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 *) Fixed an an overflow bug in the x64_64 Montgomery squaring procedure
13 used in exponentiation with 512-bit moduli. No EC algorithms are
14 affected. Analysis suggests that attacks against 2-prime RSA1024,
15 3-prime RSA1536, and DSA1024 as a result of this defect would be very
16 difficult to perform and are not believed likely. Attacks against DH512
17 are considered just feasible. However, for an attack the target would
18 have to re-use the DH512 private key, which is not recommended anyway.
19 Also applications directly using the low level API BN_mod_exp may be
20 affected if they use BN_FLG_CONSTTIME.
24 *) Introduced a new method type and API, OSSL_SERIALIZER, to
25 represent generic serializers. An implementation is expected to
26 be able to serialize an object associated with a given name (such
27 as an algorithm name for an asymmetric key) into forms given by
28 implementation properties.
30 Serializers are primarily used from inside libcrypto, through
31 calls to functions like EVP_PKEY_print_private(),
32 PEM_write_bio_PrivateKey() and similar.
34 Serializers are specified in such a way that they can be made to
35 directly handle the provider side portion of an object, if this
36 provider side part comes from the same provider as the serializer
37 itself, but can also be made to handle objects in parametrized
38 form (as an OSSL_PARAM array of data). This allows a provider to
39 offer generic serializers as a service for any other provider.
42 *) Added a .pragma directive to the syntax of configuration files, to
43 allow varying behavior in a supported and predictable manner.
44 Currently added pragma:
48 This allows dollar signs to be a keyword character unless it's
49 followed by a opening brace or parenthesis. This is useful for
50 platforms where dollar signs are commonly used in names, such as
51 volume names and system directory names on VMS.
54 *) Added functionality to create an EVP_PKEY from user data. This
55 is effectively the same as creating a RSA, DH or DSA object and
56 then assigning them to an EVP_PKEY, but directly using algorithm
57 agnostic EVP functions. A benefit is that this should be future
58 proof for public key algorithms to come.
61 *) Change the interpretation of the '--api' configuration option to
62 mean that this is a desired API compatibility level with no
63 further meaning. The previous interpretation, that this would
64 also mean to remove all deprecated symbols up to and including
65 the given version, no requires that 'no-deprecated' is also used
68 When building applications, the desired API compatibility level
69 can be set with the OPENSSL_API_COMPAT macro like before. For
70 API compatibility version below 3.0, the old style numerical
71 value is valid as before, such as -DOPENSSL_API_COMPAT=0x10100000L.
72 For version 3.0 and on, the value is expected to be the decimal
73 value calculated from the major and minor version like this:
75 MAJOR * 10000 + MINOR * 100
79 -DOPENSSL_API_COMPAT=30000 For 3.0
80 -DOPENSSL_API_COMPAT=30200 For 3.2
82 To hide declarations that are deprecated up to and including the
83 given API compatibility level, -DOPENSSL_NO_DEPRECATED must be
84 given when building the application as well.
87 *) Added the X509_LOOKUP_METHOD called X509_LOOKUP_store, to allow
88 access to certificate and CRL stores via URIs and OSSL_STORE
91 This adds the following functions:
94 X509_STORE_load_file()
95 X509_STORE_load_path()
96 X509_STORE_load_store()
97 SSL_add_store_cert_subjects_to_stack()
98 SSL_CTX_set_default_verify_store()
99 SSL_CTX_load_verify_file()
100 SSL_CTX_load_verify_dir()
101 SSL_CTX_load_verify_store()
103 Also, the following functions are now deprecated:
105 - X509_STORE_load_locations() (use X509_STORE_load_file(),
106 X509_STORE_load_path() or X509_STORE_load_store() instead)
107 - SSL_CTX_load_verify_locations() (use SSL_CTX_load_verify_file(),
108 SSL_CTX_load_verify_dir() or SSL_CTX_load_verify_store() instead)
111 *) Added a new method to gather entropy on VMS, based on SYS$GET_ENTROPY.
112 The presence of this system service is determined at run-time.
115 *) Added functionality to create an EVP_PKEY context based on data
116 for methods from providers. This takes an algorithm name and a
117 property query string and simply stores them, with the intent
118 that any operation that uses this context will use those strings
119 to fetch the needed methods implicitly, thereby making the port
120 of application written for pre-3.0 OpenSSL easier.
123 *) The undocumented function NCONF_WIN32() has been deprecated; for
124 conversion details see the HISTORY section of doc/man5/config.pod
127 *) Introduced the new functions EVP_DigestSignInit_ex() and
128 EVP_DigestVerifyInit_ex(). The macros EVP_DigestSignUpdate() and
129 EVP_DigestVerifyUpdate() have been converted to functions. See the man
130 pages for further details.
133 *) Over two thousand fixes were made to the documentation, including:
134 adding missing command flags, better style conformance, documentation
136 [Rich Salz, Richard Levitte]
138 *) s390x assembly pack: add hardware-support for P-256, P-384, P-521,
139 X25519, X448, Ed25519 and Ed448.
142 *) Print all values for a PKCS#12 attribute with 'openssl pkcs12', not just
146 *) Deprecated the public definition of ERR_STATE as well as the function
147 ERR_get_state(). This is done in preparation of making ERR_STATE an
151 *) Added ERR functionality to give callers access to the stored function
152 names that have replaced the older function code based functions.
154 New functions are ERR_get_error_func(), ERR_peek_error_func(),
155 ERR_peek_last_error_func(), ERR_get_error_data(), ERR_peek_error_data(),
156 ERR_peek_last_error_data(), ERR_get_error_all(), ERR_peek_error_all()
157 and ERR_peek_last_error_all().
159 These functions have become deprecated: ERR_get_error_line_data(),
160 ERR_peek_error_line_data(), ERR_peek_last_error_line_data() and
161 ERR_func_error_string().
164 *) Extended testing to be verbose for failing tests only. The make variables
165 VERBOSE_FAILURE or VF can be used to enable this:
167 $ make VF=1 test # Unix
168 $ mms /macro=(VF=1) test ! OpenVMS
169 $ nmake VF=1 test # Windows
173 *) For built-in EC curves, ensure an EC_GROUP built from the curve name is
174 used even when parsing explicit parameters, when loading a serialized key
175 or calling `EC_GROUP_new_from_ecpkparameters()`/
176 `EC_GROUP_new_from_ecparameters()`.
177 This prevents bypass of security hardening and performance gains,
178 especially for curves with specialized EC_METHODs.
179 By default, if a key encoded with explicit parameters is loaded and later
180 serialized, the output is still encoded with explicit parameters, even if
181 internally a "named" EC_GROUP is used for computation.
184 *) Compute ECC cofactors if not provided during EC_GROUP construction. Before
185 this change, EC_GROUP_set_generator would accept order and/or cofactor as
186 NULL. After this change, only the cofactor parameter can be NULL. It also
187 does some minimal sanity checks on the passed order.
191 *) Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey.
192 An attack is simple, if the first CMS_recipientInfo is valid but the
193 second CMS_recipientInfo is chosen ciphertext. If the second
194 recipientInfo decodes to PKCS #1 v1.5 form plaintext, the correct
195 encryption key will be replaced by garbage, and the message cannot be
196 decoded, but if the RSA decryption fails, the correct encryption key is
197 used and the recipient will not notice the attack.
198 As a work around for this potential attack the length of the decrypted
199 key must be equal to the cipher default key length, in case the
200 certifiate is not given and all recipientInfo are tried out.
201 The old behaviour can be re-enabled in the CMS code by setting the
202 CMS_DEBUG_DECRYPT flag.
205 *) Early start up entropy quality from the DEVRANDOM seed source has been
206 improved for older Linux systems. The RAND subsystem will wait for
207 /dev/random to be producing output before seeding from /dev/urandom.
208 The seeded state is stored for future library initialisations using
209 a system global shared memory segment. The shared memory identifier
210 can be configured by defining OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID to
211 the desired value. The default identifier is 114.
214 *) Revised BN_generate_prime_ex to not avoid factors 2..17863 in p-1
215 when primes for RSA keys are computed.
216 Since we previously always generated primes == 2 (mod 3) for RSA keys,
217 the 2-prime and 3-prime RSA modules were easy to distinguish, since
218 N = p*q = 1 (mod 3), but N = p*q*r = 2 (mod 3). Therefore fingerprinting
219 2-prime vs. 3-prime RSA keys was possible by computing N mod 3.
220 This avoids possible fingerprinting of newly generated RSA modules.
223 *) Correct the extended master secret constant on EBCDIC systems. Without this
224 fix TLS connections between an EBCDIC system and a non-EBCDIC system that
225 negotiate EMS will fail. Unfortunately this also means that TLS connections
226 between EBCDIC systems with this fix, and EBCDIC systems without this
227 fix will fail if they negotiate EMS.
230 *) Changed the library initialisation so that the config file is now loaded
231 by default. This was already the case for libssl. It now occurs for both
232 libcrypto and libssl. Use the OPENSSL_INIT_NO_LOAD_CONFIG option to
233 OPENSSL_init_crypto() to suppress automatic loading of a config file.
236 *) Introduced new error raising macros, ERR_raise() and ERR_raise_data(),
237 where the former acts as a replacement for ERR_put_error(), and the
238 latter replaces the combination ERR_put_error()+ERR_add_error_data().
239 ERR_raise_data() adds more flexibility by taking a format string and
240 an arbitrary number of arguments following it, to be processed with
244 *) Introduced a new function, OSSL_PROVIDER_available(), which can be used
245 to check if a named provider is loaded and available. When called, it
246 will also activate all fallback providers if such are still present.
249 *) Enforce a minimum DH modulus size of 512 bits.
252 *) Changed DH parameters to generate the order q subgroup instead of 2q.
253 Previously generated DH parameters are still accepted by DH_check
254 but DH_generate_key works around that by clearing bit 0 of the
255 private key for those. This avoids leaking bit 0 of the private key.
258 *) Significantly reduce secure memory usage by the randomness pools.
261 *) {CRYPTO,OPENSSL}_mem_debug_{push,pop} are now no-ops and have been
265 *) A new type, EVP_KEYEXCH, has been introduced to represent key exchange
266 algorithms. An implementation of a key exchange algorithm can be obtained
267 by using the function EVP_KEYEXCH_fetch(). An EVP_KEYEXCH algorithm can be
268 used in a call to EVP_PKEY_derive_init_ex() which works in a similar way to
269 the older EVP_PKEY_derive_init() function. See the man pages for the new
270 functions for further details.
273 *) The EVP_PKEY_CTX_set_dh_pad() macro has now been converted to a function.
276 *) Removed the function names from error messages and deprecated the
279 *) Removed NextStep support and the macro OPENSSL_UNISTD
282 *) Removed DES_check_key. Also removed OPENSSL_IMPLEMENT_GLOBAL,
283 OPENSSL_GLOBAL_REF, OPENSSL_DECLARE_GLOBAL.
284 Also removed "export var as function" capability; we do not export
285 variables, only functions.
288 *) RC5_32_set_key has been changed to return an int type, with 0 indicating
289 an error and 1 indicating success. In previous versions of OpenSSL this
290 was a void type. If a key was set longer than the maximum possible this
294 *) Support SM2 signing and verification schemes with X509 certificate.
297 *) Use SHA256 as the default digest for TS query in the ts app.
300 *) Change PBKDF2 to conform to SP800-132 instead of the older PKCS5 RFC2898.
301 This checks that the salt length is at least 128 bits, the derived key
302 length is at least 112 bits, and that the iteration count is at least 1000.
303 For backwards compatibility these checks are disabled by default in the
304 default provider, but are enabled by default in the fips provider.
305 To enable or disable these checks use the control
306 EVP_KDF_CTRL_SET_PBKDF2_PKCS5_MODE.
309 *) Default cipher lists/suites are now available via a function, the
310 #defines are deprecated.
313 *) Add target VC-WIN32-UWP, VC-WIN64A-UWP, VC-WIN32-ARM-UWP and
314 VC-WIN64-ARM-UWP in Windows OneCore target for making building libraries
315 for Windows Store apps easier. Also, the "no-uplink" option has been added.
318 *) Join the directories crypto/x509 and crypto/x509v3
321 *) Change the default RSA, DSA and DH size to 2048 bit instead of 1024.
322 This changes the size when using the genpkey app when no size is given. It
323 fixes an omission in earlier changes that changed all RSA, DSA and DH
324 generation apps to use 2048 bits by default.
327 *) Added command 'openssl kdf' that uses the EVP_KDF API.
330 *) Added command 'openssl mac' that uses the EVP_MAC API.
333 *) Added OPENSSL_info() to get diverse built-in OpenSSL data, such
334 as default directories. Also added the command 'openssl info'
335 for scripting purposes.
338 *) The functions AES_ige_encrypt() and AES_bi_ige_encrypt() have been
339 deprecated. These undocumented functions were never integrated into the EVP
340 layer and implement the AES Infinite Garble Extension (IGE) mode and AES
341 Bi-directional IGE mode. These modes were never formally standardised and
342 usage of these functions is believed to be very small. In particular
343 AES_bi_ige_encrypt() has a known bug. It accepts 2 AES keys, but only one
344 is ever used. The security implications are believed to be minimal, but
345 this issue was never fixed for backwards compatibility reasons. New code
346 should not use these modes.
349 *) Add prediction resistance to the DRBG reseeding process.
352 *) Limit the number of blocks in a data unit for AES-XTS to 2^20 as
353 mandated by IEEE Std 1619-2018.
356 *) Added newline escaping functionality to a filename when using openssl dgst.
357 This output format is to replicate the output format found in the '*sum'
358 checksum programs. This aims to preserve backward compatibility.
359 [Matt Eaton, Richard Levitte, and Paul Dale]
361 *) Removed the heartbeat message in DTLS feature, as it has very
362 little usage and doesn't seem to fulfill a valuable purpose.
363 The configuration option is now deprecated.
366 *) Changed the output of 'openssl {digestname} < file' to display the
367 digest name in its output.
370 *) Added a new generic trace API which provides support for enabling
371 instrumentation through trace output. This feature is mainly intended
372 as an aid for developers and is disabled by default. To utilize it,
373 OpenSSL needs to be configured with the `enable-trace` option.
375 If the tracing API is enabled, the application can activate trace output
376 by registering BIOs as trace channels for a number of tracing and debugging
379 The 'openssl' application has been expanded to enable any of the types
380 available via environment variables defined by the user, and serves as
381 one possible example on how to use this functionality.
382 [Richard Levitte & Matthias St. Pierre]
384 *) Added build tests for C++. These are generated files that only do one
385 thing, to include one public OpenSSL head file each. This tests that
386 the public header files can be usefully included in a C++ application.
388 This test isn't enabled by default. It can be enabled with the option
389 'enable-buildtest-c++'.
392 *) Add Single Step KDF (EVP_KDF_SS) to EVP_KDF.
395 *) Add KMAC to EVP_MAC.
398 *) Added property based algorithm implementation selection framework to
402 *) Added SCA hardening for modular field inversion in EC_GROUP through
403 a new dedicated field_inv() pointer in EC_METHOD.
404 This also addresses a leakage affecting conversions from projective
405 to affine coordinates.
406 [Billy Bob Brumley, Nicola Tuveri]
408 *) Added EVP_KDF, an EVP layer KDF API, to simplify adding KDF and PRF
409 implementations. This includes an EVP_PKEY to EVP_KDF bridge for
410 those algorithms that were already supported through the EVP_PKEY API
411 (scrypt, TLS1 PRF and HKDF). The low-level KDF functions for PBKDF2
412 and scrypt are now wrappers that call EVP_KDF.
415 *) Build devcrypto engine as a dynamic engine.
418 *) Add keyed BLAKE2 to EVP_MAC.
421 *) Fix a bug in the computation of the endpoint-pair shared secret used
422 by DTLS over SCTP. This breaks interoperability with older versions
423 of OpenSSL like OpenSSL 1.1.0 and OpenSSL 1.0.2. There is a runtime
424 switch SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG (off by default) enabling
425 interoperability with such broken implementations. However, enabling
426 this switch breaks interoperability with correct implementations.
428 *) Fix a use after free bug in d2i_X509_PUBKEY when overwriting a
429 re-used X509_PUBKEY object if the second PUBKEY is malformed.
432 *) Move strictness check from EVP_PKEY_asn1_new() to EVP_PKEY_asn1_add0().
435 *) Change the license to the Apache License v2.0.
438 *) Switch to a new version scheme using three numbers MAJOR.MINOR.PATCH.
440 o Major releases (indicated by incrementing the MAJOR release number)
441 may introduce incompatible API/ABI changes.
442 o Minor releases (indicated by incrementing the MINOR release number)
443 may introduce new features but retain API/ABI compatibility.
444 o Patch releases (indicated by incrementing the PATCH number)
445 are intended for bug fixes and other improvements of existing
446 features only (like improving performance or adding documentation)
447 and retain API/ABI compatibility.
450 *) Add support for RFC5297 SIV mode (siv128), including AES-SIV.
453 *) Remove the 'dist' target and add a tarball building script. The
454 'dist' target has fallen out of use, and it shouldn't be
455 necessary to configure just to create a source distribution.
458 *) Recreate the OS390-Unix config target. It no longer relies on a
459 special script like it did for OpenSSL pre-1.1.0.
462 *) Instead of having the source directories listed in Configure, add
463 a 'build.info' keyword SUBDIRS to indicate what sub-directories to
467 *) Add GMAC to EVP_MAC.
470 *) Ported the HMAC, CMAC and SipHash EVP_PKEY_METHODs to EVP_MAC.
473 *) Added EVP_MAC, an EVP layer MAC API, to simplify adding MAC
474 implementations. This includes a generic EVP_PKEY to EVP_MAC bridge,
475 to facilitate the continued use of MACs through raw private keys in
476 functionality such as EVP_DigestSign* and EVP_DigestVerify*.
479 *) Deprecate ECDH_KDF_X9_62() and mark its replacement as internal. Users
480 should use the EVP interface instead (EVP_PKEY_CTX_set_ecdh_kdf_type).
483 *) Added EVP_PKEY_ECDH_KDF_X9_63 and ecdh_KDF_X9_63() as replacements for
484 the EVP_PKEY_ECDH_KDF_X9_62 KDF type and ECDH_KDF_X9_62(). The old names
485 are retained for backwards compatibility.
488 *) AES-XTS mode now enforces that its two keys are different to mitigate
489 the attacked described in "Efficient Instantiations of Tweakable
490 Blockciphers and Refinements to Modes OCB and PMAC" by Phillip Rogaway.
491 Details of this attack can be obtained from:
492 http://web.cs.ucdavis.edu/%7Erogaway/papers/offsets.pdf
495 *) Rename the object files, i.e. give them other names than in previous
496 versions. Their names now include the name of the final product, as
497 well as its type mnemonic (bin, lib, shlib).
500 *) Added new option for 'openssl list', '-objects', which will display the
501 list of built in objects, i.e. OIDs with names.
504 *) Added support for Linux Kernel TLS data-path. The Linux Kernel data-path
505 improves application performance by removing data copies and providing
506 applications with zero-copy system calls such as sendfile and splice.
509 Changes between 1.1.1a and 1.1.1b [xx XXX xxxx]
511 *) Change the info callback signals for the start and end of a post-handshake
512 message exchange in TLSv1.3. In 1.1.1/1.1.1a we used SSL_CB_HANDSHAKE_START
513 and SSL_CB_HANDSHAKE_DONE. Experience has shown that many applications get
514 confused by this and assume that a TLSv1.2 renegotiation has started. This
515 can break KeyUpdate handling. Instead we no longer signal the start and end
516 of a post handshake message exchange (although the messages themselves are
517 still signalled). This could break some applications that were expecting
518 the old signals. However without this KeyUpdate is not usable for many
522 Changes between 1.1.1 and 1.1.1a [20 Nov 2018]
524 *) Timing vulnerability in DSA signature generation
526 The OpenSSL DSA signature algorithm has been shown to be vulnerable to a
527 timing side channel attack. An attacker could use variations in the signing
528 algorithm to recover the private key.
530 This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser.
534 *) Timing vulnerability in ECDSA signature generation
536 The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a
537 timing side channel attack. An attacker could use variations in the signing
538 algorithm to recover the private key.
540 This issue was reported to OpenSSL on 25th October 2018 by Samuel Weiser.
544 *) Fixed the issue that RAND_add()/RAND_seed() silently discards random input
545 if its length exceeds 4096 bytes. The limit has been raised to a buffer size
546 of two gigabytes and the error handling improved.
548 This issue was reported to OpenSSL by Dr. Falko Strenzke. It has been
549 categorized as a normal bug, not a security issue, because the DRBG reseeds
550 automatically and is fully functional even without additional randomness
551 provided by the application.
553 Changes between 1.1.0i and 1.1.1 [11 Sep 2018]
555 *) Add a new ClientHello callback. Provides a callback interface that gives
556 the application the ability to adjust the nascent SSL object at the
557 earliest stage of ClientHello processing, immediately after extensions have
558 been collected but before they have been processed. In particular, this
559 callback can adjust the supported TLS versions in response to the contents
563 *) Add SM2 base algorithm support.
566 *) s390x assembly pack: add (improved) hardware-support for the following
567 cryptographic primitives: sha3, shake, aes-gcm, aes-ccm, aes-ctr, aes-ofb,
568 aes-cfb/cfb8, aes-ecb.
571 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
572 parameter is no longer accepted, as it leads to a corrupt table. NULL
573 pem_str is reserved for alias entries only.
576 *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
577 step for prime curves. The new implementation is based on formulae from
578 differential addition-and-doubling in homogeneous projective coordinates
579 from Izu-Takagi "A fast parallel elliptic curve multiplication resistant
580 against side channel attacks" and Brier-Joye "Weierstrass Elliptic Curves
581 and Side-Channel Attacks" Eq. (8) for y-coordinate recovery, modified
582 to work in projective coordinates.
583 [Billy Bob Brumley, Nicola Tuveri]
585 *) Change generating and checking of primes so that the error rate of not
586 being prime depends on the intended use based on the size of the input.
587 For larger primes this will result in more rounds of Miller-Rabin.
588 The maximal error rate for primes with more than 1080 bits is lowered
590 [Kurt Roeckx, Annie Yousar]
592 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64.
595 *) The 'tsget' script is renamed to 'tsget.pl', to avoid confusion when
596 moving between systems, and to avoid confusion when a Windows build is
597 done with mingw vs with MSVC. For POSIX installs, there's still a
598 symlink or copy named 'tsget' to avoid that confusion as well.
601 *) Revert blinding in ECDSA sign and instead make problematic addition
602 length-invariant. Switch even to fixed-length Montgomery multiplication.
605 *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
606 step for binary curves. The new implementation is based on formulae from
607 differential addition-and-doubling in mixed Lopez-Dahab projective
608 coordinates, modified to independently blind the operands.
609 [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri]
611 *) Add a scaffold to optionally enhance the Montgomery ladder implementation
612 for `ec_scalar_mul_ladder` (formerly `ec_mul_consttime`) allowing
613 EC_METHODs to implement their own specialized "ladder step", to take
614 advantage of more favorable coordinate systems or more efficient
615 differential addition-and-doubling algorithms.
616 [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri]
618 *) Modified the random device based seed sources to keep the relevant
619 file descriptors open rather than reopening them on each access.
620 This allows such sources to operate in a chroot() jail without
621 the associated device nodes being available. This behaviour can be
622 controlled using RAND_keep_random_devices_open().
625 *) Numerous side-channel attack mitigations have been applied. This may have
626 performance impacts for some algorithms for the benefit of improved
627 security. Specific changes are noted in this change log by their respective
631 *) AIX shared library support overhaul. Switch to AIX "natural" way of
632 handling shared libraries, which means collecting shared objects of
633 different versions and bitnesses in one common archive. This allows to
634 mitigate conflict between 1.0 and 1.1 side-by-side installations. It
635 doesn't affect the way 3rd party applications are linked, only how
636 multi-version installation is managed.
639 *) Make ec_group_do_inverse_ord() more robust and available to other
640 EC cryptosystems, so that irrespective of BN_FLG_CONSTTIME, SCA
641 mitigations are applied to the fallback BN_mod_inverse().
642 When using this function rather than BN_mod_inverse() directly, new
643 EC cryptosystem implementations are then safer-by-default.
646 *) Add coordinate blinding for EC_POINT and implement projective
647 coordinate blinding for generic prime curves as a countermeasure to
648 chosen point SCA attacks.
649 [Sohaib ul Hassan, Nicola Tuveri, Billy Bob Brumley]
651 *) Add blinding to ECDSA and DSA signatures to protect against side channel
652 attacks discovered by Keegan Ryan (NCC Group).
655 *) Enforce checking in the pkeyutl command line app to ensure that the input
656 length does not exceed the maximum supported digest length when performing
657 a sign, verify or verifyrecover operation.
660 *) SSL_MODE_AUTO_RETRY is enabled by default. Applications that use blocking
661 I/O in combination with something like select() or poll() will hang. This
662 can be turned off again using SSL_CTX_clear_mode().
663 Many applications do not properly handle non-application data records, and
664 TLS 1.3 sends more of such records. Setting SSL_MODE_AUTO_RETRY works
665 around the problems in those applications, but can also break some.
666 It's recommended to read the manpages about SSL_read(), SSL_write(),
667 SSL_get_error(), SSL_shutdown(), SSL_CTX_set_mode() and
668 SSL_CTX_set_read_ahead() again.
671 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
672 now allow empty (zero character) pass phrases.
675 *) Apply blinding to binary field modular inversion and remove patent
676 pending (OPENSSL_SUN_GF2M_DIV) BN_GF2m_mod_div implementation.
679 *) Deprecate ec2_mult.c and unify scalar multiplication code paths for
680 binary and prime elliptic curves.
683 *) Remove ECDSA nonce padding: EC_POINT_mul is now responsible for
684 constant time fixed point multiplication.
687 *) Revise elliptic curve scalar multiplication with timing attack
688 defenses: ec_wNAF_mul redirects to a constant time implementation
689 when computing fixed point and variable point multiplication (which
690 in OpenSSL are mostly used with secret scalars in keygen, sign,
691 ECDH derive operations).
692 [Billy Bob Brumley, Nicola Tuveri, Cesar Pereida García,
695 *) Updated CONTRIBUTING
698 *) Updated DRBG / RAND to request nonce and additional low entropy
699 randomness from the system.
700 [Matthias St. Pierre]
702 *) Updated 'openssl rehash' to use OpenSSL consistent default.
705 *) Moved the load of the ssl_conf module to libcrypto, which helps
706 loading engines that libssl uses before libssl is initialised.
709 *) Added EVP_PKEY_sign() and EVP_PKEY_verify() for EdDSA
712 *) Fixed X509_NAME_ENTRY_set to get multi-valued RDNs right in all cases.
713 [Ingo Schwarze, Rich Salz]
715 *) Added output of accepting IP address and port for 'openssl s_server'
718 *) Added a new API for TLSv1.3 ciphersuites:
719 SSL_CTX_set_ciphersuites()
720 SSL_set_ciphersuites()
723 *) Memory allocation failures consistently add an error to the error
727 *) Don't use OPENSSL_ENGINES and OPENSSL_CONF environment values
728 in libcrypto when run as setuid/setgid.
731 *) Load any config file by default when libssl is used.
734 *) Added new public header file <openssl/rand_drbg.h> and documentation
735 for the RAND_DRBG API. See manual page RAND_DRBG(7) for an overview.
736 [Matthias St. Pierre]
738 *) QNX support removed (cannot find contributors to get their approval
739 for the license change).
742 *) TLSv1.3 replay protection for early data has been implemented. See the
743 SSL_read_early_data() man page for further details.
746 *) Separated TLSv1.3 ciphersuite configuration out from TLSv1.2 ciphersuite
747 configuration. TLSv1.3 ciphersuites are not compatible with TLSv1.2 and
748 below. Similarly TLSv1.2 ciphersuites are not compatible with TLSv1.3.
749 In order to avoid issues where legacy TLSv1.2 ciphersuite configuration
750 would otherwise inadvertently disable all TLSv1.3 ciphersuites the
751 configuration has been separated out. See the ciphers man page or the
752 SSL_CTX_set_ciphersuites() man page for more information.
755 *) On POSIX (BSD, Linux, ...) systems the ocsp(1) command running
756 in responder mode now supports the new "-multi" option, which
757 spawns the specified number of child processes to handle OCSP
758 requests. The "-timeout" option now also limits the OCSP
759 responder's patience to wait to receive the full client request
760 on a newly accepted connection. Child processes are respawned
761 as needed, and the CA index file is automatically reloaded
762 when changed. This makes it possible to run the "ocsp" responder
763 as a long-running service, making the OpenSSL CA somewhat more
764 feature-complete. In this mode, most diagnostic messages logged
765 after entering the event loop are logged via syslog(3) rather than
769 *) Added support for X448 and Ed448. Heavily based on original work by
773 *) Extend OSSL_STORE with capabilities to search and to narrow the set of
774 objects loaded. This adds the functions OSSL_STORE_expect() and
775 OSSL_STORE_find() as well as needed tools to construct searches and
776 get the search data out of them.
779 *) Support for TLSv1.3 added. Note that users upgrading from an earlier
780 version of OpenSSL should review their configuration settings to ensure
781 that they are still appropriate for TLSv1.3. For further information see:
782 https://wiki.openssl.org/index.php/TLS1.3
785 *) Grand redesign of the OpenSSL random generator
787 The default RAND method now utilizes an AES-CTR DRBG according to
788 NIST standard SP 800-90Ar1. The new random generator is essentially
789 a port of the default random generator from the OpenSSL FIPS 2.0
790 object module. It is a hybrid deterministic random bit generator
791 using an AES-CTR bit stream and which seeds and reseeds itself
792 automatically using trusted system entropy sources.
794 Some of its new features are:
795 o Support for multiple DRBG instances with seed chaining.
796 o The default RAND method makes use of a DRBG.
797 o There is a public and private DRBG instance.
798 o The DRBG instances are fork-safe.
799 o Keep all global DRBG instances on the secure heap if it is enabled.
800 o The public and private DRBG instance are per thread for lock free
802 [Paul Dale, Benjamin Kaduk, Kurt Roeckx, Rich Salz, Matthias St. Pierre]
804 *) Changed Configure so it only says what it does and doesn't dump
805 so much data. Instead, ./configdata.pm should be used as a script
806 to display all sorts of configuration data.
809 *) Added processing of "make variables" to Configure.
812 *) Added SHA512/224 and SHA512/256 algorithm support.
815 *) The last traces of Netware support, first removed in 1.1.0, have
819 *) Get rid of Makefile.shared, and in the process, make the processing
820 of certain files (rc.obj, or the .def/.map/.opt files produced from
821 the ordinal files) more visible and hopefully easier to trace and
822 debug (or make silent).
825 *) Make it possible to have environment variable assignments as
826 arguments to config / Configure.
829 *) Add multi-prime RSA (RFC 8017) support.
832 *) Add SM3 implemented according to GB/T 32905-2016
833 [ Jack Lloyd <jack.lloyd@ribose.com>,
834 Ronald Tse <ronald.tse@ribose.com>,
835 Erick Borsboom <erick.borsboom@ribose.com> ]
837 *) Add 'Maximum Fragment Length' TLS extension negotiation and support
838 as documented in RFC6066.
839 Based on a patch from Tomasz Moń
840 [Filipe Raimundo da Silva]
842 *) Add SM4 implemented according to GB/T 32907-2016.
843 [ Jack Lloyd <jack.lloyd@ribose.com>,
844 Ronald Tse <ronald.tse@ribose.com>,
845 Erick Borsboom <erick.borsboom@ribose.com> ]
847 *) Reimplement -newreq-nodes and ERR_error_string_n; the
848 original author does not agree with the license change.
851 *) Add ARIA AEAD TLS support.
854 *) Some macro definitions to support VS6 have been removed. Visual
855 Studio 6 has not worked since 1.1.0
858 *) Add ERR_clear_last_mark(), to allow callers to clear the last mark
859 without clearing the errors.
862 *) Add "atfork" functions. If building on a system that without
863 pthreads, see doc/man3/OPENSSL_fork_prepare.pod for application
864 requirements. The RAND facility now uses/requires this.
870 *) The UI API becomes a permanent and integral part of libcrypto, i.e.
871 not possible to disable entirely. However, it's still possible to
872 disable the console reading UI method, UI_OpenSSL() (use UI_null()
875 To disable, configure with 'no-ui-console'. 'no-ui' is still
876 possible to use as an alias. Check at compile time with the
877 macro OPENSSL_NO_UI_CONSOLE. The macro OPENSSL_NO_UI is still
878 possible to check and is an alias for OPENSSL_NO_UI_CONSOLE.
881 *) Add a STORE module, which implements a uniform and URI based reader of
882 stores that can contain keys, certificates, CRLs and numerous other
883 objects. The main API is loosely based on a few stdio functions,
884 and includes OSSL_STORE_open, OSSL_STORE_load, OSSL_STORE_eof,
885 OSSL_STORE_error and OSSL_STORE_close.
886 The implementation uses backends called "loaders" to implement arbitrary
887 URI schemes. There is one built in "loader" for the 'file' scheme.
890 *) Add devcrypto engine. This has been implemented against cryptodev-linux,
891 then adjusted to work on FreeBSD 8.4 as well.
892 Enable by configuring with 'enable-devcryptoeng'. This is done by default
893 on BSD implementations, as cryptodev.h is assumed to exist on all of them.
896 *) Module names can prefixed with OSSL_ or OPENSSL_. This affects
897 util/mkerr.pl, which is adapted to allow those prefixes, leading to
898 error code calls like this:
900 OSSL_FOOerr(OSSL_FOO_F_SOMETHING, OSSL_FOO_R_WHATEVER);
902 With this change, we claim the namespaces OSSL and OPENSSL in a manner
903 that can be encoded in C. For the foreseeable future, this will only
905 [Richard Levitte and Tim Hudson]
907 *) Removed BSD cryptodev engine.
910 *) Add a build target 'build_all_generated', to build all generated files
911 and only that. This can be used to prepare everything that requires
912 things like perl for a system that lacks perl and then move everything
913 to that system and do the rest of the build there.
916 *) In the UI interface, make it possible to duplicate the user data. This
917 can be used by engines that need to retain the data for a longer time
918 than just the call where this user data is passed.
921 *) Ignore the '-named_curve auto' value for compatibility of applications
923 [Tomas Mraz <tmraz@fedoraproject.org>]
925 *) Fragmented SSL/TLS alerts are no longer accepted. An alert message is 2
926 bytes long. In theory it is permissible in SSLv3 - TLSv1.2 to fragment such
927 alerts across multiple records (some of which could be empty). In practice
928 it make no sense to send an empty alert record, or to fragment one. TLSv1.3
929 prohibts this altogether and other libraries (BoringSSL, NSS) do not
930 support this at all. Supporting it adds significant complexity to the
931 record layer, and its removal is unlikely to cause inter-operability
935 *) Add the ASN.1 types INT32, UINT32, INT64, UINT64 and variants prefixed
936 with Z. These are meant to replace LONG and ZLONG and to be size safe.
937 The use of LONG and ZLONG is discouraged and scheduled for deprecation
941 *) Add the 'z' and 'j' modifiers to BIO_printf() et al formatting string,
942 'z' is to be used for [s]size_t, and 'j' - with [u]int64_t.
943 [Richard Levitte, Andy Polyakov]
945 *) Add EC_KEY_get0_engine(), which does for EC_KEY what RSA_get0_engine()
949 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
950 platform rather than 'mingw'.
953 *) The functions X509_STORE_add_cert and X509_STORE_add_crl return
954 success if they are asked to add an object which already exists
955 in the store. This change cascades to other functions which load
956 certificates and CRLs.
959 *) x86_64 assembly pack: annotate code with DWARF CFI directives to
960 facilitate stack unwinding even from assembly subroutines.
963 *) Remove VAX C specific definitions of OPENSSL_EXPORT, OPENSSL_EXTERN.
964 Also remove OPENSSL_GLOBAL entirely, as it became a no-op.
967 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
968 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
969 which is the minimum version we support.
972 *) Certificate time validation (X509_cmp_time) enforces stricter
973 compliance with RFC 5280. Fractional seconds and timezone offsets
974 are no longer allowed.
977 *) Add support for ARIA
980 *) s_client will now send the Server Name Indication (SNI) extension by
981 default unless the new "-noservername" option is used. The server name is
982 based on the host provided to the "-connect" option unless overridden by
986 *) Add support for SipHash
989 *) OpenSSL now fails if it receives an unrecognised record type in TLS1.0
990 or TLS1.1. Previously this only happened in SSLv3 and TLS1.2. This is to
991 prevent issues where no progress is being made and the peer continually
992 sends unrecognised record types, using up resources processing them.
995 *) 'openssl passwd' can now produce SHA256 and SHA512 based output,
996 using the algorithm defined in
997 https://www.akkadia.org/drepper/SHA-crypt.txt
1000 *) Heartbeat support has been removed; the ABI is changed for now.
1001 [Richard Levitte, Rich Salz]
1003 *) Support for SSL_OP_NO_ENCRYPT_THEN_MAC in SSL_CONF_cmd.
1006 *) The RSA "null" method, which was partially supported to avoid patent
1007 issues, has been replaced to always returns NULL.
1011 Changes between 1.1.0h and 1.1.0i [xx XXX xxxx]
1013 *) Client DoS due to large DH parameter
1015 During key agreement in a TLS handshake using a DH(E) based ciphersuite a
1016 malicious server can send a very large prime value to the client. This will
1017 cause the client to spend an unreasonably long period of time generating a
1018 key for this prime resulting in a hang until the client has finished. This
1019 could be exploited in a Denial Of Service attack.
1021 This issue was reported to OpenSSL on 5th June 2018 by Guido Vranken
1025 *) Cache timing vulnerability in RSA Key Generation
1027 The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to
1028 a cache timing side channel attack. An attacker with sufficient access to
1029 mount cache timing attacks during the RSA key generation process could
1030 recover the private key.
1032 This issue was reported to OpenSSL on 4th April 2018 by Alejandro Cabrera
1033 Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia.
1037 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
1038 parameter is no longer accepted, as it leads to a corrupt table. NULL
1039 pem_str is reserved for alias entries only.
1042 *) Revert blinding in ECDSA sign and instead make problematic addition
1043 length-invariant. Switch even to fixed-length Montgomery multiplication.
1046 *) Change generating and checking of primes so that the error rate of not
1047 being prime depends on the intended use based on the size of the input.
1048 For larger primes this will result in more rounds of Miller-Rabin.
1049 The maximal error rate for primes with more than 1080 bits is lowered
1051 [Kurt Roeckx, Annie Yousar]
1053 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64.
1056 *) Add blinding to ECDSA and DSA signatures to protect against side channel
1057 attacks discovered by Keegan Ryan (NCC Group).
1060 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
1061 now allow empty (zero character) pass phrases.
1064 *) Certificate time validation (X509_cmp_time) enforces stricter
1065 compliance with RFC 5280. Fractional seconds and timezone offsets
1066 are no longer allowed.
1069 *) Fixed a text canonicalisation bug in CMS
1071 Where a CMS detached signature is used with text content the text goes
1072 through a canonicalisation process first prior to signing or verifying a
1073 signature. This process strips trailing space at the end of lines, converts
1074 line terminators to CRLF and removes additional trailing line terminators
1075 at the end of a file. A bug in the canonicalisation process meant that
1076 some characters, such as form-feed, were incorrectly treated as whitespace
1077 and removed. This is contrary to the specification (RFC5485). This fix
1078 could mean that detached text data signed with an earlier version of
1079 OpenSSL 1.1.0 may fail to verify using the fixed version, or text data
1080 signed with a fixed OpenSSL may fail to verify with an earlier version of
1081 OpenSSL 1.1.0. A workaround is to only verify the canonicalised text data
1082 and use the "-binary" flag (for the "cms" command line application) or set
1083 the SMIME_BINARY/PKCS7_BINARY/CMS_BINARY flags (if using CMS_verify()).
1086 Changes between 1.1.0g and 1.1.0h [27 Mar 2018]
1088 *) Constructed ASN.1 types with a recursive definition could exceed the stack
1090 Constructed ASN.1 types with a recursive definition (such as can be found
1091 in PKCS7) could eventually exceed the stack given malicious input with
1092 excessive recursion. This could result in a Denial Of Service attack. There
1093 are no such structures used within SSL/TLS that come from untrusted sources
1094 so this is considered safe.
1096 This issue was reported to OpenSSL on 4th January 2018 by the OSS-fuzz
1101 *) Incorrect CRYPTO_memcmp on HP-UX PA-RISC
1103 Because of an implementation bug the PA-RISC CRYPTO_memcmp function is
1104 effectively reduced to only comparing the least significant bit of each
1105 byte. This allows an attacker to forge messages that would be considered as
1106 authenticated in an amount of tries lower than that guaranteed by the
1107 security claims of the scheme. The module can only be compiled by the
1108 HP-UX assembler, so that only HP-UX PA-RISC targets are affected.
1110 This issue was reported to OpenSSL on 2nd March 2018 by Peter Waltenberg
1115 *) Add a build target 'build_all_generated', to build all generated files
1116 and only that. This can be used to prepare everything that requires
1117 things like perl for a system that lacks perl and then move everything
1118 to that system and do the rest of the build there.
1121 *) Backport SSL_OP_NO_RENGOTIATION
1123 OpenSSL 1.0.2 and below had the ability to disable renegotiation using the
1124 (undocumented) SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS flag. Due to the opacity
1125 changes this is no longer possible in 1.1.0. Therefore the new
1126 SSL_OP_NO_RENEGOTIATION option from 1.1.1-dev has been backported to
1127 1.1.0 to provide equivalent functionality.
1129 Note that if an application built against 1.1.0h headers (or above) is run
1130 using an older version of 1.1.0 (prior to 1.1.0h) then the option will be
1131 accepted but nothing will happen, i.e. renegotiation will not be prevented.
1134 *) Removed the OS390-Unix config target. It relied on a script that doesn't
1138 *) rsaz_1024_mul_avx2 overflow bug on x86_64
1140 There is an overflow bug in the AVX2 Montgomery multiplication procedure
1141 used in exponentiation with 1024-bit moduli. No EC algorithms are affected.
1142 Analysis suggests that attacks against RSA and DSA as a result of this
1143 defect would be very difficult to perform and are not believed likely.
1144 Attacks against DH1024 are considered just feasible, because most of the
1145 work necessary to deduce information about a private key may be performed
1146 offline. The amount of resources required for such an attack would be
1147 significant. However, for an attack on TLS to be meaningful, the server
1148 would have to share the DH1024 private key among multiple clients, which is
1149 no longer an option since CVE-2016-0701.
1151 This only affects processors that support the AVX2 but not ADX extensions
1152 like Intel Haswell (4th generation).
1154 This issue was reported to OpenSSL by David Benjamin (Google). The issue
1155 was originally found via the OSS-Fuzz project.
1159 Changes between 1.1.0f and 1.1.0g [2 Nov 2017]
1161 *) bn_sqrx8x_internal carry bug on x86_64
1163 There is a carry propagating bug in the x86_64 Montgomery squaring
1164 procedure. No EC algorithms are affected. Analysis suggests that attacks
1165 against RSA and DSA as a result of this defect would be very difficult to
1166 perform and are not believed likely. Attacks against DH are considered just
1167 feasible (although very difficult) because most of the work necessary to
1168 deduce information about a private key may be performed offline. The amount
1169 of resources required for such an attack would be very significant and
1170 likely only accessible to a limited number of attackers. An attacker would
1171 additionally need online access to an unpatched system using the target
1172 private key in a scenario with persistent DH parameters and a private
1173 key that is shared between multiple clients.
1175 This only affects processors that support the BMI1, BMI2 and ADX extensions
1176 like Intel Broadwell (5th generation) and later or AMD Ryzen.
1178 This issue was reported to OpenSSL by the OSS-Fuzz project.
1182 *) Malformed X.509 IPAddressFamily could cause OOB read
1184 If an X.509 certificate has a malformed IPAddressFamily extension,
1185 OpenSSL could do a one-byte buffer overread. The most likely result
1186 would be an erroneous display of the certificate in text format.
1188 This issue was reported to OpenSSL by the OSS-Fuzz project.
1192 Changes between 1.1.0e and 1.1.0f [25 May 2017]
1194 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
1195 platform rather than 'mingw'.
1198 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
1199 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
1200 which is the minimum version we support.
1203 Changes between 1.1.0d and 1.1.0e [16 Feb 2017]
1205 *) Encrypt-Then-Mac renegotiation crash
1207 During a renegotiation handshake if the Encrypt-Then-Mac extension is
1208 negotiated where it was not in the original handshake (or vice-versa) then
1209 this can cause OpenSSL to crash (dependant on ciphersuite). Both clients
1210 and servers are affected.
1212 This issue was reported to OpenSSL by Joe Orton (Red Hat).
1216 Changes between 1.1.0c and 1.1.0d [26 Jan 2017]
1218 *) Truncated packet could crash via OOB read
1220 If one side of an SSL/TLS path is running on a 32-bit host and a specific
1221 cipher is being used, then a truncated packet can cause that host to
1222 perform an out-of-bounds read, usually resulting in a crash.
1224 This issue was reported to OpenSSL by Robert Święcki of Google.
1228 *) Bad (EC)DHE parameters cause a client crash
1230 If a malicious server supplies bad parameters for a DHE or ECDHE key
1231 exchange then this can result in the client attempting to dereference a
1232 NULL pointer leading to a client crash. This could be exploited in a Denial
1235 This issue was reported to OpenSSL by Guido Vranken.
1239 *) BN_mod_exp may produce incorrect results on x86_64
1241 There is a carry propagating bug in the x86_64 Montgomery squaring
1242 procedure. No EC algorithms are affected. Analysis suggests that attacks
1243 against RSA and DSA as a result of this defect would be very difficult to
1244 perform and are not believed likely. Attacks against DH are considered just
1245 feasible (although very difficult) because most of the work necessary to
1246 deduce information about a private key may be performed offline. The amount
1247 of resources required for such an attack would be very significant and
1248 likely only accessible to a limited number of attackers. An attacker would
1249 additionally need online access to an unpatched system using the target
1250 private key in a scenario with persistent DH parameters and a private
1251 key that is shared between multiple clients. For example this can occur by
1252 default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very
1253 similar to CVE-2015-3193 but must be treated as a separate problem.
1255 This issue was reported to OpenSSL by the OSS-Fuzz project.
1259 Changes between 1.1.0b and 1.1.0c [10 Nov 2016]
1261 *) ChaCha20/Poly1305 heap-buffer-overflow
1263 TLS connections using *-CHACHA20-POLY1305 ciphersuites are susceptible to
1264 a DoS attack by corrupting larger payloads. This can result in an OpenSSL
1265 crash. This issue is not considered to be exploitable beyond a DoS.
1267 This issue was reported to OpenSSL by Robert Święcki (Google Security Team)
1271 *) CMS Null dereference
1273 Applications parsing invalid CMS structures can crash with a NULL pointer
1274 dereference. This is caused by a bug in the handling of the ASN.1 CHOICE
1275 type in OpenSSL 1.1.0 which can result in a NULL value being passed to the
1276 structure callback if an attempt is made to free certain invalid encodings.
1277 Only CHOICE structures using a callback which do not handle NULL value are
1280 This issue was reported to OpenSSL by Tyler Nighswander of ForAllSecure.
1284 *) Montgomery multiplication may produce incorrect results
1286 There is a carry propagating bug in the Broadwell-specific Montgomery
1287 multiplication procedure that handles input lengths divisible by, but
1288 longer than 256 bits. Analysis suggests that attacks against RSA, DSA
1289 and DH private keys are impossible. This is because the subroutine in
1290 question is not used in operations with the private key itself and an input
1291 of the attacker's direct choice. Otherwise the bug can manifest itself as
1292 transient authentication and key negotiation failures or reproducible
1293 erroneous outcome of public-key operations with specially crafted input.
1294 Among EC algorithms only Brainpool P-512 curves are affected and one
1295 presumably can attack ECDH key negotiation. Impact was not analyzed in
1296 detail, because pre-requisites for attack are considered unlikely. Namely
1297 multiple clients have to choose the curve in question and the server has to
1298 share the private key among them, neither of which is default behaviour.
1299 Even then only clients that chose the curve will be affected.
1301 This issue was publicly reported as transient failures and was not
1302 initially recognized as a security issue. Thanks to Richard Morgan for
1303 providing reproducible case.
1307 *) Removed automatic addition of RPATH in shared libraries and executables,
1308 as this was a remainder from OpenSSL 1.0.x and isn't needed any more.
1311 Changes between 1.1.0a and 1.1.0b [26 Sep 2016]
1313 *) Fix Use After Free for large message sizes
1315 The patch applied to address CVE-2016-6307 resulted in an issue where if a
1316 message larger than approx 16k is received then the underlying buffer to
1317 store the incoming message is reallocated and moved. Unfortunately a
1318 dangling pointer to the old location is left which results in an attempt to
1319 write to the previously freed location. This is likely to result in a
1320 crash, however it could potentially lead to execution of arbitrary code.
1322 This issue only affects OpenSSL 1.1.0a.
1324 This issue was reported to OpenSSL by Robert Święcki.
1328 Changes between 1.1.0 and 1.1.0a [22 Sep 2016]
1330 *) OCSP Status Request extension unbounded memory growth
1332 A malicious client can send an excessively large OCSP Status Request
1333 extension. If that client continually requests renegotiation, sending a
1334 large OCSP Status Request extension each time, then there will be unbounded
1335 memory growth on the server. This will eventually lead to a Denial Of
1336 Service attack through memory exhaustion. Servers with a default
1337 configuration are vulnerable even if they do not support OCSP. Builds using
1338 the "no-ocsp" build time option are not affected.
1340 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
1344 *) SSL_peek() hang on empty record
1346 OpenSSL 1.1.0 SSL/TLS will hang during a call to SSL_peek() if the peer
1347 sends an empty record. This could be exploited by a malicious peer in a
1348 Denial Of Service attack.
1350 This issue was reported to OpenSSL by Alex Gaynor.
1354 *) Excessive allocation of memory in tls_get_message_header() and
1355 dtls1_preprocess_fragment()
1357 A (D)TLS message includes 3 bytes for its length in the header for the
1358 message. This would allow for messages up to 16Mb in length. Messages of
1359 this length are excessive and OpenSSL includes a check to ensure that a
1360 peer is sending reasonably sized messages in order to avoid too much memory
1361 being consumed to service a connection. A flaw in the logic of version
1362 1.1.0 means that memory for the message is allocated too early, prior to
1363 the excessive message length check. Due to way memory is allocated in
1364 OpenSSL this could mean an attacker could force up to 21Mb to be allocated
1365 to service a connection. This could lead to a Denial of Service through
1366 memory exhaustion. However, the excessive message length check still takes
1367 place, and this would cause the connection to immediately fail. Assuming
1368 that the application calls SSL_free() on the failed connection in a timely
1369 manner then the 21Mb of allocated memory will then be immediately freed
1370 again. Therefore the excessive memory allocation will be transitory in
1371 nature. This then means that there is only a security impact if:
1373 1) The application does not call SSL_free() in a timely manner in the event
1374 that the connection fails
1376 2) The application is working in a constrained environment where there is
1377 very little free memory
1379 3) The attacker initiates multiple connection attempts such that there are
1380 multiple connections in a state where memory has been allocated for the
1381 connection; SSL_free() has not yet been called; and there is insufficient
1382 memory to service the multiple requests.
1384 Except in the instance of (1) above any Denial Of Service is likely to be
1385 transitory because as soon as the connection fails the memory is
1386 subsequently freed again in the SSL_free() call. However there is an
1387 increased risk during this period of application crashes due to the lack of
1388 memory - which would then mean a more serious Denial of Service.
1390 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
1391 (CVE-2016-6307 and CVE-2016-6308)
1394 *) solaris-x86-cc, i.e. 32-bit configuration with vendor compiler,
1395 had to be removed. Primary reason is that vendor assembler can't
1396 assemble our modules with -KPIC flag. As result it, assembly
1397 support, was not even available as option. But its lack means
1398 lack of side-channel resistant code, which is incompatible with
1399 security by todays standards. Fortunately gcc is readily available
1400 prepackaged option, which we firmly point at...
1403 Changes between 1.0.2h and 1.1.0 [25 Aug 2016]
1405 *) Windows command-line tool supports UTF-8 opt-in option for arguments
1406 and console input. Setting OPENSSL_WIN32_UTF8 environment variable
1407 (to any value) allows Windows user to access PKCS#12 file generated
1408 with Windows CryptoAPI and protected with non-ASCII password, as well
1409 as files generated under UTF-8 locale on Linux also protected with
1413 *) To mitigate the SWEET32 attack (CVE-2016-2183), 3DES cipher suites
1414 have been disabled by default and removed from DEFAULT, just like RC4.
1415 See the RC4 item below to re-enable both.
1418 *) The method for finding the storage location for the Windows RAND seed file
1419 has changed. First we check %RANDFILE%. If that is not set then we check
1420 the directories %HOME%, %USERPROFILE% and %SYSTEMROOT% in that order. If
1421 all else fails we fall back to C:\.
1424 *) The EVP_EncryptUpdate() function has had its return type changed from void
1425 to int. A return of 0 indicates and error while a return of 1 indicates
1429 *) The flags RSA_FLAG_NO_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME and
1430 DH_FLAG_NO_EXP_CONSTTIME which previously provided the ability to switch
1431 off the constant time implementation for RSA, DSA and DH have been made
1432 no-ops and deprecated.
1435 *) Windows RAND implementation was simplified to only get entropy by
1436 calling CryptGenRandom(). Various other RAND-related tickets
1438 [Joseph Wylie Yandle, Rich Salz]
1440 *) The stack and lhash API's were renamed to start with OPENSSL_SK_
1441 and OPENSSL_LH_, respectively. The old names are available
1442 with API compatibility. They new names are now completely documented.
1445 *) Unify TYPE_up_ref(obj) methods signature.
1446 SSL_CTX_up_ref(), SSL_up_ref(), X509_up_ref(), EVP_PKEY_up_ref(),
1447 X509_CRL_up_ref(), X509_OBJECT_up_ref_count() methods are now returning an
1448 int (instead of void) like all others TYPE_up_ref() methods.
1449 So now these methods also check the return value of CRYPTO_atomic_add(),
1450 and the validity of object reference counter.
1451 [fdasilvayy@gmail.com]
1453 *) With Windows Visual Studio builds, the .pdb files are installed
1454 alongside the installed libraries and executables. For a static
1455 library installation, ossl_static.pdb is the associate compiler
1456 generated .pdb file to be used when linking programs.
1459 *) Remove openssl.spec. Packaging files belong with the packagers.
1462 *) Automatic Darwin/OSX configuration has had a refresh, it will now
1463 recognise x86_64 architectures automatically. You can still decide
1464 to build for a different bitness with the environment variable
1465 KERNEL_BITS (can be 32 or 64), for example:
1467 KERNEL_BITS=32 ./config
1471 *) Change default algorithms in pkcs8 utility to use PKCS#5 v2.0,
1472 256 bit AES and HMAC with SHA256.
1475 *) Remove support for MIPS o32 ABI on IRIX (and IRIX only).
1478 *) Triple-DES ciphers have been moved from HIGH to MEDIUM.
1481 *) To enable users to have their own config files and build file templates,
1482 Configure looks in the directory indicated by the environment variable
1483 OPENSSL_LOCAL_CONFIG_DIR as well as the in-source Configurations/
1484 directory. On VMS, OPENSSL_LOCAL_CONFIG_DIR is expected to be a logical
1485 name and is used as is.
1488 *) The following datatypes were made opaque: X509_OBJECT, X509_STORE_CTX,
1489 X509_STORE, X509_LOOKUP, and X509_LOOKUP_METHOD. The unused type
1490 X509_CERT_FILE_CTX was removed.
1493 *) "shared" builds are now the default. To create only static libraries use
1494 the "no-shared" Configure option.
1497 *) Remove the no-aes, no-hmac, no-rsa, no-sha and no-md5 Configure options.
1498 All of these option have not worked for some while and are fundamental
1502 *) Make various cleanup routines no-ops and mark them as deprecated. Most
1503 global cleanup functions are no longer required because they are handled
1504 via auto-deinit (see OPENSSL_init_crypto and OPENSSL_init_ssl man pages).
1505 Explicitly de-initing can cause problems (e.g. where a library that uses
1506 OpenSSL de-inits, but an application is still using it). The affected
1507 functions are CONF_modules_free(), ENGINE_cleanup(), OBJ_cleanup(),
1508 EVP_cleanup(), BIO_sock_cleanup(), CRYPTO_cleanup_all_ex_data(),
1509 RAND_cleanup(), SSL_COMP_free_compression_methods(), ERR_free_strings() and
1510 COMP_zlib_cleanup().
1513 *) --strict-warnings no longer enables runtime debugging options
1514 such as REF_DEBUG. Instead, debug options are automatically
1515 enabled with '--debug' builds.
1516 [Andy Polyakov, Emilia Käsper]
1518 *) Made DH and DH_METHOD opaque. The structures for managing DH objects
1519 have been moved out of the public header files. New functions for managing
1520 these have been added.
1523 *) Made RSA and RSA_METHOD opaque. The structures for managing RSA
1524 objects have been moved out of the public header files. New
1525 functions for managing these have been added.
1528 *) Made DSA and DSA_METHOD opaque. The structures for managing DSA objects
1529 have been moved out of the public header files. New functions for managing
1530 these have been added.
1533 *) Made BIO and BIO_METHOD opaque. The structures for managing BIOs have been
1534 moved out of the public header files. New functions for managing these
1538 *) Removed no-rijndael as a config option. Rijndael is an old name for AES.
1541 *) Removed the mk1mf build scripts.
1544 *) Headers are now wrapped, if necessary, with OPENSSL_NO_xxx, so
1545 it is always safe to #include a header now.
1548 *) Removed the aged BC-32 config and all its supporting scripts
1551 *) Removed support for Ultrix, Netware, and OS/2.
1554 *) Add support for HKDF.
1555 [Alessandro Ghedini]
1557 *) Add support for blake2b and blake2s
1560 *) Added support for "pipelining". Ciphers that have the
1561 EVP_CIPH_FLAG_PIPELINE flag set have a capability to process multiple
1562 encryptions/decryptions simultaneously. There are currently no built-in
1563 ciphers with this property but the expectation is that engines will be able
1564 to offer it to significantly improve throughput. Support has been extended
1565 into libssl so that multiple records for a single connection can be
1566 processed in one go (for >=TLS 1.1).
1569 *) Added the AFALG engine. This is an async capable engine which is able to
1570 offload work to the Linux kernel. In this initial version it only supports
1571 AES128-CBC. The kernel must be version 4.1.0 or greater.
1574 *) OpenSSL now uses a new threading API. It is no longer necessary to
1575 set locking callbacks to use OpenSSL in a multi-threaded environment. There
1576 are two supported threading models: pthreads and windows threads. It is
1577 also possible to configure OpenSSL at compile time for "no-threads". The
1578 old threading API should no longer be used. The functions have been
1579 replaced with "no-op" compatibility macros.
1580 [Alessandro Ghedini, Matt Caswell]
1582 *) Modify behavior of ALPN to invoke callback after SNI/servername
1583 callback, such that updates to the SSL_CTX affect ALPN.
1586 *) Add SSL_CIPHER queries for authentication and key-exchange.
1589 *) Changes to the DEFAULT cipherlist:
1590 - Prefer (EC)DHE handshakes over plain RSA.
1591 - Prefer AEAD ciphers over legacy ciphers.
1592 - Prefer ECDSA over RSA when both certificates are available.
1593 - Prefer TLSv1.2 ciphers/PRF.
1594 - Remove DSS, SEED, IDEA, CAMELLIA, and AES-CCM from the
1598 *) Change the ECC default curve list to be this, in order: x25519,
1599 secp256r1, secp521r1, secp384r1.
1602 *) RC4 based libssl ciphersuites are now classed as "weak" ciphers and are
1603 disabled by default. They can be re-enabled using the
1604 enable-weak-ssl-ciphers option to Configure.
1607 *) If the server has ALPN configured, but supports no protocols that the
1608 client advertises, send a fatal "no_application_protocol" alert.
1609 This behaviour is SHALL in RFC 7301, though it isn't universally
1610 implemented by other servers.
1613 *) Add X25519 support.
1614 Add ASN.1 and EVP_PKEY methods for X25519. This includes support
1615 for public and private key encoding using the format documented in
1616 draft-ietf-curdle-pkix-02. The corresponding EVP_PKEY method supports
1617 key generation and key derivation.
1619 TLS support complies with draft-ietf-tls-rfc4492bis-08 and uses
1623 *) Deprecate SRP_VBASE_get_by_user.
1624 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
1625 In order to fix an unavoidable memory leak (CVE-2016-0798),
1626 SRP_VBASE_get_by_user was changed to ignore the "fake user" SRP
1627 seed, even if the seed is configured.
1629 Users should use SRP_VBASE_get1_by_user instead. Note that in
1630 SRP_VBASE_get1_by_user, caller must free the returned value. Note
1631 also that even though configuring the SRP seed attempts to hide
1632 invalid usernames by continuing the handshake with fake
1633 credentials, this behaviour is not constant time and no strong
1634 guarantees are made that the handshake is indistinguishable from
1635 that of a valid user.
1638 *) Configuration change; it's now possible to build dynamic engines
1639 without having to build shared libraries and vice versa. This
1640 only applies to the engines in engines/, those in crypto/engine/
1641 will always be built into libcrypto (i.e. "static").
1643 Building dynamic engines is enabled by default; to disable, use
1644 the configuration option "disable-dynamic-engine".
1646 The only requirements for building dynamic engines are the
1647 presence of the DSO module and building with position independent
1648 code, so they will also automatically be disabled if configuring
1649 with "disable-dso" or "disable-pic".
1651 The macros OPENSSL_NO_STATIC_ENGINE and OPENSSL_NO_DYNAMIC_ENGINE
1652 are also taken away from openssl/opensslconf.h, as they are
1656 *) Configuration change; if there is a known flag to compile
1657 position independent code, it will always be applied on the
1658 libcrypto and libssl object files, and never on the application
1659 object files. This means other libraries that use routines from
1660 libcrypto / libssl can be made into shared libraries regardless
1661 of how OpenSSL was configured.
1663 If this isn't desirable, the configuration options "disable-pic"
1664 or "no-pic" can be used to disable the use of PIC. This will
1665 also disable building shared libraries and dynamic engines.
1668 *) Removed JPAKE code. It was experimental and has no wide use.
1671 *) The INSTALL_PREFIX Makefile variable has been renamed to
1672 DESTDIR. That makes for less confusion on what this variable
1673 is for. Also, the configuration option --install_prefix is
1677 *) Heartbeat for TLS has been removed and is disabled by default
1678 for DTLS; configure with enable-heartbeats. Code that uses the
1679 old #define's might need to be updated.
1680 [Emilia Käsper, Rich Salz]
1682 *) Rename REF_CHECK to REF_DEBUG.
1685 *) New "unified" build system
1687 The "unified" build system is aimed to be a common system for all
1688 platforms we support. With it comes new support for VMS.
1690 This system builds supports building in a different directory tree
1691 than the source tree. It produces one Makefile (for unix family
1692 or lookalikes), or one descrip.mms (for VMS).
1694 The source of information to make the Makefile / descrip.mms is
1695 small files called 'build.info', holding the necessary
1696 information for each directory with source to compile, and a
1697 template in Configurations, like unix-Makefile.tmpl or
1700 With this change, the library names were also renamed on Windows
1701 and on VMS. They now have names that are closer to the standard
1702 on Unix, and include the major version number, and in certain
1703 cases, the architecture they are built for. See "Notes on shared
1704 libraries" in INSTALL.
1706 We rely heavily on the perl module Text::Template.
1709 *) Added support for auto-initialisation and de-initialisation of the library.
1710 OpenSSL no longer requires explicit init or deinit routines to be called,
1711 except in certain circumstances. See the OPENSSL_init_crypto() and
1712 OPENSSL_init_ssl() man pages for further information.
1715 *) The arguments to the DTLSv1_listen function have changed. Specifically the
1716 "peer" argument is now expected to be a BIO_ADDR object.
1718 *) Rewrite of BIO networking library. The BIO library lacked consistent
1719 support of IPv6, and adding it required some more extensive
1720 modifications. This introduces the BIO_ADDR and BIO_ADDRINFO types,
1721 which hold all types of addresses and chains of address information.
1722 It also introduces a new API, with functions like BIO_socket,
1723 BIO_connect, BIO_listen, BIO_lookup and a rewrite of BIO_accept.
1724 The source/sink BIOs BIO_s_connect, BIO_s_accept and BIO_s_datagram
1725 have been adapted accordingly.
1728 *) RSA_padding_check_PKCS1_type_1 now accepts inputs with and without
1732 *) CRIME protection: disable compression by default, even if OpenSSL is
1733 compiled with zlib enabled. Applications can still enable compression
1734 by calling SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION), or by
1735 using the SSL_CONF library to configure compression.
1738 *) The signature of the session callback configured with
1739 SSL_CTX_sess_set_get_cb was changed. The read-only input buffer
1740 was explicitly marked as 'const unsigned char*' instead of
1744 *) Always DPURIFY. Remove the use of uninitialized memory in the
1745 RNG, and other conditional uses of DPURIFY. This makes -DPURIFY a no-op.
1748 *) Removed many obsolete configuration items, including
1749 DES_PTR, DES_RISC1, DES_RISC2, DES_INT
1750 MD2_CHAR, MD2_INT, MD2_LONG
1752 IDEA_SHORT, IDEA_LONG
1753 RC2_SHORT, RC2_LONG, RC4_LONG, RC4_CHUNK, RC4_INDEX
1754 [Rich Salz, with advice from Andy Polyakov]
1756 *) Many BN internals have been moved to an internal header file.
1757 [Rich Salz with help from Andy Polyakov]
1759 *) Configuration and writing out the results from it has changed.
1760 Files such as Makefile include/openssl/opensslconf.h and are now
1761 produced through general templates, such as Makefile.in and
1762 crypto/opensslconf.h.in and some help from the perl module
1765 Also, the center of configuration information is no longer
1766 Makefile. Instead, Configure produces a perl module in
1767 configdata.pm which holds most of the config data (in the hash
1768 table %config), the target data that comes from the target
1769 configuration in one of the Configurations/*.conf files (in
1773 *) To clarify their intended purposes, the Configure options
1774 --prefix and --openssldir change their semantics, and become more
1775 straightforward and less interdependent.
1777 --prefix shall be used exclusively to give the location INSTALLTOP
1778 where programs, scripts, libraries, include files and manuals are
1779 going to be installed. The default is now /usr/local.
1781 --openssldir shall be used exclusively to give the default
1782 location OPENSSLDIR where certificates, private keys, CRLs are
1783 managed. This is also where the default openssl.cnf gets
1785 If the directory given with this option is a relative path, the
1786 values of both the --prefix value and the --openssldir value will
1787 be combined to become OPENSSLDIR.
1788 The default for --openssldir is INSTALLTOP/ssl.
1790 Anyone who uses --openssldir to specify where OpenSSL is to be
1791 installed MUST change to use --prefix instead.
1794 *) The GOST engine was out of date and therefore it has been removed. An up
1795 to date GOST engine is now being maintained in an external repository.
1796 See: https://wiki.openssl.org/index.php/Binaries. Libssl still retains
1797 support for GOST ciphersuites (these are only activated if a GOST engine
1801 *) EGD is no longer supported by default; use enable-egd when
1803 [Ben Kaduk and Rich Salz]
1805 *) The distribution now has Makefile.in files, which are used to
1806 create Makefile's when Configure is run. *Configure must be run
1807 before trying to build now.*
1810 *) The return value for SSL_CIPHER_description() for error conditions
1814 *) Support for RFC6698/RFC7671 DANE TLSA peer authentication.
1816 Obtaining and performing DNSSEC validation of TLSA records is
1817 the application's responsibility. The application provides
1818 the TLSA records of its choice to OpenSSL, and these are then
1819 used to authenticate the peer.
1821 The TLSA records need not even come from DNS. They can, for
1822 example, be used to implement local end-entity certificate or
1823 trust-anchor "pinning", where the "pin" data takes the form
1824 of TLSA records, which can augment or replace verification
1825 based on the usual WebPKI public certification authorities.
1828 *) Revert default OPENSSL_NO_DEPRECATED setting. Instead OpenSSL
1829 continues to support deprecated interfaces in default builds.
1830 However, applications are strongly advised to compile their
1831 source files with -DOPENSSL_API_COMPAT=0x10100000L, which hides
1832 the declarations of all interfaces deprecated in 0.9.8, 1.0.0
1833 or the 1.1.0 releases.
1835 In environments in which all applications have been ported to
1836 not use any deprecated interfaces OpenSSL's Configure script
1837 should be used with the --api=1.1.0 option to entirely remove
1838 support for the deprecated features from the library and
1839 unconditionally disable them in the installed headers.
1840 Essentially the same effect can be achieved with the "no-deprecated"
1841 argument to Configure, except that this will always restrict
1842 the build to just the latest API, rather than a fixed API
1845 As applications are ported to future revisions of the API,
1846 they should update their compile-time OPENSSL_API_COMPAT define
1847 accordingly, but in most cases should be able to continue to
1848 compile with later releases.
1850 The OPENSSL_API_COMPAT versions for 1.0.0, and 0.9.8 are
1851 0x10000000L and 0x00908000L, respectively. However those
1852 versions did not support the OPENSSL_API_COMPAT feature, and
1853 so applications are not typically tested for explicit support
1854 of just the undeprecated features of either release.
1857 *) Add support for setting the minimum and maximum supported protocol.
1858 It can bet set via the SSL_set_min_proto_version() and
1859 SSL_set_max_proto_version(), or via the SSL_CONF's MinProtocol and
1860 MaxProtocol. It's recommended to use the new APIs to disable
1861 protocols instead of disabling individual protocols using
1862 SSL_set_options() or SSL_CONF's Protocol. This change also
1863 removes support for disabling TLS 1.2 in the OpenSSL TLS
1864 client at compile time by defining OPENSSL_NO_TLS1_2_CLIENT.
1867 *) Support for ChaCha20 and Poly1305 added to libcrypto and libssl.
1870 *) New EC_KEY_METHOD, this replaces the older ECDSA_METHOD and ECDH_METHOD
1871 and integrates ECDSA and ECDH functionality into EC. Implementations can
1872 now redirect key generation and no longer need to convert to or from
1875 Note: the ecdsa.h and ecdh.h headers are now no longer needed and just
1876 include the ec.h header file instead.
1879 *) Remove support for all 40 and 56 bit ciphers. This includes all the export
1880 ciphers who are no longer supported and drops support the ephemeral RSA key
1881 exchange. The LOW ciphers currently doesn't have any ciphers in it.
1884 *) Made EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX, EVP_CIPHER and HMAC_CTX
1885 opaque. For HMAC_CTX, the following constructors and destructors
1888 HMAC_CTX *HMAC_CTX_new(void);
1889 void HMAC_CTX_free(HMAC_CTX *ctx);
1891 For EVP_MD and EVP_CIPHER, complete APIs to create, fill and
1892 destroy such methods has been added. See EVP_MD_meth_new(3) and
1893 EVP_CIPHER_meth_new(3) for documentation.
1896 1) EVP_MD_CTX_cleanup(), EVP_CIPHER_CTX_cleanup() and
1897 HMAC_CTX_cleanup() were removed. HMAC_CTX_reset() and
1898 EVP_MD_CTX_reset() should be called instead to reinitialise
1899 an already created structure.
1900 2) For consistency with the majority of our object creators and
1901 destructors, EVP_MD_CTX_(create|destroy) were renamed to
1902 EVP_MD_CTX_(new|free). The old names are retained as macros
1903 for deprecated builds.
1906 *) Added ASYNC support. Libcrypto now includes the async sub-library to enable
1907 cryptographic operations to be performed asynchronously as long as an
1908 asynchronous capable engine is used. See the ASYNC_start_job() man page for
1909 further details. Libssl has also had this capability integrated with the
1910 introduction of the new mode SSL_MODE_ASYNC and associated error
1911 SSL_ERROR_WANT_ASYNC. See the SSL_CTX_set_mode() and SSL_get_error() man
1912 pages. This work was developed in partnership with Intel Corp.
1915 *) SSL_{CTX_}set_ecdh_auto() has been removed and ECDH is support is
1916 always enabled now. If you want to disable the support you should
1917 exclude it using the list of supported ciphers. This also means that the
1918 "-no_ecdhe" option has been removed from s_server.
1921 *) SSL_{CTX}_set_tmp_ecdh() which can set 1 EC curve now internally calls
1922 SSL_{CTX_}set1_curves() which can set a list.
1925 *) Remove support for SSL_{CTX_}set_tmp_ecdh_callback(). You should set the
1926 curve you want to support using SSL_{CTX_}set1_curves().
1929 *) State machine rewrite. The state machine code has been significantly
1930 refactored in order to remove much duplication of code and solve issues
1931 with the old code (see ssl/statem/README for further details). This change
1932 does have some associated API changes. Notably the SSL_state() function
1933 has been removed and replaced by SSL_get_state which now returns an
1934 "OSSL_HANDSHAKE_STATE" instead of an int. SSL_set_state() has been removed
1935 altogether. The previous handshake states defined in ssl.h and ssl3.h have
1939 *) All instances of the string "ssleay" in the public API were replaced
1940 with OpenSSL (case-matching; e.g., OPENSSL_VERSION for #define's)
1941 Some error codes related to internal RSA_eay API's were renamed.
1944 *) The demo files in crypto/threads were moved to demo/threads.
1947 *) Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron, gmp,
1949 [Matt Caswell, Rich Salz]
1951 *) New ASN.1 embed macro.
1953 New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the
1954 structure is not allocated: it is part of the parent. That is instead of
1962 This reduces memory fragmentation and make it impossible to accidentally
1963 set a mandatory field to NULL.
1965 This currently only works for some fields specifically a SEQUENCE, CHOICE,
1966 or ASN1_STRING type which is part of a parent SEQUENCE. Since it is
1967 equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or
1971 *) Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled.
1974 *) Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although
1975 in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also
1976 an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add
1977 DES and RC4 ciphersuites.
1980 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
1981 This changes the decoding behaviour for some invalid messages,
1982 though the change is mostly in the more lenient direction, and
1983 legacy behaviour is preserved as much as possible.
1986 *) Fix no-stdio build.
1987 [ David Woodhouse <David.Woodhouse@intel.com> and also
1988 Ivan Nestlerode <ivan.nestlerode@sonos.com> ]
1990 *) New testing framework
1991 The testing framework has been largely rewritten and is now using
1992 perl and the perl modules Test::Harness and an extended variant of
1993 Test::More called OpenSSL::Test to do its work. All test scripts in
1994 test/ have been rewritten into test recipes, and all direct calls to
1995 executables in test/Makefile have become individual recipes using the
1996 simplified testing OpenSSL::Test::Simple.
1998 For documentation on our testing modules, do:
2000 perldoc test/testlib/OpenSSL/Test/Simple.pm
2001 perldoc test/testlib/OpenSSL/Test.pm
2005 *) Revamped memory debug; only -DCRYPTO_MDEBUG and -DCRYPTO_MDEBUG_ABORT
2006 are used; the latter aborts on memory leaks (usually checked on exit).
2007 Some undocumented "set malloc, etc., hooks" functions were removed
2008 and others were changed. All are now documented.
2011 *) In DSA_generate_parameters_ex, if the provided seed is too short,
2013 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
2015 *) Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
2016 from RFC4279, RFC4785, RFC5487, RFC5489.
2018 Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the
2019 original RSA_PSK patch.
2022 *) Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay
2023 era flag was never set throughout the codebase (only read). Also removed
2024 SSL3_FLAGS_POP_BUFFER which was only used if
2025 SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set.
2028 *) Changed the default name options in the "ca", "crl", "req" and "x509"
2029 to be "oneline" instead of "compat".
2032 *) Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're
2033 not aware of clients that still exhibit this bug, and the workaround
2034 hasn't been working properly for a while.
2037 *) The return type of BIO_number_read() and BIO_number_written() as well as
2038 the corresponding num_read and num_write members in the BIO structure has
2039 changed from unsigned long to uint64_t. On platforms where an unsigned
2040 long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is
2044 *) Given the pervasive nature of TLS extensions it is inadvisable to run
2045 OpenSSL without support for them. It also means that maintaining
2046 the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
2047 not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
2050 *) Removed support for the two export grade static DH ciphersuites
2051 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
2052 were newly added (along with a number of other static DH ciphersuites) to
2053 1.0.2. However the two export ones have *never* worked since they were
2054 introduced. It seems strange in any case to be adding new export
2055 ciphersuites, and given "logjam" it also does not seem correct to fix them.
2058 *) Version negotiation has been rewritten. In particular SSLv23_method(),
2059 SSLv23_client_method() and SSLv23_server_method() have been deprecated,
2060 and turned into macros which simply call the new preferred function names
2061 TLS_method(), TLS_client_method() and TLS_server_method(). All new code
2062 should use the new names instead. Also as part of this change the ssl23.h
2063 header file has been removed.
2066 *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
2067 code and the associated standard is no longer considered fit-for-purpose.
2070 *) RT2547 was closed. When generating a private key, try to make the
2071 output file readable only by the owner. This behavior change might
2072 be noticeable when interacting with other software.
2074 *) Documented all exdata functions. Added CRYPTO_free_ex_index.
2078 *) Added HTTP GET support to the ocsp command.
2081 *) Changed default digest for the dgst and enc commands from MD5 to
2085 *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
2088 *) Added support for TLS extended master secret from
2089 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
2090 initial patch which was a great help during development.
2093 *) All libssl internal structures have been removed from the public header
2094 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
2095 now redundant). Users should not attempt to access internal structures
2096 directly. Instead they should use the provided API functions.
2099 *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
2100 Access to deprecated functions can be re-enabled by running config with
2101 "enable-deprecated". In addition applications wishing to use deprecated
2102 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
2103 will, by default, disable some transitive includes that previously existed
2104 in the header files (e.g. ec.h will no longer, by default, include bn.h)
2107 *) Added support for OCB mode. OpenSSL has been granted a patent license
2108 compatible with the OpenSSL license for use of OCB. Details are available
2109 at https://www.openssl.org/source/OCB-patent-grant-OpenSSL.pdf. Support
2110 for OCB can be removed by calling config with no-ocb.
2113 *) SSLv2 support has been removed. It still supports receiving a SSLv2
2114 compatible client hello.
2117 *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
2118 done while fixing the error code for the key-too-small case.
2119 [Annie Yousar <a.yousar@informatik.hu-berlin.de>]
2121 *) CA.sh has been removed; use CA.pl instead.
2124 *) Removed old DES API.
2127 *) Remove various unsupported platforms:
2133 Sinix/ReliantUNIX RM400
2138 16-bit platforms such as WIN16
2141 *) Clean up OPENSSL_NO_xxx #define's
2142 Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
2143 Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
2144 OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
2145 OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
2146 OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
2147 Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
2148 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
2149 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
2150 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
2151 Remove MS_STATIC; it's a relic from platforms <32 bits.
2154 *) Cleaned up dead code
2155 Remove all but one '#ifdef undef' which is to be looked at.
2158 *) Clean up calling of xxx_free routines.
2159 Just like free(), fix most of the xxx_free routines to accept
2160 NULL. Remove the non-null checks from callers. Save much code.
2163 *) Add secure heap for storage of private keys (when possible).
2164 Add BIO_s_secmem(), CBIGNUM, etc.
2165 Contributed by Akamai Technologies under our Corporate CLA.
2168 *) Experimental support for a new, fast, unbiased prime candidate generator,
2169 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
2170 [Felix Laurie von Massenbach <felix@erbridge.co.uk>]
2172 *) New output format NSS in the sess_id command line tool. This allows
2173 exporting the session id and the master key in NSS keylog format.
2174 [Martin Kaiser <martin@kaiser.cx>]
2176 *) Harmonize version and its documentation. -f flag is used to display
2178 [mancha <mancha1@zoho.com>]
2180 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
2181 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
2182 [mancha <mancha1@zoho.com>]
2184 *) Fix some double frees. These are not thought to be exploitable.
2185 [mancha <mancha1@zoho.com>]
2187 *) A missing bounds check in the handling of the TLS heartbeat extension
2188 can be used to reveal up to 64k of memory to a connected client or
2191 Thanks for Neel Mehta of Google Security for discovering this bug and to
2192 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
2193 preparing the fix (CVE-2014-0160)
2194 [Adam Langley, Bodo Moeller]
2196 *) Fix for the attack described in the paper "Recovering OpenSSL
2197 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
2198 by Yuval Yarom and Naomi Benger. Details can be obtained from:
2199 http://eprint.iacr.org/2014/140
2201 Thanks to Yuval Yarom and Naomi Benger for discovering this
2202 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
2203 [Yuval Yarom and Naomi Benger]
2205 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
2206 this fixes a limitation in previous versions of OpenSSL.
2209 *) Experimental encrypt-then-mac support.
2211 Experimental support for encrypt then mac from
2212 draft-gutmann-tls-encrypt-then-mac-02.txt
2214 To enable it set the appropriate extension number (0x42 for the test
2215 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
2217 For non-compliant peers (i.e. just about everything) this should have no
2220 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
2224 *) Add EVP support for key wrapping algorithms, to avoid problems with
2225 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
2226 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
2227 algorithms and include tests cases.
2230 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
2234 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
2235 MGF1 digest and OAEP label.
2238 *) Make openssl verify return errors.
2239 [Chris Palmer <palmer@google.com> and Ben Laurie]
2241 *) New function ASN1_TIME_diff to calculate the difference between two
2242 ASN1_TIME structures or one structure and the current time.
2245 *) Update fips_test_suite to support multiple command line options. New
2246 test to induce all self test errors in sequence and check expected
2250 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
2251 sign or verify all in one operation.
2254 *) Add fips_algvs: a multicall fips utility incorporating all the algorithm
2255 test programs and fips_test_suite. Includes functionality to parse
2256 the minimal script output of fipsalgest.pl directly.
2259 *) Add authorisation parameter to FIPS_module_mode_set().
2262 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
2265 *) Use separate DRBG fields for internal and external flags. New function
2266 FIPS_drbg_health_check() to perform on demand health checking. Add
2267 generation tests to fips_test_suite with reduced health check interval to
2268 demonstrate periodic health checking. Add "nodh" option to
2269 fips_test_suite to skip very slow DH test.
2272 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
2276 *) More extensive health check for DRBG checking many more failure modes.
2277 New function FIPS_selftest_drbg_all() to handle every possible DRBG
2278 combination: call this in fips_test_suite.
2281 *) Add support for canonical generation of DSA parameter 'g'. See
2284 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
2285 POST to handle HMAC cases.
2288 *) Add functions FIPS_module_version() and FIPS_module_version_text()
2289 to return numerical and string versions of the FIPS module number.
2292 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
2293 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
2294 outside the validated module in the FIPS capable OpenSSL.
2297 *) Minor change to DRBG entropy callback semantics. In some cases
2298 there is no multiple of the block length between min_len and
2299 max_len. Allow the callback to return more than max_len bytes
2300 of entropy but discard any extra: it is the callback's responsibility
2301 to ensure that the extra data discarded does not impact the
2302 requested amount of entropy.
2305 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
2306 information in FIPS186-3, SP800-57 and SP800-131A.
2309 *) CCM support via EVP. Interface is very similar to GCM case except we
2310 must supply all data in one chunk (i.e. no update, final) and the
2311 message length must be supplied if AAD is used. Add algorithm test
2315 *) Initial version of POST overhaul. Add POST callback to allow the status
2316 of POST to be monitored and/or failures induced. Modify fips_test_suite
2317 to use callback. Always run all selftests even if one fails.
2320 *) XTS support including algorithm test driver in the fips_gcmtest program.
2321 Note: this does increase the maximum key length from 32 to 64 bytes but
2322 there should be no binary compatibility issues as existing applications
2323 will never use XTS mode.
2326 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
2327 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
2328 performs algorithm blocking for unapproved PRNG types. Also do not
2329 set PRNG type in FIPS_mode_set(): leave this to the application.
2330 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
2331 the standard OpenSSL PRNG: set additional data to a date time vector.
2334 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
2335 This shouldn't present any incompatibility problems because applications
2336 shouldn't be using these directly and any that are will need to rethink
2337 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
2340 *) Extensive self tests and health checking required by SP800-90 DRBG.
2341 Remove strength parameter from FIPS_drbg_instantiate and always
2342 instantiate at maximum supported strength.
2345 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
2348 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
2351 *) New function DH_compute_key_padded() to compute a DH key and pad with
2352 leading zeroes if needed: this complies with SP800-56A et al.
2355 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
2356 anything, incomplete, subject to change and largely untested at present.
2359 *) Modify fipscanisteronly build option to only build the necessary object
2360 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
2363 *) Add experimental option FIPSSYMS to give all symbols in
2364 fipscanister.o and FIPS or fips prefix. This will avoid
2365 conflicts with future versions of OpenSSL. Add perl script
2366 util/fipsas.pl to preprocess assembly language source files
2367 and rename any affected symbols.
2370 *) Add selftest checks and algorithm block of non-fips algorithms in
2371 FIPS mode. Remove DES2 from selftests.
2374 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
2375 return internal method without any ENGINE dependencies. Add new
2376 tiny fips sign and verify functions.
2379 *) New build option no-ec2m to disable characteristic 2 code.
2382 *) New build option "fipscanisteronly". This only builds fipscanister.o
2383 and (currently) associated fips utilities. Uses the file Makefile.fips
2384 instead of Makefile.org as the prototype.
2387 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
2388 Update fips_gcmtest to use IV generator.
2391 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
2392 setting output buffer to NULL. The *Final function must be
2393 called although it will not retrieve any additional data. The tag
2394 can be set or retrieved with a ctrl. The IV length is by default 12
2395 bytes (96 bits) but can be set to an alternative value. If the IV
2396 length exceeds the maximum IV length (currently 16 bytes) it cannot be
2400 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
2401 underlying do_cipher function handles all cipher semantics itself
2402 including padding and finalisation. This is useful if (for example)
2403 an ENGINE cipher handles block padding itself. The behaviour of
2404 do_cipher is subtly changed if this flag is set: the return value
2405 is the number of characters written to the output buffer (zero is
2406 no longer an error code) or a negative error code. Also if the
2407 input buffer is NULL and length 0 finalisation should be performed.
2410 *) If a candidate issuer certificate is already part of the constructed
2411 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
2414 *) Improve forward-security support: add functions
2416 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
2417 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
2419 for use by SSL/TLS servers; the callback function will be called whenever a
2420 new session is created, and gets to decide whether the session may be
2421 cached to make it resumable (return 0) or not (return 1). (As by the
2422 SSL/TLS protocol specifications, the session_id sent by the server will be
2423 empty to indicate that the session is not resumable; also, the server will
2424 not generate RFC 4507 (RFC 5077) session tickets.)
2426 A simple reasonable callback implementation is to return is_forward_secure.
2427 This parameter will be set to 1 or 0 depending on the ciphersuite selected
2428 by the SSL/TLS server library, indicating whether it can provide forward
2430 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
2432 *) New -verify_name option in command line utilities to set verification
2436 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
2437 Add CMAC pkey methods.
2440 *) Experimental renegotiation in s_server -www mode. If the client
2441 browses /reneg connection is renegotiated. If /renegcert it is
2442 renegotiated requesting a certificate.
2445 *) Add an "external" session cache for debugging purposes to s_server. This
2446 should help trace issues which normally are only apparent in deployed
2447 multi-process servers.
2450 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
2451 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
2452 BIO_set_cipher() and some obscure PEM functions were changed so they
2453 can now return an error. The RAND changes required a change to the
2454 RAND_METHOD structure.
2457 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
2458 a gcc attribute to warn if the result of a function is ignored. This
2459 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
2460 whose return value is often ignored.
2463 *) New -noct, -requestct, -requirect and -ctlogfile options for s_client.
2464 These allow SCTs (signed certificate timestamps) to be requested and
2465 validated when establishing a connection.
2466 [Rob Percival <robpercival@google.com>]
2468 Changes between 1.0.2g and 1.0.2h [3 May 2016]
2470 *) Prevent padding oracle in AES-NI CBC MAC check
2472 A MITM attacker can use a padding oracle attack to decrypt traffic
2473 when the connection uses an AES CBC cipher and the server support
2476 This issue was introduced as part of the fix for Lucky 13 padding
2477 attack (CVE-2013-0169). The padding check was rewritten to be in
2478 constant time by making sure that always the same bytes are read and
2479 compared against either the MAC or padding bytes. But it no longer
2480 checked that there was enough data to have both the MAC and padding
2483 This issue was reported by Juraj Somorovsky using TLS-Attacker.
2487 *) Fix EVP_EncodeUpdate overflow
2489 An overflow can occur in the EVP_EncodeUpdate() function which is used for
2490 Base64 encoding of binary data. If an attacker is able to supply very large
2491 amounts of input data then a length check can overflow resulting in a heap
2494 Internally to OpenSSL the EVP_EncodeUpdate() function is primarily used by
2495 the PEM_write_bio* family of functions. These are mainly used within the
2496 OpenSSL command line applications, so any application which processes data
2497 from an untrusted source and outputs it as a PEM file should be considered
2498 vulnerable to this issue. User applications that call these APIs directly
2499 with large amounts of untrusted data may also be vulnerable.
2501 This issue was reported by Guido Vranken.
2505 *) Fix EVP_EncryptUpdate overflow
2507 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker
2508 is able to supply very large amounts of input data after a previous call to
2509 EVP_EncryptUpdate() with a partial block then a length check can overflow
2510 resulting in a heap corruption. Following an analysis of all OpenSSL
2511 internal usage of the EVP_EncryptUpdate() function all usage is one of two
2512 forms. The first form is where the EVP_EncryptUpdate() call is known to be
2513 the first called function after an EVP_EncryptInit(), and therefore that
2514 specific call must be safe. The second form is where the length passed to
2515 EVP_EncryptUpdate() can be seen from the code to be some small value and
2516 therefore there is no possibility of an overflow. Since all instances are
2517 one of these two forms, it is believed that there can be no overflows in
2518 internal code due to this problem. It should be noted that
2519 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths.
2520 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances
2521 of these calls have also been analysed too and it is believed there are no
2522 instances in internal usage where an overflow could occur.
2524 This issue was reported by Guido Vranken.
2528 *) Prevent ASN.1 BIO excessive memory allocation
2530 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio()
2531 a short invalid encoding can cause allocation of large amounts of memory
2532 potentially consuming excessive resources or exhausting memory.
2534 Any application parsing untrusted data through d2i BIO functions is
2535 affected. The memory based functions such as d2i_X509() are *not* affected.
2536 Since the memory based functions are used by the TLS library, TLS
2537 applications are not affected.
2539 This issue was reported by Brian Carpenter.
2545 ASN1 Strings that are over 1024 bytes can cause an overread in applications
2546 using the X509_NAME_oneline() function on EBCDIC systems. This could result
2547 in arbitrary stack data being returned in the buffer.
2549 This issue was reported by Guido Vranken.
2553 *) Modify behavior of ALPN to invoke callback after SNI/servername
2554 callback, such that updates to the SSL_CTX affect ALPN.
2557 *) Remove LOW from the DEFAULT cipher list. This removes singles DES from the
2561 *) Only remove the SSLv2 methods with the no-ssl2-method option. When the
2562 methods are enabled and ssl2 is disabled the methods return NULL.
2565 Changes between 1.0.2f and 1.0.2g [1 Mar 2016]
2567 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
2568 Builds that are not configured with "enable-weak-ssl-ciphers" will not
2569 provide any "EXPORT" or "LOW" strength ciphers.
2572 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2
2573 is by default disabled at build-time. Builds that are not configured with
2574 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used,
2575 users who want to negotiate SSLv2 via the version-flexible SSLv23_method()
2576 will need to explicitly call either of:
2578 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
2580 SSL_clear_options(ssl, SSL_OP_NO_SSLv2);
2582 as appropriate. Even if either of those is used, or the application
2583 explicitly uses the version-specific SSLv2_method() or its client and
2584 server variants, SSLv2 ciphers vulnerable to exhaustive search key
2585 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT
2586 ciphers, and SSLv2 56-bit DES are no longer available.
2590 *) Fix a double-free in DSA code
2592 A double free bug was discovered when OpenSSL parses malformed DSA private
2593 keys and could lead to a DoS attack or memory corruption for applications
2594 that receive DSA private keys from untrusted sources. This scenario is
2597 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using
2602 *) Disable SRP fake user seed to address a server memory leak.
2604 Add a new method SRP_VBASE_get1_by_user that handles the seed properly.
2606 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
2607 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user
2608 was changed to ignore the "fake user" SRP seed, even if the seed
2611 Users should use SRP_VBASE_get1_by_user instead. Note that in
2612 SRP_VBASE_get1_by_user, caller must free the returned value. Note
2613 also that even though configuring the SRP seed attempts to hide
2614 invalid usernames by continuing the handshake with fake
2615 credentials, this behaviour is not constant time and no strong
2616 guarantees are made that the handshake is indistinguishable from
2617 that of a valid user.
2621 *) Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
2623 In the BN_hex2bn function the number of hex digits is calculated using an
2624 int value |i|. Later |bn_expand| is called with a value of |i * 4|. For
2625 large values of |i| this can result in |bn_expand| not allocating any
2626 memory because |i * 4| is negative. This can leave the internal BIGNUM data
2627 field as NULL leading to a subsequent NULL ptr deref. For very large values
2628 of |i|, the calculation |i * 4| could be a positive value smaller than |i|.
2629 In this case memory is allocated to the internal BIGNUM data field, but it
2630 is insufficiently sized leading to heap corruption. A similar issue exists
2631 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn
2632 is ever called by user applications with very large untrusted hex/dec data.
2633 This is anticipated to be a rare occurrence.
2635 All OpenSSL internal usage of these functions use data that is not expected
2636 to be untrusted, e.g. config file data or application command line
2637 arguments. If user developed applications generate config file data based
2638 on untrusted data then it is possible that this could also lead to security
2639 consequences. This is also anticipated to be rare.
2641 This issue was reported to OpenSSL by Guido Vranken.
2645 *) Fix memory issues in BIO_*printf functions
2647 The internal |fmtstr| function used in processing a "%s" format string in
2648 the BIO_*printf functions could overflow while calculating the length of a
2649 string and cause an OOB read when printing very long strings.
2651 Additionally the internal |doapr_outch| function can attempt to write to an
2652 OOB memory location (at an offset from the NULL pointer) in the event of a
2653 memory allocation failure. In 1.0.2 and below this could be caused where
2654 the size of a buffer to be allocated is greater than INT_MAX. E.g. this
2655 could be in processing a very long "%s" format string. Memory leaks can
2658 The first issue may mask the second issue dependent on compiler behaviour.
2659 These problems could enable attacks where large amounts of untrusted data
2660 is passed to the BIO_*printf functions. If applications use these functions
2661 in this way then they could be vulnerable. OpenSSL itself uses these
2662 functions when printing out human-readable dumps of ASN.1 data. Therefore
2663 applications that print this data could be vulnerable if the data is from
2664 untrusted sources. OpenSSL command line applications could also be
2665 vulnerable where they print out ASN.1 data, or if untrusted data is passed
2666 as command line arguments.
2668 Libssl is not considered directly vulnerable. Additionally certificates etc
2669 received via remote connections via libssl are also unlikely to be able to
2670 trigger these issues because of message size limits enforced within libssl.
2672 This issue was reported to OpenSSL Guido Vranken.
2676 *) Side channel attack on modular exponentiation
2678 A side-channel attack was found which makes use of cache-bank conflicts on
2679 the Intel Sandy-Bridge microarchitecture which could lead to the recovery
2680 of RSA keys. The ability to exploit this issue is limited as it relies on
2681 an attacker who has control of code in a thread running on the same
2682 hyper-threaded core as the victim thread which is performing decryptions.
2684 This issue was reported to OpenSSL by Yuval Yarom, The University of
2685 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and
2686 Nadia Heninger, University of Pennsylvania with more information at
2687 http://cachebleed.info.
2691 *) Change the req app to generate a 2048-bit RSA/DSA key by default,
2692 if no keysize is specified with default_bits. This fixes an
2693 omission in an earlier change that changed all RSA/DSA key generation
2694 apps to use 2048 bits by default.
2697 Changes between 1.0.2e and 1.0.2f [28 Jan 2016]
2698 *) DH small subgroups
2700 Historically OpenSSL only ever generated DH parameters based on "safe"
2701 primes. More recently (in version 1.0.2) support was provided for
2702 generating X9.42 style parameter files such as those required for RFC 5114
2703 support. The primes used in such files may not be "safe". Where an
2704 application is using DH configured with parameters based on primes that are
2705 not "safe" then an attacker could use this fact to find a peer's private
2706 DH exponent. This attack requires that the attacker complete multiple
2707 handshakes in which the peer uses the same private DH exponent. For example
2708 this could be used to discover a TLS server's private DH exponent if it's
2709 reusing the private DH exponent or it's using a static DH ciphersuite.
2711 OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in
2712 TLS. It is not on by default. If the option is not set then the server
2713 reuses the same private DH exponent for the life of the server process and
2714 would be vulnerable to this attack. It is believed that many popular
2715 applications do set this option and would therefore not be at risk.
2717 The fix for this issue adds an additional check where a "q" parameter is
2718 available (as is the case in X9.42 based parameters). This detects the
2719 only known attack, and is the only possible defense for static DH
2720 ciphersuites. This could have some performance impact.
2722 Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by
2723 default and cannot be disabled. This could have some performance impact.
2725 This issue was reported to OpenSSL by Antonio Sanso (Adobe).
2729 *) SSLv2 doesn't block disabled ciphers
2731 A malicious client can negotiate SSLv2 ciphers that have been disabled on
2732 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have
2733 been disabled, provided that the SSLv2 protocol was not also disabled via
2736 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram
2737 and Sebastian Schinzel.
2741 Changes between 1.0.2d and 1.0.2e [3 Dec 2015]
2743 *) BN_mod_exp may produce incorrect results on x86_64
2745 There is a carry propagating bug in the x86_64 Montgomery squaring
2746 procedure. No EC algorithms are affected. Analysis suggests that attacks
2747 against RSA and DSA as a result of this defect would be very difficult to
2748 perform and are not believed likely. Attacks against DH are considered just
2749 feasible (although very difficult) because most of the work necessary to
2750 deduce information about a private key may be performed offline. The amount
2751 of resources required for such an attack would be very significant and
2752 likely only accessible to a limited number of attackers. An attacker would
2753 additionally need online access to an unpatched system using the target
2754 private key in a scenario with persistent DH parameters and a private
2755 key that is shared between multiple clients. For example this can occur by
2756 default in OpenSSL DHE based SSL/TLS ciphersuites.
2758 This issue was reported to OpenSSL by Hanno Böck.
2762 *) Certificate verify crash with missing PSS parameter
2764 The signature verification routines will crash with a NULL pointer
2765 dereference if presented with an ASN.1 signature using the RSA PSS
2766 algorithm and absent mask generation function parameter. Since these
2767 routines are used to verify certificate signature algorithms this can be
2768 used to crash any certificate verification operation and exploited in a
2769 DoS attack. Any application which performs certificate verification is
2770 vulnerable including OpenSSL clients and servers which enable client
2773 This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
2777 *) X509_ATTRIBUTE memory leak
2779 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
2780 memory. This structure is used by the PKCS#7 and CMS routines so any
2781 application which reads PKCS#7 or CMS data from untrusted sources is
2782 affected. SSL/TLS is not affected.
2784 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
2789 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
2790 This changes the decoding behaviour for some invalid messages,
2791 though the change is mostly in the more lenient direction, and
2792 legacy behaviour is preserved as much as possible.
2795 *) In DSA_generate_parameters_ex, if the provided seed is too short,
2797 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
2799 Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
2801 *) Alternate chains certificate forgery
2803 During certificate verification, OpenSSL will attempt to find an
2804 alternative certificate chain if the first attempt to build such a chain
2805 fails. An error in the implementation of this logic can mean that an
2806 attacker could cause certain checks on untrusted certificates to be
2807 bypassed, such as the CA flag, enabling them to use a valid leaf
2808 certificate to act as a CA and "issue" an invalid certificate.
2810 This issue was reported to OpenSSL by Adam Langley/David Benjamin
2814 Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
2816 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI
2817 incompatibility in the handling of HMAC. The previous ABI has now been
2821 Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
2823 *) Malformed ECParameters causes infinite loop
2825 When processing an ECParameters structure OpenSSL enters an infinite loop
2826 if the curve specified is over a specially malformed binary polynomial
2829 This can be used to perform denial of service against any
2830 system which processes public keys, certificate requests or
2831 certificates. This includes TLS clients and TLS servers with
2832 client authentication enabled.
2834 This issue was reported to OpenSSL by Joseph Barr-Pixton.
2838 *) Exploitable out-of-bounds read in X509_cmp_time
2840 X509_cmp_time does not properly check the length of the ASN1_TIME
2841 string and can read a few bytes out of bounds. In addition,
2842 X509_cmp_time accepts an arbitrary number of fractional seconds in the
2845 An attacker can use this to craft malformed certificates and CRLs of
2846 various sizes and potentially cause a segmentation fault, resulting in
2847 a DoS on applications that verify certificates or CRLs. TLS clients
2848 that verify CRLs are affected. TLS clients and servers with client
2849 authentication enabled may be affected if they use custom verification
2852 This issue was reported to OpenSSL by Robert Swiecki (Google), and
2853 independently by Hanno Böck.
2857 *) PKCS7 crash with missing EnvelopedContent
2859 The PKCS#7 parsing code does not handle missing inner EncryptedContent
2860 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
2861 with missing content and trigger a NULL pointer dereference on parsing.
2863 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
2864 structures from untrusted sources are affected. OpenSSL clients and
2865 servers are not affected.
2867 This issue was reported to OpenSSL by Michal Zalewski (Google).
2871 *) CMS verify infinite loop with unknown hash function
2873 When verifying a signedData message the CMS code can enter an infinite loop
2874 if presented with an unknown hash function OID. This can be used to perform
2875 denial of service against any system which verifies signedData messages using
2877 This issue was reported to OpenSSL by Johannes Bauer.
2881 *) Race condition handling NewSessionTicket
2883 If a NewSessionTicket is received by a multi-threaded client when attempting to
2884 reuse a previous ticket then a race condition can occur potentially leading to
2885 a double free of the ticket data.
2889 *) Only support 256-bit or stronger elliptic curves with the
2890 'ecdh_auto' setting (server) or by default (client). Of supported
2891 curves, prefer P-256 (both).
2894 Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
2896 *) ClientHello sigalgs DoS fix
2898 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
2899 invalid signature algorithms extension a NULL pointer dereference will
2900 occur. This can be exploited in a DoS attack against the server.
2902 This issue was was reported to OpenSSL by David Ramos of Stanford
2905 [Stephen Henson and Matt Caswell]
2907 *) Multiblock corrupted pointer fix
2909 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
2910 feature only applies on 64 bit x86 architecture platforms that support AES
2911 NI instructions. A defect in the implementation of "multiblock" can cause
2912 OpenSSL's internal write buffer to become incorrectly set to NULL when
2913 using non-blocking IO. Typically, when the user application is using a
2914 socket BIO for writing, this will only result in a failed connection.
2915 However if some other BIO is used then it is likely that a segmentation
2916 fault will be triggered, thus enabling a potential DoS attack.
2918 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
2922 *) Segmentation fault in DTLSv1_listen fix
2924 The DTLSv1_listen function is intended to be stateless and processes the
2925 initial ClientHello from many peers. It is common for user code to loop
2926 over the call to DTLSv1_listen until a valid ClientHello is received with
2927 an associated cookie. A defect in the implementation of DTLSv1_listen means
2928 that state is preserved in the SSL object from one invocation to the next
2929 that can lead to a segmentation fault. Errors processing the initial
2930 ClientHello can trigger this scenario. An example of such an error could be
2931 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
2934 This issue was reported to OpenSSL by Per Allansson.
2938 *) Segmentation fault in ASN1_TYPE_cmp fix
2940 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
2941 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
2942 certificate signature algorithm consistency this can be used to crash any
2943 certificate verification operation and exploited in a DoS attack. Any
2944 application which performs certificate verification is vulnerable including
2945 OpenSSL clients and servers which enable client authentication.
2949 *) Segmentation fault for invalid PSS parameters fix
2951 The signature verification routines will crash with a NULL pointer
2952 dereference if presented with an ASN.1 signature using the RSA PSS
2953 algorithm and invalid parameters. Since these routines are used to verify
2954 certificate signature algorithms this can be used to crash any
2955 certificate verification operation and exploited in a DoS attack. Any
2956 application which performs certificate verification is vulnerable including
2957 OpenSSL clients and servers which enable client authentication.
2959 This issue was was reported to OpenSSL by Brian Carpenter.
2963 *) ASN.1 structure reuse memory corruption fix
2965 Reusing a structure in ASN.1 parsing may allow an attacker to cause
2966 memory corruption via an invalid write. Such reuse is and has been
2967 strongly discouraged and is believed to be rare.
2969 Applications that parse structures containing CHOICE or ANY DEFINED BY
2970 components may be affected. Certificate parsing (d2i_X509 and related
2971 functions) are however not affected. OpenSSL clients and servers are
2976 *) PKCS7 NULL pointer dereferences fix
2978 The PKCS#7 parsing code does not handle missing outer ContentInfo
2979 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
2980 missing content and trigger a NULL pointer dereference on parsing.
2982 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
2983 otherwise parse PKCS#7 structures from untrusted sources are
2984 affected. OpenSSL clients and servers are not affected.
2986 This issue was reported to OpenSSL by Michal Zalewski (Google).
2990 *) DoS via reachable assert in SSLv2 servers fix
2992 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
2993 servers that both support SSLv2 and enable export cipher suites by sending
2994 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
2996 This issue was discovered by Sean Burford (Google) and Emilia Käsper
2997 (OpenSSL development team).
3001 *) Empty CKE with client auth and DHE fix
3003 If client auth is used then a server can seg fault in the event of a DHE
3004 ciphersuite being selected and a zero length ClientKeyExchange message
3005 being sent by the client. This could be exploited in a DoS attack.
3009 *) Handshake with unseeded PRNG fix
3011 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
3012 with an unseeded PRNG. The conditions are:
3013 - The client is on a platform where the PRNG has not been seeded
3014 automatically, and the user has not seeded manually
3015 - A protocol specific client method version has been used (i.e. not
3016 SSL_client_methodv23)
3017 - A ciphersuite is used that does not require additional random data from
3018 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
3020 If the handshake succeeds then the client random that has been used will
3021 have been generated from a PRNG with insufficient entropy and therefore the
3022 output may be predictable.
3024 For example using the following command with an unseeded openssl will
3025 succeed on an unpatched platform:
3027 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
3031 *) Use After Free following d2i_ECPrivatekey error fix
3033 A malformed EC private key file consumed via the d2i_ECPrivateKey function
3034 could cause a use after free condition. This, in turn, could cause a double
3035 free in several private key parsing functions (such as d2i_PrivateKey
3036 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
3037 for applications that receive EC private keys from untrusted
3038 sources. This scenario is considered rare.
3040 This issue was discovered by the BoringSSL project and fixed in their
3045 *) X509_to_X509_REQ NULL pointer deref fix
3047 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
3048 the certificate key is invalid. This function is rarely used in practice.
3050 This issue was discovered by Brian Carpenter.
3054 *) Removed the export ciphers from the DEFAULT ciphers
3057 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
3059 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
3060 ARMv5 through ARMv8, as opposite to "locking" it to single one.
3061 So far those who have to target multiple platforms would compromise
3062 and argue that binary targeting say ARMv5 would still execute on
3063 ARMv8. "Universal" build resolves this compromise by providing
3064 near-optimal performance even on newer platforms.
3067 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
3068 (other platforms pending).
3069 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
3071 *) Add support for the SignedCertificateTimestampList certificate and
3072 OCSP response extensions from RFC6962.
3075 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
3076 for corner cases. (Certain input points at infinity could lead to
3077 bogus results, with non-infinity inputs mapped to infinity too.)
3080 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
3081 This covers AES, SHA256/512 and GHASH. "Initial" means that most
3082 common cases are optimized and there still is room for further
3083 improvements. Vector Permutation AES for Altivec is also added.
3086 *) Add support for little-endian ppc64 Linux target.
3087 [Marcelo Cerri (IBM)]
3089 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
3090 SHA1, SHA256 and GHASH. "Initial" means that most common cases
3091 are optimized and there still is room for further improvements.
3092 Both 32- and 64-bit modes are supported.
3093 [Andy Polyakov, Ard Biesheuvel (Linaro)]
3095 *) Improved ARMv7 NEON support.
3098 *) Support for SPARC Architecture 2011 crypto extensions, first
3099 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
3100 SHA256/512, MD5, GHASH and modular exponentiation.
3101 [Andy Polyakov, David Miller]
3103 *) Accelerated modular exponentiation for Intel processors, a.k.a.
3105 [Shay Gueron & Vlad Krasnov (Intel Corp)]
3107 *) Support for new and upcoming Intel processors, including AVX2,
3108 BMI and SHA ISA extensions. This includes additional "stitched"
3109 implementations, AESNI-SHA256 and GCM, and multi-buffer support
3112 This work was sponsored by Intel Corp.
3115 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
3116 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
3117 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
3120 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
3121 this fixes a limitation in previous versions of OpenSSL.
3124 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
3125 MGF1 digest and OAEP label.
3128 *) Add EVP support for key wrapping algorithms, to avoid problems with
3129 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
3130 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
3131 algorithms and include tests cases.
3134 *) Add functions to allocate and set the fields of an ECDSA_METHOD
3136 [Douglas E. Engert, Steve Henson]
3138 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
3139 difference in days and seconds between two tm or ASN1_TIME structures.
3142 *) Add -rev test option to s_server to just reverse order of characters
3143 received by client and send back to server. Also prints an abbreviated
3144 summary of the connection parameters.
3147 *) New option -brief for s_client and s_server to print out a brief summary
3148 of connection parameters.
3151 *) Add callbacks for arbitrary TLS extensions.
3152 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
3154 *) New option -crl_download in several openssl utilities to download CRLs
3155 from CRLDP extension in certificates.
3158 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
3161 *) New function X509_CRL_diff to generate a delta CRL from the difference
3162 of two full CRLs. Add support to "crl" utility.
3165 *) New functions to set lookup_crls function and to retrieve
3166 X509_STORE from X509_STORE_CTX.
3169 *) Print out deprecated issuer and subject unique ID fields in
3173 *) Extend OCSP I/O functions so they can be used for simple general purpose
3174 HTTP as well as OCSP. New wrapper function which can be used to download
3175 CRLs using the OCSP API.
3178 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
3181 *) SSL_CONF* functions. These provide a common framework for application
3182 configuration using configuration files or command lines.
3185 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
3186 message callback and prints the results. Needs compile time option
3187 "enable-ssl-trace". New options to s_client and s_server to enable
3191 *) New ctrl and macro to retrieve supported points extensions.
3192 Print out extension in s_server and s_client.
3195 *) New functions to retrieve certificate signature and signature
3199 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
3203 *) New Suite B modes for TLS code. These use and enforce the requirements
3204 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
3205 only use Suite B curves. The Suite B modes can be set by using the
3206 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
3209 *) New chain verification flags for Suite B levels of security. Check
3210 algorithms are acceptable when flags are set in X509_verify_cert.
3213 *) Make tls1_check_chain return a set of flags indicating checks passed
3214 by a certificate chain. Add additional tests to handle client
3215 certificates: checks for matching certificate type and issuer name
3219 *) If an attempt is made to use a signature algorithm not in the peer
3220 preference list abort the handshake. If client has no suitable
3221 signature algorithms in response to a certificate request do not
3222 use the certificate.
3225 *) If server EC tmp key is not in client preference list abort handshake.
3228 *) Add support for certificate stores in CERT structure. This makes it
3229 possible to have different stores per SSL structure or one store in
3230 the parent SSL_CTX. Include distinct stores for certificate chain
3231 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
3232 to build and store a certificate chain in CERT structure: returning
3233 an error if the chain cannot be built: this will allow applications
3234 to test if a chain is correctly configured.
3236 Note: if the CERT based stores are not set then the parent SSL_CTX
3237 store is used to retain compatibility with existing behaviour.
3241 *) New function ssl_set_client_disabled to set a ciphersuite disabled
3242 mask based on the current session, check mask when sending client
3243 hello and checking the requested ciphersuite.
3246 *) New ctrls to retrieve and set certificate types in a certificate
3247 request message. Print out received values in s_client. If certificate
3248 types is not set with custom values set sensible values based on
3249 supported signature algorithms.
3252 *) Support for distinct client and server supported signature algorithms.
3255 *) Add certificate callback. If set this is called whenever a certificate
3256 is required by client or server. An application can decide which
3257 certificate chain to present based on arbitrary criteria: for example
3258 supported signature algorithms. Add very simple example to s_server.
3259 This fixes many of the problems and restrictions of the existing client
3260 certificate callback: for example you can now clear an existing
3261 certificate and specify the whole chain.
3264 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
3265 the certificate can be used for (if anything). Set valid_flags field
3266 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
3267 to have similar checks in it.
3269 Add new "cert_flags" field to CERT structure and include a "strict mode".
3270 This enforces some TLS certificate requirements (such as only permitting
3271 certificate signature algorithms contained in the supported algorithms
3272 extension) which some implementations ignore: this option should be used
3273 with caution as it could cause interoperability issues.
3276 *) Update and tidy signature algorithm extension processing. Work out
3277 shared signature algorithms based on preferences and peer algorithms
3278 and print them out in s_client and s_server. Abort handshake if no
3279 shared signature algorithms.
3282 *) Add new functions to allow customised supported signature algorithms
3283 for SSL and SSL_CTX structures. Add options to s_client and s_server
3287 *) New function SSL_certs_clear() to delete all references to certificates
3288 from an SSL structure. Before this once a certificate had been added
3289 it couldn't be removed.
3292 *) Integrate hostname, email address and IP address checking with certificate
3293 verification. New verify options supporting checking in openssl utility.
3296 *) Fixes and wildcard matching support to hostname and email checking
3297 functions. Add manual page.
3298 [Florian Weimer (Red Hat Product Security Team)]
3300 *) New functions to check a hostname email or IP address against a
3301 certificate. Add options x509 utility to print results of checks against
3305 *) Fix OCSP checking.
3306 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
3308 *) Initial experimental support for explicitly trusted non-root CAs.
3309 OpenSSL still tries to build a complete chain to a root but if an
3310 intermediate CA has a trust setting included that is used. The first
3311 setting is used: whether to trust (e.g., -addtrust option to the x509
3315 *) Add -trusted_first option which attempts to find certificates in the
3316 trusted store even if an untrusted chain is also supplied.
3319 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
3320 platform support for Linux and Android.
3323 *) Support for linux-x32, ILP32 environment in x86_64 framework.
3326 *) Experimental multi-implementation support for FIPS capable OpenSSL.
3327 When in FIPS mode the approved implementations are used as normal,
3328 when not in FIPS mode the internal unapproved versions are used instead.
3329 This means that the FIPS capable OpenSSL isn't forced to use the
3330 (often lower performance) FIPS implementations outside FIPS mode.
3333 *) Transparently support X9.42 DH parameters when calling
3334 PEM_read_bio_DHparameters. This means existing applications can handle
3335 the new parameter format automatically.
3338 *) Initial experimental support for X9.42 DH parameter format: mainly
3339 to support use of 'q' parameter for RFC5114 parameters.
3342 *) Add DH parameters from RFC5114 including test data to dhtest.
3345 *) Support for automatic EC temporary key parameter selection. If enabled
3346 the most preferred EC parameters are automatically used instead of
3347 hardcoded fixed parameters. Now a server just has to call:
3348 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
3349 support ECDH and use the most appropriate parameters.
3352 *) Enhance and tidy EC curve and point format TLS extension code. Use
3353 static structures instead of allocation if default values are used.
3354 New ctrls to set curves we wish to support and to retrieve shared curves.
3355 Print out shared curves in s_server. New options to s_server and s_client
3356 to set list of supported curves.
3359 *) New ctrls to retrieve supported signature algorithms and
3360 supported curve values as an array of NIDs. Extend openssl utility
3361 to print out received values.
3364 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
3365 between NIDs and the more common NIST names such as "P-256". Enhance
3366 ecparam utility and ECC method to recognise the NIST names for curves.
3369 *) Enhance SSL/TLS certificate chain handling to support different
3370 chains for each certificate instead of one chain in the parent SSL_CTX.
3373 *) Support for fixed DH ciphersuite client authentication: where both
3374 server and client use DH certificates with common parameters.
3377 *) Support for fixed DH ciphersuites: those requiring DH server
3381 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
3383 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
3384 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
3385 X509_CINF_get_signature were reverted post internal team review.
3387 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
3389 *) Build fixes for the Windows and OpenVMS platforms
3390 [Matt Caswell and Richard Levitte]
3392 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
3394 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
3395 message can cause a segmentation fault in OpenSSL due to a NULL pointer
3396 dereference. This could lead to a Denial Of Service attack. Thanks to
3397 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
3401 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
3402 dtls1_buffer_record function under certain conditions. In particular this
3403 could occur if an attacker sent repeated DTLS records with the same
3404 sequence number but for the next epoch. The memory leak could be exploited
3405 by an attacker in a Denial of Service attack through memory exhaustion.
3406 Thanks to Chris Mueller for reporting this issue.
3410 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
3411 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
3412 method would be set to NULL which could later result in a NULL pointer
3413 dereference. Thanks to Frank Schmirler for reporting this issue.
3417 *) Abort handshake if server key exchange message is omitted for ephemeral
3420 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
3421 reporting this issue.
3425 *) Remove non-export ephemeral RSA code on client and server. This code
3426 violated the TLS standard by allowing the use of temporary RSA keys in
3427 non-export ciphersuites and could be used by a server to effectively
3428 downgrade the RSA key length used to a value smaller than the server
3429 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
3430 INRIA or reporting this issue.
3434 *) Fixed issue where DH client certificates are accepted without verification.
3435 An OpenSSL server will accept a DH certificate for client authentication
3436 without the certificate verify message. This effectively allows a client to
3437 authenticate without the use of a private key. This only affects servers
3438 which trust a client certificate authority which issues certificates
3439 containing DH keys: these are extremely rare and hardly ever encountered.
3440 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
3445 *) Ensure that the session ID context of an SSL is updated when its
3446 SSL_CTX is updated via SSL_set_SSL_CTX.
3448 The session ID context is typically set from the parent SSL_CTX,
3449 and can vary with the CTX.
3452 *) Fix various certificate fingerprint issues.
3454 By using non-DER or invalid encodings outside the signed portion of a
3455 certificate the fingerprint can be changed without breaking the signature.
3456 Although no details of the signed portion of the certificate can be changed
3457 this can cause problems with some applications: e.g. those using the
3458 certificate fingerprint for blacklists.
3460 1. Reject signatures with non zero unused bits.
3462 If the BIT STRING containing the signature has non zero unused bits reject
3463 the signature. All current signature algorithms require zero unused bits.
3465 2. Check certificate algorithm consistency.
3467 Check the AlgorithmIdentifier inside TBS matches the one in the
3468 certificate signature. NB: this will result in signature failure
3469 errors for some broken certificates.
3471 Thanks to Konrad Kraszewski from Google for reporting this issue.
3473 3. Check DSA/ECDSA signatures use DER.
3475 Re-encode DSA/ECDSA signatures and compare with the original received
3476 signature. Return an error if there is a mismatch.
3478 This will reject various cases including garbage after signature
3479 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
3480 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
3481 (negative or with leading zeroes).
3483 Further analysis was conducted and fixes were developed by Stephen Henson
3484 of the OpenSSL core team.
3489 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
3490 results on some platforms, including x86_64. This bug occurs at random
3491 with a very low probability, and is not known to be exploitable in any
3492 way, though its exact impact is difficult to determine. Thanks to Pieter
3493 Wuille (Blockstream) who reported this issue and also suggested an initial
3494 fix. Further analysis was conducted by the OpenSSL development team and
3495 Adam Langley of Google. The final fix was developed by Andy Polyakov of
3496 the OpenSSL core team.
3500 *) Do not resume sessions on the server if the negotiated protocol
3501 version does not match the session's version. Resuming with a different
3502 version, while not strictly forbidden by the RFC, is of questionable
3503 sanity and breaks all known clients.
3504 [David Benjamin, Emilia Käsper]
3506 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
3507 early CCS messages during renegotiation. (Note that because
3508 renegotiation is encrypted, this early CCS was not exploitable.)
3511 *) Tighten client-side session ticket handling during renegotiation:
3512 ensure that the client only accepts a session ticket if the server sends
3513 the extension anew in the ServerHello. Previously, a TLS client would
3514 reuse the old extension state and thus accept a session ticket if one was
3515 announced in the initial ServerHello.
3517 Similarly, ensure that the client requires a session ticket if one
3518 was advertised in the ServerHello. Previously, a TLS client would
3519 ignore a missing NewSessionTicket message.
3522 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
3524 *) SRTP Memory Leak.
3526 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
3527 sends a carefully crafted handshake message, to cause OpenSSL to fail
3528 to free up to 64k of memory causing a memory leak. This could be
3529 exploited in a Denial Of Service attack. This issue affects OpenSSL
3530 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
3531 whether SRTP is used or configured. Implementations of OpenSSL that
3532 have been compiled with OPENSSL_NO_SRTP defined are not affected.
3534 The fix was developed by the OpenSSL team.
3538 *) Session Ticket Memory Leak.
3540 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
3541 integrity of that ticket is first verified. In the event of a session
3542 ticket integrity check failing, OpenSSL will fail to free memory
3543 causing a memory leak. By sending a large number of invalid session
3544 tickets an attacker could exploit this issue in a Denial Of Service
3549 *) Build option no-ssl3 is incomplete.
3551 When OpenSSL is configured with "no-ssl3" as a build option, servers
3552 could accept and complete a SSL 3.0 handshake, and clients could be
3553 configured to send them.
3555 [Akamai and the OpenSSL team]
3557 *) Add support for TLS_FALLBACK_SCSV.
3558 Client applications doing fallback retries should call
3559 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
3561 [Adam Langley, Bodo Moeller]
3563 *) Add additional DigestInfo checks.
3565 Re-encode DigestInto in DER and check against the original when
3566 verifying RSA signature: this will reject any improperly encoded
3567 DigestInfo structures.
3569 Note: this is a precautionary measure and no attacks are currently known.
3573 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
3575 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
3576 SRP code can be overrun an internal buffer. Add sanity check that
3577 g, A, B < N to SRP code.
3579 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
3580 Group for discovering this issue.
3584 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
3585 TLS 1.0 instead of higher protocol versions when the ClientHello message
3586 is badly fragmented. This allows a man-in-the-middle attacker to force a
3587 downgrade to TLS 1.0 even if both the server and the client support a
3588 higher protocol version, by modifying the client's TLS records.
3590 Thanks to David Benjamin and Adam Langley (Google) for discovering and
3591 researching this issue.
3595 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
3596 to a denial of service attack. A malicious server can crash the client
3597 with a null pointer dereference (read) by specifying an anonymous (EC)DH
3598 ciphersuite and sending carefully crafted handshake messages.
3600 Thanks to Felix Gröbert (Google) for discovering and researching this
3605 *) By sending carefully crafted DTLS packets an attacker could cause openssl
3606 to leak memory. This can be exploited through a Denial of Service attack.
3607 Thanks to Adam Langley for discovering and researching this issue.
3611 *) An attacker can force openssl to consume large amounts of memory whilst
3612 processing DTLS handshake messages. This can be exploited through a
3613 Denial of Service attack.
3614 Thanks to Adam Langley for discovering and researching this issue.
3618 *) An attacker can force an error condition which causes openssl to crash
3619 whilst processing DTLS packets due to memory being freed twice. This
3620 can be exploited through a Denial of Service attack.
3621 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
3626 *) If a multithreaded client connects to a malicious server using a resumed
3627 session and the server sends an ec point format extension it could write
3628 up to 255 bytes to freed memory.
3630 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
3635 *) A malicious server can crash an OpenSSL client with a null pointer
3636 dereference (read) by specifying an SRP ciphersuite even though it was not
3637 properly negotiated with the client. This can be exploited through a
3638 Denial of Service attack.
3640 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
3641 discovering and researching this issue.
3645 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
3646 X509_name_oneline, X509_name_print_ex et al. to leak some information
3647 from the stack. Applications may be affected if they echo pretty printing
3648 output to the attacker.
3650 Thanks to Ivan Fratric (Google) for discovering this issue.
3652 [Emilia Käsper, and Steve Henson]
3654 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
3655 for corner cases. (Certain input points at infinity could lead to
3656 bogus results, with non-infinity inputs mapped to infinity too.)
3659 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
3661 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
3662 handshake can force the use of weak keying material in OpenSSL
3663 SSL/TLS clients and servers.
3665 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
3666 researching this issue. (CVE-2014-0224)
3667 [KIKUCHI Masashi, Steve Henson]
3669 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
3670 OpenSSL DTLS client the code can be made to recurse eventually crashing
3673 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
3675 [Imre Rad, Steve Henson]
3677 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
3678 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
3679 client or server. This is potentially exploitable to run arbitrary
3680 code on a vulnerable client or server.
3682 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
3683 [Jüri Aedla, Steve Henson]
3685 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
3686 are subject to a denial of service attack.
3688 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
3689 this issue. (CVE-2014-3470)
3690 [Felix Gröbert, Ivan Fratric, Steve Henson]
3692 *) Harmonize version and its documentation. -f flag is used to display
3694 [mancha <mancha1@zoho.com>]
3696 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
3697 in i2d_ECPrivateKey.
3698 [mancha <mancha1@zoho.com>]
3700 *) Fix some double frees. These are not thought to be exploitable.
3701 [mancha <mancha1@zoho.com>]
3703 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
3705 *) A missing bounds check in the handling of the TLS heartbeat extension
3706 can be used to reveal up to 64k of memory to a connected client or
3709 Thanks for Neel Mehta of Google Security for discovering this bug and to
3710 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
3711 preparing the fix (CVE-2014-0160)
3712 [Adam Langley, Bodo Moeller]
3714 *) Fix for the attack described in the paper "Recovering OpenSSL
3715 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
3716 by Yuval Yarom and Naomi Benger. Details can be obtained from:
3717 http://eprint.iacr.org/2014/140
3719 Thanks to Yuval Yarom and Naomi Benger for discovering this
3720 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
3721 [Yuval Yarom and Naomi Benger]
3723 *) TLS pad extension: draft-agl-tls-padding-03
3725 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
3726 TLS client Hello record length value would otherwise be > 255 and
3727 less that 512 pad with a dummy extension containing zeroes so it
3728 is at least 512 bytes long.
3730 [Adam Langley, Steve Henson]
3732 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
3734 *) Fix for TLS record tampering bug. A carefully crafted invalid
3735 handshake could crash OpenSSL with a NULL pointer exception.
3736 Thanks to Anton Johansson for reporting this issues.
3739 *) Keep original DTLS digest and encryption contexts in retransmission
3740 structures so we can use the previous session parameters if they need
3741 to be resent. (CVE-2013-6450)
3744 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
3745 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
3746 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
3747 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
3748 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
3749 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
3750 [Rob Stradling, Adam Langley]
3752 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
3754 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
3755 supporting platforms or when small records were transferred.
3756 [Andy Polyakov, Steve Henson]
3758 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
3760 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
3762 This addresses the flaw in CBC record processing discovered by
3763 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
3764 at: http://www.isg.rhul.ac.uk/tls/
3766 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
3767 Security Group at Royal Holloway, University of London
3768 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
3769 Emilia Käsper for the initial patch.
3771 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
3773 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
3774 ciphersuites which can be exploited in a denial of service attack.
3775 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
3776 and detecting this bug and to Wolfgang Ettlinger
3777 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
3781 *) Return an error when checking OCSP signatures when key is NULL.
3782 This fixes a DoS attack. (CVE-2013-0166)
3785 *) Make openssl verify return errors.
3786 [Chris Palmer <palmer@google.com> and Ben Laurie]
3788 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
3789 the right response is stapled. Also change SSL_get_certificate()
3790 so it returns the certificate actually sent.
3791 See http://rt.openssl.org/Ticket/Display.html?id=2836.
3792 [Rob Stradling <rob.stradling@comodo.com>]
3794 *) Fix possible deadlock when decoding public keys.
3797 *) Don't use TLS 1.0 record version number in initial client hello
3801 Changes between 1.0.1b and 1.0.1c [10 May 2012]
3803 *) Sanity check record length before skipping explicit IV in TLS
3804 1.2, 1.1 and DTLS to fix DoS attack.
3806 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
3807 fuzzing as a service testing platform.
3811 *) Initialise tkeylen properly when encrypting CMS messages.
3812 Thanks to Solar Designer of Openwall for reporting this issue.
3815 *) In FIPS mode don't try to use composite ciphers as they are not
3819 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
3821 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
3822 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
3823 mean any application compiled against OpenSSL 1.0.0 headers setting
3824 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disabling
3825 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
3826 0x10000000L Any application which was previously compiled against
3827 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
3828 will need to be recompiled as a result. Letting be results in
3829 inability to disable specifically TLS 1.1 and in client context,
3830 in unlike event, limit maximum offered version to TLS 1.0 [see below].
3833 *) In order to ensure interoperability SSL_OP_NO_protocolX does not
3834 disable just protocol X, but all protocols above X *if* there are
3835 protocols *below* X still enabled. In more practical terms it means
3836 that if application wants to disable TLS1.0 in favor of TLS1.1 and
3837 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
3838 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
3842 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
3844 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
3845 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
3846 in CRYPTO_realloc_clean.
3848 Thanks to Tavis Ormandy, Google Security Team, for discovering this
3849 issue and to Adam Langley <agl@chromium.org> for fixing it.
3851 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
3853 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
3856 *) Workarounds for some broken servers that "hang" if a client hello
3857 record length exceeds 255 bytes.
3859 1. Do not use record version number > TLS 1.0 in initial client
3860 hello: some (but not all) hanging servers will now work.
3861 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
3862 the number of ciphers sent in the client hello. This should be
3863 set to an even number, such as 50, for example by passing:
3864 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
3865 Most broken servers should now work.
3866 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
3867 TLS 1.2 client support entirely.
3870 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
3873 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
3875 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
3876 STRING form instead of a DigestInfo.
3879 *) The format used for MDC2 RSA signatures is inconsistent between EVP
3880 and the RSA_sign/RSA_verify functions. This was made more apparent when
3881 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
3882 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
3883 the correct format in RSA_verify so both forms transparently work.
3886 *) Some servers which support TLS 1.0 can choke if we initially indicate
3887 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
3888 encrypted premaster secret. As a workaround use the maximum permitted
3889 client version in client hello, this should keep such servers happy
3890 and still work with previous versions of OpenSSL.
3893 *) Add support for TLS/DTLS heartbeats.
3894 [Robin Seggelmann <seggelmann@fh-muenster.de>]
3896 *) Add support for SCTP.
3897 [Robin Seggelmann <seggelmann@fh-muenster.de>]
3899 *) Improved PRNG seeding for VOS.
3900 [Paul Green <Paul.Green@stratus.com>]
3902 *) Extensive assembler packs updates, most notably:
3904 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
3905 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
3906 - x86_64: bit-sliced AES implementation;
3907 - ARM: NEON support, contemporary platforms optimizations;
3908 - s390x: z196 support;
3909 - *: GHASH and GF(2^m) multiplication implementations;
3913 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
3914 (removal of unnecessary code)
3915 [Peter Sylvester <peter.sylvester@edelweb.fr>]
3917 *) Add TLS key material exporter from RFC 5705.
3920 *) Add DTLS-SRTP negotiation from RFC 5764.
3923 *) Add Next Protocol Negotiation,
3924 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
3925 disabled with a no-npn flag to config or Configure. Code donated
3927 [Adam Langley <agl@google.com> and Ben Laurie]
3929 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
3930 NIST-P256, NIST-P521, with constant-time single point multiplication on
3931 typical inputs. Compiler support for the nonstandard type __uint128_t is
3932 required to use this (present in gcc 4.4 and later, for 64-bit builds).
3933 Code made available under Apache License version 2.0.
3935 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
3936 line to include this in your build of OpenSSL, and run "make depend" (or
3937 "make update"). This enables the following EC_METHODs:
3939 EC_GFp_nistp224_method()
3940 EC_GFp_nistp256_method()
3941 EC_GFp_nistp521_method()
3943 EC_GROUP_new_by_curve_name() will automatically use these (while
3944 EC_GROUP_new_curve_GFp() currently prefers the more flexible
3946 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
3948 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
3949 all platforms. Move ssize_t definition from e_os.h to the public
3950 header file e_os2.h as it now appears in public header file cms.h
3953 *) New -sigopt option to the ca, req and x509 utilities. Additional
3954 signature parameters can be passed using this option and in
3958 *) Add RSA PSS signing function. This will generate and set the
3959 appropriate AlgorithmIdentifiers for PSS based on those in the
3960 corresponding EVP_MD_CTX structure. No application support yet.
3963 *) Support for companion algorithm specific ASN1 signing routines.
3964 New function ASN1_item_sign_ctx() signs a pre-initialised
3965 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
3966 the appropriate parameters.
3969 *) Add new algorithm specific ASN1 verification initialisation function
3970 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
3971 handling will be the same no matter what EVP_PKEY_METHOD is used.
3972 Add a PSS handler to support verification of PSS signatures: checked
3973 against a number of sample certificates.
3976 *) Add signature printing for PSS. Add PSS OIDs.
3977 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
3979 *) Add algorithm specific signature printing. An individual ASN1 method
3980 can now print out signatures instead of the standard hex dump.
3982 More complex signatures (e.g. PSS) can print out more meaningful
3983 information. Include DSA version that prints out the signature
3987 *) Password based recipient info support for CMS library: implementing
3991 *) Split password based encryption into PBES2 and PBKDF2 functions. This
3992 neatly separates the code into cipher and PBE sections and is required
3993 for some algorithms that split PBES2 into separate pieces (such as
3994 password based CMS).
3997 *) Session-handling fixes:
3998 - Fix handling of connections that are resuming with a session ID,
3999 but also support Session Tickets.
4000 - Fix a bug that suppressed issuing of a new ticket if the client
4001 presented a ticket with an expired session.
4002 - Try to set the ticket lifetime hint to something reasonable.
4003 - Make tickets shorter by excluding irrelevant information.
4004 - On the client side, don't ignore renewed tickets.
4005 [Adam Langley, Bodo Moeller (Google)]
4007 *) Fix PSK session representation.
4010 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
4012 This work was sponsored by Intel.
4015 *) Add GCM support to TLS library. Some custom code is needed to split
4016 the IV between the fixed (from PRF) and explicit (from TLS record)
4017 portions. This adds all GCM ciphersuites supported by RFC5288 and
4018 RFC5289. Generalise some AES* cipherstrings to include GCM and
4019 add a special AESGCM string for GCM only.
4022 *) Expand range of ctrls for AES GCM. Permit setting invocation
4023 field on decrypt and retrieval of invocation field only on encrypt.
4026 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
4027 As required by RFC5289 these ciphersuites cannot be used if for
4028 versions of TLS earlier than 1.2.
4031 *) For FIPS capable OpenSSL interpret a NULL default public key method
4032 as unset and return the appropriate default but do *not* set the default.
4033 This means we can return the appropriate method in applications that
4034 switch between FIPS and non-FIPS modes.
4037 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
4038 ENGINE is used then we cannot handle that in the FIPS module so we
4039 keep original code iff non-FIPS operations are allowed.
4042 *) Add -attime option to openssl utilities.
4043 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
4045 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
4048 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
4049 FIPS EC methods unconditionally for now.
4052 *) New build option no-ec2m to disable characteristic 2 code.
4055 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
4056 all cases can be covered as some introduce binary incompatibilities.
4059 *) Redirect RSA operations to FIPS module including keygen,
4060 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
4063 *) Add similar low level API blocking to ciphers.
4066 *) Low level digest APIs are not approved in FIPS mode: any attempt
4067 to use these will cause a fatal error. Applications that *really* want
4068 to use them can use the private_* version instead.
4071 *) Redirect cipher operations to FIPS module for FIPS builds.
4074 *) Redirect digest operations to FIPS module for FIPS builds.
4077 *) Update build system to add "fips" flag which will link in fipscanister.o
4078 for static and shared library builds embedding a signature if needed.
4081 *) Output TLS supported curves in preference order instead of numerical
4082 order. This is currently hardcoded for the highest order curves first.
4083 This should be configurable so applications can judge speed vs strength.
4086 *) Add TLS v1.2 server support for client authentication.
4089 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
4093 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
4094 FIPS modules versions.
4097 *) Add TLS v1.2 client side support for client authentication. Keep cache
4098 of handshake records longer as we don't know the hash algorithm to use
4099 until after the certificate request message is received.
4102 *) Initial TLS v1.2 client support. Add a default signature algorithms
4103 extension including all the algorithms we support. Parse new signature
4104 format in client key exchange. Relax some ECC signing restrictions for
4105 TLS v1.2 as indicated in RFC5246.
4108 *) Add server support for TLS v1.2 signature algorithms extension. Switch
4109 to new signature format when needed using client digest preference.
4110 All server ciphersuites should now work correctly in TLS v1.2. No client
4111 support yet and no support for client certificates.
4114 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
4115 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
4116 ciphersuites. At present only RSA key exchange ciphersuites work with
4117 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
4118 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
4119 and version checking.
4122 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
4123 with this defined it will not be affected by any changes to ssl internal
4124 structures. Add several utility functions to allow openssl application
4125 to work with OPENSSL_NO_SSL_INTERN defined.
4128 *) A long standing patch to add support for SRP from EdelWeb (Peter
4129 Sylvester and Christophe Renou) was integrated.
4130 [Christophe Renou <christophe.renou@edelweb.fr>, Peter Sylvester
4131 <peter.sylvester@edelweb.fr>, Tom Wu <tjw@cs.stanford.edu>, and
4134 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
4137 *) Permit abbreviated handshakes when renegotiating using the function
4138 SSL_renegotiate_abbreviated().
4139 [Robin Seggelmann <seggelmann@fh-muenster.de>]
4141 *) Add call to ENGINE_register_all_complete() to
4142 ENGINE_load_builtin_engines(), so some implementations get used
4143 automatically instead of needing explicit application support.
4146 *) Add support for TLS key exporter as described in RFC5705.
4147 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
4149 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
4150 a few changes are required:
4152 Add SSL_OP_NO_TLSv1_1 flag.
4153 Add TLSv1_1 methods.
4154 Update version checking logic to handle version 1.1.
4155 Add explicit IV handling (ported from DTLS code).
4156 Add command line options to s_client/s_server.
4159 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
4161 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
4162 in CMS and PKCS7 code. When RSA decryption fails use a random key for
4163 content decryption and always return the same error. Note: this attack
4164 needs on average 2^20 messages so it only affects automated senders. The
4165 old behaviour can be re-enabled in the CMS code by setting the
4166 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
4167 an MMA defence is not necessary.
4168 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
4169 this issue. (CVE-2012-0884)
4172 *) Fix CVE-2011-4619: make sure we really are receiving a
4173 client hello before rejecting multiple SGC restarts. Thanks to
4174 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
4177 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
4179 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
4180 Thanks to Antonio Martin, Enterprise Secure Access Research and
4181 Development, Cisco Systems, Inc. for discovering this bug and
4182 preparing a fix. (CVE-2012-0050)
4185 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
4187 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
4188 of the Vaudenay padding oracle attack on CBC mode encryption
4189 which enables an efficient plaintext recovery attack against
4190 the OpenSSL implementation of DTLS. Their attack exploits timing
4191 differences arising during decryption processing. A research
4192 paper describing this attack can be found at:
4193 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
4194 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
4195 Security Group at Royal Holloway, University of London
4196 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
4197 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
4198 for preparing the fix. (CVE-2011-4108)
4199 [Robin Seggelmann, Michael Tuexen]
4201 *) Clear bytes used for block padding of SSL 3.0 records.
4203 [Adam Langley (Google)]
4205 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
4206 Kadianakis <desnacked@gmail.com> for discovering this issue and
4207 Adam Langley for preparing the fix. (CVE-2011-4619)
4208 [Adam Langley (Google)]
4210 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
4211 [Andrey Kulikov <amdeich@gmail.com>]
4213 *) Prevent malformed RFC3779 data triggering an assertion failure.
4214 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
4215 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
4216 [Rob Austein <sra@hactrn.net>]
4218 *) Improved PRNG seeding for VOS.
4219 [Paul Green <Paul.Green@stratus.com>]
4221 *) Fix ssl_ciph.c set-up race.
4222 [Adam Langley (Google)]
4224 *) Fix spurious failures in ecdsatest.c.
4225 [Emilia Käsper (Google)]
4227 *) Fix the BIO_f_buffer() implementation (which was mixing different
4228 interpretations of the '..._len' fields).
4229 [Adam Langley (Google)]
4231 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
4232 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
4233 threads won't reuse the same blinding coefficients.
4235 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
4236 lock to call BN_BLINDING_invert_ex, and avoids one use of
4237 BN_BLINDING_update for each BN_BLINDING structure (previously,
4238 the last update always remained unused).
4239 [Emilia Käsper (Google)]
4241 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
4242 [Bob Buckholz (Google)]
4244 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
4246 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
4247 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
4248 [Kaspar Brand <ossl@velox.ch>]
4250 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
4251 for multi-threaded use of ECDH. (CVE-2011-3210)
4252 [Adam Langley (Google)]
4254 *) Fix x509_name_ex_d2i memory leak on bad inputs.
4257 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
4258 signature public key algorithm by using OID xref utilities instead.
4259 Before this you could only use some ECC ciphersuites with SHA1 only.
4262 *) Add protection against ECDSA timing attacks as mentioned in the paper
4263 by Billy Bob Brumley and Nicola Tuveri, see:
4265 http://eprint.iacr.org/2011/232.pdf
4267 [Billy Bob Brumley and Nicola Tuveri]
4269 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
4271 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
4272 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
4274 *) Fix bug in string printing code: if *any* escaping is enabled we must
4275 escape the escape character (backslash) or the resulting string is
4279 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
4281 *) Disable code workaround for ancient and obsolete Netscape browsers
4282 and servers: an attacker can use it in a ciphersuite downgrade attack.
4283 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
4286 *) Fixed J-PAKE implementation error, originally discovered by
4287 Sebastien Martini, further info and confirmation from Stefan
4288 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
4291 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
4293 *) Fix extension code to avoid race conditions which can result in a buffer
4294 overrun vulnerability: resumed sessions must not be modified as they can
4295 be shared by multiple threads. CVE-2010-3864
4298 *) Fix WIN32 build system to correctly link an ENGINE directory into
4302 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
4304 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
4306 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
4308 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
4310 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
4311 context. The operation can be customised via the ctrl mechanism in
4312 case ENGINEs want to include additional functionality.
4315 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
4318 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
4319 output hashes compatible with older versions of OpenSSL.
4320 [Willy Weisz <weisz@vcpc.univie.ac.at>]
4322 *) Fix compression algorithm handling: if resuming a session use the
4323 compression algorithm of the resumed session instead of determining
4324 it from client hello again. Don't allow server to change algorithm.
4327 *) Add load_crls() function to apps tidying load_certs() too. Add option
4328 to verify utility to allow additional CRLs to be included.
4331 *) Update OCSP request code to permit adding custom headers to the request:
4332 some responders need this.
4335 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
4337 [Julia Lawall <julia@diku.dk>]
4339 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
4340 needlessly dereferenced structures, used obsolete functions and
4341 didn't handle all updated verify codes correctly.
4344 *) Disable MD2 in the default configuration.
4347 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
4348 indicate the initial BIO being pushed or popped. This makes it possible
4349 to determine whether the BIO is the one explicitly called or as a result
4350 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
4351 it handles reference counts correctly and doesn't zero out the I/O bio
4352 when it is not being explicitly popped. WARNING: applications which
4353 included workarounds for the old buggy behaviour will need to be modified
4354 or they could free up already freed BIOs.
4357 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
4358 renaming to all platforms (within the 0.9.8 branch, this was
4359 done conditionally on Netware platforms to avoid a name clash).
4360 [Guenter <lists@gknw.net>]
4362 *) Add ECDHE and PSK support to DTLS.
4363 [Michael Tuexen <tuexen@fh-muenster.de>]
4365 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
4369 *) Add "missing" function EVP_MD_flags() (without this the only way to
4370 retrieve a digest flags is by accessing the structure directly. Update
4371 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
4372 or cipher is registered as in the "from" argument. Print out all
4373 registered digests in the dgst usage message instead of manually
4374 attempting to work them out.
4377 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
4378 this allows the use of compression and extensions. Change default cipher
4379 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
4380 by default unless an application cipher string requests it.
4383 *) Alter match criteria in PKCS12_parse(). It used to try to use local
4384 key ids to find matching certificates and keys but some PKCS#12 files
4385 don't follow the (somewhat unwritten) rules and this strategy fails.
4386 Now just gather all certificates together and the first private key
4387 then look for the first certificate that matches the key.
4390 *) Support use of registered digest and cipher names for dgst and cipher
4391 commands instead of having to add each one as a special case. So now
4398 openssl dgst -sha256 foo
4400 and this works for ENGINE based algorithms too.
4404 *) Update Gost ENGINE to support parameter files.
4405 [Victor B. Wagner <vitus@cryptocom.ru>]
4407 *) Support GeneralizedTime in ca utility.
4408 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
4410 *) Enhance the hash format used for certificate directory links. The new
4411 form uses the canonical encoding (meaning equivalent names will work
4412 even if they aren't identical) and uses SHA1 instead of MD5. This form
4413 is incompatible with the older format and as a result c_rehash should
4414 be used to rebuild symbolic links.
4417 *) Make PKCS#8 the default write format for private keys, replacing the
4418 traditional format. This form is standardised, more secure and doesn't
4419 include an implicit MD5 dependency.
4422 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
4423 committed to OpenSSL should pass this lot as a minimum.
4426 *) Add session ticket override functionality for use by EAP-FAST.
4427 [Jouni Malinen <j@w1.fi>]
4429 *) Modify HMAC functions to return a value. Since these can be implemented
4430 in an ENGINE errors can occur.
4433 *) Type-checked OBJ_bsearch_ex.
4436 *) Type-checked OBJ_bsearch. Also some constification necessitated
4437 by type-checking. Still to come: TXT_DB, bsearch(?),
4438 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
4442 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
4443 seconds to a tm structure directly, instead of going through OS
4444 specific date routines. This avoids any issues with OS routines such
4445 as the year 2038 bug. New *_adj() functions for ASN1 time structures
4446 and X509_time_adj_ex() to cover the extended range. The existing
4447 X509_time_adj() is still usable and will no longer have any date issues.
4450 *) Delta CRL support. New use deltas option which will attempt to locate
4451 and search any appropriate delta CRLs available.
4453 This work was sponsored by Google.
4456 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
4457 code and add additional score elements. Validate alternate CRL paths
4458 as part of the CRL checking and indicate a new error "CRL path validation
4459 error" in this case. Applications wanting additional details can use
4460 the verify callback and check the new "parent" field. If this is not
4461 NULL CRL path validation is taking place. Existing applications won't
4462 see this because it requires extended CRL support which is off by
4465 This work was sponsored by Google.
4468 *) Support for freshest CRL extension.
4470 This work was sponsored by Google.
4473 *) Initial indirect CRL support. Currently only supported in the CRLs
4474 passed directly and not via lookup. Process certificate issuer
4475 CRL entry extension and lookup CRL entries by bother issuer name
4476 and serial number. Check and process CRL issuer entry in IDP extension.
4478 This work was sponsored by Google.
4481 *) Add support for distinct certificate and CRL paths. The CRL issuer
4482 certificate is validated separately in this case. Only enabled if
4483 an extended CRL support flag is set: this flag will enable additional
4484 CRL functionality in future.
4486 This work was sponsored by Google.
4489 *) Add support for policy mappings extension.
4491 This work was sponsored by Google.
4494 *) Fixes to pathlength constraint, self issued certificate handling,
4495 policy processing to align with RFC3280 and PKITS tests.
4497 This work was sponsored by Google.
4500 *) Support for name constraints certificate extension. DN, email, DNS
4501 and URI types are currently supported.
4503 This work was sponsored by Google.
4506 *) To cater for systems that provide a pointer-based thread ID rather
4507 than numeric, deprecate the current numeric thread ID mechanism and
4508 replace it with a structure and associated callback type. This
4509 mechanism allows a numeric "hash" to be extracted from a thread ID in
4510 either case, and on platforms where pointers are larger than 'long',
4511 mixing is done to help ensure the numeric 'hash' is usable even if it
4512 can't be guaranteed unique. The default mechanism is to use "&errno"
4513 as a pointer-based thread ID to distinguish between threads.
4515 Applications that want to provide their own thread IDs should now use
4516 CRYPTO_THREADID_set_callback() to register a callback that will call
4517 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
4519 Note that ERR_remove_state() is now deprecated, because it is tied
4520 to the assumption that thread IDs are numeric. ERR_remove_state(0)
4521 to free the current thread's error state should be replaced by
4522 ERR_remove_thread_state(NULL).
4524 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
4525 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
4526 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
4527 application was previously providing a numeric thread callback that
4528 was inappropriate for distinguishing threads, then uniqueness might
4529 have been obtained with &errno that happened immediately in the
4530 intermediate development versions of OpenSSL; this is no longer the
4531 case, the numeric thread callback will now override the automatic use
4533 [Geoff Thorpe, with help from Bodo Moeller]
4535 *) Initial support for different CRL issuing certificates. This covers a
4536 simple case where the self issued certificates in the chain exist and
4537 the real CRL issuer is higher in the existing chain.
4539 This work was sponsored by Google.
4542 *) Removed effectively defunct crypto/store from the build.
4545 *) Revamp of STACK to provide stronger type-checking. Still to come:
4546 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
4547 ASN1_STRING, CONF_VALUE.
4550 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
4551 RAM on SSL connections. This option can save about 34k per idle SSL.
4554 *) Revamp of LHASH to provide stronger type-checking. Still to come:
4555 STACK, TXT_DB, bsearch, qsort.
4558 *) Initial support for Cryptographic Message Syntax (aka CMS) based
4559 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
4560 support for data, signedData, compressedData, digestedData and
4561 encryptedData, envelopedData types included. Scripts to check against
4562 RFC4134 examples draft and interop and consistency checks of many
4563 content types and variants.
4566 *) Add options to enc utility to support use of zlib compression BIO.
4569 *) Extend mk1mf to support importing of options and assembly language
4570 files from Configure script, currently only included in VC-WIN32.
4571 The assembly language rules can now optionally generate the source
4572 files from the associated perl scripts.
4575 *) Implement remaining functionality needed to support GOST ciphersuites.
4576 Interop testing has been performed using CryptoPro implementations.
4577 [Victor B. Wagner <vitus@cryptocom.ru>]
4579 *) s390x assembler pack.
4582 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
4586 *) Implement Opaque PRF Input TLS extension as specified in
4587 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
4588 official specification yet and no extension type assignment by
4589 IANA exists, this extension (for now) will have to be explicitly
4590 enabled when building OpenSSL by providing the extension number
4591 to use. For example, specify an option
4593 -DTLSEXT_TYPE_opaque_prf_input=0x9527
4595 to the "config" or "Configure" script to enable the extension,
4596 assuming extension number 0x9527 (which is a completely arbitrary
4597 and unofficial assignment based on the MD5 hash of the Internet
4598 Draft). Note that by doing so, you potentially lose
4599 interoperability with other TLS implementations since these might
4600 be using the same extension number for other purposes.
4602 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
4603 opaque PRF input value to use in the handshake. This will create
4604 an internal copy of the length-'len' string at 'src', and will
4605 return non-zero for success.
4607 To get more control and flexibility, provide a callback function
4610 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
4611 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
4615 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
4618 Callback function 'cb' will be called in handshakes, and is
4619 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
4620 Argument 'arg' is for application purposes (the value as given to
4621 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
4622 be provided to the callback function). The callback function
4623 has to return non-zero to report success: usually 1 to use opaque
4624 PRF input just if possible, or 2 to enforce use of the opaque PRF
4625 input. In the latter case, the library will abort the handshake
4626 if opaque PRF input is not successfully negotiated.
4628 Arguments 'peerinput' and 'len' given to the callback function
4629 will always be NULL and 0 in the case of a client. A server will
4630 see the client's opaque PRF input through these variables if
4631 available (NULL and 0 otherwise). Note that if the server
4632 provides an opaque PRF input, the length must be the same as the
4633 length of the client's opaque PRF input.
4635 Note that the callback function will only be called when creating
4636 a new session (session resumption can resume whatever was
4637 previously negotiated), and will not be called in SSL 2.0
4638 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
4639 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
4640 for applications that need to enforce opaque PRF input.
4644 *) Update ssl code to support digests other than SHA1+MD5 for handshake
4647 [Victor B. Wagner <vitus@cryptocom.ru>]
4649 *) Add RFC4507 support to OpenSSL. This includes the corrections in
4650 RFC4507bis. The encrypted ticket format is an encrypted encoded
4651 SSL_SESSION structure, that way new session features are automatically
4654 If a client application caches session in an SSL_SESSION structure
4655 support is transparent because tickets are now stored in the encoded
4658 The SSL_CTX structure automatically generates keys for ticket
4659 protection in servers so again support should be possible
4660 with no application modification.
4662 If a client or server wishes to disable RFC4507 support then the option
4663 SSL_OP_NO_TICKET can be set.
4665 Add a TLS extension debugging callback to allow the contents of any client
4666 or server extensions to be examined.
4668 This work was sponsored by Google.
4671 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
4672 OpenSSL should now compile cleanly on gcc 4.2
4673 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
4675 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
4676 support including streaming MAC support: this is required for GOST
4677 ciphersuite support.
4678 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
4680 *) Add option -stream to use PKCS#7 streaming in smime utility. New
4681 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
4682 to output in BER and PEM format.
4685 *) Experimental support for use of HMAC via EVP_PKEY interface. This
4686 allows HMAC to be handled via the EVP_DigestSign*() interface. The
4687 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
4688 ENGINE support for HMAC keys which are unextractable. New -mac and
4689 -macopt options to dgst utility.
4692 *) New option -sigopt to dgst utility. Update dgst to use
4693 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
4694 alternative signing parameters such as X9.31 or PSS in the dgst
4698 *) Change ssl_cipher_apply_rule(), the internal function that does
4699 the work each time a ciphersuite string requests enabling
4700 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
4701 removing ("!foo+bar") a class of ciphersuites: Now it maintains
4702 the order of disabled ciphersuites such that those ciphersuites
4703 that most recently went from enabled to disabled not only stay
4704 in order with respect to each other, but also have higher priority
4705 than other disabled ciphersuites the next time ciphersuites are
4708 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
4709 the same ciphersuites as with "HIGH" alone, but in a specific
4710 order where the PSK ciphersuites come first (since they are the
4711 most recently disabled ciphersuites when "HIGH" is parsed).
4713 Also, change ssl_create_cipher_list() (using this new
4714 functionality) such that between otherwise identical
4715 ciphersuites, ephemeral ECDH is preferred over ephemeral DH in
4719 *) Change ssl_create_cipher_list() so that it automatically
4720 arranges the ciphersuites in reasonable order before starting
4721 to process the rule string. Thus, the definition for "DEFAULT"
4722 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
4723 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
4724 This makes it much easier to arrive at a reasonable default order
4725 in applications for which anonymous ciphers are OK (meaning
4726 that you can't actually use DEFAULT).
4727 [Bodo Moeller; suggested by Victor Duchovni]
4729 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
4730 processing) into multiple integers instead of setting
4731 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
4732 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
4733 (These masks as well as the individual bit definitions are hidden
4734 away into the non-exported interface ssl/ssl_locl.h, so this
4735 change to the definition of the SSL_CIPHER structure shouldn't
4736 affect applications.) This give us more bits for each of these
4737 categories, so there is no longer a need to coagulate AES128 and
4738 AES256 into a single algorithm bit, and to coagulate Camellia128
4739 and Camellia256 into a single algorithm bit, which has led to all
4742 Thus, among other things, the kludge introduced in 0.9.7m and
4743 0.9.8e for masking out AES256 independently of AES128 or masking
4744 out Camellia256 independently of AES256 is not needed here in 0.9.9.
4746 With the change, we also introduce new ciphersuite aliases that
4747 so far were missing: "AES128", "AES256", "CAMELLIA128", and
4751 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
4752 Use the leftmost N bytes of the signature input if the input is
4753 larger than the prime q (with N being the size in bytes of q).
4756 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
4757 it yet and it is largely untested.
4760 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
4763 *) Initial incomplete changes to avoid need for function casts in OpenSSL
4764 some compilers (gcc 4.2 and later) reject their use. Safestack is
4765 reimplemented. Update ASN1 to avoid use of legacy functions.
4768 *) Win32/64 targets are linked with Winsock2.
4771 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
4772 to external functions. This can be used to increase CRL handling
4773 efficiency especially when CRLs are very large by (for example) storing
4774 the CRL revoked certificates in a database.
4777 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
4778 new CRLs added to a directory can be used. New command line option
4779 -verify_return_error to s_client and s_server. This causes real errors
4780 to be returned by the verify callback instead of carrying on no matter
4781 what. This reflects the way a "real world" verify callback would behave.
4784 *) GOST engine, supporting several GOST algorithms and public key formats.
4785 Kindly donated by Cryptocom.
4788 *) Partial support for Issuing Distribution Point CRL extension. CRLs
4789 partitioned by DP are handled but no indirect CRL or reason partitioning
4790 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
4791 selected via a scoring technique which handles IDP and AKID in CRLs.
4794 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
4795 will ultimately be used for all verify operations: this will remove the
4796 X509_STORE dependency on certificate verification and allow alternative
4797 lookup methods. X509_STORE based implementations of these two callbacks.
4800 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
4801 Modify get_crl() to find a valid (unexpired) CRL if possible.
4804 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
4805 this would be called X509_CRL_cmp() but that name is already used by
4806 a function that just compares CRL issuer names. Cache several CRL
4807 extensions in X509_CRL structure and cache CRLDP in X509.
4810 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
4811 this maps equivalent X509_NAME structures into a consistent structure.
4812 Name comparison can then be performed rapidly using memcmp().
4815 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
4819 *) Allow digests to supply their own micalg string for S/MIME type using
4820 the ctrl EVP_MD_CTRL_MICALG.
4823 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
4824 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
4825 ctrl. It can then customise the structure before and/or after signing
4829 *) New function OBJ_add_sigid() to allow application defined signature OIDs
4830 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
4831 to free up any added signature OIDs.
4834 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
4835 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
4836 digest and cipher tables. New options added to openssl utility:
4837 list-message-digest-algorithms and list-cipher-algorithms.
4840 *) Change the array representation of binary polynomials: the list
4841 of degrees of non-zero coefficients is now terminated with -1.
4842 Previously it was terminated with 0, which was also part of the
4843 value; thus, the array representation was not applicable to
4844 polynomials where t^0 has coefficient zero. This change makes
4845 the array representation useful in a more general context.
4848 *) Various modifications and fixes to SSL/TLS cipher string
4849 handling. For ECC, the code now distinguishes between fixed ECDH
4850 with RSA certificates on the one hand and with ECDSA certificates
4851 on the other hand, since these are separate ciphersuites. The
4852 unused code for Fortezza ciphersuites has been removed.
4854 For consistency with EDH, ephemeral ECDH is now called "EECDH"
4855 (not "ECDHE"). For consistency with the code for DH
4856 certificates, use of ECDH certificates is now considered ECDH
4857 authentication, not RSA or ECDSA authentication (the latter is
4858 merely the CA's signing algorithm and not actively used in the
4861 The temporary ciphersuite alias "ECCdraft" is no longer
4862 available, and ECC ciphersuites are no longer excluded from "ALL"
4863 and "DEFAULT". The following aliases now exist for RFC 4492
4864 ciphersuites, most of these by analogy with the DH case:
4866 kECDHr - ECDH cert, signed with RSA
4867 kECDHe - ECDH cert, signed with ECDSA
4868 kECDH - ECDH cert (signed with either RSA or ECDSA)
4869 kEECDH - ephemeral ECDH
4870 ECDH - ECDH cert or ephemeral ECDH
4876 AECDH - anonymous ECDH
4877 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
4881 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
4882 Use correct micalg parameters depending on digest(s) in signed message.
4885 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
4886 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
4889 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
4890 an engine to register a method. Add ENGINE lookups for methods and
4891 functional reference processing.
4894 *) New functions EVP_Digest{Sign,Verify)*. These are enhanced versions of
4895 EVP_{Sign,Verify}* which allow an application to customise the signature
4899 *) New -resign option to smime utility. This adds one or more signers
4900 to an existing PKCS#7 signedData structure. Also -md option to use an
4901 alternative message digest algorithm for signing.
4904 *) Tidy up PKCS#7 routines and add new functions to make it easier to
4905 create PKCS7 structures containing multiple signers. Update smime
4906 application to support multiple signers.
4909 *) New -macalg option to pkcs12 utility to allow setting of an alternative
4913 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
4914 Reorganize PBE internals to lookup from a static table using NIDs,
4915 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
4916 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
4917 PRF which will be automatically used with PBES2.
4920 *) Replace the algorithm specific calls to generate keys in "req" with the
4924 *) Update PKCS#7 enveloped data routines to use new API. This is now
4925 supported by any public key method supporting the encrypt operation. A
4926 ctrl is added to allow the public key algorithm to examine or modify
4927 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
4931 *) Add a ctrl to asn1 method to allow a public key algorithm to express
4932 a default digest type to use. In most cases this will be SHA1 but some
4933 algorithms (such as GOST) need to specify an alternative digest. The
4934 return value indicates how strong the preference is 1 means optional and
4935 2 is mandatory (that is it is the only supported type). Modify
4936 ASN1_item_sign() to accept a NULL digest argument to indicate it should
4937 use the default md. Update openssl utilities to use the default digest
4938 type for signing if it is not explicitly indicated.
4941 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
4942 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
4943 signing method from the key type. This effectively removes the link
4944 between digests and public key types.
4947 *) Add an OID cross reference table and utility functions. Its purpose is to
4948 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
4949 rsaEncryption. This will allow some of the algorithm specific hackery
4950 needed to use the correct OID to be removed.
4953 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
4954 structures for PKCS7_sign(). They are now set up by the relevant public
4958 *) Add provisional EC pkey method with support for ECDSA and ECDH.
4961 *) Add support for key derivation (agreement) in the API, DH method and
4965 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
4966 public and private key formats. As a side effect these add additional
4967 command line functionality not previously available: DSA signatures can be
4968 generated and verified using pkeyutl and DH key support and generation in
4973 [Oliver Tappe <zooey@hirschkaefer.de>]
4975 *) New make target "install_html_docs" installs HTML renditions of the
4977 [Oliver Tappe <zooey@hirschkaefer.de>]
4979 *) New utility "genpkey" this is analogous to "genrsa" etc except it can
4980 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
4981 support key and parameter generation and add initial key generation
4982 functionality for RSA.
4985 *) Add functions for main EVP_PKEY_method operations. The undocumented
4986 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
4987 EVP_PKEY_{encrypt,decrypt}_old.
4990 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
4991 key API, doesn't do much yet.
4994 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
4995 public key algorithms. New option to openssl utility:
4996 "list-public-key-algorithms" to print out info.
4999 *) Implement the Supported Elliptic Curves Extension for
5000 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
5003 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
5004 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
5007 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
5008 utilities such as rsa, dsa, dsaparam etc except they process any key
5012 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
5013 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
5014 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
5018 *) Initial support for pluggable public key ASN1.
5019 De-spaghettify the public key ASN1 handling. Move public and private
5020 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
5021 algorithm specific handling to a single module within the relevant
5022 algorithm directory. Add functions to allow (near) opaque processing
5023 of public and private key structures.
5026 *) Implement the Supported Point Formats Extension for
5027 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
5030 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
5031 for the psk identity [hint] and the psk callback functions to the
5032 SSL_SESSION, SSL and SSL_CTX structure.
5035 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
5039 SSL_CTX_use_psk_identity_hint
5040 SSL_get_psk_identity_hint
5041 SSL_get_psk_identity
5042 SSL_use_psk_identity_hint
5044 [Mika Kousa and Pasi Eronen of Nokia Corporation]
5046 *) Add RFC 3161 compliant time stamp request creation, response generation
5047 and response verification functionality.
5048 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
5050 *) Add initial support for TLS extensions, specifically for the server_name
5051 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
5052 have new members for a host name. The SSL data structure has an
5053 additional member SSL_CTX *initial_ctx so that new sessions can be
5054 stored in that context to allow for session resumption, even after the
5055 SSL has been switched to a new SSL_CTX in reaction to a client's
5056 server_name extension.
5058 New functions (subject to change):
5060 SSL_get_servername()
5061 SSL_get_servername_type()
5064 New CTRL codes and macros (subject to change):
5066 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
5067 - SSL_CTX_set_tlsext_servername_callback()
5068 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
5069 - SSL_CTX_set_tlsext_servername_arg()
5070 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
5072 openssl s_client has a new '-servername ...' option.
5074 openssl s_server has new options '-servername_host ...', '-cert2 ...',
5075 '-key2 ...', '-servername_fatal' (subject to change). This allows
5076 testing the HostName extension for a specific single host name ('-cert'
5077 and '-key' remain fallbacks for handshakes without HostName
5078 negotiation). If the unrecognized_name alert has to be sent, this by
5079 default is a warning; it becomes fatal with the '-servername_fatal'
5082 [Peter Sylvester, Remy Allais, Christophe Renou]
5084 *) Whirlpool hash implementation is added.
5087 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
5088 bn(64,32). Because of instruction set limitations it doesn't have
5089 any negative impact on performance. This was done mostly in order
5090 to make it possible to share assembler modules, such as bn_mul_mont
5091 implementations, between 32- and 64-bit builds without hassle.
5094 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
5095 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
5099 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
5100 dedicated Montgomery multiplication procedure, is introduced.
5101 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
5102 "64-bit" performance on certain 32-bit targets.
5105 *) New option SSL_OP_NO_COMP to disable use of compression selectively
5106 in SSL structures. New SSL ctrl to set maximum send fragment size.
5107 Save memory by setting the I/O buffer sizes dynamically instead of
5108 using the maximum available value.
5111 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
5112 in addition to the text details.
5115 *) Very, very preliminary EXPERIMENTAL support for printing of general
5116 ASN1 structures. This currently produces rather ugly output and doesn't
5117 handle several customised structures at all.
5120 *) Integrated support for PVK file format and some related formats such
5121 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
5122 these in the 'rsa' and 'dsa' utilities.
5125 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
5128 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
5129 place for the (very old) "NETSCAPE" format certificates which are now
5130 handled using new ASN1 code equivalents.
5133 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
5134 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
5135 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
5138 *) Modify CRL distribution points extension code to print out previously
5139 unsupported fields. Enhance extension setting code to allow setting of
5143 *) Add print and set support for Issuing Distribution Point CRL extension.
5146 *) Change 'Configure' script to enable Camellia by default.
5149 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
5151 *) When rejecting SSL/TLS records due to an incorrect version number, never
5152 update s->server with a new major version number. As of
5153 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
5154 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
5155 the previous behavior could result in a read attempt at NULL when
5156 receiving specific incorrect SSL/TLS records once record payload
5157 protection is active. (CVE-2010-0740)
5158 [Bodo Moeller, Adam Langley <agl@chromium.org>]
5160 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
5161 could be crashed if the relevant tables were not present (e.g. chrooted).
5162 [Tomas Hoger <thoger@redhat.com>]
5164 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
5166 *) Always check bn_wexpand() return values for failure. (CVE-2009-3245)
5167 [Martin Olsson, Neel Mehta]
5169 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
5170 accommodate for stack sorting, always a write lock!).
5173 *) On some versions of WIN32 Heap32Next is very slow. This can cause
5174 excessive delays in the RAND_poll(): over a minute. As a workaround
5175 include a time check in the inner Heap32Next loop too.
5178 *) The code that handled flushing of data in SSL/TLS originally used the
5179 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
5180 the problem outlined in PR#1949. The fix suggested there however can
5181 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
5182 of Apache). So instead simplify the code to flush unconditionally.
5183 This should be fine since flushing with no data to flush is a no op.
5186 *) Handle TLS versions 2.0 and later properly and correctly use the
5187 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
5188 off ancient servers have a habit of sticking around for a while...
5191 *) Modify compression code so it frees up structures without using the
5192 ex_data callbacks. This works around a problem where some applications
5193 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
5194 restarting) then use compression (e.g. SSL with compression) later.
5195 This results in significant per-connection memory leaks and
5196 has caused some security issues including CVE-2008-1678 and
5200 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
5201 change when encrypting or decrypting.
5204 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
5205 connect and renegotiate with servers which do not support RI.
5206 Until RI is more widely deployed this option is enabled by default.
5209 *) Add "missing" ssl ctrls to clear options and mode.
5212 *) If client attempts to renegotiate and doesn't support RI respond with
5213 a no_renegotiation alert as required by RFC5746. Some renegotiating
5214 TLS clients will continue a connection gracefully when they receive
5215 the alert. Unfortunately OpenSSL mishandled this alert and would hang
5216 waiting for a server hello which it will never receive. Now we treat a
5217 received no_renegotiation alert as a fatal error. This is because
5218 applications requesting a renegotiation might well expect it to succeed
5219 and would have no code in place to handle the server denying it so the
5220 only safe thing to do is to terminate the connection.
5223 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
5224 peer supports secure renegotiation and 0 otherwise. Print out peer
5225 renegotiation support in s_client/s_server.
5228 *) Replace the highly broken and deprecated SPKAC certification method with
5229 the updated NID creation version. This should correctly handle UTF8.
5232 *) Implement RFC5746. Re-enable renegotiation but require the extension
5233 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
5234 turns out to be a bad idea. It has been replaced by
5235 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
5236 SSL_CTX_set_options(). This is really not recommended unless you
5237 know what you are doing.
5238 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
5240 *) Fixes to stateless session resumption handling. Use initial_ctx when
5241 issuing and attempting to decrypt tickets in case it has changed during
5242 servername handling. Use a non-zero length session ID when attempting
5243 stateless session resumption: this makes it possible to determine if
5244 a resumption has occurred immediately after receiving server hello
5245 (several places in OpenSSL subtly assume this) instead of later in
5249 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
5250 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
5251 fixes for a few places where the return code is not checked
5253 [Julia Lawall <julia@diku.dk>]
5255 *) Add --strict-warnings option to Configure script to include devteam
5256 warnings in other configurations.
5259 *) Add support for --libdir option and LIBDIR variable in makefiles. This
5260 makes it possible to install openssl libraries in locations which
5261 have names other than "lib", for example "/usr/lib64" which some
5263 [Steve Henson, based on patch from Jeremy Utley]
5265 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
5266 X690 8.9.12 and can produce some misleading textual output of OIDs.
5267 [Steve Henson, reported by Dan Kaminsky]
5269 *) Delete MD2 from algorithm tables. This follows the recommendation in
5270 several standards that it is not used in new applications due to
5271 several cryptographic weaknesses. For binary compatibility reasons
5272 the MD2 API is still compiled in by default.
5275 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
5279 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
5280 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
5282 [Guenter <lists@gknw.net>]
5284 *) Fix the server certificate chain building code to use X509_verify_cert(),
5285 it used to have an ad-hoc builder which was unable to cope with anything
5286 other than a simple chain.
5287 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
5289 *) Don't check self signed certificate signatures in X509_verify_cert()
5290 by default (a flag can override this): it just wastes time without
5291 adding any security. As a useful side effect self signed root CAs
5292 with non-FIPS digests are now usable in FIPS mode.
5295 *) In dtls1_process_out_of_seq_message() the check if the current message
5296 is already buffered was missing. For every new message was memory
5297 allocated, allowing an attacker to perform an denial of service attack
5298 with sending out of seq handshake messages until there is no memory
5299 left. Additionally every future message was buffered, even if the
5300 sequence number made no sense and would be part of another handshake.
5301 So only messages with sequence numbers less than 10 in advance will be
5302 buffered. (CVE-2009-1378)
5303 [Robin Seggelmann, discovered by Daniel Mentz]
5305 *) Records are buffered if they arrive with a future epoch to be
5306 processed after finishing the corresponding handshake. There is
5307 currently no limitation to this buffer allowing an attacker to perform
5308 a DOS attack with sending records with future epochs until there is no
5309 memory left. This patch adds the pqueue_size() function to determine
5310 the size of a buffer and limits the record buffer to 100 entries.
5312 [Robin Seggelmann, discovered by Daniel Mentz]
5314 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
5315 parent structure is freed. (CVE-2009-1379)
5318 *) Handle non-blocking I/O properly in SSL_shutdown() call.
5319 [Darryl Miles <darryl-mailinglists@netbauds.net>]
5322 [Ilya O. <vrghost@gmail.com>]
5324 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
5326 *) Disable renegotiation completely - this fixes a severe security
5327 problem (CVE-2009-3555) at the cost of breaking all
5328 renegotiation. Renegotiation can be re-enabled by setting
5329 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
5330 run-time. This is really not recommended unless you know what
5334 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
5336 *) Don't set val to NULL when freeing up structures, it is freed up by
5337 underlying code. If sizeof(void *) > sizeof(long) this can result in
5338 zeroing past the valid field. (CVE-2009-0789)
5339 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
5341 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
5342 checked correctly. This would allow some invalid signed attributes to
5343 appear to verify correctly. (CVE-2009-0591)
5344 [Ivan Nestlerode <inestlerode@us.ibm.com>]
5346 *) Reject UniversalString and BMPString types with invalid lengths. This
5347 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
5348 a legal length. (CVE-2009-0590)
5351 *) Set S/MIME signing as the default purpose rather than setting it
5352 unconditionally. This allows applications to override it at the store
5356 *) Permit restricted recursion of ASN1 strings. This is needed in practice
5357 to handle some structures.
5360 *) Improve efficiency of mem_gets: don't search whole buffer each time
5362 [Jeremy Shapiro <jnshapir@us.ibm.com>]
5364 *) New -hex option for openssl rand.
5367 *) Print out UTF8String and NumericString when parsing ASN1.
5370 *) Support NumericString type for name components.
5373 *) Allow CC in the environment to override the automatically chosen
5374 compiler. Note that nothing is done to ensure flags work with the
5378 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
5380 *) Properly check EVP_VerifyFinal() and similar return values
5382 [Ben Laurie, Bodo Moeller, Google Security Team]
5384 *) Enable TLS extensions by default.
5387 *) Allow the CHIL engine to be loaded, whether the application is
5388 multithreaded or not. (This does not release the developer from the
5389 obligation to set up the dynamic locking callbacks.)
5390 [Sander Temme <sander@temme.net>]
5392 *) Use correct exit code if there is an error in dgst command.
5393 [Steve Henson; problem pointed out by Roland Dirlewanger]
5395 *) Tweak Configure so that you need to say "experimental-jpake" to enable
5396 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
5399 *) Add experimental JPAKE support, including demo authentication in
5400 s_client and s_server.
5403 *) Set the comparison function in v3_addr_canonize().
5404 [Rob Austein <sra@hactrn.net>]
5406 *) Add support for XMPP STARTTLS in s_client.
5407 [Philip Paeps <philip@freebsd.org>]
5409 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
5410 to ensure that even with this option, only ciphersuites in the
5411 server's preference list will be accepted. (Note that the option
5412 applies only when resuming a session, so the earlier behavior was
5413 just about the algorithm choice for symmetric cryptography.)
5416 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
5418 *) Fix NULL pointer dereference if a DTLS server received
5419 ChangeCipherSpec as first record (CVE-2009-1386).
5422 *) Fix a state transition in s3_srvr.c and d1_srvr.c
5423 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
5426 *) The fix in 0.9.8c that supposedly got rid of unsafe
5427 double-checked locking was incomplete for RSA blinding,
5428 addressing just one layer of what turns out to have been
5429 doubly unsafe triple-checked locking.
5431 So now fix this for real by retiring the MONT_HELPER macro
5432 in crypto/rsa/rsa_eay.c.
5434 [Bodo Moeller; problem pointed out by Marius Schilder]
5436 *) Various precautionary measures:
5438 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
5440 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
5441 (NB: This would require knowledge of the secret session ticket key
5442 to exploit, in which case you'd be SOL either way.)
5444 - Change bn_nist.c so that it will properly handle input BIGNUMs
5445 outside the expected range.
5447 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
5450 [Neel Mehta, Bodo Moeller]
5452 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
5453 the load fails. Useful for distros.
5454 [Ben Laurie and the FreeBSD team]
5456 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
5459 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
5462 *) Expand ENGINE to support engine supplied SSL client certificate functions.
5464 This work was sponsored by Logica.
5467 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
5468 keystores. Support for SSL/TLS client authentication too.
5469 Not compiled unless enable-capieng specified to Configure.
5471 This work was sponsored by Logica.
5474 *) Fix bug in X509_ATTRIBUTE creation: don't set attribute using
5475 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
5476 attribute creation routines such as certificate requests and PKCS#12
5480 Changes between 0.9.8g and 0.9.8h [28 May 2008]
5482 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
5483 handshake which could lead to a client crash as found using the
5484 Codenomicon TLS test suite (CVE-2008-1672)
5485 [Steve Henson, Mark Cox]
5487 *) Fix double free in TLS server name extensions which could lead to
5488 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
5491 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
5493 Clear the error queue to ensure that error entries left from
5494 older function calls do not interfere with the correct operation.
5495 [Lutz Jaenicke, Erik de Castro Lopo]
5497 *) Remove root CA certificates of commercial CAs:
5499 The OpenSSL project does not recommend any specific CA and does not
5500 have any policy with respect to including or excluding any CA.
5501 Therefore it does not make any sense to ship an arbitrary selection
5502 of root CA certificates with the OpenSSL software.
5505 *) RSA OAEP patches to fix two separate invalid memory reads.
5506 The first one involves inputs when 'lzero' is greater than
5507 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
5508 before the beginning of from). The second one involves inputs where
5509 the 'db' section contains nothing but zeroes (there is a one-byte
5510 invalid read after the end of 'db').
5511 [Ivan Nestlerode <inestlerode@us.ibm.com>]
5513 *) Partial backport from 0.9.9-dev:
5515 Introduce bn_mul_mont (dedicated Montgomery multiplication
5516 procedure) as a candidate for BIGNUM assembler implementation.
5517 While 0.9.9-dev uses assembler for various architectures, only
5518 x86_64 is available by default here in the 0.9.8 branch, and
5519 32-bit x86 is available through a compile-time setting.
5521 To try the 32-bit x86 assembler implementation, use Configure
5522 option "enable-montasm" (which exists only for this backport).
5524 As "enable-montasm" for 32-bit x86 disclaims code stability
5525 anyway, in this constellation we activate additional code
5526 backported from 0.9.9-dev for further performance improvements,
5527 namely BN_from_montgomery_word. (To enable this otherwise,
5528 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
5530 [Andy Polyakov (backport partially by Bodo Moeller)]
5532 *) Add TLS session ticket callback. This allows an application to set
5533 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
5534 values. This is useful for key rollover for example where several key
5535 sets may exist with different names.
5538 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
5539 This was broken until now in 0.9.8 releases, such that the only way
5540 a registered ENGINE could be used (assuming it initialises
5541 successfully on the host) was to explicitly set it as the default
5542 for the relevant algorithms. This is in contradiction with 0.9.7
5543 behaviour and the documentation. With this fix, when an ENGINE is
5544 registered into a given algorithm's table of implementations, the
5545 'uptodate' flag is reset so that auto-discovery will be used next
5546 time a new context for that algorithm attempts to select an
5548 [Ian Lister (tweaked by Geoff Thorpe)]
5550 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
5551 implementation in the following ways:
5553 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
5556 Lack of BER streaming support means one pass streaming processing is
5557 only supported if data is detached: setting the streaming flag is
5558 ignored for embedded content.
5560 CMS support is disabled by default and must be explicitly enabled
5561 with the enable-cms configuration option.
5564 *) Update the GMP engine glue to do direct copies between BIGNUM and
5565 mpz_t when openssl and GMP use the same limb size. Otherwise the
5566 existing "conversion via a text string export" trick is still used.
5567 [Paul Sheer <paulsheer@gmail.com>]
5569 *) Zlib compression BIO. This is a filter BIO which compressed and
5570 uncompresses any data passed through it.
5573 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
5574 RFC3394 compatible AES key wrapping.
5577 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
5578 sets string data without copying. X509_ALGOR_set0() and
5579 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
5580 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
5581 from an X509_ATTRIBUTE structure optionally checking it occurs only
5582 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
5586 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
5587 to get the expected BN_FLG_CONSTTIME behavior.
5588 [Bodo Moeller (Google)]
5592 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
5593 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
5594 - added some more tests to do_tests.pl
5595 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
5596 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
5597 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
5598 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
5599 - various changes to netware.pl to enable gcc-cross builds on Win32
5601 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
5602 - various changes to fix missing prototype warnings
5603 - fixed x86nasm.pl to create correct asm files for NASM COFF output
5604 - added AES, WHIRLPOOL and CPUID assembler code to build files
5605 - added missing AES assembler make rules to mk1mf.pl
5606 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
5607 [Guenter Knauf <eflash@gmx.net>]
5609 *) Implement certificate status request TLS extension defined in RFC3546.
5610 A client can set the appropriate parameters and receive the encoded
5611 OCSP response via a callback. A server can query the supplied parameters
5612 and set the encoded OCSP response in the callback. Add simplified examples
5613 to s_client and s_server.
5616 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
5618 *) Fix various bugs:
5619 + Binary incompatibility of ssl_ctx_st structure
5620 + DTLS interoperation with non-compliant servers
5621 + Don't call get_session_cb() without proposed session
5622 + Fix ia64 assembler code
5623 [Andy Polyakov, Steve Henson]
5625 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
5627 *) DTLS Handshake overhaul. There were longstanding issues with
5628 OpenSSL DTLS implementation, which were making it impossible for
5629 RFC 4347 compliant client to communicate with OpenSSL server.
5630 Unfortunately just fixing these incompatibilities would "cut off"
5631 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
5632 server keeps tolerating non RFC compliant syntax. The opposite is
5633 not true, 0.9.8f client can not communicate with earlier server.
5634 This update even addresses CVE-2007-4995.
5637 *) Changes to avoid need for function casts in OpenSSL: some compilers
5638 (gcc 4.2 and later) reject their use.
5639 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
5642 *) Add RFC4507 support to OpenSSL. This includes the corrections in
5643 RFC4507bis. The encrypted ticket format is an encrypted encoded
5644 SSL_SESSION structure, that way new session features are automatically
5647 If a client application caches session in an SSL_SESSION structure
5648 support is transparent because tickets are now stored in the encoded
5651 The SSL_CTX structure automatically generates keys for ticket
5652 protection in servers so again support should be possible
5653 with no application modification.
5655 If a client or server wishes to disable RFC4507 support then the option
5656 SSL_OP_NO_TICKET can be set.
5658 Add a TLS extension debugging callback to allow the contents of any client
5659 or server extensions to be examined.
5661 This work was sponsored by Google.
5664 *) Add initial support for TLS extensions, specifically for the server_name
5665 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
5666 have new members for a host name. The SSL data structure has an
5667 additional member SSL_CTX *initial_ctx so that new sessions can be
5668 stored in that context to allow for session resumption, even after the
5669 SSL has been switched to a new SSL_CTX in reaction to a client's
5670 server_name extension.
5672 New functions (subject to change):
5674 SSL_get_servername()
5675 SSL_get_servername_type()
5678 New CTRL codes and macros (subject to change):
5680 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
5681 - SSL_CTX_set_tlsext_servername_callback()
5682 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
5683 - SSL_CTX_set_tlsext_servername_arg()
5684 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
5686 openssl s_client has a new '-servername ...' option.
5688 openssl s_server has new options '-servername_host ...', '-cert2 ...',
5689 '-key2 ...', '-servername_fatal' (subject to change). This allows
5690 testing the HostName extension for a specific single host name ('-cert'
5691 and '-key' remain fallbacks for handshakes without HostName
5692 negotiation). If the unrecognized_name alert has to be sent, this by
5693 default is a warning; it becomes fatal with the '-servername_fatal'
5696 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
5698 *) Add AES and SSE2 assembly language support to VC++ build.
5701 *) Mitigate attack on final subtraction in Montgomery reduction.
5704 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
5705 (which previously caused an internal error).
5708 *) Squeeze another 10% out of IGE mode when in != out.
5711 *) AES IGE mode speedup.
5712 [Dean Gaudet (Google)]
5714 *) Add the Korean symmetric 128-bit cipher SEED (see
5715 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
5716 add SEED ciphersuites from RFC 4162:
5718 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
5719 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
5720 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
5721 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
5723 To minimize changes between patchlevels in the OpenSSL 0.9.8
5724 series, SEED remains excluded from compilation unless OpenSSL
5725 is configured with 'enable-seed'.
5726 [KISA, Bodo Moeller]
5728 *) Mitigate branch prediction attacks, which can be practical if a
5729 single processor is shared, allowing a spy process to extract
5730 information. For detailed background information, see
5731 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
5732 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
5733 and Necessary Software Countermeasures"). The core of the change
5734 are new versions BN_div_no_branch() and
5735 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
5736 respectively, which are slower, but avoid the security-relevant
5737 conditional branches. These are automatically called by BN_div()
5738 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
5739 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
5740 remove a conditional branch.
5742 BN_FLG_CONSTTIME is the new name for the previous
5743 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
5744 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
5745 in the exponent causes BN_mod_exp_mont() to use the alternative
5746 implementation in BN_mod_exp_mont_consttime().) The old name
5747 remains as a deprecated alias.
5749 Similarly, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
5750 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
5751 constant-time implementations for more than just exponentiation.
5752 Here too the old name is kept as a deprecated alias.
5754 BN_BLINDING_new() will now use BN_dup() for the modulus so that
5755 the BN_BLINDING structure gets an independent copy of the
5756 modulus. This means that the previous "BIGNUM *m" argument to
5757 BN_BLINDING_new() and to BN_BLINDING_create_param() now
5758 essentially becomes "const BIGNUM *m", although we can't actually
5759 change this in the header file before 0.9.9. It allows
5760 RSA_setup_blinding() to use BN_with_flags() on the modulus to
5761 enable BN_FLG_CONSTTIME.
5763 [Matthew D Wood (Intel Corp)]
5765 *) In the SSL/TLS server implementation, be strict about session ID
5766 context matching (which matters if an application uses a single
5767 external cache for different purposes). Previously,
5768 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
5769 set. This did ensure strict client verification, but meant that,
5770 with applications using a single external cache for quite
5771 different requirements, clients could circumvent ciphersuite
5772 restrictions for a given session ID context by starting a session
5773 in a different context.
5776 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
5777 a ciphersuite string such as "DEFAULT:RSA" cannot enable
5778 authentication-only ciphersuites.
5781 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
5782 not complete and could lead to a possible single byte overflow
5783 (CVE-2007-5135) [Ben Laurie]
5785 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
5787 *) Since AES128 and AES256 (and similarly Camellia128 and
5788 Camellia256) share a single mask bit in the logic of
5789 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
5790 kludge to work properly if AES128 is available and AES256 isn't
5791 (or if Camellia128 is available and Camellia256 isn't).
5794 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
5795 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
5796 When a point or a seed is encoded in a BIT STRING, we need to
5797 prevent the removal of trailing zero bits to get the proper DER
5798 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
5799 of a NamedBitList, for which trailing 0 bits need to be removed.)
5802 *) Have SSL/TLS server implementation tolerate "mismatched" record
5803 protocol version while receiving ClientHello even if the
5804 ClientHello is fragmented. (The server can't insist on the
5805 particular protocol version it has chosen before the ServerHello
5806 message has informed the client about his choice.)
5809 *) Add RFC 3779 support.
5810 [Rob Austein for ARIN, Ben Laurie]
5812 *) Load error codes if they are not already present instead of using a
5813 static variable. This allows them to be cleanly unloaded and reloaded.
5814 Improve header file function name parsing.
5817 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
5818 or CAPABILITY handshake as required by RFCs.
5821 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
5823 *) Introduce limits to prevent malicious keys being able to
5824 cause a denial of service. (CVE-2006-2940)
5825 [Steve Henson, Bodo Moeller]
5827 *) Fix ASN.1 parsing of certain invalid structures that can result
5828 in a denial of service. (CVE-2006-2937) [Steve Henson]
5830 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
5831 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
5833 *) Fix SSL client code which could crash if connecting to a
5834 malicious SSLv2 server. (CVE-2006-4343)
5835 [Tavis Ormandy and Will Drewry, Google Security Team]
5837 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
5838 match only those. Before that, "AES256-SHA" would be interpreted
5839 as a pattern and match "AES128-SHA" too (since AES128-SHA got
5840 the same strength classification in 0.9.7h) as we currently only
5841 have a single AES bit in the ciphersuite description bitmap.
5842 That change, however, also applied to ciphersuite strings such as
5843 "RC4-MD5" that intentionally matched multiple ciphersuites --
5844 namely, SSL 2.0 ciphersuites in addition to the more common ones
5845 from SSL 3.0/TLS 1.0.
5847 So we change the selection algorithm again: Naming an explicit
5848 ciphersuite selects this one ciphersuite, and any other similar
5849 ciphersuite (same bitmap) from *other* protocol versions.
5850 Thus, "RC4-MD5" again will properly select both the SSL 2.0
5851 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
5853 Since SSL 2.0 does not have any ciphersuites for which the
5854 128/256 bit distinction would be relevant, this works for now.
5855 The proper fix will be to use different bits for AES128 and
5856 AES256, which would have avoided the problems from the beginning;
5857 however, bits are scarce, so we can only do this in a new release
5858 (not just a patchlevel) when we can change the SSL_CIPHER
5859 definition to split the single 'unsigned long mask' bitmap into
5860 multiple values to extend the available space.
5864 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
5866 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
5867 (CVE-2006-4339) [Ben Laurie and Google Security Team]
5869 *) Add AES IGE and biIGE modes.
5872 *) Change the Unix randomness entropy gathering to use poll() when
5873 possible instead of select(), since the latter has some
5874 undesirable limitations.
5875 [Darryl Miles via Richard Levitte and Bodo Moeller]
5877 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
5878 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
5879 cannot be implicitly activated as part of, e.g., the "AES" alias.
5880 However, please upgrade to OpenSSL 0.9.9[-dev] for
5881 non-experimental use of the ECC ciphersuites to get TLS extension
5882 support, which is required for curve and point format negotiation
5883 to avoid potential handshake problems.
5886 *) Disable rogue ciphersuites:
5888 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
5889 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
5890 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
5892 The latter two were purportedly from
5893 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
5896 Also deactivate the remaining ciphersuites from
5897 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
5898 unofficial, and the ID has long expired.
5901 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
5902 dual-core machines) and other potential thread-safety issues.
5905 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
5906 versions), which is now available for royalty-free use
5907 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
5908 Also, add Camellia TLS ciphersuites from RFC 4132.
5910 To minimize changes between patchlevels in the OpenSSL 0.9.8
5911 series, Camellia remains excluded from compilation unless OpenSSL
5912 is configured with 'enable-camellia'.
5915 *) Disable the padding bug check when compression is in use. The padding
5916 bug check assumes the first packet is of even length, this is not
5917 necessarily true if compression is enabled and can result in false
5918 positives causing handshake failure. The actual bug test is ancient
5919 code so it is hoped that implementations will either have fixed it by
5920 now or any which still have the bug do not support compression.
5923 Changes between 0.9.8a and 0.9.8b [04 May 2006]
5925 *) When applying a cipher rule check to see if string match is an explicit
5926 cipher suite and only match that one cipher suite if it is.
5929 *) Link in manifests for VC++ if needed.
5930 [Austin Ziegler <halostatue@gmail.com>]
5932 *) Update support for ECC-based TLS ciphersuites according to
5933 draft-ietf-tls-ecc-12.txt with proposed changes (but without
5934 TLS extensions, which are supported starting with the 0.9.9
5935 branch, not in the OpenSSL 0.9.8 branch).
5938 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
5939 opaque EVP_CIPHER_CTX handling.
5942 *) Fixes and enhancements to zlib compression code. We now only use
5943 "zlib1.dll" and use the default __cdecl calling convention on Win32
5944 to conform with the standards mentioned here:
5945 http://www.zlib.net/DLL_FAQ.txt
5946 Static zlib linking now works on Windows and the new --with-zlib-include
5947 --with-zlib-lib options to Configure can be used to supply the location
5948 of the headers and library. Gracefully handle case where zlib library
5952 *) Several fixes and enhancements to the OID generation code. The old code
5953 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
5954 handle numbers larger than ULONG_MAX, truncated printing and had a
5955 non standard OBJ_obj2txt() behaviour.
5958 *) Add support for building of engines under engine/ as shared libraries
5959 under VC++ build system.
5962 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
5963 Hopefully, we will not see any false combination of paths any more.
5966 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
5968 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
5969 (part of SSL_OP_ALL). This option used to disable the
5970 countermeasure against man-in-the-middle protocol-version
5971 rollback in the SSL 2.0 server implementation, which is a bad
5972 idea. (CVE-2005-2969)
5974 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
5975 for Information Security, National Institute of Advanced Industrial
5976 Science and Technology [AIST], Japan)]
5978 *) Add two function to clear and return the verify parameter flags.
5981 *) Keep cipherlists sorted in the source instead of sorting them at
5982 runtime, thus removing the need for a lock.
5985 *) Avoid some small subgroup attacks in Diffie-Hellman.
5986 [Nick Mathewson and Ben Laurie]
5988 *) Add functions for well-known primes.
5991 *) Extended Windows CE support.
5992 [Satoshi Nakamura and Andy Polyakov]
5994 *) Initialize SSL_METHOD structures at compile time instead of during
5995 runtime, thus removing the need for a lock.
5998 *) Make PKCS7_decrypt() work even if no certificate is supplied by
5999 attempting to decrypt each encrypted key in turn. Add support to
6003 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
6005 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
6008 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
6011 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
6012 key into the same file any more.
6015 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
6018 *) Add -utf8 command line and config file option to 'ca'.
6019 [Stefan <stf@udoma.org]
6021 *) Removed the macro des_crypt(), as it seems to conflict with some
6022 libraries. Use DES_crypt().
6025 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
6026 involves renaming the source and generated shared-libs for
6027 both. The engines will accept the corrected or legacy ids
6028 ('ncipher' and '4758_cca' respectively) when binding. NB,
6029 this only applies when building 'shared'.
6030 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
6032 *) Add attribute functions to EVP_PKEY structure. Modify
6033 PKCS12_create() to recognize a CSP name attribute and
6034 use it. Make -CSP option work again in pkcs12 utility.
6037 *) Add new functionality to the bn blinding code:
6038 - automatic re-creation of the BN_BLINDING parameters after
6039 a fixed number of uses (currently 32)
6040 - add new function for parameter creation
6041 - introduce flags to control the update behaviour of the
6042 BN_BLINDING parameters
6043 - hide BN_BLINDING structure
6044 Add a second BN_BLINDING slot to the RSA structure to improve
6045 performance when a single RSA object is shared among several
6049 *) Add support for DTLS.
6050 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
6052 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
6053 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
6056 *) Remove buggy and incomplete DH cert support from
6057 ssl/ssl_rsa.c and ssl/s3_both.c
6060 *) Use SHA-1 instead of MD5 as the default digest algorithm for
6061 the apps/openssl applications.
6064 *) Compile clean with "-Wall -Wmissing-prototypes
6065 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
6066 DEBUG_SAFESTACK must also be set.
6069 *) Change ./Configure so that certain algorithms can be disabled by default.
6070 The new counterpiece to "no-xxx" is "enable-xxx".
6072 The patented RC5 and MDC2 algorithms will now be disabled unless
6073 "enable-rc5" and "enable-mdc2", respectively, are specified.
6075 (IDEA remains enabled despite being patented. This is because IDEA
6076 is frequently required for interoperability, and there is no license
6077 fee for non-commercial use. As before, "no-idea" can be used to
6078 avoid this algorithm.)
6082 *) Add processing of proxy certificates (see RFC 3820). This work was
6083 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
6084 EGEE (Enabling Grids for E-science in Europe).
6087 *) RC4 performance overhaul on modern architectures/implementations, such
6088 as Intel P4, IA-64 and AMD64.
6091 *) New utility extract-section.pl. This can be used specify an alternative
6092 section number in a pod file instead of having to treat each file as
6093 a separate case in Makefile. This can be done by adding two lines to the
6096 =for comment openssl_section:XXX
6098 The blank line is mandatory.
6102 *) New arguments -certform, -keyform and -pass for s_client and s_server
6103 to allow alternative format key and certificate files and passphrase
6107 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
6108 update associated structures and add various utility functions.
6110 Add new policy related verify parameters, include policy checking in
6111 standard verify code. Enhance 'smime' application with extra parameters
6112 to support policy checking and print out.
6115 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
6116 Nehemiah processors. These extensions support AES encryption in hardware
6117 as well as RNG (though RNG support is currently disabled).
6118 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
6120 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
6123 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
6124 [Andy Polyakov and a number of other people]
6126 *) Improved PowerPC platform support. Most notably BIGNUM assembler
6127 implementation contributed by IBM.
6128 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
6130 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
6131 exponent rather than 'unsigned long'. There is a corresponding change to
6132 the new 'rsa_keygen' element of the RSA_METHOD structure.
6133 [Jelte Jansen, Geoff Thorpe]
6135 *) Functionality for creating the initial serial number file is now
6136 moved from CA.pl to the 'ca' utility with a new option -create_serial.
6138 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
6139 number file to 1, which is bound to cause problems. To avoid
6140 the problems while respecting compatibility between different 0.9.7
6141 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
6142 CA.pl for serial number initialization. With the new release 0.9.8,
6143 we can fix the problem directly in the 'ca' utility.)
6146 *) Reduced header interdependencies by declaring more opaque objects in
6147 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
6148 give fewer recursive includes, which could break lazy source code - so
6149 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
6150 developers should define this symbol when building and using openssl to
6151 ensure they track the recommended behaviour, interfaces, [etc], but
6152 backwards-compatible behaviour prevails when this isn't defined.
6155 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
6158 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
6159 This will generate a random key of the appropriate length based on the
6160 cipher context. The EVP_CIPHER can provide its own random key generation
6161 routine to support keys of a specific form. This is used in the des and
6162 3des routines to generate a key of the correct parity. Update S/MIME
6163 code to use new functions and hence generate correct parity DES keys.
6164 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
6165 valid (weak or incorrect parity).
6168 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
6169 as looking them up. This is useful when the verified structure may contain
6170 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
6171 present unless the new PKCS7_NO_CRL flag is asserted.
6174 *) Extend ASN1 oid configuration module. It now additionally accepts the
6177 shortName = some long name, 1.2.3.4
6180 *) Reimplemented the BN_CTX implementation. There is now no more static
6181 limitation on the number of variables it can handle nor the depth of the
6182 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
6183 information can now expand as required, and rather than having a single
6184 static array of bignums, BN_CTX now uses a linked-list of such arrays
6185 allowing it to expand on demand whilst maintaining the usefulness of
6186 BN_CTX's "bundling".
6189 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
6190 to allow all RSA operations to function using a single BN_CTX.
6193 *) Preliminary support for certificate policy evaluation and checking. This
6194 is initially intended to pass the tests outlined in "Conformance Testing
6195 of Relying Party Client Certificate Path Processing Logic" v1.07.
6198 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
6199 remained unused and not that useful. A variety of other little bignum
6200 tweaks and fixes have also been made continuing on from the audit (see
6204 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
6205 associated ASN1, EVP and SSL functions and old ASN1 macros.
6208 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
6209 and this should never fail. So the return value from the use of
6210 BN_set_word() (which can fail due to needless expansion) is now deprecated;
6211 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
6214 *) BN_CTX_get() should return zero-valued bignums, providing the same
6215 initialised value as BN_new().
6216 [Geoff Thorpe, suggested by Ulf Möller]
6218 *) Support for inhibitAnyPolicy certificate extension.
6221 *) An audit of the BIGNUM code is underway, for which debugging code is
6222 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
6223 is considered valid when processing BIGNUMs, and causes execution to
6224 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
6225 further steps are taken to deliberately pollute unused data in BIGNUM
6226 structures to try and expose faulty code further on. For now, openssl will
6227 (in its default mode of operation) continue to tolerate the inconsistent
6228 forms that it has tolerated in the past, but authors and packagers should
6229 consider trying openssl and their own applications when compiled with
6230 these debugging symbols defined. It will help highlight potential bugs in
6231 their own code, and will improve the test coverage for OpenSSL itself. At
6232 some point, these tighter rules will become openssl's default to improve
6233 maintainability, though the assert()s and other overheads will remain only
6234 in debugging configurations. See bn.h for more details.
6235 [Geoff Thorpe, Nils Larsch, Ulf Möller]
6237 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
6238 that can only be obtained through BN_CTX_new() (which implicitly
6239 initialises it). The presence of this function only made it possible
6240 to overwrite an existing structure (and cause memory leaks).
6243 *) Because of the callback-based approach for implementing LHASH as a
6244 template type, lh_insert() adds opaque objects to hash-tables and
6245 lh_doall() or lh_doall_arg() are typically used with a destructor callback
6246 to clean up those corresponding objects before destroying the hash table
6247 (and losing the object pointers). So some over-zealous constifications in
6248 LHASH have been relaxed so that lh_insert() does not take (nor store) the
6249 objects as "const" and the lh_doall[_arg] callback wrappers are not
6250 prototyped to have "const" restrictions on the object pointers they are
6251 given (and so aren't required to cast them away any more).
6254 *) The tmdiff.h API was so ugly and minimal that our own timing utility
6255 (speed) prefers to use its own implementation. The two implementations
6256 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
6257 its object type properly exposed (MS_TM) instead of casting to/from "char
6258 *". This may still change yet if someone realises MS_TM and "ms_time_***"
6259 aren't necessarily the greatest nomenclatures - but this is what was used
6260 internally to the implementation so I've used that for now.
6263 *) Ensure that deprecated functions do not get compiled when
6264 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
6265 the self-tests were still using deprecated key-generation functions so
6266 these have been updated also.
6269 *) Reorganise PKCS#7 code to separate the digest location functionality
6270 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
6271 New function PKCS7_set_digest() to set the digest type for PKCS#7
6272 digestedData type. Add additional code to correctly generate the
6273 digestedData type and add support for this type in PKCS7 initialization
6277 *) New function PKCS7_set0_type_other() this initializes a PKCS7
6278 structure of type "other".
6281 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
6282 sure the loop does correctly stop and breaking ("division by zero")
6283 modulus operations are not performed. The (pre-generated) prime
6284 table crypto/bn/bn_prime.h was already correct, but it could not be
6285 re-generated on some platforms because of the "division by zero"
6286 situation in the script.
6287 [Ralf S. Engelschall]
6289 *) Update support for ECC-based TLS ciphersuites according to
6290 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
6291 SHA-1 now is only used for "small" curves (where the
6292 representation of a field element takes up to 24 bytes); for
6293 larger curves, the field element resulting from ECDH is directly
6294 used as premaster secret.
6295 [Douglas Stebila (Sun Microsystems Laboratories)]
6297 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
6298 curve secp160r1 to the tests.
6299 [Douglas Stebila (Sun Microsystems Laboratories)]
6301 *) Add the possibility to load symbols globally with DSO.
6302 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
6304 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
6305 control of the error stack.
6308 *) Add support for STORE in ENGINE.
6311 *) Add the STORE type. The intention is to provide a common interface
6312 to certificate and key stores, be they simple file-based stores, or
6313 HSM-type store, or LDAP stores, or...
6314 NOTE: The code is currently UNTESTED and isn't really used anywhere.
6317 *) Add a generic structure called OPENSSL_ITEM. This can be used to
6318 pass a list of arguments to any function as well as provide a way
6319 for a function to pass data back to the caller.
6322 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
6323 works like BUF_strdup() but can be used to duplicate a portion of
6324 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
6328 *) Add the function sk_find_ex() which works like sk_find(), but will
6329 return an index to an element even if an exact match couldn't be
6330 found. The index is guaranteed to point at the element where the
6331 searched-for key would be inserted to preserve sorting order.
6334 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
6335 takes an extra flags argument for optional functionality. Currently,
6336 the following flags are defined:
6338 OBJ_BSEARCH_VALUE_ON_NOMATCH
6339 This one gets OBJ_bsearch_ex() to return a pointer to the first
6340 element where the comparing function returns a negative or zero
6343 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
6344 This one gets OBJ_bsearch_ex() to return a pointer to the first
6345 element where the comparing function returns zero. This is useful
6346 if there are more than one element where the comparing function
6350 *) Make it possible to create self-signed certificates with 'openssl ca'
6351 in such a way that the self-signed certificate becomes part of the
6352 CA database and uses the same mechanisms for serial number generation
6353 as all other certificate signing. The new flag '-selfsign' enables
6354 this functionality. Adapt CA.sh and CA.pl.in.
6357 *) Add functionality to check the public key of a certificate request
6358 against a given private. This is useful to check that a certificate
6359 request can be signed by that key (self-signing).
6362 *) Make it possible to have multiple active certificates with the same
6363 subject in the CA index file. This is done only if the keyword
6364 'unique_subject' is set to 'no' in the main CA section (default
6365 if 'CA_default') of the configuration file. The value is saved
6366 with the database itself in a separate index attribute file,
6367 named like the index file with '.attr' appended to the name.
6370 *) Generate multi-valued AVAs using '+' notation in config files for
6374 *) Support for nameConstraints certificate extension.
6377 *) Support for policyConstraints certificate extension.
6380 *) Support for policyMappings certificate extension.
6383 *) Make sure the default DSA_METHOD implementation only uses its
6384 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
6385 and change its own handlers to be NULL so as to remove unnecessary
6386 indirection. This lets alternative implementations fallback to the
6387 default implementation more easily.
6390 *) Support for directoryName in GeneralName related extensions
6394 *) Make it possible to link applications using Makefile.shared.
6395 Make that possible even when linking against static libraries!
6398 *) Support for single pass processing for S/MIME signing. This now
6399 means that S/MIME signing can be done from a pipe, in addition
6400 cleartext signing (multipart/signed type) is effectively streaming
6401 and the signed data does not need to be all held in memory.
6403 This is done with a new flag PKCS7_STREAM. When this flag is set
6404 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
6405 is done after the data is output (and digests calculated) in
6406 SMIME_write_PKCS7().
6409 *) Add full support for -rpath/-R, both in shared libraries and
6410 applications, at least on the platforms where it's known how
6414 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
6415 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
6416 will now compute a table of multiples of the generator that
6417 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
6418 faster (notably in the case of a single point multiplication,
6419 scalar * generator).
6420 [Nils Larsch, Bodo Moeller]
6422 *) IPv6 support for certificate extensions. The various extensions
6423 which use the IP:a.b.c.d can now take IPv6 addresses using the
6424 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
6428 *) Added an ENGINE that implements RSA by performing private key
6429 exponentiations with the GMP library. The conversions to and from
6430 GMP's mpz_t format aren't optimised nor are any montgomery forms
6431 cached, and on x86 it appears OpenSSL's own performance has caught up.
6432 However there are likely to be other architectures where GMP could
6433 provide a boost. This ENGINE is not built in by default, but it can be
6434 specified at Configure time and should be accompanied by the necessary
6435 linker additions, eg;
6436 ./config -DOPENSSL_USE_GMP -lgmp
6439 *) "openssl engine" will not display ENGINE/DSO load failure errors when
6440 testing availability of engines with "-t" - the old behaviour is
6441 produced by increasing the feature's verbosity with "-tt".
6444 *) ECDSA routines: under certain error conditions uninitialized BN objects
6445 could be freed. Solution: make sure initialization is performed early
6446 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
6450 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
6451 and DH_METHOD (eg. by ENGINE implementations) to override the normal
6452 software implementations. For DSA and DH, parameter generation can
6453 also be overridden by providing the appropriate method callbacks.
6456 *) Change the "progress" mechanism used in key-generation and
6457 primality testing to functions that take a new BN_GENCB pointer in
6458 place of callback/argument pairs. The new API functions have "_ex"
6459 postfixes and the older functions are reimplemented as wrappers for
6460 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
6461 declarations of the old functions to help (graceful) attempts to
6462 migrate to the new functions. Also, the new key-generation API
6463 functions operate on a caller-supplied key-structure and return
6464 success/failure rather than returning a key or NULL - this is to
6465 help make "keygen" another member function of RSA_METHOD etc.
6467 Example for using the new callback interface:
6469 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
6473 BN_GENCB_set(&my_cb, my_callback, my_arg);
6475 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
6476 /* For the meaning of a, b in calls to my_callback(), see the
6477 * documentation of the function that calls the callback.
6478 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
6479 * my_callback should return 1 if it wants BN_is_prime_ex()
6480 * to continue, or 0 to stop.
6485 *) Change the ZLIB compression method to be stateful, and make it
6486 available to TLS with the number defined in
6487 draft-ietf-tls-compression-04.txt.
6490 *) Add the ASN.1 structures and functions for CertificatePair, which
6491 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
6493 CertificatePair ::= SEQUENCE {
6494 forward [0] Certificate OPTIONAL,
6495 reverse [1] Certificate OPTIONAL,
6496 -- at least one of the pair shall be present -- }
6498 Also implement the PEM functions to read and write certificate
6499 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
6501 This needed to be defined, mostly for the sake of the LDAP
6502 attribute crossCertificatePair, but may prove useful elsewhere as
6506 *) Make it possible to inhibit symlinking of shared libraries in
6507 Makefile.shared, for Cygwin's sake.
6510 *) Extend the BIGNUM API by creating a function
6511 void BN_set_negative(BIGNUM *a, int neg);
6512 and a macro that behave like
6513 int BN_is_negative(const BIGNUM *a);
6515 to avoid the need to access 'a->neg' directly in applications.
6518 *) Implement fast modular reduction for pseudo-Mersenne primes
6519 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
6520 EC_GROUP_new_curve_GFp() will now automatically use this
6522 [Nils Larsch <nla@trustcenter.de>]
6524 *) Add new lock type (CRYPTO_LOCK_BN).
6527 *) Change the ENGINE framework to automatically load engines
6528 dynamically from specific directories unless they could be
6529 found to already be built in or loaded. Move all the
6530 current engines except for the cryptodev one to a new
6532 The engines in engines/ are built as shared libraries if
6533 the "shared" options was given to ./Configure or ./config.
6534 Otherwise, they are inserted in libcrypto.a.
6535 /usr/local/ssl/engines is the default directory for dynamic
6536 engines, but that can be overridden at configure time through
6537 the usual use of --prefix and/or --openssldir, and at run
6538 time with the environment variable OPENSSL_ENGINES.
6539 [Geoff Thorpe and Richard Levitte]
6541 *) Add Makefile.shared, a helper makefile to build shared
6542 libraries. Adapt Makefile.org.
6545 *) Add version info to Win32 DLLs.
6546 [Peter 'Luna' Runestig" <peter@runestig.com>]
6548 *) Add new 'medium level' PKCS#12 API. Certificates and keys
6549 can be added using this API to created arbitrary PKCS#12
6550 files while avoiding the low level API.
6552 New options to PKCS12_create(), key or cert can be NULL and
6553 will then be omitted from the output file. The encryption
6554 algorithm NIDs can be set to -1 for no encryption, the mac
6555 iteration count can be set to 0 to omit the mac.
6557 Enhance pkcs12 utility by making the -nokeys and -nocerts
6558 options work when creating a PKCS#12 file. New option -nomac
6559 to omit the mac, NONE can be set for an encryption algorithm.
6560 New code is modified to use the enhanced PKCS12_create()
6561 instead of the low level API.
6564 *) Extend ASN1 encoder to support indefinite length constructed
6565 encoding. This can output sequences tags and octet strings in
6566 this form. Modify pk7_asn1.c to support indefinite length
6567 encoding. This is experimental and needs additional code to
6568 be useful, such as an ASN1 bio and some enhanced streaming
6571 Extend template encode functionality so that tagging is passed
6572 down to the template encoder.
6575 *) Let 'openssl req' fail if an argument to '-newkey' is not
6576 recognized instead of using RSA as a default.
6579 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
6580 As these are not official, they are not included in "ALL";
6581 the "ECCdraft" ciphersuite group alias can be used to select them.
6582 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
6584 *) Add ECDH engine support.
6585 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
6587 *) Add ECDH in new directory crypto/ecdh/.
6588 [Douglas Stebila (Sun Microsystems Laboratories)]
6590 *) Let BN_rand_range() abort with an error after 100 iterations
6591 without success (which indicates a broken PRNG).
6594 *) Change BN_mod_sqrt() so that it verifies that the input value
6595 is really the square of the return value. (Previously,
6596 BN_mod_sqrt would show GIGO behaviour.)
6599 *) Add named elliptic curves over binary fields from X9.62, SECG,
6600 and WAP/WTLS; add OIDs that were still missing.
6602 [Sheueling Chang Shantz and Douglas Stebila
6603 (Sun Microsystems Laboratories)]
6605 *) Extend the EC library for elliptic curves over binary fields
6606 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
6609 EC_GF2m_simple_method
6613 EC_GROUP_new_curve_GF2m
6614 EC_GROUP_set_curve_GF2m
6615 EC_GROUP_get_curve_GF2m
6616 EC_POINT_set_affine_coordinates_GF2m
6617 EC_POINT_get_affine_coordinates_GF2m
6618 EC_POINT_set_compressed_coordinates_GF2m
6620 Point compression for binary fields is disabled by default for
6621 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
6624 As binary polynomials are represented as BIGNUMs, various members
6625 of the EC_GROUP and EC_POINT data structures can be shared
6626 between the implementations for prime fields and binary fields;
6627 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
6628 are essentially identical to their ..._GFp counterparts.
6629 (For simplicity, the '..._GFp' prefix has been dropped from
6630 various internal method names.)
6632 An internal 'field_div' method (similar to 'field_mul' and
6633 'field_sqr') has been added; this is used only for binary fields.
6635 [Sheueling Chang Shantz and Douglas Stebila
6636 (Sun Microsystems Laboratories)]
6638 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
6639 through methods ('mul', 'precompute_mult').
6641 The generic implementations (now internally called 'ec_wNAF_mul'
6642 and 'ec_wNAF_precomputed_mult') remain the default if these
6643 methods are undefined.
6645 [Sheueling Chang Shantz and Douglas Stebila
6646 (Sun Microsystems Laboratories)]
6648 *) New function EC_GROUP_get_degree, which is defined through
6649 EC_METHOD. For curves over prime fields, this returns the bit
6650 length of the modulus.
6652 [Sheueling Chang Shantz and Douglas Stebila
6653 (Sun Microsystems Laboratories)]
6655 *) New functions EC_GROUP_dup, EC_POINT_dup.
6656 (These simply call ..._new and ..._copy).
6658 [Sheueling Chang Shantz and Douglas Stebila
6659 (Sun Microsystems Laboratories)]
6661 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
6662 Polynomials are represented as BIGNUMs (where the sign bit is not
6663 used) in the following functions [macros]:
6666 BN_GF2m_sub [= BN_GF2m_add]
6667 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
6668 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
6669 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
6671 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
6672 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
6673 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
6674 BN_GF2m_cmp [= BN_ucmp]
6676 (Note that only the 'mod' functions are actually for fields GF(2^m).
6677 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
6679 For some functions, an the irreducible polynomial defining a
6680 field can be given as an 'unsigned int[]' with strictly
6681 decreasing elements giving the indices of those bits that are set;
6682 i.e., p[] represents the polynomial
6683 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
6685 p[0] > p[1] > ... > p[k] = 0.
6686 This applies to the following functions:
6691 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
6692 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
6694 BN_GF2m_mod_sqrt_arr
6695 BN_GF2m_mod_solve_quad_arr
6699 Conversion can be performed by the following functions:
6704 bntest.c has additional tests for binary polynomial arithmetic.
6706 Two implementations for BN_GF2m_mod_div() are available.
6707 The default algorithm simply uses BN_GF2m_mod_inv() and
6708 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
6709 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
6710 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
6712 [Sheueling Chang Shantz and Douglas Stebila
6713 (Sun Microsystems Laboratories)]
6715 *) Add new error code 'ERR_R_DISABLED' that can be used when some
6716 functionality is disabled at compile-time.
6717 [Douglas Stebila <douglas.stebila@sun.com>]
6719 *) Change default behaviour of 'openssl asn1parse' so that more
6720 information is visible when viewing, e.g., a certificate:
6722 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
6723 mode the content of non-printable OCTET STRINGs is output in a
6724 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
6725 avoid the appearance of a printable string.
6726 [Nils Larsch <nla@trustcenter.de>]
6728 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
6730 EC_GROUP_set_asn1_flag()
6731 EC_GROUP_get_asn1_flag()
6732 EC_GROUP_set_point_conversion_form()
6733 EC_GROUP_get_point_conversion_form()
6734 These control ASN1 encoding details:
6735 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
6736 has been set to OPENSSL_EC_NAMED_CURVE.
6737 - Points are encoded in uncompressed form by default; options for
6738 asn1_for are as for point2oct, namely
6739 POINT_CONVERSION_COMPRESSED
6740 POINT_CONVERSION_UNCOMPRESSED
6741 POINT_CONVERSION_HYBRID
6743 Also add 'seed' and 'seed_len' members to EC_GROUP with access
6746 EC_GROUP_get0_seed()
6747 EC_GROUP_get_seed_len()
6748 This is used only for ASN1 purposes (so far).
6749 [Nils Larsch <nla@trustcenter.de>]
6751 *) Add 'field_type' member to EC_METHOD, which holds the NID
6752 of the appropriate field type OID. The new function
6753 EC_METHOD_get_field_type() returns this value.
6754 [Nils Larsch <nla@trustcenter.de>]
6759 EC_POINT_point2hex()
6760 EC_POINT_hex2point()
6761 providing useful interfaces to EC_POINT_point2oct() and
6762 EC_POINT_oct2point().
6763 [Nils Larsch <nla@trustcenter.de>]
6765 *) Change internals of the EC library so that the functions
6766 EC_GROUP_set_generator()
6767 EC_GROUP_get_generator()
6768 EC_GROUP_get_order()
6769 EC_GROUP_get_cofactor()
6770 are implemented directly in crypto/ec/ec_lib.c and not dispatched
6771 to methods, which would lead to unnecessary code duplication when
6772 adding different types of curves.
6773 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
6775 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
6776 arithmetic, and such that modified wNAFs are generated
6777 (which avoid length expansion in many cases).
6780 *) Add a function EC_GROUP_check_discriminant() (defined via
6781 EC_METHOD) that verifies that the curve discriminant is non-zero.
6783 Add a function EC_GROUP_check() that makes some sanity tests
6784 on a EC_GROUP, its generator and order. This includes
6785 EC_GROUP_check_discriminant().
6786 [Nils Larsch <nla@trustcenter.de>]
6788 *) Add ECDSA in new directory crypto/ecdsa/.
6790 Add applications 'openssl ecparam' and 'openssl ecdsa'
6791 (these are based on 'openssl dsaparam' and 'openssl dsa').
6793 ECDSA support is also included in various other files across the
6794 library. Most notably,
6795 - 'openssl req' now has a '-newkey ecdsa:file' option;
6796 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
6797 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
6798 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
6799 them suitable for ECDSA where domain parameters must be
6800 extracted before the specific public key;
6801 - ECDSA engine support has been added.
6802 [Nils Larsch <nla@trustcenter.de>]
6804 *) Include some named elliptic curves, and add OIDs from X9.62,
6805 SECG, and WAP/WTLS. Each curve can be obtained from the new
6807 EC_GROUP_new_by_curve_name(),
6808 and the list of available named curves can be obtained with
6809 EC_get_builtin_curves().
6810 Also add a 'curve_name' member to EC_GROUP objects, which can be
6812 EC_GROUP_set_curve_name()
6813 EC_GROUP_get_curve_name()
6814 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
6816 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
6817 was actually never needed) and in BN_mul(). The removal in BN_mul()
6818 required a small change in bn_mul_part_recursive() and the addition
6819 of the functions bn_cmp_part_words(), bn_sub_part_words() and
6820 bn_add_part_words(), which do the same thing as bn_cmp_words(),
6821 bn_sub_words() and bn_add_words() except they take arrays with
6825 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
6827 *) Cleanse PEM buffers before freeing them since they may contain
6829 [Benjamin Bennett <ben@psc.edu>]
6831 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
6832 a ciphersuite string such as "DEFAULT:RSA" cannot enable
6833 authentication-only ciphersuites.
6836 *) Since AES128 and AES256 share a single mask bit in the logic of
6837 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
6838 kludge to work properly if AES128 is available and AES256 isn't.
6841 *) Expand security boundary to match 1.1.1 module.
6844 *) Remove redundant features: hash file source, editing of test vectors
6845 modify fipsld to use external fips_premain.c signature.
6848 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
6849 run algorithm test programs.
6852 *) Make algorithm test programs more tolerant of whitespace.
6855 *) Have SSL/TLS server implementation tolerate "mismatched" record
6856 protocol version while receiving ClientHello even if the
6857 ClientHello is fragmented. (The server can't insist on the
6858 particular protocol version it has chosen before the ServerHello
6859 message has informed the client about his choice.)
6862 *) Load error codes if they are not already present instead of using a
6863 static variable. This allows them to be cleanly unloaded and reloaded.
6866 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
6868 *) Introduce limits to prevent malicious keys being able to
6869 cause a denial of service. (CVE-2006-2940)
6870 [Steve Henson, Bodo Moeller]
6872 *) Fix ASN.1 parsing of certain invalid structures that can result
6873 in a denial of service. (CVE-2006-2937) [Steve Henson]
6875 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
6876 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
6878 *) Fix SSL client code which could crash if connecting to a
6879 malicious SSLv2 server. (CVE-2006-4343)
6880 [Tavis Ormandy and Will Drewry, Google Security Team]
6882 *) Change ciphersuite string processing so that an explicit
6883 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
6884 will no longer include "AES128-SHA"), and any other similar
6885 ciphersuite (same bitmap) from *other* protocol versions (so that
6886 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
6887 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
6888 changes from 0.9.8b and 0.9.8d.
6891 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
6893 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
6894 (CVE-2006-4339) [Ben Laurie and Google Security Team]
6896 *) Change the Unix randomness entropy gathering to use poll() when
6897 possible instead of select(), since the latter has some
6898 undesirable limitations.
6899 [Darryl Miles via Richard Levitte and Bodo Moeller]
6901 *) Disable rogue ciphersuites:
6903 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
6904 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
6905 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
6907 The latter two were purportedly from
6908 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
6911 Also deactivate the remaining ciphersuites from
6912 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
6913 unofficial, and the ID has long expired.
6916 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
6917 dual-core machines) and other potential thread-safety issues.
6920 Changes between 0.9.7i and 0.9.7j [04 May 2006]
6922 *) Adapt fipsld and the build system to link against the validated FIPS
6923 module in FIPS mode.
6926 *) Fixes for VC++ 2005 build under Windows.
6929 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
6930 from a Windows bash shell such as MSYS. It is autodetected from the
6931 "config" script when run from a VC++ environment. Modify standard VC++
6932 build to use fipscanister.o from the GNU make build.
6935 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
6937 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
6938 The value now differs depending on if you build for FIPS or not.
6939 BEWARE! A program linked with a shared FIPSed libcrypto can't be
6940 safely run with a non-FIPSed libcrypto, as it may crash because of
6941 the difference induced by this change.
6944 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
6946 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
6947 (part of SSL_OP_ALL). This option used to disable the
6948 countermeasure against man-in-the-middle protocol-version
6949 rollback in the SSL 2.0 server implementation, which is a bad
6950 idea. (CVE-2005-2969)
6952 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
6953 for Information Security, National Institute of Advanced Industrial
6954 Science and Technology [AIST], Japan)]
6956 *) Minimal support for X9.31 signatures and PSS padding modes. This is
6957 mainly for FIPS compliance and not fully integrated at this stage.
6960 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
6961 the exponentiation using a fixed-length exponent. (Otherwise,
6962 the information leaked through timing could expose the secret key
6963 after many signatures; cf. Bleichenbacher's attack on DSA with
6967 *) Make a new fixed-window mod_exp implementation the default for
6968 RSA, DSA, and DH private-key operations so that the sequence of
6969 squares and multiplies and the memory access pattern are
6970 independent of the particular secret key. This will mitigate
6971 cache-timing and potential related attacks.
6973 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
6974 and this is automatically used by BN_mod_exp_mont() if the new flag
6975 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
6976 will use this BN flag for private exponents unless the flag
6977 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
6978 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
6980 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
6982 *) Change the client implementation for SSLv23_method() and
6983 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
6984 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
6985 (Previously, the SSL 2.0 backwards compatible Client Hello
6986 message format would be used even with SSL_OP_NO_SSLv2.)
6989 *) Add support for smime-type MIME parameter in S/MIME messages which some
6993 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
6994 a threadsafe manner. Modify rsa code to use new function and add calls
6995 to dsa and dh code (which had race conditions before).
6998 *) Include the fixed error library code in the C error file definitions
6999 instead of fixing them up at runtime. This keeps the error code
7000 structures constant.
7003 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
7005 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
7008 *) Fixes for newer kerberos headers. NB: the casts are needed because
7009 the 'length' field is signed on one version and unsigned on another
7010 with no (?) obvious way to tell the difference, without these VC++
7011 complains. Also the "definition" of FAR (blank) is no longer included
7012 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
7013 some needed definitions.
7016 *) Undo Cygwin change.
7019 *) Added support for proxy certificates according to RFC 3820.
7020 Because they may be a security thread to unaware applications,
7021 they must be explicitly allowed in run-time. See
7022 docs/HOWTO/proxy_certificates.txt for further information.
7025 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
7027 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
7028 server and client random values. Previously
7029 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
7030 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
7032 This change has negligible security impact because:
7034 1. Server and client random values still have 24 bytes of pseudo random
7037 2. Server and client random values are sent in the clear in the initial
7040 3. The master secret is derived using the premaster secret (48 bytes in
7041 size for static RSA ciphersuites) as well as client server and random
7044 The OpenSSL team would like to thank the UK NISCC for bringing this issue
7047 [Stephen Henson, reported by UK NISCC]
7049 *) Use Windows randomness collection on Cygwin.
7052 *) Fix hang in EGD/PRNGD query when communication socket is closed
7053 prematurely by EGD/PRNGD.
7054 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
7056 *) Prompt for pass phrases when appropriate for PKCS12 input format.
7059 *) Back-port of selected performance improvements from development
7060 branch, as well as improved support for PowerPC platforms.
7063 *) Add lots of checks for memory allocation failure, error codes to indicate
7064 failure and freeing up memory if a failure occurs.
7065 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
7067 *) Add new -passin argument to dgst.
7070 *) Perform some character comparisons of different types in X509_NAME_cmp:
7071 this is needed for some certificates that re-encode DNs into UTF8Strings
7072 (in violation of RFC3280) and can't or won't issue name rollover
7076 *) Make an explicit check during certificate validation to see that
7077 the CA setting in each certificate on the chain is correct. As a
7078 side effect always do the following basic checks on extensions,
7079 not just when there's an associated purpose to the check:
7081 - if there is an unhandled critical extension (unless the user
7082 has chosen to ignore this fault)
7083 - if the path length has been exceeded (if one is set at all)
7084 - that certain extensions fit the associated purpose (if one has
7088 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
7090 *) Avoid a race condition when CRLs are checked in a multi threaded
7091 environment. This would happen due to the reordering of the revoked
7092 entries during signature checking and serial number lookup. Now the
7093 encoding is cached and the serial number sort performed under a lock.
7094 Add new STACK function sk_is_sorted().
7097 *) Add Delta CRL to the extension code.
7100 *) Various fixes to s3_pkt.c so alerts are sent properly.
7101 [David Holmes <d.holmes@f5.com>]
7103 *) Reduce the chances of duplicate issuer name and serial numbers (in
7104 violation of RFC3280) using the OpenSSL certificate creation utilities.
7105 This is done by creating a random 64 bit value for the initial serial
7106 number when a serial number file is created or when a self signed
7107 certificate is created using 'openssl req -x509'. The initial serial
7108 number file is created using 'openssl x509 -next_serial' in CA.pl
7109 rather than being initialized to 1.
7112 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
7114 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
7115 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
7116 [Joe Orton, Steve Henson]
7118 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
7120 [Joe Orton, Steve Henson]
7122 *) Make it possible to have multiple active certificates with the same
7123 subject in the CA index file. This is done only if the keyword
7124 'unique_subject' is set to 'no' in the main CA section (default
7125 if 'CA_default') of the configuration file. The value is saved
7126 with the database itself in a separate index attribute file,
7127 named like the index file with '.attr' appended to the name.
7130 *) X509 verify fixes. Disable broken certificate workarounds when
7131 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
7132 keyUsage extension present. Don't accept CRLs with unhandled critical
7133 extensions: since verify currently doesn't process CRL extensions this
7134 rejects a CRL with *any* critical extensions. Add new verify error codes
7138 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
7139 A clarification of RFC2560 will require the use of OCTET STRINGs and
7140 some implementations cannot handle the current raw format. Since OpenSSL
7141 copies and compares OCSP nonces as opaque blobs without any attempt at
7142 parsing them this should not create any compatibility issues.
7145 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
7146 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
7147 this HMAC (and other) operations are several times slower than OpenSSL
7151 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
7152 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
7154 *) Use the correct content when signing type "other".
7157 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
7159 *) Fix various bugs revealed by running the NISCC test suite:
7161 Stop out of bounds reads in the ASN1 code when presented with
7162 invalid tags (CVE-2003-0543 and CVE-2003-0544).
7164 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
7166 If verify callback ignores invalid public key errors don't try to check
7167 certificate signature with the NULL public key.
7171 *) New -ignore_err option in ocsp application to stop the server
7172 exiting on the first error in a request.
7175 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
7176 if the server requested one: as stated in TLS 1.0 and SSL 3.0
7180 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
7181 extra data after the compression methods not only for TLS 1.0
7182 but also for SSL 3.0 (as required by the specification).
7183 [Bodo Moeller; problem pointed out by Matthias Loepfe]
7185 *) Change X509_certificate_type() to mark the key as exported/exportable
7186 when it's 512 *bits* long, not 512 bytes.
7189 *) Change AES_cbc_encrypt() so it outputs exact multiple of
7190 blocks during encryption.
7193 *) Various fixes to base64 BIO and non blocking I/O. On write
7194 flushes were not handled properly if the BIO retried. On read
7195 data was not being buffered properly and had various logic bugs.
7196 This also affects blocking I/O when the data being decoded is a
7200 *) Various S/MIME bugfixes and compatibility changes:
7201 output correct application/pkcs7 MIME type if
7202 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
7203 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
7204 of files as .eml work). Correctly handle very long lines in MIME
7208 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
7210 *) Countermeasure against the Klima-Pokorny-Rosa extension of
7211 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
7212 a protocol version number mismatch like a decryption error
7213 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
7216 *) Turn on RSA blinding by default in the default implementation
7217 to avoid a timing attack. Applications that don't want it can call
7218 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
7219 They would be ill-advised to do so in most cases.
7220 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
7222 *) Change RSA blinding code so that it works when the PRNG is not
7223 seeded (in this case, the secret RSA exponent is abused as
7224 an unpredictable seed -- if it is not unpredictable, there
7225 is no point in blinding anyway). Make RSA blinding thread-safe
7226 by remembering the creator's thread ID in rsa->blinding and
7227 having all other threads use local one-time blinding factors
7228 (this requires more computation than sharing rsa->blinding, but
7229 avoids excessive locking; and if an RSA object is not shared
7230 between threads, blinding will still be very fast).
7233 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
7234 ENGINE as defaults for all supported algorithms irrespective of
7235 the 'flags' parameter. 'flags' is now honoured, so applications
7236 should make sure they are passing it correctly.
7239 *) Target "mingw" now allows native Windows code to be generated in
7240 the Cygwin environment as well as with the MinGW compiler.
7243 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
7245 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
7246 via timing by performing a MAC computation even if incorrect
7247 block cipher padding has been found. This is a countermeasure
7248 against active attacks where the attacker has to distinguish
7249 between bad padding and a MAC verification error. (CVE-2003-0078)
7251 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
7252 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
7253 Martin Vuagnoux (EPFL, Ilion)]
7255 *) Make the no-err option work as intended. The intention with no-err
7256 is not to have the whole error stack handling routines removed from
7257 libcrypto, it's only intended to remove all the function name and
7258 reason texts, thereby removing some of the footprint that may not
7259 be interesting if those errors aren't displayed anyway.
7261 NOTE: it's still possible for any application or module to have its
7262 own set of error texts inserted. The routines are there, just not
7263 used by default when no-err is given.
7266 *) Add support for FreeBSD on IA64.
7267 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
7269 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
7270 Kerberos function mit_des_cbc_cksum(). Before this change,
7271 the value returned by DES_cbc_cksum() was like the one from
7272 mit_des_cbc_cksum(), except the bytes were swapped.
7273 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
7275 *) Allow an application to disable the automatic SSL chain building.
7276 Before this a rather primitive chain build was always performed in
7277 ssl3_output_cert_chain(): an application had no way to send the
7278 correct chain if the automatic operation produced an incorrect result.
7280 Now the chain builder is disabled if either:
7282 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
7284 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
7286 The reasoning behind this is that an application would not want the
7287 auto chain building to take place if extra chain certificates are
7288 present and it might also want a means of sending no additional
7289 certificates (for example the chain has two certificates and the
7293 *) Add the possibility to build without the ENGINE framework.
7294 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
7296 *) Under Win32 gmtime() can return NULL: check return value in
7297 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
7300 *) DSA routines: under certain error conditions uninitialized BN objects
7301 could be freed. Solution: make sure initialization is performed early
7302 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
7303 Nils Larsch <nla@trustcenter.de> via PR#459)
7306 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
7307 checked on reconnect on the client side, therefore session resumption
7308 could still fail with a "ssl session id is different" error. This
7309 behaviour is masked when SSL_OP_ALL is used due to
7310 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
7311 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
7312 followup to PR #377.
7315 *) IA-32 assembler support enhancements: unified ELF targets, support
7316 for SCO/Caldera platforms, fix for Cygwin shared build.
7319 *) Add support for FreeBSD on sparc64. As a consequence, support for
7320 FreeBSD on non-x86 processors is separate from x86 processors on
7321 the config script, much like the NetBSD support.
7322 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
7324 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
7326 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
7329 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
7330 code (06) was taken as the first octet of the session ID and the last
7331 octet was ignored consequently. As a result SSLv2 client side session
7332 caching could not have worked due to the session ID mismatch between
7334 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
7338 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
7339 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
7343 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
7344 seems that in spite of existing for more than a year, many application
7345 author have done nothing to provide the necessary callbacks, which
7346 means that this particular engine will not work properly anywhere.
7347 This is a very unfortunate situation which forces us, in the name
7348 of usability, to give the hw_ncipher.c a static lock, which is part
7350 NOTE: This is for the 0.9.7 series ONLY. This hack will never
7351 appear in 0.9.8 or later. We EXPECT application authors to have
7352 dealt properly with this when 0.9.8 is released (unless we actually
7353 make such changes in the libcrypto locking code that changes will
7354 have to be made anyway).
7357 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
7358 octets have been read, EOF or an error occurs. Without this change
7359 some truncated ASN1 structures will not produce an error.
7362 *) Disable Heimdal support, since it hasn't been fully implemented.
7363 Still give the possibility to force the use of Heimdal, but with
7364 warnings and a request that patches get sent to openssl-dev.
7367 *) Add the VC-CE target, introduce the WINCE sysname, and add
7368 INSTALL.WCE and appropriate conditionals to make it build.
7369 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
7371 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
7372 cygssl-x.y.z.dll, where x, y and z are the major, minor and
7373 edit numbers of the version.
7374 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
7376 *) Introduce safe string copy and catenation functions
7377 (BUF_strlcpy() and BUF_strlcat()).
7378 [Ben Laurie (CHATS) and Richard Levitte]
7380 *) Avoid using fixed-size buffers for one-line DNs.
7381 [Ben Laurie (CHATS)]
7383 *) Add BUF_MEM_grow_clean() to avoid information leakage when
7384 resizing buffers containing secrets, and use where appropriate.
7385 [Ben Laurie (CHATS)]
7387 *) Avoid using fixed size buffers for configuration file location.
7388 [Ben Laurie (CHATS)]
7390 *) Avoid filename truncation for various CA files.
7391 [Ben Laurie (CHATS)]
7393 *) Use sizeof in preference to magic numbers.
7394 [Ben Laurie (CHATS)]
7396 *) Avoid filename truncation in cert requests.
7397 [Ben Laurie (CHATS)]
7399 *) Add assertions to check for (supposedly impossible) buffer
7401 [Ben Laurie (CHATS)]
7403 *) Don't cache truncated DNS entries in the local cache (this could
7404 potentially lead to a spoofing attack).
7405 [Ben Laurie (CHATS)]
7407 *) Fix various buffers to be large enough for hex/decimal
7408 representations in a platform independent manner.
7409 [Ben Laurie (CHATS)]
7411 *) Add CRYPTO_realloc_clean() to avoid information leakage when
7412 resizing buffers containing secrets, and use where appropriate.
7413 [Ben Laurie (CHATS)]
7415 *) Add BIO_indent() to avoid much slightly worrying code to do
7417 [Ben Laurie (CHATS)]
7419 *) Convert sprintf()/BIO_puts() to BIO_printf().
7420 [Ben Laurie (CHATS)]
7422 *) buffer_gets() could terminate with the buffer only half
7424 [Ben Laurie (CHATS)]
7426 *) Add assertions to prevent user-supplied crypto functions from
7427 overflowing internal buffers by having large block sizes, etc.
7428 [Ben Laurie (CHATS)]
7430 *) New OPENSSL_assert() macro (similar to assert(), but enabled
7432 [Ben Laurie (CHATS)]
7434 *) Eliminate unused copy of key in RC4.
7435 [Ben Laurie (CHATS)]
7437 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
7438 [Ben Laurie (CHATS)]
7440 *) Fix off-by-one error in EGD path.
7441 [Ben Laurie (CHATS)]
7443 *) If RANDFILE path is too long, ignore instead of truncating.
7444 [Ben Laurie (CHATS)]
7446 *) Eliminate unused and incorrectly sized X.509 structure
7448 [Ben Laurie (CHATS)]
7450 *) Eliminate unused and dangerous function knumber().
7451 [Ben Laurie (CHATS)]
7453 *) Eliminate unused and dangerous structure, KSSL_ERR.
7454 [Ben Laurie (CHATS)]
7456 *) Protect against overlong session ID context length in an encoded
7457 session object. Since these are local, this does not appear to be
7459 [Ben Laurie (CHATS)]
7461 *) Change from security patch (see 0.9.6e below) that did not affect
7462 the 0.9.6 release series:
7464 Remote buffer overflow in SSL3 protocol - an attacker could
7465 supply an oversized master key in Kerberos-enabled versions.
7467 [Ben Laurie (CHATS)]
7469 *) Change the SSL kerb5 codes to match RFC 2712.
7472 *) Make -nameopt work fully for req and add -reqopt switch.
7473 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
7475 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
7476 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
7478 *) Make sure tests can be performed even if the corresponding algorithms
7479 have been removed entirely. This was also the last step to make
7480 OpenSSL compilable with DJGPP under all reasonable conditions.
7481 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
7483 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
7484 to allow version independent disabling of normally unselected ciphers,
7485 which may be activated as a side-effect of selecting a single cipher.
7487 (E.g., cipher list string "RSA" enables ciphersuites that are left
7488 out of "ALL" because they do not provide symmetric encryption.
7489 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
7490 [Lutz Jaenicke, Bodo Moeller]
7492 *) Add appropriate support for separate platform-dependent build
7493 directories. The recommended way to make a platform-dependent
7494 build directory is the following (tested on Linux), maybe with
7497 # Place yourself outside of the OpenSSL source tree. In
7498 # this example, the environment variable OPENSSL_SOURCE
7499 # is assumed to contain the absolute OpenSSL source directory.
7500 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
7501 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
7502 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
7503 mkdir -p `dirname $F`
7504 ln -s $OPENSSL_SOURCE/$F $F
7507 To be absolutely sure not to disturb the source tree, a "make clean"
7508 is a good thing. If it isn't successful, don't worry about it,
7509 it probably means the source directory is very clean.
7512 *) Make sure any ENGINE control commands make local copies of string
7513 pointers passed to them whenever necessary. Otherwise it is possible
7514 the caller may have overwritten (or deallocated) the original string
7515 data when a later ENGINE operation tries to use the stored values.
7516 [Götz Babin-Ebell <babinebell@trustcenter.de>]
7518 *) Improve diagnostics in file reading and command-line digests.
7519 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
7521 *) Add AES modes CFB and OFB to the object database. Correct an
7522 error in AES-CFB decryption.
7525 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
7526 allows existing EVP_CIPHER_CTX structures to be reused after
7527 calling EVP_*Final(). This behaviour is used by encryption
7528 BIOs and some applications. This has the side effect that
7529 applications must explicitly clean up cipher contexts with
7530 EVP_CIPHER_CTX_cleanup() or they will leak memory.
7533 *) Check the values of dna and dnb in bn_mul_recursive before calling
7534 bn_mul_comba (a non zero value means the a or b arrays do not contain
7535 n2 elements) and fallback to bn_mul_normal if either is not zero.
7538 *) Fix escaping of non-ASCII characters when using the -subj option
7539 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
7542 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
7543 form for "surname", serialNumber has no short form.
7544 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
7545 therefore remove "mail" short name for "internet 7".
7546 The OID for unique identifiers in X509 certificates is
7547 x500UniqueIdentifier, not uniqueIdentifier.
7548 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
7551 *) Add an "init" command to the ENGINE config module and auto initialize
7552 ENGINEs. Without any "init" command the ENGINE will be initialized
7553 after all ctrl commands have been executed on it. If init=1 the
7554 ENGINE is initialized at that point (ctrls before that point are run
7555 on the uninitialized ENGINE and after on the initialized one). If
7556 init=0 then the ENGINE will not be initialized at all.
7559 *) Fix the 'app_verify_callback' interface so that the user-defined
7560 argument is actually passed to the callback: In the
7561 SSL_CTX_set_cert_verify_callback() prototype, the callback
7562 declaration has been changed from
7565 int (*cb)(X509_STORE_CTX *,void *);
7566 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
7567 i=s->ctx->app_verify_callback(&ctx)
7568 has been changed into
7569 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
7571 To update applications using SSL_CTX_set_cert_verify_callback(),
7572 a dummy argument can be added to their callback functions.
7573 [D. K. Smetters <smetters@parc.xerox.com>]
7575 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
7576 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
7578 *) Add and OPENSSL_LOAD_CONF define which will cause
7579 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
7580 This allows older applications to transparently support certain
7581 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
7582 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
7583 load the config file and OPENSSL_add_all_algorithms_conf() which will
7584 always load it have also been added.
7587 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
7588 Adjust NIDs and EVP layer.
7589 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
7591 *) Config modules support in openssl utility.
7593 Most commands now load modules from the config file,
7594 though in a few (such as version) this isn't done
7595 because it couldn't be used for anything.
7597 In the case of ca and req the config file used is
7598 the same as the utility itself: that is the -config
7599 command line option can be used to specify an
7603 *) Move default behaviour from OPENSSL_config(). If appname is NULL
7604 use "openssl_conf" if filename is NULL use default openssl config file.
7607 *) Add an argument to OPENSSL_config() to allow the use of an alternative
7608 config section name. Add a new flag to tolerate a missing config file
7609 and move code to CONF_modules_load_file().
7612 *) Support for crypto accelerator cards from Accelerated Encryption
7613 Processing, www.aep.ie. (Use engine 'aep')
7614 The support was copied from 0.9.6c [engine] and adapted/corrected
7615 to work with the new engine framework.
7616 [AEP Inc. and Richard Levitte]
7618 *) Support for SureWare crypto accelerator cards from Baltimore
7619 Technologies. (Use engine 'sureware')
7620 The support was copied from 0.9.6c [engine] and adapted
7621 to work with the new engine framework.
7624 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
7625 make the newer ENGINE framework commands for the CHIL engine work.
7626 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
7628 *) Make it possible to produce shared libraries on ReliantUNIX.
7629 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
7631 *) Add the configuration target debug-linux-ppro.
7632 Make 'openssl rsa' use the general key loading routines
7633 implemented in apps.c, and make those routines able to
7634 handle the key format FORMAT_NETSCAPE and the variant
7636 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7638 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
7639 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7641 *) Add -keyform to rsautl, and document -engine.
7642 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
7644 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
7645 BIO_R_NO_SUCH_FILE error code rather than the generic
7646 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
7649 *) Add new functions
7651 ERR_peek_last_error_line
7652 ERR_peek_last_error_line_data.
7653 These are similar to
7656 ERR_peek_error_line_data,
7657 but report on the latest error recorded rather than the first one
7658 still in the error queue.
7659 [Ben Laurie, Bodo Moeller]
7661 *) default_algorithms option in ENGINE config module. This allows things
7663 default_algorithms = ALL
7664 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
7667 *) Preliminary ENGINE config module.
7670 *) New experimental application configuration code.
7673 *) Change the AES code to follow the same name structure as all other
7674 symmetric ciphers, and behave the same way. Move everything to
7675 the directory crypto/aes, thereby obsoleting crypto/rijndael.
7676 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
7678 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
7679 [Ben Laurie and Theo de Raadt]
7681 *) Add option to output public keys in req command.
7682 [Massimiliano Pala madwolf@openca.org]
7684 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
7685 (up to about 10% better than before for P-192 and P-224).
7688 *) New functions/macros
7690 SSL_CTX_set_msg_callback(ctx, cb)
7691 SSL_CTX_set_msg_callback_arg(ctx, arg)
7692 SSL_set_msg_callback(ssl, cb)
7693 SSL_set_msg_callback_arg(ssl, arg)
7695 to request calling a callback function
7697 void cb(int write_p, int version, int content_type,
7698 const void *buf, size_t len, SSL *ssl, void *arg)
7700 whenever a protocol message has been completely received
7701 (write_p == 0) or sent (write_p == 1). Here 'version' is the
7702 protocol version according to which the SSL library interprets
7703 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
7704 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
7705 the content type as defined in the SSL 3.0/TLS 1.0 protocol
7706 specification (change_cipher_spec(20), alert(21), handshake(22)).
7707 'buf' and 'len' point to the actual message, 'ssl' to the
7708 SSL object, and 'arg' is the application-defined value set by
7709 SSL[_CTX]_set_msg_callback_arg().
7711 'openssl s_client' and 'openssl s_server' have new '-msg' options
7712 to enable a callback that displays all protocol messages.
7715 *) Change the shared library support so shared libraries are built as
7716 soon as the corresponding static library is finished, and thereby get
7717 openssl and the test programs linked against the shared library.
7718 This still only happens when the keyword "shard" has been given to
7719 the configuration scripts.
7721 NOTE: shared library support is still an experimental thing, and
7722 backward binary compatibility is still not guaranteed.
7723 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
7725 *) Add support for Subject Information Access extension.
7726 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
7728 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
7729 additional bytes when new memory had to be allocated, not just
7730 when reusing an existing buffer.
7733 *) New command line and configuration option 'utf8' for the req command.
7734 This allows field values to be specified as UTF8 strings.
7737 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
7738 runs for the former and machine-readable output for the latter.
7741 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
7742 of the e-mail address in the DN (i.e., it will go into a certificate
7743 extension only). The new configuration file option 'email_in_dn = no'
7744 has the same effect.
7745 [Massimiliano Pala madwolf@openca.org]
7747 *) Change all functions with names starting with des_ to be starting
7748 with DES_ instead. Add wrappers that are compatible with libdes,
7749 but are named _ossl_old_des_*. Finally, add macros that map the
7750 des_* symbols to the corresponding _ossl_old_des_* if libdes
7751 compatibility is desired. If OpenSSL 0.9.6c compatibility is
7752 desired, the des_* symbols will be mapped to DES_*, with one
7755 Since we provide two compatibility mappings, the user needs to
7756 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
7757 compatibility is desired. The default (i.e., when that macro
7758 isn't defined) is OpenSSL 0.9.6c compatibility.
7760 There are also macros that enable and disable the support of old
7761 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
7762 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
7763 are defined, the default will apply: to support the old des routines.
7765 In either case, one must include openssl/des.h to get the correct
7766 definitions. Do not try to just include openssl/des_old.h, that
7769 NOTE: This is a major break of an old API into a new one. Software
7770 authors are encouraged to switch to the DES_ style functions. Some
7771 time in the future, des_old.h and the libdes compatibility functions
7772 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
7773 default), and then completely removed.
7776 *) Test for certificates which contain unsupported critical extensions.
7777 If such a certificate is found during a verify operation it is
7778 rejected by default: this behaviour can be overridden by either
7779 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
7780 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
7781 X509_supported_extension() has also been added which returns 1 if a
7782 particular extension is supported.
7785 *) Modify the behaviour of EVP cipher functions in similar way to digests
7786 to retain compatibility with existing code.
7789 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
7790 compatibility with existing code. In particular the 'ctx' parameter does
7791 not have to be to be initialized before the call to EVP_DigestInit() and
7792 it is tidied up after a call to EVP_DigestFinal(). New function
7793 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
7794 EVP_MD_CTX_copy() changed to not require the destination to be
7795 initialized valid and new function EVP_MD_CTX_copy_ex() added which
7796 requires the destination to be valid.
7798 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
7799 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
7802 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
7803 so that complete 'Handshake' protocol structures are kept in memory
7804 instead of overwriting 'msg_type' and 'length' with 'body' data.
7807 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
7808 [Massimo Santin via Richard Levitte]
7810 *) Major restructuring to the underlying ENGINE code. This includes
7811 reduction of linker bloat, separation of pure "ENGINE" manipulation
7812 (initialisation, etc) from functionality dealing with implementations
7813 of specific crypto interfaces. This change also introduces integrated
7814 support for symmetric ciphers and digest implementations - so ENGINEs
7815 can now accelerate these by providing EVP_CIPHER and EVP_MD
7816 implementations of their own. This is detailed in crypto/engine/README
7817 as it couldn't be adequately described here. However, there are a few
7818 API changes worth noting - some RSA, DSA, DH, and RAND functions that
7819 were changed in the original introduction of ENGINE code have now
7820 reverted back - the hooking from this code to ENGINE is now a good
7821 deal more passive and at run-time, operations deal directly with
7822 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
7823 dereferencing through an ENGINE pointer any more. Also, the ENGINE
7824 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
7825 they were not being used by the framework as there is no concept of a
7826 BIGNUM_METHOD and they could not be generalised to the new
7827 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
7828 ENGINE_cpy() has been removed as it cannot be consistently defined in
7832 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
7835 *) Change mkdef.pl to sort symbols that get the same entry number,
7836 and make sure the automatically generated functions ERR_load_*
7837 become part of libeay.num as well.
7840 *) New function SSL_renegotiate_pending(). This returns true once
7841 renegotiation has been requested (either SSL_renegotiate() call
7842 or HelloRequest/ClientHello received from the peer) and becomes
7843 false once a handshake has been completed.
7844 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
7845 sends a HelloRequest, but does not ensure that a handshake takes
7846 place. SSL_renegotiate_pending() is useful for checking if the
7847 client has followed the request.)
7850 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
7851 By default, clients may request session resumption even during
7852 renegotiation (if session ID contexts permit); with this option,
7853 session resumption is possible only in the first handshake.
7855 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
7856 more bits available for options that should not be part of
7857 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
7860 *) Add some demos for certificate and certificate request creation.
7863 *) Make maximum certificate chain size accepted from the peer application
7864 settable (SSL*_get/set_max_cert_list()), as proposed by
7865 "Douglas E. Engert" <deengert@anl.gov>.
7868 *) Add support for shared libraries for Unixware-7
7869 (Boyd Lynn Gerber <gerberb@zenez.com>).
7872 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
7873 be done prior to destruction. Use this to unload error strings from
7874 ENGINEs that load their own error strings. NB: This adds two new API
7875 functions to "get" and "set" this destroy handler in an ENGINE.
7878 *) Alter all existing ENGINE implementations (except "openssl" and
7879 "openbsd") to dynamically instantiate their own error strings. This
7880 makes them more flexible to be built both as statically-linked ENGINEs
7881 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
7882 Also, add stub code to each that makes building them as self-contained
7883 shared-libraries easier (see README.ENGINE).
7886 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
7887 implementations into applications that are completely implemented in
7888 self-contained shared-libraries. The "dynamic" ENGINE exposes control
7889 commands that can be used to configure what shared-library to load and
7890 to control aspects of the way it is handled. Also, made an update to
7891 the README.ENGINE file that brings its information up-to-date and
7892 provides some information and instructions on the "dynamic" ENGINE
7893 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
7896 *) Make it possible to unload ranges of ERR strings with a new
7897 "ERR_unload_strings" function.
7900 *) Add a copy() function to EVP_MD.
7903 *) Make EVP_MD routines take a context pointer instead of just the
7904 md_data void pointer.
7907 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
7908 that the digest can only process a single chunk of data
7909 (typically because it is provided by a piece of
7910 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
7911 is only going to provide a single chunk of data, and hence the
7912 framework needn't accumulate the data for oneshot drivers.
7915 *) As with "ERR", make it possible to replace the underlying "ex_data"
7916 functions. This change also alters the storage and management of global
7917 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
7918 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
7919 index counters. The API functions that use this state have been changed
7920 to take a "class_index" rather than pointers to the class's local STACK
7921 and counter, and there is now an API function to dynamically create new
7922 classes. This centralisation allows us to (a) plug a lot of the
7923 thread-safety problems that existed, and (b) makes it possible to clean
7924 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
7925 such data would previously have always leaked in application code and
7926 workarounds were in place to make the memory debugging turn a blind eye
7927 to it. Application code that doesn't use this new function will still
7928 leak as before, but their memory debugging output will announce it now
7929 rather than letting it slide.
7931 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
7932 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
7933 has a return value to indicate success or failure.
7936 *) Make it possible to replace the underlying "ERR" functions such that the
7937 global state (2 LHASH tables and 2 locks) is only used by the "default"
7938 implementation. This change also adds two functions to "get" and "set"
7939 the implementation prior to it being automatically set the first time
7940 any other ERR function takes place. Ie. an application can call "get",
7941 pass the return value to a module it has just loaded, and that module
7942 can call its own "set" function using that value. This means the
7943 module's "ERR" operations will use (and modify) the error state in the
7944 application and not in its own statically linked copy of OpenSSL code.
7947 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
7948 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
7949 the operation, and provides a more encapsulated way for external code
7950 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
7951 to use these functions rather than manually incrementing the counts.
7953 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
7956 *) Add EVP test program.
7959 *) Add symmetric cipher support to ENGINE. Expect the API to change!
7962 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
7963 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
7964 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
7965 These allow a CRL to be built without having to access X509_CRL fields
7966 directly. Modify 'ca' application to use new functions.
7969 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
7970 bug workarounds. Rollback attack detection is a security feature.
7971 The problem will only arise on OpenSSL servers when TLSv1 is not
7972 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
7973 Software authors not wanting to support TLSv1 will have special reasons
7974 for their choice and can explicitly enable this option.
7975 [Bodo Moeller, Lutz Jaenicke]
7977 *) Rationalise EVP so it can be extended: don't include a union of
7978 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
7979 (similar to those existing for EVP_CIPHER_CTX).
7984 EVP_MD_CTX_init(&md); /* new function call */
7985 EVP_DigestInit(&md, EVP_sha1());
7986 EVP_DigestUpdate(&md, in, len);
7987 EVP_DigestFinal(&md, out, NULL);
7988 EVP_MD_CTX_cleanup(&md); /* new function call */
7992 *) Make DES key schedule conform to the usual scheme, as well as
7993 correcting its structure. This means that calls to DES functions
7994 now have to pass a pointer to a des_key_schedule instead of a
7995 plain des_key_schedule (which was actually always a pointer
7998 des_key_schedule ks;
8000 des_set_key_checked(..., &ks);
8001 des_ncbc_encrypt(..., &ks, ...);
8003 (Note that a later change renames 'des_...' into 'DES_...'.)
8006 *) Initial reduction of linker bloat: the use of some functions, such as
8007 PEM causes large amounts of unused functions to be linked in due to
8008 poor organisation. For example pem_all.c contains every PEM function
8009 which has a knock on effect of linking in large amounts of (unused)
8010 ASN1 code. Grouping together similar functions and splitting unrelated
8011 functions prevents this.
8014 *) Cleanup of EVP macros.
8017 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
8018 correct _ecb suffix.
8021 *) Add initial OCSP responder support to ocsp application. The
8022 revocation information is handled using the text based index
8023 use by the ca application. The responder can either handle
8024 requests generated internally, supplied in files (for example
8025 via a CGI script) or using an internal minimal server.
8028 *) Add configuration choices to get zlib compression for TLS.
8031 *) Changes to Kerberos SSL for RFC 2712 compliance:
8032 1. Implemented real KerberosWrapper, instead of just using
8033 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
8034 2. Implemented optional authenticator field of KerberosWrapper.
8036 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
8037 and authenticator structs; see crypto/krb5/.
8039 Generalized Kerberos calls to support multiple Kerberos libraries.
8040 [Vern Staats <staatsvr@asc.hpc.mil>,
8041 Jeffrey Altman <jaltman@columbia.edu>
8042 via Richard Levitte]
8044 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
8045 already does with RSA. testdsa.h now has 'priv_key/pub_key'
8046 values for each of the key sizes rather than having just
8047 parameters (and 'speed' generating keys each time).
8050 *) Speed up EVP routines.
8053 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
8054 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
8055 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
8056 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
8058 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
8059 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
8060 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
8063 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
8065 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
8068 *) Added the OS2-EMX target.
8069 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
8071 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
8072 to support NCONF routines in extension code. New function CONF_set_nconf()
8073 to allow functions which take an NCONF to also handle the old LHASH
8074 structure: this means that the old CONF compatible routines can be
8075 retained (in particular wrt extensions) without having to duplicate the
8076 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
8079 *) Enhance the general user interface with mechanisms for inner control
8080 and with possibilities to have yes/no kind of prompts.
8083 *) Change all calls to low level digest routines in the library and
8084 applications to use EVP. Add missing calls to HMAC_cleanup() and
8085 don't assume HMAC_CTX can be copied using memcpy().
8086 [Verdon Walker <VWalker@novell.com>, Steve Henson]
8088 *) Add the possibility to control engines through control names but with
8089 arbitrary arguments instead of just a string.
8090 Change the key loaders to take a UI_METHOD instead of a callback
8091 function pointer. NOTE: this breaks binary compatibility with earlier
8092 versions of OpenSSL [engine].
8093 Adapt the nCipher code for these new conditions and add a card insertion
8097 *) Enhance the general user interface with mechanisms to better support
8098 dialog box interfaces, application-defined prompts, the possibility
8099 to use defaults (for example default passwords from somewhere else)
8100 and interrupts/cancellations.
8103 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
8104 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
8107 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
8108 tidy up some unnecessarily weird code in 'sk_new()').
8109 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
8111 *) Change the key loading routines for ENGINEs to use the same kind
8112 callback (pem_password_cb) as all other routines that need this
8116 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
8117 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
8118 than this minimum value is recommended.
8121 *) New random seeder for OpenVMS, using the system process statistics
8122 that are easily reachable.
8125 *) Windows apparently can't transparently handle global
8126 variables defined in DLLs. Initialisations such as:
8128 const ASN1_ITEM *it = &ASN1_INTEGER_it;
8130 won't compile. This is used by the any applications that need to
8131 declare their own ASN1 modules. This was fixed by adding the option
8132 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
8133 needed for static libraries under Win32.
8136 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
8137 setting of purpose and trust fields. New X509_STORE trust and
8138 purpose functions and tidy up setting in other SSL functions.
8141 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
8142 structure. These are inherited by X509_STORE_CTX when it is
8143 initialised. This allows various defaults to be set in the
8144 X509_STORE structure (such as flags for CRL checking and custom
8145 purpose or trust settings) for functions which only use X509_STORE_CTX
8146 internally such as S/MIME.
8148 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
8149 trust settings if they are not set in X509_STORE. This allows X509_STORE
8150 purposes and trust (in S/MIME for example) to override any set by default.
8152 Add command line options for CRL checking to smime, s_client and s_server
8156 *) Initial CRL based revocation checking. If the CRL checking flag(s)
8157 are set then the CRL is looked up in the X509_STORE structure and
8158 its validity and signature checked, then if the certificate is found
8159 in the CRL the verify fails with a revoked error.
8161 Various new CRL related callbacks added to X509_STORE_CTX structure.
8163 Command line options added to 'verify' application to support this.
8165 This needs some additional work, such as being able to handle multiple
8166 CRLs with different times, extension based lookup (rather than just
8167 by subject name) and ultimately more complete V2 CRL extension
8171 *) Add a general user interface API (crypto/ui/). This is designed
8172 to replace things like des_read_password and friends (backward
8173 compatibility functions using this new API are provided).
8174 The purpose is to remove prompting functions from the DES code
8175 section as well as provide for prompting through dialog boxes in
8176 a window system and the like.
8179 *) Add "ex_data" support to ENGINE so implementations can add state at a
8180 per-structure level rather than having to store it globally.
8183 *) Make it possible for ENGINE structures to be copied when retrieved by
8184 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
8185 This causes the "original" ENGINE structure to act like a template,
8186 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
8187 operational state can be localised to each ENGINE structure, despite the
8188 fact they all share the same "methods". New ENGINE structures returned in
8189 this case have no functional references and the return value is the single
8190 structural reference. This matches the single structural reference returned
8191 by ENGINE_by_id() normally, when it is incremented on the pre-existing
8195 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
8196 needs to match any other type at all we need to manually clear the
8200 *) Changes to the "openssl engine" utility to include;
8201 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
8202 about an ENGINE's available control commands.
8203 - executing control commands from command line arguments using the
8204 '-pre' and '-post' switches. '-post' is only used if '-t' is
8205 specified and the ENGINE is successfully initialised. The syntax for
8206 the individual commands are colon-separated, for example;
8207 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
8210 *) New dynamic control command support for ENGINEs. ENGINEs can now
8211 declare their own commands (numbers), names (strings), descriptions,
8212 and input types for run-time discovery by calling applications. A
8213 subset of these commands are implicitly classed as "executable"
8214 depending on their input type, and only these can be invoked through
8215 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
8216 can be based on user input, config files, etc). The distinction is
8217 that "executable" commands cannot return anything other than a boolean
8218 result and can only support numeric or string input, whereas some
8219 discoverable commands may only be for direct use through
8220 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
8221 pointers, or other custom uses. The "executable" commands are to
8222 support parameterisations of ENGINE behaviour that can be
8223 unambiguously defined by ENGINEs and used consistently across any
8224 OpenSSL-based application. Commands have been added to all the
8225 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
8226 control over shared-library paths without source code alterations.
8229 *) Changed all ENGINE implementations to dynamically allocate their
8230 ENGINEs rather than declaring them statically. Apart from this being
8231 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
8232 this also allows the implementations to compile without using the
8233 internal engine_int.h header.
8236 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
8237 'const' value. Any code that should be able to modify a RAND_METHOD
8238 should already have non-const pointers to it (ie. they should only
8239 modify their own ones).
8242 *) Made a variety of little tweaks to the ENGINE code.
8243 - "atalla" and "ubsec" string definitions were moved from header files
8244 to C code. "nuron" string definitions were placed in variables
8245 rather than hard-coded - allowing parameterisation of these values
8246 later on via ctrl() commands.
8247 - Removed unused "#if 0"'d code.
8248 - Fixed engine list iteration code so it uses ENGINE_free() to release
8249 structural references.
8250 - Constified the RAND_METHOD element of ENGINE structures.
8251 - Constified various get/set functions as appropriate and added
8252 missing functions (including a catch-all ENGINE_cpy that duplicates
8253 all ENGINE values onto a new ENGINE except reference counts/state).
8254 - Removed NULL parameter checks in get/set functions. Setting a method
8255 or function to NULL is a way of cancelling out a previously set
8256 value. Passing a NULL ENGINE parameter is just plain stupid anyway
8257 and doesn't justify the extra error symbols and code.
8258 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
8259 flags from engine_int.h to engine.h.
8260 - Changed prototypes for ENGINE handler functions (init(), finish(),
8261 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
8264 *) Implement binary inversion algorithm for BN_mod_inverse in addition
8265 to the algorithm using long division. The binary algorithm can be
8266 used only if the modulus is odd. On 32-bit systems, it is faster
8267 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
8268 roughly 5-15% for 256-bit moduli), so we use it only for moduli
8269 up to 450 bits. In 64-bit environments, the binary algorithm
8270 appears to be advantageous for much longer moduli; here we use it
8271 for moduli up to 2048 bits.
8274 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
8275 could not support the combine flag in choice fields.
8278 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
8279 extensions from a certificate request to the certificate.
8282 *) Allow multiple 'certopt' and 'nameopt' options to be separated
8283 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
8284 file: this allows the display of the certificate about to be
8285 signed to be customised, to allow certain fields to be included
8286 or excluded and extension details. The old system didn't display
8287 multicharacter strings properly, omitted fields not in the policy
8288 and couldn't display additional details such as extensions.
8291 *) Function EC_POINTs_mul for multiple scalar multiplication
8292 of an arbitrary number of elliptic curve points
8293 \sum scalars[i]*points[i],
8294 optionally including the generator defined for the EC_GROUP:
8295 scalar*generator + \sum scalars[i]*points[i].
8297 EC_POINT_mul is a simple wrapper function for the typical case
8298 that the point list has just one item (besides the optional
8302 *) First EC_METHODs for curves over GF(p):
8304 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
8305 operations and provides various method functions that can also
8306 operate with faster implementations of modular arithmetic.
8308 EC_GFp_mont_method() reuses most functions that are part of
8309 EC_GFp_simple_method, but uses Montgomery arithmetic.
8311 [Bodo Moeller; point addition and point doubling
8312 implementation directly derived from source code provided by
8313 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
8315 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
8316 crypto/ec/ec_lib.c):
8318 Curves are EC_GROUP objects (with an optional group generator)
8319 based on EC_METHODs that are built into the library.
8321 Points are EC_POINT objects based on EC_GROUP objects.
8323 Most of the framework would be able to handle curves over arbitrary
8324 finite fields, but as there are no obvious types for fields other
8325 than GF(p), some functions are limited to that for now.
8328 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
8329 that the file contains a complete HTTP response.
8332 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
8333 change the def and num file printf format specifier from "%-40sXXX"
8334 to "%-39s XXX". The latter will always guarantee a space after the
8335 field while the former will cause them to run together if the field
8336 is 40 of more characters long.
8339 *) Constify the cipher and digest 'method' functions and structures
8340 and modify related functions to take constant EVP_MD and EVP_CIPHER
8344 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
8345 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
8348 *) Modify EVP_Digest*() routines so they now return values. Although the
8349 internal software routines can never fail additional hardware versions
8353 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
8355 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
8356 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
8359 ERR_R_NESTED_ASN1_ERROR
8361 ERR_R_MISSING_ASN1_EOS
8362 were 4 .. 9, conflicting with
8363 ERR_LIB_RSA (= ERR_R_RSA_LIB)
8365 ERR_LIB_PEM (= ERR_R_PEM_LIB).
8366 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
8368 Add new error code 'ERR_R_INTERNAL_ERROR'.
8371 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
8375 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
8376 sets the subject name for a new request or supersedes the
8377 subject name in a given request. Formats that can be parsed are
8378 'CN=Some Name, OU=myOU, C=IT'
8380 'CN=Some Name/OU=myOU/C=IT'.
8382 Add options '-batch' and '-verbose' to 'openssl req'.
8383 [Massimiliano Pala <madwolf@hackmasters.net>]
8385 *) Introduce the possibility to access global variables through
8386 functions on platform were that's the best way to handle exporting
8387 global variables in shared libraries. To enable this functionality,
8388 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
8389 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
8390 is normally done by Configure or something similar).
8392 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
8393 in the source file (foo.c) like this:
8395 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
8396 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
8398 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
8399 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
8401 OPENSSL_DECLARE_GLOBAL(int,foo);
8402 #define foo OPENSSL_GLOBAL_REF(foo)
8403 OPENSSL_DECLARE_GLOBAL(double,bar);
8404 #define bar OPENSSL_GLOBAL_REF(bar)
8406 The #defines are very important, and therefore so is including the
8407 header file everywhere where the defined globals are used.
8409 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
8410 of ASN.1 items, but that structure is a bit different.
8412 The largest change is in util/mkdef.pl which has been enhanced with
8413 better and easier to understand logic to choose which symbols should
8414 go into the Windows .def files as well as a number of fixes and code
8415 cleanup (among others, algorithm keywords are now sorted
8416 lexicographically to avoid constant rewrites).
8419 *) In BN_div() keep a copy of the sign of 'num' before writing the
8420 result to 'rm' because if rm==num the value will be overwritten
8421 and produce the wrong result if 'num' is negative: this caused
8422 problems with BN_mod() and BN_nnmod().
8425 *) Function OCSP_request_verify(). This checks the signature on an
8426 OCSP request and verifies the signer certificate. The signer
8427 certificate is just checked for a generic purpose and OCSP request
8431 *) Add OCSP_check_validity() function to check the validity of OCSP
8432 responses. OCSP responses are prepared in real time and may only
8433 be a few seconds old. Simply checking that the current time lies
8434 between thisUpdate and nextUpdate max reject otherwise valid responses
8435 caused by either OCSP responder or client clock inaccuracy. Instead
8436 we allow thisUpdate and nextUpdate to fall within a certain period of
8437 the current time. The age of the response can also optionally be
8438 checked. Two new options -validity_period and -status_age added to
8442 *) If signature or public key algorithm is unrecognized print out its
8443 OID rather that just UNKNOWN.
8446 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
8447 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
8448 ID to be generated from the issuer certificate alone which can then be
8449 passed to OCSP_id_issuer_cmp().
8452 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
8453 ASN1 modules to export functions returning ASN1_ITEM pointers
8454 instead of the ASN1_ITEM structures themselves. This adds several
8455 new macros which allow the underlying ASN1 function/structure to
8456 be accessed transparently. As a result code should not use ASN1_ITEM
8457 references directly (such as &X509_it) but instead use the relevant
8458 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
8459 use of the new ASN1 code on platforms where exporting structures
8460 is problematical (for example in shared libraries) but exporting
8461 functions returning pointers to structures is not.
8464 *) Add support for overriding the generation of SSL/TLS session IDs.
8465 These callbacks can be registered either in an SSL_CTX or per SSL.
8466 The purpose of this is to allow applications to control, if they wish,
8467 the arbitrary values chosen for use as session IDs, particularly as it
8468 can be useful for session caching in multiple-server environments. A
8469 command-line switch for testing this (and any client code that wishes
8470 to use such a feature) has been added to "s_server".
8471 [Geoff Thorpe, Lutz Jaenicke]
8473 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
8474 of the form '#if defined(...) || defined(...) || ...' and
8475 '#if !defined(...) && !defined(...) && ...'. This also avoids
8476 the growing number of special cases it was previously handling.
8479 *) Make all configuration macros available for application by making
8480 sure they are available in opensslconf.h, by giving them names starting
8481 with "OPENSSL_" to avoid conflicts with other packages and by making
8482 sure e_os2.h will cover all platform-specific cases together with
8484 Additionally, it is now possible to define configuration/platform-
8485 specific names (called "system identities"). In the C code, these
8486 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
8487 macro with the name beginning with "OPENSSL_SYS_", which is determined
8488 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
8492 *) New option -set_serial to 'req' and 'x509' this allows the serial
8493 number to use to be specified on the command line. Previously self
8494 signed certificates were hard coded with serial number 0 and the
8495 CA options of 'x509' had to use a serial number in a file which was
8499 *) New options to 'ca' utility to support V2 CRL entry extensions.
8500 Currently CRL reason, invalidity date and hold instruction are
8501 supported. Add new CRL extensions to V3 code and some new objects.
8504 *) New function EVP_CIPHER_CTX_set_padding() this is used to
8505 disable standard block padding (aka PKCS#5 padding) in the EVP
8506 API, which was previously mandatory. This means that the data is
8507 not padded in any way and so the total length much be a multiple
8508 of the block size, otherwise an error occurs.
8511 *) Initial (incomplete) OCSP SSL support.
8514 *) New function OCSP_parse_url(). This splits up a URL into its host,
8515 port and path components: primarily to parse OCSP URLs. New -url
8516 option to ocsp utility.
8519 *) New nonce behavior. The return value of OCSP_check_nonce() now
8520 reflects the various checks performed. Applications can decide
8521 whether to tolerate certain situations such as an absent nonce
8522 in a response when one was present in a request: the ocsp application
8523 just prints out a warning. New function OCSP_add1_basic_nonce()
8524 this is to allow responders to include a nonce in a response even if
8525 the request is nonce-less.
8528 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
8529 skipped when using openssl x509 multiple times on a single input file,
8530 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
8533 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
8534 set string type: to handle setting ASN1_TIME structures. Fix ca
8535 utility to correctly initialize revocation date of CRLs.
8538 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
8539 the clients preferred ciphersuites and rather use its own preferences.
8540 Should help to work around M$ SGC (Server Gated Cryptography) bug in
8541 Internet Explorer by ensuring unchanged hash method during stepup.
8542 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
8545 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
8546 to aes and add a new 'exist' option to print out symbols that don't
8550 *) Additional options to ocsp utility to allow flags to be set and
8551 additional certificates supplied.
8554 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
8555 OCSP client a number of certificate to only verify the response
8559 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
8560 handle the new API. Currently only ECB, CBC modes supported. Add new
8563 Add TLS AES ciphersuites as described in RFC3268, "Advanced
8564 Encryption Standard (AES) Ciphersuites for Transport Layer
8565 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
8566 not enabled by default and were not part of the "ALL" ciphersuite
8567 alias because they were not yet official; they could be
8568 explicitly requested by specifying the "AESdraft" ciphersuite
8569 group alias. In the final release of OpenSSL 0.9.7, the group
8570 alias is called "AES" and is part of "ALL".)
8571 [Ben Laurie, Steve Henson, Bodo Moeller]
8573 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
8574 request to response.
8577 *) Functions for OCSP responders. OCSP_request_onereq_count(),
8578 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
8579 extract information from a certificate request. OCSP_response_create()
8580 creates a response and optionally adds a basic response structure.
8581 OCSP_basic_add1_status() adds a complete single response to a basic
8582 response and returns the OCSP_SINGLERESP structure just added (to allow
8583 extensions to be included for example). OCSP_basic_add1_cert() adds a
8584 certificate to a basic response and OCSP_basic_sign() signs a basic
8585 response with various flags. New helper functions ASN1_TIME_check()
8586 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
8587 (converts ASN1_TIME to GeneralizedTime).
8590 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
8591 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
8592 structure from a certificate. X509_pubkey_digest() digests the public_key
8593 contents: this is used in various key identifiers.
8596 *) Make sk_sort() tolerate a NULL argument.
8597 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
8599 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
8600 passed by the function are trusted implicitly. If any of them signed the
8601 response then it is assumed to be valid and is not verified.
8604 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
8605 to data. This was previously part of the PKCS7 ASN1 code. This
8606 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
8607 [Steve Henson, reported by Kenneth R. Robinette
8608 <support@securenetterm.com>]
8610 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
8611 routines: without these tracing memory leaks is very painful.
8612 Fix leaks in PKCS12 and PKCS7 routines.
8615 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
8616 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
8617 effectively meant GeneralizedTime would never be used. Now it
8618 is initialised to -1 but X509_time_adj() now has to check the value
8619 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
8620 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
8621 [Steve Henson, reported by Kenneth R. Robinette
8622 <support@securenetterm.com>]
8624 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
8625 result in a zero length in the ASN1_INTEGER structure which was
8626 not consistent with the structure when d2i_ASN1_INTEGER() was used
8627 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
8628 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
8629 where it did not print out a minus for negative ASN1_INTEGER.
8632 *) Add summary printout to ocsp utility. The various functions which
8633 convert status values to strings have been renamed to:
8634 OCSP_response_status_str(), OCSP_cert_status_str() and
8635 OCSP_crl_reason_str() and are no longer static. New options
8636 to verify nonce values and to disable verification. OCSP response
8637 printout format cleaned up.
8640 *) Add additional OCSP certificate checks. These are those specified
8641 in RFC2560. This consists of two separate checks: the CA of the
8642 certificate being checked must either be the OCSP signer certificate
8643 or the issuer of the OCSP signer certificate. In the latter case the
8644 OCSP signer certificate must contain the OCSP signing extended key
8645 usage. This check is performed by attempting to match the OCSP
8646 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
8647 in the OCSP_CERTID structures of the response.
8650 *) Initial OCSP certificate verification added to OCSP_basic_verify()
8651 and related routines. This uses the standard OpenSSL certificate
8652 verify routines to perform initial checks (just CA validity) and
8653 to obtain the certificate chain. Then additional checks will be
8654 performed on the chain. Currently the root CA is checked to see
8655 if it is explicitly trusted for OCSP signing. This is used to set
8656 a root CA as a global signing root: that is any certificate that
8657 chains to that CA is an acceptable OCSP signing certificate.
8660 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
8661 extensions from a separate configuration file.
8662 As when reading extensions from the main configuration file,
8663 the '-extensions ...' option may be used for specifying the
8665 [Massimiliano Pala <madwolf@comune.modena.it>]
8667 *) New OCSP utility. Allows OCSP requests to be generated or
8668 read. The request can be sent to a responder and the output
8669 parsed, outputed or printed in text form. Not complete yet:
8670 still needs to check the OCSP response validity.
8673 *) New subcommands for 'openssl ca':
8674 'openssl ca -status <serial>' prints the status of the cert with
8675 the given serial number (according to the index file).
8676 'openssl ca -updatedb' updates the expiry status of certificates
8678 [Massimiliano Pala <madwolf@comune.modena.it>]
8680 *) New '-newreq-nodes' command option to CA.pl. This is like
8681 '-newreq', but calls 'openssl req' with the '-nodes' option
8682 so that the resulting key is not encrypted.
8683 [Damien Miller <djm@mindrot.org>]
8685 *) New configuration for the GNU Hurd.
8686 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
8688 *) Initial code to implement OCSP basic response verify. This
8689 is currently incomplete. Currently just finds the signer's
8690 certificate and verifies the signature on the response.
8693 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
8694 value of OPENSSLDIR. This is available via the new '-d' option
8695 to 'openssl version', and is also included in 'openssl version -a'.
8698 *) Allowing defining memory allocation callbacks that will be given
8699 file name and line number information in additional arguments
8700 (a const char* and an int). The basic functionality remains, as
8701 well as the original possibility to just replace malloc(),
8702 realloc() and free() by functions that do not know about these
8703 additional arguments. To register and find out the current
8704 settings for extended allocation functions, the following
8705 functions are provided:
8707 CRYPTO_set_mem_ex_functions
8708 CRYPTO_set_locked_mem_ex_functions
8709 CRYPTO_get_mem_ex_functions
8710 CRYPTO_get_locked_mem_ex_functions
8712 These work the same way as CRYPTO_set_mem_functions and friends.
8713 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
8714 extended allocation function is enabled.
8715 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
8716 a conventional allocation function is enabled.
8717 [Richard Levitte, Bodo Moeller]
8719 *) Finish off removing the remaining LHASH function pointer casts.
8720 There should no longer be any prototype-casting required when using
8721 the LHASH abstraction, and any casts that remain are "bugs". See
8722 the callback types and macros at the head of lhash.h for details
8723 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
8726 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
8727 If /dev/[u]random devices are not available or do not return enough
8728 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
8730 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
8731 /etc/entropy will be queried once each in this sequence, querying stops
8732 when enough entropy was collected without querying more sockets.
8735 *) Change the Unix RAND_poll() variant to be able to poll several
8736 random devices, as specified by DEVRANDOM, until a sufficient amount
8737 of data has been collected. We spend at most 10 ms on each file
8738 (select timeout) and read in non-blocking mode. DEVRANDOM now
8739 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
8740 (previously it was just the string "/dev/urandom"), so on typical
8741 platforms the 10 ms delay will never occur.
8742 Also separate out the Unix variant to its own file, rand_unix.c.
8743 For VMS, there's a currently-empty rand_vms.c.
8746 *) Move OCSP client related routines to ocsp_cl.c. These
8747 provide utility functions which an application needing
8748 to issue a request to an OCSP responder and analyse the
8749 response will typically need: as opposed to those which an
8750 OCSP responder itself would need which will be added later.
8752 OCSP_request_sign() signs an OCSP request with an API similar
8753 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
8754 response. OCSP_response_get1_basic() extracts basic response
8755 from response. OCSP_resp_find_status(): finds and extracts status
8756 information from an OCSP_CERTID structure (which will be created
8757 when the request structure is built). These are built from lower
8758 level functions which work on OCSP_SINGLERESP structures but
8759 won't normally be used unless the application wishes to examine
8760 extensions in the OCSP response for example.
8762 Replace nonce routines with a pair of functions.
8763 OCSP_request_add1_nonce() adds a nonce value and optionally
8764 generates a random value. OCSP_check_nonce() checks the
8765 validity of the nonce in an OCSP response.
8768 *) Change function OCSP_request_add() to OCSP_request_add0_id().
8769 This doesn't copy the supplied OCSP_CERTID and avoids the
8770 need to free up the newly created id. Change return type
8771 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
8772 This can then be used to add extensions to the request.
8773 Deleted OCSP_request_new(), since most of its functionality
8774 is now in OCSP_REQUEST_new() (and the case insensitive name
8775 clash) apart from the ability to set the request name which
8776 will be added elsewhere.
8779 *) Update OCSP API. Remove obsolete extensions argument from
8780 various functions. Extensions are now handled using the new
8781 OCSP extension code. New simple OCSP HTTP function which
8782 can be used to send requests and parse the response.
8785 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
8786 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
8787 uses the special reorder version of SET OF to sort the attributes
8788 and reorder them to match the encoded order. This resolves a long
8789 standing problem: a verify on a PKCS7 structure just after signing
8790 it used to fail because the attribute order did not match the
8791 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
8792 it uses the received order. This is necessary to tolerate some broken
8793 software that does not order SET OF. This is handled by encoding
8794 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
8795 to produce the required SET OF.
8798 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
8799 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
8800 files to get correct declarations of the ASN.1 item variables.
8803 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
8804 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
8805 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
8806 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
8807 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
8808 ASN1_ITEM and no wrapper functions.
8811 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
8812 replace the old function pointer based I/O routines. Change most of
8813 the *_d2i_bio() and *_d2i_fp() functions to use these.
8816 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
8817 lines, recognize more "algorithms" that can be deselected, and make
8818 it complain about algorithm deselection that isn't recognised.
8821 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
8822 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
8823 to use new functions. Add NO_ASN1_OLD which can be set to remove
8824 some old style ASN1 functions: this can be used to determine if old
8825 code will still work when these eventually go away.
8828 *) New extension functions for OCSP structures, these follow the
8829 same conventions as certificates and CRLs.
8832 *) New function X509V3_add1_i2d(). This automatically encodes and
8833 adds an extension. Its behaviour can be customised with various
8834 flags to append, replace or delete. Various wrappers added for
8835 certificates and CRLs.
8838 *) Fix to avoid calling the underlying ASN1 print routine when
8839 an extension cannot be parsed. Correct a typo in the
8840 OCSP_SERVICELOC extension. Tidy up print OCSP format.
8843 *) Make mkdef.pl parse some of the ASN1 macros and add appropriate
8844 entries for variables.
8847 *) Add functionality to apps/openssl.c for detecting locking
8848 problems: As the program is single-threaded, all we have
8849 to do is register a locking callback using an array for
8850 storing which locks are currently held by the program.
8853 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
8854 SSL_get_ex_data_X509_STORE_idx(), which is used in
8855 ssl_verify_cert_chain() and thus can be called at any time
8856 during TLS/SSL handshakes so that thread-safety is essential.
8857 Unfortunately, the ex_data design is not at all suited
8858 for multi-threaded use, so it probably should be abolished.
8861 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
8862 [Broadcom, tweaked and integrated by Geoff Thorpe]
8864 *) Move common extension printing code to new function
8865 X509V3_print_extensions(). Reorganise OCSP print routines and
8866 implement some needed OCSP ASN1 functions. Add OCSP extensions.
8869 *) New function X509_signature_print() to remove duplication in some
8873 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
8874 set (this was treated exactly the same as SET OF previously). This
8875 is used to reorder the STACK representing the structure to match the
8876 encoding. This will be used to get round a problem where a PKCS7
8877 structure which was signed could not be verified because the STACK
8878 order did not reflect the encoded order.
8881 *) Reimplement the OCSP ASN1 module using the new code.
8884 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
8885 for its ASN1 operations. The old style function pointers still exist
8886 for now but they will eventually go away.
8889 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
8890 completely replaces the old ASN1 functionality with a table driven
8891 encoder and decoder which interprets an ASN1_ITEM structure describing
8892 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
8893 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
8894 has also been converted to the new form.
8897 *) Change BN_mod_exp_recp so that negative moduli are tolerated
8898 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
8899 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
8900 for negative moduli.
8903 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
8904 of not touching the result's sign bit.
8907 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
8911 *) Changed the LHASH code to use prototypes for callbacks, and created
8912 macros to declare and implement thin (optionally static) functions
8913 that provide type-safety and avoid function pointer casting for the
8914 type-specific callbacks.
8917 *) Added Kerberos Cipher Suites to be used with TLS, as written in
8919 [Veers Staats <staatsvr@asc.hpc.mil>,
8920 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
8922 *) Reformat the FAQ so the different questions and answers can be divided
8923 in sections depending on the subject.
8926 *) Have the zlib compression code load ZLIB.DLL dynamically under
8930 *) New function BN_mod_sqrt for computing square roots modulo a prime
8931 (using the probabilistic Tonelli-Shanks algorithm unless
8932 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
8933 be handled deterministically).
8934 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
8936 *) Make BN_mod_inverse faster by explicitly handling small quotients
8937 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
8938 512 bits], about 30% for larger ones [1024 or 2048 bits].)
8941 *) New function BN_kronecker.
8944 *) Fix BN_gcd so that it works on negative inputs; the result is
8945 positive unless both parameters are zero.
8946 Previously something reasonably close to an infinite loop was
8947 possible because numbers could be growing instead of shrinking
8948 in the implementation of Euclid's algorithm.
8951 *) Fix BN_is_word() and BN_is_one() macros to take into account the
8952 sign of the number in question.
8954 Fix BN_is_word(a,w) to work correctly for w == 0.
8956 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
8957 because its test if the absolute value of 'a' equals 'w'.
8958 Note that BN_abs_is_word does *not* handle w == 0 reliably;
8959 it exists mostly for use in the implementations of BN_is_zero(),
8960 BN_is_one(), and BN_is_word().
8963 *) New function BN_swap.
8966 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
8967 the exponentiation functions are more likely to produce reasonable
8968 results on negative inputs.
8971 *) Change BN_mod_mul so that the result is always non-negative.
8972 Previously, it could be negative if one of the factors was negative;
8973 I don't think anyone really wanted that behaviour.
8976 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
8977 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
8978 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
8979 and add new functions:
8988 BN_mod_lshift1_quick
8992 These functions always generate non-negative results.
8994 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
8995 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
8997 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
8998 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
8999 be reduced modulo m.
9000 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
9003 The following entry accidentally appeared in the CHANGES file
9004 distributed with OpenSSL 0.9.7. The modifications described in
9005 it do *not* apply to OpenSSL 0.9.7.
9007 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
9008 was actually never needed) and in BN_mul(). The removal in BN_mul()
9009 required a small change in bn_mul_part_recursive() and the addition
9010 of the functions bn_cmp_part_words(), bn_sub_part_words() and
9011 bn_add_part_words(), which do the same thing as bn_cmp_words(),
9012 bn_sub_words() and bn_add_words() except they take arrays with
9017 *) In 'openssl passwd', verify passwords read from the terminal
9018 unless the '-salt' option is used (which usually means that
9019 verification would just waste user's time since the resulting
9020 hash is going to be compared with some given password hash)
9021 or the new '-noverify' option is used.
9023 This is an incompatible change, but it does not affect
9024 non-interactive use of 'openssl passwd' (passwords on the command
9025 line, '-stdin' option, '-in ...' option) and thus should not
9029 *) Remove all references to RSAref, since there's no more need for it.
9032 *) Make DSO load along a path given through an environment variable
9033 (SHLIB_PATH) with shl_load().
9036 *) Constify the ENGINE code as a result of BIGNUM constification.
9037 Also constify the RSA code and most things related to it. In a
9038 few places, most notable in the depth of the ASN.1 code, ugly
9039 casts back to non-const were required (to be solved at a later
9043 *) Make it so the openssl application has all engines loaded by default.
9046 *) Constify the BIGNUM routines a little more.
9049 *) Add the following functions:
9051 ENGINE_load_cswift()
9053 ENGINE_load_atalla()
9055 ENGINE_load_builtin_engines()
9057 That way, an application can itself choose if external engines that
9058 are built-in in OpenSSL shall ever be used or not. The benefit is
9059 that applications won't have to be linked with libdl or other dso
9060 libraries unless it's really needed.
9062 Changed 'openssl engine' to load all engines on demand.
9063 Changed the engine header files to avoid the duplication of some
9064 declarations (they differed!).
9067 *) 'openssl engine' can now list capabilities.
9070 *) Better error reporting in 'openssl engine'.
9073 *) Never call load_dh_param(NULL) in s_server.
9076 *) Add engine application. It can currently list engines by name and
9077 identity, and test if they are actually available.
9080 *) Improve RPM specification file by forcing symbolic linking and making
9081 sure the installed documentation is also owned by root.root.
9082 [Damien Miller <djm@mindrot.org>]
9084 *) Give the OpenSSL applications more possibilities to make use of
9085 keys (public as well as private) handled by engines.
9088 *) Add OCSP code that comes from CertCo.
9091 *) Add VMS support for the Rijndael code.
9094 *) Added untested support for Nuron crypto accelerator.
9097 *) Add support for external cryptographic devices. This code was
9098 previously distributed separately as the "engine" branch.
9099 [Geoff Thorpe, Richard Levitte]
9101 *) Rework the filename-translation in the DSO code. It is now possible to
9102 have far greater control over how a "name" is turned into a filename
9103 depending on the operating environment and any oddities about the
9104 different shared library filenames on each system.
9107 *) Support threads on FreeBSD-elf in Configure.
9110 *) Fix for SHA1 assembly problem with MASM: it produces
9111 warnings about corrupt line number information when assembling
9112 with debugging information. This is caused by the overlapping
9114 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
9117 NCONF_get_number() has no error checking at all. As a replacement,
9118 NCONF_get_number_e() is defined (_e for "error checking") and is
9119 promoted strongly. The old NCONF_get_number is kept around for
9120 binary backward compatibility.
9121 Make it possible for methods to load from something other than a BIO,
9122 by providing a function pointer that is given a name instead of a BIO.
9123 For example, this could be used to load configuration data from an
9127 *) Fix for non blocking accept BIOs. Added new I/O special reason
9128 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
9129 with non blocking I/O was not possible because no retry code was
9130 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
9134 *) Added the beginnings of Rijndael support.
9137 *) Fix for bug in DirectoryString mask setting. Add support for
9138 X509_NAME_print_ex() in 'req' and X509_print_ex() function
9139 to allow certificate printing to more controllable, additional
9140 'certopt' option to 'x509' to allow new printing options to be
9144 *) Clean old EAY MD5 hack from e_os.h.
9147 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
9149 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
9150 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
9151 [Joe Orton, Steve Henson]
9153 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
9155 *) Fix additional bug revealed by the NISCC test suite:
9157 Stop bug triggering large recursion when presented with
9158 certain ASN.1 tags (CVE-2003-0851)
9161 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
9163 *) Fix various bugs revealed by running the NISCC test suite:
9165 Stop out of bounds reads in the ASN1 code when presented with
9166 invalid tags (CVE-2003-0543 and CVE-2003-0544).
9168 If verify callback ignores invalid public key errors don't try to check
9169 certificate signature with the NULL public key.
9173 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
9174 if the server requested one: as stated in TLS 1.0 and SSL 3.0
9178 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
9179 extra data after the compression methods not only for TLS 1.0
9180 but also for SSL 3.0 (as required by the specification).
9181 [Bodo Moeller; problem pointed out by Matthias Loepfe]
9183 *) Change X509_certificate_type() to mark the key as exported/exportable
9184 when it's 512 *bits* long, not 512 bytes.
9187 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
9189 *) Countermeasure against the Klima-Pokorny-Rosa extension of
9190 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
9191 a protocol version number mismatch like a decryption error
9192 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
9195 *) Turn on RSA blinding by default in the default implementation
9196 to avoid a timing attack. Applications that don't want it can call
9197 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
9198 They would be ill-advised to do so in most cases.
9199 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
9201 *) Change RSA blinding code so that it works when the PRNG is not
9202 seeded (in this case, the secret RSA exponent is abused as
9203 an unpredictable seed -- if it is not unpredictable, there
9204 is no point in blinding anyway). Make RSA blinding thread-safe
9205 by remembering the creator's thread ID in rsa->blinding and
9206 having all other threads use local one-time blinding factors
9207 (this requires more computation than sharing rsa->blinding, but
9208 avoids excessive locking; and if an RSA object is not shared
9209 between threads, blinding will still be very fast).
9212 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
9214 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
9215 via timing by performing a MAC computation even if incorrect
9216 block cipher padding has been found. This is a countermeasure
9217 against active attacks where the attacker has to distinguish
9218 between bad padding and a MAC verification error. (CVE-2003-0078)
9220 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
9221 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
9222 Martin Vuagnoux (EPFL, Ilion)]
9224 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
9226 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
9227 memory from its contents. This is done with a counter that will
9228 place alternating values in each byte. This can be used to solve
9229 two issues: 1) the removal of calls to memset() by highly optimizing
9230 compilers, and 2) cleansing with other values than 0, since those can
9231 be read through on certain media, for example a swap space on disk.
9234 *) Bugfix: client side session caching did not work with external caching,
9235 because the session->cipher setting was not restored when reloading
9236 from the external cache. This problem was masked, when
9237 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
9238 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
9241 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
9242 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
9243 [Zeev Lieber <zeev-l@yahoo.com>]
9245 *) Undo an undocumented change introduced in 0.9.6e which caused
9246 repeated calls to OpenSSL_add_all_ciphers() and
9247 OpenSSL_add_all_digests() to be ignored, even after calling
9251 *) Change the default configuration reader to deal with last line not
9252 being properly terminated.
9255 *) Change X509_NAME_cmp() so it applies the special rules on handling
9256 DN values that are of type PrintableString, as well as RDNs of type
9257 emailAddress where the value has the type ia5String.
9258 [stefank@valicert.com via Richard Levitte]
9260 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
9261 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
9262 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
9263 the bitwise-OR of the two for use by the majority of applications
9264 wanting this behaviour, and update the docs. The documented
9265 behaviour and actual behaviour were inconsistent and had been
9266 changing anyway, so this is more a bug-fix than a behavioural
9268 [Geoff Thorpe, diagnosed by Nadav Har'El]
9270 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
9271 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
9274 *) Fix initialization code race conditions in
9275 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
9276 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
9277 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
9278 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
9279 ssl2_get_cipher_by_char(),
9280 ssl3_get_cipher_by_char().
9281 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
9283 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
9284 the cached sessions are flushed, as the remove_cb() might use ex_data
9285 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
9286 (see [openssl.org #212]).
9287 [Geoff Thorpe, Lutz Jaenicke]
9289 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
9290 length, instead of the encoding length to d2i_ASN1_OBJECT.
9293 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
9295 *) [In 0.9.6g-engine release:]
9296 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
9297 [Lynn Gazis <lgazis@rainbow.com>]
9299 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
9301 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
9302 and get fix the header length calculation.
9303 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
9304 Alon Kantor <alonk@checkpoint.com> (and others),
9307 *) Use proper error handling instead of 'assertions' in buffer
9308 overflow checks added in 0.9.6e. This prevents DoS (the
9309 assertions could call abort()).
9310 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
9312 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
9314 *) Add various sanity checks to asn1_get_length() to reject
9315 the ASN1 length bytes if they exceed sizeof(long), will appear
9316 negative or the content length exceeds the length of the
9318 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
9320 *) Fix cipher selection routines: ciphers without encryption had no flags
9321 for the cipher strength set and where therefore not handled correctly
9322 by the selection routines (PR #130).
9325 *) Fix EVP_dsa_sha macro.
9329 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
9330 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
9331 that was added in OpenSSL 0.9.6d.
9333 As the countermeasure turned out to be incompatible with some
9334 broken SSL implementations, the new option is part of SSL_OP_ALL.
9335 SSL_OP_ALL is usually employed when compatibility with weird SSL
9336 implementations is desired (e.g. '-bugs' option to 's_client' and
9337 's_server'), so the new option is automatically set in many
9341 *) Changes in security patch:
9343 Changes marked "(CHATS)" were sponsored by the Defense Advanced
9344 Research Projects Agency (DARPA) and Air Force Research Laboratory,
9345 Air Force Materiel Command, USAF, under agreement number
9348 *) Add various sanity checks to asn1_get_length() to reject
9349 the ASN1 length bytes if they exceed sizeof(long), will appear
9350 negative or the content length exceeds the length of the
9351 supplied buffer. (CVE-2002-0659)
9352 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
9354 *) Assertions for various potential buffer overflows, not known to
9356 [Ben Laurie (CHATS)]
9358 *) Various temporary buffers to hold ASCII versions of integers were
9359 too small for 64 bit platforms. (CVE-2002-0655)
9360 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
9362 *) Remote buffer overflow in SSL3 protocol - an attacker could
9363 supply an oversized session ID to a client. (CVE-2002-0656)
9364 [Ben Laurie (CHATS)]
9366 *) Remote buffer overflow in SSL2 protocol - an attacker could
9367 supply an oversized client master key. (CVE-2002-0656)
9368 [Ben Laurie (CHATS)]
9370 Changes between 0.9.6c and 0.9.6d [9 May 2002]
9372 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
9373 encoded as NULL) with id-dsa-with-sha1.
9374 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
9376 *) Check various X509_...() return values in apps/req.c.
9377 [Nils Larsch <nla@trustcenter.de>]
9379 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
9380 an end-of-file condition would erroneously be flagged, when the CRLF
9381 was just at the end of a processed block. The bug was discovered when
9382 processing data through a buffering memory BIO handing the data to a
9383 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
9384 <ptsekov@syntrex.com> and Nedelcho Stanev.
9387 *) Implement a countermeasure against a vulnerability recently found
9388 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
9389 before application data chunks to avoid the use of known IVs
9390 with data potentially chosen by the attacker.
9393 *) Fix length checks in ssl3_get_client_hello().
9396 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
9397 to prevent ssl3_read_internal() from incorrectly assuming that
9398 ssl3_read_bytes() found application data while handshake
9399 processing was enabled when in fact s->s3->in_read_app_data was
9400 merely automatically cleared during the initial handshake.
9401 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
9403 *) Fix object definitions for Private and Enterprise: they were not
9404 recognized in their shortname (=lowercase) representation. Extend
9405 obj_dat.pl to issue an error when using undefined keywords instead
9406 of silently ignoring the problem (Svenning Sorensen
9407 <sss@sss.dnsalias.net>).
9410 *) Fix DH_generate_parameters() so that it works for 'non-standard'
9411 generators, i.e. generators other than 2 and 5. (Previously, the
9412 code did not properly initialise the 'add' and 'rem' values to
9413 BN_generate_prime().)
9415 In the new general case, we do not insist that 'generator' is
9416 actually a primitive root: This requirement is rather pointless;
9417 a generator of the order-q subgroup is just as good, if not
9421 *) Map new X509 verification errors to alerts. Discovered and submitted by
9422 Tom Wu <tom@arcot.com>.
9425 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
9426 returning non-zero before the data has been completely received
9427 when using non-blocking I/O.
9428 [Bodo Moeller; problem pointed out by John Hughes]
9430 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
9431 [Ben Laurie, Lutz Jaenicke]
9433 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
9434 Yoram Zahavi <YoramZ@gilian.com>).
9437 *) Add information about CygWin 1.3 and on, and preserve proper
9438 configuration for the versions before that.
9439 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
9441 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
9442 check whether we deal with a copy of a session and do not delete from
9443 the cache in this case. Problem reported by "Izhar Shoshani Levi"
9444 <izhar@checkpoint.com>.
9447 *) Do not store session data into the internal session cache, if it
9448 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
9449 flag is set). Proposed by Aslam <aslam@funk.com>.
9452 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
9456 *) [In 0.9.6d-engine release:]
9457 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
9458 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
9460 *) Add the configuration target linux-s390x.
9461 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
9463 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
9464 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
9465 variable as an indication that a ClientHello message has been
9466 received. As the flag value will be lost between multiple
9467 invocations of ssl3_accept when using non-blocking I/O, the
9468 function may not be aware that a handshake has actually taken
9469 place, thus preventing a new session from being added to the
9472 To avoid this problem, we now set s->new_session to 2 instead of
9473 using a local variable.
9474 [Lutz Jaenicke, Bodo Moeller]
9476 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
9477 if the SSL_R_LENGTH_MISMATCH error is detected.
9478 [Geoff Thorpe, Bodo Moeller]
9480 *) New 'shared_ldflag' column in Configure platform table.
9483 *) Fix EVP_CIPHER_mode macro.
9484 ["Dan S. Camper" <dan@bti.net>]
9486 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
9487 type, we must throw them away by setting rr->length to 0.
9488 [D P Chang <dpc@qualys.com>]
9490 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
9492 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
9493 <Dominikus.Scherkl@biodata.com>. (The previous implementation
9494 worked incorrectly for those cases where range = 10..._2 and
9495 3*range is two bits longer than range.)
9498 *) Only add signing time to PKCS7 structures if it is not already
9502 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
9503 OBJ_ld_ce should be OBJ_id_ce.
9504 Also some ip-pda OIDs in crypto/objects/objects.txt were
9505 incorrect (cf. RFC 3039).
9506 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
9508 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
9509 returns early because it has nothing to do.
9510 [Andy Schneider <andy.schneider@bjss.co.uk>]
9512 *) [In 0.9.6c-engine release:]
9513 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
9514 [Andy Schneider <andy.schneider@bjss.co.uk>]
9516 *) [In 0.9.6c-engine release:]
9517 Add support for Cryptographic Appliance's keyserver technology.
9518 (Use engine 'keyclient')
9519 [Cryptographic Appliances and Geoff Thorpe]
9521 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
9522 is called via tools/c89.sh because arguments have to be
9523 rearranged (all '-L' options must appear before the first object
9525 [Richard Shapiro <rshapiro@abinitio.com>]
9527 *) [In 0.9.6c-engine release:]
9528 Add support for Broadcom crypto accelerator cards, backported
9530 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
9532 *) [In 0.9.6c-engine release:]
9533 Add support for SureWare crypto accelerator cards from
9534 Baltimore Technologies. (Use engine 'sureware')
9535 [Baltimore Technologies and Mark Cox]
9537 *) [In 0.9.6c-engine release:]
9538 Add support for crypto accelerator cards from Accelerated
9539 Encryption Processing, www.aep.ie. (Use engine 'aep')
9540 [AEP Inc. and Mark Cox]
9542 *) Add a configuration entry for gcc on UnixWare.
9543 [Gary Benson <gbenson@redhat.com>]
9545 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
9546 messages are stored in a single piece (fixed-length part and
9547 variable-length part combined) and fix various bugs found on the way.
9550 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
9551 instead. BIO_gethostbyname() does not know what timeouts are
9552 appropriate, so entries would stay in cache even when they have
9554 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
9556 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
9557 faced with a pathologically small ClientHello fragment that does
9558 not contain client_version: Instead of aborting with an error,
9559 simply choose the highest available protocol version (i.e.,
9560 TLS 1.0 unless it is disabled). In practice, ClientHello
9561 messages are never sent like this, but this change gives us
9562 strictly correct behaviour at least for TLS.
9565 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
9566 never resets s->method to s->ctx->method when called from within
9567 one of the SSL handshake functions.
9568 [Bodo Moeller; problem pointed out by Niko Baric]
9570 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
9571 (sent using the client's version number) if client_version is
9572 smaller than the protocol version in use. Also change
9573 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
9574 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
9575 the client will at least see that alert.
9578 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
9582 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
9583 client receives HelloRequest while in a handshake.
9584 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
9586 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
9587 should end in 'break', not 'goto end' which circumvents various
9588 cleanups done in state SSL_ST_OK. But session related stuff
9589 must be disabled for SSL_ST_OK in the case that we just sent a
9592 Also avoid some overhead by not calling ssl_init_wbio_buffer()
9593 before just sending a HelloRequest.
9594 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
9596 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
9597 reveal whether illegal block cipher padding was found or a MAC
9598 verification error occurred. (Neither SSLerr() codes nor alerts
9599 are directly visible to potential attackers, but the information
9600 may leak via logfiles.)
9602 Similar changes are not required for the SSL 2.0 implementation
9603 because the number of padding bytes is sent in clear for SSL 2.0,
9604 and the extra bytes are just ignored. However ssl/s2_pkt.c
9605 failed to verify that the purported number of padding bytes is in
9609 *) Add OpenUNIX-8 support including shared libraries
9610 (Boyd Lynn Gerber <gerberb@zenez.com>).
9613 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
9614 'wristwatch attack' using huge encoding parameters (cf.
9615 James H. Manger's CRYPTO 2001 paper). Note that the
9616 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
9617 encoding parameters and hence was not vulnerable.
9620 *) BN_sqr() bug fix.
9621 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
9623 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
9624 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
9625 followed by modular reduction.
9626 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
9628 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
9629 equivalent based on BN_pseudo_rand() instead of BN_rand().
9632 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
9633 This function was broken, as the check for a new client hello message
9634 to handle SGC did not allow these large messages.
9635 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
9638 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
9641 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
9642 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
9645 *) Rework the configuration and shared library support for Tru64 Unix.
9646 The configuration part makes use of modern compiler features and
9647 still retains old compiler behavior for those that run older versions
9648 of the OS. The shared library support part includes a variant that
9649 uses the RPATH feature, and is available through the special
9650 configuration target "alpha-cc-rpath", which will never be selected
9652 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
9654 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
9655 with the same message size as in ssl3_get_certificate_request().
9656 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
9657 messages might inadvertently be reject as too long.
9658 [Petr Lampa <lampa@fee.vutbr.cz>]
9660 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
9663 *) Modified SSL library such that the verify_callback that has been set
9664 specificly for an SSL object with SSL_set_verify() is actually being
9665 used. Before the change, a verify_callback set with this function was
9666 ignored and the verify_callback() set in the SSL_CTX at the time of
9667 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
9668 to allow the necessary settings.
9671 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
9672 explicitly to NULL, as at least on Solaris 8 this seems not always to be
9673 done automatically (in contradiction to the requirements of the C
9674 standard). This made problems when used from OpenSSH.
9677 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
9678 dh->length and always used
9680 BN_rand_range(priv_key, dh->p).
9682 BN_rand_range() is not necessary for Diffie-Hellman, and this
9683 specific range makes Diffie-Hellman unnecessarily inefficient if
9684 dh->length (recommended exponent length) is much smaller than the
9685 length of dh->p. We could use BN_rand_range() if the order of
9686 the subgroup was stored in the DH structure, but we only have
9691 BN_rand(priv_key, l, ...)
9693 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
9699 RSA_eay_public_encrypt
9700 RSA_eay_private_decrypt
9701 RSA_eay_private_encrypt (signing)
9702 RSA_eay_public_decrypt (signature verification)
9704 (default implementations for RSA_public_encrypt,
9705 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
9706 always reject numbers >= n.
9709 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
9710 to synchronize access to 'locking_thread'. This is necessary on
9711 systems where access to 'locking_thread' (an 'unsigned long'
9712 variable) is not atomic.
9715 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
9716 *before* setting the 'crypto_lock_rand' flag. The previous code had
9717 a race condition if 0 is a valid thread ID.
9718 [Travis Vitek <vitek@roguewave.com>]
9720 *) Add support for shared libraries under Irix.
9721 [Albert Chin-A-Young <china@thewrittenword.com>]
9723 *) Add configuration option to build on Linux on both big-endian and
9725 [Ralf Baechle <ralf@uni-koblenz.de>]
9727 *) Add the possibility to create shared libraries on HP-UX.
9730 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
9732 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
9733 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
9734 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
9735 PRNG state recovery was possible based on the output of
9736 one PRNG request appropriately sized to gain knowledge on
9737 'md' followed by enough consecutive 1-byte PRNG requests
9738 to traverse all of 'state'.
9740 1. When updating 'md_local' (the current thread's copy of 'md')
9741 during PRNG output generation, hash all of the previous
9742 'md_local' value, not just the half used for PRNG output.
9744 2. Make the number of bytes from 'state' included into the hash
9745 independent from the number of PRNG bytes requested.
9747 The first measure alone would be sufficient to avoid
9748 Markku-Juhani's attack. (Actually it had never occurred
9749 to me that the half of 'md_local' used for chaining was the
9750 half from which PRNG output bytes were taken -- I had always
9751 assumed that the secret half would be used.) The second
9752 measure makes sure that additional data from 'state' is never
9753 mixed into 'md_local' in small portions; this heuristically
9754 further strengthens the PRNG.
9757 *) Fix crypto/bn/asm/mips3.s.
9760 *) When only the key is given to "enc", the IV is undefined. Print out
9761 an error message in this case.
9764 *) Handle special case when X509_NAME is empty in X509 printing routines.
9767 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
9768 positive and less than q.
9771 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
9772 used: it isn't thread safe and the add_lock_callback should handle
9774 [Paul Rose <Paul.Rose@bridge.com>]
9776 *) Verify that incoming data obeys the block size in
9777 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
9781 [Ulf Möller, Bodo Möller]
9783 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
9784 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
9785 when fixing the server behaviour for backwards-compatible 'client
9786 hello' messages. (Note that the attack is impractical against
9787 SSL 3.0 and TLS 1.0 anyway because length and version checking
9788 means that the probability of guessing a valid ciphertext is
9789 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
9792 Before 0.9.5, the countermeasure (hide the error by generating a
9793 random 'decryption result') did not work properly because
9794 ERR_clear_error() was missing, meaning that SSL_get_error() would
9795 detect the supposedly ignored error.
9797 Both problems are now fixed.
9800 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
9801 (previously it was 1024).
9804 *) Fix for compatibility mode trust settings: ignore trust settings
9805 unless some valid trust or reject settings are present.
9808 *) Fix for blowfish EVP: its a variable length cipher.
9811 *) Fix various bugs related to DSA S/MIME verification. Handle missing
9812 parameters in DSA public key structures and return an error in the
9813 DSA routines if parameters are absent.
9816 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
9817 in the current directory if neither $RANDFILE nor $HOME was set.
9818 RAND_file_name() in 0.9.6a returned NULL in this case. This has
9819 caused some confusion to Windows users who haven't defined $HOME.
9820 Thus RAND_file_name() is changed again: e_os.h can define a
9821 DEFAULT_HOME, which will be used if $HOME is not set.
9822 For Windows, we use "C:"; on other platforms, we still require
9823 environment variables.
9825 *) Move 'if (!initialized) RAND_poll()' into regions protected by
9826 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
9827 having multiple threads call RAND_poll() concurrently.
9830 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
9831 combination of a flag and a thread ID variable.
9832 Otherwise while one thread is in ssleay_rand_bytes (which sets the
9833 flag), *other* threads can enter ssleay_add_bytes without obeying
9834 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
9835 that they do not hold after the first thread unsets add_do_not_lock).
9838 *) Change bctest again: '-x' expressions are not available in all
9842 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
9844 *) Fix a couple of memory leaks in PKCS7_dataDecode()
9845 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
9847 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
9848 the default extension for executables, if any. Also, make the perl
9849 scripts that use symlink() to test if it really exists and use "cp"
9850 if it doesn't. All this made OpenSSL compilable and installable in
9854 *) Fix for asn1_GetSequence() for indefinite length constructed data.
9855 If SEQUENCE is length is indefinite just set c->slen to the total
9856 amount of data available.
9857 [Steve Henson, reported by shige@FreeBSD.org]
9858 [This change does not apply to 0.9.7.]
9860 *) Change bctest to avoid here-documents inside command substitution
9861 (workaround for FreeBSD /bin/sh bug).
9862 For compatibility with Ultrix, avoid shell functions (introduced
9863 in the bctest version that searches along $PATH).
9866 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
9867 with des_encrypt() defined on some operating systems, like Solaris
9871 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
9872 On the Importance of Eliminating Errors in Cryptographic
9873 Computations, J. Cryptology 14 (2001) 2, 101-119,
9874 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
9877 *) MIPS assembler BIGNUM division bug fix.
9880 *) Disabled incorrect Alpha assembler code.
9883 *) Fix PKCS#7 decode routines so they correctly update the length
9884 after reading an EOC for the EXPLICIT tag.
9886 [This change does not apply to 0.9.7.]
9888 *) Fix bug in PKCS#12 key generation routines. This was triggered
9889 if a 3DES key was generated with a 0 initial byte. Include
9890 PKCS12_BROKEN_KEYGEN compilation option to retain the old
9891 (but broken) behaviour.
9894 *) Enhance bctest to search for a working bc along $PATH and print
9896 [Tim Rice <tim@multitalents.net> via Richard Levitte]
9898 *) Fix memory leaks in err.c: free err_data string if necessary;
9899 don't write to the wrong index in ERR_set_error_data.
9902 *) Implement ssl23_peek (analogous to ssl23_read), which previously
9906 *) Replace rdtsc with _emit statements for VC++ version 5.
9907 [Jeremy Cooper <jeremy@baymoo.org>]
9909 *) Make it possible to reuse SSLv2 sessions.
9912 *) In copy_email() check for >= 0 as a return value for
9913 X509_NAME_get_index_by_NID() since 0 is a valid index.
9914 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
9916 *) Avoid coredump with unsupported or invalid public keys by checking if
9917 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
9918 PKCS7_verify() fails with non detached data.
9921 *) Don't use getenv in library functions when run as setuid/setgid.
9922 New function OPENSSL_issetugid().
9925 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
9926 due to incorrect handling of multi-threading:
9928 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
9930 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
9932 3. Count how many times MemCheck_off() has been called so that
9933 nested use can be treated correctly. This also avoids
9934 inband-signalling in the previous code (which relied on the
9935 assumption that thread ID 0 is impossible).
9938 *) Add "-rand" option also to s_client and s_server.
9941 *) Fix CPU detection on Irix 6.x.
9942 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
9943 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
9945 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
9948 [This change does not apply to 0.9.7.]
9950 *) Use the cached encoding of an X509_NAME structure rather than
9951 copying it. This is apparently the reason for the libsafe "errors"
9952 but the code is actually correct.
9955 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
9956 Bleichenbacher's DSA attack.
9957 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
9958 to be set and top=0 forces the highest bit to be set; top=-1 is new
9959 and leaves the highest bit random.
9960 [Ulf Moeller, Bodo Moeller]
9962 *) In the NCONF_...-based implementations for CONF_... queries
9963 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
9964 a temporary CONF structure with the data component set to NULL
9965 (which gives segmentation faults in lh_retrieve).
9966 Instead, use NULL for the CONF pointer in CONF_get_string and
9967 CONF_get_number (which may use environment variables) and directly
9968 return NULL from CONF_get_section.
9971 *) Fix potential buffer overrun for EBCDIC.
9974 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
9975 keyUsage if basicConstraints absent for a CA.
9978 *) Make SMIME_write_PKCS7() write mail header values with a format that
9979 is more generally accepted (no spaces before the semicolon), since
9980 some programs can't parse those values properly otherwise. Also make
9981 sure BIO's that break lines after each write do not create invalid
9985 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
9986 macros previously used would not encode an empty SEQUENCE OF
9987 and break the signature.
9989 [This change does not apply to 0.9.7.]
9991 *) Zero the premaster secret after deriving the master secret in
9995 *) Add some EVP_add_digest_alias registrations (as found in
9996 OpenSSL_add_all_digests()) to SSL_library_init()
9997 aka OpenSSL_add_ssl_algorithms(). This provides improved
9998 compatibility with peers using X.509 certificates
9999 with unconventional AlgorithmIdentifier OIDs.
10002 *) Fix for Irix with NO_ASM.
10003 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
10005 *) ./config script fixes.
10006 [Ulf Moeller, Richard Levitte]
10008 *) Fix 'openssl passwd -1'.
10011 *) Change PKCS12_key_gen_asc() so it can cope with non null
10012 terminated strings whose length is passed in the passlen
10013 parameter, for example from PEM callbacks. This was done
10014 by adding an extra length parameter to asc2uni().
10015 [Steve Henson, reported by <oddissey@samsung.co.kr>]
10017 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
10018 call failed, free the DSA structure.
10021 *) Fix to uni2asc() to cope with zero length Unicode strings.
10022 These are present in some PKCS#12 files.
10025 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
10026 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
10027 when writing a 32767 byte record.
10028 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
10030 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
10031 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
10033 (RSA objects have a reference count access to which is protected
10034 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
10035 so they are meant to be shared between threads.)
10036 [Bodo Moeller, Geoff Thorpe; original patch submitted by
10037 "Reddie, Steven" <Steven.Reddie@ca.com>]
10039 *) Fix a deadlock in CRYPTO_mem_leaks().
10042 *) Use better test patterns in bntest.
10045 *) rand_win.c fix for Borland C.
10048 *) BN_rshift bugfix for n == 0.
10051 *) Add a 'bctest' script that checks for some known 'bc' bugs
10052 so that 'make test' does not abort just because 'bc' is broken.
10055 *) Store verify_result within SSL_SESSION also for client side to
10056 avoid potential security hole. (Re-used sessions on the client side
10057 always resulted in verify_result==X509_V_OK, not using the original
10058 result of the server certificate verification.)
10061 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
10062 SSL3_RT_APPLICATION_DATA, return 0.
10063 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
10067 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
10068 releases, have been re-implemented by renaming the previous
10069 implementations of ssl2_read and ssl3_read to ssl2_read_internal
10070 and ssl3_read_internal, respectively, and adding 'peek' parameters
10071 to them. The new ssl[23]_{read,peek} functions are calls to
10072 ssl[23]_read_internal with the 'peek' flag set appropriately.
10073 A 'peek' parameter has also been added to ssl3_read_bytes, which
10074 does the actual work for ssl3_read_internal.
10077 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
10078 the method-specific "init()" handler. Also clean up ex_data after
10079 calling the method-specific "finish()" handler. Previously, this was
10080 happening the other way round.
10083 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
10084 The previous value, 12, was not always sufficient for BN_mod_exp().
10087 *) Make sure that shared libraries get the internal name engine with
10088 the full version number and not just 0. This should mark the
10089 shared libraries as not backward compatible. Of course, this should
10090 be changed again when we can guarantee backward binary compatibility.
10093 *) Fix typo in get_cert_by_subject() in by_dir.c
10094 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
10096 *) Rework the system to generate shared libraries:
10098 - Make note of the expected extension for the shared libraries and
10099 if there is a need for symbolic links from for example libcrypto.so.0
10100 to libcrypto.so.0.9.7. There is extended info in Configure for
10103 - Make as few rebuilds of the shared libraries as possible.
10105 - Still avoid linking the OpenSSL programs with the shared libraries.
10107 - When installing, install the shared libraries separately from the
10111 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
10113 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
10114 and not in SSL_clear because the latter is also used by the
10115 accept/connect functions; previously, the settings made by
10116 SSL_set_read_ahead would be lost during the handshake.
10117 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
10119 *) Correct util/mkdef.pl to be selective about disabled algorithms.
10120 Previously, it would create entries for disabled algorithms no
10124 *) Added several new manual pages for SSL_* function.
10127 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
10129 *) In ssl23_get_client_hello, generate an error message when faced
10130 with an initial SSL 3.0/TLS record that is too small to contain the
10131 first two bytes of the ClientHello message, i.e. client_version.
10132 (Note that this is a pathologic case that probably has never happened
10133 in real life.) The previous approach was to use the version number
10134 from the record header as a substitute; but our protocol choice
10135 should not depend on that one because it is not authenticated
10136 by the Finished messages.
10139 *) More robust randomness gathering functions for Windows.
10140 [Jeffrey Altman <jaltman@columbia.edu>]
10142 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
10143 not set then we don't setup the error code for issuer check errors
10144 to avoid possibly overwriting other errors which the callback does
10145 handle. If an application does set the flag then we assume it knows
10146 what it is doing and can handle the new informational codes
10150 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
10151 a general "ANY" type, as such it should be able to decode anything
10152 including tagged types. However it didn't check the class so it would
10153 wrongly interpret tagged types in the same way as their universal
10154 counterpart and unknown types were just rejected. Changed so that the
10155 tagged and unknown types are handled in the same way as a SEQUENCE:
10156 that is the encoding is stored intact. There is also a new type
10157 "V_ASN1_OTHER" which is used when the class is not universal, in this
10158 case we have no idea what the actual type is so we just lump them all
10162 *) On VMS, stdout may very well lead to a file that is written to
10163 in a record-oriented fashion. That means that every write() will
10164 write a separate record, which will be read separately by the
10165 programs trying to read from it. This can be very confusing.
10167 The solution is to put a BIO filter in the way that will buffer
10168 text until a linefeed is reached, and then write everything a
10169 line at a time, so every record written will be an actual line,
10170 not chunks of lines and not (usually doesn't happen, but I've
10171 seen it once) several lines in one record. BIO_f_linebuffer() is
10174 Currently, it's a VMS-only method, because that's where it has
10175 been tested well enough.
10178 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
10179 it can return incorrect results.
10180 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
10181 but it was in 0.9.6-beta[12].)
10184 *) Disable the check for content being present when verifying detached
10185 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
10186 include zero length content when signing messages.
10189 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
10190 BIO_ctrl (for BIO pairs).
10193 *) Add DSO method for VMS.
10196 *) Bug fix: Montgomery multiplication could produce results with the
10200 *) Add RPM specification openssl.spec and modify it to build three
10201 packages. The default package contains applications, application
10202 documentation and run-time libraries. The devel package contains
10203 include files, static libraries and function documentation. The
10204 doc package contains the contents of the doc directory. The original
10205 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
10208 *) Add a large number of documentation files for many SSL routines.
10209 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
10211 *) Add a configuration entry for Sony News 4.
10212 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
10214 *) Don't set the two most significant bits to one when generating a
10215 random number < q in the DSA library.
10218 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
10219 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
10220 the underlying transport is blocking) if a handshake took place.
10221 (The default behaviour is needed by applications such as s_client
10222 and s_server that use select() to determine when to use SSL_read;
10223 but for applications that know in advance when to expect data, it
10224 just makes things more complicated.)
10227 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
10231 *) Add a few more EBCDIC conditionals that make `req' and `x509'
10232 work better on such systems.
10233 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
10235 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
10236 Update PKCS12_parse() so it copies the friendlyName and the
10237 keyid to the certificates aux info.
10240 *) Fix bug in PKCS7_verify() which caused an infinite loop
10241 if there was more than one signature.
10242 [Sven Uszpelkat <su@celocom.de>]
10244 *) Major change in util/mkdef.pl to include extra information
10245 about each symbol, as well as presenting variables as well
10246 as functions. This change means that there's n more need
10247 to rebuild the .num files when some algorithms are excluded.
10250 *) Allow the verify time to be set by an application,
10251 rather than always using the current time.
10254 *) Phase 2 verify code reorganisation. The certificate
10255 verify code now looks up an issuer certificate by a
10256 number of criteria: subject name, authority key id
10257 and key usage. It also verifies self signed certificates
10258 by the same criteria. The main comparison function is
10259 X509_check_issued() which performs these checks.
10261 Lot of changes were necessary in order to support this
10262 without completely rewriting the lookup code.
10264 Authority and subject key identifier are now cached.
10266 The LHASH 'certs' is X509_STORE has now been replaced
10267 by a STACK_OF(X509_OBJECT). This is mainly because an
10268 LHASH can't store or retrieve multiple objects with
10269 the same hash value.
10271 As a result various functions (which were all internal
10272 use only) have changed to handle the new X509_STORE
10273 structure. This will break anything that messed round
10274 with X509_STORE internally.
10276 The functions X509_STORE_add_cert() now checks for an
10277 exact match, rather than just subject name.
10279 The X509_STORE API doesn't directly support the retrieval
10280 of multiple certificates matching a given criteria, however
10281 this can be worked round by performing a lookup first
10282 (which will fill the cache with candidate certificates)
10283 and then examining the cache for matches. This is probably
10284 the best we can do without throwing out X509_LOOKUP
10285 entirely (maybe later...).
10287 The X509_VERIFY_CTX structure has been enhanced considerably.
10289 All certificate lookup operations now go via a get_issuer()
10290 callback. Although this currently uses an X509_STORE it
10291 can be replaced by custom lookups. This is a simple way
10292 to bypass the X509_STORE hackery necessary to make this
10293 work and makes it possible to use more efficient techniques
10294 in future. A very simple version which uses a simple
10295 STACK for its trusted certificate store is also provided
10296 using X509_STORE_CTX_trusted_stack().
10298 The verify_cb() and verify() callbacks now have equivalents
10299 in the X509_STORE_CTX structure.
10301 X509_STORE_CTX also has a 'flags' field which can be used
10302 to customise the verify behaviour.
10305 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
10306 excludes S/MIME capabilities.
10309 *) When a certificate request is read in keep a copy of the
10310 original encoding of the signed data and use it when outputting
10311 again. Signatures then use the original encoding rather than
10312 a decoded, encoded version which may cause problems if the
10313 request is improperly encoded.
10316 *) For consistency with other BIO_puts implementations, call
10317 buffer_write(b, ...) directly in buffer_puts instead of calling
10320 In BIO_puts, increment b->num_write as in BIO_write.
10321 [Peter.Sylvester@EdelWeb.fr]
10323 *) Fix BN_mul_word for the case where the word is 0. (We have to use
10324 BN_zero, we may not return a BIGNUM with an array consisting of
10325 words set to zero.)
10328 *) Avoid calling abort() from within the library when problems are
10329 detected, except if preprocessor symbols have been defined
10330 (such as REF_CHECK, BN_DEBUG etc.).
10333 *) New openssl application 'rsautl'. This utility can be
10334 used for low level RSA operations. DER public key
10335 BIO/fp routines also added.
10338 *) New Configure entry and patches for compiling on QNX 4.
10339 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
10341 *) A demo state-machine implementation was sponsored by
10342 Nuron (http://www.nuron.com/) and is now available in
10343 demos/state_machine.
10346 *) New options added to the 'dgst' utility for signature
10347 generation and verification.
10350 *) Unrecognized PKCS#7 content types are now handled via a
10351 catch all ASN1_TYPE structure. This allows unsupported
10352 types to be stored as a "blob" and an application can
10353 encode and decode it manually.
10356 *) Fix various signed/unsigned issues to make a_strex.c
10357 compile under VC++.
10358 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
10360 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
10361 length if passed a buffer. ASN1_INTEGER_to_BN failed
10362 if passed a NULL BN and its argument was negative.
10363 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
10365 *) Modification to PKCS#7 encoding routines to output definite
10366 length encoding. Since currently the whole structures are in
10367 memory there's not real point in using indefinite length
10368 constructed encoding. However if OpenSSL is compiled with
10369 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
10372 *) Added BIO_vprintf() and BIO_vsnprintf().
10375 *) Added more prefixes to parse for in the strings written
10376 through a logging bio, to cover all the levels that are available
10377 through syslog. The prefixes are now:
10379 PANIC, EMERG, EMR => LOG_EMERG
10380 ALERT, ALR => LOG_ALERT
10381 CRIT, CRI => LOG_CRIT
10382 ERROR, ERR => LOG_ERR
10383 WARNING, WARN, WAR => LOG_WARNING
10384 NOTICE, NOTE, NOT => LOG_NOTICE
10385 INFO, INF => LOG_INFO
10386 DEBUG, DBG => LOG_DEBUG
10388 and as before, if none of those prefixes are present at the
10389 beginning of the string, LOG_ERR is chosen.
10391 On Win32, the LOG_* levels are mapped according to this:
10393 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
10394 LOG_WARNING => EVENTLOG_WARNING_TYPE
10395 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
10399 *) Made it possible to reconfigure with just the configuration
10400 argument "reconf" or "reconfigure". The command line arguments
10401 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
10402 and are retrieved from there when reconfiguring.
10405 *) MD4 implemented.
10406 [Assar Westerlund <assar@sics.se>, Richard Levitte]
10408 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
10411 *) The obj_dat.pl script was messing up the sorting of object
10412 names. The reason was that it compared the quoted version
10413 of strings as a result "OCSP" > "OCSP Signing" because
10414 " > SPACE. Changed script to store unquoted versions of
10415 names and add quotes on output. It was also omitting some
10416 names from the lookup table if they were given a default
10417 value (that is if SN is missing it is given the same
10418 value as LN and vice versa), these are now added on the
10419 grounds that if an object has a name we should be able to
10420 look it up. Finally added warning output when duplicate
10421 short or long names are found.
10424 *) Changes needed for Tandem NSK.
10425 [Scott Uroff <scott@xypro.com>]
10427 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
10428 RSA_padding_check_SSLv23(), special padding was never detected
10429 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
10430 version rollback attacks was not effective.
10432 In s23_clnt.c, don't use special rollback-attack detection padding
10433 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
10434 client; similarly, in s23_srvr.c, don't do the rollback check if
10435 SSL 2.0 is the only protocol enabled in the server.
10438 *) Make it possible to get hexdumps of unprintable data with 'openssl
10439 asn1parse'. By implication, the functions ASN1_parse_dump() and
10440 BIO_dump_indent() are added.
10443 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
10444 these print out strings and name structures based on various
10445 flags including RFC2253 support and proper handling of
10446 multibyte characters. Added options to the 'x509' utility
10447 to allow the various flags to be set.
10450 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
10451 Also change the functions X509_cmp_current_time() and
10452 X509_gmtime_adj() work with an ASN1_TIME structure,
10453 this will enable certificates using GeneralizedTime in validity
10454 dates to be checked.
10457 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
10458 negative public key encodings) on by default,
10459 NO_NEG_PUBKEY_BUG can be set to disable it.
10462 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
10463 content octets. An i2c_ASN1_OBJECT is unnecessary because
10464 the encoding can be trivially obtained from the structure.
10467 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
10468 not read locks (CRYPTO_r_[un]lock).
10471 *) A first attempt at creating official support for shared
10472 libraries through configuration. I've kept it so the
10473 default is static libraries only, and the OpenSSL programs
10474 are always statically linked for now, but there are
10475 preparations for dynamic linking in place.
10476 This has been tested on Linux and Tru64.
10479 *) Randomness polling function for Win9x, as described in:
10480 Peter Gutmann, Software Generation of Practically Strong
10484 *) Fix so PRNG is seeded in req if using an already existing
10488 *) New options to smime application. -inform and -outform
10489 allow alternative formats for the S/MIME message including
10490 PEM and DER. The -content option allows the content to be
10491 specified separately. This should allow things like Netscape
10492 form signing output easier to verify.
10495 *) Fix the ASN1 encoding of tags using the 'long form'.
10498 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
10499 STRING types. These convert content octets to and from the
10500 underlying type. The actual tag and length octets are
10501 already assumed to have been read in and checked. These
10502 are needed because all other string types have virtually
10503 identical handling apart from the tag. By having versions
10504 of the ASN1 functions that just operate on content octets
10505 IMPLICIT tagging can be handled properly. It also allows
10506 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
10507 and ASN1_INTEGER are identical apart from the tag.
10510 *) Change the handling of OID objects as follows:
10512 - New object identifiers are inserted in objects.txt, following
10513 the syntax given in objects.README.
10514 - objects.pl is used to process obj_mac.num and create a new
10516 - obj_dat.pl is used to create a new obj_dat.h, using the data in
10519 This is currently kind of a hack, and the perl code in objects.pl
10520 isn't very elegant, but it works as I intended. The simplest way
10521 to check that it worked correctly is to look in obj_dat.h and
10522 check the array nid_objs and make sure the objects haven't moved
10523 around (this is important!). Additions are OK, as well as
10524 consistent name changes.
10527 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
10530 *) Addition of the command line parameter '-rand file' to 'openssl req'.
10531 The given file adds to whatever has already been seeded into the
10532 random pool through the RANDFILE configuration file option or
10533 environment variable, or the default random state file.
10536 *) mkstack.pl now sorts each macro group into lexical order.
10537 Previously the output order depended on the order the files
10538 appeared in the directory, resulting in needless rewriting
10542 *) Patches to make OpenSSL compile under Win32 again. Mostly
10543 work arounds for the VC++ problem that it treats func() as
10544 func(void). Also stripped out the parts of mkdef.pl that
10545 added extra typesafe functions: these no longer exist.
10548 *) Reorganisation of the stack code. The macros are now all
10549 collected in safestack.h . Each macro is defined in terms of
10550 a "stack macro" of the form SKM_<name>(type, a, b). The
10551 DEBUG_SAFESTACK is now handled in terms of function casts,
10552 this has the advantage of retaining type safety without the
10553 use of additional functions. If DEBUG_SAFESTACK is not defined
10554 then the non typesafe macros are used instead. Also modified the
10555 mkstack.pl script to handle the new form. Needs testing to see
10556 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
10557 the default if no major problems. Similar behaviour for ASN1_SET_OF
10558 and PKCS12_STACK_OF.
10561 *) When some versions of IIS use the 'NET' form of private key the
10562 key derivation algorithm is different. Normally MD5(password) is
10563 used as a 128 bit RC4 key. In the modified case
10564 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
10565 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
10566 as the old Netscape_RSA functions except they have an additional
10567 'sgckey' parameter which uses the modified algorithm. Also added
10568 an -sgckey command line option to the rsa utility. Thanks to
10569 Adrian Peck <bertie@ncipher.com> for posting details of the modified
10570 algorithm to openssl-dev.
10573 *) The evp_local.h macros were using 'c.##kname' which resulted in
10574 invalid expansion on some systems (SCO 5.0.5 for example).
10575 Corrected to 'c.kname'.
10576 [Phillip Porch <root@theporch.com>]
10578 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
10579 a STACK of email addresses from a certificate or request, these look
10580 in the subject name and the subject alternative name extensions and
10581 omit any duplicate addresses.
10584 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
10585 This makes DSA verification about 2 % faster.
10588 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
10589 (meaning that now 2^5 values will be precomputed, which is only 4 KB
10590 plus overhead for 1024 bit moduli).
10591 This makes exponentiations about 0.5 % faster for 1024 bit
10592 exponents (as measured by "openssl speed rsa2048").
10595 *) Rename memory handling macros to avoid conflicts with other
10597 Malloc => OPENSSL_malloc
10598 Malloc_locked => OPENSSL_malloc_locked
10599 Realloc => OPENSSL_realloc
10600 Free => OPENSSL_free
10603 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
10604 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
10607 *) CygWin32 support.
10608 [John Jarvie <jjarvie@newsguy.com>]
10610 *) The type-safe stack code has been rejigged. It is now only compiled
10611 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
10612 by default all type-specific stack functions are "#define"d back to
10613 standard stack functions. This results in more streamlined output
10614 but retains the type-safety checking possibilities of the original
10618 *) The STACK code has been cleaned up, and certain type declarations
10619 that didn't make a lot of sense have been brought in line. This has
10620 also involved a cleanup of sorts in safestack.h to more correctly
10621 map type-safe stack functions onto their plain stack counterparts.
10622 This work has also resulted in a variety of "const"ifications of
10623 lots of the code, especially "_cmp" operations which should normally
10624 be prototyped with "const" parameters anyway.
10627 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
10628 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
10629 (The PRNG state consists of two parts, the large pool 'state' and 'md',
10630 where all of 'md' is used each time the PRNG is used, but 'state'
10631 is used only indexed by a cyclic counter. As entropy may not be
10632 well distributed from the beginning, 'md' is important as a
10633 chaining variable. However, the output function chains only half
10634 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
10635 all of 'md', and seeding with STATE_SIZE dummy bytes will result
10636 in all of 'state' being rewritten, with the new values depending
10637 on virtually all of 'md'. This overcomes the 80 bit limitation.)
10640 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
10641 the handshake is continued after ssl_verify_cert_chain();
10642 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
10643 can lead to 'unexplainable' connection aborts later.
10644 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
10646 *) Major EVP API cipher revision.
10647 Add hooks for extra EVP features. This allows various cipher
10648 parameters to be set in the EVP interface. Support added for variable
10649 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
10650 setting of RC2 and RC5 parameters.
10652 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
10655 Remove lots of duplicated code from the EVP library. For example *every*
10656 cipher init() function handles the 'iv' in the same way according to the
10657 cipher mode. They also all do nothing if the 'key' parameter is NULL and
10658 for CFB and OFB modes they zero ctx->num.
10660 New functionality allows removal of S/MIME code RC2 hack.
10662 Most of the routines have the same form and so can be declared in terms
10665 By shifting this to the top level EVP_CipherInit() it can be removed from
10666 all individual ciphers. If the cipher wants to handle IVs or keys
10667 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
10670 Change lots of functions like EVP_EncryptUpdate() to now return a
10671 value: although software versions of the algorithms cannot fail
10672 any installed hardware versions can.
10675 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
10676 this option is set, tolerate broken clients that send the negotiated
10677 protocol version number instead of the requested protocol version
10681 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
10682 i.e. non-zero for export ciphersuites, zero otherwise.
10683 Previous versions had this flag inverted, inconsistent with
10684 rsa_tmp_cb (..._TMP_RSA_CB).
10685 [Bodo Moeller; problem reported by Amit Chopra]
10687 *) Add missing DSA library text string. Work around for some IIS
10688 key files with invalid SEQUENCE encoding.
10691 *) Add a document (doc/standards.txt) that list all kinds of standards
10692 and so on that are implemented in OpenSSL.
10695 *) Enhance c_rehash script. Old version would mishandle certificates
10696 with the same subject name hash and wouldn't handle CRLs at all.
10697 Added -fingerprint option to crl utility, to support new c_rehash
10701 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
10704 *) Fix for SSL server purpose checking. Server checking was
10705 rejecting certificates which had extended key usage present
10706 but no ssl client purpose.
10707 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
10709 *) Make PKCS#12 code work with no password. The PKCS#12 spec
10710 is a little unclear about how a blank password is handled.
10711 Since the password in encoded as a BMPString with terminating
10712 double NULL a zero length password would end up as just the
10713 double NULL. However no password at all is different and is
10714 handled differently in the PKCS#12 key generation code. NS
10715 treats a blank password as zero length. MSIE treats it as no
10716 password on export: but it will try both on import. We now do
10717 the same: PKCS12_parse() tries zero length and no password if
10718 the password is set to "" or NULL (NULL is now a valid password:
10719 it wasn't before) as does the pkcs12 application.
10722 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
10723 perror when PEM_read_bio_X509_REQ fails, the error message must
10724 be obtained from the error queue.
10727 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
10728 it in ERR_remove_state if appropriate, and change ERR_get_state
10729 accordingly to avoid race conditions (this is necessary because
10730 thread_hash is no longer constant once set).
10733 *) Bugfix for linux-elf makefile.one.
10736 *) RSA_get_default_method() will now cause a default
10737 RSA_METHOD to be chosen if one doesn't exist already.
10738 Previously this was only set during a call to RSA_new()
10739 or RSA_new_method(NULL) meaning it was possible for
10740 RSA_get_default_method() to return NULL.
10743 *) Added native name translation to the existing DSO code
10744 that will convert (if the flag to do so is set) filenames
10745 that are sufficiently small and have no path information
10746 into a canonical native form. Eg. "blah" converted to
10747 "libblah.so" or "blah.dll" etc.
10750 *) New function ERR_error_string_n(e, buf, len) which is like
10751 ERR_error_string(e, buf), but writes at most 'len' bytes
10752 including the 0 terminator. For ERR_error_string_n, 'buf'
10754 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
10756 *) CONF library reworked to become more general. A new CONF
10757 configuration file reader "class" is implemented as well as a
10758 new functions (NCONF_*, for "New CONF") to handle it. The now
10759 old CONF_* functions are still there, but are reimplemented to
10760 work in terms of the new functions. Also, a set of functions
10761 to handle the internal storage of the configuration data is
10762 provided to make it easier to write new configuration file
10763 reader "classes" (I can definitely see something reading a
10764 configuration file in XML format, for example), called _CONF_*,
10765 or "the configuration storage API"...
10767 The new configuration file reading functions are:
10769 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
10770 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
10772 NCONF_default, NCONF_WIN32
10774 NCONF_dump_fp, NCONF_dump_bio
10776 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
10777 NCONF_new creates a new CONF object. This works in the same way
10778 as other interfaces in OpenSSL, like the BIO interface.
10779 NCONF_dump_* dump the internal storage of the configuration file,
10780 which is useful for debugging. All other functions take the same
10781 arguments as the old CONF_* functions wth the exception of the
10782 first that must be a `CONF *' instead of a `LHASH *'.
10784 To make it easer to use the new classes with the old CONF_* functions,
10785 the function CONF_set_default_method is provided.
10788 *) Add '-tls1' option to 'openssl ciphers', which was already
10789 mentioned in the documentation but had not been implemented.
10790 (This option is not yet really useful because even the additional
10791 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
10794 *) Initial DSO code added into libcrypto for letting OpenSSL (and
10795 OpenSSL-based applications) load shared libraries and bind to
10796 them in a portable way.
10797 [Geoff Thorpe, with contributions from Richard Levitte]
10799 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
10801 *) Make sure _lrotl and _lrotr are only used with MSVC.
10803 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
10804 (the default implementation of RAND_status).
10806 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
10807 to '-clrext' (= clear extensions), as intended and documented.
10808 [Bodo Moeller; inconsistency pointed out by Michael Attili
10809 <attili@amaxo.com>]
10811 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
10812 was larger than the MD block size.
10813 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
10815 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
10816 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
10817 using the passed key: if the passed key was a private key the result
10818 of X509_print(), for example, would be to print out all the private key
10822 *) des_quad_cksum() byte order bug fix.
10823 [Ulf Möller, using the problem description in krb4-0.9.7, where
10824 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
10826 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
10828 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
10830 *) For easily testing in shell scripts whether some command
10831 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
10832 returns with exit code 0 iff no command of the given name is available.
10833 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
10834 the output goes to stdout and nothing is printed to stderr.
10835 Additional arguments are always ignored.
10837 Since for each cipher there is a command of the same name,
10838 the 'no-cipher' compilation switches can be tested this way.
10840 ('openssl no-XXX' is not able to detect pseudo-commands such
10841 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
10844 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
10847 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
10848 is set; it will be thrown away anyway because each handshake creates
10850 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
10851 to parameters -- in previous versions (since OpenSSL 0.9.3) the
10852 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
10853 you effectively got SSL_OP_SINGLE_DH_USE when using this macro.
10856 *) New s_client option -ign_eof: EOF at stdin is ignored, and
10857 'Q' and 'R' lose their special meanings (quit/renegotiate).
10858 This is part of what -quiet does; unlike -quiet, -ign_eof
10859 does not suppress any output.
10862 *) Add compatibility options to the purpose and trust code. The
10863 purpose X509_PURPOSE_ANY is "any purpose" which automatically
10864 accepts a certificate or CA, this was the previous behaviour,
10865 with all the associated security issues.
10867 X509_TRUST_COMPAT is the old trust behaviour: only and
10868 automatically trust self signed roots in certificate store. A
10869 new trust setting X509_TRUST_DEFAULT is used to specify that
10870 a purpose has no associated trust setting and it should instead
10871 use the value in the default purpose.
10874 *) Fix the PKCS#8 DSA private key code so it decodes keys again
10875 and fix a memory leak.
10878 *) In util/mkerr.pl (which implements 'make errors'), preserve
10879 reason strings from the previous version of the .c file, as
10880 the default to have only downcase letters (and digits) in
10881 automatically generated reasons codes is not always appropriate.
10884 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
10885 using strerror. Previously, ERR_reason_error_string() returned
10886 library names as reason strings for SYSerr; but SYSerr is a special
10887 case where small numbers are errno values, not library numbers.
10890 *) Add '-dsaparam' option to 'openssl dhparam' application. This
10891 converts DSA parameters into DH parameters. (When creating parameters,
10892 DSA_generate_parameters is used.)
10895 *) Include 'length' (recommended exponent length) in C code generated
10896 by 'openssl dhparam -C'.
10899 *) The second argument to set_label in perlasm was already being used
10900 so couldn't be used as a "file scope" flag. Moved to third argument
10904 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
10905 instead of RAND_bytes for encryption IVs and salts.
10908 *) Include RAND_status() into RAND_METHOD instead of implementing
10909 it only for md_rand.c Otherwise replacing the PRNG by calling
10910 RAND_set_rand_method would be impossible.
10913 *) Don't let DSA_generate_key() enter an infinite loop if the random
10914 number generation fails.
10917 *) New 'rand' application for creating pseudo-random output.
10920 *) Added configuration support for Linux/IA64
10921 [Rolf Haberrecker <rolf@suse.de>]
10923 *) Assembler module support for Mingw32.
10926 *) Shared library support for HPUX (in shlib/).
10927 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
10929 *) Shared library support for Solaris gcc.
10930 [Lutz Behnke <behnke@trustcenter.de>]
10932 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
10934 *) PKCS7_encrypt() was adding text MIME headers twice because they
10935 were added manually and by SMIME_crlf_copy().
10938 *) In bntest.c don't call BN_rand with zero bits argument.
10939 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
10941 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
10942 case was implemented. This caused BN_div_recp() to fail occasionally.
10945 *) Add an optional second argument to the set_label() in the perl
10946 assembly language builder. If this argument exists and is set
10947 to 1 it signals that the assembler should use a symbol whose
10948 scope is the entire file, not just the current function. This
10949 is needed with MASM which uses the format label:: for this scope.
10950 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
10952 *) Change the ASN1 types so they are typedefs by default. Before
10953 almost all types were #define'd to ASN1_STRING which was causing
10954 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
10958 *) Change names of new functions to the new get1/get0 naming
10959 convention: After 'get1', the caller owns a reference count
10960 and has to call ..._free; 'get0' returns a pointer to some
10961 data structure without incrementing reference counters.
10962 (Some of the existing 'get' functions increment a reference
10963 counter, some don't.)
10964 Similarly, 'set1' and 'add1' functions increase reference
10965 counters or duplicate objects.
10968 *) Allow for the possibility of temp RSA key generation failure:
10969 the code used to assume it always worked and crashed on failure.
10972 *) Fix potential buffer overrun problem in BIO_printf().
10973 [Ulf Möller, using public domain code by Patrick Powell; problem
10974 pointed out by David Sacerdote <das33@cornell.edu>]
10976 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
10977 RAND_egd() and RAND_status(). In the command line application,
10978 the EGD socket can be specified like a seed file using RANDFILE
10982 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
10983 Some CAs (e.g. Verisign) distribute certificates in this form.
10986 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
10987 list to exclude them. This means that no special compilation option
10988 is needed to use anonymous DH: it just needs to be included in the
10992 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
10993 EVP_MD_type. The old functionality is available in a new macro called
10994 EVP_MD_md(). Change code that uses it and update docs.
10997 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
10998 where the 'void *' argument is replaced by a function pointer argument.
10999 Previously 'void *' was abused to point to functions, which works on
11000 many platforms, but is not correct. As these functions are usually
11001 called by macros defined in OpenSSL header files, most source code
11002 should work without changes.
11005 *) <openssl/opensslconf.h> (which is created by Configure) now contains
11006 sections with information on -D... compiler switches used for
11007 compiling the library so that applications can see them. To enable
11008 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
11009 must be defined. E.g.,
11010 #define OPENSSL_ALGORITHM_DEFINES
11011 #include <openssl/opensslconf.h>
11012 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
11013 [Richard Levitte, Ulf and Bodo Möller]
11015 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
11019 *) Change the 'other' type in certificate aux info to a STACK_OF
11020 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
11021 the required ASN1 format: arbitrary types determined by an OID.
11024 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
11025 argument to 'req'. This is not because the function is newer or
11026 better than others it just uses the work 'NEW' in the certificate
11027 request header lines. Some software needs this.
11030 *) Reorganise password command line arguments: now passwords can be
11031 obtained from various sources. Delete the PEM_cb function and make
11032 it the default behaviour: i.e. if the callback is NULL and the
11033 usrdata argument is not NULL interpret it as a null terminated pass
11034 phrase. If usrdata and the callback are NULL then the pass phrase
11035 is prompted for as usual.
11038 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
11039 the support is automatically enabled. The resulting binaries will
11040 autodetect the card and use it if present.
11041 [Ben Laurie and Compaq Inc.]
11043 *) Work around for Netscape hang bug. This sends certificate request
11044 and server done in one record. Since this is perfectly legal in the
11045 SSL/TLS protocol it isn't a "bug" option and is on by default. See
11046 the bugs/SSLv3 entry for more info.
11049 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
11052 *) Add -rand argument to smime and pkcs12 applications and read/write
11056 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
11059 *) Add command line password options to the remaining applications.
11062 *) Bug fix for BN_div_recp() for numerators with an even number of
11066 *) More tests in bntest.c, and changed test_bn output.
11069 *) ./config recognizes MacOS X now.
11072 *) Bug fix for BN_div() when the first words of num and divisor are
11073 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
11076 *) Add support for various broken PKCS#8 formats, and command line
11077 options to produce them.
11080 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
11081 get temporary BIGNUMs from a BN_CTX.
11084 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
11088 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
11089 include a #define from the old name to the new. The original intent
11090 was that statically linked binaries could for example just call
11091 SSLeay_add_all_ciphers() to just add ciphers to the table and not
11092 link with digests. This never worked because SSLeay_add_all_digests()
11093 and SSLeay_add_all_ciphers() were in the same source file so calling
11094 one would link with the other. They are now in separate source files.
11097 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
11100 *) Use a less unusual form of the Miller-Rabin primality test (it used
11101 a binary algorithm for exponentiation integrated into the Miller-Rabin
11102 loop, our standard modexp algorithms are faster).
11105 *) Support for the EBCDIC character set completed.
11106 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
11108 *) Source code cleanups: use const where appropriate, eliminate casts,
11109 use void * instead of char * in lhash.
11112 *) Bugfix: ssl3_send_server_key_exchange was not restartable
11113 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
11114 this the server could overwrite ephemeral keys that the client
11118 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
11119 using 50 iterations of the Rabin-Miller test.
11121 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
11122 iterations of the Rabin-Miller test as required by the appendix
11123 to FIPS PUB 186[-1]) instead of DSA_is_prime.
11124 As BN_is_prime_fasttest includes trial division, DSA parameter
11125 generation becomes much faster.
11127 This implies a change for the callback functions in DSA_is_prime
11128 and DSA_generate_parameters: The callback function is called once
11129 for each positive witness in the Rabin-Miller test, not just
11130 occasionally in the inner loop; and the parameters to the
11131 callback function now provide an iteration count for the outer
11132 loop rather than for the current invocation of the inner loop.
11133 DSA_generate_parameters additionally can call the callback
11134 function with an 'iteration count' of -1, meaning that a
11135 candidate has passed the trial division test (when q is generated
11136 from an application-provided seed, trial division is skipped).
11139 *) New function BN_is_prime_fasttest that optionally does trial
11140 division before starting the Rabin-Miller test and has
11141 an additional BN_CTX * argument (whereas BN_is_prime always
11142 has to allocate at least one BN_CTX).
11143 'callback(1, -1, cb_arg)' is called when a number has passed the
11144 trial division stage.
11147 *) Fix for bug in CRL encoding. The validity dates weren't being handled
11151 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
11154 *) New function BN_pseudo_rand().
11157 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
11158 bignum version of BN_from_montgomery() with the working code from
11159 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
11163 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
11164 made it impossible to use the same SSL_SESSION data structure in
11165 SSL2 clients in multiple threads.
11168 *) The return value of RAND_load_file() no longer counts bytes obtained
11169 by stat(). RAND_load_file(..., -1) is new and uses the complete file
11170 to seed the PRNG (previously an explicit byte count was required).
11171 [Ulf Möller, Bodo Möller]
11173 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
11174 used (char *) instead of (void *) and had casts all over the place.
11177 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
11180 *) Retain source code compatibility for BN_prime_checks macro:
11181 BN_is_prime(..., BN_prime_checks, ...) now uses
11182 BN_prime_checks_for_size to determine the appropriate number of
11183 Rabin-Miller iterations.
11186 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
11187 DH_CHECK_P_NOT_SAFE_PRIME.
11188 (Check if this is true? OpenPGP calls them "strong".)
11191 *) Merge the functionality of "dh" and "gendh" programs into a new program
11192 "dhparam". The old programs are retained for now but will handle DH keys
11193 (instead of parameters) in future.
11196 *) Make the ciphers, s_server and s_client programs check the return values
11197 when a new cipher list is set.
11200 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
11201 ciphers. Before when the 56bit ciphers were enabled the sorting was
11204 The syntax for the cipher sorting has been extended to support sorting by
11205 cipher-strength (using the strength_bits hard coded in the tables).
11206 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
11208 Fix a bug in the cipher-command parser: when supplying a cipher command
11209 string with an "undefined" symbol (neither command nor alphanumeric
11210 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
11211 an error is flagged.
11213 Due to the strength-sorting extension, the code of the
11214 ssl_create_cipher_list() function was completely rearranged. I hope that
11215 the readability was also increased :-)
11216 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
11218 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
11219 for the first serial number and places 2 in the serial number file. This
11220 avoids problems when the root CA is created with serial number zero and
11221 the first user certificate has the same issuer name and serial number
11225 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
11226 the new code. Add documentation for this stuff.
11229 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
11230 X509_*() to X509at_*() on the grounds that they don't handle X509
11231 structures and behave in an analogous way to the X509v3 functions:
11232 they shouldn't be called directly but wrapper functions should be used
11235 So we also now have some wrapper functions that call the X509at functions
11236 when passed certificate requests. (TO DO: similar things can be done with
11237 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
11238 things. Some of these need some d2i or i2d and print functionality
11239 because they handle more complex structures.)
11242 *) Add missing #ifndefs that caused missing symbols when building libssl
11243 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
11244 NO_RSA in ssl/s2*.c.
11245 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
11247 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
11248 has a return value which indicates the quality of the random data
11249 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
11250 error queue. New function RAND_pseudo_bytes() generates output that is
11251 guaranteed to be unique but not unpredictable. RAND_add is like
11252 RAND_seed, but takes an extra argument for an entropy estimate
11253 (RAND_seed always assumes full entropy).
11256 *) Do more iterations of Rabin-Miller probable prime test (specifically,
11257 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
11258 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
11259 in crypto/bn/bn_prime.c for the complete table). This guarantees a
11260 false-positive rate of at most 2^-80 for random input.
11263 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
11266 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
11267 in the 0.9.5 release), this returns the chain
11268 from an X509_CTX structure with a dup of the stack and all
11269 the X509 reference counts upped: so the stack will exist
11270 after X509_CTX_cleanup() has been called. Modify pkcs12.c
11273 Also make SSL_SESSION_print() print out the verify return
11277 *) Add manpage for the pkcs12 command. Also change the default
11278 behaviour so MAC iteration counts are used unless the new
11279 -nomaciter option is used. This improves file security and
11280 only older versions of MSIE (4.0 for example) need it.
11283 *) Honor the no-xxx Configure options when creating .DEF files.
11286 *) Add PKCS#10 attributes to field table: challengePassword,
11287 unstructuredName and unstructuredAddress. These are taken from
11288 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
11289 international characters are used.
11291 More changes to X509_ATTRIBUTE code: allow the setting of types
11292 based on strings. Remove the 'loc' parameter when adding
11293 attributes because these will be a SET OF encoding which is sorted
11297 *) Initial changes to the 'req' utility to allow request generation
11298 automation. This will allow an application to just generate a template
11299 file containing all the field values and have req construct the
11302 Initial support for X509_ATTRIBUTE handling. Stacks of these are
11303 used all over the place including certificate requests and PKCS#7
11304 structures. They are currently handled manually where necessary with
11305 some primitive wrappers for PKCS#7. The new functions behave in a
11306 manner analogous to the X509 extension functions: they allow
11307 attributes to be looked up by NID and added.
11309 Later something similar to the X509V3 code would be desirable to
11310 automatically handle the encoding, decoding and printing of the
11311 more complex types. The string types like challengePassword can
11312 be handled by the string table functions.
11314 Also modified the multi byte string table handling. Now there is
11315 a 'global mask' which masks out certain types. The table itself
11316 can use the flag STABLE_NO_MASK to ignore the mask setting: this
11317 is useful when for example there is only one permissible type
11318 (as in countryName) and using the mask might result in no valid
11322 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
11323 SSL_get_peer_finished to allow applications to obtain the latest
11324 Finished messages sent to the peer or expected from the peer,
11325 respectively. (SSL_get_peer_finished is usually the Finished message
11326 actually received from the peer, otherwise the protocol will be aborted.)
11328 As the Finished message are message digests of the complete handshake
11329 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
11330 be used for external authentication procedures when the authentication
11331 provided by SSL/TLS is not desired or is not enough.
11334 *) Enhanced support for Alpha Linux is added. Now ./config checks if
11335 the host supports BWX extension and if Compaq C is present on the
11336 $PATH. Just exploiting of the BWX extension results in 20-30%
11337 performance kick for some algorithms, e.g. DES and RC4 to mention
11338 a couple. Compaq C in turn generates ~20% faster code for MD5 and
11342 *) Add support for MS "fast SGC". This is arguably a violation of the
11343 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
11344 weak crypto and after checking the certificate is SGC a second one
11345 with strong crypto. MS SGC stops the first handshake after receiving
11346 the server certificate message and sends a second client hello. Since
11347 a server will typically do all the time consuming operations before
11348 expecting any further messages from the client (server key exchange
11349 is the most expensive) there is little difference between the two.
11351 To get OpenSSL to support MS SGC we have to permit a second client
11352 hello message after we have sent server done. In addition we have to
11353 reset the MAC if we do get this second client hello.
11356 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
11357 if a DER encoded private key is RSA or DSA traditional format. Changed
11358 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
11359 format DER encoded private key. Newer code should use PKCS#8 format which
11360 has the key type encoded in the ASN1 structure. Added DER private key
11361 support to pkcs8 application.
11364 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
11365 ciphersuites has been selected (as required by the SSL 3/TLS 1
11366 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
11367 is set, we interpret this as a request to violate the specification
11368 (the worst that can happen is a handshake failure, and 'correct'
11369 behaviour would result in a handshake failure anyway).
11372 *) In SSL_CTX_add_session, take into account that there might be multiple
11373 SSL_SESSION structures with the same session ID (e.g. when two threads
11374 concurrently obtain them from an external cache).
11375 The internal cache can handle only one SSL_SESSION with a given ID,
11376 so if there's a conflict, we now throw out the old one to achieve
11380 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
11381 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
11382 some routines that use cipher OIDs: some ciphers do not have OIDs
11383 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
11387 *) Simplify the trust setting structure and code. Now we just have
11388 two sequences of OIDs for trusted and rejected settings. These will
11389 typically have values the same as the extended key usage extension
11390 and any application specific purposes.
11392 The trust checking code now has a default behaviour: it will just
11393 check for an object with the same NID as the passed id. Functions can
11394 be provided to override either the default behaviour or the behaviour
11395 for a given id. SSL client, server and email already have functions
11396 in place for compatibility: they check the NID and also return "trusted"
11397 if the certificate is self signed.
11400 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
11401 traditional format into an EVP_PKEY structure.
11404 *) Add a password callback function PEM_cb() which either prompts for
11405 a password if usr_data is NULL or otherwise assumes it is a null
11406 terminated password. Allow passwords to be passed on command line
11407 environment or config files in a few more utilities.
11410 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
11411 keys. Add some short names for PKCS#8 PBE algorithms and allow them
11412 to be specified on the command line for the pkcs8 and pkcs12 utilities.
11413 Update documentation.
11416 *) Support for ASN1 "NULL" type. This could be handled before by using
11417 ASN1_TYPE but there wasn't any function that would try to read a NULL
11418 and produce an error if it couldn't. For compatibility we also have
11419 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
11420 don't allocate anything because they don't need to.
11423 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
11425 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
11427 *) Rebuild of the memory allocation routines used by OpenSSL code and
11428 possibly others as well. The purpose is to make an interface that
11429 provide hooks so anyone can build a separate set of allocation and
11430 deallocation routines to be used by OpenSSL, for example memory
11431 pool implementations, or something else, which was previously hard
11432 since Malloc(), Realloc() and Free() were defined as macros having
11433 the values malloc, realloc and free, respectively (except for Win32
11434 compilations). The same is provided for memory debugging code.
11435 OpenSSL already comes with functionality to find memory leaks, but
11436 this gives people a chance to debug other memory problems.
11438 With these changes, a new set of functions and macros have appeared:
11440 CRYPTO_set_mem_debug_functions() [F]
11441 CRYPTO_get_mem_debug_functions() [F]
11442 CRYPTO_dbg_set_options() [F]
11443 CRYPTO_dbg_get_options() [F]
11444 CRYPTO_malloc_debug_init() [M]
11446 The memory debug functions are NULL by default, unless the library
11447 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
11448 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
11449 gives the standard debugging functions that come with OpenSSL) or
11450 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
11451 provided by the library user) must be used. When the standard
11452 debugging functions are used, CRYPTO_dbg_set_options can be used to
11453 request additional information:
11454 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
11455 the CRYPTO_MDEBUG_xxx macro when compiling the library.
11457 Also, things like CRYPTO_set_mem_functions will always give the
11458 expected result (the new set of functions is used for allocation
11459 and deallocation) at all times, regardless of platform and compiler
11462 To finish it up, some functions that were never use in any other
11463 way than through macros have a new API and new semantic:
11465 CRYPTO_dbg_malloc()
11466 CRYPTO_dbg_realloc()
11469 All macros of value have retained their old syntax.
11470 [Richard Levitte and Bodo Moeller]
11472 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
11473 ordering of SMIMECapabilities wasn't in "strength order" and there
11474 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
11478 *) Some ASN1 types with illegal zero length encoding (INTEGER,
11479 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
11480 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
11482 *) Merge in my S/MIME library for OpenSSL. This provides a simple
11483 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
11484 functionality to handle multipart/signed properly) and a utility
11485 called 'smime' to call all this stuff. This is based on code I
11486 originally wrote for Celo who have kindly allowed it to be
11487 included in OpenSSL.
11490 *) Add variants des_set_key_checked and des_set_key_unchecked of
11491 des_set_key (aka des_key_sched). Global variable des_check_key
11492 decides which of these is called by des_set_key; this way
11493 des_check_key behaves as it always did, but applications and
11494 the library itself, which was buggy for des_check_key == 1,
11495 have a cleaner way to pick the version they need.
11498 *) New function PKCS12_newpass() which changes the password of a
11502 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
11503 dynamic mix. In both cases the ids can be used as an index into the
11504 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
11505 functions so they accept a list of the field values and the
11506 application doesn't need to directly manipulate the X509_TRUST
11510 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
11514 *) Modify the way the V3 extension code looks up extensions. This now
11515 works in a similar way to the object code: we have some "standard"
11516 extensions in a static table which is searched with OBJ_bsearch()
11517 and the application can add dynamic ones if needed. The file
11518 crypto/x509v3/ext_dat.h now has the info: this file needs to be
11519 updated whenever a new extension is added to the core code and kept
11520 in ext_nid order. There is a simple program 'tabtest.c' which checks
11521 this. New extensions are not added too often so this file can readily
11522 be maintained manually.
11524 There are two big advantages in doing things this way. The extensions
11525 can be looked up immediately and no longer need to be "added" using
11526 X509V3_add_standard_extensions(): this function now does nothing.
11527 [Side note: I get *lots* of email saying the extension code doesn't
11528 work because people forget to call this function]
11529 Also no dynamic allocation is done unless new extensions are added:
11530 so if we don't add custom extensions there is no need to call
11531 X509V3_EXT_cleanup().
11534 *) Modify enc utility's salting as follows: make salting the default. Add a
11535 magic header, so unsalted files fail gracefully instead of just decrypting
11536 to garbage. This is because not salting is a big security hole, so people
11537 should be discouraged from doing it.
11540 *) Fixes and enhancements to the 'x509' utility. It allowed a message
11541 digest to be passed on the command line but it only used this
11542 parameter when signing a certificate. Modified so all relevant
11543 operations are affected by the digest parameter including the
11544 -fingerprint and -x509toreq options. Also -x509toreq choked if a
11545 DSA key was used because it didn't fix the digest.
11548 *) Initial certificate chain verify code. Currently tests the untrusted
11549 certificates for consistency with the verify purpose (which is set
11550 when the X509_STORE_CTX structure is set up) and checks the pathlength.
11552 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
11553 this is because it will reject chains with invalid extensions whereas
11554 every previous version of OpenSSL and SSLeay made no checks at all.
11556 Trust code: checks the root CA for the relevant trust settings. Trust
11557 settings have an initial value consistent with the verify purpose: e.g.
11558 if the verify purpose is for SSL client use it expects the CA to be
11559 trusted for SSL client use. However the default value can be changed to
11560 permit custom trust settings: one example of this would be to only trust
11561 certificates from a specific "secure" set of CAs.
11563 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
11564 which should be used for version portability: especially since the
11565 verify structure is likely to change more often now.
11567 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
11568 to set them. If not set then assume SSL clients will verify SSL servers
11571 Two new options to the verify program: -untrusted allows a set of
11572 untrusted certificates to be passed in and -purpose which sets the
11573 intended purpose of the certificate. If a purpose is set then the
11574 new chain verify code is used to check extension consistency.
11577 *) Support for the authority information access extension.
11580 *) Modify RSA and DSA PEM read routines to transparently handle
11581 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
11582 public keys in a format compatible with certificate
11583 SubjectPublicKeyInfo structures. Unfortunately there were already
11584 functions called *_PublicKey_* which used various odd formats so
11585 these are retained for compatibility: however the DSA variants were
11586 never in a public release so they have been deleted. Changed dsa/rsa
11587 utilities to handle the new format: note no releases ever handled public
11588 keys so we should be OK.
11590 The primary motivation for this change is to avoid the same fiasco
11591 that dogs private keys: there are several incompatible private key
11592 formats some of which are standard and some OpenSSL specific and
11593 require various evil hacks to allow partial transparent handling and
11594 even then it doesn't work with DER formats. Given the option anything
11595 other than PKCS#8 should be dumped: but the other formats have to
11596 stay in the name of compatibility.
11598 With public keys and the benefit of hindsight one standard format
11599 is used which works with EVP_PKEY, RSA or DSA structures: though
11600 it clearly returns an error if you try to read the wrong kind of key.
11602 Added a -pubkey option to the 'x509' utility to output the public key.
11603 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
11604 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
11605 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
11606 that do the same as the EVP_PKEY_assign_*() except they up the
11607 reference count of the added key (they don't "swallow" the
11611 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
11612 CRLs would fail if the file contained no certificates or no CRLs:
11613 added a new function to read in both types and return the number
11614 read: this means that if none are read it will be an error. The
11615 DER versions of the certificate and CRL reader would always fail
11616 because it isn't possible to mix certificates and CRLs in DER format
11617 without choking one or the other routine. Changed this to just read
11618 a certificate: this is the best we can do. Also modified the code
11619 in apps/verify.c to take notice of return codes: it was previously
11620 attempting to read in certificates from NULL pointers and ignoring
11621 any errors: this is one reason why the cert and CRL reader seemed
11622 to work. It doesn't check return codes from the default certificate
11623 routines: these may well fail if the certificates aren't installed.
11626 *) Code to support otherName option in GeneralName.
11629 *) First update to verify code. Change the verify utility
11630 so it warns if it is passed a self signed certificate:
11631 for consistency with the normal behaviour. X509_verify
11632 has been modified to it will now verify a self signed
11633 certificate if *exactly* the same certificate appears
11634 in the store: it was previously impossible to trust a
11635 single self signed certificate. This means that:
11636 openssl verify ss.pem
11637 now gives a warning about a self signed certificate but
11638 openssl verify -CAfile ss.pem ss.pem
11642 *) For servers, store verify_result in SSL_SESSION data structure
11643 (and add it to external session representation).
11644 This is needed when client certificate verifications fails,
11645 but an application-provided verification callback (set by
11646 SSL_CTX_set_cert_verify_callback) allows accepting the session
11647 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
11648 but returns 1): When the session is reused, we have to set
11649 ssl->verify_result to the appropriate error code to avoid
11651 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
11653 *) Fix a bug in the new PKCS#7 code: it didn't consider the
11654 case in PKCS7_dataInit() where the signed PKCS7 structure
11655 didn't contain any existing data because it was being created.
11656 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
11658 *) Add a salt to the key derivation routines in enc.c. This
11659 forms the first 8 bytes of the encrypted file. Also add a
11660 -S option to allow a salt to be input on the command line.
11663 *) New function X509_cmp(). Oddly enough there wasn't a function
11664 to compare two certificates. We do this by working out the SHA1
11665 hash and comparing that. X509_cmp() will be needed by the trust
11669 *) SSL_get1_session() is like SSL_get_session(), but increments
11670 the reference count in the SSL_SESSION returned.
11671 [Geoff Thorpe <geoff@eu.c2.net>]
11673 *) Fix for 'req': it was adding a null to request attributes.
11674 Also change the X509_LOOKUP and X509_INFO code to handle
11675 certificate auxiliary information.
11678 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
11682 *) Add the possibility to add extra information to the memory leak
11683 detecting output, to form tracebacks, showing from where each
11684 allocation was originated: CRYPTO_push_info("constant string") adds
11685 the string plus current file name and line number to a per-thread
11686 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
11687 is like calling CYRPTO_pop_info() until the stack is empty.
11688 Also updated memory leak detection code to be multi-thread-safe.
11691 *) Add options -text and -noout to pkcs7 utility and delete the
11692 encryption options which never did anything. Update docs.
11695 *) Add options to some of the utilities to allow the pass phrase
11696 to be included on either the command line (not recommended on
11697 OSes like Unix) or read from the environment. Update the
11698 manpages and fix a few bugs.
11701 *) Add a few manpages for some of the openssl commands.
11704 *) Fix the -revoke option in ca. It was freeing up memory twice,
11705 leaking and not finding already revoked certificates.
11708 *) Extensive changes to support certificate auxiliary information.
11709 This involves the use of X509_CERT_AUX structure and X509_AUX
11710 functions. An X509_AUX function such as PEM_read_X509_AUX()
11711 can still read in a certificate file in the usual way but it
11712 will also read in any additional "auxiliary information". By
11713 doing things this way a fair degree of compatibility can be
11714 retained: existing certificates can have this information added
11715 using the new 'x509' options.
11717 Current auxiliary information includes an "alias" and some trust
11718 settings. The trust settings will ultimately be used in enhanced
11719 certificate chain verification routines: currently a certificate
11720 can only be trusted if it is self signed and then it is trusted
11724 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
11725 The problem was that one of the replacement routines had not been working
11726 since SSLeay releases. For now the offending routine has been replaced
11727 with non-optimised assembler. Even so, this now gives around 95%
11728 performance improvement for 1024 bit RSA signs.
11731 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
11732 handling. Most clients have the effective key size in bits equal to
11733 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
11734 A few however don't do this and instead use the size of the decrypted key
11735 to determine the RC2 key length and the AlgorithmIdentifier to determine
11736 the effective key length. In this case the effective key length can still
11737 be 40 bits but the key length can be 168 bits for example. This is fixed
11738 by manually forcing an RC2 key into the EVP_PKEY structure because the
11739 EVP code can't currently handle unusual RC2 key sizes: it always assumes
11740 the key length and effective key length are equal.
11743 *) Add a bunch of functions that should simplify the creation of
11744 X509_NAME structures. Now you should be able to do:
11745 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
11746 and have it automatically work out the correct field type and fill in
11747 the structures. The more adventurous can try:
11748 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
11749 and it will (hopefully) work out the correct multibyte encoding.
11752 *) Change the 'req' utility to use the new field handling and multibyte
11753 copy routines. Before the DN field creation was handled in an ad hoc
11754 way in req, ca, and x509 which was rather broken and didn't support
11755 BMPStrings or UTF8Strings. Since some software doesn't implement
11756 BMPStrings or UTF8Strings yet, they can be enabled using the config file
11757 using the dirstring_type option. See the new comment in the default
11758 openssl.cnf for more info.
11761 *) Make crypto/rand/md_rand.c more robust:
11762 - Assure unique random numbers after fork().
11763 - Make sure that concurrent threads access the global counter and
11764 md serializably so that we never lose entropy in them
11765 or use exactly the same state in multiple threads.
11766 Access to the large state is not always serializable because
11767 the additional locking could be a performance killer, and
11768 md should be large enough anyway.
11771 *) New file apps/app_rand.c with commonly needed functionality
11772 for handling the random seed file.
11774 Use the random seed file in some applications that previously did not:
11776 dsaparam -genkey (which also ignored its '-rand' option),
11779 x509 (when signing).
11780 Except on systems with /dev/urandom, it is crucial to have a random
11781 seed file at least for key creation, DSA signing, and for DH exchanges;
11782 for RSA signatures we could do without one.
11784 gendh and gendsa (unlike genrsa) used to read only the first byte
11785 of each file listed in the '-rand' option. The function as previously
11786 found in genrsa is now in app_rand.c and is used by all programs
11787 that support '-rand'.
11790 *) In RAND_write_file, use mode 0600 for creating files;
11791 don't just chmod when it may be too late.
11794 *) Report an error from X509_STORE_load_locations
11795 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
11798 *) New function ASN1_mbstring_copy() this copies a string in either
11799 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
11800 into an ASN1_STRING type. A mask of permissible types is passed
11801 and it chooses the "minimal" type to use or an error if not type
11805 *) Add function equivalents to the various macros in asn1.h. The old
11806 macros are retained with an M_ prefix. Code inside the library can
11807 use the M_ macros. External code (including the openssl utility)
11808 should *NOT* in order to be "shared library friendly".
11811 *) Add various functions that can check a certificate's extensions
11812 to see if it usable for various purposes such as SSL client,
11813 server or S/MIME and CAs of these types. This is currently
11814 VERY EXPERIMENTAL but will ultimately be used for certificate chain
11815 verification. Also added a -purpose flag to x509 utility to
11816 print out all the purposes.
11819 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
11823 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
11824 for, obtain and decode and extension and obtain its critical flag.
11825 This allows all the necessary extension code to be handled in a
11826 single function call.
11829 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
11830 platforms. See crypto/rc4/rc4_enc.c for further details.
11833 *) New -noout option to asn1parse. This causes no output to be produced
11834 its main use is when combined with -strparse and -out to extract data
11835 from a file (which may not be in ASN.1 format).
11838 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
11839 when producing the local key id.
11840 [Richard Levitte <levitte@stacken.kth.se>]
11842 *) New option -dhparam in s_server. This allows a DH parameter file to be
11843 stated explicitly. If it is not stated then it tries the first server
11844 certificate file. The previous behaviour hard coded the filename
11848 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
11849 a public key to be input or output. For example:
11850 openssl rsa -in key.pem -pubout -out pubkey.pem
11851 Also added necessary DSA public key functions to handle this.
11854 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
11855 in the message. This was handled by allowing
11856 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
11857 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
11859 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
11860 to the end of the strings whereas this didn't. This would cause problems
11861 if strings read with d2i_ASN1_bytes() were later modified.
11862 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
11864 *) Fix for base64 decode bug. When a base64 bio reads only one line of
11865 data and it contains EOF it will end up returning an error. This is
11866 caused by input 46 bytes long. The cause is due to the way base64
11867 BIOs find the start of base64 encoded data. They do this by trying a
11868 trial decode on each line until they find one that works. When they
11869 do a flag is set and it starts again knowing it can pass all the
11870 data directly through the decoder. Unfortunately it doesn't reset
11871 the context it uses. This means that if EOF is reached an attempt
11872 is made to pass two EOFs through the context and this causes the
11873 resulting error. This can also cause other problems as well. As is
11874 usual with these problems it takes *ages* to find and the fix is
11875 trivial: move one line.
11876 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
11878 *) Ugly workaround to get s_client and s_server working under Windows. The
11879 old code wouldn't work because it needed to select() on sockets and the
11880 tty (for keypresses and to see if data could be written). Win32 only
11881 supports select() on sockets so we select() with a 1s timeout on the
11882 sockets and then see if any characters are waiting to be read, if none
11883 are present then we retry, we also assume we can always write data to
11884 the tty. This isn't nice because the code then blocks until we've
11885 received a complete line of data and it is effectively polling the
11886 keyboard at 1s intervals: however it's quite a bit better than not
11887 working at all :-) A dedicated Windows application might handle this
11888 with an event loop for example.
11891 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
11892 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
11893 will be called when RSA_sign() and RSA_verify() are used. This is useful
11894 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
11895 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
11896 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
11897 This necessitated the support of an extra signature type NID_md5_sha1
11898 for SSL signatures and modifications to the SSL library to use it instead
11899 of calling RSA_public_decrypt() and RSA_private_encrypt().
11902 *) Add new -verify -CAfile and -CApath options to the crl program, these
11903 will lookup a CRL issuers certificate and verify the signature in a
11904 similar way to the verify program. Tidy up the crl program so it
11905 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
11906 less strict. It will now permit CRL extensions even if it is not
11907 a V2 CRL: this will allow it to tolerate some broken CRLs.
11910 *) Initialize all non-automatic variables each time one of the openssl
11911 sub-programs is started (this is necessary as they may be started
11912 multiple times from the "OpenSSL>" prompt).
11913 [Lennart Bang, Bodo Moeller]
11915 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
11916 removing all other RSA functionality (this is what NO_RSA does). This
11917 is so (for example) those in the US can disable those operations covered
11918 by the RSA patent while allowing storage and parsing of RSA keys and RSA
11922 *) Non-copying interface to BIO pairs.
11923 (still largely untested)
11926 *) New function ASN1_tag2str() to convert an ASN1 tag to a descriptive
11927 ASCII string. This was handled independently in various places before.
11930 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
11931 UTF8 strings a character at a time.
11934 *) Use client_version from client hello to select the protocol
11935 (s23_srvr.c) and for RSA client key exchange verification
11936 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
11939 *) Add various utility functions to handle SPKACs, these were previously
11940 handled by poking round in the structure internals. Added new function
11941 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
11942 print, verify and generate SPKACs. Based on an original idea from
11943 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
11946 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
11949 *) Allow the config file extension section to be overwritten on the
11950 command line. Based on an original idea from Massimiliano Pala
11951 <madwolf@comune.modena.it>. The new option is called -extensions
11952 and can be applied to ca, req and x509. Also -reqexts to override
11953 the request extensions in req and -crlexts to override the crl extensions
11957 *) Add new feature to the SPKAC handling in ca. Now you can include
11958 the same field multiple times by preceding it by "XXXX." for example:
11961 this is the same syntax as used in the req config file.
11964 *) Allow certificate extensions to be added to certificate requests. These
11965 are specified in a 'req_extensions' option of the req section of the
11966 config file. They can be printed out with the -text option to req but
11967 are otherwise ignored at present.
11970 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
11971 data read consists of only the final block it would not decrypted because
11972 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
11973 A misplaced 'break' also meant the decrypted final block might not be
11974 copied until the next read.
11977 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
11978 a few extra parameters to the DH structure: these will be useful if
11979 for example we want the value of 'q' or implement X9.42 DH.
11982 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
11983 provides hooks that allow the default DSA functions or functions on a
11984 "per key" basis to be replaced. This allows hardware acceleration and
11985 hardware key storage to be handled without major modification to the
11986 library. Also added low level modexp hooks and CRYPTO_EX structure and
11987 associated functions.
11990 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
11991 as "read only": it can't be written to and the buffer it points to will
11992 not be freed. Reading from a read only BIO is much more efficient than
11993 a normal memory BIO. This was added because there are several times when
11994 an area of memory needs to be read from a BIO. The previous method was
11995 to create a memory BIO and write the data to it, this results in two
11996 copies of the data and an O(n^2) reading algorithm. There is a new
11997 function BIO_new_mem_buf() which creates a read only memory BIO from
11998 an area of memory. Also modified the PKCS#7 routines to use read only
12002 *) Bugfix: ssl23_get_client_hello did not work properly when called in
12003 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
12004 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
12005 but a retry condition occurred while trying to read the rest.
12008 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
12009 NID_pkcs7_encrypted by default: this was wrong since this should almost
12010 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
12011 the encrypted data type: this is a more sensible place to put it and it
12012 allows the PKCS#12 code to be tidied up that duplicated this
12016 *) Changed obj_dat.pl script so it takes its input and output files on
12017 the command line. This should avoid shell escape redirection problems
12021 *) Initial support for certificate extension requests, these are included
12022 in things like Xenroll certificate requests. Included functions to allow
12023 extensions to be obtained and added.
12026 *) -crlf option to s_client and s_server for sending newlines as
12027 CRLF (as required by many protocols).
12030 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
12032 *) Install libRSAglue.a when OpenSSL is built with RSAref.
12033 [Ralf S. Engelschall]
12035 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
12036 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
12038 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
12042 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
12043 DH parameters/keys (q is lost during that conversion, but the resulting
12044 DH parameters contain its length).
12046 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
12047 much faster than DH_generate_parameters (which creates parameters
12048 where p = 2*q + 1), and also the smaller q makes DH computations
12049 much more efficient (160-bit exponentiation instead of 1024-bit
12050 exponentiation); so this provides a convenient way to support DHE
12051 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
12052 utter importance to use
12053 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
12055 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
12056 when such DH parameters are used, because otherwise small subgroup
12057 attacks may become possible!
12060 *) Avoid memory leak in i2d_DHparams.
12063 *) Allow the -k option to be used more than once in the enc program:
12064 this allows the same encrypted message to be read by multiple recipients.
12067 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
12068 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
12069 it will always use the numerical form of the OID, even if it has a short
12073 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
12074 method only got called if p,q,dmp1,dmq1,iqmp components were present,
12075 otherwise bn_mod_exp was called. In the case of hardware keys for example
12076 no private key components need be present and it might store extra data
12077 in the RSA structure, which cannot be accessed from bn_mod_exp.
12078 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
12079 private key operations.
12082 *) Added support for SPARC Linux.
12085 *) pem_password_cb function type incompatibly changed from
12086 typedef int pem_password_cb(char *buf, int size, int rwflag);
12088 ....(char *buf, int size, int rwflag, void *userdata);
12089 so that applications can pass data to their callbacks:
12090 The PEM[_ASN1]_{read,write}... functions and macros now take an
12091 additional void * argument, which is just handed through whenever
12092 the password callback is called.
12093 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
12095 New function SSL_CTX_set_default_passwd_cb_userdata.
12097 Compatibility note: As many C implementations push function arguments
12098 onto the stack in reverse order, the new library version is likely to
12099 interoperate with programs that have been compiled with the old
12100 pem_password_cb definition (PEM_whatever takes some data that
12101 happens to be on the stack as its last argument, and the callback
12102 just ignores this garbage); but there is no guarantee whatsoever that
12105 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
12106 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
12107 problems not only on Windows, but also on some Unix platforms.
12108 To avoid problematic command lines, these definitions are now in an
12109 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
12110 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
12113 *) MIPS III/IV assembler module is reimplemented.
12116 *) More DES library cleanups: remove references to srand/rand and
12117 delete an unused file.
12120 *) Add support for the free Netwide assembler (NASM) under Win32,
12121 since not many people have MASM (ml) and it can be hard to obtain.
12122 This is currently experimental but it seems to work OK and pass all
12123 the tests. Check out INSTALL.W32 for info.
12126 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
12127 without temporary keys kept an extra copy of the server key,
12128 and connections with temporary keys did not free everything in case
12132 *) New function RSA_check_key and new openssl rsa option -check
12133 for verifying the consistency of RSA keys.
12134 [Ulf Moeller, Bodo Moeller]
12136 *) Various changes to make Win32 compile work:
12137 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
12138 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
12139 comparison" warnings.
12140 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
12143 *) Add a debugging option to PKCS#5 v2 key generation function: when
12144 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
12145 derived keys are printed to stderr.
12148 *) Copy the flags in ASN1_STRING_dup().
12149 [Roman E. Pavlov <pre@mo.msk.ru>]
12151 *) The x509 application mishandled signing requests containing DSA
12152 keys when the signing key was also DSA and the parameters didn't match.
12154 It was supposed to omit the parameters when they matched the signing key:
12155 the verifying software was then supposed to automatically use the CA's
12156 parameters if they were absent from the end user certificate.
12158 Omitting parameters is no longer recommended. The test was also
12159 the wrong way round! This was probably due to unusual behaviour in
12160 EVP_cmp_parameters() which returns 1 if the parameters match.
12161 This meant that parameters were omitted when they *didn't* match and
12162 the certificate was useless. Certificates signed with 'ca' didn't have
12164 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
12166 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
12167 The interface is as follows:
12168 Applications can use
12169 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
12170 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
12171 "off" is now the default.
12172 The library internally uses
12173 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
12174 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
12175 to disable memory-checking temporarily.
12177 Some inconsistent states that previously were possible (and were
12178 even the default) are now avoided.
12180 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
12181 with each memory chunk allocated; this is occasionally more helpful
12182 than just having a counter.
12184 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
12186 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
12190 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
12191 which largely parallels "options", but is for changing API behaviour,
12192 whereas "options" are about protocol behaviour.
12193 Initial "mode" flags are:
12195 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
12196 a single record has been written.
12197 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
12198 retries use the same buffer location.
12199 (But all of the contents must be
12203 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
12206 *) Fix problems with no-hmac etc.
12207 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
12209 *) New functions RSA_get_default_method(), RSA_set_method() and
12210 RSA_get_method(). These allows replacement of RSA_METHODs without having
12211 to mess around with the internals of an RSA structure.
12214 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
12215 Also really enable memory leak checks in openssl.c and in some
12217 [Chad C. Mulligan, Bodo Moeller]
12219 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
12220 up the length of negative integers. This has now been simplified to just
12221 store the length when it is first determined and use it later, rather
12222 than trying to keep track of where data is copied and updating it to
12224 [Steve Henson, reported by Brien Wheeler
12225 <bwheeler@authentica-security.com>]
12227 *) Add a new function PKCS7_signatureVerify. This allows the verification
12228 of a PKCS#7 signature but with the signing certificate passed to the
12229 function itself. This contrasts with PKCS7_dataVerify which assumes the
12230 certificate is present in the PKCS#7 structure. This isn't always the
12231 case: certificates can be omitted from a PKCS#7 structure and be
12232 distributed by "out of band" means (such as a certificate database).
12235 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
12236 function prototypes in pem.h, also change util/mkdef.pl to add the
12237 necessary function names.
12240 *) mk1mf.pl (used by Windows builds) did not properly read the
12241 options set by Configure in the top level Makefile, and Configure
12242 was not even able to write more than one option correctly.
12243 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
12246 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
12247 file to be loaded from a BIO or FILE pointer. The BIO version will
12248 for example allow memory BIOs to contain config info.
12251 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
12252 Whoever hopes to achieve shared-library compatibility across versions
12253 must use this, not the compile-time macro.
12254 (Exercise 0.9.4: Which is the minimum library version required by
12256 Note: All this applies only to multi-threaded programs, others don't
12260 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
12261 through a BIO pair triggered the default case, i.e.
12262 SSLerr(...,SSL_R_UNKNOWN_STATE).
12265 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
12266 can use the SSL library even if none of the specific BIOs is
12270 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
12271 for the encoded length.
12272 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
12274 *) Add initial documentation of the X509V3 functions.
12277 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
12278 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
12279 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
12280 secure PKCS#8 private key format with a high iteration count.
12283 *) Fix determination of Perl interpreter: A perl or perl5
12284 _directory_ in $PATH was also accepted as the interpreter.
12285 [Ralf S. Engelschall]
12287 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
12288 wrong with it but it was very old and did things like calling
12289 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
12290 unusual formatting.
12293 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
12294 to use the new extension code.
12297 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
12298 with macros. This should make it easier to change their form, add extra
12299 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
12303 *) Add to configuration table a new entry that can specify an alternative
12304 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
12305 according to Mark Crispin <MRC@Panda.COM>.
12309 *) DES CBC did not update the IV. Weird.
12312 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
12313 Changing the behaviour of the former might break existing programs --
12314 where IV updating is needed, des_ncbc_encrypt can be used.
12317 *) When bntest is run from "make test" it drives bc to check its
12318 calculations, as well as internally checking them. If an internal check
12319 fails, it needs to cause bc to give a non-zero result or make test carries
12320 on without noticing the failure. Fixed.
12323 *) DES library cleanups.
12326 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
12327 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
12328 ciphers. NOTE: although the key derivation function has been verified
12329 against some published test vectors it has not been extensively tested
12330 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
12334 *) Instead of "mkdir -p", which is not fully portable, use new
12335 Perl script "util/mkdir-p.pl".
12338 *) Rewrite the way password based encryption (PBE) is handled. It used to
12339 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
12340 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
12341 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
12342 the 'parameter' field of the AlgorithmIdentifier is passed to the
12343 underlying key generation function so it must do its own ASN1 parsing.
12344 This has also changed the EVP_PBE_CipherInit() function which now has a
12345 'parameter' argument instead of literal salt and iteration count values
12346 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
12349 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
12350 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
12351 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
12352 KEY" because this clashed with PKCS#8 unencrypted string. Since this
12353 value was just used as a "magic string" and not used directly its
12354 value doesn't matter.
12357 *) Introduce some semblance of const correctness to BN. Shame C doesn't
12361 *) "linux-sparc64" configuration (ultrapenguin).
12362 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
12363 "linux-sparc" configuration.
12364 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
12366 *) config now generates no-xxx options for missing ciphers.
12369 *) Support the EBCDIC character set (work in progress).
12370 File ebcdic.c not yet included because it has a different license.
12371 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
12373 *) Support BS2000/OSD-POSIX.
12374 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
12376 *) Make callbacks for key generation use void * instead of char *.
12379 *) Make S/MIME samples compile (not yet tested).
12382 *) Additional typesafe stacks.
12385 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
12389 Changes between 0.9.3 and 0.9.3a [29 May 1999]
12391 *) New configuration variant "sco5-gcc".
12393 *) Updated some demos.
12394 [Sean O Riordain, Wade Scholine]
12396 *) Add missing BIO_free at exit of pkcs12 application.
12399 *) Fix memory leak in conf.c.
12402 *) Updates for Win32 to assembler version of MD5.
12405 *) Set #! path to perl in apps/der_chop to where we found it
12406 instead of using a fixed path.
12409 *) SHA library changes for irix64-mips4-cc.
12412 *) Improvements for VMS support.
12416 Changes between 0.9.2b and 0.9.3 [24 May 1999]
12418 *) Bignum library bug fix. IRIX 6 passes "make test" now!
12419 This also avoids the problems with SC4.2 and unpatched SC5.
12420 [Andy Polyakov <appro@fy.chalmers.se>]
12422 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
12423 These are required because of the typesafe stack would otherwise break
12424 existing code. If old code used a structure member which used to be STACK
12425 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
12426 sk_num or sk_value it would produce an error because the num, data members
12427 are not present in STACK_OF. Now it just produces a warning. sk_set
12428 replaces the old method of assigning a value to sk_value
12429 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
12430 that does this will no longer work (and should use sk_set instead) but
12431 this could be regarded as a "questionable" behaviour anyway.
12434 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
12435 correctly handle encrypted S/MIME data.
12438 *) Change type of various DES function arguments from des_cblock
12439 (which means, in function argument declarations, pointer to char)
12440 to des_cblock * (meaning pointer to array with 8 char elements),
12441 which allows the compiler to do more typechecking; it was like
12442 that back in SSLeay, but with lots of ugly casts.
12444 Introduce new type const_des_cblock.
12447 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
12448 problems: find RecipientInfo structure that matches recipient certificate
12449 and initialise the ASN1 structures properly based on passed cipher.
12452 *) Belatedly make the BN tests actually check the results.
12455 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
12456 to and from BNs: it was completely broken. New compilation option
12457 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
12458 key elements as negative integers.
12461 *) Reorganize and speed up MD5.
12462 [Andy Polyakov <appro@fy.chalmers.se>]
12465 [Richard Levitte <richard@levitte.org>]
12467 *) New option -out to asn1parse to allow the parsed structure to be
12468 output to a file. This is most useful when combined with the -strparse
12469 option to examine the output of things like OCTET STRINGS.
12472 *) Make SSL library a little more fool-proof by not requiring any longer
12473 that SSL_set_{accept,connect}_state be called before
12474 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
12475 in many applications because usually everything *appeared* to work as
12476 intended anyway -- now it really works as intended).
12479 *) Move openssl.cnf out of lib/.
12482 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
12483 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
12484 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
12485 [Ralf S. Engelschall]
12487 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
12488 handle PKCS#7 enveloped data properly.
12489 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
12491 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
12492 copying pointers. The cert_st handling is changed by this in
12493 various ways (and thus what used to be known as ctx->default_cert
12494 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
12495 any longer when s->cert does not give us what we need).
12496 ssl_cert_instantiate becomes obsolete by this change.
12497 As soon as we've got the new code right (possibly it already is?),
12498 we have solved a couple of bugs of the earlier code where s->cert
12499 was used as if it could not have been shared with other SSL structures.
12501 Note that using the SSL API in certain dirty ways now will result
12502 in different behaviour than observed with earlier library versions:
12503 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
12504 does not influence s as it used to.
12506 In order to clean up things more thoroughly, inside SSL_SESSION
12507 we don't use CERT any longer, but a new structure SESS_CERT
12508 that holds per-session data (if available); currently, this is
12509 the peer's certificate chain and, for clients, the server's certificate
12510 and temporary key. CERT holds only those values that can have
12511 meaningful defaults in an SSL_CTX.
12514 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
12515 from the internal representation. Various PKCS#7 fixes: remove some
12516 evil casts and set the enc_dig_alg field properly based on the signing
12520 *) Allow PKCS#12 password to be set from the command line or the
12521 environment. Let 'ca' get its config file name from the environment
12522 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
12526 *) Allow certificate policies extension to use an IA5STRING for the
12527 organization field. This is contrary to the PKIX definition but
12528 VeriSign uses it and IE5 only recognises this form. Document 'x509'
12532 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
12533 without disallowing inline assembler and the like for non-pedantic builds.
12536 *) Support Borland C++ builder.
12537 [Janez Jere <jj@void.si>, modified by Ulf Möller]
12539 *) Support Mingw32.
12542 *) SHA-1 cleanups and performance enhancements.
12543 [Andy Polyakov <appro@fy.chalmers.se>]
12545 *) Sparc v8plus assembler for the bignum library.
12546 [Andy Polyakov <appro@fy.chalmers.se>]
12548 *) Accept any -xxx and +xxx compiler options in Configure.
12551 *) Update HPUX configuration.
12554 *) Add missing sk_<type>_unshift() function to safestack.h
12555 [Ralf S. Engelschall]
12557 *) New function SSL_CTX_use_certificate_chain_file that sets the
12558 "extra_cert"s in addition to the certificate. (This makes sense
12559 only for "PEM" format files, as chains as a whole are not
12563 *) Support verify_depth from the SSL API.
12564 x509_vfy.c had what can be considered an off-by-one-error:
12565 Its depth (which was not part of the external interface)
12566 was actually counting the number of certificates in a chain;
12567 now it really counts the depth.
12570 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
12571 instead of X509err, which often resulted in confusing error
12572 messages since the error codes are not globally unique
12573 (e.g. an alleged error in ssl3_accept when a certificate
12574 didn't match the private key).
12576 *) New function SSL_CTX_set_session_id_context that allows to set a default
12577 value (so that you don't need SSL_set_session_id_context for each
12578 connection using the SSL_CTX).
12581 *) OAEP decoding bug fix.
12584 *) Support INSTALL_PREFIX for package builders, as proposed by
12588 *) New Configure options "threads" and "no-threads". For systems
12589 where the proper compiler options are known (currently Solaris
12590 and Linux), "threads" is the default.
12593 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
12596 *) Install various scripts to $(OPENSSLDIR)/misc, not to
12597 $(INSTALLTOP)/bin -- they shouldn't clutter directories
12598 such as /usr/local/bin.
12601 *) "make linux-shared" to build shared libraries.
12602 [Niels Poppe <niels@netbox.org>]
12604 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
12607 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
12608 extension adding in x509 utility.
12611 *) Remove NOPROTO sections and error code comments.
12614 *) Partial rewrite of the DEF file generator to now parse the ANSI
12618 *) New Configure options --prefix=DIR and --openssldir=DIR.
12621 *) Complete rewrite of the error code script(s). It is all now handled
12622 by one script at the top level which handles error code gathering,
12623 header rewriting and C source file generation. It should be much better
12624 than the old method: it now uses a modified version of Ulf's parser to
12625 read the ANSI prototypes in all header files (thus the old K&R definitions
12626 aren't needed for error creation any more) and do a better job of
12627 translating function codes into names. The old 'ASN1 error code imbedded
12628 in a comment' is no longer necessary and it doesn't use .err files which
12629 have now been deleted. Also the error code call doesn't have to appear all
12630 on one line (which resulted in some large lines...).
12633 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
12636 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
12637 0 (which usually indicates a closed connection), but continue reading.
12640 *) Fix some race conditions.
12643 *) Add support for CRL distribution points extension. Add Certificate
12644 Policies and CRL distribution points documentation.
12647 *) Move the autogenerated header file parts to crypto/opensslconf.h.
12650 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
12651 8 of keying material. Merlin has also confirmed interop with this fix
12652 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
12653 [Merlin Hughes <merlin@baltimore.ie>]
12655 *) Fix lots of warnings.
12656 [Richard Levitte <levitte@stacken.kth.se>]
12658 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
12659 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
12660 [Richard Levitte <levitte@stacken.kth.se>]
12662 *) Fix problems with sizeof(long) == 8.
12663 [Andy Polyakov <appro@fy.chalmers.se>]
12665 *) Change functions to ANSI C.
12668 *) Fix typos in error codes.
12669 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
12671 *) Remove defunct assembler files from Configure.
12674 *) SPARC v8 assembler BIGNUM implementation.
12675 [Andy Polyakov <appro@fy.chalmers.se>]
12677 *) Support for Certificate Policies extension: both print and set.
12678 Various additions to support the r2i method this uses.
12681 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
12682 return a const string when you are expecting an allocated buffer.
12685 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
12686 types DirectoryString and DisplayText.
12689 *) Add code to allow r2i extensions to access the configuration database,
12690 add an LHASH database driver and add several ctx helper functions.
12693 *) Fix an evil bug in bn_expand2() which caused various BN functions to
12694 fail when they extended the size of a BIGNUM.
12697 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
12698 support typesafe stack.
12701 *) Fix typo in SSL_[gs]et_options().
12702 [Nils Frostberg <nils@medcom.se>]
12704 *) Delete various functions and files that belonged to the (now obsolete)
12705 old X509V3 handling code.
12708 *) New Configure option "rsaref".
12711 *) Don't auto-generate pem.h.
12714 *) Introduce type-safe ASN.1 SETs.
12717 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
12718 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
12720 *) Introduce type-safe STACKs. This will almost certainly break lots of code
12721 that links with OpenSSL (well at least cause lots of warnings), but fear
12722 not: the conversion is trivial, and it eliminates loads of evil casts. A
12723 few STACKed things have been converted already. Feel free to convert more.
12724 In the fullness of time, I'll do away with the STACK type altogether.
12727 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
12728 specified in <certfile> by updating the entry in the index.txt file.
12729 This way one no longer has to edit the index.txt file manually for
12730 revoking a certificate. The -revoke option does the gory details now.
12731 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
12733 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
12734 `-text' option at all and this way the `-noout -text' combination was
12735 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
12736 [Ralf S. Engelschall]
12738 *) Make sure a corresponding plain text error message exists for the
12739 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
12740 verify callback function determined that a certificate was revoked.
12741 [Ralf S. Engelschall]
12743 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
12744 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
12745 all available ciphers including rc5, which was forgotten until now.
12746 In order to let the testing shell script know which algorithms
12747 are available, a new (up to now undocumented) command
12748 "openssl list-cipher-commands" is used.
12751 *) Bugfix: s_client occasionally would sleep in select() when
12752 it should have checked SSL_pending() first.
12755 *) New functions DSA_do_sign and DSA_do_verify to provide access to
12756 the raw DSA values prior to ASN.1 encoding.
12759 *) Tweaks to Configure
12760 [Niels Poppe <niels@netbox.org>]
12762 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
12766 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
12769 *) New config option to avoid instructions that are illegal on the 80386.
12770 The default code is faster, but requires at least a 486.
12773 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
12774 SSL2_SERVER_VERSION (not used at all) macros, which are now the
12775 same as SSL2_VERSION anyway.
12778 *) New "-showcerts" option for s_client.
12781 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
12782 application. Various cleanups and fixes.
12785 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
12786 modify error routines to work internally. Add error codes and PBE init
12787 to library startup routines.
12790 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
12791 packing functions to asn1 and evp. Changed function names and error
12792 codes along the way.
12795 *) PKCS12 integration: and so it begins... First of several patches to
12796 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
12797 objects to objects.h
12800 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
12801 and display support for Thawte strong extranet extension.
12804 *) Add LinuxPPC support.
12805 [Jeff Dubrule <igor@pobox.org>]
12807 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
12808 bn_div_words in alpha.s.
12809 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
12811 *) Make sure the RSA OAEP test is skipped under -DRSAref because
12812 OAEP isn't supported when OpenSSL is built with RSAref.
12813 [Ulf Moeller <ulf@fitug.de>]
12815 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
12816 so they no longer are missing under -DNOPROTO.
12817 [Soren S. Jorvang <soren@t.dk>]
12820 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
12822 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
12823 doesn't work when the session is reused. Coming soon!
12826 *) Fix a security hole, that allows sessions to be reused in the wrong
12827 context thus bypassing client cert protection! All software that uses
12828 client certs and session caches in multiple contexts NEEDS PATCHING to
12829 allow session reuse! A fuller solution is in the works.
12830 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
12832 *) Some more source tree cleanups (removed obsolete files
12833 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
12834 permission on "config" script to be executable) and a fix for the INSTALL
12836 [Ulf Moeller <ulf@fitug.de>]
12838 *) Remove some legacy and erroneous uses of malloc, free instead of
12840 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
12842 *) Make rsa_oaep_test return non-zero on error.
12843 [Ulf Moeller <ulf@fitug.de>]
12845 *) Add support for native Solaris shared libraries. Configure
12846 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
12847 if someone would make that last step automatic.
12848 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
12850 *) ctx_size was not built with the right compiler during "make links". Fixed.
12853 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
12854 except NULL ciphers". This means the default cipher list will no longer
12855 enable NULL ciphers. They need to be specifically enabled e.g. with
12856 the string "DEFAULT:eNULL".
12859 *) Fix to RSA private encryption routines: if p < q then it would
12860 occasionally produce an invalid result. This will only happen with
12861 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
12864 *) Be less restrictive and allow also `perl util/perlpath.pl
12865 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
12866 because this way one can also use an interpreter named `perl5' (which is
12867 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
12868 installed as `perl').
12869 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
12871 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
12872 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
12874 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
12875 advapi32.lib to Win32 build and change the pem test comparison
12876 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
12877 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
12878 and crypto/des/ede_cbcm_enc.c.
12881 *) DES quad checksum was broken on big-endian architectures. Fixed.
12884 *) Comment out two functions in bio.h that aren't implemented. Fix up the
12885 Win32 test batch file so it (might) work again. The Win32 test batch file
12886 is horrible: I feel ill....
12889 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
12890 in e_os.h. Audit of header files to check ANSI and non ANSI
12891 sections: 10 functions were absent from non ANSI section and not exported
12892 from Windows DLLs. Fixed up libeay.num for new functions.
12895 *) Make `openssl version' output lines consistent.
12896 [Ralf S. Engelschall]
12898 *) Fix Win32 symbol export lists for BIO functions: Added
12899 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
12900 to ms/libeay{16,32}.def.
12901 [Ralf S. Engelschall]
12903 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
12904 fine under Unix and passes some trivial tests I've now added. But the
12905 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
12906 added to make sure no one expects that this stuff really works in the
12907 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
12908 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
12910 [Ralf S. Engelschall]
12912 *) Fix the generation of two part addresses in perl.
12913 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
12915 *) Add config entry for Linux on MIPS.
12916 [John Tobey <jtobey@channel1.com>]
12918 *) Make links whenever Configure is run, unless we are on Windoze.
12921 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
12922 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
12926 *) Add a useful kludge to allow package maintainers to specify compiler and
12927 other platforms details on the command line without having to patch the
12928 Configure script everytime: One now can use ``perl Configure
12929 <id>:<details>'', i.e. platform ids are allowed to have details appended
12930 to them (separated by colons). This is treated as there would be a static
12931 pre-configured entry in Configure's %table under key <id> with value
12932 <details> and ``perl Configure <id>'' is called. So, when you want to
12933 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
12934 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
12935 now, which overrides the FreeBSD-elf entry on-the-fly.
12936 [Ralf S. Engelschall]
12938 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
12941 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
12942 on the `perl Configure ...' command line. This way one can compile
12943 OpenSSL libraries with Position Independent Code (PIC) which is needed
12944 for linking it into DSOs.
12945 [Ralf S. Engelschall]
12947 *) Remarkably, export ciphers were totally broken and no-one had noticed!
12951 *) Cleaned up the LICENSE document: The official contact for any license
12952 questions now is the OpenSSL core team under openssl-core@openssl.org.
12953 And add a paragraph about the dual-license situation to make sure people
12954 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
12955 to the OpenSSL toolkit.
12956 [Ralf S. Engelschall]
12958 *) General source tree makefile cleanups: Made `making xxx in yyy...'
12959 display consistent in the source tree and replaced `/bin/rm' by `rm'.
12960 Additionally cleaned up the `make links' target: Remove unnecessary
12961 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
12962 to speed processing and no longer clutter the display with confusing
12963 stuff. Instead only the actually done links are displayed.
12964 [Ralf S. Engelschall]
12966 *) Permit null encryption ciphersuites, used for authentication only. It used
12967 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
12968 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
12972 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
12973 signed attributes when verifying signatures (this would break them),
12974 the detached data encoding was wrong and public keys obtained using
12975 X509_get_pubkey() weren't freed.
12978 *) Add text documentation for the BUFFER functions. Also added a work around
12979 to a Win95 console bug. This was triggered by the password read stuff: the
12980 last character typed gets carried over to the next fread(). If you were
12981 generating a new cert request using 'req' for example then the last
12982 character of the passphrase would be CR which would then enter the first
12986 *) Added the new `Includes OpenSSL Cryptography Software' button as
12987 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
12988 button and can be used by applications based on OpenSSL to show the
12989 relationship to the OpenSSL project.
12990 [Ralf S. Engelschall]
12992 *) Remove confusing variables in function signatures in files
12993 ssl/ssl_lib.c and ssl/ssl.h.
12994 [Lennart Bong <lob@kulthea.stacken.kth.se>]
12996 *) Don't install bss_file.c under PREFIX/include/
12997 [Lennart Bong <lob@kulthea.stacken.kth.se>]
12999 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
13000 functions that return function pointers and has support for NT specific
13001 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
13002 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
13003 unsigned to signed types: this was killing the Win32 compile.
13006 *) Add new certificate file to stack functions,
13007 SSL_add_dir_cert_subjects_to_stack() and
13008 SSL_add_file_cert_subjects_to_stack(). These largely supplant
13009 SSL_load_client_CA_file(), and can be used to add multiple certs easily
13010 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
13011 This means that Apache-SSL and similar packages don't have to mess around
13012 to add as many CAs as they want to the preferred list.
13015 *) Experiment with doxygen documentation. Currently only partially applied to
13017 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
13018 openssl.doxy as the configuration file.
13021 *) Get rid of remaining C++-style comments which strict C compilers hate.
13022 [Ralf S. Engelschall, pointed out by Carlos Amengual]
13024 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
13025 compiled in by default: it has problems with large keys.
13028 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
13029 DH private keys and/or callback functions which directly correspond to
13030 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
13031 is needed for applications which have to configure certificates on a
13032 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
13034 For the RSA certificate situation is makes no difference, but
13035 for the DSA certificate situation this fixes the "no shared cipher"
13036 problem where the OpenSSL cipher selection procedure failed because the
13037 temporary keys were not overtaken from the context and the API provided
13038 no way to reconfigure them.
13039 The new functions now let applications reconfigure the stuff and they
13040 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
13041 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
13042 non-public-API function ssl_cert_instantiate() is used as a helper
13043 function and also to reduce code redundancy inside ssl_rsa.c.
13044 [Ralf S. Engelschall]
13046 *) Move s_server -dcert and -dkey options out of the undocumented feature
13047 area because they are useful for the DSA situation and should be
13048 recognized by the users.
13049 [Ralf S. Engelschall]
13051 *) Fix the cipher decision scheme for export ciphers: the export bits are
13052 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
13053 SSL_EXP_MASK. So, the original variable has to be used instead of the
13054 already masked variable.
13055 [Richard Levitte <levitte@stacken.kth.se>]
13057 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
13058 [Richard Levitte <levitte@stacken.kth.se>]
13060 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
13061 from `int' to `unsigned int' because it's a length and initialized by
13062 EVP_DigestFinal() which expects an `unsigned int *'.
13063 [Richard Levitte <levitte@stacken.kth.se>]
13065 *) Don't hard-code path to Perl interpreter on shebang line of Configure
13066 script. Instead use the usual Shell->Perl transition trick.
13067 [Ralf S. Engelschall]
13069 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
13070 (in addition to RSA certificates) to match the behaviour of `openssl dsa
13071 -noout -modulus' as it's already the case for `openssl rsa -noout
13072 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
13073 currently the public key is printed (a decision which was already done by
13074 `openssl dsa -modulus' in the past) which serves a similar purpose.
13075 Additionally the NO_RSA no longer completely removes the whole -modulus
13076 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
13078 [Ralf S. Engelschall]
13080 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
13081 BIO. See the source (crypto/evp/bio_ok.c) for more info.
13082 [Arne Ansper <arne@ats.cyber.ee>]
13084 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
13085 to be added. Now both 'req' and 'ca' can use new objects defined in the
13089 *) Add cool BIO that does syslog (or event log on NT).
13090 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
13092 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
13093 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
13094 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
13095 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
13098 *) Add preliminary config info for new extension code.
13101 *) Make RSA_NO_PADDING really use no padding.
13102 [Ulf Moeller <ulf@fitug.de>]
13104 *) Generate errors when private/public key check is done.
13107 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
13108 for some CRL extensions and new objects added.
13111 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
13112 key usage extension and fuller support for authority key id.
13115 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
13116 padding method for RSA, which is recommended for new applications in PKCS
13117 #1 v2.0 (RFC 2437, October 1998).
13118 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
13119 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
13120 against Bleichbacher's attack on RSA.
13121 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
13124 *) Updates to the new SSL compression code
13125 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13127 *) Fix so that the version number in the master secret, when passed
13128 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
13129 (because the server will not accept higher), that the version number
13130 is 0x03,0x01, not 0x03,0x00
13131 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13133 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
13134 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
13135 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
13138 *) Support for RAW extensions where an arbitrary extension can be
13139 created by including its DER encoding. See apps/openssl.cnf for
13143 *) Make sure latest Perl versions don't interpret some generated C array
13144 code as Perl array code in the crypto/err/err_genc.pl script.
13145 [Lars Weber <3weber@informatik.uni-hamburg.de>]
13147 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
13148 not many people have the assembler. Various Win32 compilation fixes and
13149 update to the INSTALL.W32 file with (hopefully) more accurate Win32
13150 build instructions.
13153 *) Modify configure script 'Configure' to automatically create crypto/date.h
13154 file under Win32 and also build pem.h from pem.org. New script
13155 util/mkfiles.pl to create the MINFO file on environments that can't do a
13156 'make files': perl util/mkfiles.pl >MINFO should work.
13159 *) Major rework of DES function declarations, in the pursuit of correctness
13160 and purity. As a result, many evil casts evaporated, and some weirdness,
13161 too. You may find this causes warnings in your code. Zapping your evil
13162 casts will probably fix them. Mostly.
13165 *) Fix for a typo in asn1.h. Bug fix to object creation script
13166 obj_dat.pl. It considered a zero in an object definition to mean
13167 "end of object": none of the objects in objects.h have any zeros
13168 so it wasn't spotted.
13169 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
13171 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
13172 Masking (CBCM). In the absence of test vectors, the best I have been able
13173 to do is check that the decrypt undoes the encrypt, so far. Send me test
13174 vectors if you have them.
13177 *) Correct calculation of key length for export ciphers (too much space was
13178 allocated for null ciphers). This has not been tested!
13181 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
13182 message is now correct (it understands "crypto" and "ssl" on its
13183 command line). There is also now an "update" option. This will update
13184 the util/ssleay.num and util/libeay.num files with any new functions.
13186 perl util/mkdef.pl crypto ssl update
13187 it will update them.
13190 *) Overhauled the Perl interface (perl/*):
13191 - ported BN stuff to OpenSSL's different BN library
13192 - made the perl/ source tree CVS-aware
13193 - renamed the package from SSLeay to OpenSSL (the files still contain
13194 their history because I've copied them in the repository)
13195 - removed obsolete files (the test scripts will be replaced
13196 by better Test::Harness variants in the future)
13197 [Ralf S. Engelschall]
13199 *) First cut for a very conservative source tree cleanup:
13200 1. merge various obsolete readme texts into doc/ssleay.txt
13201 where we collect the old documents and readme texts.
13202 2. remove the first part of files where I'm already sure that we no
13203 longer need them because of three reasons: either they are just temporary
13204 files which were left by Eric or they are preserved original files where
13205 I've verified that the diff is also available in the CVS via "cvs diff
13206 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
13207 the crypto/md/ stuff).
13208 [Ralf S. Engelschall]
13210 *) More extension code. Incomplete support for subject and issuer alt
13211 name, issuer and authority key id. Change the i2v function parameters
13212 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
13213 what that's for :-) Fix to ASN1 macro which messed up
13214 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
13217 *) Preliminary support for ENUMERATED type. This is largely copied from the
13221 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
13222 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13224 *) Make sure `make rehash' target really finds the `openssl' program.
13225 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
13227 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
13228 like to hear about it if this slows down other processors.
13231 *) Add CygWin32 platform information to Configure script.
13232 [Alan Batie <batie@aahz.jf.intel.com>]
13234 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
13235 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
13237 *) New program nseq to manipulate netscape certificate sequences
13240 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
13244 *) Fixes to BN code. Previously the default was to define BN_RECURSION
13245 but the BN code had some problems that would cause failures when
13246 doing certificate verification and some other functions.
13247 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13249 *) Add ASN1 and PEM code to support netscape certificate sequences.
13252 *) Add ASN1 and PEM code to support netscape certificate sequences.
13255 *) Add several PKIX and private extended key usage OIDs.
13258 *) Modify the 'ca' program to handle the new extension code. Modify
13259 openssl.cnf for new extension format, add comments.
13262 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
13263 and add a sample to openssl.cnf so req -x509 now adds appropriate
13267 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
13268 error code, add initial support to X509_print() and x509 application.
13271 *) Takes a deep breath and start adding X509 V3 extension support code. Add
13272 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
13273 stuff is currently isolated and isn't even compiled yet.
13276 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
13277 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
13278 Removed the versions check from X509 routines when loading extensions:
13279 this allows certain broken certificates that don't set the version
13280 properly to be processed.
13283 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
13284 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
13285 can still be regenerated with "make depend".
13288 *) Spelling mistake in C version of CAST-128.
13289 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
13291 *) Changes to the error generation code. The perl script err-code.pl
13292 now reads in the old error codes and retains the old numbers, only
13293 adding new ones if necessary. It also only changes the .err files if new
13294 codes are added. The makefiles have been modified to only insert errors
13295 when needed (to avoid needlessly modifying header files). This is done
13296 by only inserting errors if the .err file is newer than the auto generated
13297 C file. To rebuild all the error codes from scratch (the old behaviour)
13298 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
13299 or delete all the .err files.
13302 *) CAST-128 was incorrectly implemented for short keys. The C version has
13303 been fixed, but is untested. The assembler versions are also fixed, but
13304 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
13305 to regenerate it if needed.
13306 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
13307 Hagino <itojun@kame.net>]
13309 *) File was opened incorrectly in randfile.c.
13310 [Ulf Möller <ulf@fitug.de>]
13312 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
13313 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
13314 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
13315 al: it's just almost always a UTCTime. Note this patch adds new error
13316 codes so do a "make errors" if there are problems.
13319 *) Correct Linux 1 recognition in config.
13320 [Ulf Möller <ulf@fitug.de>]
13322 *) Remove pointless MD5 hash when using DSA keys in ca.
13323 [Anonymous <nobody@replay.com>]
13325 *) Generate an error if given an empty string as a cert directory. Also
13326 generate an error if handed NULL (previously returned 0 to indicate an
13327 error, but didn't set one).
13328 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
13330 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
13333 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
13334 parameters. This was causing a warning which killed off the Win32 compile.
13337 *) Remove C++ style comments from crypto/bn/bn_local.h.
13338 [Neil Costigan <neil.costigan@celocom.com>]
13340 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
13341 based on a text string, looking up short and long names and finally
13342 "dot" format. The "dot" format stuff didn't work. Added new function
13343 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
13344 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
13345 OID is not part of the table.
13348 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
13349 X509_LOOKUP_by_alias().
13352 *) Sort openssl functions by name.
13355 *) Get the gendsa program working (hopefully) and add it to app list. Remove
13356 encryption from sample DSA keys (in case anyone is interested the password
13360 *) Make _all_ *_free functions accept a NULL pointer.
13361 [Frans Heymans <fheymans@isaserver.be>]
13363 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
13365 [Anonymous <nobody@replay.com>]
13367 *) s_server should send the CAfile as acceptable CAs, not its own cert.
13368 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
13370 *) Don't blow it for numeric -newkey arguments to apps/req.
13371 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
13373 *) Temp key "for export" tests were wrong in s3_srvr.c.
13374 [Anonymous <nobody@replay.com>]
13376 *) Add prototype for temp key callback functions
13377 SSL_CTX_set_tmp_{rsa,dh}_callback().
13380 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
13381 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
13384 *) X509_name_add_entry() freed the wrong thing after an error.
13385 [Arne Ansper <arne@ats.cyber.ee>]
13387 *) rsa_eay.c would attempt to free a NULL context.
13388 [Arne Ansper <arne@ats.cyber.ee>]
13390 *) BIO_s_socket() had a broken should_retry() on Windoze.
13391 [Arne Ansper <arne@ats.cyber.ee>]
13393 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
13394 [Arne Ansper <arne@ats.cyber.ee>]
13396 *) Make sure the already existing X509_STORE->depth variable is initialized
13397 in X509_STORE_new(), but document the fact that this variable is still
13398 unused in the certificate verification process.
13399 [Ralf S. Engelschall]
13401 *) Fix the various library and apps files to free up pkeys obtained from
13402 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
13405 *) Fix reference counting in X509_PUBKEY_get(). This makes
13406 demos/maurice/example2.c work, amongst others, probably.
13407 [Steve Henson and Ben Laurie]
13409 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
13410 `openssl' and second, the shortcut symlinks for the `openssl <command>'
13411 are no longer created. This way we have a single and consistent command
13412 line interface `openssl <command>', similar to `cvs <command>'.
13413 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
13415 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
13416 BIT STRING wrapper always have zero unused bits.
13419 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
13422 *) Make the top-level INSTALL documentation easier to understand.
13425 *) Makefiles updated to exit if an error occurs in a sub-directory
13426 make (including if user presses ^C) [Paul Sutton]
13428 *) Make Montgomery context stuff explicit in RSA data structure.
13431 *) Fix build order of pem and err to allow for generated pem.h.
13434 *) Fix renumbering bug in X509_NAME_delete_entry().
13437 *) Enhanced the err-ins.pl script so it makes the error library number
13438 global and can add a library name. This is needed for external ASN1 and
13439 other error libraries.
13442 *) Fixed sk_insert which never worked properly.
13445 *) Fix ASN1 macros so they can handle indefinite length constructed
13446 EXPLICIT tags. Some non standard certificates use these: they can now
13450 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
13451 into a single doc/ssleay.txt bundle. This way the information is still
13452 preserved but no longer messes up this directory. Now it's new room for
13453 the new set of documentation files.
13454 [Ralf S. Engelschall]
13456 *) SETs were incorrectly DER encoded. This was a major pain, because they
13457 shared code with SEQUENCEs, which aren't coded the same. This means that
13458 almost everything to do with SETs or SEQUENCEs has either changed name or
13459 number of arguments.
13460 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
13462 *) Fix test data to work with the above.
13465 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
13466 was already fixed by Eric for 0.9.1 it seems.
13467 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
13469 *) Autodetect FreeBSD3.
13472 *) Fix various bugs in Configure. This affects the following platforms:
13476 unixware-2.0-pentium
13480 *) Eliminate generated files from CVS. Reorder tests to regenerate files
13481 before they are needed.
13484 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
13488 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
13490 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
13491 changed SSLeay to OpenSSL in version strings.
13492 [Ralf S. Engelschall]
13494 *) Some fixups to the top-level documents.
13497 *) Fixed the nasty bug where rsaref.h was not found under compile-time
13498 because the symlink to include/ was missing.
13499 [Ralf S. Engelschall]
13501 *) Incorporated the popular no-RSA/DSA-only patches
13502 which allow to compile a RSA-free SSLeay.
13503 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
13505 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
13506 when "ssleay" is still not found.
13507 [Ralf S. Engelschall]
13509 *) Added more platforms to Configure: Cray T3E, HPUX 11,
13510 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
13512 *) Updated the README file.
13513 [Ralf S. Engelschall]
13515 *) Added various .cvsignore files in the CVS repository subdirs
13516 to make a "cvs update" really silent.
13517 [Ralf S. Engelschall]
13519 *) Recompiled the error-definition header files and added
13520 missing symbols to the Win32 linker tables.
13521 [Ralf S. Engelschall]
13523 *) Cleaned up the top-level documents;
13524 o new files: CHANGES and LICENSE
13525 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
13526 o merged COPYRIGHT into LICENSE
13527 o removed obsolete TODO file
13528 o renamed MICROSOFT to INSTALL.W32
13529 [Ralf S. Engelschall]
13531 *) Removed dummy files from the 0.9.1b source tree:
13532 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
13533 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
13534 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
13535 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
13536 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
13537 [Ralf S. Engelschall]
13539 *) Added various platform portability fixes.
13542 *) The Genesis of the OpenSSL rpject:
13543 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
13544 Young and Tim J. Hudson created while they were working for C2Net until
13546 [The OpenSSL Project]
13549 Changes between 0.9.0b and 0.9.1b [not released]
13551 *) Updated a few CA certificates under certs/
13554 *) Changed some BIGNUM api stuff.
13557 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
13558 DGUX x86, Linux Alpha, etc.
13561 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
13562 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
13566 *) Add -strparse option to asn1pars program which parses nested
13568 [Dr Stephen Henson <shenson@bigfoot.com>]
13570 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
13573 *) DSA fix for "ca" program.
13576 *) Added "-genkey" option to "dsaparam" program.
13579 *) Added RIPE MD160 (rmd160) message digest.
13582 *) Added -a (all) option to "ssleay version" command.
13585 *) Added PLATFORM define which is the id given to Configure.
13588 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
13591 *) Extended the ASN.1 parser routines.
13594 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
13597 *) Added a BN_CTX to the BN library.
13600 *) Fixed the weak key values in DES library
13603 *) Changed API in EVP library for cipher aliases.
13606 *) Added support for RC2/64bit cipher.
13609 *) Converted the lhash library to the crypto/mem.c functions.
13612 *) Added more recognized ASN.1 object ids.
13615 *) Added more RSA padding checks for SSL/TLS.
13618 *) Added BIO proxy/filter functionality.
13621 *) Added extra_certs to SSL_CTX which can be used
13622 send extra CA certificates to the client in the CA cert chain sending
13623 process. It can be configured with SSL_CTX_add_extra_chain_cert().
13626 *) Now Fortezza is denied in the authentication phase because
13627 this is key exchange mechanism is not supported by SSLeay at all.
13630 *) Additional PKCS1 checks.
13633 *) Support the string "TLSv1" for all TLS v1 ciphers.
13636 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
13637 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
13640 *) Fixed a few memory leaks.
13643 *) Fixed various code and comment typos.
13646 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
13647 bytes sent in the client random.
13648 [Edward Bishop <ebishop@spyglass.com>]
projects / openssl.git / blob