializable because
11661 the additional locking could be a performance killer, and
11662 md should be large enough anyway.
11665 *) New file apps/app_rand.c with commonly needed functionality
11666 for handling the random seed file.
11668 Use the random seed file in some applications that previously did not:
11670 dsaparam -genkey (which also ignored its '-rand' option),
11673 x509 (when signing).
11674 Except on systems with /dev/urandom, it is crucial to have a random
11675 seed file at least for key creation, DSA signing, and for DH exchanges;
11676 for RSA signatures we could do without one.
11678 gendh and gendsa (unlike genrsa) used to read only the first byte
11679 of each file listed in the '-rand' option. The function as previously
11680 found in genrsa is now in app_rand.c and is used by all programs
11681 that support '-rand'.
11684 *) In RAND_write_file, use mode 0600 for creating files;
11685 don't just chmod when it may be too late.
11688 *) Report an error from X509_STORE_load_locations
11689 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
11692 *) New function ASN1_mbstring_copy() this copies a string in either
11693 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
11694 into an ASN1_STRING type. A mask of permissible types is passed
11695 and it chooses the "minimal" type to use or an error if not type
11699 *) Add function equivalents to the various macros in asn1.h. The old
11700 macros are retained with an M_ prefix. Code inside the library can
11701 use the M_ macros. External code (including the openssl utility)
11702 should *NOT* in order to be "shared library friendly".
11705 *) Add various functions that can check a certificate's extensions
11706 to see if it usable for various purposes such as SSL client,
11707 server or S/MIME and CAs of these types. This is currently
11708 VERY EXPERIMENTAL but will ultimately be used for certificate chain
11709 verification. Also added a -purpose flag to x509 utility to
11710 print out all the purposes.
11713 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
11717 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
11718 for, obtain and decode and extension and obtain its critical flag.
11719 This allows all the necessary extension code to be handled in a
11720 single function call.
11723 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
11724 platforms. See crypto/rc4/rc4_enc.c for further details.
11727 *) New -noout option to asn1parse. This causes no output to be produced
11728 its main use is when combined with -strparse and -out to extract data
11729 from a file (which may not be in ASN.1 format).
11732 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
11733 when producing the local key id.
11734 [Richard Levitte <levitte@stacken.kth.se>]
11736 *) New option -dhparam in s_server. This allows a DH parameter file to be
11737 stated explicitly. If it is not stated then it tries the first server
11738 certificate file. The previous behaviour hard coded the filename
11742 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
11743 a public key to be input or output. For example:
11744 openssl rsa -in key.pem -pubout -out pubkey.pem
11745 Also added necessary DSA public key functions to handle this.
11748 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
11749 in the message. This was handled by allowing
11750 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
11751 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
11753 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
11754 to the end of the strings whereas this didn't. This would cause problems
11755 if strings read with d2i_ASN1_bytes() were later modified.
11756 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
11758 *) Fix for base64 decode bug. When a base64 bio reads only one line of
11759 data and it contains EOF it will end up returning an error. This is
11760 caused by input 46 bytes long. The cause is due to the way base64
11761 BIOs find the start of base64 encoded data. They do this by trying a
11762 trial decode on each line until they find one that works. When they
11763 do a flag is set and it starts again knowing it can pass all the
11764 data directly through the decoder. Unfortunately it doesn't reset
11765 the context it uses. This means that if EOF is reached an attempt
11766 is made to pass two EOFs through the context and this causes the
11767 resulting error. This can also cause other problems as well. As is
11768 usual with these problems it takes *ages* to find and the fix is
11769 trivial: move one line.
11770 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
11772 *) Ugly workaround to get s_client and s_server working under Windows. The
11773 old code wouldn't work because it needed to select() on sockets and the
11774 tty (for keypresses and to see if data could be written). Win32 only
11775 supports select() on sockets so we select() with a 1s timeout on the
11776 sockets and then see if any characters are waiting to be read, if none
11777 are present then we retry, we also assume we can always write data to
11778 the tty. This isn't nice because the code then blocks until we've
11779 received a complete line of data and it is effectively polling the
11780 keyboard at 1s intervals: however it's quite a bit better than not
11781 working at all :-) A dedicated Windows application might handle this
11782 with an event loop for example.
11785 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
11786 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
11787 will be called when RSA_sign() and RSA_verify() are used. This is useful
11788 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
11789 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
11790 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
11791 This necessitated the support of an extra signature type NID_md5_sha1
11792 for SSL signatures and modifications to the SSL library to use it instead
11793 of calling RSA_public_decrypt() and RSA_private_encrypt().
11796 *) Add new -verify -CAfile and -CApath options to the crl program, these
11797 will lookup a CRL issuers certificate and verify the signature in a
11798 similar way to the verify program. Tidy up the crl program so it
11799 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
11800 less strict. It will now permit CRL extensions even if it is not
11801 a V2 CRL: this will allow it to tolerate some broken CRLs.
11804 *) Initialize all non-automatic variables each time one of the openssl
11805 sub-programs is started (this is necessary as they may be started
11806 multiple times from the "OpenSSL>" prompt).
11807 [Lennart Bang, Bodo Moeller]
11809 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
11810 removing all other RSA functionality (this is what NO_RSA does). This
11811 is so (for example) those in the US can disable those operations covered
11812 by the RSA patent while allowing storage and parsing of RSA keys and RSA
11816 *) Non-copying interface to BIO pairs.
11817 (still largely untested)
11820 *) New function ASN1_tag2str() to convert an ASN1 tag to a descriptive
11821 ASCII string. This was handled independently in various places before.
11824 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
11825 UTF8 strings a character at a time.
11828 *) Use client_version from client hello to select the protocol
11829 (s23_srvr.c) and for RSA client key exchange verification
11830 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
11833 *) Add various utility functions to handle SPKACs, these were previously
11834 handled by poking round in the structure internals. Added new function
11835 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
11836 print, verify and generate SPKACs. Based on an original idea from
11837 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
11840 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
11843 *) Allow the config file extension section to be overwritten on the
11844 command line. Based on an original idea from Massimiliano Pala
11845 <madwolf@comune.modena.it>. The new option is called -extensions
11846 and can be applied to ca, req and x509. Also -reqexts to override
11847 the request extensions in req and -crlexts to override the crl extensions
11851 *) Add new feature to the SPKAC handling in ca. Now you can include
11852 the same field multiple times by preceding it by "XXXX." for example:
11855 this is the same syntax as used in the req config file.
11858 *) Allow certificate extensions to be added to certificate requests. These
11859 are specified in a 'req_extensions' option of the req section of the
11860 config file. They can be printed out with the -text option to req but
11861 are otherwise ignored at present.
11864 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
11865 data read consists of only the final block it would not decrypted because
11866 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
11867 A misplaced 'break' also meant the decrypted final block might not be
11868 copied until the next read.
11871 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
11872 a few extra parameters to the DH structure: these will be useful if
11873 for example we want the value of 'q' or implement X9.42 DH.
11876 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
11877 provides hooks that allow the default DSA functions or functions on a
11878 "per key" basis to be replaced. This allows hardware acceleration and
11879 hardware key storage to be handled without major modification to the
11880 library. Also added low level modexp hooks and CRYPTO_EX structure and
11881 associated functions.
11884 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
11885 as "read only": it can't be written to and the buffer it points to will
11886 not be freed. Reading from a read only BIO is much more efficient than
11887 a normal memory BIO. This was added because there are several times when
11888 an area of memory needs to be read from a BIO. The previous method was
11889 to create a memory BIO and write the data to it, this results in two
11890 copies of the data and an O(n^2) reading algorithm. There is a new
11891 function BIO_new_mem_buf() which creates a read only memory BIO from
11892 an area of memory. Also modified the PKCS#7 routines to use read only
11896 *) Bugfix: ssl23_get_client_hello did not work properly when called in
11897 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
11898 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
11899 but a retry condition occurred while trying to read the rest.
11902 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
11903 NID_pkcs7_encrypted by default: this was wrong since this should almost
11904 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
11905 the encrypted data type: this is a more sensible place to put it and it
11906 allows the PKCS#12 code to be tidied up that duplicated this
11910 *) Changed obj_dat.pl script so it takes its input and output files on
11911 the command line. This should avoid shell escape redirection problems
11915 *) Initial support for certificate extension requests, these are included
11916 in things like Xenroll certificate requests. Included functions to allow
11917 extensions to be obtained and added.
11920 *) -crlf option to s_client and s_server for sending newlines as
11921 CRLF (as required by many protocols).
11924 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
11926 *) Install libRSAglue.a when OpenSSL is built with RSAref.
11927 [Ralf S. Engelschall]
11929 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
11930 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
11932 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
11936 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
11937 DH parameters/keys (q is lost during that conversion, but the resulting
11938 DH parameters contain its length).
11940 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
11941 much faster than DH_generate_parameters (which creates parameters
11942 where p = 2*q + 1), and also the smaller q makes DH computations
11943 much more efficient (160-bit exponentiation instead of 1024-bit
11944 exponentiation); so this provides a convenient way to support DHE
11945 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
11946 utter importance to use
11947 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
11949 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
11950 when such DH parameters are used, because otherwise small subgroup
11951 attacks may become possible!
11954 *) Avoid memory leak in i2d_DHparams.
11957 *) Allow the -k option to be used more than once in the enc program:
11958 this allows the same encrypted message to be read by multiple recipients.
11961 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
11962 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
11963 it will always use the numerical form of the OID, even if it has a short
11967 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
11968 method only got called if p,q,dmp1,dmq1,iqmp components were present,
11969 otherwise bn_mod_exp was called. In the case of hardware keys for example
11970 no private key components need be present and it might store extra data
11971 in the RSA structure, which cannot be accessed from bn_mod_exp.
11972 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
11973 private key operations.
11976 *) Added support for SPARC Linux.
11979 *) pem_password_cb function type incompatibly changed from
11980 typedef int pem_password_cb(char *buf, int size, int rwflag);
11982 ....(char *buf, int size, int rwflag, void *userdata);
11983 so that applications can pass data to their callbacks:
11984 The PEM[_ASN1]_{read,write}... functions and macros now take an
11985 additional void * argument, which is just handed through whenever
11986 the password callback is called.
11987 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
11989 New function SSL_CTX_set_default_passwd_cb_userdata.
11991 Compatibility note: As many C implementations push function arguments
11992 onto the stack in reverse order, the new library version is likely to
11993 interoperate with programs that have been compiled with the old
11994 pem_password_cb definition (PEM_whatever takes some data that
11995 happens to be on the stack as its last argument, and the callback
11996 just ignores this garbage); but there is no guarantee whatsoever that
11999 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
12000 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
12001 problems not only on Windows, but also on some Unix platforms.
12002 To avoid problematic command lines, these definitions are now in an
12003 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
12004 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
12007 *) MIPS III/IV assembler module is reimplemented.
12010 *) More DES library cleanups: remove references to srand/rand and
12011 delete an unused file.
12014 *) Add support for the free Netwide assembler (NASM) under Win32,
12015 since not many people have MASM (ml) and it can be hard to obtain.
12016 This is currently experimental but it seems to work OK and pass all
12017 the tests. Check out INSTALL.W32 for info.
12020 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
12021 without temporary keys kept an extra copy of the server key,
12022 and connections with temporary keys did not free everything in case
12026 *) New function RSA_check_key and new openssl rsa option -check
12027 for verifying the consistency of RSA keys.
12028 [Ulf Moeller, Bodo Moeller]
12030 *) Various changes to make Win32 compile work:
12031 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
12032 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
12033 comparison" warnings.
12034 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
12037 *) Add a debugging option to PKCS#5 v2 key generation function: when
12038 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
12039 derived keys are printed to stderr.
12042 *) Copy the flags in ASN1_STRING_dup().
12043 [Roman E. Pavlov <pre@mo.msk.ru>]
12045 *) The x509 application mishandled signing requests containing DSA
12046 keys when the signing key was also DSA and the parameters didn't match.
12048 It was supposed to omit the parameters when they matched the signing key:
12049 the verifying software was then supposed to automatically use the CA's
12050 parameters if they were absent from the end user certificate.
12052 Omitting parameters is no longer recommended. The test was also
12053 the wrong way round! This was probably due to unusual behaviour in
12054 EVP_cmp_parameters() which returns 1 if the parameters match.
12055 This meant that parameters were omitted when they *didn't* match and
12056 the certificate was useless. Certificates signed with 'ca' didn't have
12058 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
12060 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
12061 The interface is as follows:
12062 Applications can use
12063 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
12064 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
12065 "off" is now the default.
12066 The library internally uses
12067 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
12068 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
12069 to disable memory-checking temporarily.
12071 Some inconsistent states that previously were possible (and were
12072 even the default) are now avoided.
12074 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
12075 with each memory chunk allocated; this is occasionally more helpful
12076 than just having a counter.
12078 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
12080 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
12084 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
12085 which largely parallels "options", but is for changing API behaviour,
12086 whereas "options" are about protocol behaviour.
12087 Initial "mode" flags are:
12089 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
12090 a single record has been written.
12091 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
12092 retries use the same buffer location.
12093 (But all of the contents must be
12097 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
12100 *) Fix problems with no-hmac etc.
12101 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
12103 *) New functions RSA_get_default_method(), RSA_set_method() and
12104 RSA_get_method(). These allows replacement of RSA_METHODs without having
12105 to mess around with the internals of an RSA structure.
12108 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
12109 Also really enable memory leak checks in openssl.c and in some
12111 [Chad C. Mulligan, Bodo Moeller]
12113 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
12114 up the length of negative integers. This has now been simplified to just
12115 store the length when it is first determined and use it later, rather
12116 than trying to keep track of where data is copied and updating it to
12118 [Steve Henson, reported by Brien Wheeler
12119 <bwheeler@authentica-security.com>]
12121 *) Add a new function PKCS7_signatureVerify. This allows the verification
12122 of a PKCS#7 signature but with the signing certificate passed to the
12123 function itself. This contrasts with PKCS7_dataVerify which assumes the
12124 certificate is present in the PKCS#7 structure. This isn't always the
12125 case: certificates can be omitted from a PKCS#7 structure and be
12126 distributed by "out of band" means (such as a certificate database).
12129 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
12130 function prototypes in pem.h, also change util/mkdef.pl to add the
12131 necessary function names.
12134 *) mk1mf.pl (used by Windows builds) did not properly read the
12135 options set by Configure in the top level Makefile, and Configure
12136 was not even able to write more than one option correctly.
12137 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
12140 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
12141 file to be loaded from a BIO or FILE pointer. The BIO version will
12142 for example allow memory BIOs to contain config info.
12145 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
12146 Whoever hopes to achieve shared-library compatibility across versions
12147 must use this, not the compile-time macro.
12148 (Exercise 0.9.4: Which is the minimum library version required by
12150 Note: All this applies only to multi-threaded programs, others don't
12154 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
12155 through a BIO pair triggered the default case, i.e.
12156 SSLerr(...,SSL_R_UNKNOWN_STATE).
12159 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
12160 can use the SSL library even if none of the specific BIOs is
12164 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
12165 for the encoded length.
12166 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
12168 *) Add initial documentation of the X509V3 functions.
12171 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
12172 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
12173 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
12174 secure PKCS#8 private key format with a high iteration count.
12177 *) Fix determination of Perl interpreter: A perl or perl5
12178 _directory_ in $PATH was also accepted as the interpreter.
12179 [Ralf S. Engelschall]
12181 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
12182 wrong with it but it was very old and did things like calling
12183 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
12184 unusual formatting.
12187 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
12188 to use the new extension code.
12191 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
12192 with macros. This should make it easier to change their form, add extra
12193 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
12197 *) Add to configuration table a new entry that can specify an alternative
12198 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
12199 according to Mark Crispin <MRC@Panda.COM>.
12203 *) DES CBC did not update the IV. Weird.
12206 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
12207 Changing the behaviour of the former might break existing programs --
12208 where IV updating is needed, des_ncbc_encrypt can be used.
12211 *) When bntest is run from "make test" it drives bc to check its
12212 calculations, as well as internally checking them. If an internal check
12213 fails, it needs to cause bc to give a non-zero result or make test carries
12214 on without noticing the failure. Fixed.
12217 *) DES library cleanups.
12220 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
12221 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
12222 ciphers. NOTE: although the key derivation function has been verified
12223 against some published test vectors it has not been extensively tested
12224 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
12228 *) Instead of "mkdir -p", which is not fully portable, use new
12229 Perl script "util/mkdir-p.pl".
12232 *) Rewrite the way password based encryption (PBE) is handled. It used to
12233 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
12234 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
12235 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
12236 the 'parameter' field of the AlgorithmIdentifier is passed to the
12237 underlying key generation function so it must do its own ASN1 parsing.
12238 This has also changed the EVP_PBE_CipherInit() function which now has a
12239 'parameter' argument instead of literal salt and iteration count values
12240 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
12243 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
12244 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
12245 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
12246 KEY" because this clashed with PKCS#8 unencrypted string. Since this
12247 value was just used as a "magic string" and not used directly its
12248 value doesn't matter.
12251 *) Introduce some semblance of const correctness to BN. Shame C doesn't
12255 *) "linux-sparc64" configuration (ultrapenguin).
12256 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
12257 "linux-sparc" configuration.
12258 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
12260 *) config now generates no-xxx options for missing ciphers.
12263 *) Support the EBCDIC character set (work in progress).
12264 File ebcdic.c not yet included because it has a different license.
12265 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
12267 *) Support BS2000/OSD-POSIX.
12268 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
12270 *) Make callbacks for key generation use void * instead of char *.
12273 *) Make S/MIME samples compile (not yet tested).
12276 *) Additional typesafe stacks.
12279 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
12283 Changes between 0.9.3 and 0.9.3a [29 May 1999]
12285 *) New configuration variant "sco5-gcc".
12287 *) Updated some demos.
12288 [Sean O Riordain, Wade Scholine]
12290 *) Add missing BIO_free at exit of pkcs12 application.
12293 *) Fix memory leak in conf.c.
12296 *) Updates for Win32 to assembler version of MD5.
12299 *) Set #! path to perl in apps/der_chop to where we found it
12300 instead of using a fixed path.
12303 *) SHA library changes for irix64-mips4-cc.
12306 *) Improvements for VMS support.
12310 Changes between 0.9.2b and 0.9.3 [24 May 1999]
12312 *) Bignum library bug fix. IRIX 6 passes "make test" now!
12313 This also avoids the problems with SC4.2 and unpatched SC5.
12314 [Andy Polyakov <appro@fy.chalmers.se>]
12316 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
12317 These are required because of the typesafe stack would otherwise break
12318 existing code. If old code used a structure member which used to be STACK
12319 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
12320 sk_num or sk_value it would produce an error because the num, data members
12321 are not present in STACK_OF. Now it just produces a warning. sk_set
12322 replaces the old method of assigning a value to sk_value
12323 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
12324 that does this will no longer work (and should use sk_set instead) but
12325 this could be regarded as a "questionable" behaviour anyway.
12328 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
12329 correctly handle encrypted S/MIME data.
12332 *) Change type of various DES function arguments from des_cblock
12333 (which means, in function argument declarations, pointer to char)
12334 to des_cblock * (meaning pointer to array with 8 char elements),
12335 which allows the compiler to do more typechecking; it was like
12336 that back in SSLeay, but with lots of ugly casts.
12338 Introduce new type const_des_cblock.
12341 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
12342 problems: find RecipientInfo structure that matches recipient certificate
12343 and initialise the ASN1 structures properly based on passed cipher.
12346 *) Belatedly make the BN tests actually check the results.
12349 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
12350 to and from BNs: it was completely broken. New compilation option
12351 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
12352 key elements as negative integers.
12355 *) Reorganize and speed up MD5.
12356 [Andy Polyakov <appro@fy.chalmers.se>]
12359 [Richard Levitte <richard@levitte.org>]
12361 *) New option -out to asn1parse to allow the parsed structure to be
12362 output to a file. This is most useful when combined with the -strparse
12363 option to examine the output of things like OCTET STRINGS.
12366 *) Make SSL library a little more fool-proof by not requiring any longer
12367 that SSL_set_{accept,connect}_state be called before
12368 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
12369 in many applications because usually everything *appeared* to work as
12370 intended anyway -- now it really works as intended).
12373 *) Move openssl.cnf out of lib/.
12376 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
12377 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
12378 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
12379 [Ralf S. Engelschall]
12381 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
12382 handle PKCS#7 enveloped data properly.
12383 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
12385 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
12386 copying pointers. The cert_st handling is changed by this in
12387 various ways (and thus what used to be known as ctx->default_cert
12388 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
12389 any longer when s->cert does not give us what we need).
12390 ssl_cert_instantiate becomes obsolete by this change.
12391 As soon as we've got the new code right (possibly it already is?),
12392 we have solved a couple of bugs of the earlier code where s->cert
12393 was used as if it could not have been shared with other SSL structures.
12395 Note that using the SSL API in certain dirty ways now will result
12396 in different behaviour than observed with earlier library versions:
12397 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
12398 does not influence s as it used to.
12400 In order to clean up things more thoroughly, inside SSL_SESSION
12401 we don't use CERT any longer, but a new structure SESS_CERT
12402 that holds per-session data (if available); currently, this is
12403 the peer's certificate chain and, for clients, the server's certificate
12404 and temporary key. CERT holds only those values that can have
12405 meaningful defaults in an SSL_CTX.
12408 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
12409 from the internal representation. Various PKCS#7 fixes: remove some
12410 evil casts and set the enc_dig_alg field properly based on the signing
12414 *) Allow PKCS#12 password to be set from the command line or the
12415 environment. Let 'ca' get its config file name from the environment
12416 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
12420 *) Allow certificate policies extension to use an IA5STRING for the
12421 organization field. This is contrary to the PKIX definition but
12422 VeriSign uses it and IE5 only recognises this form. Document 'x509'
12426 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
12427 without disallowing inline assembler and the like for non-pedantic builds.
12430 *) Support Borland C++ builder.
12431 [Janez Jere <jj@void.si>, modified by Ulf Möller]
12433 *) Support Mingw32.
12436 *) SHA-1 cleanups and performance enhancements.
12437 [Andy Polyakov <appro@fy.chalmers.se>]
12439 *) Sparc v8plus assembler for the bignum library.
12440 [Andy Polyakov <appro@fy.chalmers.se>]
12442 *) Accept any -xxx and +xxx compiler options in Configure.
12445 *) Update HPUX configuration.
12448 *) Add missing sk_<type>_unshift() function to safestack.h
12449 [Ralf S. Engelschall]
12451 *) New function SSL_CTX_use_certificate_chain_file that sets the
12452 "extra_cert"s in addition to the certificate. (This makes sense
12453 only for "PEM" format files, as chains as a whole are not
12457 *) Support verify_depth from the SSL API.
12458 x509_vfy.c had what can be considered an off-by-one-error:
12459 Its depth (which was not part of the external interface)
12460 was actually counting the number of certificates in a chain;
12461 now it really counts the depth.
12464 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
12465 instead of X509err, which often resulted in confusing error
12466 messages since the error codes are not globally unique
12467 (e.g. an alleged error in ssl3_accept when a certificate
12468 didn't match the private key).
12470 *) New function SSL_CTX_set_session_id_context that allows to set a default
12471 value (so that you don't need SSL_set_session_id_context for each
12472 connection using the SSL_CTX).
12475 *) OAEP decoding bug fix.
12478 *) Support INSTALL_PREFIX for package builders, as proposed by
12482 *) New Configure options "threads" and "no-threads". For systems
12483 where the proper compiler options are known (currently Solaris
12484 and Linux), "threads" is the default.
12487 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
12490 *) Install various scripts to $(OPENSSLDIR)/misc, not to
12491 $(INSTALLTOP)/bin -- they shouldn't clutter directories
12492 such as /usr/local/bin.
12495 *) "make linux-shared" to build shared libraries.
12496 [Niels Poppe <niels@netbox.org>]
12498 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
12501 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
12502 extension adding in x509 utility.
12505 *) Remove NOPROTO sections and error code comments.
12508 *) Partial rewrite of the DEF file generator to now parse the ANSI
12512 *) New Configure options --prefix=DIR and --openssldir=DIR.
12515 *) Complete rewrite of the error code script(s). It is all now handled
12516 by one script at the top level which handles error code gathering,
12517 header rewriting and C source file generation. It should be much better
12518 than the old method: it now uses a modified version of Ulf's parser to
12519 read the ANSI prototypes in all header files (thus the old K&R definitions
12520 aren't needed for error creation any more) and do a better job of
12521 translating function codes into names. The old 'ASN1 error code imbedded
12522 in a comment' is no longer necessary and it doesn't use .err files which
12523 have now been deleted. Also the error code call doesn't have to appear all
12524 on one line (which resulted in some large lines...).
12527 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
12530 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
12531 0 (which usually indicates a closed connection), but continue reading.
12534 *) Fix some race conditions.
12537 *) Add support for CRL distribution points extension. Add Certificate
12538 Policies and CRL distribution points documentation.
12541 *) Move the autogenerated header file parts to crypto/opensslconf.h.
12544 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
12545 8 of keying material. Merlin has also confirmed interop with this fix
12546 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
12547 [Merlin Hughes <merlin@baltimore.ie>]
12549 *) Fix lots of warnings.
12550 [Richard Levitte <levitte@stacken.kth.se>]
12552 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
12553 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
12554 [Richard Levitte <levitte@stacken.kth.se>]
12556 *) Fix problems with sizeof(long) == 8.
12557 [Andy Polyakov <appro@fy.chalmers.se>]
12559 *) Change functions to ANSI C.
12562 *) Fix typos in error codes.
12563 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
12565 *) Remove defunct assembler files from Configure.
12568 *) SPARC v8 assembler BIGNUM implementation.
12569 [Andy Polyakov <appro@fy.chalmers.se>]
12571 *) Support for Certificate Policies extension: both print and set.
12572 Various additions to support the r2i method this uses.
12575 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
12576 return a const string when you are expecting an allocated buffer.
12579 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
12580 types DirectoryString and DisplayText.
12583 *) Add code to allow r2i extensions to access the configuration database,
12584 add an LHASH database driver and add several ctx helper functions.
12587 *) Fix an evil bug in bn_expand2() which caused various BN functions to
12588 fail when they extended the size of a BIGNUM.
12591 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
12592 support typesafe stack.
12595 *) Fix typo in SSL_[gs]et_options().
12596 [Nils Frostberg <nils@medcom.se>]
12598 *) Delete various functions and files that belonged to the (now obsolete)
12599 old X509V3 handling code.
12602 *) New Configure option "rsaref".
12605 *) Don't auto-generate pem.h.
12608 *) Introduce type-safe ASN.1 SETs.
12611 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
12612 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
12614 *) Introduce type-safe STACKs. This will almost certainly break lots of code
12615 that links with OpenSSL (well at least cause lots of warnings), but fear
12616 not: the conversion is trivial, and it eliminates loads of evil casts. A
12617 few STACKed things have been converted already. Feel free to convert more.
12618 In the fullness of time, I'll do away with the STACK type altogether.
12621 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
12622 specified in <certfile> by updating the entry in the index.txt file.
12623 This way one no longer has to edit the index.txt file manually for
12624 revoking a certificate. The -revoke option does the gory details now.
12625 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
12627 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
12628 `-text' option at all and this way the `-noout -text' combination was
12629 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
12630 [Ralf S. Engelschall]
12632 *) Make sure a corresponding plain text error message exists for the
12633 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
12634 verify callback function determined that a certificate was revoked.
12635 [Ralf S. Engelschall]
12637 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
12638 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
12639 all available ciphers including rc5, which was forgotten until now.
12640 In order to let the testing shell script know which algorithms
12641 are available, a new (up to now undocumented) command
12642 "openssl list-cipher-commands" is used.
12645 *) Bugfix: s_client occasionally would sleep in select() when
12646 it should have checked SSL_pending() first.
12649 *) New functions DSA_do_sign and DSA_do_verify to provide access to
12650 the raw DSA values prior to ASN.1 encoding.
12653 *) Tweaks to Configure
12654 [Niels Poppe <niels@netbox.org>]
12656 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
12660 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
12663 *) New config option to avoid instructions that are illegal on the 80386.
12664 The default code is faster, but requires at least a 486.
12667 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
12668 SSL2_SERVER_VERSION (not used at all) macros, which are now the
12669 same as SSL2_VERSION anyway.
12672 *) New "-showcerts" option for s_client.
12675 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
12676 application. Various cleanups and fixes.
12679 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
12680 modify error routines to work internally. Add error codes and PBE init
12681 to library startup routines.
12684 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
12685 packing functions to asn1 and evp. Changed function names and error
12686 codes along the way.
12689 *) PKCS12 integration: and so it begins... First of several patches to
12690 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
12691 objects to objects.h
12694 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
12695 and display support for Thawte strong extranet extension.
12698 *) Add LinuxPPC support.
12699 [Jeff Dubrule <igor@pobox.org>]
12701 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
12702 bn_div_words in alpha.s.
12703 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
12705 *) Make sure the RSA OAEP test is skipped under -DRSAref because
12706 OAEP isn't supported when OpenSSL is built with RSAref.
12707 [Ulf Moeller <ulf@fitug.de>]
12709 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
12710 so they no longer are missing under -DNOPROTO.
12711 [Soren S. Jorvang <soren@t.dk>]
12714 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
12716 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
12717 doesn't work when the session is reused. Coming soon!
12720 *) Fix a security hole, that allows sessions to be reused in the wrong
12721 context thus bypassing client cert protection! All software that uses
12722 client certs and session caches in multiple contexts NEEDS PATCHING to
12723 allow session reuse! A fuller solution is in the works.
12724 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
12726 *) Some more source tree cleanups (removed obsolete files
12727 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
12728 permission on "config" script to be executable) and a fix for the INSTALL
12730 [Ulf Moeller <ulf@fitug.de>]
12732 *) Remove some legacy and erroneous uses of malloc, free instead of
12734 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
12736 *) Make rsa_oaep_test return non-zero on error.
12737 [Ulf Moeller <ulf@fitug.de>]
12739 *) Add support for native Solaris shared libraries. Configure
12740 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
12741 if someone would make that last step automatic.
12742 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
12744 *) ctx_size was not built with the right compiler during "make links". Fixed.
12747 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
12748 except NULL ciphers". This means the default cipher list will no longer
12749 enable NULL ciphers. They need to be specifically enabled e.g. with
12750 the string "DEFAULT:eNULL".
12753 *) Fix to RSA private encryption routines: if p < q then it would
12754 occasionally produce an invalid result. This will only happen with
12755 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
12758 *) Be less restrictive and allow also `perl util/perlpath.pl
12759 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
12760 because this way one can also use an interpreter named `perl5' (which is
12761 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
12762 installed as `perl').
12763 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
12765 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
12766 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
12768 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
12769 advapi32.lib to Win32 build and change the pem test comparison
12770 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
12771 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
12772 and crypto/des/ede_cbcm_enc.c.
12775 *) DES quad checksum was broken on big-endian architectures. Fixed.
12778 *) Comment out two functions in bio.h that aren't implemented. Fix up the
12779 Win32 test batch file so it (might) work again. The Win32 test batch file
12780 is horrible: I feel ill....
12783 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
12784 in e_os.h. Audit of header files to check ANSI and non ANSI
12785 sections: 10 functions were absent from non ANSI section and not exported
12786 from Windows DLLs. Fixed up libeay.num for new functions.
12789 *) Make `openssl version' output lines consistent.
12790 [Ralf S. Engelschall]
12792 *) Fix Win32 symbol export lists for BIO functions: Added
12793 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
12794 to ms/libeay{16,32}.def.
12795 [Ralf S. Engelschall]
12797 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
12798 fine under Unix and passes some trivial tests I've now added. But the
12799 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
12800 added to make sure no one expects that this stuff really works in the
12801 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
12802 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
12804 [Ralf S. Engelschall]
12806 *) Fix the generation of two part addresses in perl.
12807 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
12809 *) Add config entry for Linux on MIPS.
12810 [John Tobey <jtobey@channel1.com>]
12812 *) Make links whenever Configure is run, unless we are on Windoze.
12815 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
12816 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
12820 *) Add a useful kludge to allow package maintainers to specify compiler and
12821 other platforms details on the command line without having to patch the
12822 Configure script everytime: One now can use ``perl Configure
12823 <id>:<details>'', i.e. platform ids are allowed to have details appended
12824 to them (separated by colons). This is treated as there would be a static
12825 pre-configured entry in Configure's %table under key <id> with value
12826 <details> and ``perl Configure <id>'' is called. So, when you want to
12827 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
12828 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
12829 now, which overrides the FreeBSD-elf entry on-the-fly.
12830 [Ralf S. Engelschall]
12832 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
12835 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
12836 on the `perl Configure ...' command line. This way one can compile
12837 OpenSSL libraries with Position Independent Code (PIC) which is needed
12838 for linking it into DSOs.
12839 [Ralf S. Engelschall]
12841 *) Remarkably, export ciphers were totally broken and no-one had noticed!
12845 *) Cleaned up the LICENSE document: The official contact for any license
12846 questions now is the OpenSSL core team under openssl-core@openssl.org.
12847 And add a paragraph about the dual-license situation to make sure people
12848 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
12849 to the OpenSSL toolkit.
12850 [Ralf S. Engelschall]
12852 *) General source tree makefile cleanups: Made `making xxx in yyy...'
12853 display consistent in the source tree and replaced `/bin/rm' by `rm'.
12854 Additionally cleaned up the `make links' target: Remove unnecessary
12855 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
12856 to speed processing and no longer clutter the display with confusing
12857 stuff. Instead only the actually done links are displayed.
12858 [Ralf S. Engelschall]
12860 *) Permit null encryption ciphersuites, used for authentication only. It used
12861 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
12862 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
12866 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
12867 signed attributes when verifying signatures (this would break them),
12868 the detached data encoding was wrong and public keys obtained using
12869 X509_get_pubkey() weren't freed.
12872 *) Add text documentation for the BUFFER functions. Also added a work around
12873 to a Win95 console bug. This was triggered by the password read stuff: the
12874 last character typed gets carried over to the next fread(). If you were
12875 generating a new cert request using 'req' for example then the last
12876 character of the passphrase would be CR which would then enter the first
12880 *) Added the new `Includes OpenSSL Cryptography Software' button as
12881 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
12882 button and can be used by applications based on OpenSSL to show the
12883 relationship to the OpenSSL project.
12884 [Ralf S. Engelschall]
12886 *) Remove confusing variables in function signatures in files
12887 ssl/ssl_lib.c and ssl/ssl.h.
12888 [Lennart Bong <lob@kulthea.stacken.kth.se>]
12890 *) Don't install bss_file.c under PREFIX/include/
12891 [Lennart Bong <lob@kulthea.stacken.kth.se>]
12893 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
12894 functions that return function pointers and has support for NT specific
12895 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
12896 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
12897 unsigned to signed types: this was killing the Win32 compile.
12900 *) Add new certificate file to stack functions,
12901 SSL_add_dir_cert_subjects_to_stack() and
12902 SSL_add_file_cert_subjects_to_stack(). These largely supplant
12903 SSL_load_client_CA_file(), and can be used to add multiple certs easily
12904 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
12905 This means that Apache-SSL and similar packages don't have to mess around
12906 to add as many CAs as they want to the preferred list.
12909 *) Experiment with doxygen documentation. Currently only partially applied to
12911 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
12912 openssl.doxy as the configuration file.
12915 *) Get rid of remaining C++-style comments which strict C compilers hate.
12916 [Ralf S. Engelschall, pointed out by Carlos Amengual]
12918 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
12919 compiled in by default: it has problems with large keys.
12922 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
12923 DH private keys and/or callback functions which directly correspond to
12924 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
12925 is needed for applications which have to configure certificates on a
12926 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
12928 For the RSA certificate situation is makes no difference, but
12929 for the DSA certificate situation this fixes the "no shared cipher"
12930 problem where the OpenSSL cipher selection procedure failed because the
12931 temporary keys were not overtaken from the context and the API provided
12932 no way to reconfigure them.
12933 The new functions now let applications reconfigure the stuff and they
12934 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
12935 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
12936 non-public-API function ssl_cert_instantiate() is used as a helper
12937 function and also to reduce code redundancy inside ssl_rsa.c.
12938 [Ralf S. Engelschall]
12940 *) Move s_server -dcert and -dkey options out of the undocumented feature
12941 area because they are useful for the DSA situation and should be
12942 recognized by the users.
12943 [Ralf S. Engelschall]
12945 *) Fix the cipher decision scheme for export ciphers: the export bits are
12946 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
12947 SSL_EXP_MASK. So, the original variable has to be used instead of the
12948 already masked variable.
12949 [Richard Levitte <levitte@stacken.kth.se>]
12951 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
12952 [Richard Levitte <levitte@stacken.kth.se>]
12954 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
12955 from `int' to `unsigned int' because it's a length and initialized by
12956 EVP_DigestFinal() which expects an `unsigned int *'.
12957 [Richard Levitte <levitte@stacken.kth.se>]
12959 *) Don't hard-code path to Perl interpreter on shebang line of Configure
12960 script. Instead use the usual Shell->Perl transition trick.
12961 [Ralf S. Engelschall]
12963 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
12964 (in addition to RSA certificates) to match the behaviour of `openssl dsa
12965 -noout -modulus' as it's already the case for `openssl rsa -noout
12966 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
12967 currently the public key is printed (a decision which was already done by
12968 `openssl dsa -modulus' in the past) which serves a similar purpose.
12969 Additionally the NO_RSA no longer completely removes the whole -modulus
12970 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
12972 [Ralf S. Engelschall]
12974 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
12975 BIO. See the source (crypto/evp/bio_ok.c) for more info.
12976 [Arne Ansper <arne@ats.cyber.ee>]
12978 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
12979 to be added. Now both 'req' and 'ca' can use new objects defined in the
12983 *) Add cool BIO that does syslog (or event log on NT).
12984 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
12986 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
12987 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
12988 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
12989 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
12992 *) Add preliminary config info for new extension code.
12995 *) Make RSA_NO_PADDING really use no padding.
12996 [Ulf Moeller <ulf@fitug.de>]
12998 *) Generate errors when private/public key check is done.
13001 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
13002 for some CRL extensions and new objects added.
13005 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
13006 key usage extension and fuller support for authority key id.
13009 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
13010 padding method for RSA, which is recommended for new applications in PKCS
13011 #1 v2.0 (RFC 2437, October 1998).
13012 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
13013 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
13014 against Bleichbacher's attack on RSA.
13015 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
13018 *) Updates to the new SSL compression code
13019 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13021 *) Fix so that the version number in the master secret, when passed
13022 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
13023 (because the server will not accept higher), that the version number
13024 is 0x03,0x01, not 0x03,0x00
13025 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13027 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
13028 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
13029 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
13032 *) Support for RAW extensions where an arbitrary extension can be
13033 created by including its DER encoding. See apps/openssl.cnf for
13037 *) Make sure latest Perl versions don't interpret some generated C array
13038 code as Perl array code in the crypto/err/err_genc.pl script.
13039 [Lars Weber <3weber@informatik.uni-hamburg.de>]
13041 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
13042 not many people have the assembler. Various Win32 compilation fixes and
13043 update to the INSTALL.W32 file with (hopefully) more accurate Win32
13044 build instructions.
13047 *) Modify configure script 'Configure' to automatically create crypto/date.h
13048 file under Win32 and also build pem.h from pem.org. New script
13049 util/mkfiles.pl to create the MINFO file on environments that can't do a
13050 'make files': perl util/mkfiles.pl >MINFO should work.
13053 *) Major rework of DES function declarations, in the pursuit of correctness
13054 and purity. As a result, many evil casts evaporated, and some weirdness,
13055 too. You may find this causes warnings in your code. Zapping your evil
13056 casts will probably fix them. Mostly.
13059 *) Fix for a typo in asn1.h. Bug fix to object creation script
13060 obj_dat.pl. It considered a zero in an object definition to mean
13061 "end of object": none of the objects in objects.h have any zeros
13062 so it wasn't spotted.
13063 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
13065 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
13066 Masking (CBCM). In the absence of test vectors, the best I have been able
13067 to do is check that the decrypt undoes the encrypt, so far. Send me test
13068 vectors if you have them.
13071 *) Correct calculation of key length for export ciphers (too much space was
13072 allocated for null ciphers). This has not been tested!
13075 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
13076 message is now correct (it understands "crypto" and "ssl" on its
13077 command line). There is also now an "update" option. This will update
13078 the util/ssleay.num and util/libeay.num files with any new functions.
13080 perl util/mkdef.pl crypto ssl update
13081 it will update them.
13084 *) Overhauled the Perl interface (perl/*):
13085 - ported BN stuff to OpenSSL's different BN library
13086 - made the perl/ source tree CVS-aware
13087 - renamed the package from SSLeay to OpenSSL (the files still contain
13088 their history because I've copied them in the repository)
13089 - removed obsolete files (the test scripts will be replaced
13090 by better Test::Harness variants in the future)
13091 [Ralf S. Engelschall]
13093 *) First cut for a very conservative source tree cleanup:
13094 1. merge various obsolete readme texts into doc/ssleay.txt
13095 where we collect the old documents and readme texts.
13096 2. remove the first part of files where I'm already sure that we no
13097 longer need them because of three reasons: either they are just temporary
13098 files which were left by Eric or they are preserved original files where
13099 I've verified that the diff is also available in the CVS via "cvs diff
13100 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
13101 the crypto/md/ stuff).
13102 [Ralf S. Engelschall]
13104 *) More extension code. Incomplete support for subject and issuer alt
13105 name, issuer and authority key id. Change the i2v function parameters
13106 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
13107 what that's for :-) Fix to ASN1 macro which messed up
13108 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
13111 *) Preliminary support for ENUMERATED type. This is largely copied from the
13115 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
13116 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13118 *) Make sure `make rehash' target really finds the `openssl' program.
13119 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
13121 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
13122 like to hear about it if this slows down other processors.
13125 *) Add CygWin32 platform information to Configure script.
13126 [Alan Batie <batie@aahz.jf.intel.com>]
13128 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
13129 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
13131 *) New program nseq to manipulate netscape certificate sequences
13134 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
13138 *) Fixes to BN code. Previously the default was to define BN_RECURSION
13139 but the BN code had some problems that would cause failures when
13140 doing certificate verification and some other functions.
13141 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13143 *) Add ASN1 and PEM code to support netscape certificate sequences.
13146 *) Add ASN1 and PEM code to support netscape certificate sequences.
13149 *) Add several PKIX and private extended key usage OIDs.
13152 *) Modify the 'ca' program to handle the new extension code. Modify
13153 openssl.cnf for new extension format, add comments.
13156 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
13157 and add a sample to openssl.cnf so req -x509 now adds appropriate
13161 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
13162 error code, add initial support to X509_print() and x509 application.
13165 *) Takes a deep breath and start adding X509 V3 extension support code. Add
13166 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
13167 stuff is currently isolated and isn't even compiled yet.
13170 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
13171 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
13172 Removed the versions check from X509 routines when loading extensions:
13173 this allows certain broken certificates that don't set the version
13174 properly to be processed.
13177 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
13178 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
13179 can still be regenerated with "make depend".
13182 *) Spelling mistake in C version of CAST-128.
13183 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
13185 *) Changes to the error generation code. The perl script err-code.pl
13186 now reads in the old error codes and retains the old numbers, only
13187 adding new ones if necessary. It also only changes the .err files if new
13188 codes are added. The makefiles have been modified to only insert errors
13189 when needed (to avoid needlessly modifying header files). This is done
13190 by only inserting errors if the .err file is newer than the auto generated
13191 C file. To rebuild all the error codes from scratch (the old behaviour)
13192 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
13193 or delete all the .err files.
13196 *) CAST-128 was incorrectly implemented for short keys. The C version has
13197 been fixed, but is untested. The assembler versions are also fixed, but
13198 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
13199 to regenerate it if needed.
13200 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
13201 Hagino <itojun@kame.net>]
13203 *) File was opened incorrectly in randfile.c.
13204 [Ulf Möller <ulf@fitug.de>]
13206 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
13207 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
13208 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
13209 al: it's just almost always a UTCTime. Note this patch adds new error
13210 codes so do a "make errors" if there are problems.
13213 *) Correct Linux 1 recognition in config.
13214 [Ulf Möller <ulf@fitug.de>]
13216 *) Remove pointless MD5 hash when using DSA keys in ca.
13217 [Anonymous <nobody@replay.com>]
13219 *) Generate an error if given an empty string as a cert directory. Also
13220 generate an error if handed NULL (previously returned 0 to indicate an
13221 error, but didn't set one).
13222 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
13224 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
13227 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
13228 parameters. This was causing a warning which killed off the Win32 compile.
13231 *) Remove C++ style comments from crypto/bn/bn_local.h.
13232 [Neil Costigan <neil.costigan@celocom.com>]
13234 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
13235 based on a text string, looking up short and long names and finally
13236 "dot" format. The "dot" format stuff didn't work. Added new function
13237 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
13238 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
13239 OID is not part of the table.
13242 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
13243 X509_LOOKUP_by_alias().
13246 *) Sort openssl functions by name.
13249 *) Get the gendsa program working (hopefully) and add it to app list. Remove
13250 encryption from sample DSA keys (in case anyone is interested the password
13254 *) Make _all_ *_free functions accept a NULL pointer.
13255 [Frans Heymans <fheymans@isaserver.be>]
13257 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
13259 [Anonymous <nobody@replay.com>]
13261 *) s_server should send the CAfile as acceptable CAs, not its own cert.
13262 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
13264 *) Don't blow it for numeric -newkey arguments to apps/req.
13265 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
13267 *) Temp key "for export" tests were wrong in s3_srvr.c.
13268 [Anonymous <nobody@replay.com>]
13270 *) Add prototype for temp key callback functions
13271 SSL_CTX_set_tmp_{rsa,dh}_callback().
13274 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
13275 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
13278 *) X509_name_add_entry() freed the wrong thing after an error.
13279 [Arne Ansper <arne@ats.cyber.ee>]
13281 *) rsa_eay.c would attempt to free a NULL context.
13282 [Arne Ansper <arne@ats.cyber.ee>]
13284 *) BIO_s_socket() had a broken should_retry() on Windoze.
13285 [Arne Ansper <arne@ats.cyber.ee>]
13287 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
13288 [Arne Ansper <arne@ats.cyber.ee>]
13290 *) Make sure the already existing X509_STORE->depth variable is initialized
13291 in X509_STORE_new(), but document the fact that this variable is still
13292 unused in the certificate verification process.
13293 [Ralf S. Engelschall]
13295 *) Fix the various library and apps files to free up pkeys obtained from
13296 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
13299 *) Fix reference counting in X509_PUBKEY_get(). This makes
13300 demos/maurice/example2.c work, amongst others, probably.
13301 [Steve Henson and Ben Laurie]
13303 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
13304 `openssl' and second, the shortcut symlinks for the `openssl <command>'
13305 are no longer created. This way we have a single and consistent command
13306 line interface `openssl <command>', similar to `cvs <command>'.
13307 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
13309 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
13310 BIT STRING wrapper always have zero unused bits.
13313 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
13316 *) Make the top-level INSTALL documentation easier to understand.
13319 *) Makefiles updated to exit if an error occurs in a sub-directory
13320 make (including if user presses ^C) [Paul Sutton]
13322 *) Make Montgomery context stuff explicit in RSA data structure.
13325 *) Fix build order of pem and err to allow for generated pem.h.
13328 *) Fix renumbering bug in X509_NAME_delete_entry().
13331 *) Enhanced the err-ins.pl script so it makes the error library number
13332 global and can add a library name. This is needed for external ASN1 and
13333 other error libraries.
13336 *) Fixed sk_insert which never worked properly.
13339 *) Fix ASN1 macros so they can handle indefinite length constructed
13340 EXPLICIT tags. Some non standard certificates use these: they can now
13344 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
13345 into a single doc/ssleay.txt bundle. This way the information is still
13346 preserved but no longer messes up this directory. Now it's new room for
13347 the new set of documentation files.
13348 [Ralf S. Engelschall]
13350 *) SETs were incorrectly DER encoded. This was a major pain, because they
13351 shared code with SEQUENCEs, which aren't coded the same. This means that
13352 almost everything to do with SETs or SEQUENCEs has either changed name or
13353 number of arguments.
13354 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
13356 *) Fix test data to work with the above.
13359 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
13360 was already fixed by Eric for 0.9.1 it seems.
13361 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
13363 *) Autodetect FreeBSD3.
13366 *) Fix various bugs in Configure. This affects the following platforms:
13370 unixware-2.0-pentium
13374 *) Eliminate generated files from CVS. Reorder tests to regenerate files
13375 before they are needed.
13378 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
13382 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
13384 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
13385 changed SSLeay to OpenSSL in version strings.
13386 [Ralf S. Engelschall]
13388 *) Some fixups to the top-level documents.
13391 *) Fixed the nasty bug where rsaref.h was not found under compile-time
13392 because the symlink to include/ was missing.
13393 [Ralf S. Engelschall]
13395 *) Incorporated the popular no-RSA/DSA-only patches
13396 which allow to compile a RSA-free SSLeay.
13397 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
13399 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
13400 when "ssleay" is still not found.
13401 [Ralf S. Engelschall]
13403 *) Added more platforms to Configure: Cray T3E, HPUX 11,
13404 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
13406 *) Updated the README file.
13407 [Ralf S. Engelschall]
13409 *) Added various .cvsignore files in the CVS repository subdirs
13410 to make a "cvs update" really silent.
13411 [Ralf S. Engelschall]
13413 *) Recompiled the error-definition header files and added
13414 missing symbols to the Win32 linker tables.
13415 [Ralf S. Engelschall]
13417 *) Cleaned up the top-level documents;
13418 o new files: CHANGES and LICENSE
13419 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
13420 o merged COPYRIGHT into LICENSE
13421 o removed obsolete TODO file
13422 o renamed MICROSOFT to INSTALL.W32
13423 [Ralf S. Engelschall]
13425 *) Removed dummy files from the 0.9.1b source tree:
13426 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
13427 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
13428 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
13429 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
13430 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
13431 [Ralf S. Engelschall]
13433 *) Added various platform portability fixes.
13436 *) The Genesis of the OpenSSL rpject:
13437 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
13438 Young and Tim J. Hudson created while they were working for C2Net until
13440 [The OpenSSL Project]
13443 Changes between 0.9.0b and 0.9.1b [not released]
13445 *) Updated a few CA certificates under certs/
13448 *) Changed some BIGNUM api stuff.
13451 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
13452 DGUX x86, Linux Alpha, etc.
13455 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
13456 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
13460 *) Add -strparse option to asn1pars program which parses nested
13462 [Dr Stephen Henson <shenson@bigfoot.com>]
13464 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
13467 *) DSA fix for "ca" program.
13470 *) Added "-genkey" option to "dsaparam" program.
13473 *) Added RIPE MD160 (rmd160) message digest.
13476 *) Added -a (all) option to "ssleay version" command.
13479 *) Added PLATFORM define which is the id given to Configure.
13482 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
13485 *) Extended the ASN.1 parser routines.
13488 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
13491 *) Added a BN_CTX to the BN library.
13494 *) Fixed the weak key values in DES library
13497 *) Changed API in EVP library for cipher aliases.
13500 *) Added support for RC2/64bit cipher.
13503 *) Converted the lhash library to the crypto/mem.c functions.
13506 *) Added more recognized ASN.1 object ids.
13509 *) Added more RSA padding checks for SSL/TLS.
13512 *) Added BIO proxy/filter functionality.
13515 *) Added extra_certs to SSL_CTX which can be used
13516 send extra CA certificates to the client in the CA cert chain sending
13517 process. It can be configured with SSL_CTX_add_extra_chain_cert().
13520 *) Now Fortezza is denied in the authentication phase because
13521 this is key exchange mechanism is not supported by SSLeay at all.
13524 *) Additional PKCS1 checks.
13527 *) Support the string "TLSv1" for all TLS v1 ciphers.
13530 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
13531 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
13534 *) Fixed a few memory leaks.
13537 *) Fixed various code and comment typos.
13540 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
13541 bytes sent in the client random.
13542 [Edward Bishop <ebishop@spyglass.com>]
projects / openssl.git / blob