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 *) Removed include/openssl/opensslconf.h.in and replaced it with
13 include/openssl/configuration.h.in, which differs in not including
14 <openssl/macros.h>. A short header include/openssl/opensslconf.h
15 was added to include both.
17 This allows internal hacks where one might need to modify the set
18 of configured macros, for example this if deprecated symbols are
19 still supposed to be available internally:
21 #include <openssl/configuration.h>
23 #undef OPENSSL_NO_DEPRECATED
24 #define OPENSSL_SUPPRESS_DEPRECATED
26 #include <openssl/macros.h>
28 This should not be used by applications that use the exported
29 symbols, as that will lead to linking errors.
32 *) Fixed an an overflow bug in the x64_64 Montgomery squaring procedure
33 used in exponentiation with 512-bit moduli. No EC algorithms are
34 affected. Analysis suggests that attacks against 2-prime RSA1024,
35 3-prime RSA1536, and DSA1024 as a result of this defect would be very
36 difficult to perform and are not believed likely. Attacks against DH512
37 are considered just feasible. However, for an attack the target would
38 have to re-use the DH512 private key, which is not recommended anyway.
39 Also applications directly using the low level API BN_mod_exp may be
40 affected if they use BN_FLG_CONSTTIME.
44 *) Introduced a new method type and API, OSSL_SERIALIZER, to
45 represent generic serializers. An implementation is expected to
46 be able to serialize an object associated with a given name (such
47 as an algorithm name for an asymmetric key) into forms given by
48 implementation properties.
50 Serializers are primarily used from inside libcrypto, through
51 calls to functions like EVP_PKEY_print_private(),
52 PEM_write_bio_PrivateKey() and similar.
54 Serializers are specified in such a way that they can be made to
55 directly handle the provider side portion of an object, if this
56 provider side part comes from the same provider as the serializer
57 itself, but can also be made to handle objects in parametrized
58 form (as an OSSL_PARAM array of data). This allows a provider to
59 offer generic serializers as a service for any other provider.
62 *) Added a .pragma directive to the syntax of configuration files, to
63 allow varying behavior in a supported and predictable manner.
64 Currently added pragma:
68 This allows dollar signs to be a keyword character unless it's
69 followed by a opening brace or parenthesis. This is useful for
70 platforms where dollar signs are commonly used in names, such as
71 volume names and system directory names on VMS.
74 *) Added functionality to create an EVP_PKEY from user data. This
75 is effectively the same as creating a RSA, DH or DSA object and
76 then assigning them to an EVP_PKEY, but directly using algorithm
77 agnostic EVP functions. A benefit is that this should be future
78 proof for public key algorithms to come.
81 *) Change the interpretation of the '--api' configuration option to
82 mean that this is a desired API compatibility level with no
83 further meaning. The previous interpretation, that this would
84 also mean to remove all deprecated symbols up to and including
85 the given version, no requires that 'no-deprecated' is also used
88 When building applications, the desired API compatibility level
89 can be set with the OPENSSL_API_COMPAT macro like before. For
90 API compatibility version below 3.0, the old style numerical
91 value is valid as before, such as -DOPENSSL_API_COMPAT=0x10100000L.
92 For version 3.0 and on, the value is expected to be the decimal
93 value calculated from the major and minor version like this:
95 MAJOR * 10000 + MINOR * 100
99 -DOPENSSL_API_COMPAT=30000 For 3.0
100 -DOPENSSL_API_COMPAT=30200 For 3.2
102 To hide declarations that are deprecated up to and including the
103 given API compatibility level, -DOPENSSL_NO_DEPRECATED must be
104 given when building the application as well.
107 *) Added the X509_LOOKUP_METHOD called X509_LOOKUP_store, to allow
108 access to certificate and CRL stores via URIs and OSSL_STORE
111 This adds the following functions:
114 X509_STORE_load_file()
115 X509_STORE_load_path()
116 X509_STORE_load_store()
117 SSL_add_store_cert_subjects_to_stack()
118 SSL_CTX_set_default_verify_store()
119 SSL_CTX_load_verify_file()
120 SSL_CTX_load_verify_dir()
121 SSL_CTX_load_verify_store()
123 Also, the following functions are now deprecated:
125 - X509_STORE_load_locations() (use X509_STORE_load_file(),
126 X509_STORE_load_path() or X509_STORE_load_store() instead)
127 - SSL_CTX_load_verify_locations() (use SSL_CTX_load_verify_file(),
128 SSL_CTX_load_verify_dir() or SSL_CTX_load_verify_store() instead)
131 *) Added a new method to gather entropy on VMS, based on SYS$GET_ENTROPY.
132 The presence of this system service is determined at run-time.
135 *) Added functionality to create an EVP_PKEY context based on data
136 for methods from providers. This takes an algorithm name and a
137 property query string and simply stores them, with the intent
138 that any operation that uses this context will use those strings
139 to fetch the needed methods implicitly, thereby making the port
140 of application written for pre-3.0 OpenSSL easier.
143 *) The undocumented function NCONF_WIN32() has been deprecated; for
144 conversion details see the HISTORY section of doc/man5/config.pod
147 *) Introduced the new functions EVP_DigestSignInit_ex() and
148 EVP_DigestVerifyInit_ex(). The macros EVP_DigestSignUpdate() and
149 EVP_DigestVerifyUpdate() have been converted to functions. See the man
150 pages for further details.
153 *) Over two thousand fixes were made to the documentation, including:
154 adding missing command flags, better style conformance, documentation
156 [Rich Salz, Richard Levitte]
158 *) s390x assembly pack: add hardware-support for P-256, P-384, P-521,
159 X25519, X448, Ed25519 and Ed448.
162 *) Print all values for a PKCS#12 attribute with 'openssl pkcs12', not just
166 *) Deprecated the public definition of ERR_STATE as well as the function
167 ERR_get_state(). This is done in preparation of making ERR_STATE an
171 *) Added ERR functionality to give callers access to the stored function
172 names that have replaced the older function code based functions.
174 New functions are ERR_get_error_func(), ERR_peek_error_func(),
175 ERR_peek_last_error_func(), ERR_get_error_data(), ERR_peek_error_data(),
176 ERR_peek_last_error_data(), ERR_get_error_all(), ERR_peek_error_all()
177 and ERR_peek_last_error_all().
179 These functions have become deprecated: ERR_get_error_line_data(),
180 ERR_peek_error_line_data(), ERR_peek_last_error_line_data() and
181 ERR_func_error_string().
184 *) Extended testing to be verbose for failing tests only. The make variables
185 VERBOSE_FAILURE or VF can be used to enable this:
187 $ make VF=1 test # Unix
188 $ mms /macro=(VF=1) test ! OpenVMS
189 $ nmake VF=1 test # Windows
193 *) For built-in EC curves, ensure an EC_GROUP built from the curve name is
194 used even when parsing explicit parameters, when loading a serialized key
195 or calling `EC_GROUP_new_from_ecpkparameters()`/
196 `EC_GROUP_new_from_ecparameters()`.
197 This prevents bypass of security hardening and performance gains,
198 especially for curves with specialized EC_METHODs.
199 By default, if a key encoded with explicit parameters is loaded and later
200 serialized, the output is still encoded with explicit parameters, even if
201 internally a "named" EC_GROUP is used for computation.
204 *) Compute ECC cofactors if not provided during EC_GROUP construction. Before
205 this change, EC_GROUP_set_generator would accept order and/or cofactor as
206 NULL. After this change, only the cofactor parameter can be NULL. It also
207 does some minimal sanity checks on the passed order.
211 *) Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey.
212 An attack is simple, if the first CMS_recipientInfo is valid but the
213 second CMS_recipientInfo is chosen ciphertext. If the second
214 recipientInfo decodes to PKCS #1 v1.5 form plaintext, the correct
215 encryption key will be replaced by garbage, and the message cannot be
216 decoded, but if the RSA decryption fails, the correct encryption key is
217 used and the recipient will not notice the attack.
218 As a work around for this potential attack the length of the decrypted
219 key must be equal to the cipher default key length, in case the
220 certifiate is not given and all recipientInfo are tried out.
221 The old behaviour can be re-enabled in the CMS code by setting the
222 CMS_DEBUG_DECRYPT flag.
225 *) Early start up entropy quality from the DEVRANDOM seed source has been
226 improved for older Linux systems. The RAND subsystem will wait for
227 /dev/random to be producing output before seeding from /dev/urandom.
228 The seeded state is stored for future library initialisations using
229 a system global shared memory segment. The shared memory identifier
230 can be configured by defining OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID to
231 the desired value. The default identifier is 114.
234 *) Revised BN_generate_prime_ex to not avoid factors 2..17863 in p-1
235 when primes for RSA keys are computed.
236 Since we previously always generated primes == 2 (mod 3) for RSA keys,
237 the 2-prime and 3-prime RSA modules were easy to distinguish, since
238 N = p*q = 1 (mod 3), but N = p*q*r = 2 (mod 3). Therefore fingerprinting
239 2-prime vs. 3-prime RSA keys was possible by computing N mod 3.
240 This avoids possible fingerprinting of newly generated RSA modules.
243 *) Correct the extended master secret constant on EBCDIC systems. Without this
244 fix TLS connections between an EBCDIC system and a non-EBCDIC system that
245 negotiate EMS will fail. Unfortunately this also means that TLS connections
246 between EBCDIC systems with this fix, and EBCDIC systems without this
247 fix will fail if they negotiate EMS.
250 *) Changed the library initialisation so that the config file is now loaded
251 by default. This was already the case for libssl. It now occurs for both
252 libcrypto and libssl. Use the OPENSSL_INIT_NO_LOAD_CONFIG option to
253 OPENSSL_init_crypto() to suppress automatic loading of a config file.
256 *) Introduced new error raising macros, ERR_raise() and ERR_raise_data(),
257 where the former acts as a replacement for ERR_put_error(), and the
258 latter replaces the combination ERR_put_error()+ERR_add_error_data().
259 ERR_raise_data() adds more flexibility by taking a format string and
260 an arbitrary number of arguments following it, to be processed with
264 *) Introduced a new function, OSSL_PROVIDER_available(), which can be used
265 to check if a named provider is loaded and available. When called, it
266 will also activate all fallback providers if such are still present.
269 *) Enforce a minimum DH modulus size of 512 bits.
272 *) Changed DH parameters to generate the order q subgroup instead of 2q.
273 Previously generated DH parameters are still accepted by DH_check
274 but DH_generate_key works around that by clearing bit 0 of the
275 private key for those. This avoids leaking bit 0 of the private key.
278 *) Significantly reduce secure memory usage by the randomness pools.
281 *) {CRYPTO,OPENSSL}_mem_debug_{push,pop} are now no-ops and have been
285 *) A new type, EVP_KEYEXCH, has been introduced to represent key exchange
286 algorithms. An implementation of a key exchange algorithm can be obtained
287 by using the function EVP_KEYEXCH_fetch(). An EVP_KEYEXCH algorithm can be
288 used in a call to EVP_PKEY_derive_init_ex() which works in a similar way to
289 the older EVP_PKEY_derive_init() function. See the man pages for the new
290 functions for further details.
293 *) The EVP_PKEY_CTX_set_dh_pad() macro has now been converted to a function.
296 *) Removed the function names from error messages and deprecated the
299 *) Removed NextStep support and the macro OPENSSL_UNISTD
302 *) Removed DES_check_key. Also removed OPENSSL_IMPLEMENT_GLOBAL,
303 OPENSSL_GLOBAL_REF, OPENSSL_DECLARE_GLOBAL.
304 Also removed "export var as function" capability; we do not export
305 variables, only functions.
308 *) RC5_32_set_key has been changed to return an int type, with 0 indicating
309 an error and 1 indicating success. In previous versions of OpenSSL this
310 was a void type. If a key was set longer than the maximum possible this
314 *) Support SM2 signing and verification schemes with X509 certificate.
317 *) Use SHA256 as the default digest for TS query in the ts app.
320 *) Change PBKDF2 to conform to SP800-132 instead of the older PKCS5 RFC2898.
321 This checks that the salt length is at least 128 bits, the derived key
322 length is at least 112 bits, and that the iteration count is at least 1000.
323 For backwards compatibility these checks are disabled by default in the
324 default provider, but are enabled by default in the fips provider.
325 To enable or disable these checks use the control
326 EVP_KDF_CTRL_SET_PBKDF2_PKCS5_MODE.
329 *) Default cipher lists/suites are now available via a function, the
330 #defines are deprecated.
333 *) Add target VC-WIN32-UWP, VC-WIN64A-UWP, VC-WIN32-ARM-UWP and
334 VC-WIN64-ARM-UWP in Windows OneCore target for making building libraries
335 for Windows Store apps easier. Also, the "no-uplink" option has been added.
338 *) Join the directories crypto/x509 and crypto/x509v3
341 *) Change the default RSA, DSA and DH size to 2048 bit instead of 1024.
342 This changes the size when using the genpkey app when no size is given. It
343 fixes an omission in earlier changes that changed all RSA, DSA and DH
344 generation apps to use 2048 bits by default.
347 *) Added command 'openssl kdf' that uses the EVP_KDF API.
350 *) Added command 'openssl mac' that uses the EVP_MAC API.
353 *) Added OPENSSL_info() to get diverse built-in OpenSSL data, such
354 as default directories. Also added the command 'openssl info'
355 for scripting purposes.
358 *) The functions AES_ige_encrypt() and AES_bi_ige_encrypt() have been
359 deprecated. These undocumented functions were never integrated into the EVP
360 layer and implement the AES Infinite Garble Extension (IGE) mode and AES
361 Bi-directional IGE mode. These modes were never formally standardised and
362 usage of these functions is believed to be very small. In particular
363 AES_bi_ige_encrypt() has a known bug. It accepts 2 AES keys, but only one
364 is ever used. The security implications are believed to be minimal, but
365 this issue was never fixed for backwards compatibility reasons. New code
366 should not use these modes.
369 *) Add prediction resistance to the DRBG reseeding process.
372 *) Limit the number of blocks in a data unit for AES-XTS to 2^20 as
373 mandated by IEEE Std 1619-2018.
376 *) Added newline escaping functionality to a filename when using openssl dgst.
377 This output format is to replicate the output format found in the '*sum'
378 checksum programs. This aims to preserve backward compatibility.
379 [Matt Eaton, Richard Levitte, and Paul Dale]
381 *) Removed the heartbeat message in DTLS feature, as it has very
382 little usage and doesn't seem to fulfill a valuable purpose.
383 The configuration option is now deprecated.
386 *) Changed the output of 'openssl {digestname} < file' to display the
387 digest name in its output.
390 *) Added a new generic trace API which provides support for enabling
391 instrumentation through trace output. This feature is mainly intended
392 as an aid for developers and is disabled by default. To utilize it,
393 OpenSSL needs to be configured with the `enable-trace` option.
395 If the tracing API is enabled, the application can activate trace output
396 by registering BIOs as trace channels for a number of tracing and debugging
399 The 'openssl' application has been expanded to enable any of the types
400 available via environment variables defined by the user, and serves as
401 one possible example on how to use this functionality.
402 [Richard Levitte & Matthias St. Pierre]
404 *) Added build tests for C++. These are generated files that only do one
405 thing, to include one public OpenSSL head file each. This tests that
406 the public header files can be usefully included in a C++ application.
408 This test isn't enabled by default. It can be enabled with the option
409 'enable-buildtest-c++'.
412 *) Add Single Step KDF (EVP_KDF_SS) to EVP_KDF.
415 *) Add KMAC to EVP_MAC.
418 *) Added property based algorithm implementation selection framework to
422 *) Added SCA hardening for modular field inversion in EC_GROUP through
423 a new dedicated field_inv() pointer in EC_METHOD.
424 This also addresses a leakage affecting conversions from projective
425 to affine coordinates.
426 [Billy Bob Brumley, Nicola Tuveri]
428 *) Added EVP_KDF, an EVP layer KDF API, to simplify adding KDF and PRF
429 implementations. This includes an EVP_PKEY to EVP_KDF bridge for
430 those algorithms that were already supported through the EVP_PKEY API
431 (scrypt, TLS1 PRF and HKDF). The low-level KDF functions for PBKDF2
432 and scrypt are now wrappers that call EVP_KDF.
435 *) Build devcrypto engine as a dynamic engine.
438 *) Add keyed BLAKE2 to EVP_MAC.
441 *) Fix a bug in the computation of the endpoint-pair shared secret used
442 by DTLS over SCTP. This breaks interoperability with older versions
443 of OpenSSL like OpenSSL 1.1.0 and OpenSSL 1.0.2. There is a runtime
444 switch SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG (off by default) enabling
445 interoperability with such broken implementations. However, enabling
446 this switch breaks interoperability with correct implementations.
448 *) Fix a use after free bug in d2i_X509_PUBKEY when overwriting a
449 re-used X509_PUBKEY object if the second PUBKEY is malformed.
452 *) Move strictness check from EVP_PKEY_asn1_new() to EVP_PKEY_asn1_add0().
455 *) Change the license to the Apache License v2.0.
458 *) Switch to a new version scheme using three numbers MAJOR.MINOR.PATCH.
460 o Major releases (indicated by incrementing the MAJOR release number)
461 may introduce incompatible API/ABI changes.
462 o Minor releases (indicated by incrementing the MINOR release number)
463 may introduce new features but retain API/ABI compatibility.
464 o Patch releases (indicated by incrementing the PATCH number)
465 are intended for bug fixes and other improvements of existing
466 features only (like improving performance or adding documentation)
467 and retain API/ABI compatibility.
470 *) Add support for RFC5297 SIV mode (siv128), including AES-SIV.
473 *) Remove the 'dist' target and add a tarball building script. The
474 'dist' target has fallen out of use, and it shouldn't be
475 necessary to configure just to create a source distribution.
478 *) Recreate the OS390-Unix config target. It no longer relies on a
479 special script like it did for OpenSSL pre-1.1.0.
482 *) Instead of having the source directories listed in Configure, add
483 a 'build.info' keyword SUBDIRS to indicate what sub-directories to
487 *) Add GMAC to EVP_MAC.
490 *) Ported the HMAC, CMAC and SipHash EVP_PKEY_METHODs to EVP_MAC.
493 *) Added EVP_MAC, an EVP layer MAC API, to simplify adding MAC
494 implementations. This includes a generic EVP_PKEY to EVP_MAC bridge,
495 to facilitate the continued use of MACs through raw private keys in
496 functionality such as EVP_DigestSign* and EVP_DigestVerify*.
499 *) Deprecate ECDH_KDF_X9_62() and mark its replacement as internal. Users
500 should use the EVP interface instead (EVP_PKEY_CTX_set_ecdh_kdf_type).
503 *) Added EVP_PKEY_ECDH_KDF_X9_63 and ecdh_KDF_X9_63() as replacements for
504 the EVP_PKEY_ECDH_KDF_X9_62 KDF type and ECDH_KDF_X9_62(). The old names
505 are retained for backwards compatibility.
508 *) AES-XTS mode now enforces that its two keys are different to mitigate
509 the attacked described in "Efficient Instantiations of Tweakable
510 Blockciphers and Refinements to Modes OCB and PMAC" by Phillip Rogaway.
511 Details of this attack can be obtained from:
512 http://web.cs.ucdavis.edu/%7Erogaway/papers/offsets.pdf
515 *) Rename the object files, i.e. give them other names than in previous
516 versions. Their names now include the name of the final product, as
517 well as its type mnemonic (bin, lib, shlib).
520 *) Added new option for 'openssl list', '-objects', which will display the
521 list of built in objects, i.e. OIDs with names.
524 *) Added support for Linux Kernel TLS data-path. The Linux Kernel data-path
525 improves application performance by removing data copies and providing
526 applications with zero-copy system calls such as sendfile and splice.
529 Changes between 1.1.1a and 1.1.1b [xx XXX xxxx]
531 *) Change the info callback signals for the start and end of a post-handshake
532 message exchange in TLSv1.3. In 1.1.1/1.1.1a we used SSL_CB_HANDSHAKE_START
533 and SSL_CB_HANDSHAKE_DONE. Experience has shown that many applications get
534 confused by this and assume that a TLSv1.2 renegotiation has started. This
535 can break KeyUpdate handling. Instead we no longer signal the start and end
536 of a post handshake message exchange (although the messages themselves are
537 still signalled). This could break some applications that were expecting
538 the old signals. However without this KeyUpdate is not usable for many
542 Changes between 1.1.1 and 1.1.1a [20 Nov 2018]
544 *) Timing vulnerability in DSA signature generation
546 The OpenSSL DSA signature algorithm has been shown to be vulnerable to a
547 timing side channel attack. An attacker could use variations in the signing
548 algorithm to recover the private key.
550 This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser.
554 *) Timing vulnerability in ECDSA signature generation
556 The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a
557 timing side channel attack. An attacker could use variations in the signing
558 algorithm to recover the private key.
560 This issue was reported to OpenSSL on 25th October 2018 by Samuel Weiser.
564 *) Fixed the issue that RAND_add()/RAND_seed() silently discards random input
565 if its length exceeds 4096 bytes. The limit has been raised to a buffer size
566 of two gigabytes and the error handling improved.
568 This issue was reported to OpenSSL by Dr. Falko Strenzke. It has been
569 categorized as a normal bug, not a security issue, because the DRBG reseeds
570 automatically and is fully functional even without additional randomness
571 provided by the application.
573 Changes between 1.1.0i and 1.1.1 [11 Sep 2018]
575 *) Add a new ClientHello callback. Provides a callback interface that gives
576 the application the ability to adjust the nascent SSL object at the
577 earliest stage of ClientHello processing, immediately after extensions have
578 been collected but before they have been processed. In particular, this
579 callback can adjust the supported TLS versions in response to the contents
583 *) Add SM2 base algorithm support.
586 *) s390x assembly pack: add (improved) hardware-support for the following
587 cryptographic primitives: sha3, shake, aes-gcm, aes-ccm, aes-ctr, aes-ofb,
588 aes-cfb/cfb8, aes-ecb.
591 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
592 parameter is no longer accepted, as it leads to a corrupt table. NULL
593 pem_str is reserved for alias entries only.
596 *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
597 step for prime curves. The new implementation is based on formulae from
598 differential addition-and-doubling in homogeneous projective coordinates
599 from Izu-Takagi "A fast parallel elliptic curve multiplication resistant
600 against side channel attacks" and Brier-Joye "Weierstrass Elliptic Curves
601 and Side-Channel Attacks" Eq. (8) for y-coordinate recovery, modified
602 to work in projective coordinates.
603 [Billy Bob Brumley, Nicola Tuveri]
605 *) Change generating and checking of primes so that the error rate of not
606 being prime depends on the intended use based on the size of the input.
607 For larger primes this will result in more rounds of Miller-Rabin.
608 The maximal error rate for primes with more than 1080 bits is lowered
610 [Kurt Roeckx, Annie Yousar]
612 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64.
615 *) The 'tsget' script is renamed to 'tsget.pl', to avoid confusion when
616 moving between systems, and to avoid confusion when a Windows build is
617 done with mingw vs with MSVC. For POSIX installs, there's still a
618 symlink or copy named 'tsget' to avoid that confusion as well.
621 *) Revert blinding in ECDSA sign and instead make problematic addition
622 length-invariant. Switch even to fixed-length Montgomery multiplication.
625 *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
626 step for binary curves. The new implementation is based on formulae from
627 differential addition-and-doubling in mixed Lopez-Dahab projective
628 coordinates, modified to independently blind the operands.
629 [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri]
631 *) Add a scaffold to optionally enhance the Montgomery ladder implementation
632 for `ec_scalar_mul_ladder` (formerly `ec_mul_consttime`) allowing
633 EC_METHODs to implement their own specialized "ladder step", to take
634 advantage of more favorable coordinate systems or more efficient
635 differential addition-and-doubling algorithms.
636 [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri]
638 *) Modified the random device based seed sources to keep the relevant
639 file descriptors open rather than reopening them on each access.
640 This allows such sources to operate in a chroot() jail without
641 the associated device nodes being available. This behaviour can be
642 controlled using RAND_keep_random_devices_open().
645 *) Numerous side-channel attack mitigations have been applied. This may have
646 performance impacts for some algorithms for the benefit of improved
647 security. Specific changes are noted in this change log by their respective
651 *) AIX shared library support overhaul. Switch to AIX "natural" way of
652 handling shared libraries, which means collecting shared objects of
653 different versions and bitnesses in one common archive. This allows to
654 mitigate conflict between 1.0 and 1.1 side-by-side installations. It
655 doesn't affect the way 3rd party applications are linked, only how
656 multi-version installation is managed.
659 *) Make ec_group_do_inverse_ord() more robust and available to other
660 EC cryptosystems, so that irrespective of BN_FLG_CONSTTIME, SCA
661 mitigations are applied to the fallback BN_mod_inverse().
662 When using this function rather than BN_mod_inverse() directly, new
663 EC cryptosystem implementations are then safer-by-default.
666 *) Add coordinate blinding for EC_POINT and implement projective
667 coordinate blinding for generic prime curves as a countermeasure to
668 chosen point SCA attacks.
669 [Sohaib ul Hassan, Nicola Tuveri, Billy Bob Brumley]
671 *) Add blinding to ECDSA and DSA signatures to protect against side channel
672 attacks discovered by Keegan Ryan (NCC Group).
675 *) Enforce checking in the pkeyutl command line app to ensure that the input
676 length does not exceed the maximum supported digest length when performing
677 a sign, verify or verifyrecover operation.
680 *) SSL_MODE_AUTO_RETRY is enabled by default. Applications that use blocking
681 I/O in combination with something like select() or poll() will hang. This
682 can be turned off again using SSL_CTX_clear_mode().
683 Many applications do not properly handle non-application data records, and
684 TLS 1.3 sends more of such records. Setting SSL_MODE_AUTO_RETRY works
685 around the problems in those applications, but can also break some.
686 It's recommended to read the manpages about SSL_read(), SSL_write(),
687 SSL_get_error(), SSL_shutdown(), SSL_CTX_set_mode() and
688 SSL_CTX_set_read_ahead() again.
691 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
692 now allow empty (zero character) pass phrases.
695 *) Apply blinding to binary field modular inversion and remove patent
696 pending (OPENSSL_SUN_GF2M_DIV) BN_GF2m_mod_div implementation.
699 *) Deprecate ec2_mult.c and unify scalar multiplication code paths for
700 binary and prime elliptic curves.
703 *) Remove ECDSA nonce padding: EC_POINT_mul is now responsible for
704 constant time fixed point multiplication.
707 *) Revise elliptic curve scalar multiplication with timing attack
708 defenses: ec_wNAF_mul redirects to a constant time implementation
709 when computing fixed point and variable point multiplication (which
710 in OpenSSL are mostly used with secret scalars in keygen, sign,
711 ECDH derive operations).
712 [Billy Bob Brumley, Nicola Tuveri, Cesar Pereida GarcÃa,
715 *) Updated CONTRIBUTING
718 *) Updated DRBG / RAND to request nonce and additional low entropy
719 randomness from the system.
720 [Matthias St. Pierre]
722 *) Updated 'openssl rehash' to use OpenSSL consistent default.
725 *) Moved the load of the ssl_conf module to libcrypto, which helps
726 loading engines that libssl uses before libssl is initialised.
729 *) Added EVP_PKEY_sign() and EVP_PKEY_verify() for EdDSA
732 *) Fixed X509_NAME_ENTRY_set to get multi-valued RDNs right in all cases.
733 [Ingo Schwarze, Rich Salz]
735 *) Added output of accepting IP address and port for 'openssl s_server'
738 *) Added a new API for TLSv1.3 ciphersuites:
739 SSL_CTX_set_ciphersuites()
740 SSL_set_ciphersuites()
743 *) Memory allocation failures consistently add an error to the error
747 *) Don't use OPENSSL_ENGINES and OPENSSL_CONF environment values
748 in libcrypto when run as setuid/setgid.
751 *) Load any config file by default when libssl is used.
754 *) Added new public header file <openssl/rand_drbg.h> and documentation
755 for the RAND_DRBG API. See manual page RAND_DRBG(7) for an overview.
756 [Matthias St. Pierre]
758 *) QNX support removed (cannot find contributors to get their approval
759 for the license change).
762 *) TLSv1.3 replay protection for early data has been implemented. See the
763 SSL_read_early_data() man page for further details.
766 *) Separated TLSv1.3 ciphersuite configuration out from TLSv1.2 ciphersuite
767 configuration. TLSv1.3 ciphersuites are not compatible with TLSv1.2 and
768 below. Similarly TLSv1.2 ciphersuites are not compatible with TLSv1.3.
769 In order to avoid issues where legacy TLSv1.2 ciphersuite configuration
770 would otherwise inadvertently disable all TLSv1.3 ciphersuites the
771 configuration has been separated out. See the ciphers man page or the
772 SSL_CTX_set_ciphersuites() man page for more information.
775 *) On POSIX (BSD, Linux, ...) systems the ocsp(1) command running
776 in responder mode now supports the new "-multi" option, which
777 spawns the specified number of child processes to handle OCSP
778 requests. The "-timeout" option now also limits the OCSP
779 responder's patience to wait to receive the full client request
780 on a newly accepted connection. Child processes are respawned
781 as needed, and the CA index file is automatically reloaded
782 when changed. This makes it possible to run the "ocsp" responder
783 as a long-running service, making the OpenSSL CA somewhat more
784 feature-complete. In this mode, most diagnostic messages logged
785 after entering the event loop are logged via syslog(3) rather than
789 *) Added support for X448 and Ed448. Heavily based on original work by
793 *) Extend OSSL_STORE with capabilities to search and to narrow the set of
794 objects loaded. This adds the functions OSSL_STORE_expect() and
795 OSSL_STORE_find() as well as needed tools to construct searches and
796 get the search data out of them.
799 *) Support for TLSv1.3 added. Note that users upgrading from an earlier
800 version of OpenSSL should review their configuration settings to ensure
801 that they are still appropriate for TLSv1.3. For further information see:
802 https://wiki.openssl.org/index.php/TLS1.3
805 *) Grand redesign of the OpenSSL random generator
807 The default RAND method now utilizes an AES-CTR DRBG according to
808 NIST standard SP 800-90Ar1. The new random generator is essentially
809 a port of the default random generator from the OpenSSL FIPS 2.0
810 object module. It is a hybrid deterministic random bit generator
811 using an AES-CTR bit stream and which seeds and reseeds itself
812 automatically using trusted system entropy sources.
814 Some of its new features are:
815 o Support for multiple DRBG instances with seed chaining.
816 o The default RAND method makes use of a DRBG.
817 o There is a public and private DRBG instance.
818 o The DRBG instances are fork-safe.
819 o Keep all global DRBG instances on the secure heap if it is enabled.
820 o The public and private DRBG instance are per thread for lock free
822 [Paul Dale, Benjamin Kaduk, Kurt Roeckx, Rich Salz, Matthias St. Pierre]
824 *) Changed Configure so it only says what it does and doesn't dump
825 so much data. Instead, ./configdata.pm should be used as a script
826 to display all sorts of configuration data.
829 *) Added processing of "make variables" to Configure.
832 *) Added SHA512/224 and SHA512/256 algorithm support.
835 *) The last traces of Netware support, first removed in 1.1.0, have
839 *) Get rid of Makefile.shared, and in the process, make the processing
840 of certain files (rc.obj, or the .def/.map/.opt files produced from
841 the ordinal files) more visible and hopefully easier to trace and
842 debug (or make silent).
845 *) Make it possible to have environment variable assignments as
846 arguments to config / Configure.
849 *) Add multi-prime RSA (RFC 8017) support.
852 *) Add SM3 implemented according to GB/T 32905-2016
853 [ Jack Lloyd <jack.lloyd@ribose.com>,
854 Ronald Tse <ronald.tse@ribose.com>,
855 Erick Borsboom <erick.borsboom@ribose.com> ]
857 *) Add 'Maximum Fragment Length' TLS extension negotiation and support
858 as documented in RFC6066.
859 Based on a patch from Tomasz Moń
860 [Filipe Raimundo da Silva]
862 *) Add SM4 implemented according to GB/T 32907-2016.
863 [ Jack Lloyd <jack.lloyd@ribose.com>,
864 Ronald Tse <ronald.tse@ribose.com>,
865 Erick Borsboom <erick.borsboom@ribose.com> ]
867 *) Reimplement -newreq-nodes and ERR_error_string_n; the
868 original author does not agree with the license change.
871 *) Add ARIA AEAD TLS support.
874 *) Some macro definitions to support VS6 have been removed. Visual
875 Studio 6 has not worked since 1.1.0
878 *) Add ERR_clear_last_mark(), to allow callers to clear the last mark
879 without clearing the errors.
882 *) Add "atfork" functions. If building on a system that without
883 pthreads, see doc/man3/OPENSSL_fork_prepare.pod for application
884 requirements. The RAND facility now uses/requires this.
890 *) The UI API becomes a permanent and integral part of libcrypto, i.e.
891 not possible to disable entirely. However, it's still possible to
892 disable the console reading UI method, UI_OpenSSL() (use UI_null()
895 To disable, configure with 'no-ui-console'. 'no-ui' is still
896 possible to use as an alias. Check at compile time with the
897 macro OPENSSL_NO_UI_CONSOLE. The macro OPENSSL_NO_UI is still
898 possible to check and is an alias for OPENSSL_NO_UI_CONSOLE.
901 *) Add a STORE module, which implements a uniform and URI based reader of
902 stores that can contain keys, certificates, CRLs and numerous other
903 objects. The main API is loosely based on a few stdio functions,
904 and includes OSSL_STORE_open, OSSL_STORE_load, OSSL_STORE_eof,
905 OSSL_STORE_error and OSSL_STORE_close.
906 The implementation uses backends called "loaders" to implement arbitrary
907 URI schemes. There is one built in "loader" for the 'file' scheme.
910 *) Add devcrypto engine. This has been implemented against cryptodev-linux,
911 then adjusted to work on FreeBSD 8.4 as well.
912 Enable by configuring with 'enable-devcryptoeng'. This is done by default
913 on BSD implementations, as cryptodev.h is assumed to exist on all of them.
916 *) Module names can prefixed with OSSL_ or OPENSSL_. This affects
917 util/mkerr.pl, which is adapted to allow those prefixes, leading to
918 error code calls like this:
920 OSSL_FOOerr(OSSL_FOO_F_SOMETHING, OSSL_FOO_R_WHATEVER);
922 With this change, we claim the namespaces OSSL and OPENSSL in a manner
923 that can be encoded in C. For the foreseeable future, this will only
925 [Richard Levitte and Tim Hudson]
927 *) Removed BSD cryptodev engine.
930 *) Add a build target 'build_all_generated', to build all generated files
931 and only that. This can be used to prepare everything that requires
932 things like perl for a system that lacks perl and then move everything
933 to that system and do the rest of the build there.
936 *) In the UI interface, make it possible to duplicate the user data. This
937 can be used by engines that need to retain the data for a longer time
938 than just the call where this user data is passed.
941 *) Ignore the '-named_curve auto' value for compatibility of applications
943 [Tomas Mraz <tmraz@fedoraproject.org>]
945 *) Fragmented SSL/TLS alerts are no longer accepted. An alert message is 2
946 bytes long. In theory it is permissible in SSLv3 - TLSv1.2 to fragment such
947 alerts across multiple records (some of which could be empty). In practice
948 it make no sense to send an empty alert record, or to fragment one. TLSv1.3
949 prohibts this altogether and other libraries (BoringSSL, NSS) do not
950 support this at all. Supporting it adds significant complexity to the
951 record layer, and its removal is unlikely to cause inter-operability
955 *) Add the ASN.1 types INT32, UINT32, INT64, UINT64 and variants prefixed
956 with Z. These are meant to replace LONG and ZLONG and to be size safe.
957 The use of LONG and ZLONG is discouraged and scheduled for deprecation
961 *) Add the 'z' and 'j' modifiers to BIO_printf() et al formatting string,
962 'z' is to be used for [s]size_t, and 'j' - with [u]int64_t.
963 [Richard Levitte, Andy Polyakov]
965 *) Add EC_KEY_get0_engine(), which does for EC_KEY what RSA_get0_engine()
969 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
970 platform rather than 'mingw'.
973 *) The functions X509_STORE_add_cert and X509_STORE_add_crl return
974 success if they are asked to add an object which already exists
975 in the store. This change cascades to other functions which load
976 certificates and CRLs.
979 *) x86_64 assembly pack: annotate code with DWARF CFI directives to
980 facilitate stack unwinding even from assembly subroutines.
983 *) Remove VAX C specific definitions of OPENSSL_EXPORT, OPENSSL_EXTERN.
984 Also remove OPENSSL_GLOBAL entirely, as it became a no-op.
987 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
988 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
989 which is the minimum version we support.
992 *) Certificate time validation (X509_cmp_time) enforces stricter
993 compliance with RFC 5280. Fractional seconds and timezone offsets
994 are no longer allowed.
997 *) Add support for ARIA
1000 *) s_client will now send the Server Name Indication (SNI) extension by
1001 default unless the new "-noservername" option is used. The server name is
1002 based on the host provided to the "-connect" option unless overridden by
1003 using "-servername".
1006 *) Add support for SipHash
1009 *) OpenSSL now fails if it receives an unrecognised record type in TLS1.0
1010 or TLS1.1. Previously this only happened in SSLv3 and TLS1.2. This is to
1011 prevent issues where no progress is being made and the peer continually
1012 sends unrecognised record types, using up resources processing them.
1015 *) 'openssl passwd' can now produce SHA256 and SHA512 based output,
1016 using the algorithm defined in
1017 https://www.akkadia.org/drepper/SHA-crypt.txt
1020 *) Heartbeat support has been removed; the ABI is changed for now.
1021 [Richard Levitte, Rich Salz]
1023 *) Support for SSL_OP_NO_ENCRYPT_THEN_MAC in SSL_CONF_cmd.
1026 *) The RSA "null" method, which was partially supported to avoid patent
1027 issues, has been replaced to always returns NULL.
1031 Changes between 1.1.0h and 1.1.0i [xx XXX xxxx]
1033 *) Client DoS due to large DH parameter
1035 During key agreement in a TLS handshake using a DH(E) based ciphersuite a
1036 malicious server can send a very large prime value to the client. This will
1037 cause the client to spend an unreasonably long period of time generating a
1038 key for this prime resulting in a hang until the client has finished. This
1039 could be exploited in a Denial Of Service attack.
1041 This issue was reported to OpenSSL on 5th June 2018 by Guido Vranken
1045 *) Cache timing vulnerability in RSA Key Generation
1047 The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to
1048 a cache timing side channel attack. An attacker with sufficient access to
1049 mount cache timing attacks during the RSA key generation process could
1050 recover the private key.
1052 This issue was reported to OpenSSL on 4th April 2018 by Alejandro Cabrera
1053 Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia.
1057 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
1058 parameter is no longer accepted, as it leads to a corrupt table. NULL
1059 pem_str is reserved for alias entries only.
1062 *) Revert blinding in ECDSA sign and instead make problematic addition
1063 length-invariant. Switch even to fixed-length Montgomery multiplication.
1066 *) Change generating and checking of primes so that the error rate of not
1067 being prime depends on the intended use based on the size of the input.
1068 For larger primes this will result in more rounds of Miller-Rabin.
1069 The maximal error rate for primes with more than 1080 bits is lowered
1071 [Kurt Roeckx, Annie Yousar]
1073 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64.
1076 *) Add blinding to ECDSA and DSA signatures to protect against side channel
1077 attacks discovered by Keegan Ryan (NCC Group).
1080 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
1081 now allow empty (zero character) pass phrases.
1084 *) Certificate time validation (X509_cmp_time) enforces stricter
1085 compliance with RFC 5280. Fractional seconds and timezone offsets
1086 are no longer allowed.
1089 *) Fixed a text canonicalisation bug in CMS
1091 Where a CMS detached signature is used with text content the text goes
1092 through a canonicalisation process first prior to signing or verifying a
1093 signature. This process strips trailing space at the end of lines, converts
1094 line terminators to CRLF and removes additional trailing line terminators
1095 at the end of a file. A bug in the canonicalisation process meant that
1096 some characters, such as form-feed, were incorrectly treated as whitespace
1097 and removed. This is contrary to the specification (RFC5485). This fix
1098 could mean that detached text data signed with an earlier version of
1099 OpenSSL 1.1.0 may fail to verify using the fixed version, or text data
1100 signed with a fixed OpenSSL may fail to verify with an earlier version of
1101 OpenSSL 1.1.0. A workaround is to only verify the canonicalised text data
1102 and use the "-binary" flag (for the "cms" command line application) or set
1103 the SMIME_BINARY/PKCS7_BINARY/CMS_BINARY flags (if using CMS_verify()).
1106 Changes between 1.1.0g and 1.1.0h [27 Mar 2018]
1108 *) Constructed ASN.1 types with a recursive definition could exceed the stack
1110 Constructed ASN.1 types with a recursive definition (such as can be found
1111 in PKCS7) could eventually exceed the stack given malicious input with
1112 excessive recursion. This could result in a Denial Of Service attack. There
1113 are no such structures used within SSL/TLS that come from untrusted sources
1114 so this is considered safe.
1116 This issue was reported to OpenSSL on 4th January 2018 by the OSS-fuzz
1121 *) Incorrect CRYPTO_memcmp on HP-UX PA-RISC
1123 Because of an implementation bug the PA-RISC CRYPTO_memcmp function is
1124 effectively reduced to only comparing the least significant bit of each
1125 byte. This allows an attacker to forge messages that would be considered as
1126 authenticated in an amount of tries lower than that guaranteed by the
1127 security claims of the scheme. The module can only be compiled by the
1128 HP-UX assembler, so that only HP-UX PA-RISC targets are affected.
1130 This issue was reported to OpenSSL on 2nd March 2018 by Peter Waltenberg
1135 *) Add a build target 'build_all_generated', to build all generated files
1136 and only that. This can be used to prepare everything that requires
1137 things like perl for a system that lacks perl and then move everything
1138 to that system and do the rest of the build there.
1141 *) Backport SSL_OP_NO_RENGOTIATION
1143 OpenSSL 1.0.2 and below had the ability to disable renegotiation using the
1144 (undocumented) SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS flag. Due to the opacity
1145 changes this is no longer possible in 1.1.0. Therefore the new
1146 SSL_OP_NO_RENEGOTIATION option from 1.1.1-dev has been backported to
1147 1.1.0 to provide equivalent functionality.
1149 Note that if an application built against 1.1.0h headers (or above) is run
1150 using an older version of 1.1.0 (prior to 1.1.0h) then the option will be
1151 accepted but nothing will happen, i.e. renegotiation will not be prevented.
1154 *) Removed the OS390-Unix config target. It relied on a script that doesn't
1158 *) rsaz_1024_mul_avx2 overflow bug on x86_64
1160 There is an overflow bug in the AVX2 Montgomery multiplication procedure
1161 used in exponentiation with 1024-bit moduli. No EC algorithms are affected.
1162 Analysis suggests that attacks against RSA and DSA as a result of this
1163 defect would be very difficult to perform and are not believed likely.
1164 Attacks against DH1024 are considered just feasible, because most of the
1165 work necessary to deduce information about a private key may be performed
1166 offline. The amount of resources required for such an attack would be
1167 significant. However, for an attack on TLS to be meaningful, the server
1168 would have to share the DH1024 private key among multiple clients, which is
1169 no longer an option since CVE-2016-0701.
1171 This only affects processors that support the AVX2 but not ADX extensions
1172 like Intel Haswell (4th generation).
1174 This issue was reported to OpenSSL by David Benjamin (Google). The issue
1175 was originally found via the OSS-Fuzz project.
1179 Changes between 1.1.0f and 1.1.0g [2 Nov 2017]
1181 *) bn_sqrx8x_internal carry bug on x86_64
1183 There is a carry propagating bug in the x86_64 Montgomery squaring
1184 procedure. No EC algorithms are affected. Analysis suggests that attacks
1185 against RSA and DSA as a result of this defect would be very difficult to
1186 perform and are not believed likely. Attacks against DH are considered just
1187 feasible (although very difficult) because most of the work necessary to
1188 deduce information about a private key may be performed offline. The amount
1189 of resources required for such an attack would be very significant and
1190 likely only accessible to a limited number of attackers. An attacker would
1191 additionally need online access to an unpatched system using the target
1192 private key in a scenario with persistent DH parameters and a private
1193 key that is shared between multiple clients.
1195 This only affects processors that support the BMI1, BMI2 and ADX extensions
1196 like Intel Broadwell (5th generation) and later or AMD Ryzen.
1198 This issue was reported to OpenSSL by the OSS-Fuzz project.
1202 *) Malformed X.509 IPAddressFamily could cause OOB read
1204 If an X.509 certificate has a malformed IPAddressFamily extension,
1205 OpenSSL could do a one-byte buffer overread. The most likely result
1206 would be an erroneous display of the certificate in text format.
1208 This issue was reported to OpenSSL by the OSS-Fuzz project.
1212 Changes between 1.1.0e and 1.1.0f [25 May 2017]
1214 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
1215 platform rather than 'mingw'.
1218 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
1219 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
1220 which is the minimum version we support.
1223 Changes between 1.1.0d and 1.1.0e [16 Feb 2017]
1225 *) Encrypt-Then-Mac renegotiation crash
1227 During a renegotiation handshake if the Encrypt-Then-Mac extension is
1228 negotiated where it was not in the original handshake (or vice-versa) then
1229 this can cause OpenSSL to crash (dependant on ciphersuite). Both clients
1230 and servers are affected.
1232 This issue was reported to OpenSSL by Joe Orton (Red Hat).
1236 Changes between 1.1.0c and 1.1.0d [26 Jan 2017]
1238 *) Truncated packet could crash via OOB read
1240 If one side of an SSL/TLS path is running on a 32-bit host and a specific
1241 cipher is being used, then a truncated packet can cause that host to
1242 perform an out-of-bounds read, usually resulting in a crash.
1244 This issue was reported to OpenSSL by Robert Święcki of Google.
1248 *) Bad (EC)DHE parameters cause a client crash
1250 If a malicious server supplies bad parameters for a DHE or ECDHE key
1251 exchange then this can result in the client attempting to dereference a
1252 NULL pointer leading to a client crash. This could be exploited in a Denial
1255 This issue was reported to OpenSSL by Guido Vranken.
1259 *) BN_mod_exp may produce incorrect results on x86_64
1261 There is a carry propagating bug in the x86_64 Montgomery squaring
1262 procedure. No EC algorithms are affected. Analysis suggests that attacks
1263 against RSA and DSA as a result of this defect would be very difficult to
1264 perform and are not believed likely. Attacks against DH are considered just
1265 feasible (although very difficult) because most of the work necessary to
1266 deduce information about a private key may be performed offline. The amount
1267 of resources required for such an attack would be very significant and
1268 likely only accessible to a limited number of attackers. An attacker would
1269 additionally need online access to an unpatched system using the target
1270 private key in a scenario with persistent DH parameters and a private
1271 key that is shared between multiple clients. For example this can occur by
1272 default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very
1273 similar to CVE-2015-3193 but must be treated as a separate problem.
1275 This issue was reported to OpenSSL by the OSS-Fuzz project.
1279 Changes between 1.1.0b and 1.1.0c [10 Nov 2016]
1281 *) ChaCha20/Poly1305 heap-buffer-overflow
1283 TLS connections using *-CHACHA20-POLY1305 ciphersuites are susceptible to
1284 a DoS attack by corrupting larger payloads. This can result in an OpenSSL
1285 crash. This issue is not considered to be exploitable beyond a DoS.
1287 This issue was reported to OpenSSL by Robert Święcki (Google Security Team)
1291 *) CMS Null dereference
1293 Applications parsing invalid CMS structures can crash with a NULL pointer
1294 dereference. This is caused by a bug in the handling of the ASN.1 CHOICE
1295 type in OpenSSL 1.1.0 which can result in a NULL value being passed to the
1296 structure callback if an attempt is made to free certain invalid encodings.
1297 Only CHOICE structures using a callback which do not handle NULL value are
1300 This issue was reported to OpenSSL by Tyler Nighswander of ForAllSecure.
1304 *) Montgomery multiplication may produce incorrect results
1306 There is a carry propagating bug in the Broadwell-specific Montgomery
1307 multiplication procedure that handles input lengths divisible by, but
1308 longer than 256 bits. Analysis suggests that attacks against RSA, DSA
1309 and DH private keys are impossible. This is because the subroutine in
1310 question is not used in operations with the private key itself and an input
1311 of the attacker's direct choice. Otherwise the bug can manifest itself as
1312 transient authentication and key negotiation failures or reproducible
1313 erroneous outcome of public-key operations with specially crafted input.
1314 Among EC algorithms only Brainpool P-512 curves are affected and one
1315 presumably can attack ECDH key negotiation. Impact was not analyzed in
1316 detail, because pre-requisites for attack are considered unlikely. Namely
1317 multiple clients have to choose the curve in question and the server has to
1318 share the private key among them, neither of which is default behaviour.
1319 Even then only clients that chose the curve will be affected.
1321 This issue was publicly reported as transient failures and was not
1322 initially recognized as a security issue. Thanks to Richard Morgan for
1323 providing reproducible case.
1327 *) Removed automatic addition of RPATH in shared libraries and executables,
1328 as this was a remainder from OpenSSL 1.0.x and isn't needed any more.
1331 Changes between 1.1.0a and 1.1.0b [26 Sep 2016]
1333 *) Fix Use After Free for large message sizes
1335 The patch applied to address CVE-2016-6307 resulted in an issue where if a
1336 message larger than approx 16k is received then the underlying buffer to
1337 store the incoming message is reallocated and moved. Unfortunately a
1338 dangling pointer to the old location is left which results in an attempt to
1339 write to the previously freed location. This is likely to result in a
1340 crash, however it could potentially lead to execution of arbitrary code.
1342 This issue only affects OpenSSL 1.1.0a.
1344 This issue was reported to OpenSSL by Robert Święcki.
1348 Changes between 1.1.0 and 1.1.0a [22 Sep 2016]
1350 *) OCSP Status Request extension unbounded memory growth
1352 A malicious client can send an excessively large OCSP Status Request
1353 extension. If that client continually requests renegotiation, sending a
1354 large OCSP Status Request extension each time, then there will be unbounded
1355 memory growth on the server. This will eventually lead to a Denial Of
1356 Service attack through memory exhaustion. Servers with a default
1357 configuration are vulnerable even if they do not support OCSP. Builds using
1358 the "no-ocsp" build time option are not affected.
1360 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
1364 *) SSL_peek() hang on empty record
1366 OpenSSL 1.1.0 SSL/TLS will hang during a call to SSL_peek() if the peer
1367 sends an empty record. This could be exploited by a malicious peer in a
1368 Denial Of Service attack.
1370 This issue was reported to OpenSSL by Alex Gaynor.
1374 *) Excessive allocation of memory in tls_get_message_header() and
1375 dtls1_preprocess_fragment()
1377 A (D)TLS message includes 3 bytes for its length in the header for the
1378 message. This would allow for messages up to 16Mb in length. Messages of
1379 this length are excessive and OpenSSL includes a check to ensure that a
1380 peer is sending reasonably sized messages in order to avoid too much memory
1381 being consumed to service a connection. A flaw in the logic of version
1382 1.1.0 means that memory for the message is allocated too early, prior to
1383 the excessive message length check. Due to way memory is allocated in
1384 OpenSSL this could mean an attacker could force up to 21Mb to be allocated
1385 to service a connection. This could lead to a Denial of Service through
1386 memory exhaustion. However, the excessive message length check still takes
1387 place, and this would cause the connection to immediately fail. Assuming
1388 that the application calls SSL_free() on the failed connection in a timely
1389 manner then the 21Mb of allocated memory will then be immediately freed
1390 again. Therefore the excessive memory allocation will be transitory in
1391 nature. This then means that there is only a security impact if:
1393 1) The application does not call SSL_free() in a timely manner in the event
1394 that the connection fails
1396 2) The application is working in a constrained environment where there is
1397 very little free memory
1399 3) The attacker initiates multiple connection attempts such that there are
1400 multiple connections in a state where memory has been allocated for the
1401 connection; SSL_free() has not yet been called; and there is insufficient
1402 memory to service the multiple requests.
1404 Except in the instance of (1) above any Denial Of Service is likely to be
1405 transitory because as soon as the connection fails the memory is
1406 subsequently freed again in the SSL_free() call. However there is an
1407 increased risk during this period of application crashes due to the lack of
1408 memory - which would then mean a more serious Denial of Service.
1410 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
1411 (CVE-2016-6307 and CVE-2016-6308)
1414 *) solaris-x86-cc, i.e. 32-bit configuration with vendor compiler,
1415 had to be removed. Primary reason is that vendor assembler can't
1416 assemble our modules with -KPIC flag. As result it, assembly
1417 support, was not even available as option. But its lack means
1418 lack of side-channel resistant code, which is incompatible with
1419 security by todays standards. Fortunately gcc is readily available
1420 prepackaged option, which we firmly point at...
1423 Changes between 1.0.2h and 1.1.0 [25 Aug 2016]
1425 *) Windows command-line tool supports UTF-8 opt-in option for arguments
1426 and console input. Setting OPENSSL_WIN32_UTF8 environment variable
1427 (to any value) allows Windows user to access PKCS#12 file generated
1428 with Windows CryptoAPI and protected with non-ASCII password, as well
1429 as files generated under UTF-8 locale on Linux also protected with
1433 *) To mitigate the SWEET32 attack (CVE-2016-2183), 3DES cipher suites
1434 have been disabled by default and removed from DEFAULT, just like RC4.
1435 See the RC4 item below to re-enable both.
1438 *) The method for finding the storage location for the Windows RAND seed file
1439 has changed. First we check %RANDFILE%. If that is not set then we check
1440 the directories %HOME%, %USERPROFILE% and %SYSTEMROOT% in that order. If
1441 all else fails we fall back to C:\.
1444 *) The EVP_EncryptUpdate() function has had its return type changed from void
1445 to int. A return of 0 indicates and error while a return of 1 indicates
1449 *) The flags RSA_FLAG_NO_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME and
1450 DH_FLAG_NO_EXP_CONSTTIME which previously provided the ability to switch
1451 off the constant time implementation for RSA, DSA and DH have been made
1452 no-ops and deprecated.
1455 *) Windows RAND implementation was simplified to only get entropy by
1456 calling CryptGenRandom(). Various other RAND-related tickets
1458 [Joseph Wylie Yandle, Rich Salz]
1460 *) The stack and lhash API's were renamed to start with OPENSSL_SK_
1461 and OPENSSL_LH_, respectively. The old names are available
1462 with API compatibility. They new names are now completely documented.
1465 *) Unify TYPE_up_ref(obj) methods signature.
1466 SSL_CTX_up_ref(), SSL_up_ref(), X509_up_ref(), EVP_PKEY_up_ref(),
1467 X509_CRL_up_ref(), X509_OBJECT_up_ref_count() methods are now returning an
1468 int (instead of void) like all others TYPE_up_ref() methods.
1469 So now these methods also check the return value of CRYPTO_atomic_add(),
1470 and the validity of object reference counter.
1471 [fdasilvayy@gmail.com]
1473 *) With Windows Visual Studio builds, the .pdb files are installed
1474 alongside the installed libraries and executables. For a static
1475 library installation, ossl_static.pdb is the associate compiler
1476 generated .pdb file to be used when linking programs.
1479 *) Remove openssl.spec. Packaging files belong with the packagers.
1482 *) Automatic Darwin/OSX configuration has had a refresh, it will now
1483 recognise x86_64 architectures automatically. You can still decide
1484 to build for a different bitness with the environment variable
1485 KERNEL_BITS (can be 32 or 64), for example:
1487 KERNEL_BITS=32 ./config
1491 *) Change default algorithms in pkcs8 utility to use PKCS#5 v2.0,
1492 256 bit AES and HMAC with SHA256.
1495 *) Remove support for MIPS o32 ABI on IRIX (and IRIX only).
1498 *) Triple-DES ciphers have been moved from HIGH to MEDIUM.
1501 *) To enable users to have their own config files and build file templates,
1502 Configure looks in the directory indicated by the environment variable
1503 OPENSSL_LOCAL_CONFIG_DIR as well as the in-source Configurations/
1504 directory. On VMS, OPENSSL_LOCAL_CONFIG_DIR is expected to be a logical
1505 name and is used as is.
1508 *) The following datatypes were made opaque: X509_OBJECT, X509_STORE_CTX,
1509 X509_STORE, X509_LOOKUP, and X509_LOOKUP_METHOD. The unused type
1510 X509_CERT_FILE_CTX was removed.
1513 *) "shared" builds are now the default. To create only static libraries use
1514 the "no-shared" Configure option.
1517 *) Remove the no-aes, no-hmac, no-rsa, no-sha and no-md5 Configure options.
1518 All of these option have not worked for some while and are fundamental
1522 *) Make various cleanup routines no-ops and mark them as deprecated. Most
1523 global cleanup functions are no longer required because they are handled
1524 via auto-deinit (see OPENSSL_init_crypto and OPENSSL_init_ssl man pages).
1525 Explicitly de-initing can cause problems (e.g. where a library that uses
1526 OpenSSL de-inits, but an application is still using it). The affected
1527 functions are CONF_modules_free(), ENGINE_cleanup(), OBJ_cleanup(),
1528 EVP_cleanup(), BIO_sock_cleanup(), CRYPTO_cleanup_all_ex_data(),
1529 RAND_cleanup(), SSL_COMP_free_compression_methods(), ERR_free_strings() and
1530 COMP_zlib_cleanup().
1533 *) --strict-warnings no longer enables runtime debugging options
1534 such as REF_DEBUG. Instead, debug options are automatically
1535 enabled with '--debug' builds.
1536 [Andy Polyakov, Emilia Käsper]
1538 *) Made DH and DH_METHOD opaque. The structures for managing DH objects
1539 have been moved out of the public header files. New functions for managing
1540 these have been added.
1543 *) Made RSA and RSA_METHOD opaque. The structures for managing RSA
1544 objects have been moved out of the public header files. New
1545 functions for managing these have been added.
1548 *) Made DSA and DSA_METHOD opaque. The structures for managing DSA objects
1549 have been moved out of the public header files. New functions for managing
1550 these have been added.
1553 *) Made BIO and BIO_METHOD opaque. The structures for managing BIOs have been
1554 moved out of the public header files. New functions for managing these
1558 *) Removed no-rijndael as a config option. Rijndael is an old name for AES.
1561 *) Removed the mk1mf build scripts.
1564 *) Headers are now wrapped, if necessary, with OPENSSL_NO_xxx, so
1565 it is always safe to #include a header now.
1568 *) Removed the aged BC-32 config and all its supporting scripts
1571 *) Removed support for Ultrix, Netware, and OS/2.
1574 *) Add support for HKDF.
1575 [Alessandro Ghedini]
1577 *) Add support for blake2b and blake2s
1580 *) Added support for "pipelining". Ciphers that have the
1581 EVP_CIPH_FLAG_PIPELINE flag set have a capability to process multiple
1582 encryptions/decryptions simultaneously. There are currently no built-in
1583 ciphers with this property but the expectation is that engines will be able
1584 to offer it to significantly improve throughput. Support has been extended
1585 into libssl so that multiple records for a single connection can be
1586 processed in one go (for >=TLS 1.1).
1589 *) Added the AFALG engine. This is an async capable engine which is able to
1590 offload work to the Linux kernel. In this initial version it only supports
1591 AES128-CBC. The kernel must be version 4.1.0 or greater.
1594 *) OpenSSL now uses a new threading API. It is no longer necessary to
1595 set locking callbacks to use OpenSSL in a multi-threaded environment. There
1596 are two supported threading models: pthreads and windows threads. It is
1597 also possible to configure OpenSSL at compile time for "no-threads". The
1598 old threading API should no longer be used. The functions have been
1599 replaced with "no-op" compatibility macros.
1600 [Alessandro Ghedini, Matt Caswell]
1602 *) Modify behavior of ALPN to invoke callback after SNI/servername
1603 callback, such that updates to the SSL_CTX affect ALPN.
1606 *) Add SSL_CIPHER queries for authentication and key-exchange.
1609 *) Changes to the DEFAULT cipherlist:
1610 - Prefer (EC)DHE handshakes over plain RSA.
1611 - Prefer AEAD ciphers over legacy ciphers.
1612 - Prefer ECDSA over RSA when both certificates are available.
1613 - Prefer TLSv1.2 ciphers/PRF.
1614 - Remove DSS, SEED, IDEA, CAMELLIA, and AES-CCM from the
1618 *) Change the ECC default curve list to be this, in order: x25519,
1619 secp256r1, secp521r1, secp384r1.
1622 *) RC4 based libssl ciphersuites are now classed as "weak" ciphers and are
1623 disabled by default. They can be re-enabled using the
1624 enable-weak-ssl-ciphers option to Configure.
1627 *) If the server has ALPN configured, but supports no protocols that the
1628 client advertises, send a fatal "no_application_protocol" alert.
1629 This behaviour is SHALL in RFC 7301, though it isn't universally
1630 implemented by other servers.
1633 *) Add X25519 support.
1634 Add ASN.1 and EVP_PKEY methods for X25519. This includes support
1635 for public and private key encoding using the format documented in
1636 draft-ietf-curdle-pkix-02. The corresponding EVP_PKEY method supports
1637 key generation and key derivation.
1639 TLS support complies with draft-ietf-tls-rfc4492bis-08 and uses
1643 *) Deprecate SRP_VBASE_get_by_user.
1644 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
1645 In order to fix an unavoidable memory leak (CVE-2016-0798),
1646 SRP_VBASE_get_by_user was changed to ignore the "fake user" SRP
1647 seed, even if the seed is configured.
1649 Users should use SRP_VBASE_get1_by_user instead. Note that in
1650 SRP_VBASE_get1_by_user, caller must free the returned value. Note
1651 also that even though configuring the SRP seed attempts to hide
1652 invalid usernames by continuing the handshake with fake
1653 credentials, this behaviour is not constant time and no strong
1654 guarantees are made that the handshake is indistinguishable from
1655 that of a valid user.
1658 *) Configuration change; it's now possible to build dynamic engines
1659 without having to build shared libraries and vice versa. This
1660 only applies to the engines in engines/, those in crypto/engine/
1661 will always be built into libcrypto (i.e. "static").
1663 Building dynamic engines is enabled by default; to disable, use
1664 the configuration option "disable-dynamic-engine".
1666 The only requirements for building dynamic engines are the
1667 presence of the DSO module and building with position independent
1668 code, so they will also automatically be disabled if configuring
1669 with "disable-dso" or "disable-pic".
1671 The macros OPENSSL_NO_STATIC_ENGINE and OPENSSL_NO_DYNAMIC_ENGINE
1672 are also taken away from openssl/opensslconf.h, as they are
1676 *) Configuration change; if there is a known flag to compile
1677 position independent code, it will always be applied on the
1678 libcrypto and libssl object files, and never on the application
1679 object files. This means other libraries that use routines from
1680 libcrypto / libssl can be made into shared libraries regardless
1681 of how OpenSSL was configured.
1683 If this isn't desirable, the configuration options "disable-pic"
1684 or "no-pic" can be used to disable the use of PIC. This will
1685 also disable building shared libraries and dynamic engines.
1688 *) Removed JPAKE code. It was experimental and has no wide use.
1691 *) The INSTALL_PREFIX Makefile variable has been renamed to
1692 DESTDIR. That makes for less confusion on what this variable
1693 is for. Also, the configuration option --install_prefix is
1697 *) Heartbeat for TLS has been removed and is disabled by default
1698 for DTLS; configure with enable-heartbeats. Code that uses the
1699 old #define's might need to be updated.
1700 [Emilia Käsper, Rich Salz]
1702 *) Rename REF_CHECK to REF_DEBUG.
1705 *) New "unified" build system
1707 The "unified" build system is aimed to be a common system for all
1708 platforms we support. With it comes new support for VMS.
1710 This system builds supports building in a different directory tree
1711 than the source tree. It produces one Makefile (for unix family
1712 or lookalikes), or one descrip.mms (for VMS).
1714 The source of information to make the Makefile / descrip.mms is
1715 small files called 'build.info', holding the necessary
1716 information for each directory with source to compile, and a
1717 template in Configurations, like unix-Makefile.tmpl or
1720 With this change, the library names were also renamed on Windows
1721 and on VMS. They now have names that are closer to the standard
1722 on Unix, and include the major version number, and in certain
1723 cases, the architecture they are built for. See "Notes on shared
1724 libraries" in INSTALL.
1726 We rely heavily on the perl module Text::Template.
1729 *) Added support for auto-initialisation and de-initialisation of the library.
1730 OpenSSL no longer requires explicit init or deinit routines to be called,
1731 except in certain circumstances. See the OPENSSL_init_crypto() and
1732 OPENSSL_init_ssl() man pages for further information.
1735 *) The arguments to the DTLSv1_listen function have changed. Specifically the
1736 "peer" argument is now expected to be a BIO_ADDR object.
1738 *) Rewrite of BIO networking library. The BIO library lacked consistent
1739 support of IPv6, and adding it required some more extensive
1740 modifications. This introduces the BIO_ADDR and BIO_ADDRINFO types,
1741 which hold all types of addresses and chains of address information.
1742 It also introduces a new API, with functions like BIO_socket,
1743 BIO_connect, BIO_listen, BIO_lookup and a rewrite of BIO_accept.
1744 The source/sink BIOs BIO_s_connect, BIO_s_accept and BIO_s_datagram
1745 have been adapted accordingly.
1748 *) RSA_padding_check_PKCS1_type_1 now accepts inputs with and without
1752 *) CRIME protection: disable compression by default, even if OpenSSL is
1753 compiled with zlib enabled. Applications can still enable compression
1754 by calling SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION), or by
1755 using the SSL_CONF library to configure compression.
1758 *) The signature of the session callback configured with
1759 SSL_CTX_sess_set_get_cb was changed. The read-only input buffer
1760 was explicitly marked as 'const unsigned char*' instead of
1764 *) Always DPURIFY. Remove the use of uninitialized memory in the
1765 RNG, and other conditional uses of DPURIFY. This makes -DPURIFY a no-op.
1768 *) Removed many obsolete configuration items, including
1769 DES_PTR, DES_RISC1, DES_RISC2, DES_INT
1770 MD2_CHAR, MD2_INT, MD2_LONG
1772 IDEA_SHORT, IDEA_LONG
1773 RC2_SHORT, RC2_LONG, RC4_LONG, RC4_CHUNK, RC4_INDEX
1774 [Rich Salz, with advice from Andy Polyakov]
1776 *) Many BN internals have been moved to an internal header file.
1777 [Rich Salz with help from Andy Polyakov]
1779 *) Configuration and writing out the results from it has changed.
1780 Files such as Makefile include/openssl/opensslconf.h and are now
1781 produced through general templates, such as Makefile.in and
1782 crypto/opensslconf.h.in and some help from the perl module
1785 Also, the center of configuration information is no longer
1786 Makefile. Instead, Configure produces a perl module in
1787 configdata.pm which holds most of the config data (in the hash
1788 table %config), the target data that comes from the target
1789 configuration in one of the Configurations/*.conf files (in
1793 *) To clarify their intended purposes, the Configure options
1794 --prefix and --openssldir change their semantics, and become more
1795 straightforward and less interdependent.
1797 --prefix shall be used exclusively to give the location INSTALLTOP
1798 where programs, scripts, libraries, include files and manuals are
1799 going to be installed. The default is now /usr/local.
1801 --openssldir shall be used exclusively to give the default
1802 location OPENSSLDIR where certificates, private keys, CRLs are
1803 managed. This is also where the default openssl.cnf gets
1805 If the directory given with this option is a relative path, the
1806 values of both the --prefix value and the --openssldir value will
1807 be combined to become OPENSSLDIR.
1808 The default for --openssldir is INSTALLTOP/ssl.
1810 Anyone who uses --openssldir to specify where OpenSSL is to be
1811 installed MUST change to use --prefix instead.
1814 *) The GOST engine was out of date and therefore it has been removed. An up
1815 to date GOST engine is now being maintained in an external repository.
1816 See: https://wiki.openssl.org/index.php/Binaries. Libssl still retains
1817 support for GOST ciphersuites (these are only activated if a GOST engine
1821 *) EGD is no longer supported by default; use enable-egd when
1823 [Ben Kaduk and Rich Salz]
1825 *) The distribution now has Makefile.in files, which are used to
1826 create Makefile's when Configure is run. *Configure must be run
1827 before trying to build now.*
1830 *) The return value for SSL_CIPHER_description() for error conditions
1834 *) Support for RFC6698/RFC7671 DANE TLSA peer authentication.
1836 Obtaining and performing DNSSEC validation of TLSA records is
1837 the application's responsibility. The application provides
1838 the TLSA records of its choice to OpenSSL, and these are then
1839 used to authenticate the peer.
1841 The TLSA records need not even come from DNS. They can, for
1842 example, be used to implement local end-entity certificate or
1843 trust-anchor "pinning", where the "pin" data takes the form
1844 of TLSA records, which can augment or replace verification
1845 based on the usual WebPKI public certification authorities.
1848 *) Revert default OPENSSL_NO_DEPRECATED setting. Instead OpenSSL
1849 continues to support deprecated interfaces in default builds.
1850 However, applications are strongly advised to compile their
1851 source files with -DOPENSSL_API_COMPAT=0x10100000L, which hides
1852 the declarations of all interfaces deprecated in 0.9.8, 1.0.0
1853 or the 1.1.0 releases.
1855 In environments in which all applications have been ported to
1856 not use any deprecated interfaces OpenSSL's Configure script
1857 should be used with the --api=1.1.0 option to entirely remove
1858 support for the deprecated features from the library and
1859 unconditionally disable them in the installed headers.
1860 Essentially the same effect can be achieved with the "no-deprecated"
1861 argument to Configure, except that this will always restrict
1862 the build to just the latest API, rather than a fixed API
1865 As applications are ported to future revisions of the API,
1866 they should update their compile-time OPENSSL_API_COMPAT define
1867 accordingly, but in most cases should be able to continue to
1868 compile with later releases.
1870 The OPENSSL_API_COMPAT versions for 1.0.0, and 0.9.8 are
1871 0x10000000L and 0x00908000L, respectively. However those
1872 versions did not support the OPENSSL_API_COMPAT feature, and
1873 so applications are not typically tested for explicit support
1874 of just the undeprecated features of either release.
1877 *) Add support for setting the minimum and maximum supported protocol.
1878 It can bet set via the SSL_set_min_proto_version() and
1879 SSL_set_max_proto_version(), or via the SSL_CONF's MinProtocol and
1880 MaxProtocol. It's recommended to use the new APIs to disable
1881 protocols instead of disabling individual protocols using
1882 SSL_set_options() or SSL_CONF's Protocol. This change also
1883 removes support for disabling TLS 1.2 in the OpenSSL TLS
1884 client at compile time by defining OPENSSL_NO_TLS1_2_CLIENT.
1887 *) Support for ChaCha20 and Poly1305 added to libcrypto and libssl.
1890 *) New EC_KEY_METHOD, this replaces the older ECDSA_METHOD and ECDH_METHOD
1891 and integrates ECDSA and ECDH functionality into EC. Implementations can
1892 now redirect key generation and no longer need to convert to or from
1895 Note: the ecdsa.h and ecdh.h headers are now no longer needed and just
1896 include the ec.h header file instead.
1899 *) Remove support for all 40 and 56 bit ciphers. This includes all the export
1900 ciphers who are no longer supported and drops support the ephemeral RSA key
1901 exchange. The LOW ciphers currently doesn't have any ciphers in it.
1904 *) Made EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX, EVP_CIPHER and HMAC_CTX
1905 opaque. For HMAC_CTX, the following constructors and destructors
1908 HMAC_CTX *HMAC_CTX_new(void);
1909 void HMAC_CTX_free(HMAC_CTX *ctx);
1911 For EVP_MD and EVP_CIPHER, complete APIs to create, fill and
1912 destroy such methods has been added. See EVP_MD_meth_new(3) and
1913 EVP_CIPHER_meth_new(3) for documentation.
1916 1) EVP_MD_CTX_cleanup(), EVP_CIPHER_CTX_cleanup() and
1917 HMAC_CTX_cleanup() were removed. HMAC_CTX_reset() and
1918 EVP_MD_CTX_reset() should be called instead to reinitialise
1919 an already created structure.
1920 2) For consistency with the majority of our object creators and
1921 destructors, EVP_MD_CTX_(create|destroy) were renamed to
1922 EVP_MD_CTX_(new|free). The old names are retained as macros
1923 for deprecated builds.
1926 *) Added ASYNC support. Libcrypto now includes the async sub-library to enable
1927 cryptographic operations to be performed asynchronously as long as an
1928 asynchronous capable engine is used. See the ASYNC_start_job() man page for
1929 further details. Libssl has also had this capability integrated with the
1930 introduction of the new mode SSL_MODE_ASYNC and associated error
1931 SSL_ERROR_WANT_ASYNC. See the SSL_CTX_set_mode() and SSL_get_error() man
1932 pages. This work was developed in partnership with Intel Corp.
1935 *) SSL_{CTX_}set_ecdh_auto() has been removed and ECDH is support is
1936 always enabled now. If you want to disable the support you should
1937 exclude it using the list of supported ciphers. This also means that the
1938 "-no_ecdhe" option has been removed from s_server.
1941 *) SSL_{CTX}_set_tmp_ecdh() which can set 1 EC curve now internally calls
1942 SSL_{CTX_}set1_curves() which can set a list.
1945 *) Remove support for SSL_{CTX_}set_tmp_ecdh_callback(). You should set the
1946 curve you want to support using SSL_{CTX_}set1_curves().
1949 *) State machine rewrite. The state machine code has been significantly
1950 refactored in order to remove much duplication of code and solve issues
1951 with the old code (see ssl/statem/README for further details). This change
1952 does have some associated API changes. Notably the SSL_state() function
1953 has been removed and replaced by SSL_get_state which now returns an
1954 "OSSL_HANDSHAKE_STATE" instead of an int. SSL_set_state() has been removed
1955 altogether. The previous handshake states defined in ssl.h and ssl3.h have
1959 *) All instances of the string "ssleay" in the public API were replaced
1960 with OpenSSL (case-matching; e.g., OPENSSL_VERSION for #define's)
1961 Some error codes related to internal RSA_eay API's were renamed.
1964 *) The demo files in crypto/threads were moved to demo/threads.
1967 *) Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron, gmp,
1969 [Matt Caswell, Rich Salz]
1971 *) New ASN.1 embed macro.
1973 New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the
1974 structure is not allocated: it is part of the parent. That is instead of
1982 This reduces memory fragmentation and make it impossible to accidentally
1983 set a mandatory field to NULL.
1985 This currently only works for some fields specifically a SEQUENCE, CHOICE,
1986 or ASN1_STRING type which is part of a parent SEQUENCE. Since it is
1987 equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or
1991 *) Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled.
1994 *) Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although
1995 in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also
1996 an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add
1997 DES and RC4 ciphersuites.
2000 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
2001 This changes the decoding behaviour for some invalid messages,
2002 though the change is mostly in the more lenient direction, and
2003 legacy behaviour is preserved as much as possible.
2006 *) Fix no-stdio build.
2007 [ David Woodhouse <David.Woodhouse@intel.com> and also
2008 Ivan Nestlerode <ivan.nestlerode@sonos.com> ]
2010 *) New testing framework
2011 The testing framework has been largely rewritten and is now using
2012 perl and the perl modules Test::Harness and an extended variant of
2013 Test::More called OpenSSL::Test to do its work. All test scripts in
2014 test/ have been rewritten into test recipes, and all direct calls to
2015 executables in test/Makefile have become individual recipes using the
2016 simplified testing OpenSSL::Test::Simple.
2018 For documentation on our testing modules, do:
2020 perldoc test/testlib/OpenSSL/Test/Simple.pm
2021 perldoc test/testlib/OpenSSL/Test.pm
2025 *) Revamped memory debug; only -DCRYPTO_MDEBUG and -DCRYPTO_MDEBUG_ABORT
2026 are used; the latter aborts on memory leaks (usually checked on exit).
2027 Some undocumented "set malloc, etc., hooks" functions were removed
2028 and others were changed. All are now documented.
2031 *) In DSA_generate_parameters_ex, if the provided seed is too short,
2033 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
2035 *) Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
2036 from RFC4279, RFC4785, RFC5487, RFC5489.
2038 Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the
2039 original RSA_PSK patch.
2042 *) Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay
2043 era flag was never set throughout the codebase (only read). Also removed
2044 SSL3_FLAGS_POP_BUFFER which was only used if
2045 SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set.
2048 *) Changed the default name options in the "ca", "crl", "req" and "x509"
2049 to be "oneline" instead of "compat".
2052 *) Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're
2053 not aware of clients that still exhibit this bug, and the workaround
2054 hasn't been working properly for a while.
2057 *) The return type of BIO_number_read() and BIO_number_written() as well as
2058 the corresponding num_read and num_write members in the BIO structure has
2059 changed from unsigned long to uint64_t. On platforms where an unsigned
2060 long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is
2064 *) Given the pervasive nature of TLS extensions it is inadvisable to run
2065 OpenSSL without support for them. It also means that maintaining
2066 the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
2067 not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
2070 *) Removed support for the two export grade static DH ciphersuites
2071 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
2072 were newly added (along with a number of other static DH ciphersuites) to
2073 1.0.2. However the two export ones have *never* worked since they were
2074 introduced. It seems strange in any case to be adding new export
2075 ciphersuites, and given "logjam" it also does not seem correct to fix them.
2078 *) Version negotiation has been rewritten. In particular SSLv23_method(),
2079 SSLv23_client_method() and SSLv23_server_method() have been deprecated,
2080 and turned into macros which simply call the new preferred function names
2081 TLS_method(), TLS_client_method() and TLS_server_method(). All new code
2082 should use the new names instead. Also as part of this change the ssl23.h
2083 header file has been removed.
2086 *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
2087 code and the associated standard is no longer considered fit-for-purpose.
2090 *) RT2547 was closed. When generating a private key, try to make the
2091 output file readable only by the owner. This behavior change might
2092 be noticeable when interacting with other software.
2094 *) Documented all exdata functions. Added CRYPTO_free_ex_index.
2098 *) Added HTTP GET support to the ocsp command.
2101 *) Changed default digest for the dgst and enc commands from MD5 to
2105 *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
2108 *) Added support for TLS extended master secret from
2109 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
2110 initial patch which was a great help during development.
2113 *) All libssl internal structures have been removed from the public header
2114 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
2115 now redundant). Users should not attempt to access internal structures
2116 directly. Instead they should use the provided API functions.
2119 *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
2120 Access to deprecated functions can be re-enabled by running config with
2121 "enable-deprecated". In addition applications wishing to use deprecated
2122 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
2123 will, by default, disable some transitive includes that previously existed
2124 in the header files (e.g. ec.h will no longer, by default, include bn.h)
2127 *) Added support for OCB mode. OpenSSL has been granted a patent license
2128 compatible with the OpenSSL license for use of OCB. Details are available
2129 at https://www.openssl.org/source/OCB-patent-grant-OpenSSL.pdf. Support
2130 for OCB can be removed by calling config with no-ocb.
2133 *) SSLv2 support has been removed. It still supports receiving a SSLv2
2134 compatible client hello.
2137 *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
2138 done while fixing the error code for the key-too-small case.
2139 [Annie Yousar <a.yousar@informatik.hu-berlin.de>]
2141 *) CA.sh has been removed; use CA.pl instead.
2144 *) Removed old DES API.
2147 *) Remove various unsupported platforms:
2153 Sinix/ReliantUNIX RM400
2158 16-bit platforms such as WIN16
2161 *) Clean up OPENSSL_NO_xxx #define's
2162 Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
2163 Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
2164 OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
2165 OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
2166 OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
2167 Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
2168 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
2169 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
2170 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
2171 Remove MS_STATIC; it's a relic from platforms <32 bits.
2174 *) Cleaned up dead code
2175 Remove all but one '#ifdef undef' which is to be looked at.
2178 *) Clean up calling of xxx_free routines.
2179 Just like free(), fix most of the xxx_free routines to accept
2180 NULL. Remove the non-null checks from callers. Save much code.
2183 *) Add secure heap for storage of private keys (when possible).
2184 Add BIO_s_secmem(), CBIGNUM, etc.
2185 Contributed by Akamai Technologies under our Corporate CLA.
2188 *) Experimental support for a new, fast, unbiased prime candidate generator,
2189 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
2190 [Felix Laurie von Massenbach <felix@erbridge.co.uk>]
2192 *) New output format NSS in the sess_id command line tool. This allows
2193 exporting the session id and the master key in NSS keylog format.
2194 [Martin Kaiser <martin@kaiser.cx>]
2196 *) Harmonize version and its documentation. -f flag is used to display
2198 [mancha <mancha1@zoho.com>]
2200 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
2201 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
2202 [mancha <mancha1@zoho.com>]
2204 *) Fix some double frees. These are not thought to be exploitable.
2205 [mancha <mancha1@zoho.com>]
2207 *) A missing bounds check in the handling of the TLS heartbeat extension
2208 can be used to reveal up to 64k of memory to a connected client or
2211 Thanks for Neel Mehta of Google Security for discovering this bug and to
2212 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
2213 preparing the fix (CVE-2014-0160)
2214 [Adam Langley, Bodo Moeller]
2216 *) Fix for the attack described in the paper "Recovering OpenSSL
2217 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
2218 by Yuval Yarom and Naomi Benger. Details can be obtained from:
2219 http://eprint.iacr.org/2014/140
2221 Thanks to Yuval Yarom and Naomi Benger for discovering this
2222 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
2223 [Yuval Yarom and Naomi Benger]
2225 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
2226 this fixes a limitation in previous versions of OpenSSL.
2229 *) Experimental encrypt-then-mac support.
2231 Experimental support for encrypt then mac from
2232 draft-gutmann-tls-encrypt-then-mac-02.txt
2234 To enable it set the appropriate extension number (0x42 for the test
2235 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
2237 For non-compliant peers (i.e. just about everything) this should have no
2240 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
2244 *) Add EVP support for key wrapping algorithms, to avoid problems with
2245 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
2246 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
2247 algorithms and include tests cases.
2250 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
2254 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
2255 MGF1 digest and OAEP label.
2258 *) Make openssl verify return errors.
2259 [Chris Palmer <palmer@google.com> and Ben Laurie]
2261 *) New function ASN1_TIME_diff to calculate the difference between two
2262 ASN1_TIME structures or one structure and the current time.
2265 *) Update fips_test_suite to support multiple command line options. New
2266 test to induce all self test errors in sequence and check expected
2270 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
2271 sign or verify all in one operation.
2274 *) Add fips_algvs: a multicall fips utility incorporating all the algorithm
2275 test programs and fips_test_suite. Includes functionality to parse
2276 the minimal script output of fipsalgest.pl directly.
2279 *) Add authorisation parameter to FIPS_module_mode_set().
2282 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
2285 *) Use separate DRBG fields for internal and external flags. New function
2286 FIPS_drbg_health_check() to perform on demand health checking. Add
2287 generation tests to fips_test_suite with reduced health check interval to
2288 demonstrate periodic health checking. Add "nodh" option to
2289 fips_test_suite to skip very slow DH test.
2292 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
2296 *) More extensive health check for DRBG checking many more failure modes.
2297 New function FIPS_selftest_drbg_all() to handle every possible DRBG
2298 combination: call this in fips_test_suite.
2301 *) Add support for canonical generation of DSA parameter 'g'. See
2304 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
2305 POST to handle HMAC cases.
2308 *) Add functions FIPS_module_version() and FIPS_module_version_text()
2309 to return numerical and string versions of the FIPS module number.
2312 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
2313 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
2314 outside the validated module in the FIPS capable OpenSSL.
2317 *) Minor change to DRBG entropy callback semantics. In some cases
2318 there is no multiple of the block length between min_len and
2319 max_len. Allow the callback to return more than max_len bytes
2320 of entropy but discard any extra: it is the callback's responsibility
2321 to ensure that the extra data discarded does not impact the
2322 requested amount of entropy.
2325 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
2326 information in FIPS186-3, SP800-57 and SP800-131A.
2329 *) CCM support via EVP. Interface is very similar to GCM case except we
2330 must supply all data in one chunk (i.e. no update, final) and the
2331 message length must be supplied if AAD is used. Add algorithm test
2335 *) Initial version of POST overhaul. Add POST callback to allow the status
2336 of POST to be monitored and/or failures induced. Modify fips_test_suite
2337 to use callback. Always run all selftests even if one fails.
2340 *) XTS support including algorithm test driver in the fips_gcmtest program.
2341 Note: this does increase the maximum key length from 32 to 64 bytes but
2342 there should be no binary compatibility issues as existing applications
2343 will never use XTS mode.
2346 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
2347 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
2348 performs algorithm blocking for unapproved PRNG types. Also do not
2349 set PRNG type in FIPS_mode_set(): leave this to the application.
2350 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
2351 the standard OpenSSL PRNG: set additional data to a date time vector.
2354 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
2355 This shouldn't present any incompatibility problems because applications
2356 shouldn't be using these directly and any that are will need to rethink
2357 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
2360 *) Extensive self tests and health checking required by SP800-90 DRBG.
2361 Remove strength parameter from FIPS_drbg_instantiate and always
2362 instantiate at maximum supported strength.
2365 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
2368 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
2371 *) New function DH_compute_key_padded() to compute a DH key and pad with
2372 leading zeroes if needed: this complies with SP800-56A et al.
2375 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
2376 anything, incomplete, subject to change and largely untested at present.
2379 *) Modify fipscanisteronly build option to only build the necessary object
2380 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
2383 *) Add experimental option FIPSSYMS to give all symbols in
2384 fipscanister.o and FIPS or fips prefix. This will avoid
2385 conflicts with future versions of OpenSSL. Add perl script
2386 util/fipsas.pl to preprocess assembly language source files
2387 and rename any affected symbols.
2390 *) Add selftest checks and algorithm block of non-fips algorithms in
2391 FIPS mode. Remove DES2 from selftests.
2394 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
2395 return internal method without any ENGINE dependencies. Add new
2396 tiny fips sign and verify functions.
2399 *) New build option no-ec2m to disable characteristic 2 code.
2402 *) New build option "fipscanisteronly". This only builds fipscanister.o
2403 and (currently) associated fips utilities. Uses the file Makefile.fips
2404 instead of Makefile.org as the prototype.
2407 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
2408 Update fips_gcmtest to use IV generator.
2411 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
2412 setting output buffer to NULL. The *Final function must be
2413 called although it will not retrieve any additional data. The tag
2414 can be set or retrieved with a ctrl. The IV length is by default 12
2415 bytes (96 bits) but can be set to an alternative value. If the IV
2416 length exceeds the maximum IV length (currently 16 bytes) it cannot be
2420 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
2421 underlying do_cipher function handles all cipher semantics itself
2422 including padding and finalisation. This is useful if (for example)
2423 an ENGINE cipher handles block padding itself. The behaviour of
2424 do_cipher is subtly changed if this flag is set: the return value
2425 is the number of characters written to the output buffer (zero is
2426 no longer an error code) or a negative error code. Also if the
2427 input buffer is NULL and length 0 finalisation should be performed.
2430 *) If a candidate issuer certificate is already part of the constructed
2431 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
2434 *) Improve forward-security support: add functions
2436 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
2437 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
2439 for use by SSL/TLS servers; the callback function will be called whenever a
2440 new session is created, and gets to decide whether the session may be
2441 cached to make it resumable (return 0) or not (return 1). (As by the
2442 SSL/TLS protocol specifications, the session_id sent by the server will be
2443 empty to indicate that the session is not resumable; also, the server will
2444 not generate RFC 4507 (RFC 5077) session tickets.)
2446 A simple reasonable callback implementation is to return is_forward_secure.
2447 This parameter will be set to 1 or 0 depending on the ciphersuite selected
2448 by the SSL/TLS server library, indicating whether it can provide forward
2450 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
2452 *) New -verify_name option in command line utilities to set verification
2456 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
2457 Add CMAC pkey methods.
2460 *) Experimental renegotiation in s_server -www mode. If the client
2461 browses /reneg connection is renegotiated. If /renegcert it is
2462 renegotiated requesting a certificate.
2465 *) Add an "external" session cache for debugging purposes to s_server. This
2466 should help trace issues which normally are only apparent in deployed
2467 multi-process servers.
2470 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
2471 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
2472 BIO_set_cipher() and some obscure PEM functions were changed so they
2473 can now return an error. The RAND changes required a change to the
2474 RAND_METHOD structure.
2477 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
2478 a gcc attribute to warn if the result of a function is ignored. This
2479 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
2480 whose return value is often ignored.
2483 *) New -noct, -requestct, -requirect and -ctlogfile options for s_client.
2484 These allow SCTs (signed certificate timestamps) to be requested and
2485 validated when establishing a connection.
2486 [Rob Percival <robpercival@google.com>]
2488 Changes between 1.0.2g and 1.0.2h [3 May 2016]
2490 *) Prevent padding oracle in AES-NI CBC MAC check
2492 A MITM attacker can use a padding oracle attack to decrypt traffic
2493 when the connection uses an AES CBC cipher and the server support
2496 This issue was introduced as part of the fix for Lucky 13 padding
2497 attack (CVE-2013-0169). The padding check was rewritten to be in
2498 constant time by making sure that always the same bytes are read and
2499 compared against either the MAC or padding bytes. But it no longer
2500 checked that there was enough data to have both the MAC and padding
2503 This issue was reported by Juraj Somorovsky using TLS-Attacker.
2507 *) Fix EVP_EncodeUpdate overflow
2509 An overflow can occur in the EVP_EncodeUpdate() function which is used for
2510 Base64 encoding of binary data. If an attacker is able to supply very large
2511 amounts of input data then a length check can overflow resulting in a heap
2514 Internally to OpenSSL the EVP_EncodeUpdate() function is primarily used by
2515 the PEM_write_bio* family of functions. These are mainly used within the
2516 OpenSSL command line applications, so any application which processes data
2517 from an untrusted source and outputs it as a PEM file should be considered
2518 vulnerable to this issue. User applications that call these APIs directly
2519 with large amounts of untrusted data may also be vulnerable.
2521 This issue was reported by Guido Vranken.
2525 *) Fix EVP_EncryptUpdate overflow
2527 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker
2528 is able to supply very large amounts of input data after a previous call to
2529 EVP_EncryptUpdate() with a partial block then a length check can overflow
2530 resulting in a heap corruption. Following an analysis of all OpenSSL
2531 internal usage of the EVP_EncryptUpdate() function all usage is one of two
2532 forms. The first form is where the EVP_EncryptUpdate() call is known to be
2533 the first called function after an EVP_EncryptInit(), and therefore that
2534 specific call must be safe. The second form is where the length passed to
2535 EVP_EncryptUpdate() can be seen from the code to be some small value and
2536 therefore there is no possibility of an overflow. Since all instances are
2537 one of these two forms, it is believed that there can be no overflows in
2538 internal code due to this problem. It should be noted that
2539 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths.
2540 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances
2541 of these calls have also been analysed too and it is believed there are no
2542 instances in internal usage where an overflow could occur.
2544 This issue was reported by Guido Vranken.
2548 *) Prevent ASN.1 BIO excessive memory allocation
2550 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio()
2551 a short invalid encoding can cause allocation of large amounts of memory
2552 potentially consuming excessive resources or exhausting memory.
2554 Any application parsing untrusted data through d2i BIO functions is
2555 affected. The memory based functions such as d2i_X509() are *not* affected.
2556 Since the memory based functions are used by the TLS library, TLS
2557 applications are not affected.
2559 This issue was reported by Brian Carpenter.
2565 ASN1 Strings that are over 1024 bytes can cause an overread in applications
2566 using the X509_NAME_oneline() function on EBCDIC systems. This could result
2567 in arbitrary stack data being returned in the buffer.
2569 This issue was reported by Guido Vranken.
2573 *) Modify behavior of ALPN to invoke callback after SNI/servername
2574 callback, such that updates to the SSL_CTX affect ALPN.
2577 *) Remove LOW from the DEFAULT cipher list. This removes singles DES from the
2581 *) Only remove the SSLv2 methods with the no-ssl2-method option. When the
2582 methods are enabled and ssl2 is disabled the methods return NULL.
2585 Changes between 1.0.2f and 1.0.2g [1 Mar 2016]
2587 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
2588 Builds that are not configured with "enable-weak-ssl-ciphers" will not
2589 provide any "EXPORT" or "LOW" strength ciphers.
2592 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2
2593 is by default disabled at build-time. Builds that are not configured with
2594 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used,
2595 users who want to negotiate SSLv2 via the version-flexible SSLv23_method()
2596 will need to explicitly call either of:
2598 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
2600 SSL_clear_options(ssl, SSL_OP_NO_SSLv2);
2602 as appropriate. Even if either of those is used, or the application
2603 explicitly uses the version-specific SSLv2_method() or its client and
2604 server variants, SSLv2 ciphers vulnerable to exhaustive search key
2605 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT
2606 ciphers, and SSLv2 56-bit DES are no longer available.
2610 *) Fix a double-free in DSA code
2612 A double free bug was discovered when OpenSSL parses malformed DSA private
2613 keys and could lead to a DoS attack or memory corruption for applications
2614 that receive DSA private keys from untrusted sources. This scenario is
2617 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using
2622 *) Disable SRP fake user seed to address a server memory leak.
2624 Add a new method SRP_VBASE_get1_by_user that handles the seed properly.
2626 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
2627 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user
2628 was changed to ignore the "fake user" SRP seed, even if the seed
2631 Users should use SRP_VBASE_get1_by_user instead. Note that in
2632 SRP_VBASE_get1_by_user, caller must free the returned value. Note
2633 also that even though configuring the SRP seed attempts to hide
2634 invalid usernames by continuing the handshake with fake
2635 credentials, this behaviour is not constant time and no strong
2636 guarantees are made that the handshake is indistinguishable from
2637 that of a valid user.
2641 *) Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
2643 In the BN_hex2bn function the number of hex digits is calculated using an
2644 int value |i|. Later |bn_expand| is called with a value of |i * 4|. For
2645 large values of |i| this can result in |bn_expand| not allocating any
2646 memory because |i * 4| is negative. This can leave the internal BIGNUM data
2647 field as NULL leading to a subsequent NULL ptr deref. For very large values
2648 of |i|, the calculation |i * 4| could be a positive value smaller than |i|.
2649 In this case memory is allocated to the internal BIGNUM data field, but it
2650 is insufficiently sized leading to heap corruption. A similar issue exists
2651 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn
2652 is ever called by user applications with very large untrusted hex/dec data.
2653 This is anticipated to be a rare occurrence.
2655 All OpenSSL internal usage of these functions use data that is not expected
2656 to be untrusted, e.g. config file data or application command line
2657 arguments. If user developed applications generate config file data based
2658 on untrusted data then it is possible that this could also lead to security
2659 consequences. This is also anticipated to be rare.
2661 This issue was reported to OpenSSL by Guido Vranken.
2665 *) Fix memory issues in BIO_*printf functions
2667 The internal |fmtstr| function used in processing a "%s" format string in
2668 the BIO_*printf functions could overflow while calculating the length of a
2669 string and cause an OOB read when printing very long strings.
2671 Additionally the internal |doapr_outch| function can attempt to write to an
2672 OOB memory location (at an offset from the NULL pointer) in the event of a
2673 memory allocation failure. In 1.0.2 and below this could be caused where
2674 the size of a buffer to be allocated is greater than INT_MAX. E.g. this
2675 could be in processing a very long "%s" format string. Memory leaks can
2678 The first issue may mask the second issue dependent on compiler behaviour.
2679 These problems could enable attacks where large amounts of untrusted data
2680 is passed to the BIO_*printf functions. If applications use these functions
2681 in this way then they could be vulnerable. OpenSSL itself uses these
2682 functions when printing out human-readable dumps of ASN.1 data. Therefore
2683 applications that print this data could be vulnerable if the data is from
2684 untrusted sources. OpenSSL command line applications could also be
2685 vulnerable where they print out ASN.1 data, or if untrusted data is passed
2686 as command line arguments.
2688 Libssl is not considered directly vulnerable. Additionally certificates etc
2689 received via remote connections via libssl are also unlikely to be able to
2690 trigger these issues because of message size limits enforced within libssl.
2692 This issue was reported to OpenSSL Guido Vranken.
2696 *) Side channel attack on modular exponentiation
2698 A side-channel attack was found which makes use of cache-bank conflicts on
2699 the Intel Sandy-Bridge microarchitecture which could lead to the recovery
2700 of RSA keys. The ability to exploit this issue is limited as it relies on
2701 an attacker who has control of code in a thread running on the same
2702 hyper-threaded core as the victim thread which is performing decryptions.
2704 This issue was reported to OpenSSL by Yuval Yarom, The University of
2705 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and
2706 Nadia Heninger, University of Pennsylvania with more information at
2707 http://cachebleed.info.
2711 *) Change the req app to generate a 2048-bit RSA/DSA key by default,
2712 if no keysize is specified with default_bits. This fixes an
2713 omission in an earlier change that changed all RSA/DSA key generation
2714 apps to use 2048 bits by default.
2717 Changes between 1.0.2e and 1.0.2f [28 Jan 2016]
2718 *) DH small subgroups
2720 Historically OpenSSL only ever generated DH parameters based on "safe"
2721 primes. More recently (in version 1.0.2) support was provided for
2722 generating X9.42 style parameter files such as those required for RFC 5114
2723 support. The primes used in such files may not be "safe". Where an
2724 application is using DH configured with parameters based on primes that are
2725 not "safe" then an attacker could use this fact to find a peer's private
2726 DH exponent. This attack requires that the attacker complete multiple
2727 handshakes in which the peer uses the same private DH exponent. For example
2728 this could be used to discover a TLS server's private DH exponent if it's
2729 reusing the private DH exponent or it's using a static DH ciphersuite.
2731 OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in
2732 TLS. It is not on by default. If the option is not set then the server
2733 reuses the same private DH exponent for the life of the server process and
2734 would be vulnerable to this attack. It is believed that many popular
2735 applications do set this option and would therefore not be at risk.
2737 The fix for this issue adds an additional check where a "q" parameter is
2738 available (as is the case in X9.42 based parameters). This detects the
2739 only known attack, and is the only possible defense for static DH
2740 ciphersuites. This could have some performance impact.
2742 Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by
2743 default and cannot be disabled. This could have some performance impact.
2745 This issue was reported to OpenSSL by Antonio Sanso (Adobe).
2749 *) SSLv2 doesn't block disabled ciphers
2751 A malicious client can negotiate SSLv2 ciphers that have been disabled on
2752 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have
2753 been disabled, provided that the SSLv2 protocol was not also disabled via
2756 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram
2757 and Sebastian Schinzel.
2761 Changes between 1.0.2d and 1.0.2e [3 Dec 2015]
2763 *) BN_mod_exp may produce incorrect results on x86_64
2765 There is a carry propagating bug in the x86_64 Montgomery squaring
2766 procedure. No EC algorithms are affected. Analysis suggests that attacks
2767 against RSA and DSA as a result of this defect would be very difficult to
2768 perform and are not believed likely. Attacks against DH are considered just
2769 feasible (although very difficult) because most of the work necessary to
2770 deduce information about a private key may be performed offline. The amount
2771 of resources required for such an attack would be very significant and
2772 likely only accessible to a limited number of attackers. An attacker would
2773 additionally need online access to an unpatched system using the target
2774 private key in a scenario with persistent DH parameters and a private
2775 key that is shared between multiple clients. For example this can occur by
2776 default in OpenSSL DHE based SSL/TLS ciphersuites.
2778 This issue was reported to OpenSSL by Hanno Böck.
2782 *) Certificate verify crash with missing PSS parameter
2784 The signature verification routines will crash with a NULL pointer
2785 dereference if presented with an ASN.1 signature using the RSA PSS
2786 algorithm and absent mask generation function parameter. Since these
2787 routines are used to verify certificate signature algorithms this can be
2788 used to crash any certificate verification operation and exploited in a
2789 DoS attack. Any application which performs certificate verification is
2790 vulnerable including OpenSSL clients and servers which enable client
2793 This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
2797 *) X509_ATTRIBUTE memory leak
2799 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
2800 memory. This structure is used by the PKCS#7 and CMS routines so any
2801 application which reads PKCS#7 or CMS data from untrusted sources is
2802 affected. SSL/TLS is not affected.
2804 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
2809 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
2810 This changes the decoding behaviour for some invalid messages,
2811 though the change is mostly in the more lenient direction, and
2812 legacy behaviour is preserved as much as possible.
2815 *) In DSA_generate_parameters_ex, if the provided seed is too short,
2817 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
2819 Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
2821 *) Alternate chains certificate forgery
2823 During certificate verification, OpenSSL will attempt to find an
2824 alternative certificate chain if the first attempt to build such a chain
2825 fails. An error in the implementation of this logic can mean that an
2826 attacker could cause certain checks on untrusted certificates to be
2827 bypassed, such as the CA flag, enabling them to use a valid leaf
2828 certificate to act as a CA and "issue" an invalid certificate.
2830 This issue was reported to OpenSSL by Adam Langley/David Benjamin
2834 Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
2836 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI
2837 incompatibility in the handling of HMAC. The previous ABI has now been
2841 Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
2843 *) Malformed ECParameters causes infinite loop
2845 When processing an ECParameters structure OpenSSL enters an infinite loop
2846 if the curve specified is over a specially malformed binary polynomial
2849 This can be used to perform denial of service against any
2850 system which processes public keys, certificate requests or
2851 certificates. This includes TLS clients and TLS servers with
2852 client authentication enabled.
2854 This issue was reported to OpenSSL by Joseph Barr-Pixton.
2858 *) Exploitable out-of-bounds read in X509_cmp_time
2860 X509_cmp_time does not properly check the length of the ASN1_TIME
2861 string and can read a few bytes out of bounds. In addition,
2862 X509_cmp_time accepts an arbitrary number of fractional seconds in the
2865 An attacker can use this to craft malformed certificates and CRLs of
2866 various sizes and potentially cause a segmentation fault, resulting in
2867 a DoS on applications that verify certificates or CRLs. TLS clients
2868 that verify CRLs are affected. TLS clients and servers with client
2869 authentication enabled may be affected if they use custom verification
2872 This issue was reported to OpenSSL by Robert Swiecki (Google), and
2873 independently by Hanno Böck.
2877 *) PKCS7 crash with missing EnvelopedContent
2879 The PKCS#7 parsing code does not handle missing inner EncryptedContent
2880 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
2881 with missing content and trigger a NULL pointer dereference on parsing.
2883 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
2884 structures from untrusted sources are affected. OpenSSL clients and
2885 servers are not affected.
2887 This issue was reported to OpenSSL by Michal Zalewski (Google).
2891 *) CMS verify infinite loop with unknown hash function
2893 When verifying a signedData message the CMS code can enter an infinite loop
2894 if presented with an unknown hash function OID. This can be used to perform
2895 denial of service against any system which verifies signedData messages using
2897 This issue was reported to OpenSSL by Johannes Bauer.
2901 *) Race condition handling NewSessionTicket
2903 If a NewSessionTicket is received by a multi-threaded client when attempting to
2904 reuse a previous ticket then a race condition can occur potentially leading to
2905 a double free of the ticket data.
2909 *) Only support 256-bit or stronger elliptic curves with the
2910 'ecdh_auto' setting (server) or by default (client). Of supported
2911 curves, prefer P-256 (both).
2914 Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
2916 *) ClientHello sigalgs DoS fix
2918 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
2919 invalid signature algorithms extension a NULL pointer dereference will
2920 occur. This can be exploited in a DoS attack against the server.
2922 This issue was was reported to OpenSSL by David Ramos of Stanford
2925 [Stephen Henson and Matt Caswell]
2927 *) Multiblock corrupted pointer fix
2929 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
2930 feature only applies on 64 bit x86 architecture platforms that support AES
2931 NI instructions. A defect in the implementation of "multiblock" can cause
2932 OpenSSL's internal write buffer to become incorrectly set to NULL when
2933 using non-blocking IO. Typically, when the user application is using a
2934 socket BIO for writing, this will only result in a failed connection.
2935 However if some other BIO is used then it is likely that a segmentation
2936 fault will be triggered, thus enabling a potential DoS attack.
2938 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
2942 *) Segmentation fault in DTLSv1_listen fix
2944 The DTLSv1_listen function is intended to be stateless and processes the
2945 initial ClientHello from many peers. It is common for user code to loop
2946 over the call to DTLSv1_listen until a valid ClientHello is received with
2947 an associated cookie. A defect in the implementation of DTLSv1_listen means
2948 that state is preserved in the SSL object from one invocation to the next
2949 that can lead to a segmentation fault. Errors processing the initial
2950 ClientHello can trigger this scenario. An example of such an error could be
2951 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
2954 This issue was reported to OpenSSL by Per Allansson.
2958 *) Segmentation fault in ASN1_TYPE_cmp fix
2960 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
2961 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
2962 certificate signature algorithm consistency this can be used to crash any
2963 certificate verification operation and exploited in a DoS attack. Any
2964 application which performs certificate verification is vulnerable including
2965 OpenSSL clients and servers which enable client authentication.
2969 *) Segmentation fault for invalid PSS parameters fix
2971 The signature verification routines will crash with a NULL pointer
2972 dereference if presented with an ASN.1 signature using the RSA PSS
2973 algorithm and invalid parameters. Since these routines are used to verify
2974 certificate signature algorithms this can be used to crash any
2975 certificate verification operation and exploited in a DoS attack. Any
2976 application which performs certificate verification is vulnerable including
2977 OpenSSL clients and servers which enable client authentication.
2979 This issue was was reported to OpenSSL by Brian Carpenter.
2983 *) ASN.1 structure reuse memory corruption fix
2985 Reusing a structure in ASN.1 parsing may allow an attacker to cause
2986 memory corruption via an invalid write. Such reuse is and has been
2987 strongly discouraged and is believed to be rare.
2989 Applications that parse structures containing CHOICE or ANY DEFINED BY
2990 components may be affected. Certificate parsing (d2i_X509 and related
2991 functions) are however not affected. OpenSSL clients and servers are
2996 *) PKCS7 NULL pointer dereferences fix
2998 The PKCS#7 parsing code does not handle missing outer ContentInfo
2999 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
3000 missing content and trigger a NULL pointer dereference on parsing.
3002 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
3003 otherwise parse PKCS#7 structures from untrusted sources are
3004 affected. OpenSSL clients and servers are not affected.
3006 This issue was reported to OpenSSL by Michal Zalewski (Google).
3010 *) DoS via reachable assert in SSLv2 servers fix
3012 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
3013 servers that both support SSLv2 and enable export cipher suites by sending
3014 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
3016 This issue was discovered by Sean Burford (Google) and Emilia Käsper
3017 (OpenSSL development team).
3021 *) Empty CKE with client auth and DHE fix
3023 If client auth is used then a server can seg fault in the event of a DHE
3024 ciphersuite being selected and a zero length ClientKeyExchange message
3025 being sent by the client. This could be exploited in a DoS attack.
3029 *) Handshake with unseeded PRNG fix
3031 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
3032 with an unseeded PRNG. The conditions are:
3033 - The client is on a platform where the PRNG has not been seeded
3034 automatically, and the user has not seeded manually
3035 - A protocol specific client method version has been used (i.e. not
3036 SSL_client_methodv23)
3037 - A ciphersuite is used that does not require additional random data from
3038 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
3040 If the handshake succeeds then the client random that has been used will
3041 have been generated from a PRNG with insufficient entropy and therefore the
3042 output may be predictable.
3044 For example using the following command with an unseeded openssl will
3045 succeed on an unpatched platform:
3047 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
3051 *) Use After Free following d2i_ECPrivatekey error fix
3053 A malformed EC private key file consumed via the d2i_ECPrivateKey function
3054 could cause a use after free condition. This, in turn, could cause a double
3055 free in several private key parsing functions (such as d2i_PrivateKey
3056 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
3057 for applications that receive EC private keys from untrusted
3058 sources. This scenario is considered rare.
3060 This issue was discovered by the BoringSSL project and fixed in their
3065 *) X509_to_X509_REQ NULL pointer deref fix
3067 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
3068 the certificate key is invalid. This function is rarely used in practice.
3070 This issue was discovered by Brian Carpenter.
3074 *) Removed the export ciphers from the DEFAULT ciphers
3077 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
3079 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
3080 ARMv5 through ARMv8, as opposite to "locking" it to single one.
3081 So far those who have to target multiple platforms would compromise
3082 and argue that binary targeting say ARMv5 would still execute on
3083 ARMv8. "Universal" build resolves this compromise by providing
3084 near-optimal performance even on newer platforms.
3087 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
3088 (other platforms pending).
3089 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
3091 *) Add support for the SignedCertificateTimestampList certificate and
3092 OCSP response extensions from RFC6962.
3095 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
3096 for corner cases. (Certain input points at infinity could lead to
3097 bogus results, with non-infinity inputs mapped to infinity too.)
3100 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
3101 This covers AES, SHA256/512 and GHASH. "Initial" means that most
3102 common cases are optimized and there still is room for further
3103 improvements. Vector Permutation AES for Altivec is also added.
3106 *) Add support for little-endian ppc64 Linux target.
3107 [Marcelo Cerri (IBM)]
3109 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
3110 SHA1, SHA256 and GHASH. "Initial" means that most common cases
3111 are optimized and there still is room for further improvements.
3112 Both 32- and 64-bit modes are supported.
3113 [Andy Polyakov, Ard Biesheuvel (Linaro)]
3115 *) Improved ARMv7 NEON support.
3118 *) Support for SPARC Architecture 2011 crypto extensions, first
3119 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
3120 SHA256/512, MD5, GHASH and modular exponentiation.
3121 [Andy Polyakov, David Miller]
3123 *) Accelerated modular exponentiation for Intel processors, a.k.a.
3125 [Shay Gueron & Vlad Krasnov (Intel Corp)]
3127 *) Support for new and upcoming Intel processors, including AVX2,
3128 BMI and SHA ISA extensions. This includes additional "stitched"
3129 implementations, AESNI-SHA256 and GCM, and multi-buffer support
3132 This work was sponsored by Intel Corp.
3135 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
3136 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
3137 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
3140 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
3141 this fixes a limitation in previous versions of OpenSSL.
3144 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
3145 MGF1 digest and OAEP label.
3148 *) Add EVP support for key wrapping algorithms, to avoid problems with
3149 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
3150 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
3151 algorithms and include tests cases.
3154 *) Add functions to allocate and set the fields of an ECDSA_METHOD
3156 [Douglas E. Engert, Steve Henson]
3158 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
3159 difference in days and seconds between two tm or ASN1_TIME structures.
3162 *) Add -rev test option to s_server to just reverse order of characters
3163 received by client and send back to server. Also prints an abbreviated
3164 summary of the connection parameters.
3167 *) New option -brief for s_client and s_server to print out a brief summary
3168 of connection parameters.
3171 *) Add callbacks for arbitrary TLS extensions.
3172 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
3174 *) New option -crl_download in several openssl utilities to download CRLs
3175 from CRLDP extension in certificates.
3178 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
3181 *) New function X509_CRL_diff to generate a delta CRL from the difference
3182 of two full CRLs. Add support to "crl" utility.
3185 *) New functions to set lookup_crls function and to retrieve
3186 X509_STORE from X509_STORE_CTX.
3189 *) Print out deprecated issuer and subject unique ID fields in
3193 *) Extend OCSP I/O functions so they can be used for simple general purpose
3194 HTTP as well as OCSP. New wrapper function which can be used to download
3195 CRLs using the OCSP API.
3198 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
3201 *) SSL_CONF* functions. These provide a common framework for application
3202 configuration using configuration files or command lines.
3205 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
3206 message callback and prints the results. Needs compile time option
3207 "enable-ssl-trace". New options to s_client and s_server to enable
3211 *) New ctrl and macro to retrieve supported points extensions.
3212 Print out extension in s_server and s_client.
3215 *) New functions to retrieve certificate signature and signature
3219 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
3223 *) New Suite B modes for TLS code. These use and enforce the requirements
3224 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
3225 only use Suite B curves. The Suite B modes can be set by using the
3226 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
3229 *) New chain verification flags for Suite B levels of security. Check
3230 algorithms are acceptable when flags are set in X509_verify_cert.
3233 *) Make tls1_check_chain return a set of flags indicating checks passed
3234 by a certificate chain. Add additional tests to handle client
3235 certificates: checks for matching certificate type and issuer name
3239 *) If an attempt is made to use a signature algorithm not in the peer
3240 preference list abort the handshake. If client has no suitable
3241 signature algorithms in response to a certificate request do not
3242 use the certificate.
3245 *) If server EC tmp key is not in client preference list abort handshake.
3248 *) Add support for certificate stores in CERT structure. This makes it
3249 possible to have different stores per SSL structure or one store in
3250 the parent SSL_CTX. Include distinct stores for certificate chain
3251 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
3252 to build and store a certificate chain in CERT structure: returning
3253 an error if the chain cannot be built: this will allow applications
3254 to test if a chain is correctly configured.
3256 Note: if the CERT based stores are not set then the parent SSL_CTX
3257 store is used to retain compatibility with existing behaviour.
3261 *) New function ssl_set_client_disabled to set a ciphersuite disabled
3262 mask based on the current session, check mask when sending client
3263 hello and checking the requested ciphersuite.
3266 *) New ctrls to retrieve and set certificate types in a certificate
3267 request message. Print out received values in s_client. If certificate
3268 types is not set with custom values set sensible values based on
3269 supported signature algorithms.
3272 *) Support for distinct client and server supported signature algorithms.
3275 *) Add certificate callback. If set this is called whenever a certificate
3276 is required by client or server. An application can decide which
3277 certificate chain to present based on arbitrary criteria: for example
3278 supported signature algorithms. Add very simple example to s_server.
3279 This fixes many of the problems and restrictions of the existing client
3280 certificate callback: for example you can now clear an existing
3281 certificate and specify the whole chain.
3284 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
3285 the certificate can be used for (if anything). Set valid_flags field
3286 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
3287 to have similar checks in it.
3289 Add new "cert_flags" field to CERT structure and include a "strict mode".
3290 This enforces some TLS certificate requirements (such as only permitting
3291 certificate signature algorithms contained in the supported algorithms
3292 extension) which some implementations ignore: this option should be used
3293 with caution as it could cause interoperability issues.
3296 *) Update and tidy signature algorithm extension processing. Work out
3297 shared signature algorithms based on preferences and peer algorithms
3298 and print them out in s_client and s_server. Abort handshake if no
3299 shared signature algorithms.
3302 *) Add new functions to allow customised supported signature algorithms
3303 for SSL and SSL_CTX structures. Add options to s_client and s_server
3307 *) New function SSL_certs_clear() to delete all references to certificates
3308 from an SSL structure. Before this once a certificate had been added
3309 it couldn't be removed.
3312 *) Integrate hostname, email address and IP address checking with certificate
3313 verification. New verify options supporting checking in openssl utility.
3316 *) Fixes and wildcard matching support to hostname and email checking
3317 functions. Add manual page.
3318 [Florian Weimer (Red Hat Product Security Team)]
3320 *) New functions to check a hostname email or IP address against a
3321 certificate. Add options x509 utility to print results of checks against
3325 *) Fix OCSP checking.
3326 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
3328 *) Initial experimental support for explicitly trusted non-root CAs.
3329 OpenSSL still tries to build a complete chain to a root but if an
3330 intermediate CA has a trust setting included that is used. The first
3331 setting is used: whether to trust (e.g., -addtrust option to the x509
3335 *) Add -trusted_first option which attempts to find certificates in the
3336 trusted store even if an untrusted chain is also supplied.
3339 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
3340 platform support for Linux and Android.
3343 *) Support for linux-x32, ILP32 environment in x86_64 framework.
3346 *) Experimental multi-implementation support for FIPS capable OpenSSL.
3347 When in FIPS mode the approved implementations are used as normal,
3348 when not in FIPS mode the internal unapproved versions are used instead.
3349 This means that the FIPS capable OpenSSL isn't forced to use the
3350 (often lower performance) FIPS implementations outside FIPS mode.
3353 *) Transparently support X9.42 DH parameters when calling
3354 PEM_read_bio_DHparameters. This means existing applications can handle
3355 the new parameter format automatically.
3358 *) Initial experimental support for X9.42 DH parameter format: mainly
3359 to support use of 'q' parameter for RFC5114 parameters.
3362 *) Add DH parameters from RFC5114 including test data to dhtest.
3365 *) Support for automatic EC temporary key parameter selection. If enabled
3366 the most preferred EC parameters are automatically used instead of
3367 hardcoded fixed parameters. Now a server just has to call:
3368 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
3369 support ECDH and use the most appropriate parameters.
3372 *) Enhance and tidy EC curve and point format TLS extension code. Use
3373 static structures instead of allocation if default values are used.
3374 New ctrls to set curves we wish to support and to retrieve shared curves.
3375 Print out shared curves in s_server. New options to s_server and s_client
3376 to set list of supported curves.
3379 *) New ctrls to retrieve supported signature algorithms and
3380 supported curve values as an array of NIDs. Extend openssl utility
3381 to print out received values.
3384 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
3385 between NIDs and the more common NIST names such as "P-256". Enhance
3386 ecparam utility and ECC method to recognise the NIST names for curves.
3389 *) Enhance SSL/TLS certificate chain handling to support different
3390 chains for each certificate instead of one chain in the parent SSL_CTX.
3393 *) Support for fixed DH ciphersuite client authentication: where both
3394 server and client use DH certificates with common parameters.
3397 *) Support for fixed DH ciphersuites: those requiring DH server
3401 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
3403 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
3404 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
3405 X509_CINF_get_signature were reverted post internal team review.
3407 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
3409 *) Build fixes for the Windows and OpenVMS platforms
3410 [Matt Caswell and Richard Levitte]
3412 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
3414 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
3415 message can cause a segmentation fault in OpenSSL due to a NULL pointer
3416 dereference. This could lead to a Denial Of Service attack. Thanks to
3417 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
3421 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
3422 dtls1_buffer_record function under certain conditions. In particular this
3423 could occur if an attacker sent repeated DTLS records with the same
3424 sequence number but for the next epoch. The memory leak could be exploited
3425 by an attacker in a Denial of Service attack through memory exhaustion.
3426 Thanks to Chris Mueller for reporting this issue.
3430 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
3431 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
3432 method would be set to NULL which could later result in a NULL pointer
3433 dereference. Thanks to Frank Schmirler for reporting this issue.
3437 *) Abort handshake if server key exchange message is omitted for ephemeral
3440 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
3441 reporting this issue.
3445 *) Remove non-export ephemeral RSA code on client and server. This code
3446 violated the TLS standard by allowing the use of temporary RSA keys in
3447 non-export ciphersuites and could be used by a server to effectively
3448 downgrade the RSA key length used to a value smaller than the server
3449 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
3450 INRIA or reporting this issue.
3454 *) Fixed issue where DH client certificates are accepted without verification.
3455 An OpenSSL server will accept a DH certificate for client authentication
3456 without the certificate verify message. This effectively allows a client to
3457 authenticate without the use of a private key. This only affects servers
3458 which trust a client certificate authority which issues certificates
3459 containing DH keys: these are extremely rare and hardly ever encountered.
3460 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
3465 *) Ensure that the session ID context of an SSL is updated when its
3466 SSL_CTX is updated via SSL_set_SSL_CTX.
3468 The session ID context is typically set from the parent SSL_CTX,
3469 and can vary with the CTX.
3472 *) Fix various certificate fingerprint issues.
3474 By using non-DER or invalid encodings outside the signed portion of a
3475 certificate the fingerprint can be changed without breaking the signature.
3476 Although no details of the signed portion of the certificate can be changed
3477 this can cause problems with some applications: e.g. those using the
3478 certificate fingerprint for blacklists.
3480 1. Reject signatures with non zero unused bits.
3482 If the BIT STRING containing the signature has non zero unused bits reject
3483 the signature. All current signature algorithms require zero unused bits.
3485 2. Check certificate algorithm consistency.
3487 Check the AlgorithmIdentifier inside TBS matches the one in the
3488 certificate signature. NB: this will result in signature failure
3489 errors for some broken certificates.
3491 Thanks to Konrad Kraszewski from Google for reporting this issue.
3493 3. Check DSA/ECDSA signatures use DER.
3495 Re-encode DSA/ECDSA signatures and compare with the original received
3496 signature. Return an error if there is a mismatch.
3498 This will reject various cases including garbage after signature
3499 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
3500 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
3501 (negative or with leading zeroes).
3503 Further analysis was conducted and fixes were developed by Stephen Henson
3504 of the OpenSSL core team.
3509 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
3510 results on some platforms, including x86_64. This bug occurs at random
3511 with a very low probability, and is not known to be exploitable in any
3512 way, though its exact impact is difficult to determine. Thanks to Pieter
3513 Wuille (Blockstream) who reported this issue and also suggested an initial
3514 fix. Further analysis was conducted by the OpenSSL development team and
3515 Adam Langley of Google. The final fix was developed by Andy Polyakov of
3516 the OpenSSL core team.
3520 *) Do not resume sessions on the server if the negotiated protocol
3521 version does not match the session's version. Resuming with a different
3522 version, while not strictly forbidden by the RFC, is of questionable
3523 sanity and breaks all known clients.
3524 [David Benjamin, Emilia Käsper]
3526 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
3527 early CCS messages during renegotiation. (Note that because
3528 renegotiation is encrypted, this early CCS was not exploitable.)
3531 *) Tighten client-side session ticket handling during renegotiation:
3532 ensure that the client only accepts a session ticket if the server sends
3533 the extension anew in the ServerHello. Previously, a TLS client would
3534 reuse the old extension state and thus accept a session ticket if one was
3535 announced in the initial ServerHello.
3537 Similarly, ensure that the client requires a session ticket if one
3538 was advertised in the ServerHello. Previously, a TLS client would
3539 ignore a missing NewSessionTicket message.
3542 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
3544 *) SRTP Memory Leak.
3546 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
3547 sends a carefully crafted handshake message, to cause OpenSSL to fail
3548 to free up to 64k of memory causing a memory leak. This could be
3549 exploited in a Denial Of Service attack. This issue affects OpenSSL
3550 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
3551 whether SRTP is used or configured. Implementations of OpenSSL that
3552 have been compiled with OPENSSL_NO_SRTP defined are not affected.
3554 The fix was developed by the OpenSSL team.
3558 *) Session Ticket Memory Leak.
3560 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
3561 integrity of that ticket is first verified. In the event of a session
3562 ticket integrity check failing, OpenSSL will fail to free memory
3563 causing a memory leak. By sending a large number of invalid session
3564 tickets an attacker could exploit this issue in a Denial Of Service
3569 *) Build option no-ssl3 is incomplete.
3571 When OpenSSL is configured with "no-ssl3" as a build option, servers
3572 could accept and complete a SSL 3.0 handshake, and clients could be
3573 configured to send them.
3575 [Akamai and the OpenSSL team]
3577 *) Add support for TLS_FALLBACK_SCSV.
3578 Client applications doing fallback retries should call
3579 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
3581 [Adam Langley, Bodo Moeller]
3583 *) Add additional DigestInfo checks.
3585 Re-encode DigestInto in DER and check against the original when
3586 verifying RSA signature: this will reject any improperly encoded
3587 DigestInfo structures.
3589 Note: this is a precautionary measure and no attacks are currently known.
3593 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
3595 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
3596 SRP code can be overrun an internal buffer. Add sanity check that
3597 g, A, B < N to SRP code.
3599 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
3600 Group for discovering this issue.
3604 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
3605 TLS 1.0 instead of higher protocol versions when the ClientHello message
3606 is badly fragmented. This allows a man-in-the-middle attacker to force a
3607 downgrade to TLS 1.0 even if both the server and the client support a
3608 higher protocol version, by modifying the client's TLS records.
3610 Thanks to David Benjamin and Adam Langley (Google) for discovering and
3611 researching this issue.
3615 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
3616 to a denial of service attack. A malicious server can crash the client
3617 with a null pointer dereference (read) by specifying an anonymous (EC)DH
3618 ciphersuite and sending carefully crafted handshake messages.
3620 Thanks to Felix Gröbert (Google) for discovering and researching this
3625 *) By sending carefully crafted DTLS packets an attacker could cause openssl
3626 to leak memory. This can be exploited through a Denial of Service attack.
3627 Thanks to Adam Langley for discovering and researching this issue.
3631 *) An attacker can force openssl to consume large amounts of memory whilst
3632 processing DTLS handshake messages. This can be exploited through a
3633 Denial of Service attack.
3634 Thanks to Adam Langley for discovering and researching this issue.
3638 *) An attacker can force an error condition which causes openssl to crash
3639 whilst processing DTLS packets due to memory being freed twice. This
3640 can be exploited through a Denial of Service attack.
3641 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
3646 *) If a multithreaded client connects to a malicious server using a resumed
3647 session and the server sends an ec point format extension it could write
3648 up to 255 bytes to freed memory.
3650 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
3655 *) A malicious server can crash an OpenSSL client with a null pointer
3656 dereference (read) by specifying an SRP ciphersuite even though it was not
3657 properly negotiated with the client. This can be exploited through a
3658 Denial of Service attack.
3660 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
3661 discovering and researching this issue.
3665 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
3666 X509_name_oneline, X509_name_print_ex et al. to leak some information
3667 from the stack. Applications may be affected if they echo pretty printing
3668 output to the attacker.
3670 Thanks to Ivan Fratric (Google) for discovering this issue.
3672 [Emilia Käsper, and Steve Henson]
3674 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
3675 for corner cases. (Certain input points at infinity could lead to
3676 bogus results, with non-infinity inputs mapped to infinity too.)
3679 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
3681 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
3682 handshake can force the use of weak keying material in OpenSSL
3683 SSL/TLS clients and servers.
3685 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
3686 researching this issue. (CVE-2014-0224)
3687 [KIKUCHI Masashi, Steve Henson]
3689 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
3690 OpenSSL DTLS client the code can be made to recurse eventually crashing
3693 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
3695 [Imre Rad, Steve Henson]
3697 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
3698 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
3699 client or server. This is potentially exploitable to run arbitrary
3700 code on a vulnerable client or server.
3702 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
3703 [Jüri Aedla, Steve Henson]
3705 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
3706 are subject to a denial of service attack.
3708 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
3709 this issue. (CVE-2014-3470)
3710 [Felix Gröbert, Ivan Fratric, Steve Henson]
3712 *) Harmonize version and its documentation. -f flag is used to display
3714 [mancha <mancha1@zoho.com>]
3716 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
3717 in i2d_ECPrivateKey.
3718 [mancha <mancha1@zoho.com>]
3720 *) Fix some double frees. These are not thought to be exploitable.
3721 [mancha <mancha1@zoho.com>]
3723 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
3725 *) A missing bounds check in the handling of the TLS heartbeat extension
3726 can be used to reveal up to 64k of memory to a connected client or
3729 Thanks for Neel Mehta of Google Security for discovering this bug and to
3730 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
3731 preparing the fix (CVE-2014-0160)
3732 [Adam Langley, Bodo Moeller]
3734 *) Fix for the attack described in the paper "Recovering OpenSSL
3735 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
3736 by Yuval Yarom and Naomi Benger. Details can be obtained from:
3737 http://eprint.iacr.org/2014/140
3739 Thanks to Yuval Yarom and Naomi Benger for discovering this
3740 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
3741 [Yuval Yarom and Naomi Benger]
3743 *) TLS pad extension: draft-agl-tls-padding-03
3745 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
3746 TLS client Hello record length value would otherwise be > 255 and
3747 less that 512 pad with a dummy extension containing zeroes so it
3748 is at least 512 bytes long.
3750 [Adam Langley, Steve Henson]
3752 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
3754 *) Fix for TLS record tampering bug. A carefully crafted invalid
3755 handshake could crash OpenSSL with a NULL pointer exception.
3756 Thanks to Anton Johansson for reporting this issues.
3759 *) Keep original DTLS digest and encryption contexts in retransmission
3760 structures so we can use the previous session parameters if they need
3761 to be resent. (CVE-2013-6450)
3764 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
3765 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
3766 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
3767 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
3768 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
3769 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
3770 [Rob Stradling, Adam Langley]
3772 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
3774 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
3775 supporting platforms or when small records were transferred.
3776 [Andy Polyakov, Steve Henson]
3778 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
3780 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
3782 This addresses the flaw in CBC record processing discovered by
3783 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
3784 at: http://www.isg.rhul.ac.uk/tls/
3786 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
3787 Security Group at Royal Holloway, University of London
3788 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
3789 Emilia Käsper for the initial patch.
3791 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
3793 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
3794 ciphersuites which can be exploited in a denial of service attack.
3795 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
3796 and detecting this bug and to Wolfgang Ettlinger
3797 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
3801 *) Return an error when checking OCSP signatures when key is NULL.
3802 This fixes a DoS attack. (CVE-2013-0166)
3805 *) Make openssl verify return errors.
3806 [Chris Palmer <palmer@google.com> and Ben Laurie]
3808 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
3809 the right response is stapled. Also change SSL_get_certificate()
3810 so it returns the certificate actually sent.
3811 See http://rt.openssl.org/Ticket/Display.html?id=2836.
3812 [Rob Stradling <rob.stradling@comodo.com>]
3814 *) Fix possible deadlock when decoding public keys.
3817 *) Don't use TLS 1.0 record version number in initial client hello
3821 Changes between 1.0.1b and 1.0.1c [10 May 2012]
3823 *) Sanity check record length before skipping explicit IV in TLS
3824 1.2, 1.1 and DTLS to fix DoS attack.
3826 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
3827 fuzzing as a service testing platform.
3831 *) Initialise tkeylen properly when encrypting CMS messages.
3832 Thanks to Solar Designer of Openwall for reporting this issue.
3835 *) In FIPS mode don't try to use composite ciphers as they are not
3839 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
3841 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
3842 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
3843 mean any application compiled against OpenSSL 1.0.0 headers setting
3844 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disabling
3845 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
3846 0x10000000L Any application which was previously compiled against
3847 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
3848 will need to be recompiled as a result. Letting be results in
3849 inability to disable specifically TLS 1.1 and in client context,
3850 in unlike event, limit maximum offered version to TLS 1.0 [see below].
3853 *) In order to ensure interoperability SSL_OP_NO_protocolX does not
3854 disable just protocol X, but all protocols above X *if* there are
3855 protocols *below* X still enabled. In more practical terms it means
3856 that if application wants to disable TLS1.0 in favor of TLS1.1 and
3857 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
3858 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
3862 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
3864 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
3865 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
3866 in CRYPTO_realloc_clean.
3868 Thanks to Tavis Ormandy, Google Security Team, for discovering this
3869 issue and to Adam Langley <agl@chromium.org> for fixing it.
3871 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
3873 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
3876 *) Workarounds for some broken servers that "hang" if a client hello
3877 record length exceeds 255 bytes.
3879 1. Do not use record version number > TLS 1.0 in initial client
3880 hello: some (but not all) hanging servers will now work.
3881 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
3882 the number of ciphers sent in the client hello. This should be
3883 set to an even number, such as 50, for example by passing:
3884 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
3885 Most broken servers should now work.
3886 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
3887 TLS 1.2 client support entirely.
3890 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
3893 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
3895 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
3896 STRING form instead of a DigestInfo.
3899 *) The format used for MDC2 RSA signatures is inconsistent between EVP
3900 and the RSA_sign/RSA_verify functions. This was made more apparent when
3901 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
3902 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
3903 the correct format in RSA_verify so both forms transparently work.
3906 *) Some servers which support TLS 1.0 can choke if we initially indicate
3907 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
3908 encrypted premaster secret. As a workaround use the maximum permitted
3909 client version in client hello, this should keep such servers happy
3910 and still work with previous versions of OpenSSL.
3913 *) Add support for TLS/DTLS heartbeats.
3914 [Robin Seggelmann <seggelmann@fh-muenster.de>]
3916 *) Add support for SCTP.
3917 [Robin Seggelmann <seggelmann@fh-muenster.de>]
3919 *) Improved PRNG seeding for VOS.
3920 [Paul Green <Paul.Green@stratus.com>]
3922 *) Extensive assembler packs updates, most notably:
3924 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
3925 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
3926 - x86_64: bit-sliced AES implementation;
3927 - ARM: NEON support, contemporary platforms optimizations;
3928 - s390x: z196 support;
3929 - *: GHASH and GF(2^m) multiplication implementations;
3933 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
3934 (removal of unnecessary code)
3935 [Peter Sylvester <peter.sylvester@edelweb.fr>]
3937 *) Add TLS key material exporter from RFC 5705.
3940 *) Add DTLS-SRTP negotiation from RFC 5764.
3943 *) Add Next Protocol Negotiation,
3944 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
3945 disabled with a no-npn flag to config or Configure. Code donated
3947 [Adam Langley <agl@google.com> and Ben Laurie]
3949 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
3950 NIST-P256, NIST-P521, with constant-time single point multiplication on
3951 typical inputs. Compiler support for the nonstandard type __uint128_t is
3952 required to use this (present in gcc 4.4 and later, for 64-bit builds).
3953 Code made available under Apache License version 2.0.
3955 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
3956 line to include this in your build of OpenSSL, and run "make depend" (or
3957 "make update"). This enables the following EC_METHODs:
3959 EC_GFp_nistp224_method()
3960 EC_GFp_nistp256_method()
3961 EC_GFp_nistp521_method()
3963 EC_GROUP_new_by_curve_name() will automatically use these (while
3964 EC_GROUP_new_curve_GFp() currently prefers the more flexible
3966 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
3968 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
3969 all platforms. Move ssize_t definition from e_os.h to the public
3970 header file e_os2.h as it now appears in public header file cms.h
3973 *) New -sigopt option to the ca, req and x509 utilities. Additional
3974 signature parameters can be passed using this option and in
3978 *) Add RSA PSS signing function. This will generate and set the
3979 appropriate AlgorithmIdentifiers for PSS based on those in the
3980 corresponding EVP_MD_CTX structure. No application support yet.
3983 *) Support for companion algorithm specific ASN1 signing routines.
3984 New function ASN1_item_sign_ctx() signs a pre-initialised
3985 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
3986 the appropriate parameters.
3989 *) Add new algorithm specific ASN1 verification initialisation function
3990 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
3991 handling will be the same no matter what EVP_PKEY_METHOD is used.
3992 Add a PSS handler to support verification of PSS signatures: checked
3993 against a number of sample certificates.
3996 *) Add signature printing for PSS. Add PSS OIDs.
3997 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
3999 *) Add algorithm specific signature printing. An individual ASN1 method
4000 can now print out signatures instead of the standard hex dump.
4002 More complex signatures (e.g. PSS) can print out more meaningful
4003 information. Include DSA version that prints out the signature
4007 *) Password based recipient info support for CMS library: implementing
4011 *) Split password based encryption into PBES2 and PBKDF2 functions. This
4012 neatly separates the code into cipher and PBE sections and is required
4013 for some algorithms that split PBES2 into separate pieces (such as
4014 password based CMS).
4017 *) Session-handling fixes:
4018 - Fix handling of connections that are resuming with a session ID,
4019 but also support Session Tickets.
4020 - Fix a bug that suppressed issuing of a new ticket if the client
4021 presented a ticket with an expired session.
4022 - Try to set the ticket lifetime hint to something reasonable.
4023 - Make tickets shorter by excluding irrelevant information.
4024 - On the client side, don't ignore renewed tickets.
4025 [Adam Langley, Bodo Moeller (Google)]
4027 *) Fix PSK session representation.
4030 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
4032 This work was sponsored by Intel.
4035 *) Add GCM support to TLS library. Some custom code is needed to split
4036 the IV between the fixed (from PRF) and explicit (from TLS record)
4037 portions. This adds all GCM ciphersuites supported by RFC5288 and
4038 RFC5289. Generalise some AES* cipherstrings to include GCM and
4039 add a special AESGCM string for GCM only.
4042 *) Expand range of ctrls for AES GCM. Permit setting invocation
4043 field on decrypt and retrieval of invocation field only on encrypt.
4046 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
4047 As required by RFC5289 these ciphersuites cannot be used if for
4048 versions of TLS earlier than 1.2.
4051 *) For FIPS capable OpenSSL interpret a NULL default public key method
4052 as unset and return the appropriate default but do *not* set the default.
4053 This means we can return the appropriate method in applications that
4054 switch between FIPS and non-FIPS modes.
4057 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
4058 ENGINE is used then we cannot handle that in the FIPS module so we
4059 keep original code iff non-FIPS operations are allowed.
4062 *) Add -attime option to openssl utilities.
4063 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
4065 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
4068 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
4069 FIPS EC methods unconditionally for now.
4072 *) New build option no-ec2m to disable characteristic 2 code.
4075 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
4076 all cases can be covered as some introduce binary incompatibilities.
4079 *) Redirect RSA operations to FIPS module including keygen,
4080 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
4083 *) Add similar low level API blocking to ciphers.
4086 *) Low level digest APIs are not approved in FIPS mode: any attempt
4087 to use these will cause a fatal error. Applications that *really* want
4088 to use them can use the private_* version instead.
4091 *) Redirect cipher operations to FIPS module for FIPS builds.
4094 *) Redirect digest operations to FIPS module for FIPS builds.
4097 *) Update build system to add "fips" flag which will link in fipscanister.o
4098 for static and shared library builds embedding a signature if needed.
4101 *) Output TLS supported curves in preference order instead of numerical
4102 order. This is currently hardcoded for the highest order curves first.
4103 This should be configurable so applications can judge speed vs strength.
4106 *) Add TLS v1.2 server support for client authentication.
4109 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
4113 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
4114 FIPS modules versions.
4117 *) Add TLS v1.2 client side support for client authentication. Keep cache
4118 of handshake records longer as we don't know the hash algorithm to use
4119 until after the certificate request message is received.
4122 *) Initial TLS v1.2 client support. Add a default signature algorithms
4123 extension including all the algorithms we support. Parse new signature
4124 format in client key exchange. Relax some ECC signing restrictions for
4125 TLS v1.2 as indicated in RFC5246.
4128 *) Add server support for TLS v1.2 signature algorithms extension. Switch
4129 to new signature format when needed using client digest preference.
4130 All server ciphersuites should now work correctly in TLS v1.2. No client
4131 support yet and no support for client certificates.
4134 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
4135 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
4136 ciphersuites. At present only RSA key exchange ciphersuites work with
4137 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
4138 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
4139 and version checking.
4142 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
4143 with this defined it will not be affected by any changes to ssl internal
4144 structures. Add several utility functions to allow openssl application
4145 to work with OPENSSL_NO_SSL_INTERN defined.
4148 *) A long standing patch to add support for SRP from EdelWeb (Peter
4149 Sylvester and Christophe Renou) was integrated.
4150 [Christophe Renou <christophe.renou@edelweb.fr>, Peter Sylvester
4151 <peter.sylvester@edelweb.fr>, Tom Wu <tjw@cs.stanford.edu>, and
4154 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
4157 *) Permit abbreviated handshakes when renegotiating using the function
4158 SSL_renegotiate_abbreviated().
4159 [Robin Seggelmann <seggelmann@fh-muenster.de>]
4161 *) Add call to ENGINE_register_all_complete() to
4162 ENGINE_load_builtin_engines(), so some implementations get used
4163 automatically instead of needing explicit application support.
4166 *) Add support for TLS key exporter as described in RFC5705.
4167 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
4169 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
4170 a few changes are required:
4172 Add SSL_OP_NO_TLSv1_1 flag.
4173 Add TLSv1_1 methods.
4174 Update version checking logic to handle version 1.1.
4175 Add explicit IV handling (ported from DTLS code).
4176 Add command line options to s_client/s_server.
4179 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
4181 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
4182 in CMS and PKCS7 code. When RSA decryption fails use a random key for
4183 content decryption and always return the same error. Note: this attack
4184 needs on average 2^20 messages so it only affects automated senders. The
4185 old behaviour can be re-enabled in the CMS code by setting the
4186 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
4187 an MMA defence is not necessary.
4188 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
4189 this issue. (CVE-2012-0884)
4192 *) Fix CVE-2011-4619: make sure we really are receiving a
4193 client hello before rejecting multiple SGC restarts. Thanks to
4194 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
4197 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
4199 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
4200 Thanks to Antonio Martin, Enterprise Secure Access Research and
4201 Development, Cisco Systems, Inc. for discovering this bug and
4202 preparing a fix. (CVE-2012-0050)
4205 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
4207 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
4208 of the Vaudenay padding oracle attack on CBC mode encryption
4209 which enables an efficient plaintext recovery attack against
4210 the OpenSSL implementation of DTLS. Their attack exploits timing
4211 differences arising during decryption processing. A research
4212 paper describing this attack can be found at:
4213 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
4214 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
4215 Security Group at Royal Holloway, University of London
4216 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
4217 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
4218 for preparing the fix. (CVE-2011-4108)
4219 [Robin Seggelmann, Michael Tuexen]
4221 *) Clear bytes used for block padding of SSL 3.0 records.
4223 [Adam Langley (Google)]
4225 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
4226 Kadianakis <desnacked@gmail.com> for discovering this issue and
4227 Adam Langley for preparing the fix. (CVE-2011-4619)
4228 [Adam Langley (Google)]
4230 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
4231 [Andrey Kulikov <amdeich@gmail.com>]
4233 *) Prevent malformed RFC3779 data triggering an assertion failure.
4234 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
4235 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
4236 [Rob Austein <sra@hactrn.net>]
4238 *) Improved PRNG seeding for VOS.
4239 [Paul Green <Paul.Green@stratus.com>]
4241 *) Fix ssl_ciph.c set-up race.
4242 [Adam Langley (Google)]
4244 *) Fix spurious failures in ecdsatest.c.
4245 [Emilia Käsper (Google)]
4247 *) Fix the BIO_f_buffer() implementation (which was mixing different
4248 interpretations of the '..._len' fields).
4249 [Adam Langley (Google)]
4251 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
4252 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
4253 threads won't reuse the same blinding coefficients.
4255 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
4256 lock to call BN_BLINDING_invert_ex, and avoids one use of
4257 BN_BLINDING_update for each BN_BLINDING structure (previously,
4258 the last update always remained unused).
4259 [Emilia Käsper (Google)]
4261 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
4262 [Bob Buckholz (Google)]
4264 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
4266 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
4267 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
4268 [Kaspar Brand <ossl@velox.ch>]
4270 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
4271 for multi-threaded use of ECDH. (CVE-2011-3210)
4272 [Adam Langley (Google)]
4274 *) Fix x509_name_ex_d2i memory leak on bad inputs.
4277 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
4278 signature public key algorithm by using OID xref utilities instead.
4279 Before this you could only use some ECC ciphersuites with SHA1 only.
4282 *) Add protection against ECDSA timing attacks as mentioned in the paper
4283 by Billy Bob Brumley and Nicola Tuveri, see:
4285 http://eprint.iacr.org/2011/232.pdf
4287 [Billy Bob Brumley and Nicola Tuveri]
4289 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
4291 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
4292 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
4294 *) Fix bug in string printing code: if *any* escaping is enabled we must
4295 escape the escape character (backslash) or the resulting string is
4299 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
4301 *) Disable code workaround for ancient and obsolete Netscape browsers
4302 and servers: an attacker can use it in a ciphersuite downgrade attack.
4303 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
4306 *) Fixed J-PAKE implementation error, originally discovered by
4307 Sebastien Martini, further info and confirmation from Stefan
4308 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
4311 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
4313 *) Fix extension code to avoid race conditions which can result in a buffer
4314 overrun vulnerability: resumed sessions must not be modified as they can
4315 be shared by multiple threads. CVE-2010-3864
4318 *) Fix WIN32 build system to correctly link an ENGINE directory into
4322 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
4324 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
4326 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
4328 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
4330 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
4331 context. The operation can be customised via the ctrl mechanism in
4332 case ENGINEs want to include additional functionality.
4335 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
4338 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
4339 output hashes compatible with older versions of OpenSSL.
4340 [Willy Weisz <weisz@vcpc.univie.ac.at>]
4342 *) Fix compression algorithm handling: if resuming a session use the
4343 compression algorithm of the resumed session instead of determining
4344 it from client hello again. Don't allow server to change algorithm.
4347 *) Add load_crls() function to apps tidying load_certs() too. Add option
4348 to verify utility to allow additional CRLs to be included.
4351 *) Update OCSP request code to permit adding custom headers to the request:
4352 some responders need this.
4355 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
4357 [Julia Lawall <julia@diku.dk>]
4359 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
4360 needlessly dereferenced structures, used obsolete functions and
4361 didn't handle all updated verify codes correctly.
4364 *) Disable MD2 in the default configuration.
4367 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
4368 indicate the initial BIO being pushed or popped. This makes it possible
4369 to determine whether the BIO is the one explicitly called or as a result
4370 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
4371 it handles reference counts correctly and doesn't zero out the I/O bio
4372 when it is not being explicitly popped. WARNING: applications which
4373 included workarounds for the old buggy behaviour will need to be modified
4374 or they could free up already freed BIOs.
4377 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
4378 renaming to all platforms (within the 0.9.8 branch, this was
4379 done conditionally on Netware platforms to avoid a name clash).
4380 [Guenter <lists@gknw.net>]
4382 *) Add ECDHE and PSK support to DTLS.
4383 [Michael Tuexen <tuexen@fh-muenster.de>]
4385 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
4389 *) Add "missing" function EVP_MD_flags() (without this the only way to
4390 retrieve a digest flags is by accessing the structure directly. Update
4391 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
4392 or cipher is registered as in the "from" argument. Print out all
4393 registered digests in the dgst usage message instead of manually
4394 attempting to work them out.
4397 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
4398 this allows the use of compression and extensions. Change default cipher
4399 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
4400 by default unless an application cipher string requests it.
4403 *) Alter match criteria in PKCS12_parse(). It used to try to use local
4404 key ids to find matching certificates and keys but some PKCS#12 files
4405 don't follow the (somewhat unwritten) rules and this strategy fails.
4406 Now just gather all certificates together and the first private key
4407 then look for the first certificate that matches the key.
4410 *) Support use of registered digest and cipher names for dgst and cipher
4411 commands instead of having to add each one as a special case. So now
4418 openssl dgst -sha256 foo
4420 and this works for ENGINE based algorithms too.
4424 *) Update Gost ENGINE to support parameter files.
4425 [Victor B. Wagner <vitus@cryptocom.ru>]
4427 *) Support GeneralizedTime in ca utility.
4428 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
4430 *) Enhance the hash format used for certificate directory links. The new
4431 form uses the canonical encoding (meaning equivalent names will work
4432 even if they aren't identical) and uses SHA1 instead of MD5. This form
4433 is incompatible with the older format and as a result c_rehash should
4434 be used to rebuild symbolic links.
4437 *) Make PKCS#8 the default write format for private keys, replacing the
4438 traditional format. This form is standardised, more secure and doesn't
4439 include an implicit MD5 dependency.
4442 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
4443 committed to OpenSSL should pass this lot as a minimum.
4446 *) Add session ticket override functionality for use by EAP-FAST.
4447 [Jouni Malinen <j@w1.fi>]
4449 *) Modify HMAC functions to return a value. Since these can be implemented
4450 in an ENGINE errors can occur.
4453 *) Type-checked OBJ_bsearch_ex.
4456 *) Type-checked OBJ_bsearch. Also some constification necessitated
4457 by type-checking. Still to come: TXT_DB, bsearch(?),
4458 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
4462 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
4463 seconds to a tm structure directly, instead of going through OS
4464 specific date routines. This avoids any issues with OS routines such
4465 as the year 2038 bug. New *_adj() functions for ASN1 time structures
4466 and X509_time_adj_ex() to cover the extended range. The existing
4467 X509_time_adj() is still usable and will no longer have any date issues.
4470 *) Delta CRL support. New use deltas option which will attempt to locate
4471 and search any appropriate delta CRLs available.
4473 This work was sponsored by Google.
4476 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
4477 code and add additional score elements. Validate alternate CRL paths
4478 as part of the CRL checking and indicate a new error "CRL path validation
4479 error" in this case. Applications wanting additional details can use
4480 the verify callback and check the new "parent" field. If this is not
4481 NULL CRL path validation is taking place. Existing applications won't
4482 see this because it requires extended CRL support which is off by
4485 This work was sponsored by Google.
4488 *) Support for freshest CRL extension.
4490 This work was sponsored by Google.
4493 *) Initial indirect CRL support. Currently only supported in the CRLs
4494 passed directly and not via lookup. Process certificate issuer
4495 CRL entry extension and lookup CRL entries by bother issuer name
4496 and serial number. Check and process CRL issuer entry in IDP extension.
4498 This work was sponsored by Google.
4501 *) Add support for distinct certificate and CRL paths. The CRL issuer
4502 certificate is validated separately in this case. Only enabled if
4503 an extended CRL support flag is set: this flag will enable additional
4504 CRL functionality in future.
4506 This work was sponsored by Google.
4509 *) Add support for policy mappings extension.
4511 This work was sponsored by Google.
4514 *) Fixes to pathlength constraint, self issued certificate handling,
4515 policy processing to align with RFC3280 and PKITS tests.
4517 This work was sponsored by Google.
4520 *) Support for name constraints certificate extension. DN, email, DNS
4521 and URI types are currently supported.
4523 This work was sponsored by Google.
4526 *) To cater for systems that provide a pointer-based thread ID rather
4527 than numeric, deprecate the current numeric thread ID mechanism and
4528 replace it with a structure and associated callback type. This
4529 mechanism allows a numeric "hash" to be extracted from a thread ID in
4530 either case, and on platforms where pointers are larger than 'long',
4531 mixing is done to help ensure the numeric 'hash' is usable even if it
4532 can't be guaranteed unique. The default mechanism is to use "&errno"
4533 as a pointer-based thread ID to distinguish between threads.
4535 Applications that want to provide their own thread IDs should now use
4536 CRYPTO_THREADID_set_callback() to register a callback that will call
4537 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
4539 Note that ERR_remove_state() is now deprecated, because it is tied
4540 to the assumption that thread IDs are numeric. ERR_remove_state(0)
4541 to free the current thread's error state should be replaced by
4542 ERR_remove_thread_state(NULL).
4544 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
4545 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
4546 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
4547 application was previously providing a numeric thread callback that
4548 was inappropriate for distinguishing threads, then uniqueness might
4549 have been obtained with &errno that happened immediately in the
4550 intermediate development versions of OpenSSL; this is no longer the
4551 case, the numeric thread callback will now override the automatic use
4553 [Geoff Thorpe, with help from Bodo Moeller]
4555 *) Initial support for different CRL issuing certificates. This covers a
4556 simple case where the self issued certificates in the chain exist and
4557 the real CRL issuer is higher in the existing chain.
4559 This work was sponsored by Google.
4562 *) Removed effectively defunct crypto/store from the build.
4565 *) Revamp of STACK to provide stronger type-checking. Still to come:
4566 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
4567 ASN1_STRING, CONF_VALUE.
4570 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
4571 RAM on SSL connections. This option can save about 34k per idle SSL.
4574 *) Revamp of LHASH to provide stronger type-checking. Still to come:
4575 STACK, TXT_DB, bsearch, qsort.
4578 *) Initial support for Cryptographic Message Syntax (aka CMS) based
4579 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
4580 support for data, signedData, compressedData, digestedData and
4581 encryptedData, envelopedData types included. Scripts to check against
4582 RFC4134 examples draft and interop and consistency checks of many
4583 content types and variants.
4586 *) Add options to enc utility to support use of zlib compression BIO.
4589 *) Extend mk1mf to support importing of options and assembly language
4590 files from Configure script, currently only included in VC-WIN32.
4591 The assembly language rules can now optionally generate the source
4592 files from the associated perl scripts.
4595 *) Implement remaining functionality needed to support GOST ciphersuites.
4596 Interop testing has been performed using CryptoPro implementations.
4597 [Victor B. Wagner <vitus@cryptocom.ru>]
4599 *) s390x assembler pack.
4602 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
4606 *) Implement Opaque PRF Input TLS extension as specified in
4607 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
4608 official specification yet and no extension type assignment by
4609 IANA exists, this extension (for now) will have to be explicitly
4610 enabled when building OpenSSL by providing the extension number
4611 to use. For example, specify an option
4613 -DTLSEXT_TYPE_opaque_prf_input=0x9527
4615 to the "config" or "Configure" script to enable the extension,
4616 assuming extension number 0x9527 (which is a completely arbitrary
4617 and unofficial assignment based on the MD5 hash of the Internet
4618 Draft). Note that by doing so, you potentially lose
4619 interoperability with other TLS implementations since these might
4620 be using the same extension number for other purposes.
4622 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
4623 opaque PRF input value to use in the handshake. This will create
4624 an internal copy of the length-'len' string at 'src', and will
4625 return non-zero for success.
4627 To get more control and flexibility, provide a callback function
4630 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
4631 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
4635 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
4638 Callback function 'cb' will be called in handshakes, and is
4639 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
4640 Argument 'arg' is for application purposes (the value as given to
4641 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
4642 be provided to the callback function). The callback function
4643 has to return non-zero to report success: usually 1 to use opaque
4644 PRF input just if possible, or 2 to enforce use of the opaque PRF
4645 input. In the latter case, the library will abort the handshake
4646 if opaque PRF input is not successfully negotiated.
4648 Arguments 'peerinput' and 'len' given to the callback function
4649 will always be NULL and 0 in the case of a client. A server will
4650 see the client's opaque PRF input through these variables if
4651 available (NULL and 0 otherwise). Note that if the server
4652 provides an opaque PRF input, the length must be the same as the
4653 length of the client's opaque PRF input.
4655 Note that the callback function will only be called when creating
4656 a new session (session resumption can resume whatever was
4657 previously negotiated), and will not be called in SSL 2.0
4658 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
4659 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
4660 for applications that need to enforce opaque PRF input.
4664 *) Update ssl code to support digests other than SHA1+MD5 for handshake
4667 [Victor B. Wagner <vitus@cryptocom.ru>]
4669 *) Add RFC4507 support to OpenSSL. This includes the corrections in
4670 RFC4507bis. The encrypted ticket format is an encrypted encoded
4671 SSL_SESSION structure, that way new session features are automatically
4674 If a client application caches session in an SSL_SESSION structure
4675 support is transparent because tickets are now stored in the encoded
4678 The SSL_CTX structure automatically generates keys for ticket
4679 protection in servers so again support should be possible
4680 with no application modification.
4682 If a client or server wishes to disable RFC4507 support then the option
4683 SSL_OP_NO_TICKET can be set.
4685 Add a TLS extension debugging callback to allow the contents of any client
4686 or server extensions to be examined.
4688 This work was sponsored by Google.
4691 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
4692 OpenSSL should now compile cleanly on gcc 4.2
4693 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
4695 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
4696 support including streaming MAC support: this is required for GOST
4697 ciphersuite support.
4698 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
4700 *) Add option -stream to use PKCS#7 streaming in smime utility. New
4701 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
4702 to output in BER and PEM format.
4705 *) Experimental support for use of HMAC via EVP_PKEY interface. This
4706 allows HMAC to be handled via the EVP_DigestSign*() interface. The
4707 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
4708 ENGINE support for HMAC keys which are unextractable. New -mac and
4709 -macopt options to dgst utility.
4712 *) New option -sigopt to dgst utility. Update dgst to use
4713 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
4714 alternative signing parameters such as X9.31 or PSS in the dgst
4718 *) Change ssl_cipher_apply_rule(), the internal function that does
4719 the work each time a ciphersuite string requests enabling
4720 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
4721 removing ("!foo+bar") a class of ciphersuites: Now it maintains
4722 the order of disabled ciphersuites such that those ciphersuites
4723 that most recently went from enabled to disabled not only stay
4724 in order with respect to each other, but also have higher priority
4725 than other disabled ciphersuites the next time ciphersuites are
4728 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
4729 the same ciphersuites as with "HIGH" alone, but in a specific
4730 order where the PSK ciphersuites come first (since they are the
4731 most recently disabled ciphersuites when "HIGH" is parsed).
4733 Also, change ssl_create_cipher_list() (using this new
4734 functionality) such that between otherwise identical
4735 ciphersuites, ephemeral ECDH is preferred over ephemeral DH in
4739 *) Change ssl_create_cipher_list() so that it automatically
4740 arranges the ciphersuites in reasonable order before starting
4741 to process the rule string. Thus, the definition for "DEFAULT"
4742 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
4743 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
4744 This makes it much easier to arrive at a reasonable default order
4745 in applications for which anonymous ciphers are OK (meaning
4746 that you can't actually use DEFAULT).
4747 [Bodo Moeller; suggested by Victor Duchovni]
4749 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
4750 processing) into multiple integers instead of setting
4751 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
4752 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
4753 (These masks as well as the individual bit definitions are hidden
4754 away into the non-exported interface ssl/ssl_locl.h, so this
4755 change to the definition of the SSL_CIPHER structure shouldn't
4756 affect applications.) This give us more bits for each of these
4757 categories, so there is no longer a need to coagulate AES128 and
4758 AES256 into a single algorithm bit, and to coagulate Camellia128
4759 and Camellia256 into a single algorithm bit, which has led to all
4762 Thus, among other things, the kludge introduced in 0.9.7m and
4763 0.9.8e for masking out AES256 independently of AES128 or masking
4764 out Camellia256 independently of AES256 is not needed here in 0.9.9.
4766 With the change, we also introduce new ciphersuite aliases that
4767 so far were missing: "AES128", "AES256", "CAMELLIA128", and
4771 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
4772 Use the leftmost N bytes of the signature input if the input is
4773 larger than the prime q (with N being the size in bytes of q).
4776 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
4777 it yet and it is largely untested.
4780 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
4783 *) Initial incomplete changes to avoid need for function casts in OpenSSL
4784 some compilers (gcc 4.2 and later) reject their use. Safestack is
4785 reimplemented. Update ASN1 to avoid use of legacy functions.
4788 *) Win32/64 targets are linked with Winsock2.
4791 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
4792 to external functions. This can be used to increase CRL handling
4793 efficiency especially when CRLs are very large by (for example) storing
4794 the CRL revoked certificates in a database.
4797 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
4798 new CRLs added to a directory can be used. New command line option
4799 -verify_return_error to s_client and s_server. This causes real errors
4800 to be returned by the verify callback instead of carrying on no matter
4801 what. This reflects the way a "real world" verify callback would behave.
4804 *) GOST engine, supporting several GOST algorithms and public key formats.
4805 Kindly donated by Cryptocom.
4808 *) Partial support for Issuing Distribution Point CRL extension. CRLs
4809 partitioned by DP are handled but no indirect CRL or reason partitioning
4810 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
4811 selected via a scoring technique which handles IDP and AKID in CRLs.
4814 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
4815 will ultimately be used for all verify operations: this will remove the
4816 X509_STORE dependency on certificate verification and allow alternative
4817 lookup methods. X509_STORE based implementations of these two callbacks.
4820 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
4821 Modify get_crl() to find a valid (unexpired) CRL if possible.
4824 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
4825 this would be called X509_CRL_cmp() but that name is already used by
4826 a function that just compares CRL issuer names. Cache several CRL
4827 extensions in X509_CRL structure and cache CRLDP in X509.
4830 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
4831 this maps equivalent X509_NAME structures into a consistent structure.
4832 Name comparison can then be performed rapidly using memcmp().
4835 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
4839 *) Allow digests to supply their own micalg string for S/MIME type using
4840 the ctrl EVP_MD_CTRL_MICALG.
4843 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
4844 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
4845 ctrl. It can then customise the structure before and/or after signing
4849 *) New function OBJ_add_sigid() to allow application defined signature OIDs
4850 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
4851 to free up any added signature OIDs.
4854 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
4855 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
4856 digest and cipher tables. New options added to openssl utility:
4857 list-message-digest-algorithms and list-cipher-algorithms.
4860 *) Change the array representation of binary polynomials: the list
4861 of degrees of non-zero coefficients is now terminated with -1.
4862 Previously it was terminated with 0, which was also part of the
4863 value; thus, the array representation was not applicable to
4864 polynomials where t^0 has coefficient zero. This change makes
4865 the array representation useful in a more general context.
4868 *) Various modifications and fixes to SSL/TLS cipher string
4869 handling. For ECC, the code now distinguishes between fixed ECDH
4870 with RSA certificates on the one hand and with ECDSA certificates
4871 on the other hand, since these are separate ciphersuites. The
4872 unused code for Fortezza ciphersuites has been removed.
4874 For consistency with EDH, ephemeral ECDH is now called "EECDH"
4875 (not "ECDHE"). For consistency with the code for DH
4876 certificates, use of ECDH certificates is now considered ECDH
4877 authentication, not RSA or ECDSA authentication (the latter is
4878 merely the CA's signing algorithm and not actively used in the
4881 The temporary ciphersuite alias "ECCdraft" is no longer
4882 available, and ECC ciphersuites are no longer excluded from "ALL"
4883 and "DEFAULT". The following aliases now exist for RFC 4492
4884 ciphersuites, most of these by analogy with the DH case:
4886 kECDHr - ECDH cert, signed with RSA
4887 kECDHe - ECDH cert, signed with ECDSA
4888 kECDH - ECDH cert (signed with either RSA or ECDSA)
4889 kEECDH - ephemeral ECDH
4890 ECDH - ECDH cert or ephemeral ECDH
4896 AECDH - anonymous ECDH
4897 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
4901 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
4902 Use correct micalg parameters depending on digest(s) in signed message.
4905 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
4906 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
4909 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
4910 an engine to register a method. Add ENGINE lookups for methods and
4911 functional reference processing.
4914 *) New functions EVP_Digest{Sign,Verify)*. These are enhanced versions of
4915 EVP_{Sign,Verify}* which allow an application to customise the signature
4919 *) New -resign option to smime utility. This adds one or more signers
4920 to an existing PKCS#7 signedData structure. Also -md option to use an
4921 alternative message digest algorithm for signing.
4924 *) Tidy up PKCS#7 routines and add new functions to make it easier to
4925 create PKCS7 structures containing multiple signers. Update smime
4926 application to support multiple signers.
4929 *) New -macalg option to pkcs12 utility to allow setting of an alternative
4933 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
4934 Reorganize PBE internals to lookup from a static table using NIDs,
4935 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
4936 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
4937 PRF which will be automatically used with PBES2.
4940 *) Replace the algorithm specific calls to generate keys in "req" with the
4944 *) Update PKCS#7 enveloped data routines to use new API. This is now
4945 supported by any public key method supporting the encrypt operation. A
4946 ctrl is added to allow the public key algorithm to examine or modify
4947 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
4951 *) Add a ctrl to asn1 method to allow a public key algorithm to express
4952 a default digest type to use. In most cases this will be SHA1 but some
4953 algorithms (such as GOST) need to specify an alternative digest. The
4954 return value indicates how strong the preference is 1 means optional and
4955 2 is mandatory (that is it is the only supported type). Modify
4956 ASN1_item_sign() to accept a NULL digest argument to indicate it should
4957 use the default md. Update openssl utilities to use the default digest
4958 type for signing if it is not explicitly indicated.
4961 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
4962 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
4963 signing method from the key type. This effectively removes the link
4964 between digests and public key types.
4967 *) Add an OID cross reference table and utility functions. Its purpose is to
4968 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
4969 rsaEncryption. This will allow some of the algorithm specific hackery
4970 needed to use the correct OID to be removed.
4973 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
4974 structures for PKCS7_sign(). They are now set up by the relevant public
4978 *) Add provisional EC pkey method with support for ECDSA and ECDH.
4981 *) Add support for key derivation (agreement) in the API, DH method and
4985 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
4986 public and private key formats. As a side effect these add additional
4987 command line functionality not previously available: DSA signatures can be
4988 generated and verified using pkeyutl and DH key support and generation in
4993 [Oliver Tappe <zooey@hirschkaefer.de>]
4995 *) New make target "install_html_docs" installs HTML renditions of the
4997 [Oliver Tappe <zooey@hirschkaefer.de>]
4999 *) New utility "genpkey" this is analogous to "genrsa" etc except it can
5000 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
5001 support key and parameter generation and add initial key generation
5002 functionality for RSA.
5005 *) Add functions for main EVP_PKEY_method operations. The undocumented
5006 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
5007 EVP_PKEY_{encrypt,decrypt}_old.
5010 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
5011 key API, doesn't do much yet.
5014 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
5015 public key algorithms. New option to openssl utility:
5016 "list-public-key-algorithms" to print out info.
5019 *) Implement the Supported Elliptic Curves Extension for
5020 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
5023 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
5024 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
5027 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
5028 utilities such as rsa, dsa, dsaparam etc except they process any key
5032 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
5033 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
5034 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
5038 *) Initial support for pluggable public key ASN1.
5039 De-spaghettify the public key ASN1 handling. Move public and private
5040 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
5041 algorithm specific handling to a single module within the relevant
5042 algorithm directory. Add functions to allow (near) opaque processing
5043 of public and private key structures.
5046 *) Implement the Supported Point Formats Extension for
5047 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
5050 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
5051 for the psk identity [hint] and the psk callback functions to the
5052 SSL_SESSION, SSL and SSL_CTX structure.
5055 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
5059 SSL_CTX_use_psk_identity_hint
5060 SSL_get_psk_identity_hint
5061 SSL_get_psk_identity
5062 SSL_use_psk_identity_hint
5064 [Mika Kousa and Pasi Eronen of Nokia Corporation]
5066 *) Add RFC 3161 compliant time stamp request creation, response generation
5067 and response verification functionality.
5068 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
5070 *) Add initial support for TLS extensions, specifically for the server_name
5071 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
5072 have new members for a host name. The SSL data structure has an
5073 additional member SSL_CTX *initial_ctx so that new sessions can be
5074 stored in that context to allow for session resumption, even after the
5075 SSL has been switched to a new SSL_CTX in reaction to a client's
5076 server_name extension.
5078 New functions (subject to change):
5080 SSL_get_servername()
5081 SSL_get_servername_type()
5084 New CTRL codes and macros (subject to change):
5086 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
5087 - SSL_CTX_set_tlsext_servername_callback()
5088 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
5089 - SSL_CTX_set_tlsext_servername_arg()
5090 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
5092 openssl s_client has a new '-servername ...' option.
5094 openssl s_server has new options '-servername_host ...', '-cert2 ...',
5095 '-key2 ...', '-servername_fatal' (subject to change). This allows
5096 testing the HostName extension for a specific single host name ('-cert'
5097 and '-key' remain fallbacks for handshakes without HostName
5098 negotiation). If the unrecognized_name alert has to be sent, this by
5099 default is a warning; it becomes fatal with the '-servername_fatal'
5102 [Peter Sylvester, Remy Allais, Christophe Renou]
5104 *) Whirlpool hash implementation is added.
5107 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
5108 bn(64,32). Because of instruction set limitations it doesn't have
5109 any negative impact on performance. This was done mostly in order
5110 to make it possible to share assembler modules, such as bn_mul_mont
5111 implementations, between 32- and 64-bit builds without hassle.
5114 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
5115 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
5119 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
5120 dedicated Montgomery multiplication procedure, is introduced.
5121 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
5122 "64-bit" performance on certain 32-bit targets.
5125 *) New option SSL_OP_NO_COMP to disable use of compression selectively
5126 in SSL structures. New SSL ctrl to set maximum send fragment size.
5127 Save memory by setting the I/O buffer sizes dynamically instead of
5128 using the maximum available value.
5131 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
5132 in addition to the text details.
5135 *) Very, very preliminary EXPERIMENTAL support for printing of general
5136 ASN1 structures. This currently produces rather ugly output and doesn't
5137 handle several customised structures at all.
5140 *) Integrated support for PVK file format and some related formats such
5141 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
5142 these in the 'rsa' and 'dsa' utilities.
5145 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
5148 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
5149 place for the (very old) "NETSCAPE" format certificates which are now
5150 handled using new ASN1 code equivalents.
5153 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
5154 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
5155 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
5158 *) Modify CRL distribution points extension code to print out previously
5159 unsupported fields. Enhance extension setting code to allow setting of
5163 *) Add print and set support for Issuing Distribution Point CRL extension.
5166 *) Change 'Configure' script to enable Camellia by default.
5169 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
5171 *) When rejecting SSL/TLS records due to an incorrect version number, never
5172 update s->server with a new major version number. As of
5173 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
5174 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
5175 the previous behavior could result in a read attempt at NULL when
5176 receiving specific incorrect SSL/TLS records once record payload
5177 protection is active. (CVE-2010-0740)
5178 [Bodo Moeller, Adam Langley <agl@chromium.org>]
5180 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
5181 could be crashed if the relevant tables were not present (e.g. chrooted).
5182 [Tomas Hoger <thoger@redhat.com>]
5184 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
5186 *) Always check bn_wexpand() return values for failure. (CVE-2009-3245)
5187 [Martin Olsson, Neel Mehta]
5189 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
5190 accommodate for stack sorting, always a write lock!).
5193 *) On some versions of WIN32 Heap32Next is very slow. This can cause
5194 excessive delays in the RAND_poll(): over a minute. As a workaround
5195 include a time check in the inner Heap32Next loop too.
5198 *) The code that handled flushing of data in SSL/TLS originally used the
5199 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
5200 the problem outlined in PR#1949. The fix suggested there however can
5201 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
5202 of Apache). So instead simplify the code to flush unconditionally.
5203 This should be fine since flushing with no data to flush is a no op.
5206 *) Handle TLS versions 2.0 and later properly and correctly use the
5207 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
5208 off ancient servers have a habit of sticking around for a while...
5211 *) Modify compression code so it frees up structures without using the
5212 ex_data callbacks. This works around a problem where some applications
5213 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
5214 restarting) then use compression (e.g. SSL with compression) later.
5215 This results in significant per-connection memory leaks and
5216 has caused some security issues including CVE-2008-1678 and
5220 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
5221 change when encrypting or decrypting.
5224 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
5225 connect and renegotiate with servers which do not support RI.
5226 Until RI is more widely deployed this option is enabled by default.
5229 *) Add "missing" ssl ctrls to clear options and mode.
5232 *) If client attempts to renegotiate and doesn't support RI respond with
5233 a no_renegotiation alert as required by RFC5746. Some renegotiating
5234 TLS clients will continue a connection gracefully when they receive
5235 the alert. Unfortunately OpenSSL mishandled this alert and would hang
5236 waiting for a server hello which it will never receive. Now we treat a
5237 received no_renegotiation alert as a fatal error. This is because
5238 applications requesting a renegotiation might well expect it to succeed
5239 and would have no code in place to handle the server denying it so the
5240 only safe thing to do is to terminate the connection.
5243 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
5244 peer supports secure renegotiation and 0 otherwise. Print out peer
5245 renegotiation support in s_client/s_server.
5248 *) Replace the highly broken and deprecated SPKAC certification method with
5249 the updated NID creation version. This should correctly handle UTF8.
5252 *) Implement RFC5746. Re-enable renegotiation but require the extension
5253 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
5254 turns out to be a bad idea. It has been replaced by
5255 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
5256 SSL_CTX_set_options(). This is really not recommended unless you
5257 know what you are doing.
5258 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
5260 *) Fixes to stateless session resumption handling. Use initial_ctx when
5261 issuing and attempting to decrypt tickets in case it has changed during
5262 servername handling. Use a non-zero length session ID when attempting
5263 stateless session resumption: this makes it possible to determine if
5264 a resumption has occurred immediately after receiving server hello
5265 (several places in OpenSSL subtly assume this) instead of later in
5269 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
5270 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
5271 fixes for a few places where the return code is not checked
5273 [Julia Lawall <julia@diku.dk>]
5275 *) Add --strict-warnings option to Configure script to include devteam
5276 warnings in other configurations.
5279 *) Add support for --libdir option and LIBDIR variable in makefiles. This
5280 makes it possible to install openssl libraries in locations which
5281 have names other than "lib", for example "/usr/lib64" which some
5283 [Steve Henson, based on patch from Jeremy Utley]
5285 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
5286 X690 8.9.12 and can produce some misleading textual output of OIDs.
5287 [Steve Henson, reported by Dan Kaminsky]
5289 *) Delete MD2 from algorithm tables. This follows the recommendation in
5290 several standards that it is not used in new applications due to
5291 several cryptographic weaknesses. For binary compatibility reasons
5292 the MD2 API is still compiled in by default.
5295 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
5299 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
5300 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
5302 [Guenter <lists@gknw.net>]
5304 *) Fix the server certificate chain building code to use X509_verify_cert(),
5305 it used to have an ad-hoc builder which was unable to cope with anything
5306 other than a simple chain.
5307 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
5309 *) Don't check self signed certificate signatures in X509_verify_cert()
5310 by default (a flag can override this): it just wastes time without
5311 adding any security. As a useful side effect self signed root CAs
5312 with non-FIPS digests are now usable in FIPS mode.
5315 *) In dtls1_process_out_of_seq_message() the check if the current message
5316 is already buffered was missing. For every new message was memory
5317 allocated, allowing an attacker to perform an denial of service attack
5318 with sending out of seq handshake messages until there is no memory
5319 left. Additionally every future message was buffered, even if the
5320 sequence number made no sense and would be part of another handshake.
5321 So only messages with sequence numbers less than 10 in advance will be
5322 buffered. (CVE-2009-1378)
5323 [Robin Seggelmann, discovered by Daniel Mentz]
5325 *) Records are buffered if they arrive with a future epoch to be
5326 processed after finishing the corresponding handshake. There is
5327 currently no limitation to this buffer allowing an attacker to perform
5328 a DOS attack with sending records with future epochs until there is no
5329 memory left. This patch adds the pqueue_size() function to determine
5330 the size of a buffer and limits the record buffer to 100 entries.
5332 [Robin Seggelmann, discovered by Daniel Mentz]
5334 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
5335 parent structure is freed. (CVE-2009-1379)
5338 *) Handle non-blocking I/O properly in SSL_shutdown() call.
5339 [Darryl Miles <darryl-mailinglists@netbauds.net>]
5342 [Ilya O. <vrghost@gmail.com>]
5344 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
5346 *) Disable renegotiation completely - this fixes a severe security
5347 problem (CVE-2009-3555) at the cost of breaking all
5348 renegotiation. Renegotiation can be re-enabled by setting
5349 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
5350 run-time. This is really not recommended unless you know what
5354 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
5356 *) Don't set val to NULL when freeing up structures, it is freed up by
5357 underlying code. If sizeof(void *) > sizeof(long) this can result in
5358 zeroing past the valid field. (CVE-2009-0789)
5359 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
5361 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
5362 checked correctly. This would allow some invalid signed attributes to
5363 appear to verify correctly. (CVE-2009-0591)
5364 [Ivan Nestlerode <inestlerode@us.ibm.com>]
5366 *) Reject UniversalString and BMPString types with invalid lengths. This
5367 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
5368 a legal length. (CVE-2009-0590)
5371 *) Set S/MIME signing as the default purpose rather than setting it
5372 unconditionally. This allows applications to override it at the store
5376 *) Permit restricted recursion of ASN1 strings. This is needed in practice
5377 to handle some structures.
5380 *) Improve efficiency of mem_gets: don't search whole buffer each time
5382 [Jeremy Shapiro <jnshapir@us.ibm.com>]
5384 *) New -hex option for openssl rand.
5387 *) Print out UTF8String and NumericString when parsing ASN1.
5390 *) Support NumericString type for name components.
5393 *) Allow CC in the environment to override the automatically chosen
5394 compiler. Note that nothing is done to ensure flags work with the
5398 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
5400 *) Properly check EVP_VerifyFinal() and similar return values
5402 [Ben Laurie, Bodo Moeller, Google Security Team]
5404 *) Enable TLS extensions by default.
5407 *) Allow the CHIL engine to be loaded, whether the application is
5408 multithreaded or not. (This does not release the developer from the
5409 obligation to set up the dynamic locking callbacks.)
5410 [Sander Temme <sander@temme.net>]
5412 *) Use correct exit code if there is an error in dgst command.
5413 [Steve Henson; problem pointed out by Roland Dirlewanger]
5415 *) Tweak Configure so that you need to say "experimental-jpake" to enable
5416 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
5419 *) Add experimental JPAKE support, including demo authentication in
5420 s_client and s_server.
5423 *) Set the comparison function in v3_addr_canonize().
5424 [Rob Austein <sra@hactrn.net>]
5426 *) Add support for XMPP STARTTLS in s_client.
5427 [Philip Paeps <philip@freebsd.org>]
5429 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
5430 to ensure that even with this option, only ciphersuites in the
5431 server's preference list will be accepted. (Note that the option
5432 applies only when resuming a session, so the earlier behavior was
5433 just about the algorithm choice for symmetric cryptography.)
5436 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
5438 *) Fix NULL pointer dereference if a DTLS server received
5439 ChangeCipherSpec as first record (CVE-2009-1386).
5442 *) Fix a state transition in s3_srvr.c and d1_srvr.c
5443 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
5446 *) The fix in 0.9.8c that supposedly got rid of unsafe
5447 double-checked locking was incomplete for RSA blinding,
5448 addressing just one layer of what turns out to have been
5449 doubly unsafe triple-checked locking.
5451 So now fix this for real by retiring the MONT_HELPER macro
5452 in crypto/rsa/rsa_eay.c.
5454 [Bodo Moeller; problem pointed out by Marius Schilder]
5456 *) Various precautionary measures:
5458 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
5460 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
5461 (NB: This would require knowledge of the secret session ticket key
5462 to exploit, in which case you'd be SOL either way.)
5464 - Change bn_nist.c so that it will properly handle input BIGNUMs
5465 outside the expected range.
5467 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
5470 [Neel Mehta, Bodo Moeller]
5472 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
5473 the load fails. Useful for distros.
5474 [Ben Laurie and the FreeBSD team]
5476 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
5479 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
5482 *) Expand ENGINE to support engine supplied SSL client certificate functions.
5484 This work was sponsored by Logica.
5487 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
5488 keystores. Support for SSL/TLS client authentication too.
5489 Not compiled unless enable-capieng specified to Configure.
5491 This work was sponsored by Logica.
5494 *) Fix bug in X509_ATTRIBUTE creation: don't set attribute using
5495 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
5496 attribute creation routines such as certificate requests and PKCS#12
5500 Changes between 0.9.8g and 0.9.8h [28 May 2008]
5502 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
5503 handshake which could lead to a client crash as found using the
5504 Codenomicon TLS test suite (CVE-2008-1672)
5505 [Steve Henson, Mark Cox]
5507 *) Fix double free in TLS server name extensions which could lead to
5508 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
5511 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
5513 Clear the error queue to ensure that error entries left from
5514 older function calls do not interfere with the correct operation.
5515 [Lutz Jaenicke, Erik de Castro Lopo]
5517 *) Remove root CA certificates of commercial CAs:
5519 The OpenSSL project does not recommend any specific CA and does not
5520 have any policy with respect to including or excluding any CA.
5521 Therefore it does not make any sense to ship an arbitrary selection
5522 of root CA certificates with the OpenSSL software.
5525 *) RSA OAEP patches to fix two separate invalid memory reads.
5526 The first one involves inputs when 'lzero' is greater than
5527 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
5528 before the beginning of from). The second one involves inputs where
5529 the 'db' section contains nothing but zeroes (there is a one-byte
5530 invalid read after the end of 'db').
5531 [Ivan Nestlerode <inestlerode@us.ibm.com>]
5533 *) Partial backport from 0.9.9-dev:
5535 Introduce bn_mul_mont (dedicated Montgomery multiplication
5536 procedure) as a candidate for BIGNUM assembler implementation.
5537 While 0.9.9-dev uses assembler for various architectures, only
5538 x86_64 is available by default here in the 0.9.8 branch, and
5539 32-bit x86 is available through a compile-time setting.
5541 To try the 32-bit x86 assembler implementation, use Configure
5542 option "enable-montasm" (which exists only for this backport).
5544 As "enable-montasm" for 32-bit x86 disclaims code stability
5545 anyway, in this constellation we activate additional code
5546 backported from 0.9.9-dev for further performance improvements,
5547 namely BN_from_montgomery_word. (To enable this otherwise,
5548 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
5550 [Andy Polyakov (backport partially by Bodo Moeller)]
5552 *) Add TLS session ticket callback. This allows an application to set
5553 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
5554 values. This is useful for key rollover for example where several key
5555 sets may exist with different names.
5558 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
5559 This was broken until now in 0.9.8 releases, such that the only way
5560 a registered ENGINE could be used (assuming it initialises
5561 successfully on the host) was to explicitly set it as the default
5562 for the relevant algorithms. This is in contradiction with 0.9.7
5563 behaviour and the documentation. With this fix, when an ENGINE is
5564 registered into a given algorithm's table of implementations, the
5565 'uptodate' flag is reset so that auto-discovery will be used next
5566 time a new context for that algorithm attempts to select an
5568 [Ian Lister (tweaked by Geoff Thorpe)]
5570 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
5571 implementation in the following ways:
5573 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
5576 Lack of BER streaming support means one pass streaming processing is
5577 only supported if data is detached: setting the streaming flag is
5578 ignored for embedded content.
5580 CMS support is disabled by default and must be explicitly enabled
5581 with the enable-cms configuration option.
5584 *) Update the GMP engine glue to do direct copies between BIGNUM and
5585 mpz_t when openssl and GMP use the same limb size. Otherwise the
5586 existing "conversion via a text string export" trick is still used.
5587 [Paul Sheer <paulsheer@gmail.com>]
5589 *) Zlib compression BIO. This is a filter BIO which compressed and
5590 uncompresses any data passed through it.
5593 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
5594 RFC3394 compatible AES key wrapping.
5597 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
5598 sets string data without copying. X509_ALGOR_set0() and
5599 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
5600 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
5601 from an X509_ATTRIBUTE structure optionally checking it occurs only
5602 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
5606 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
5607 to get the expected BN_FLG_CONSTTIME behavior.
5608 [Bodo Moeller (Google)]
5612 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
5613 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
5614 - added some more tests to do_tests.pl
5615 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
5616 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
5617 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
5618 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
5619 - various changes to netware.pl to enable gcc-cross builds on Win32
5621 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
5622 - various changes to fix missing prototype warnings
5623 - fixed x86nasm.pl to create correct asm files for NASM COFF output
5624 - added AES, WHIRLPOOL and CPUID assembler code to build files
5625 - added missing AES assembler make rules to mk1mf.pl
5626 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
5627 [Guenter Knauf <eflash@gmx.net>]
5629 *) Implement certificate status request TLS extension defined in RFC3546.
5630 A client can set the appropriate parameters and receive the encoded
5631 OCSP response via a callback. A server can query the supplied parameters
5632 and set the encoded OCSP response in the callback. Add simplified examples
5633 to s_client and s_server.
5636 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
5638 *) Fix various bugs:
5639 + Binary incompatibility of ssl_ctx_st structure
5640 + DTLS interoperation with non-compliant servers
5641 + Don't call get_session_cb() without proposed session
5642 + Fix ia64 assembler code
5643 [Andy Polyakov, Steve Henson]
5645 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
5647 *) DTLS Handshake overhaul. There were longstanding issues with
5648 OpenSSL DTLS implementation, which were making it impossible for
5649 RFC 4347 compliant client to communicate with OpenSSL server.
5650 Unfortunately just fixing these incompatibilities would "cut off"
5651 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
5652 server keeps tolerating non RFC compliant syntax. The opposite is
5653 not true, 0.9.8f client can not communicate with earlier server.
5654 This update even addresses CVE-2007-4995.
5657 *) Changes to avoid need for function casts in OpenSSL: some compilers
5658 (gcc 4.2 and later) reject their use.
5659 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
5662 *) Add RFC4507 support to OpenSSL. This includes the corrections in
5663 RFC4507bis. The encrypted ticket format is an encrypted encoded
5664 SSL_SESSION structure, that way new session features are automatically
5667 If a client application caches session in an SSL_SESSION structure
5668 support is transparent because tickets are now stored in the encoded
5671 The SSL_CTX structure automatically generates keys for ticket
5672 protection in servers so again support should be possible
5673 with no application modification.
5675 If a client or server wishes to disable RFC4507 support then the option
5676 SSL_OP_NO_TICKET can be set.
5678 Add a TLS extension debugging callback to allow the contents of any client
5679 or server extensions to be examined.
5681 This work was sponsored by Google.
5684 *) Add initial support for TLS extensions, specifically for the server_name
5685 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
5686 have new members for a host name. The SSL data structure has an
5687 additional member SSL_CTX *initial_ctx so that new sessions can be
5688 stored in that context to allow for session resumption, even after the
5689 SSL has been switched to a new SSL_CTX in reaction to a client's
5690 server_name extension.
5692 New functions (subject to change):
5694 SSL_get_servername()
5695 SSL_get_servername_type()
5698 New CTRL codes and macros (subject to change):
5700 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
5701 - SSL_CTX_set_tlsext_servername_callback()
5702 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
5703 - SSL_CTX_set_tlsext_servername_arg()
5704 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
5706 openssl s_client has a new '-servername ...' option.
5708 openssl s_server has new options '-servername_host ...', '-cert2 ...',
5709 '-key2 ...', '-servername_fatal' (subject to change). This allows
5710 testing the HostName extension for a specific single host name ('-cert'
5711 and '-key' remain fallbacks for handshakes without HostName
5712 negotiation). If the unrecognized_name alert has to be sent, this by
5713 default is a warning; it becomes fatal with the '-servername_fatal'
5716 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
5718 *) Add AES and SSE2 assembly language support to VC++ build.
5721 *) Mitigate attack on final subtraction in Montgomery reduction.
5724 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
5725 (which previously caused an internal error).
5728 *) Squeeze another 10% out of IGE mode when in != out.
5731 *) AES IGE mode speedup.
5732 [Dean Gaudet (Google)]
5734 *) Add the Korean symmetric 128-bit cipher SEED (see
5735 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
5736 add SEED ciphersuites from RFC 4162:
5738 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
5739 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
5740 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
5741 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
5743 To minimize changes between patchlevels in the OpenSSL 0.9.8
5744 series, SEED remains excluded from compilation unless OpenSSL
5745 is configured with 'enable-seed'.
5746 [KISA, Bodo Moeller]
5748 *) Mitigate branch prediction attacks, which can be practical if a
5749 single processor is shared, allowing a spy process to extract
5750 information. For detailed background information, see
5751 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
5752 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
5753 and Necessary Software Countermeasures"). The core of the change
5754 are new versions BN_div_no_branch() and
5755 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
5756 respectively, which are slower, but avoid the security-relevant
5757 conditional branches. These are automatically called by BN_div()
5758 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
5759 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
5760 remove a conditional branch.
5762 BN_FLG_CONSTTIME is the new name for the previous
5763 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
5764 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
5765 in the exponent causes BN_mod_exp_mont() to use the alternative
5766 implementation in BN_mod_exp_mont_consttime().) The old name
5767 remains as a deprecated alias.
5769 Similarly, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
5770 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
5771 constant-time implementations for more than just exponentiation.
5772 Here too the old name is kept as a deprecated alias.
5774 BN_BLINDING_new() will now use BN_dup() for the modulus so that
5775 the BN_BLINDING structure gets an independent copy of the
5776 modulus. This means that the previous "BIGNUM *m" argument to
5777 BN_BLINDING_new() and to BN_BLINDING_create_param() now
5778 essentially becomes "const BIGNUM *m", although we can't actually
5779 change this in the header file before 0.9.9. It allows
5780 RSA_setup_blinding() to use BN_with_flags() on the modulus to
5781 enable BN_FLG_CONSTTIME.
5783 [Matthew D Wood (Intel Corp)]
5785 *) In the SSL/TLS server implementation, be strict about session ID
5786 context matching (which matters if an application uses a single
5787 external cache for different purposes). Previously,
5788 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
5789 set. This did ensure strict client verification, but meant that,
5790 with applications using a single external cache for quite
5791 different requirements, clients could circumvent ciphersuite
5792 restrictions for a given session ID context by starting a session
5793 in a different context.
5796 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
5797 a ciphersuite string such as "DEFAULT:RSA" cannot enable
5798 authentication-only ciphersuites.
5801 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
5802 not complete and could lead to a possible single byte overflow
5803 (CVE-2007-5135) [Ben Laurie]
5805 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
5807 *) Since AES128 and AES256 (and similarly Camellia128 and
5808 Camellia256) share a single mask bit in the logic of
5809 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
5810 kludge to work properly if AES128 is available and AES256 isn't
5811 (or if Camellia128 is available and Camellia256 isn't).
5814 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
5815 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
5816 When a point or a seed is encoded in a BIT STRING, we need to
5817 prevent the removal of trailing zero bits to get the proper DER
5818 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
5819 of a NamedBitList, for which trailing 0 bits need to be removed.)
5822 *) Have SSL/TLS server implementation tolerate "mismatched" record
5823 protocol version while receiving ClientHello even if the
5824 ClientHello is fragmented. (The server can't insist on the
5825 particular protocol version it has chosen before the ServerHello
5826 message has informed the client about his choice.)
5829 *) Add RFC 3779 support.
5830 [Rob Austein for ARIN, Ben Laurie]
5832 *) Load error codes if they are not already present instead of using a
5833 static variable. This allows them to be cleanly unloaded and reloaded.
5834 Improve header file function name parsing.
5837 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
5838 or CAPABILITY handshake as required by RFCs.
5841 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
5843 *) Introduce limits to prevent malicious keys being able to
5844 cause a denial of service. (CVE-2006-2940)
5845 [Steve Henson, Bodo Moeller]
5847 *) Fix ASN.1 parsing of certain invalid structures that can result
5848 in a denial of service. (CVE-2006-2937) [Steve Henson]
5850 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
5851 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
5853 *) Fix SSL client code which could crash if connecting to a
5854 malicious SSLv2 server. (CVE-2006-4343)
5855 [Tavis Ormandy and Will Drewry, Google Security Team]
5857 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
5858 match only those. Before that, "AES256-SHA" would be interpreted
5859 as a pattern and match "AES128-SHA" too (since AES128-SHA got
5860 the same strength classification in 0.9.7h) as we currently only
5861 have a single AES bit in the ciphersuite description bitmap.
5862 That change, however, also applied to ciphersuite strings such as
5863 "RC4-MD5" that intentionally matched multiple ciphersuites --
5864 namely, SSL 2.0 ciphersuites in addition to the more common ones
5865 from SSL 3.0/TLS 1.0.
5867 So we change the selection algorithm again: Naming an explicit
5868 ciphersuite selects this one ciphersuite, and any other similar
5869 ciphersuite (same bitmap) from *other* protocol versions.
5870 Thus, "RC4-MD5" again will properly select both the SSL 2.0
5871 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
5873 Since SSL 2.0 does not have any ciphersuites for which the
5874 128/256 bit distinction would be relevant, this works for now.
5875 The proper fix will be to use different bits for AES128 and
5876 AES256, which would have avoided the problems from the beginning;
5877 however, bits are scarce, so we can only do this in a new release
5878 (not just a patchlevel) when we can change the SSL_CIPHER
5879 definition to split the single 'unsigned long mask' bitmap into
5880 multiple values to extend the available space.
5884 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
5886 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
5887 (CVE-2006-4339) [Ben Laurie and Google Security Team]
5889 *) Add AES IGE and biIGE modes.
5892 *) Change the Unix randomness entropy gathering to use poll() when
5893 possible instead of select(), since the latter has some
5894 undesirable limitations.
5895 [Darryl Miles via Richard Levitte and Bodo Moeller]
5897 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
5898 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
5899 cannot be implicitly activated as part of, e.g., the "AES" alias.
5900 However, please upgrade to OpenSSL 0.9.9[-dev] for
5901 non-experimental use of the ECC ciphersuites to get TLS extension
5902 support, which is required for curve and point format negotiation
5903 to avoid potential handshake problems.
5906 *) Disable rogue ciphersuites:
5908 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
5909 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
5910 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
5912 The latter two were purportedly from
5913 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
5916 Also deactivate the remaining ciphersuites from
5917 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
5918 unofficial, and the ID has long expired.
5921 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
5922 dual-core machines) and other potential thread-safety issues.
5925 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
5926 versions), which is now available for royalty-free use
5927 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
5928 Also, add Camellia TLS ciphersuites from RFC 4132.
5930 To minimize changes between patchlevels in the OpenSSL 0.9.8
5931 series, Camellia remains excluded from compilation unless OpenSSL
5932 is configured with 'enable-camellia'.
5935 *) Disable the padding bug check when compression is in use. The padding
5936 bug check assumes the first packet is of even length, this is not
5937 necessarily true if compression is enabled and can result in false
5938 positives causing handshake failure. The actual bug test is ancient
5939 code so it is hoped that implementations will either have fixed it by
5940 now or any which still have the bug do not support compression.
5943 Changes between 0.9.8a and 0.9.8b [04 May 2006]
5945 *) When applying a cipher rule check to see if string match is an explicit
5946 cipher suite and only match that one cipher suite if it is.
5949 *) Link in manifests for VC++ if needed.
5950 [Austin Ziegler <halostatue@gmail.com>]
5952 *) Update support for ECC-based TLS ciphersuites according to
5953 draft-ietf-tls-ecc-12.txt with proposed changes (but without
5954 TLS extensions, which are supported starting with the 0.9.9
5955 branch, not in the OpenSSL 0.9.8 branch).
5958 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
5959 opaque EVP_CIPHER_CTX handling.
5962 *) Fixes and enhancements to zlib compression code. We now only use
5963 "zlib1.dll" and use the default __cdecl calling convention on Win32
5964 to conform with the standards mentioned here:
5965 http://www.zlib.net/DLL_FAQ.txt
5966 Static zlib linking now works on Windows and the new --with-zlib-include
5967 --with-zlib-lib options to Configure can be used to supply the location
5968 of the headers and library. Gracefully handle case where zlib library
5972 *) Several fixes and enhancements to the OID generation code. The old code
5973 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
5974 handle numbers larger than ULONG_MAX, truncated printing and had a
5975 non standard OBJ_obj2txt() behaviour.
5978 *) Add support for building of engines under engine/ as shared libraries
5979 under VC++ build system.
5982 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
5983 Hopefully, we will not see any false combination of paths any more.
5986 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
5988 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
5989 (part of SSL_OP_ALL). This option used to disable the
5990 countermeasure against man-in-the-middle protocol-version
5991 rollback in the SSL 2.0 server implementation, which is a bad
5992 idea. (CVE-2005-2969)
5994 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
5995 for Information Security, National Institute of Advanced Industrial
5996 Science and Technology [AIST], Japan)]
5998 *) Add two function to clear and return the verify parameter flags.
6001 *) Keep cipherlists sorted in the source instead of sorting them at
6002 runtime, thus removing the need for a lock.
6005 *) Avoid some small subgroup attacks in Diffie-Hellman.
6006 [Nick Mathewson and Ben Laurie]
6008 *) Add functions for well-known primes.
6011 *) Extended Windows CE support.
6012 [Satoshi Nakamura and Andy Polyakov]
6014 *) Initialize SSL_METHOD structures at compile time instead of during
6015 runtime, thus removing the need for a lock.
6018 *) Make PKCS7_decrypt() work even if no certificate is supplied by
6019 attempting to decrypt each encrypted key in turn. Add support to
6023 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
6025 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
6028 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
6031 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
6032 key into the same file any more.
6035 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
6038 *) Add -utf8 command line and config file option to 'ca'.
6039 [Stefan <stf@udoma.org]
6041 *) Removed the macro des_crypt(), as it seems to conflict with some
6042 libraries. Use DES_crypt().
6045 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
6046 involves renaming the source and generated shared-libs for
6047 both. The engines will accept the corrected or legacy ids
6048 ('ncipher' and '4758_cca' respectively) when binding. NB,
6049 this only applies when building 'shared'.
6050 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
6052 *) Add attribute functions to EVP_PKEY structure. Modify
6053 PKCS12_create() to recognize a CSP name attribute and
6054 use it. Make -CSP option work again in pkcs12 utility.
6057 *) Add new functionality to the bn blinding code:
6058 - automatic re-creation of the BN_BLINDING parameters after
6059 a fixed number of uses (currently 32)
6060 - add new function for parameter creation
6061 - introduce flags to control the update behaviour of the
6062 BN_BLINDING parameters
6063 - hide BN_BLINDING structure
6064 Add a second BN_BLINDING slot to the RSA structure to improve
6065 performance when a single RSA object is shared among several
6069 *) Add support for DTLS.
6070 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
6072 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
6073 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
6076 *) Remove buggy and incomplete DH cert support from
6077 ssl/ssl_rsa.c and ssl/s3_both.c
6080 *) Use SHA-1 instead of MD5 as the default digest algorithm for
6081 the apps/openssl applications.
6084 *) Compile clean with "-Wall -Wmissing-prototypes
6085 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
6086 DEBUG_SAFESTACK must also be set.
6089 *) Change ./Configure so that certain algorithms can be disabled by default.
6090 The new counterpiece to "no-xxx" is "enable-xxx".
6092 The patented RC5 and MDC2 algorithms will now be disabled unless
6093 "enable-rc5" and "enable-mdc2", respectively, are specified.
6095 (IDEA remains enabled despite being patented. This is because IDEA
6096 is frequently required for interoperability, and there is no license
6097 fee for non-commercial use. As before, "no-idea" can be used to
6098 avoid this algorithm.)
6102 *) Add processing of proxy certificates (see RFC 3820). This work was
6103 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
6104 EGEE (Enabling Grids for E-science in Europe).
6107 *) RC4 performance overhaul on modern architectures/implementations, such
6108 as Intel P4, IA-64 and AMD64.
6111 *) New utility extract-section.pl. This can be used specify an alternative
6112 section number in a pod file instead of having to treat each file as
6113 a separate case in Makefile. This can be done by adding two lines to the
6116 =for comment openssl_section:XXX
6118 The blank line is mandatory.
6122 *) New arguments -certform, -keyform and -pass for s_client and s_server
6123 to allow alternative format key and certificate files and passphrase
6127 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
6128 update associated structures and add various utility functions.
6130 Add new policy related verify parameters, include policy checking in
6131 standard verify code. Enhance 'smime' application with extra parameters
6132 to support policy checking and print out.
6135 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
6136 Nehemiah processors. These extensions support AES encryption in hardware
6137 as well as RNG (though RNG support is currently disabled).
6138 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
6140 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
6143 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
6144 [Andy Polyakov and a number of other people]
6146 *) Improved PowerPC platform support. Most notably BIGNUM assembler
6147 implementation contributed by IBM.
6148 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
6150 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
6151 exponent rather than 'unsigned long'. There is a corresponding change to
6152 the new 'rsa_keygen' element of the RSA_METHOD structure.
6153 [Jelte Jansen, Geoff Thorpe]
6155 *) Functionality for creating the initial serial number file is now
6156 moved from CA.pl to the 'ca' utility with a new option -create_serial.
6158 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
6159 number file to 1, which is bound to cause problems. To avoid
6160 the problems while respecting compatibility between different 0.9.7
6161 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
6162 CA.pl for serial number initialization. With the new release 0.9.8,
6163 we can fix the problem directly in the 'ca' utility.)
6166 *) Reduced header interdependencies by declaring more opaque objects in
6167 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
6168 give fewer recursive includes, which could break lazy source code - so
6169 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
6170 developers should define this symbol when building and using openssl to
6171 ensure they track the recommended behaviour, interfaces, [etc], but
6172 backwards-compatible behaviour prevails when this isn't defined.
6175 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
6178 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
6179 This will generate a random key of the appropriate length based on the
6180 cipher context. The EVP_CIPHER can provide its own random key generation
6181 routine to support keys of a specific form. This is used in the des and
6182 3des routines to generate a key of the correct parity. Update S/MIME
6183 code to use new functions and hence generate correct parity DES keys.
6184 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
6185 valid (weak or incorrect parity).
6188 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
6189 as looking them up. This is useful when the verified structure may contain
6190 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
6191 present unless the new PKCS7_NO_CRL flag is asserted.
6194 *) Extend ASN1 oid configuration module. It now additionally accepts the
6197 shortName = some long name, 1.2.3.4
6200 *) Reimplemented the BN_CTX implementation. There is now no more static
6201 limitation on the number of variables it can handle nor the depth of the
6202 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
6203 information can now expand as required, and rather than having a single
6204 static array of bignums, BN_CTX now uses a linked-list of such arrays
6205 allowing it to expand on demand whilst maintaining the usefulness of
6206 BN_CTX's "bundling".
6209 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
6210 to allow all RSA operations to function using a single BN_CTX.
6213 *) Preliminary support for certificate policy evaluation and checking. This
6214 is initially intended to pass the tests outlined in "Conformance Testing
6215 of Relying Party Client Certificate Path Processing Logic" v1.07.
6218 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
6219 remained unused and not that useful. A variety of other little bignum
6220 tweaks and fixes have also been made continuing on from the audit (see
6224 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
6225 associated ASN1, EVP and SSL functions and old ASN1 macros.
6228 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
6229 and this should never fail. So the return value from the use of
6230 BN_set_word() (which can fail due to needless expansion) is now deprecated;
6231 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
6234 *) BN_CTX_get() should return zero-valued bignums, providing the same
6235 initialised value as BN_new().
6236 [Geoff Thorpe, suggested by Ulf Möller]
6238 *) Support for inhibitAnyPolicy certificate extension.
6241 *) An audit of the BIGNUM code is underway, for which debugging code is
6242 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
6243 is considered valid when processing BIGNUMs, and causes execution to
6244 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
6245 further steps are taken to deliberately pollute unused data in BIGNUM
6246 structures to try and expose faulty code further on. For now, openssl will
6247 (in its default mode of operation) continue to tolerate the inconsistent
6248 forms that it has tolerated in the past, but authors and packagers should
6249 consider trying openssl and their own applications when compiled with
6250 these debugging symbols defined. It will help highlight potential bugs in
6251 their own code, and will improve the test coverage for OpenSSL itself. At
6252 some point, these tighter rules will become openssl's default to improve
6253 maintainability, though the assert()s and other overheads will remain only
6254 in debugging configurations. See bn.h for more details.
6255 [Geoff Thorpe, Nils Larsch, Ulf Möller]
6257 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
6258 that can only be obtained through BN_CTX_new() (which implicitly
6259 initialises it). The presence of this function only made it possible
6260 to overwrite an existing structure (and cause memory leaks).
6263 *) Because of the callback-based approach for implementing LHASH as a
6264 template type, lh_insert() adds opaque objects to hash-tables and
6265 lh_doall() or lh_doall_arg() are typically used with a destructor callback
6266 to clean up those corresponding objects before destroying the hash table
6267 (and losing the object pointers). So some over-zealous constifications in
6268 LHASH have been relaxed so that lh_insert() does not take (nor store) the
6269 objects as "const" and the lh_doall[_arg] callback wrappers are not
6270 prototyped to have "const" restrictions on the object pointers they are
6271 given (and so aren't required to cast them away any more).
6274 *) The tmdiff.h API was so ugly and minimal that our own timing utility
6275 (speed) prefers to use its own implementation. The two implementations
6276 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
6277 its object type properly exposed (MS_TM) instead of casting to/from "char
6278 *". This may still change yet if someone realises MS_TM and "ms_time_***"
6279 aren't necessarily the greatest nomenclatures - but this is what was used
6280 internally to the implementation so I've used that for now.
6283 *) Ensure that deprecated functions do not get compiled when
6284 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
6285 the self-tests were still using deprecated key-generation functions so
6286 these have been updated also.
6289 *) Reorganise PKCS#7 code to separate the digest location functionality
6290 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
6291 New function PKCS7_set_digest() to set the digest type for PKCS#7
6292 digestedData type. Add additional code to correctly generate the
6293 digestedData type and add support for this type in PKCS7 initialization
6297 *) New function PKCS7_set0_type_other() this initializes a PKCS7
6298 structure of type "other".
6301 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
6302 sure the loop does correctly stop and breaking ("division by zero")
6303 modulus operations are not performed. The (pre-generated) prime
6304 table crypto/bn/bn_prime.h was already correct, but it could not be
6305 re-generated on some platforms because of the "division by zero"
6306 situation in the script.
6307 [Ralf S. Engelschall]
6309 *) Update support for ECC-based TLS ciphersuites according to
6310 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
6311 SHA-1 now is only used for "small" curves (where the
6312 representation of a field element takes up to 24 bytes); for
6313 larger curves, the field element resulting from ECDH is directly
6314 used as premaster secret.
6315 [Douglas Stebila (Sun Microsystems Laboratories)]
6317 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
6318 curve secp160r1 to the tests.
6319 [Douglas Stebila (Sun Microsystems Laboratories)]
6321 *) Add the possibility to load symbols globally with DSO.
6322 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
6324 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
6325 control of the error stack.
6328 *) Add support for STORE in ENGINE.
6331 *) Add the STORE type. The intention is to provide a common interface
6332 to certificate and key stores, be they simple file-based stores, or
6333 HSM-type store, or LDAP stores, or...
6334 NOTE: The code is currently UNTESTED and isn't really used anywhere.
6337 *) Add a generic structure called OPENSSL_ITEM. This can be used to
6338 pass a list of arguments to any function as well as provide a way
6339 for a function to pass data back to the caller.
6342 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
6343 works like BUF_strdup() but can be used to duplicate a portion of
6344 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
6348 *) Add the function sk_find_ex() which works like sk_find(), but will
6349 return an index to an element even if an exact match couldn't be
6350 found. The index is guaranteed to point at the element where the
6351 searched-for key would be inserted to preserve sorting order.
6354 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
6355 takes an extra flags argument for optional functionality. Currently,
6356 the following flags are defined:
6358 OBJ_BSEARCH_VALUE_ON_NOMATCH
6359 This one gets OBJ_bsearch_ex() to return a pointer to the first
6360 element where the comparing function returns a negative or zero
6363 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
6364 This one gets OBJ_bsearch_ex() to return a pointer to the first
6365 element where the comparing function returns zero. This is useful
6366 if there are more than one element where the comparing function
6370 *) Make it possible to create self-signed certificates with 'openssl ca'
6371 in such a way that the self-signed certificate becomes part of the
6372 CA database and uses the same mechanisms for serial number generation
6373 as all other certificate signing. The new flag '-selfsign' enables
6374 this functionality. Adapt CA.sh and CA.pl.in.
6377 *) Add functionality to check the public key of a certificate request
6378 against a given private. This is useful to check that a certificate
6379 request can be signed by that key (self-signing).
6382 *) Make it possible to have multiple active certificates with the same
6383 subject in the CA index file. This is done only if the keyword
6384 'unique_subject' is set to 'no' in the main CA section (default
6385 if 'CA_default') of the configuration file. The value is saved
6386 with the database itself in a separate index attribute file,
6387 named like the index file with '.attr' appended to the name.
6390 *) Generate multi-valued AVAs using '+' notation in config files for
6394 *) Support for nameConstraints certificate extension.
6397 *) Support for policyConstraints certificate extension.
6400 *) Support for policyMappings certificate extension.
6403 *) Make sure the default DSA_METHOD implementation only uses its
6404 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
6405 and change its own handlers to be NULL so as to remove unnecessary
6406 indirection. This lets alternative implementations fallback to the
6407 default implementation more easily.
6410 *) Support for directoryName in GeneralName related extensions
6414 *) Make it possible to link applications using Makefile.shared.
6415 Make that possible even when linking against static libraries!
6418 *) Support for single pass processing for S/MIME signing. This now
6419 means that S/MIME signing can be done from a pipe, in addition
6420 cleartext signing (multipart/signed type) is effectively streaming
6421 and the signed data does not need to be all held in memory.
6423 This is done with a new flag PKCS7_STREAM. When this flag is set
6424 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
6425 is done after the data is output (and digests calculated) in
6426 SMIME_write_PKCS7().
6429 *) Add full support for -rpath/-R, both in shared libraries and
6430 applications, at least on the platforms where it's known how
6434 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
6435 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
6436 will now compute a table of multiples of the generator that
6437 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
6438 faster (notably in the case of a single point multiplication,
6439 scalar * generator).
6440 [Nils Larsch, Bodo Moeller]
6442 *) IPv6 support for certificate extensions. The various extensions
6443 which use the IP:a.b.c.d can now take IPv6 addresses using the
6444 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
6448 *) Added an ENGINE that implements RSA by performing private key
6449 exponentiations with the GMP library. The conversions to and from
6450 GMP's mpz_t format aren't optimised nor are any montgomery forms
6451 cached, and on x86 it appears OpenSSL's own performance has caught up.
6452 However there are likely to be other architectures where GMP could
6453 provide a boost. This ENGINE is not built in by default, but it can be
6454 specified at Configure time and should be accompanied by the necessary
6455 linker additions, eg;
6456 ./config -DOPENSSL_USE_GMP -lgmp
6459 *) "openssl engine" will not display ENGINE/DSO load failure errors when
6460 testing availability of engines with "-t" - the old behaviour is
6461 produced by increasing the feature's verbosity with "-tt".
6464 *) ECDSA routines: under certain error conditions uninitialized BN objects
6465 could be freed. Solution: make sure initialization is performed early
6466 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
6470 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
6471 and DH_METHOD (eg. by ENGINE implementations) to override the normal
6472 software implementations. For DSA and DH, parameter generation can
6473 also be overridden by providing the appropriate method callbacks.
6476 *) Change the "progress" mechanism used in key-generation and
6477 primality testing to functions that take a new BN_GENCB pointer in
6478 place of callback/argument pairs. The new API functions have "_ex"
6479 postfixes and the older functions are reimplemented as wrappers for
6480 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
6481 declarations of the old functions to help (graceful) attempts to
6482 migrate to the new functions. Also, the new key-generation API
6483 functions operate on a caller-supplied key-structure and return
6484 success/failure rather than returning a key or NULL - this is to
6485 help make "keygen" another member function of RSA_METHOD etc.
6487 Example for using the new callback interface:
6489 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
6493 BN_GENCB_set(&my_cb, my_callback, my_arg);
6495 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
6496 /* For the meaning of a, b in calls to my_callback(), see the
6497 * documentation of the function that calls the callback.
6498 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
6499 * my_callback should return 1 if it wants BN_is_prime_ex()
6500 * to continue, or 0 to stop.
6505 *) Change the ZLIB compression method to be stateful, and make it
6506 available to TLS with the number defined in
6507 draft-ietf-tls-compression-04.txt.
6510 *) Add the ASN.1 structures and functions for CertificatePair, which
6511 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
6513 CertificatePair ::= SEQUENCE {
6514 forward [0] Certificate OPTIONAL,
6515 reverse [1] Certificate OPTIONAL,
6516 -- at least one of the pair shall be present -- }
6518 Also implement the PEM functions to read and write certificate
6519 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
6521 This needed to be defined, mostly for the sake of the LDAP
6522 attribute crossCertificatePair, but may prove useful elsewhere as
6526 *) Make it possible to inhibit symlinking of shared libraries in
6527 Makefile.shared, for Cygwin's sake.
6530 *) Extend the BIGNUM API by creating a function
6531 void BN_set_negative(BIGNUM *a, int neg);
6532 and a macro that behave like
6533 int BN_is_negative(const BIGNUM *a);
6535 to avoid the need to access 'a->neg' directly in applications.
6538 *) Implement fast modular reduction for pseudo-Mersenne primes
6539 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
6540 EC_GROUP_new_curve_GFp() will now automatically use this
6542 [Nils Larsch <nla@trustcenter.de>]
6544 *) Add new lock type (CRYPTO_LOCK_BN).
6547 *) Change the ENGINE framework to automatically load engines
6548 dynamically from specific directories unless they could be
6549 found to already be built in or loaded. Move all the
6550 current engines except for the cryptodev one to a new
6552 The engines in engines/ are built as shared libraries if
6553 the "shared" options was given to ./Configure or ./config.
6554 Otherwise, they are inserted in libcrypto.a.
6555 /usr/local/ssl/engines is the default directory for dynamic
6556 engines, but that can be overridden at configure time through
6557 the usual use of --prefix and/or --openssldir, and at run
6558 time with the environment variable OPENSSL_ENGINES.
6559 [Geoff Thorpe and Richard Levitte]
6561 *) Add Makefile.shared, a helper makefile to build shared
6562 libraries. Adapt Makefile.org.
6565 *) Add version info to Win32 DLLs.
6566 [Peter 'Luna' Runestig" <peter@runestig.com>]
6568 *) Add new 'medium level' PKCS#12 API. Certificates and keys
6569 can be added using this API to created arbitrary PKCS#12
6570 files while avoiding the low level API.
6572 New options to PKCS12_create(), key or cert can be NULL and
6573 will then be omitted from the output file. The encryption
6574 algorithm NIDs can be set to -1 for no encryption, the mac
6575 iteration count can be set to 0 to omit the mac.
6577 Enhance pkcs12 utility by making the -nokeys and -nocerts
6578 options work when creating a PKCS#12 file. New option -nomac
6579 to omit the mac, NONE can be set for an encryption algorithm.
6580 New code is modified to use the enhanced PKCS12_create()
6581 instead of the low level API.
6584 *) Extend ASN1 encoder to support indefinite length constructed
6585 encoding. This can output sequences tags and octet strings in
6586 this form. Modify pk7_asn1.c to support indefinite length
6587 encoding. This is experimental and needs additional code to
6588 be useful, such as an ASN1 bio and some enhanced streaming
6591 Extend template encode functionality so that tagging is passed
6592 down to the template encoder.
6595 *) Let 'openssl req' fail if an argument to '-newkey' is not
6596 recognized instead of using RSA as a default.
6599 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
6600 As these are not official, they are not included in "ALL";
6601 the "ECCdraft" ciphersuite group alias can be used to select them.
6602 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
6604 *) Add ECDH engine support.
6605 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
6607 *) Add ECDH in new directory crypto/ecdh/.
6608 [Douglas Stebila (Sun Microsystems Laboratories)]
6610 *) Let BN_rand_range() abort with an error after 100 iterations
6611 without success (which indicates a broken PRNG).
6614 *) Change BN_mod_sqrt() so that it verifies that the input value
6615 is really the square of the return value. (Previously,
6616 BN_mod_sqrt would show GIGO behaviour.)
6619 *) Add named elliptic curves over binary fields from X9.62, SECG,
6620 and WAP/WTLS; add OIDs that were still missing.
6622 [Sheueling Chang Shantz and Douglas Stebila
6623 (Sun Microsystems Laboratories)]
6625 *) Extend the EC library for elliptic curves over binary fields
6626 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
6629 EC_GF2m_simple_method
6633 EC_GROUP_new_curve_GF2m
6634 EC_GROUP_set_curve_GF2m
6635 EC_GROUP_get_curve_GF2m
6636 EC_POINT_set_affine_coordinates_GF2m
6637 EC_POINT_get_affine_coordinates_GF2m
6638 EC_POINT_set_compressed_coordinates_GF2m
6640 Point compression for binary fields is disabled by default for
6641 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
6644 As binary polynomials are represented as BIGNUMs, various members
6645 of the EC_GROUP and EC_POINT data structures can be shared
6646 between the implementations for prime fields and binary fields;
6647 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
6648 are essentially identical to their ..._GFp counterparts.
6649 (For simplicity, the '..._GFp' prefix has been dropped from
6650 various internal method names.)
6652 An internal 'field_div' method (similar to 'field_mul' and
6653 'field_sqr') has been added; this is used only for binary fields.
6655 [Sheueling Chang Shantz and Douglas Stebila
6656 (Sun Microsystems Laboratories)]
6658 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
6659 through methods ('mul', 'precompute_mult').
6661 The generic implementations (now internally called 'ec_wNAF_mul'
6662 and 'ec_wNAF_precomputed_mult') remain the default if these
6663 methods are undefined.
6665 [Sheueling Chang Shantz and Douglas Stebila
6666 (Sun Microsystems Laboratories)]
6668 *) New function EC_GROUP_get_degree, which is defined through
6669 EC_METHOD. For curves over prime fields, this returns the bit
6670 length of the modulus.
6672 [Sheueling Chang Shantz and Douglas Stebila
6673 (Sun Microsystems Laboratories)]
6675 *) New functions EC_GROUP_dup, EC_POINT_dup.
6676 (These simply call ..._new and ..._copy).
6678 [Sheueling Chang Shantz and Douglas Stebila
6679 (Sun Microsystems Laboratories)]
6681 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
6682 Polynomials are represented as BIGNUMs (where the sign bit is not
6683 used) in the following functions [macros]:
6686 BN_GF2m_sub [= BN_GF2m_add]
6687 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
6688 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
6689 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
6691 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
6692 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
6693 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
6694 BN_GF2m_cmp [= BN_ucmp]
6696 (Note that only the 'mod' functions are actually for fields GF(2^m).
6697 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
6699 For some functions, an the irreducible polynomial defining a
6700 field can be given as an 'unsigned int[]' with strictly
6701 decreasing elements giving the indices of those bits that are set;
6702 i.e., p[] represents the polynomial
6703 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
6705 p[0] > p[1] > ... > p[k] = 0.
6706 This applies to the following functions:
6711 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
6712 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
6714 BN_GF2m_mod_sqrt_arr
6715 BN_GF2m_mod_solve_quad_arr
6719 Conversion can be performed by the following functions:
6724 bntest.c has additional tests for binary polynomial arithmetic.
6726 Two implementations for BN_GF2m_mod_div() are available.
6727 The default algorithm simply uses BN_GF2m_mod_inv() and
6728 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
6729 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
6730 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
6732 [Sheueling Chang Shantz and Douglas Stebila
6733 (Sun Microsystems Laboratories)]
6735 *) Add new error code 'ERR_R_DISABLED' that can be used when some
6736 functionality is disabled at compile-time.
6737 [Douglas Stebila <douglas.stebila@sun.com>]
6739 *) Change default behaviour of 'openssl asn1parse' so that more
6740 information is visible when viewing, e.g., a certificate:
6742 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
6743 mode the content of non-printable OCTET STRINGs is output in a
6744 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
6745 avoid the appearance of a printable string.
6746 [Nils Larsch <nla@trustcenter.de>]
6748 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
6750 EC_GROUP_set_asn1_flag()
6751 EC_GROUP_get_asn1_flag()
6752 EC_GROUP_set_point_conversion_form()
6753 EC_GROUP_get_point_conversion_form()
6754 These control ASN1 encoding details:
6755 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
6756 has been set to OPENSSL_EC_NAMED_CURVE.
6757 - Points are encoded in uncompressed form by default; options for
6758 asn1_for are as for point2oct, namely
6759 POINT_CONVERSION_COMPRESSED
6760 POINT_CONVERSION_UNCOMPRESSED
6761 POINT_CONVERSION_HYBRID
6763 Also add 'seed' and 'seed_len' members to EC_GROUP with access
6766 EC_GROUP_get0_seed()
6767 EC_GROUP_get_seed_len()
6768 This is used only for ASN1 purposes (so far).
6769 [Nils Larsch <nla@trustcenter.de>]
6771 *) Add 'field_type' member to EC_METHOD, which holds the NID
6772 of the appropriate field type OID. The new function
6773 EC_METHOD_get_field_type() returns this value.
6774 [Nils Larsch <nla@trustcenter.de>]
6779 EC_POINT_point2hex()
6780 EC_POINT_hex2point()
6781 providing useful interfaces to EC_POINT_point2oct() and
6782 EC_POINT_oct2point().
6783 [Nils Larsch <nla@trustcenter.de>]
6785 *) Change internals of the EC library so that the functions
6786 EC_GROUP_set_generator()
6787 EC_GROUP_get_generator()
6788 EC_GROUP_get_order()
6789 EC_GROUP_get_cofactor()
6790 are implemented directly in crypto/ec/ec_lib.c and not dispatched
6791 to methods, which would lead to unnecessary code duplication when
6792 adding different types of curves.
6793 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
6795 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
6796 arithmetic, and such that modified wNAFs are generated
6797 (which avoid length expansion in many cases).
6800 *) Add a function EC_GROUP_check_discriminant() (defined via
6801 EC_METHOD) that verifies that the curve discriminant is non-zero.
6803 Add a function EC_GROUP_check() that makes some sanity tests
6804 on a EC_GROUP, its generator and order. This includes
6805 EC_GROUP_check_discriminant().
6806 [Nils Larsch <nla@trustcenter.de>]
6808 *) Add ECDSA in new directory crypto/ecdsa/.
6810 Add applications 'openssl ecparam' and 'openssl ecdsa'
6811 (these are based on 'openssl dsaparam' and 'openssl dsa').
6813 ECDSA support is also included in various other files across the
6814 library. Most notably,
6815 - 'openssl req' now has a '-newkey ecdsa:file' option;
6816 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
6817 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
6818 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
6819 them suitable for ECDSA where domain parameters must be
6820 extracted before the specific public key;
6821 - ECDSA engine support has been added.
6822 [Nils Larsch <nla@trustcenter.de>]
6824 *) Include some named elliptic curves, and add OIDs from X9.62,
6825 SECG, and WAP/WTLS. Each curve can be obtained from the new
6827 EC_GROUP_new_by_curve_name(),
6828 and the list of available named curves can be obtained with
6829 EC_get_builtin_curves().
6830 Also add a 'curve_name' member to EC_GROUP objects, which can be
6832 EC_GROUP_set_curve_name()
6833 EC_GROUP_get_curve_name()
6834 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
6836 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
6837 was actually never needed) and in BN_mul(). The removal in BN_mul()
6838 required a small change in bn_mul_part_recursive() and the addition
6839 of the functions bn_cmp_part_words(), bn_sub_part_words() and
6840 bn_add_part_words(), which do the same thing as bn_cmp_words(),
6841 bn_sub_words() and bn_add_words() except they take arrays with
6845 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
6847 *) Cleanse PEM buffers before freeing them since they may contain
6849 [Benjamin Bennett <ben@psc.edu>]
6851 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
6852 a ciphersuite string such as "DEFAULT:RSA" cannot enable
6853 authentication-only ciphersuites.
6856 *) Since AES128 and AES256 share a single mask bit in the logic of
6857 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
6858 kludge to work properly if AES128 is available and AES256 isn't.
6861 *) Expand security boundary to match 1.1.1 module.
6864 *) Remove redundant features: hash file source, editing of test vectors
6865 modify fipsld to use external fips_premain.c signature.
6868 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
6869 run algorithm test programs.
6872 *) Make algorithm test programs more tolerant of whitespace.
6875 *) Have SSL/TLS server implementation tolerate "mismatched" record
6876 protocol version while receiving ClientHello even if the
6877 ClientHello is fragmented. (The server can't insist on the
6878 particular protocol version it has chosen before the ServerHello
6879 message has informed the client about his choice.)
6882 *) Load error codes if they are not already present instead of using a
6883 static variable. This allows them to be cleanly unloaded and reloaded.
6886 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
6888 *) Introduce limits to prevent malicious keys being able to
6889 cause a denial of service. (CVE-2006-2940)
6890 [Steve Henson, Bodo Moeller]
6892 *) Fix ASN.1 parsing of certain invalid structures that can result
6893 in a denial of service. (CVE-2006-2937) [Steve Henson]
6895 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
6896 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
6898 *) Fix SSL client code which could crash if connecting to a
6899 malicious SSLv2 server. (CVE-2006-4343)
6900 [Tavis Ormandy and Will Drewry, Google Security Team]
6902 *) Change ciphersuite string processing so that an explicit
6903 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
6904 will no longer include "AES128-SHA"), and any other similar
6905 ciphersuite (same bitmap) from *other* protocol versions (so that
6906 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
6907 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
6908 changes from 0.9.8b and 0.9.8d.
6911 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
6913 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
6914 (CVE-2006-4339) [Ben Laurie and Google Security Team]
6916 *) Change the Unix randomness entropy gathering to use poll() when
6917 possible instead of select(), since the latter has some
6918 undesirable limitations.
6919 [Darryl Miles via Richard Levitte and Bodo Moeller]
6921 *) Disable rogue ciphersuites:
6923 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
6924 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
6925 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
6927 The latter two were purportedly from
6928 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
6931 Also deactivate the remaining ciphersuites from
6932 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
6933 unofficial, and the ID has long expired.
6936 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
6937 dual-core machines) and other potential thread-safety issues.
6940 Changes between 0.9.7i and 0.9.7j [04 May 2006]
6942 *) Adapt fipsld and the build system to link against the validated FIPS
6943 module in FIPS mode.
6946 *) Fixes for VC++ 2005 build under Windows.
6949 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
6950 from a Windows bash shell such as MSYS. It is autodetected from the
6951 "config" script when run from a VC++ environment. Modify standard VC++
6952 build to use fipscanister.o from the GNU make build.
6955 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
6957 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
6958 The value now differs depending on if you build for FIPS or not.
6959 BEWARE! A program linked with a shared FIPSed libcrypto can't be
6960 safely run with a non-FIPSed libcrypto, as it may crash because of
6961 the difference induced by this change.
6964 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
6966 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
6967 (part of SSL_OP_ALL). This option used to disable the
6968 countermeasure against man-in-the-middle protocol-version
6969 rollback in the SSL 2.0 server implementation, which is a bad
6970 idea. (CVE-2005-2969)
6972 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
6973 for Information Security, National Institute of Advanced Industrial
6974 Science and Technology [AIST], Japan)]
6976 *) Minimal support for X9.31 signatures and PSS padding modes. This is
6977 mainly for FIPS compliance and not fully integrated at this stage.
6980 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
6981 the exponentiation using a fixed-length exponent. (Otherwise,
6982 the information leaked through timing could expose the secret key
6983 after many signatures; cf. Bleichenbacher's attack on DSA with
6987 *) Make a new fixed-window mod_exp implementation the default for
6988 RSA, DSA, and DH private-key operations so that the sequence of
6989 squares and multiplies and the memory access pattern are
6990 independent of the particular secret key. This will mitigate
6991 cache-timing and potential related attacks.
6993 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
6994 and this is automatically used by BN_mod_exp_mont() if the new flag
6995 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
6996 will use this BN flag for private exponents unless the flag
6997 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
6998 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
7000 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
7002 *) Change the client implementation for SSLv23_method() and
7003 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
7004 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
7005 (Previously, the SSL 2.0 backwards compatible Client Hello
7006 message format would be used even with SSL_OP_NO_SSLv2.)
7009 *) Add support for smime-type MIME parameter in S/MIME messages which some
7013 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
7014 a threadsafe manner. Modify rsa code to use new function and add calls
7015 to dsa and dh code (which had race conditions before).
7018 *) Include the fixed error library code in the C error file definitions
7019 instead of fixing them up at runtime. This keeps the error code
7020 structures constant.
7023 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
7025 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
7028 *) Fixes for newer kerberos headers. NB: the casts are needed because
7029 the 'length' field is signed on one version and unsigned on another
7030 with no (?) obvious way to tell the difference, without these VC++
7031 complains. Also the "definition" of FAR (blank) is no longer included
7032 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
7033 some needed definitions.
7036 *) Undo Cygwin change.
7039 *) Added support for proxy certificates according to RFC 3820.
7040 Because they may be a security thread to unaware applications,
7041 they must be explicitly allowed in run-time. See
7042 docs/HOWTO/proxy_certificates.txt for further information.
7045 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
7047 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
7048 server and client random values. Previously
7049 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
7050 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
7052 This change has negligible security impact because:
7054 1. Server and client random values still have 24 bytes of pseudo random
7057 2. Server and client random values are sent in the clear in the initial
7060 3. The master secret is derived using the premaster secret (48 bytes in
7061 size for static RSA ciphersuites) as well as client server and random
7064 The OpenSSL team would like to thank the UK NISCC for bringing this issue
7067 [Stephen Henson, reported by UK NISCC]
7069 *) Use Windows randomness collection on Cygwin.
7072 *) Fix hang in EGD/PRNGD query when communication socket is closed
7073 prematurely by EGD/PRNGD.
7074 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
7076 *) Prompt for pass phrases when appropriate for PKCS12 input format.
7079 *) Back-port of selected performance improvements from development
7080 branch, as well as improved support for PowerPC platforms.
7083 *) Add lots of checks for memory allocation failure, error codes to indicate
7084 failure and freeing up memory if a failure occurs.
7085 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
7087 *) Add new -passin argument to dgst.
7090 *) Perform some character comparisons of different types in X509_NAME_cmp:
7091 this is needed for some certificates that re-encode DNs into UTF8Strings
7092 (in violation of RFC3280) and can't or won't issue name rollover
7096 *) Make an explicit check during certificate validation to see that
7097 the CA setting in each certificate on the chain is correct. As a
7098 side effect always do the following basic checks on extensions,
7099 not just when there's an associated purpose to the check:
7101 - if there is an unhandled critical extension (unless the user
7102 has chosen to ignore this fault)
7103 - if the path length has been exceeded (if one is set at all)
7104 - that certain extensions fit the associated purpose (if one has
7108 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
7110 *) Avoid a race condition when CRLs are checked in a multi threaded
7111 environment. This would happen due to the reordering of the revoked
7112 entries during signature checking and serial number lookup. Now the
7113 encoding is cached and the serial number sort performed under a lock.
7114 Add new STACK function sk_is_sorted().
7117 *) Add Delta CRL to the extension code.
7120 *) Various fixes to s3_pkt.c so alerts are sent properly.
7121 [David Holmes <d.holmes@f5.com>]
7123 *) Reduce the chances of duplicate issuer name and serial numbers (in
7124 violation of RFC3280) using the OpenSSL certificate creation utilities.
7125 This is done by creating a random 64 bit value for the initial serial
7126 number when a serial number file is created or when a self signed
7127 certificate is created using 'openssl req -x509'. The initial serial
7128 number file is created using 'openssl x509 -next_serial' in CA.pl
7129 rather than being initialized to 1.
7132 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
7134 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
7135 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
7136 [Joe Orton, Steve Henson]
7138 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
7140 [Joe Orton, Steve Henson]
7142 *) Make it possible to have multiple active certificates with the same
7143 subject in the CA index file. This is done only if the keyword
7144 'unique_subject' is set to 'no' in the main CA section (default
7145 if 'CA_default') of the configuration file. The value is saved
7146 with the database itself in a separate index attribute file,
7147 named like the index file with '.attr' appended to the name.
7150 *) X509 verify fixes. Disable broken certificate workarounds when
7151 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
7152 keyUsage extension present. Don't accept CRLs with unhandled critical
7153 extensions: since verify currently doesn't process CRL extensions this
7154 rejects a CRL with *any* critical extensions. Add new verify error codes
7158 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
7159 A clarification of RFC2560 will require the use of OCTET STRINGs and
7160 some implementations cannot handle the current raw format. Since OpenSSL
7161 copies and compares OCSP nonces as opaque blobs without any attempt at
7162 parsing them this should not create any compatibility issues.
7165 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
7166 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
7167 this HMAC (and other) operations are several times slower than OpenSSL
7171 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
7172 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
7174 *) Use the correct content when signing type "other".
7177 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
7179 *) Fix various bugs revealed by running the NISCC test suite:
7181 Stop out of bounds reads in the ASN1 code when presented with
7182 invalid tags (CVE-2003-0543 and CVE-2003-0544).
7184 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
7186 If verify callback ignores invalid public key errors don't try to check
7187 certificate signature with the NULL public key.
7191 *) New -ignore_err option in ocsp application to stop the server
7192 exiting on the first error in a request.
7195 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
7196 if the server requested one: as stated in TLS 1.0 and SSL 3.0
7200 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
7201 extra data after the compression methods not only for TLS 1.0
7202 but also for SSL 3.0 (as required by the specification).
7203 [Bodo Moeller; problem pointed out by Matthias Loepfe]
7205 *) Change X509_certificate_type() to mark the key as exported/exportable
7206 when it's 512 *bits* long, not 512 bytes.
7209 *) Change AES_cbc_encrypt() so it outputs exact multiple of
7210 blocks during encryption.
7213 *) Various fixes to base64 BIO and non blocking I/O. On write
7214 flushes were not handled properly if the BIO retried. On read
7215 data was not being buffered properly and had various logic bugs.
7216 This also affects blocking I/O when the data being decoded is a
7220 *) Various S/MIME bugfixes and compatibility changes:
7221 output correct application/pkcs7 MIME type if
7222 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
7223 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
7224 of files as .eml work). Correctly handle very long lines in MIME
7228 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
7230 *) Countermeasure against the Klima-Pokorny-Rosa extension of
7231 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
7232 a protocol version number mismatch like a decryption error
7233 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
7236 *) Turn on RSA blinding by default in the default implementation
7237 to avoid a timing attack. Applications that don't want it can call
7238 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
7239 They would be ill-advised to do so in most cases.
7240 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
7242 *) Change RSA blinding code so that it works when the PRNG is not
7243 seeded (in this case, the secret RSA exponent is abused as
7244 an unpredictable seed -- if it is not unpredictable, there
7245 is no point in blinding anyway). Make RSA blinding thread-safe
7246 by remembering the creator's thread ID in rsa->blinding and
7247 having all other threads use local one-time blinding factors
7248 (this requires more computation than sharing rsa->blinding, but
7249 avoids excessive locking; and if an RSA object is not shared
7250 between threads, blinding will still be very fast).
7253 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
7254 ENGINE as defaults for all supported algorithms irrespective of
7255 the 'flags' parameter. 'flags' is now honoured, so applications
7256 should make sure they are passing it correctly.
7259 *) Target "mingw" now allows native Windows code to be generated in
7260 the Cygwin environment as well as with the MinGW compiler.
7263 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
7265 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
7266 via timing by performing a MAC computation even if incorrect
7267 block cipher padding has been found. This is a countermeasure
7268 against active attacks where the attacker has to distinguish
7269 between bad padding and a MAC verification error. (CVE-2003-0078)
7271 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
7272 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
7273 Martin Vuagnoux (EPFL, Ilion)]
7275 *) Make the no-err option work as intended. The intention with no-err
7276 is not to have the whole error stack handling routines removed from
7277 libcrypto, it's only intended to remove all the function name and
7278 reason texts, thereby removing some of the footprint that may not
7279 be interesting if those errors aren't displayed anyway.
7281 NOTE: it's still possible for any application or module to have its
7282 own set of error texts inserted. The routines are there, just not
7283 used by default when no-err is given.
7286 *) Add support for FreeBSD on IA64.
7287 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
7289 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
7290 Kerberos function mit_des_cbc_cksum(). Before this change,
7291 the value returned by DES_cbc_cksum() was like the one from
7292 mit_des_cbc_cksum(), except the bytes were swapped.
7293 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
7295 *) Allow an application to disable the automatic SSL chain building.
7296 Before this a rather primitive chain build was always performed in
7297 ssl3_output_cert_chain(): an application had no way to send the
7298 correct chain if the automatic operation produced an incorrect result.
7300 Now the chain builder is disabled if either:
7302 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
7304 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
7306 The reasoning behind this is that an application would not want the
7307 auto chain building to take place if extra chain certificates are
7308 present and it might also want a means of sending no additional
7309 certificates (for example the chain has two certificates and the
7313 *) Add the possibility to build without the ENGINE framework.
7314 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
7316 *) Under Win32 gmtime() can return NULL: check return value in
7317 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
7320 *) DSA routines: under certain error conditions uninitialized BN objects
7321 could be freed. Solution: make sure initialization is performed early
7322 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
7323 Nils Larsch <nla@trustcenter.de> via PR#459)
7326 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
7327 checked on reconnect on the client side, therefore session resumption
7328 could still fail with a "ssl session id is different" error. This
7329 behaviour is masked when SSL_OP_ALL is used due to
7330 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
7331 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
7332 followup to PR #377.
7335 *) IA-32 assembler support enhancements: unified ELF targets, support
7336 for SCO/Caldera platforms, fix for Cygwin shared build.
7339 *) Add support for FreeBSD on sparc64. As a consequence, support for
7340 FreeBSD on non-x86 processors is separate from x86 processors on
7341 the config script, much like the NetBSD support.
7342 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
7344 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
7346 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
7349 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
7350 code (06) was taken as the first octet of the session ID and the last
7351 octet was ignored consequently. As a result SSLv2 client side session
7352 caching could not have worked due to the session ID mismatch between
7354 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
7358 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
7359 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
7363 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
7364 seems that in spite of existing for more than a year, many application
7365 author have done nothing to provide the necessary callbacks, which
7366 means that this particular engine will not work properly anywhere.
7367 This is a very unfortunate situation which forces us, in the name
7368 of usability, to give the hw_ncipher.c a static lock, which is part
7370 NOTE: This is for the 0.9.7 series ONLY. This hack will never
7371 appear in 0.9.8 or later. We EXPECT application authors to have
7372 dealt properly with this when 0.9.8 is released (unless we actually
7373 make such changes in the libcrypto locking code that changes will
7374 have to be made anyway).
7377 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
7378 octets have been read, EOF or an error occurs. Without this change
7379 some truncated ASN1 structures will not produce an error.
7382 *) Disable Heimdal support, since it hasn't been fully implemented.
7383 Still give the possibility to force the use of Heimdal, but with
7384 warnings and a request that patches get sent to openssl-dev.
7387 *) Add the VC-CE target, introduce the WINCE sysname, and add
7388 INSTALL.WCE and appropriate conditionals to make it build.
7389 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
7391 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
7392 cygssl-x.y.z.dll, where x, y and z are the major, minor and
7393 edit numbers of the version.
7394 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
7396 *) Introduce safe string copy and catenation functions
7397 (BUF_strlcpy() and BUF_strlcat()).
7398 [Ben Laurie (CHATS) and Richard Levitte]
7400 *) Avoid using fixed-size buffers for one-line DNs.
7401 [Ben Laurie (CHATS)]
7403 *) Add BUF_MEM_grow_clean() to avoid information leakage when
7404 resizing buffers containing secrets, and use where appropriate.
7405 [Ben Laurie (CHATS)]
7407 *) Avoid using fixed size buffers for configuration file location.
7408 [Ben Laurie (CHATS)]
7410 *) Avoid filename truncation for various CA files.
7411 [Ben Laurie (CHATS)]
7413 *) Use sizeof in preference to magic numbers.
7414 [Ben Laurie (CHATS)]
7416 *) Avoid filename truncation in cert requests.
7417 [Ben Laurie (CHATS)]
7419 *) Add assertions to check for (supposedly impossible) buffer
7421 [Ben Laurie (CHATS)]
7423 *) Don't cache truncated DNS entries in the local cache (this could
7424 potentially lead to a spoofing attack).
7425 [Ben Laurie (CHATS)]
7427 *) Fix various buffers to be large enough for hex/decimal
7428 representations in a platform independent manner.
7429 [Ben Laurie (CHATS)]
7431 *) Add CRYPTO_realloc_clean() to avoid information leakage when
7432 resizing buffers containing secrets, and use where appropriate.
7433 [Ben Laurie (CHATS)]
7435 *) Add BIO_indent() to avoid much slightly worrying code to do
7437 [Ben Laurie (CHATS)]
7439 *) Convert sprintf()/BIO_puts() to BIO_printf().
7440 [Ben Laurie (CHATS)]
7442 *) buffer_gets() could terminate with the buffer only half
7444 [Ben Laurie (CHATS)]
7446 *) Add assertions to prevent user-supplied crypto functions from
7447 overflowing internal buffers by having large block sizes, etc.
7448 [Ben Laurie (CHATS)]
7450 *) New OPENSSL_assert() macro (similar to assert(), but enabled
7452 [Ben Laurie (CHATS)]
7454 *) Eliminate unused copy of key in RC4.
7455 [Ben Laurie (CHATS)]
7457 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
7458 [Ben Laurie (CHATS)]
7460 *) Fix off-by-one error in EGD path.
7461 [Ben Laurie (CHATS)]
7463 *) If RANDFILE path is too long, ignore instead of truncating.
7464 [Ben Laurie (CHATS)]
7466 *) Eliminate unused and incorrectly sized X.509 structure
7468 [Ben Laurie (CHATS)]
7470 *) Eliminate unused and dangerous function knumber().
7471 [Ben Laurie (CHATS)]
7473 *) Eliminate unused and dangerous structure, KSSL_ERR.
7474 [Ben Laurie (CHATS)]
7476 *) Protect against overlong session ID context length in an encoded
7477 session object. Since these are local, this does not appear to be
7479 [Ben Laurie (CHATS)]
7481 *) Change from security patch (see 0.9.6e below) that did not affect
7482 the 0.9.6 release series:
7484 Remote buffer overflow in SSL3 protocol - an attacker could
7485 supply an oversized master key in Kerberos-enabled versions.
7487 [Ben Laurie (CHATS)]
7489 *) Change the SSL kerb5 codes to match RFC 2712.
7492 *) Make -nameopt work fully for req and add -reqopt switch.
7493 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
7495 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
7496 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
7498 *) Make sure tests can be performed even if the corresponding algorithms
7499 have been removed entirely. This was also the last step to make
7500 OpenSSL compilable with DJGPP under all reasonable conditions.
7501 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
7503 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
7504 to allow version independent disabling of normally unselected ciphers,
7505 which may be activated as a side-effect of selecting a single cipher.
7507 (E.g., cipher list string "RSA" enables ciphersuites that are left
7508 out of "ALL" because they do not provide symmetric encryption.
7509 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
7510 [Lutz Jaenicke, Bodo Moeller]
7512 *) Add appropriate support for separate platform-dependent build
7513 directories. The recommended way to make a platform-dependent
7514 build directory is the following (tested on Linux), maybe with
7517 # Place yourself outside of the OpenSSL source tree. In
7518 # this example, the environment variable OPENSSL_SOURCE
7519 # is assumed to contain the absolute OpenSSL source directory.
7520 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
7521 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
7522 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
7523 mkdir -p `dirname $F`
7524 ln -s $OPENSSL_SOURCE/$F $F
7527 To be absolutely sure not to disturb the source tree, a "make clean"
7528 is a good thing. If it isn't successful, don't worry about it,
7529 it probably means the source directory is very clean.
7532 *) Make sure any ENGINE control commands make local copies of string
7533 pointers passed to them whenever necessary. Otherwise it is possible
7534 the caller may have overwritten (or deallocated) the original string
7535 data when a later ENGINE operation tries to use the stored values.
7536 [Götz Babin-Ebell <babinebell@trustcenter.de>]
7538 *) Improve diagnostics in file reading and command-line digests.
7539 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
7541 *) Add AES modes CFB and OFB to the object database. Correct an
7542 error in AES-CFB decryption.
7545 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
7546 allows existing EVP_CIPHER_CTX structures to be reused after
7547 calling EVP_*Final(). This behaviour is used by encryption
7548 BIOs and some applications. This has the side effect that
7549 applications must explicitly clean up cipher contexts with
7550 EVP_CIPHER_CTX_cleanup() or they will leak memory.
7553 *) Check the values of dna and dnb in bn_mul_recursive before calling
7554 bn_mul_comba (a non zero value means the a or b arrays do not contain
7555 n2 elements) and fallback to bn_mul_normal if either is not zero.
7558 *) Fix escaping of non-ASCII characters when using the -subj option
7559 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
7562 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
7563 form for "surname", serialNumber has no short form.
7564 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
7565 therefore remove "mail" short name for "internet 7".
7566 The OID for unique identifiers in X509 certificates is
7567 x500UniqueIdentifier, not uniqueIdentifier.
7568 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
7571 *) Add an "init" command to the ENGINE config module and auto initialize
7572 ENGINEs. Without any "init" command the ENGINE will be initialized
7573 after all ctrl commands have been executed on it. If init=1 the
7574 ENGINE is initialized at that point (ctrls before that point are run
7575 on the uninitialized ENGINE and after on the initialized one). If
7576 init=0 then the ENGINE will not be initialized at all.
7579 *) Fix the 'app_verify_callback' interface so that the user-defined
7580 argument is actually passed to the callback: In the
7581 SSL_CTX_set_cert_verify_callback() prototype, the callback
7582 declaration has been changed from
7585 int (*cb)(X509_STORE_CTX *,void *);
7586 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
7587 i=s->ctx->app_verify_callback(&ctx)
7588 has been changed into
7589 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
7591 To update applications using SSL_CTX_set_cert_verify_callback(),
7592 a dummy argument can be added to their callback functions.
7593 [D. K. Smetters <smetters@parc.xerox.com>]
7595 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
7596 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
7598 *) Add and OPENSSL_LOAD_CONF define which will cause
7599 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
7600 This allows older applications to transparently support certain
7601 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
7602 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
7603 load the config file and OPENSSL_add_all_algorithms_conf() which will
7604 always load it have also been added.
7607 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
7608 Adjust NIDs and EVP layer.
7609 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
7611 *) Config modules support in openssl utility.
7613 Most commands now load modules from the config file,
7614 though in a few (such as version) this isn't done
7615 because it couldn't be used for anything.
7617 In the case of ca and req the config file used is
7618 the same as the utility itself: that is the -config
7619 command line option can be used to specify an
7623 *) Move default behaviour from OPENSSL_config(). If appname is NULL
7624 use "openssl_conf" if filename is NULL use default openssl config file.
7627 *) Add an argument to OPENSSL_config() to allow the use of an alternative
7628 config section name. Add a new flag to tolerate a missing config file
7629 and move code to CONF_modules_load_file().
7632 *) Support for crypto accelerator cards from Accelerated Encryption
7633 Processing, www.aep.ie. (Use engine 'aep')
7634 The support was copied from 0.9.6c [engine] and adapted/corrected
7635 to work with the new engine framework.
7636 [AEP Inc. and Richard Levitte]
7638 *) Support for SureWare crypto accelerator cards from Baltimore
7639 Technologies. (Use engine 'sureware')
7640 The support was copied from 0.9.6c [engine] and adapted
7641 to work with the new engine framework.
7644 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
7645 make the newer ENGINE framework commands for the CHIL engine work.
7646 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
7648 *) Make it possible to produce shared libraries on ReliantUNIX.
7649 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
7651 *) Add the configuration target debug-linux-ppro.
7652 Make 'openssl rsa' use the general key loading routines
7653 implemented in apps.c, and make those routines able to
7654 handle the key format FORMAT_NETSCAPE and the variant
7656 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7658 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
7659 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7661 *) Add -keyform to rsautl, and document -engine.
7662 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
7664 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
7665 BIO_R_NO_SUCH_FILE error code rather than the generic
7666 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
7669 *) Add new functions
7671 ERR_peek_last_error_line
7672 ERR_peek_last_error_line_data.
7673 These are similar to
7676 ERR_peek_error_line_data,
7677 but report on the latest error recorded rather than the first one
7678 still in the error queue.
7679 [Ben Laurie, Bodo Moeller]
7681 *) default_algorithms option in ENGINE config module. This allows things
7683 default_algorithms = ALL
7684 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
7687 *) Preliminary ENGINE config module.
7690 *) New experimental application configuration code.
7693 *) Change the AES code to follow the same name structure as all other
7694 symmetric ciphers, and behave the same way. Move everything to
7695 the directory crypto/aes, thereby obsoleting crypto/rijndael.
7696 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
7698 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
7699 [Ben Laurie and Theo de Raadt]
7701 *) Add option to output public keys in req command.
7702 [Massimiliano Pala madwolf@openca.org]
7704 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
7705 (up to about 10% better than before for P-192 and P-224).
7708 *) New functions/macros
7710 SSL_CTX_set_msg_callback(ctx, cb)
7711 SSL_CTX_set_msg_callback_arg(ctx, arg)
7712 SSL_set_msg_callback(ssl, cb)
7713 SSL_set_msg_callback_arg(ssl, arg)
7715 to request calling a callback function
7717 void cb(int write_p, int version, int content_type,
7718 const void *buf, size_t len, SSL *ssl, void *arg)
7720 whenever a protocol message has been completely received
7721 (write_p == 0) or sent (write_p == 1). Here 'version' is the
7722 protocol version according to which the SSL library interprets
7723 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
7724 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
7725 the content type as defined in the SSL 3.0/TLS 1.0 protocol
7726 specification (change_cipher_spec(20), alert(21), handshake(22)).
7727 'buf' and 'len' point to the actual message, 'ssl' to the
7728 SSL object, and 'arg' is the application-defined value set by
7729 SSL[_CTX]_set_msg_callback_arg().
7731 'openssl s_client' and 'openssl s_server' have new '-msg' options
7732 to enable a callback that displays all protocol messages.
7735 *) Change the shared library support so shared libraries are built as
7736 soon as the corresponding static library is finished, and thereby get
7737 openssl and the test programs linked against the shared library.
7738 This still only happens when the keyword "shard" has been given to
7739 the configuration scripts.
7741 NOTE: shared library support is still an experimental thing, and
7742 backward binary compatibility is still not guaranteed.
7743 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
7745 *) Add support for Subject Information Access extension.
7746 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
7748 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
7749 additional bytes when new memory had to be allocated, not just
7750 when reusing an existing buffer.
7753 *) New command line and configuration option 'utf8' for the req command.
7754 This allows field values to be specified as UTF8 strings.
7757 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
7758 runs for the former and machine-readable output for the latter.
7761 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
7762 of the e-mail address in the DN (i.e., it will go into a certificate
7763 extension only). The new configuration file option 'email_in_dn = no'
7764 has the same effect.
7765 [Massimiliano Pala madwolf@openca.org]
7767 *) Change all functions with names starting with des_ to be starting
7768 with DES_ instead. Add wrappers that are compatible with libdes,
7769 but are named _ossl_old_des_*. Finally, add macros that map the
7770 des_* symbols to the corresponding _ossl_old_des_* if libdes
7771 compatibility is desired. If OpenSSL 0.9.6c compatibility is
7772 desired, the des_* symbols will be mapped to DES_*, with one
7775 Since we provide two compatibility mappings, the user needs to
7776 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
7777 compatibility is desired. The default (i.e., when that macro
7778 isn't defined) is OpenSSL 0.9.6c compatibility.
7780 There are also macros that enable and disable the support of old
7781 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
7782 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
7783 are defined, the default will apply: to support the old des routines.
7785 In either case, one must include openssl/des.h to get the correct
7786 definitions. Do not try to just include openssl/des_old.h, that
7789 NOTE: This is a major break of an old API into a new one. Software
7790 authors are encouraged to switch to the DES_ style functions. Some
7791 time in the future, des_old.h and the libdes compatibility functions
7792 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
7793 default), and then completely removed.
7796 *) Test for certificates which contain unsupported critical extensions.
7797 If such a certificate is found during a verify operation it is
7798 rejected by default: this behaviour can be overridden by either
7799 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
7800 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
7801 X509_supported_extension() has also been added which returns 1 if a
7802 particular extension is supported.
7805 *) Modify the behaviour of EVP cipher functions in similar way to digests
7806 to retain compatibility with existing code.
7809 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
7810 compatibility with existing code. In particular the 'ctx' parameter does
7811 not have to be to be initialized before the call to EVP_DigestInit() and
7812 it is tidied up after a call to EVP_DigestFinal(). New function
7813 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
7814 EVP_MD_CTX_copy() changed to not require the destination to be
7815 initialized valid and new function EVP_MD_CTX_copy_ex() added which
7816 requires the destination to be valid.
7818 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
7819 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
7822 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
7823 so that complete 'Handshake' protocol structures are kept in memory
7824 instead of overwriting 'msg_type' and 'length' with 'body' data.
7827 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
7828 [Massimo Santin via Richard Levitte]
7830 *) Major restructuring to the underlying ENGINE code. This includes
7831 reduction of linker bloat, separation of pure "ENGINE" manipulation
7832 (initialisation, etc) from functionality dealing with implementations
7833 of specific crypto interfaces. This change also introduces integrated
7834 support for symmetric ciphers and digest implementations - so ENGINEs
7835 can now accelerate these by providing EVP_CIPHER and EVP_MD
7836 implementations of their own. This is detailed in crypto/engine/README
7837 as it couldn't be adequately described here. However, there are a few
7838 API changes worth noting - some RSA, DSA, DH, and RAND functions that
7839 were changed in the original introduction of ENGINE code have now
7840 reverted back - the hooking from this code to ENGINE is now a good
7841 deal more passive and at run-time, operations deal directly with
7842 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
7843 dereferencing through an ENGINE pointer any more. Also, the ENGINE
7844 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
7845 they were not being used by the framework as there is no concept of a
7846 BIGNUM_METHOD and they could not be generalised to the new
7847 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
7848 ENGINE_cpy() has been removed as it cannot be consistently defined in
7852 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
7855 *) Change mkdef.pl to sort symbols that get the same entry number,
7856 and make sure the automatically generated functions ERR_load_*
7857 become part of libeay.num as well.
7860 *) New function SSL_renegotiate_pending(). This returns true once
7861 renegotiation has been requested (either SSL_renegotiate() call
7862 or HelloRequest/ClientHello received from the peer) and becomes
7863 false once a handshake has been completed.
7864 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
7865 sends a HelloRequest, but does not ensure that a handshake takes
7866 place. SSL_renegotiate_pending() is useful for checking if the
7867 client has followed the request.)
7870 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
7871 By default, clients may request session resumption even during
7872 renegotiation (if session ID contexts permit); with this option,
7873 session resumption is possible only in the first handshake.
7875 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
7876 more bits available for options that should not be part of
7877 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
7880 *) Add some demos for certificate and certificate request creation.
7883 *) Make maximum certificate chain size accepted from the peer application
7884 settable (SSL*_get/set_max_cert_list()), as proposed by
7885 "Douglas E. Engert" <deengert@anl.gov>.
7888 *) Add support for shared libraries for Unixware-7
7889 (Boyd Lynn Gerber <gerberb@zenez.com>).
7892 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
7893 be done prior to destruction. Use this to unload error strings from
7894 ENGINEs that load their own error strings. NB: This adds two new API
7895 functions to "get" and "set" this destroy handler in an ENGINE.
7898 *) Alter all existing ENGINE implementations (except "openssl" and
7899 "openbsd") to dynamically instantiate their own error strings. This
7900 makes them more flexible to be built both as statically-linked ENGINEs
7901 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
7902 Also, add stub code to each that makes building them as self-contained
7903 shared-libraries easier (see README.ENGINE).
7906 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
7907 implementations into applications that are completely implemented in
7908 self-contained shared-libraries. The "dynamic" ENGINE exposes control
7909 commands that can be used to configure what shared-library to load and
7910 to control aspects of the way it is handled. Also, made an update to
7911 the README.ENGINE file that brings its information up-to-date and
7912 provides some information and instructions on the "dynamic" ENGINE
7913 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
7916 *) Make it possible to unload ranges of ERR strings with a new
7917 "ERR_unload_strings" function.
7920 *) Add a copy() function to EVP_MD.
7923 *) Make EVP_MD routines take a context pointer instead of just the
7924 md_data void pointer.
7927 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
7928 that the digest can only process a single chunk of data
7929 (typically because it is provided by a piece of
7930 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
7931 is only going to provide a single chunk of data, and hence the
7932 framework needn't accumulate the data for oneshot drivers.
7935 *) As with "ERR", make it possible to replace the underlying "ex_data"
7936 functions. This change also alters the storage and management of global
7937 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
7938 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
7939 index counters. The API functions that use this state have been changed
7940 to take a "class_index" rather than pointers to the class's local STACK
7941 and counter, and there is now an API function to dynamically create new
7942 classes. This centralisation allows us to (a) plug a lot of the
7943 thread-safety problems that existed, and (b) makes it possible to clean
7944 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
7945 such data would previously have always leaked in application code and
7946 workarounds were in place to make the memory debugging turn a blind eye
7947 to it. Application code that doesn't use this new function will still
7948 leak as before, but their memory debugging output will announce it now
7949 rather than letting it slide.
7951 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
7952 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
7953 has a return value to indicate success or failure.
7956 *) Make it possible to replace the underlying "ERR" functions such that the
7957 global state (2 LHASH tables and 2 locks) is only used by the "default"
7958 implementation. This change also adds two functions to "get" and "set"
7959 the implementation prior to it being automatically set the first time
7960 any other ERR function takes place. Ie. an application can call "get",
7961 pass the return value to a module it has just loaded, and that module
7962 can call its own "set" function using that value. This means the
7963 module's "ERR" operations will use (and modify) the error state in the
7964 application and not in its own statically linked copy of OpenSSL code.
7967 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
7968 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
7969 the operation, and provides a more encapsulated way for external code
7970 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
7971 to use these functions rather than manually incrementing the counts.
7973 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
7976 *) Add EVP test program.
7979 *) Add symmetric cipher support to ENGINE. Expect the API to change!
7982 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
7983 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
7984 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
7985 These allow a CRL to be built without having to access X509_CRL fields
7986 directly. Modify 'ca' application to use new functions.
7989 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
7990 bug workarounds. Rollback attack detection is a security feature.
7991 The problem will only arise on OpenSSL servers when TLSv1 is not
7992 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
7993 Software authors not wanting to support TLSv1 will have special reasons
7994 for their choice and can explicitly enable this option.
7995 [Bodo Moeller, Lutz Jaenicke]
7997 *) Rationalise EVP so it can be extended: don't include a union of
7998 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
7999 (similar to those existing for EVP_CIPHER_CTX).
8004 EVP_MD_CTX_init(&md); /* new function call */
8005 EVP_DigestInit(&md, EVP_sha1());
8006 EVP_DigestUpdate(&md, in, len);
8007 EVP_DigestFinal(&md, out, NULL);
8008 EVP_MD_CTX_cleanup(&md); /* new function call */
8012 *) Make DES key schedule conform to the usual scheme, as well as
8013 correcting its structure. This means that calls to DES functions
8014 now have to pass a pointer to a des_key_schedule instead of a
8015 plain des_key_schedule (which was actually always a pointer
8018 des_key_schedule ks;
8020 des_set_key_checked(..., &ks);
8021 des_ncbc_encrypt(..., &ks, ...);
8023 (Note that a later change renames 'des_...' into 'DES_...'.)
8026 *) Initial reduction of linker bloat: the use of some functions, such as
8027 PEM causes large amounts of unused functions to be linked in due to
8028 poor organisation. For example pem_all.c contains every PEM function
8029 which has a knock on effect of linking in large amounts of (unused)
8030 ASN1 code. Grouping together similar functions and splitting unrelated
8031 functions prevents this.
8034 *) Cleanup of EVP macros.
8037 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
8038 correct _ecb suffix.
8041 *) Add initial OCSP responder support to ocsp application. The
8042 revocation information is handled using the text based index
8043 use by the ca application. The responder can either handle
8044 requests generated internally, supplied in files (for example
8045 via a CGI script) or using an internal minimal server.
8048 *) Add configuration choices to get zlib compression for TLS.
8051 *) Changes to Kerberos SSL for RFC 2712 compliance:
8052 1. Implemented real KerberosWrapper, instead of just using
8053 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
8054 2. Implemented optional authenticator field of KerberosWrapper.
8056 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
8057 and authenticator structs; see crypto/krb5/.
8059 Generalized Kerberos calls to support multiple Kerberos libraries.
8060 [Vern Staats <staatsvr@asc.hpc.mil>,
8061 Jeffrey Altman <jaltman@columbia.edu>
8062 via Richard Levitte]
8064 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
8065 already does with RSA. testdsa.h now has 'priv_key/pub_key'
8066 values for each of the key sizes rather than having just
8067 parameters (and 'speed' generating keys each time).
8070 *) Speed up EVP routines.
8073 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
8074 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
8075 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
8076 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
8078 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
8079 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
8080 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
8083 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
8085 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
8088 *) Added the OS2-EMX target.
8089 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
8091 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
8092 to support NCONF routines in extension code. New function CONF_set_nconf()
8093 to allow functions which take an NCONF to also handle the old LHASH
8094 structure: this means that the old CONF compatible routines can be
8095 retained (in particular wrt extensions) without having to duplicate the
8096 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
8099 *) Enhance the general user interface with mechanisms for inner control
8100 and with possibilities to have yes/no kind of prompts.
8103 *) Change all calls to low level digest routines in the library and
8104 applications to use EVP. Add missing calls to HMAC_cleanup() and
8105 don't assume HMAC_CTX can be copied using memcpy().
8106 [Verdon Walker <VWalker@novell.com>, Steve Henson]
8108 *) Add the possibility to control engines through control names but with
8109 arbitrary arguments instead of just a string.
8110 Change the key loaders to take a UI_METHOD instead of a callback
8111 function pointer. NOTE: this breaks binary compatibility with earlier
8112 versions of OpenSSL [engine].
8113 Adapt the nCipher code for these new conditions and add a card insertion
8117 *) Enhance the general user interface with mechanisms to better support
8118 dialog box interfaces, application-defined prompts, the possibility
8119 to use defaults (for example default passwords from somewhere else)
8120 and interrupts/cancellations.
8123 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
8124 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
8127 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
8128 tidy up some unnecessarily weird code in 'sk_new()').
8129 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
8131 *) Change the key loading routines for ENGINEs to use the same kind
8132 callback (pem_password_cb) as all other routines that need this
8136 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
8137 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
8138 than this minimum value is recommended.
8141 *) New random seeder for OpenVMS, using the system process statistics
8142 that are easily reachable.
8145 *) Windows apparently can't transparently handle global
8146 variables defined in DLLs. Initialisations such as:
8148 const ASN1_ITEM *it = &ASN1_INTEGER_it;
8150 won't compile. This is used by the any applications that need to
8151 declare their own ASN1 modules. This was fixed by adding the option
8152 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
8153 needed for static libraries under Win32.
8156 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
8157 setting of purpose and trust fields. New X509_STORE trust and
8158 purpose functions and tidy up setting in other SSL functions.
8161 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
8162 structure. These are inherited by X509_STORE_CTX when it is
8163 initialised. This allows various defaults to be set in the
8164 X509_STORE structure (such as flags for CRL checking and custom
8165 purpose or trust settings) for functions which only use X509_STORE_CTX
8166 internally such as S/MIME.
8168 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
8169 trust settings if they are not set in X509_STORE. This allows X509_STORE
8170 purposes and trust (in S/MIME for example) to override any set by default.
8172 Add command line options for CRL checking to smime, s_client and s_server
8176 *) Initial CRL based revocation checking. If the CRL checking flag(s)
8177 are set then the CRL is looked up in the X509_STORE structure and
8178 its validity and signature checked, then if the certificate is found
8179 in the CRL the verify fails with a revoked error.
8181 Various new CRL related callbacks added to X509_STORE_CTX structure.
8183 Command line options added to 'verify' application to support this.
8185 This needs some additional work, such as being able to handle multiple
8186 CRLs with different times, extension based lookup (rather than just
8187 by subject name) and ultimately more complete V2 CRL extension
8191 *) Add a general user interface API (crypto/ui/). This is designed
8192 to replace things like des_read_password and friends (backward
8193 compatibility functions using this new API are provided).
8194 The purpose is to remove prompting functions from the DES code
8195 section as well as provide for prompting through dialog boxes in
8196 a window system and the like.
8199 *) Add "ex_data" support to ENGINE so implementations can add state at a
8200 per-structure level rather than having to store it globally.
8203 *) Make it possible for ENGINE structures to be copied when retrieved by
8204 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
8205 This causes the "original" ENGINE structure to act like a template,
8206 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
8207 operational state can be localised to each ENGINE structure, despite the
8208 fact they all share the same "methods". New ENGINE structures returned in
8209 this case have no functional references and the return value is the single
8210 structural reference. This matches the single structural reference returned
8211 by ENGINE_by_id() normally, when it is incremented on the pre-existing
8215 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
8216 needs to match any other type at all we need to manually clear the
8220 *) Changes to the "openssl engine" utility to include;
8221 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
8222 about an ENGINE's available control commands.
8223 - executing control commands from command line arguments using the
8224 '-pre' and '-post' switches. '-post' is only used if '-t' is
8225 specified and the ENGINE is successfully initialised. The syntax for
8226 the individual commands are colon-separated, for example;
8227 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
8230 *) New dynamic control command support for ENGINEs. ENGINEs can now
8231 declare their own commands (numbers), names (strings), descriptions,
8232 and input types for run-time discovery by calling applications. A
8233 subset of these commands are implicitly classed as "executable"
8234 depending on their input type, and only these can be invoked through
8235 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
8236 can be based on user input, config files, etc). The distinction is
8237 that "executable" commands cannot return anything other than a boolean
8238 result and can only support numeric or string input, whereas some
8239 discoverable commands may only be for direct use through
8240 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
8241 pointers, or other custom uses. The "executable" commands are to
8242 support parameterisations of ENGINE behaviour that can be
8243 unambiguously defined by ENGINEs and used consistently across any
8244 OpenSSL-based application. Commands have been added to all the
8245 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
8246 control over shared-library paths without source code alterations.
8249 *) Changed all ENGINE implementations to dynamically allocate their
8250 ENGINEs rather than declaring them statically. Apart from this being
8251 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
8252 this also allows the implementations to compile without using the
8253 internal engine_int.h header.
8256 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
8257 'const' value. Any code that should be able to modify a RAND_METHOD
8258 should already have non-const pointers to it (ie. they should only
8259 modify their own ones).
8262 *) Made a variety of little tweaks to the ENGINE code.
8263 - "atalla" and "ubsec" string definitions were moved from header files
8264 to C code. "nuron" string definitions were placed in variables
8265 rather than hard-coded - allowing parameterisation of these values
8266 later on via ctrl() commands.
8267 - Removed unused "#if 0"'d code.
8268 - Fixed engine list iteration code so it uses ENGINE_free() to release
8269 structural references.
8270 - Constified the RAND_METHOD element of ENGINE structures.
8271 - Constified various get/set functions as appropriate and added
8272 missing functions (including a catch-all ENGINE_cpy that duplicates
8273 all ENGINE values onto a new ENGINE except reference counts/state).
8274 - Removed NULL parameter checks in get/set functions. Setting a method
8275 or function to NULL is a way of cancelling out a previously set
8276 value. Passing a NULL ENGINE parameter is just plain stupid anyway
8277 and doesn't justify the extra error symbols and code.
8278 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
8279 flags from engine_int.h to engine.h.
8280 - Changed prototypes for ENGINE handler functions (init(), finish(),
8281 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
8284 *) Implement binary inversion algorithm for BN_mod_inverse in addition
8285 to the algorithm using long division. The binary algorithm can be
8286 used only if the modulus is odd. On 32-bit systems, it is faster
8287 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
8288 roughly 5-15% for 256-bit moduli), so we use it only for moduli
8289 up to 450 bits. In 64-bit environments, the binary algorithm
8290 appears to be advantageous for much longer moduli; here we use it
8291 for moduli up to 2048 bits.
8294 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
8295 could not support the combine flag in choice fields.
8298 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
8299 extensions from a certificate request to the certificate.
8302 *) Allow multiple 'certopt' and 'nameopt' options to be separated
8303 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
8304 file: this allows the display of the certificate about to be
8305 signed to be customised, to allow certain fields to be included
8306 or excluded and extension details. The old system didn't display
8307 multicharacter strings properly, omitted fields not in the policy
8308 and couldn't display additional details such as extensions.
8311 *) Function EC_POINTs_mul for multiple scalar multiplication
8312 of an arbitrary number of elliptic curve points
8313 \sum scalars[i]*points[i],
8314 optionally including the generator defined for the EC_GROUP:
8315 scalar*generator + \sum scalars[i]*points[i].
8317 EC_POINT_mul is a simple wrapper function for the typical case
8318 that the point list has just one item (besides the optional
8322 *) First EC_METHODs for curves over GF(p):
8324 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
8325 operations and provides various method functions that can also
8326 operate with faster implementations of modular arithmetic.
8328 EC_GFp_mont_method() reuses most functions that are part of
8329 EC_GFp_simple_method, but uses Montgomery arithmetic.
8331 [Bodo Moeller; point addition and point doubling
8332 implementation directly derived from source code provided by
8333 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
8335 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
8336 crypto/ec/ec_lib.c):
8338 Curves are EC_GROUP objects (with an optional group generator)
8339 based on EC_METHODs that are built into the library.
8341 Points are EC_POINT objects based on EC_GROUP objects.
8343 Most of the framework would be able to handle curves over arbitrary
8344 finite fields, but as there are no obvious types for fields other
8345 than GF(p), some functions are limited to that for now.
8348 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
8349 that the file contains a complete HTTP response.
8352 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
8353 change the def and num file printf format specifier from "%-40sXXX"
8354 to "%-39s XXX". The latter will always guarantee a space after the
8355 field while the former will cause them to run together if the field
8356 is 40 of more characters long.
8359 *) Constify the cipher and digest 'method' functions and structures
8360 and modify related functions to take constant EVP_MD and EVP_CIPHER
8364 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
8365 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
8368 *) Modify EVP_Digest*() routines so they now return values. Although the
8369 internal software routines can never fail additional hardware versions
8373 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
8375 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
8376 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
8379 ERR_R_NESTED_ASN1_ERROR
8381 ERR_R_MISSING_ASN1_EOS
8382 were 4 .. 9, conflicting with
8383 ERR_LIB_RSA (= ERR_R_RSA_LIB)
8385 ERR_LIB_PEM (= ERR_R_PEM_LIB).
8386 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
8388 Add new error code 'ERR_R_INTERNAL_ERROR'.
8391 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
8395 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
8396 sets the subject name for a new request or supersedes the
8397 subject name in a given request. Formats that can be parsed are
8398 'CN=Some Name, OU=myOU, C=IT'
8400 'CN=Some Name/OU=myOU/C=IT'.
8402 Add options '-batch' and '-verbose' to 'openssl req'.
8403 [Massimiliano Pala <madwolf@hackmasters.net>]
8405 *) Introduce the possibility to access global variables through
8406 functions on platform were that's the best way to handle exporting
8407 global variables in shared libraries. To enable this functionality,
8408 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
8409 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
8410 is normally done by Configure or something similar).
8412 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
8413 in the source file (foo.c) like this:
8415 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
8416 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
8418 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
8419 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
8421 OPENSSL_DECLARE_GLOBAL(int,foo);
8422 #define foo OPENSSL_GLOBAL_REF(foo)
8423 OPENSSL_DECLARE_GLOBAL(double,bar);
8424 #define bar OPENSSL_GLOBAL_REF(bar)
8426 The #defines are very important, and therefore so is including the
8427 header file everywhere where the defined globals are used.
8429 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
8430 of ASN.1 items, but that structure is a bit different.
8432 The largest change is in util/mkdef.pl which has been enhanced with
8433 better and easier to understand logic to choose which symbols should
8434 go into the Windows .def files as well as a number of fixes and code
8435 cleanup (among others, algorithm keywords are now sorted
8436 lexicographically to avoid constant rewrites).
8439 *) In BN_div() keep a copy of the sign of 'num' before writing the
8440 result to 'rm' because if rm==num the value will be overwritten
8441 and produce the wrong result if 'num' is negative: this caused
8442 problems with BN_mod() and BN_nnmod().
8445 *) Function OCSP_request_verify(). This checks the signature on an
8446 OCSP request and verifies the signer certificate. The signer
8447 certificate is just checked for a generic purpose and OCSP request
8451 *) Add OCSP_check_validity() function to check the validity of OCSP
8452 responses. OCSP responses are prepared in real time and may only
8453 be a few seconds old. Simply checking that the current time lies
8454 between thisUpdate and nextUpdate max reject otherwise valid responses
8455 caused by either OCSP responder or client clock inaccuracy. Instead
8456 we allow thisUpdate and nextUpdate to fall within a certain period of
8457 the current time. The age of the response can also optionally be
8458 checked. Two new options -validity_period and -status_age added to
8462 *) If signature or public key algorithm is unrecognized print out its
8463 OID rather that just UNKNOWN.
8466 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
8467 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
8468 ID to be generated from the issuer certificate alone which can then be
8469 passed to OCSP_id_issuer_cmp().
8472 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
8473 ASN1 modules to export functions returning ASN1_ITEM pointers
8474 instead of the ASN1_ITEM structures themselves. This adds several
8475 new macros which allow the underlying ASN1 function/structure to
8476 be accessed transparently. As a result code should not use ASN1_ITEM
8477 references directly (such as &X509_it) but instead use the relevant
8478 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
8479 use of the new ASN1 code on platforms where exporting structures
8480 is problematical (for example in shared libraries) but exporting
8481 functions returning pointers to structures is not.
8484 *) Add support for overriding the generation of SSL/TLS session IDs.
8485 These callbacks can be registered either in an SSL_CTX or per SSL.
8486 The purpose of this is to allow applications to control, if they wish,
8487 the arbitrary values chosen for use as session IDs, particularly as it
8488 can be useful for session caching in multiple-server environments. A
8489 command-line switch for testing this (and any client code that wishes
8490 to use such a feature) has been added to "s_server".
8491 [Geoff Thorpe, Lutz Jaenicke]
8493 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
8494 of the form '#if defined(...) || defined(...) || ...' and
8495 '#if !defined(...) && !defined(...) && ...'. This also avoids
8496 the growing number of special cases it was previously handling.
8499 *) Make all configuration macros available for application by making
8500 sure they are available in opensslconf.h, by giving them names starting
8501 with "OPENSSL_" to avoid conflicts with other packages and by making
8502 sure e_os2.h will cover all platform-specific cases together with
8504 Additionally, it is now possible to define configuration/platform-
8505 specific names (called "system identities"). In the C code, these
8506 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
8507 macro with the name beginning with "OPENSSL_SYS_", which is determined
8508 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
8512 *) New option -set_serial to 'req' and 'x509' this allows the serial
8513 number to use to be specified on the command line. Previously self
8514 signed certificates were hard coded with serial number 0 and the
8515 CA options of 'x509' had to use a serial number in a file which was
8519 *) New options to 'ca' utility to support V2 CRL entry extensions.
8520 Currently CRL reason, invalidity date and hold instruction are
8521 supported. Add new CRL extensions to V3 code and some new objects.
8524 *) New function EVP_CIPHER_CTX_set_padding() this is used to
8525 disable standard block padding (aka PKCS#5 padding) in the EVP
8526 API, which was previously mandatory. This means that the data is
8527 not padded in any way and so the total length much be a multiple
8528 of the block size, otherwise an error occurs.
8531 *) Initial (incomplete) OCSP SSL support.
8534 *) New function OCSP_parse_url(). This splits up a URL into its host,
8535 port and path components: primarily to parse OCSP URLs. New -url
8536 option to ocsp utility.
8539 *) New nonce behavior. The return value of OCSP_check_nonce() now
8540 reflects the various checks performed. Applications can decide
8541 whether to tolerate certain situations such as an absent nonce
8542 in a response when one was present in a request: the ocsp application
8543 just prints out a warning. New function OCSP_add1_basic_nonce()
8544 this is to allow responders to include a nonce in a response even if
8545 the request is nonce-less.
8548 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
8549 skipped when using openssl x509 multiple times on a single input file,
8550 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
8553 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
8554 set string type: to handle setting ASN1_TIME structures. Fix ca
8555 utility to correctly initialize revocation date of CRLs.
8558 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
8559 the clients preferred ciphersuites and rather use its own preferences.
8560 Should help to work around M$ SGC (Server Gated Cryptography) bug in
8561 Internet Explorer by ensuring unchanged hash method during stepup.
8562 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
8565 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
8566 to aes and add a new 'exist' option to print out symbols that don't
8570 *) Additional options to ocsp utility to allow flags to be set and
8571 additional certificates supplied.
8574 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
8575 OCSP client a number of certificate to only verify the response
8579 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
8580 handle the new API. Currently only ECB, CBC modes supported. Add new
8583 Add TLS AES ciphersuites as described in RFC3268, "Advanced
8584 Encryption Standard (AES) Ciphersuites for Transport Layer
8585 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
8586 not enabled by default and were not part of the "ALL" ciphersuite
8587 alias because they were not yet official; they could be
8588 explicitly requested by specifying the "AESdraft" ciphersuite
8589 group alias. In the final release of OpenSSL 0.9.7, the group
8590 alias is called "AES" and is part of "ALL".)
8591 [Ben Laurie, Steve Henson, Bodo Moeller]
8593 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
8594 request to response.
8597 *) Functions for OCSP responders. OCSP_request_onereq_count(),
8598 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
8599 extract information from a certificate request. OCSP_response_create()
8600 creates a response and optionally adds a basic response structure.
8601 OCSP_basic_add1_status() adds a complete single response to a basic
8602 response and returns the OCSP_SINGLERESP structure just added (to allow
8603 extensions to be included for example). OCSP_basic_add1_cert() adds a
8604 certificate to a basic response and OCSP_basic_sign() signs a basic
8605 response with various flags. New helper functions ASN1_TIME_check()
8606 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
8607 (converts ASN1_TIME to GeneralizedTime).
8610 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
8611 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
8612 structure from a certificate. X509_pubkey_digest() digests the public_key
8613 contents: this is used in various key identifiers.
8616 *) Make sk_sort() tolerate a NULL argument.
8617 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
8619 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
8620 passed by the function are trusted implicitly. If any of them signed the
8621 response then it is assumed to be valid and is not verified.
8624 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
8625 to data. This was previously part of the PKCS7 ASN1 code. This
8626 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
8627 [Steve Henson, reported by Kenneth R. Robinette
8628 <support@securenetterm.com>]
8630 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
8631 routines: without these tracing memory leaks is very painful.
8632 Fix leaks in PKCS12 and PKCS7 routines.
8635 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
8636 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
8637 effectively meant GeneralizedTime would never be used. Now it
8638 is initialised to -1 but X509_time_adj() now has to check the value
8639 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
8640 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
8641 [Steve Henson, reported by Kenneth R. Robinette
8642 <support@securenetterm.com>]
8644 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
8645 result in a zero length in the ASN1_INTEGER structure which was
8646 not consistent with the structure when d2i_ASN1_INTEGER() was used
8647 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
8648 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
8649 where it did not print out a minus for negative ASN1_INTEGER.
8652 *) Add summary printout to ocsp utility. The various functions which
8653 convert status values to strings have been renamed to:
8654 OCSP_response_status_str(), OCSP_cert_status_str() and
8655 OCSP_crl_reason_str() and are no longer static. New options
8656 to verify nonce values and to disable verification. OCSP response
8657 printout format cleaned up.
8660 *) Add additional OCSP certificate checks. These are those specified
8661 in RFC2560. This consists of two separate checks: the CA of the
8662 certificate being checked must either be the OCSP signer certificate
8663 or the issuer of the OCSP signer certificate. In the latter case the
8664 OCSP signer certificate must contain the OCSP signing extended key
8665 usage. This check is performed by attempting to match the OCSP
8666 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
8667 in the OCSP_CERTID structures of the response.
8670 *) Initial OCSP certificate verification added to OCSP_basic_verify()
8671 and related routines. This uses the standard OpenSSL certificate
8672 verify routines to perform initial checks (just CA validity) and
8673 to obtain the certificate chain. Then additional checks will be
8674 performed on the chain. Currently the root CA is checked to see
8675 if it is explicitly trusted for OCSP signing. This is used to set
8676 a root CA as a global signing root: that is any certificate that
8677 chains to that CA is an acceptable OCSP signing certificate.
8680 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
8681 extensions from a separate configuration file.
8682 As when reading extensions from the main configuration file,
8683 the '-extensions ...' option may be used for specifying the
8685 [Massimiliano Pala <madwolf@comune.modena.it>]
8687 *) New OCSP utility. Allows OCSP requests to be generated or
8688 read. The request can be sent to a responder and the output
8689 parsed, outputed or printed in text form. Not complete yet:
8690 still needs to check the OCSP response validity.
8693 *) New subcommands for 'openssl ca':
8694 'openssl ca -status <serial>' prints the status of the cert with
8695 the given serial number (according to the index file).
8696 'openssl ca -updatedb' updates the expiry status of certificates
8698 [Massimiliano Pala <madwolf@comune.modena.it>]
8700 *) New '-newreq-nodes' command option to CA.pl. This is like
8701 '-newreq', but calls 'openssl req' with the '-nodes' option
8702 so that the resulting key is not encrypted.
8703 [Damien Miller <djm@mindrot.org>]
8705 *) New configuration for the GNU Hurd.
8706 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
8708 *) Initial code to implement OCSP basic response verify. This
8709 is currently incomplete. Currently just finds the signer's
8710 certificate and verifies the signature on the response.
8713 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
8714 value of OPENSSLDIR. This is available via the new '-d' option
8715 to 'openssl version', and is also included in 'openssl version -a'.
8718 *) Allowing defining memory allocation callbacks that will be given
8719 file name and line number information in additional arguments
8720 (a const char* and an int). The basic functionality remains, as
8721 well as the original possibility to just replace malloc(),
8722 realloc() and free() by functions that do not know about these
8723 additional arguments. To register and find out the current
8724 settings for extended allocation functions, the following
8725 functions are provided:
8727 CRYPTO_set_mem_ex_functions
8728 CRYPTO_set_locked_mem_ex_functions
8729 CRYPTO_get_mem_ex_functions
8730 CRYPTO_get_locked_mem_ex_functions
8732 These work the same way as CRYPTO_set_mem_functions and friends.
8733 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
8734 extended allocation function is enabled.
8735 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
8736 a conventional allocation function is enabled.
8737 [Richard Levitte, Bodo Moeller]
8739 *) Finish off removing the remaining LHASH function pointer casts.
8740 There should no longer be any prototype-casting required when using
8741 the LHASH abstraction, and any casts that remain are "bugs". See
8742 the callback types and macros at the head of lhash.h for details
8743 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
8746 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
8747 If /dev/[u]random devices are not available or do not return enough
8748 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
8750 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
8751 /etc/entropy will be queried once each in this sequence, querying stops
8752 when enough entropy was collected without querying more sockets.
8755 *) Change the Unix RAND_poll() variant to be able to poll several
8756 random devices, as specified by DEVRANDOM, until a sufficient amount
8757 of data has been collected. We spend at most 10 ms on each file
8758 (select timeout) and read in non-blocking mode. DEVRANDOM now
8759 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
8760 (previously it was just the string "/dev/urandom"), so on typical
8761 platforms the 10 ms delay will never occur.
8762 Also separate out the Unix variant to its own file, rand_unix.c.
8763 For VMS, there's a currently-empty rand_vms.c.
8766 *) Move OCSP client related routines to ocsp_cl.c. These
8767 provide utility functions which an application needing
8768 to issue a request to an OCSP responder and analyse the
8769 response will typically need: as opposed to those which an
8770 OCSP responder itself would need which will be added later.
8772 OCSP_request_sign() signs an OCSP request with an API similar
8773 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
8774 response. OCSP_response_get1_basic() extracts basic response
8775 from response. OCSP_resp_find_status(): finds and extracts status
8776 information from an OCSP_CERTID structure (which will be created
8777 when the request structure is built). These are built from lower
8778 level functions which work on OCSP_SINGLERESP structures but
8779 won't normally be used unless the application wishes to examine
8780 extensions in the OCSP response for example.
8782 Replace nonce routines with a pair of functions.
8783 OCSP_request_add1_nonce() adds a nonce value and optionally
8784 generates a random value. OCSP_check_nonce() checks the
8785 validity of the nonce in an OCSP response.
8788 *) Change function OCSP_request_add() to OCSP_request_add0_id().
8789 This doesn't copy the supplied OCSP_CERTID and avoids the
8790 need to free up the newly created id. Change return type
8791 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
8792 This can then be used to add extensions to the request.
8793 Deleted OCSP_request_new(), since most of its functionality
8794 is now in OCSP_REQUEST_new() (and the case insensitive name
8795 clash) apart from the ability to set the request name which
8796 will be added elsewhere.
8799 *) Update OCSP API. Remove obsolete extensions argument from
8800 various functions. Extensions are now handled using the new
8801 OCSP extension code. New simple OCSP HTTP function which
8802 can be used to send requests and parse the response.
8805 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
8806 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
8807 uses the special reorder version of SET OF to sort the attributes
8808 and reorder them to match the encoded order. This resolves a long
8809 standing problem: a verify on a PKCS7 structure just after signing
8810 it used to fail because the attribute order did not match the
8811 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
8812 it uses the received order. This is necessary to tolerate some broken
8813 software that does not order SET OF. This is handled by encoding
8814 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
8815 to produce the required SET OF.
8818 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
8819 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
8820 files to get correct declarations of the ASN.1 item variables.
8823 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
8824 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
8825 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
8826 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
8827 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
8828 ASN1_ITEM and no wrapper functions.
8831 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
8832 replace the old function pointer based I/O routines. Change most of
8833 the *_d2i_bio() and *_d2i_fp() functions to use these.
8836 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
8837 lines, recognize more "algorithms" that can be deselected, and make
8838 it complain about algorithm deselection that isn't recognised.
8841 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
8842 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
8843 to use new functions. Add NO_ASN1_OLD which can be set to remove
8844 some old style ASN1 functions: this can be used to determine if old
8845 code will still work when these eventually go away.
8848 *) New extension functions for OCSP structures, these follow the
8849 same conventions as certificates and CRLs.
8852 *) New function X509V3_add1_i2d(). This automatically encodes and
8853 adds an extension. Its behaviour can be customised with various
8854 flags to append, replace or delete. Various wrappers added for
8855 certificates and CRLs.
8858 *) Fix to avoid calling the underlying ASN1 print routine when
8859 an extension cannot be parsed. Correct a typo in the
8860 OCSP_SERVICELOC extension. Tidy up print OCSP format.
8863 *) Make mkdef.pl parse some of the ASN1 macros and add appropriate
8864 entries for variables.
8867 *) Add functionality to apps/openssl.c for detecting locking
8868 problems: As the program is single-threaded, all we have
8869 to do is register a locking callback using an array for
8870 storing which locks are currently held by the program.
8873 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
8874 SSL_get_ex_data_X509_STORE_idx(), which is used in
8875 ssl_verify_cert_chain() and thus can be called at any time
8876 during TLS/SSL handshakes so that thread-safety is essential.
8877 Unfortunately, the ex_data design is not at all suited
8878 for multi-threaded use, so it probably should be abolished.
8881 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
8882 [Broadcom, tweaked and integrated by Geoff Thorpe]
8884 *) Move common extension printing code to new function
8885 X509V3_print_extensions(). Reorganise OCSP print routines and
8886 implement some needed OCSP ASN1 functions. Add OCSP extensions.
8889 *) New function X509_signature_print() to remove duplication in some
8893 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
8894 set (this was treated exactly the same as SET OF previously). This
8895 is used to reorder the STACK representing the structure to match the
8896 encoding. This will be used to get round a problem where a PKCS7
8897 structure which was signed could not be verified because the STACK
8898 order did not reflect the encoded order.
8901 *) Reimplement the OCSP ASN1 module using the new code.
8904 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
8905 for its ASN1 operations. The old style function pointers still exist
8906 for now but they will eventually go away.
8909 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
8910 completely replaces the old ASN1 functionality with a table driven
8911 encoder and decoder which interprets an ASN1_ITEM structure describing
8912 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
8913 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
8914 has also been converted to the new form.
8917 *) Change BN_mod_exp_recp so that negative moduli are tolerated
8918 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
8919 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
8920 for negative moduli.
8923 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
8924 of not touching the result's sign bit.
8927 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
8931 *) Changed the LHASH code to use prototypes for callbacks, and created
8932 macros to declare and implement thin (optionally static) functions
8933 that provide type-safety and avoid function pointer casting for the
8934 type-specific callbacks.
8937 *) Added Kerberos Cipher Suites to be used with TLS, as written in
8939 [Veers Staats <staatsvr@asc.hpc.mil>,
8940 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
8942 *) Reformat the FAQ so the different questions and answers can be divided
8943 in sections depending on the subject.
8946 *) Have the zlib compression code load ZLIB.DLL dynamically under
8950 *) New function BN_mod_sqrt for computing square roots modulo a prime
8951 (using the probabilistic Tonelli-Shanks algorithm unless
8952 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
8953 be handled deterministically).
8954 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
8956 *) Make BN_mod_inverse faster by explicitly handling small quotients
8957 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
8958 512 bits], about 30% for larger ones [1024 or 2048 bits].)
8961 *) New function BN_kronecker.
8964 *) Fix BN_gcd so that it works on negative inputs; the result is
8965 positive unless both parameters are zero.
8966 Previously something reasonably close to an infinite loop was
8967 possible because numbers could be growing instead of shrinking
8968 in the implementation of Euclid's algorithm.
8971 *) Fix BN_is_word() and BN_is_one() macros to take into account the
8972 sign of the number in question.
8974 Fix BN_is_word(a,w) to work correctly for w == 0.
8976 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
8977 because its test if the absolute value of 'a' equals 'w'.
8978 Note that BN_abs_is_word does *not* handle w == 0 reliably;
8979 it exists mostly for use in the implementations of BN_is_zero(),
8980 BN_is_one(), and BN_is_word().
8983 *) New function BN_swap.
8986 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
8987 the exponentiation functions are more likely to produce reasonable
8988 results on negative inputs.
8991 *) Change BN_mod_mul so that the result is always non-negative.
8992 Previously, it could be negative if one of the factors was negative;
8993 I don't think anyone really wanted that behaviour.
8996 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
8997 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
8998 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
8999 and add new functions:
9008 BN_mod_lshift1_quick
9012 These functions always generate non-negative results.
9014 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
9015 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
9017 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
9018 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
9019 be reduced modulo m.
9020 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
9023 The following entry accidentally appeared in the CHANGES file
9024 distributed with OpenSSL 0.9.7. The modifications described in
9025 it do *not* apply to OpenSSL 0.9.7.
9027 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
9028 was actually never needed) and in BN_mul(). The removal in BN_mul()
9029 required a small change in bn_mul_part_recursive() and the addition
9030 of the functions bn_cmp_part_words(), bn_sub_part_words() and
9031 bn_add_part_words(), which do the same thing as bn_cmp_words(),
9032 bn_sub_words() and bn_add_words() except they take arrays with
9037 *) In 'openssl passwd', verify passwords read from the terminal
9038 unless the '-salt' option is used (which usually means that
9039 verification would just waste user's time since the resulting
9040 hash is going to be compared with some given password hash)
9041 or the new '-noverify' option is used.
9043 This is an incompatible change, but it does not affect
9044 non-interactive use of 'openssl passwd' (passwords on the command
9045 line, '-stdin' option, '-in ...' option) and thus should not
9049 *) Remove all references to RSAref, since there's no more need for it.
9052 *) Make DSO load along a path given through an environment variable
9053 (SHLIB_PATH) with shl_load().
9056 *) Constify the ENGINE code as a result of BIGNUM constification.
9057 Also constify the RSA code and most things related to it. In a
9058 few places, most notable in the depth of the ASN.1 code, ugly
9059 casts back to non-const were required (to be solved at a later
9063 *) Make it so the openssl application has all engines loaded by default.
9066 *) Constify the BIGNUM routines a little more.
9069 *) Add the following functions:
9071 ENGINE_load_cswift()
9073 ENGINE_load_atalla()
9075 ENGINE_load_builtin_engines()
9077 That way, an application can itself choose if external engines that
9078 are built-in in OpenSSL shall ever be used or not. The benefit is
9079 that applications won't have to be linked with libdl or other dso
9080 libraries unless it's really needed.
9082 Changed 'openssl engine' to load all engines on demand.
9083 Changed the engine header files to avoid the duplication of some
9084 declarations (they differed!).
9087 *) 'openssl engine' can now list capabilities.
9090 *) Better error reporting in 'openssl engine'.
9093 *) Never call load_dh_param(NULL) in s_server.
9096 *) Add engine application. It can currently list engines by name and
9097 identity, and test if they are actually available.
9100 *) Improve RPM specification file by forcing symbolic linking and making
9101 sure the installed documentation is also owned by root.root.
9102 [Damien Miller <djm@mindrot.org>]
9104 *) Give the OpenSSL applications more possibilities to make use of
9105 keys (public as well as private) handled by engines.
9108 *) Add OCSP code that comes from CertCo.
9111 *) Add VMS support for the Rijndael code.
9114 *) Added untested support for Nuron crypto accelerator.
9117 *) Add support for external cryptographic devices. This code was
9118 previously distributed separately as the "engine" branch.
9119 [Geoff Thorpe, Richard Levitte]
9121 *) Rework the filename-translation in the DSO code. It is now possible to
9122 have far greater control over how a "name" is turned into a filename
9123 depending on the operating environment and any oddities about the
9124 different shared library filenames on each system.
9127 *) Support threads on FreeBSD-elf in Configure.
9130 *) Fix for SHA1 assembly problem with MASM: it produces
9131 warnings about corrupt line number information when assembling
9132 with debugging information. This is caused by the overlapping
9134 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
9137 NCONF_get_number() has no error checking at all. As a replacement,
9138 NCONF_get_number_e() is defined (_e for "error checking") and is
9139 promoted strongly. The old NCONF_get_number is kept around for
9140 binary backward compatibility.
9141 Make it possible for methods to load from something other than a BIO,
9142 by providing a function pointer that is given a name instead of a BIO.
9143 For example, this could be used to load configuration data from an
9147 *) Fix for non blocking accept BIOs. Added new I/O special reason
9148 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
9149 with non blocking I/O was not possible because no retry code was
9150 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
9154 *) Added the beginnings of Rijndael support.
9157 *) Fix for bug in DirectoryString mask setting. Add support for
9158 X509_NAME_print_ex() in 'req' and X509_print_ex() function
9159 to allow certificate printing to more controllable, additional
9160 'certopt' option to 'x509' to allow new printing options to be
9164 *) Clean old EAY MD5 hack from e_os.h.
9167 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
9169 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
9170 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
9171 [Joe Orton, Steve Henson]
9173 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
9175 *) Fix additional bug revealed by the NISCC test suite:
9177 Stop bug triggering large recursion when presented with
9178 certain ASN.1 tags (CVE-2003-0851)
9181 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
9183 *) Fix various bugs revealed by running the NISCC test suite:
9185 Stop out of bounds reads in the ASN1 code when presented with
9186 invalid tags (CVE-2003-0543 and CVE-2003-0544).
9188 If verify callback ignores invalid public key errors don't try to check
9189 certificate signature with the NULL public key.
9193 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
9194 if the server requested one: as stated in TLS 1.0 and SSL 3.0
9198 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
9199 extra data after the compression methods not only for TLS 1.0
9200 but also for SSL 3.0 (as required by the specification).
9201 [Bodo Moeller; problem pointed out by Matthias Loepfe]
9203 *) Change X509_certificate_type() to mark the key as exported/exportable
9204 when it's 512 *bits* long, not 512 bytes.
9207 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
9209 *) Countermeasure against the Klima-Pokorny-Rosa extension of
9210 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
9211 a protocol version number mismatch like a decryption error
9212 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
9215 *) Turn on RSA blinding by default in the default implementation
9216 to avoid a timing attack. Applications that don't want it can call
9217 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
9218 They would be ill-advised to do so in most cases.
9219 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
9221 *) Change RSA blinding code so that it works when the PRNG is not
9222 seeded (in this case, the secret RSA exponent is abused as
9223 an unpredictable seed -- if it is not unpredictable, there
9224 is no point in blinding anyway). Make RSA blinding thread-safe
9225 by remembering the creator's thread ID in rsa->blinding and
9226 having all other threads use local one-time blinding factors
9227 (this requires more computation than sharing rsa->blinding, but
9228 avoids excessive locking; and if an RSA object is not shared
9229 between threads, blinding will still be very fast).
9232 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
9234 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
9235 via timing by performing a MAC computation even if incorrect
9236 block cipher padding has been found. This is a countermeasure
9237 against active attacks where the attacker has to distinguish
9238 between bad padding and a MAC verification error. (CVE-2003-0078)
9240 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
9241 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
9242 Martin Vuagnoux (EPFL, Ilion)]
9244 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
9246 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
9247 memory from its contents. This is done with a counter that will
9248 place alternating values in each byte. This can be used to solve
9249 two issues: 1) the removal of calls to memset() by highly optimizing
9250 compilers, and 2) cleansing with other values than 0, since those can
9251 be read through on certain media, for example a swap space on disk.
9254 *) Bugfix: client side session caching did not work with external caching,
9255 because the session->cipher setting was not restored when reloading
9256 from the external cache. This problem was masked, when
9257 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
9258 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
9261 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
9262 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
9263 [Zeev Lieber <zeev-l@yahoo.com>]
9265 *) Undo an undocumented change introduced in 0.9.6e which caused
9266 repeated calls to OpenSSL_add_all_ciphers() and
9267 OpenSSL_add_all_digests() to be ignored, even after calling
9271 *) Change the default configuration reader to deal with last line not
9272 being properly terminated.
9275 *) Change X509_NAME_cmp() so it applies the special rules on handling
9276 DN values that are of type PrintableString, as well as RDNs of type
9277 emailAddress where the value has the type ia5String.
9278 [stefank@valicert.com via Richard Levitte]
9280 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
9281 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
9282 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
9283 the bitwise-OR of the two for use by the majority of applications
9284 wanting this behaviour, and update the docs. The documented
9285 behaviour and actual behaviour were inconsistent and had been
9286 changing anyway, so this is more a bug-fix than a behavioural
9288 [Geoff Thorpe, diagnosed by Nadav Har'El]
9290 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
9291 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
9294 *) Fix initialization code race conditions in
9295 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
9296 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
9297 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
9298 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
9299 ssl2_get_cipher_by_char(),
9300 ssl3_get_cipher_by_char().
9301 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
9303 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
9304 the cached sessions are flushed, as the remove_cb() might use ex_data
9305 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
9306 (see [openssl.org #212]).
9307 [Geoff Thorpe, Lutz Jaenicke]
9309 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
9310 length, instead of the encoding length to d2i_ASN1_OBJECT.
9313 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
9315 *) [In 0.9.6g-engine release:]
9316 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
9317 [Lynn Gazis <lgazis@rainbow.com>]
9319 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
9321 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
9322 and get fix the header length calculation.
9323 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
9324 Alon Kantor <alonk@checkpoint.com> (and others),
9327 *) Use proper error handling instead of 'assertions' in buffer
9328 overflow checks added in 0.9.6e. This prevents DoS (the
9329 assertions could call abort()).
9330 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
9332 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
9334 *) Add various sanity checks to asn1_get_length() to reject
9335 the ASN1 length bytes if they exceed sizeof(long), will appear
9336 negative or the content length exceeds the length of the
9338 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
9340 *) Fix cipher selection routines: ciphers without encryption had no flags
9341 for the cipher strength set and where therefore not handled correctly
9342 by the selection routines (PR #130).
9345 *) Fix EVP_dsa_sha macro.
9349 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
9350 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
9351 that was added in OpenSSL 0.9.6d.
9353 As the countermeasure turned out to be incompatible with some
9354 broken SSL implementations, the new option is part of SSL_OP_ALL.
9355 SSL_OP_ALL is usually employed when compatibility with weird SSL
9356 implementations is desired (e.g. '-bugs' option to 's_client' and
9357 's_server'), so the new option is automatically set in many
9361 *) Changes in security patch:
9363 Changes marked "(CHATS)" were sponsored by the Defense Advanced
9364 Research Projects Agency (DARPA) and Air Force Research Laboratory,
9365 Air Force Materiel Command, USAF, under agreement number
9368 *) Add various sanity checks to asn1_get_length() to reject
9369 the ASN1 length bytes if they exceed sizeof(long), will appear
9370 negative or the content length exceeds the length of the
9371 supplied buffer. (CVE-2002-0659)
9372 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
9374 *) Assertions for various potential buffer overflows, not known to
9376 [Ben Laurie (CHATS)]
9378 *) Various temporary buffers to hold ASCII versions of integers were
9379 too small for 64 bit platforms. (CVE-2002-0655)
9380 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
9382 *) Remote buffer overflow in SSL3 protocol - an attacker could
9383 supply an oversized session ID to a client. (CVE-2002-0656)
9384 [Ben Laurie (CHATS)]
9386 *) Remote buffer overflow in SSL2 protocol - an attacker could
9387 supply an oversized client master key. (CVE-2002-0656)
9388 [Ben Laurie (CHATS)]
9390 Changes between 0.9.6c and 0.9.6d [9 May 2002]
9392 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
9393 encoded as NULL) with id-dsa-with-sha1.
9394 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
9396 *) Check various X509_...() return values in apps/req.c.
9397 [Nils Larsch <nla@trustcenter.de>]
9399 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
9400 an end-of-file condition would erroneously be flagged, when the CRLF
9401 was just at the end of a processed block. The bug was discovered when
9402 processing data through a buffering memory BIO handing the data to a
9403 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
9404 <ptsekov@syntrex.com> and Nedelcho Stanev.
9407 *) Implement a countermeasure against a vulnerability recently found
9408 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
9409 before application data chunks to avoid the use of known IVs
9410 with data potentially chosen by the attacker.
9413 *) Fix length checks in ssl3_get_client_hello().
9416 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
9417 to prevent ssl3_read_internal() from incorrectly assuming that
9418 ssl3_read_bytes() found application data while handshake
9419 processing was enabled when in fact s->s3->in_read_app_data was
9420 merely automatically cleared during the initial handshake.
9421 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
9423 *) Fix object definitions for Private and Enterprise: they were not
9424 recognized in their shortname (=lowercase) representation. Extend
9425 obj_dat.pl to issue an error when using undefined keywords instead
9426 of silently ignoring the problem (Svenning Sorensen
9427 <sss@sss.dnsalias.net>).
9430 *) Fix DH_generate_parameters() so that it works for 'non-standard'
9431 generators, i.e. generators other than 2 and 5. (Previously, the
9432 code did not properly initialise the 'add' and 'rem' values to
9433 BN_generate_prime().)
9435 In the new general case, we do not insist that 'generator' is
9436 actually a primitive root: This requirement is rather pointless;
9437 a generator of the order-q subgroup is just as good, if not
9441 *) Map new X509 verification errors to alerts. Discovered and submitted by
9442 Tom Wu <tom@arcot.com>.
9445 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
9446 returning non-zero before the data has been completely received
9447 when using non-blocking I/O.
9448 [Bodo Moeller; problem pointed out by John Hughes]
9450 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
9451 [Ben Laurie, Lutz Jaenicke]
9453 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
9454 Yoram Zahavi <YoramZ@gilian.com>).
9457 *) Add information about CygWin 1.3 and on, and preserve proper
9458 configuration for the versions before that.
9459 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
9461 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
9462 check whether we deal with a copy of a session and do not delete from
9463 the cache in this case. Problem reported by "Izhar Shoshani Levi"
9464 <izhar@checkpoint.com>.
9467 *) Do not store session data into the internal session cache, if it
9468 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
9469 flag is set). Proposed by Aslam <aslam@funk.com>.
9472 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
9476 *) [In 0.9.6d-engine release:]
9477 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
9478 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
9480 *) Add the configuration target linux-s390x.
9481 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
9483 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
9484 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
9485 variable as an indication that a ClientHello message has been
9486 received. As the flag value will be lost between multiple
9487 invocations of ssl3_accept when using non-blocking I/O, the
9488 function may not be aware that a handshake has actually taken
9489 place, thus preventing a new session from being added to the
9492 To avoid this problem, we now set s->new_session to 2 instead of
9493 using a local variable.
9494 [Lutz Jaenicke, Bodo Moeller]
9496 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
9497 if the SSL_R_LENGTH_MISMATCH error is detected.
9498 [Geoff Thorpe, Bodo Moeller]
9500 *) New 'shared_ldflag' column in Configure platform table.
9503 *) Fix EVP_CIPHER_mode macro.
9504 ["Dan S. Camper" <dan@bti.net>]
9506 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
9507 type, we must throw them away by setting rr->length to 0.
9508 [D P Chang <dpc@qualys.com>]
9510 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
9512 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
9513 <Dominikus.Scherkl@biodata.com>. (The previous implementation
9514 worked incorrectly for those cases where range = 10..._2 and
9515 3*range is two bits longer than range.)
9518 *) Only add signing time to PKCS7 structures if it is not already
9522 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
9523 OBJ_ld_ce should be OBJ_id_ce.
9524 Also some ip-pda OIDs in crypto/objects/objects.txt were
9525 incorrect (cf. RFC 3039).
9526 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
9528 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
9529 returns early because it has nothing to do.
9530 [Andy Schneider <andy.schneider@bjss.co.uk>]
9532 *) [In 0.9.6c-engine release:]
9533 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
9534 [Andy Schneider <andy.schneider@bjss.co.uk>]
9536 *) [In 0.9.6c-engine release:]
9537 Add support for Cryptographic Appliance's keyserver technology.
9538 (Use engine 'keyclient')
9539 [Cryptographic Appliances and Geoff Thorpe]
9541 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
9542 is called via tools/c89.sh because arguments have to be
9543 rearranged (all '-L' options must appear before the first object
9545 [Richard Shapiro <rshapiro@abinitio.com>]
9547 *) [In 0.9.6c-engine release:]
9548 Add support for Broadcom crypto accelerator cards, backported
9550 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
9552 *) [In 0.9.6c-engine release:]
9553 Add support for SureWare crypto accelerator cards from
9554 Baltimore Technologies. (Use engine 'sureware')
9555 [Baltimore Technologies and Mark Cox]
9557 *) [In 0.9.6c-engine release:]
9558 Add support for crypto accelerator cards from Accelerated
9559 Encryption Processing, www.aep.ie. (Use engine 'aep')
9560 [AEP Inc. and Mark Cox]
9562 *) Add a configuration entry for gcc on UnixWare.
9563 [Gary Benson <gbenson@redhat.com>]
9565 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
9566 messages are stored in a single piece (fixed-length part and
9567 variable-length part combined) and fix various bugs found on the way.
9570 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
9571 instead. BIO_gethostbyname() does not know what timeouts are
9572 appropriate, so entries would stay in cache even when they have
9574 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
9576 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
9577 faced with a pathologically small ClientHello fragment that does
9578 not contain client_version: Instead of aborting with an error,
9579 simply choose the highest available protocol version (i.e.,
9580 TLS 1.0 unless it is disabled). In practice, ClientHello
9581 messages are never sent like this, but this change gives us
9582 strictly correct behaviour at least for TLS.
9585 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
9586 never resets s->method to s->ctx->method when called from within
9587 one of the SSL handshake functions.
9588 [Bodo Moeller; problem pointed out by Niko Baric]
9590 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
9591 (sent using the client's version number) if client_version is
9592 smaller than the protocol version in use. Also change
9593 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
9594 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
9595 the client will at least see that alert.
9598 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
9602 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
9603 client receives HelloRequest while in a handshake.
9604 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
9606 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
9607 should end in 'break', not 'goto end' which circumvents various
9608 cleanups done in state SSL_ST_OK. But session related stuff
9609 must be disabled for SSL_ST_OK in the case that we just sent a
9612 Also avoid some overhead by not calling ssl_init_wbio_buffer()
9613 before just sending a HelloRequest.
9614 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
9616 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
9617 reveal whether illegal block cipher padding was found or a MAC
9618 verification error occurred. (Neither SSLerr() codes nor alerts
9619 are directly visible to potential attackers, but the information
9620 may leak via logfiles.)
9622 Similar changes are not required for the SSL 2.0 implementation
9623 because the number of padding bytes is sent in clear for SSL 2.0,
9624 and the extra bytes are just ignored. However ssl/s2_pkt.c
9625 failed to verify that the purported number of padding bytes is in
9629 *) Add OpenUNIX-8 support including shared libraries
9630 (Boyd Lynn Gerber <gerberb@zenez.com>).
9633 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
9634 'wristwatch attack' using huge encoding parameters (cf.
9635 James H. Manger's CRYPTO 2001 paper). Note that the
9636 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
9637 encoding parameters and hence was not vulnerable.
9640 *) BN_sqr() bug fix.
9641 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
9643 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
9644 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
9645 followed by modular reduction.
9646 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
9648 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
9649 equivalent based on BN_pseudo_rand() instead of BN_rand().
9652 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
9653 This function was broken, as the check for a new client hello message
9654 to handle SGC did not allow these large messages.
9655 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
9658 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
9661 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
9662 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
9665 *) Rework the configuration and shared library support for Tru64 Unix.
9666 The configuration part makes use of modern compiler features and
9667 still retains old compiler behavior for those that run older versions
9668 of the OS. The shared library support part includes a variant that
9669 uses the RPATH feature, and is available through the special
9670 configuration target "alpha-cc-rpath", which will never be selected
9672 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
9674 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
9675 with the same message size as in ssl3_get_certificate_request().
9676 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
9677 messages might inadvertently be reject as too long.
9678 [Petr Lampa <lampa@fee.vutbr.cz>]
9680 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
9683 *) Modified SSL library such that the verify_callback that has been set
9684 specificly for an SSL object with SSL_set_verify() is actually being
9685 used. Before the change, a verify_callback set with this function was
9686 ignored and the verify_callback() set in the SSL_CTX at the time of
9687 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
9688 to allow the necessary settings.
9691 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
9692 explicitly to NULL, as at least on Solaris 8 this seems not always to be
9693 done automatically (in contradiction to the requirements of the C
9694 standard). This made problems when used from OpenSSH.
9697 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
9698 dh->length and always used
9700 BN_rand_range(priv_key, dh->p).
9702 BN_rand_range() is not necessary for Diffie-Hellman, and this
9703 specific range makes Diffie-Hellman unnecessarily inefficient if
9704 dh->length (recommended exponent length) is much smaller than the
9705 length of dh->p. We could use BN_rand_range() if the order of
9706 the subgroup was stored in the DH structure, but we only have
9711 BN_rand(priv_key, l, ...)
9713 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
9719 RSA_eay_public_encrypt
9720 RSA_eay_private_decrypt
9721 RSA_eay_private_encrypt (signing)
9722 RSA_eay_public_decrypt (signature verification)
9724 (default implementations for RSA_public_encrypt,
9725 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
9726 always reject numbers >= n.
9729 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
9730 to synchronize access to 'locking_thread'. This is necessary on
9731 systems where access to 'locking_thread' (an 'unsigned long'
9732 variable) is not atomic.
9735 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
9736 *before* setting the 'crypto_lock_rand' flag. The previous code had
9737 a race condition if 0 is a valid thread ID.
9738 [Travis Vitek <vitek@roguewave.com>]
9740 *) Add support for shared libraries under Irix.
9741 [Albert Chin-A-Young <china@thewrittenword.com>]
9743 *) Add configuration option to build on Linux on both big-endian and
9745 [Ralf Baechle <ralf@uni-koblenz.de>]
9747 *) Add the possibility to create shared libraries on HP-UX.
9750 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
9752 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
9753 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
9754 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
9755 PRNG state recovery was possible based on the output of
9756 one PRNG request appropriately sized to gain knowledge on
9757 'md' followed by enough consecutive 1-byte PRNG requests
9758 to traverse all of 'state'.
9760 1. When updating 'md_local' (the current thread's copy of 'md')
9761 during PRNG output generation, hash all of the previous
9762 'md_local' value, not just the half used for PRNG output.
9764 2. Make the number of bytes from 'state' included into the hash
9765 independent from the number of PRNG bytes requested.
9767 The first measure alone would be sufficient to avoid
9768 Markku-Juhani's attack. (Actually it had never occurred
9769 to me that the half of 'md_local' used for chaining was the
9770 half from which PRNG output bytes were taken -- I had always
9771 assumed that the secret half would be used.) The second
9772 measure makes sure that additional data from 'state' is never
9773 mixed into 'md_local' in small portions; this heuristically
9774 further strengthens the PRNG.
9777 *) Fix crypto/bn/asm/mips3.s.
9780 *) When only the key is given to "enc", the IV is undefined. Print out
9781 an error message in this case.
9784 *) Handle special case when X509_NAME is empty in X509 printing routines.
9787 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
9788 positive and less than q.
9791 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
9792 used: it isn't thread safe and the add_lock_callback should handle
9794 [Paul Rose <Paul.Rose@bridge.com>]
9796 *) Verify that incoming data obeys the block size in
9797 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
9801 [Ulf Möller, Bodo Möller]
9803 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
9804 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
9805 when fixing the server behaviour for backwards-compatible 'client
9806 hello' messages. (Note that the attack is impractical against
9807 SSL 3.0 and TLS 1.0 anyway because length and version checking
9808 means that the probability of guessing a valid ciphertext is
9809 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
9812 Before 0.9.5, the countermeasure (hide the error by generating a
9813 random 'decryption result') did not work properly because
9814 ERR_clear_error() was missing, meaning that SSL_get_error() would
9815 detect the supposedly ignored error.
9817 Both problems are now fixed.
9820 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
9821 (previously it was 1024).
9824 *) Fix for compatibility mode trust settings: ignore trust settings
9825 unless some valid trust or reject settings are present.
9828 *) Fix for blowfish EVP: its a variable length cipher.
9831 *) Fix various bugs related to DSA S/MIME verification. Handle missing
9832 parameters in DSA public key structures and return an error in the
9833 DSA routines if parameters are absent.
9836 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
9837 in the current directory if neither $RANDFILE nor $HOME was set.
9838 RAND_file_name() in 0.9.6a returned NULL in this case. This has
9839 caused some confusion to Windows users who haven't defined $HOME.
9840 Thus RAND_file_name() is changed again: e_os.h can define a
9841 DEFAULT_HOME, which will be used if $HOME is not set.
9842 For Windows, we use "C:"; on other platforms, we still require
9843 environment variables.
9845 *) Move 'if (!initialized) RAND_poll()' into regions protected by
9846 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
9847 having multiple threads call RAND_poll() concurrently.
9850 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
9851 combination of a flag and a thread ID variable.
9852 Otherwise while one thread is in ssleay_rand_bytes (which sets the
9853 flag), *other* threads can enter ssleay_add_bytes without obeying
9854 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
9855 that they do not hold after the first thread unsets add_do_not_lock).
9858 *) Change bctest again: '-x' expressions are not available in all
9862 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
9864 *) Fix a couple of memory leaks in PKCS7_dataDecode()
9865 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
9867 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
9868 the default extension for executables, if any. Also, make the perl
9869 scripts that use symlink() to test if it really exists and use "cp"
9870 if it doesn't. All this made OpenSSL compilable and installable in
9874 *) Fix for asn1_GetSequence() for indefinite length constructed data.
9875 If SEQUENCE is length is indefinite just set c->slen to the total
9876 amount of data available.
9877 [Steve Henson, reported by shige@FreeBSD.org]
9878 [This change does not apply to 0.9.7.]
9880 *) Change bctest to avoid here-documents inside command substitution
9881 (workaround for FreeBSD /bin/sh bug).
9882 For compatibility with Ultrix, avoid shell functions (introduced
9883 in the bctest version that searches along $PATH).
9886 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
9887 with des_encrypt() defined on some operating systems, like Solaris
9891 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
9892 On the Importance of Eliminating Errors in Cryptographic
9893 Computations, J. Cryptology 14 (2001) 2, 101-119,
9894 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
9897 *) MIPS assembler BIGNUM division bug fix.
9900 *) Disabled incorrect Alpha assembler code.
9903 *) Fix PKCS#7 decode routines so they correctly update the length
9904 after reading an EOC for the EXPLICIT tag.
9906 [This change does not apply to 0.9.7.]
9908 *) Fix bug in PKCS#12 key generation routines. This was triggered
9909 if a 3DES key was generated with a 0 initial byte. Include
9910 PKCS12_BROKEN_KEYGEN compilation option to retain the old
9911 (but broken) behaviour.
9914 *) Enhance bctest to search for a working bc along $PATH and print
9916 [Tim Rice <tim@multitalents.net> via Richard Levitte]
9918 *) Fix memory leaks in err.c: free err_data string if necessary;
9919 don't write to the wrong index in ERR_set_error_data.
9922 *) Implement ssl23_peek (analogous to ssl23_read), which previously
9926 *) Replace rdtsc with _emit statements for VC++ version 5.
9927 [Jeremy Cooper <jeremy@baymoo.org>]
9929 *) Make it possible to reuse SSLv2 sessions.
9932 *) In copy_email() check for >= 0 as a return value for
9933 X509_NAME_get_index_by_NID() since 0 is a valid index.
9934 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
9936 *) Avoid coredump with unsupported or invalid public keys by checking if
9937 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
9938 PKCS7_verify() fails with non detached data.
9941 *) Don't use getenv in library functions when run as setuid/setgid.
9942 New function OPENSSL_issetugid().
9945 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
9946 due to incorrect handling of multi-threading:
9948 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
9950 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
9952 3. Count how many times MemCheck_off() has been called so that
9953 nested use can be treated correctly. This also avoids
9954 inband-signalling in the previous code (which relied on the
9955 assumption that thread ID 0 is impossible).
9958 *) Add "-rand" option also to s_client and s_server.
9961 *) Fix CPU detection on Irix 6.x.
9962 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
9963 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
9965 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
9968 [This change does not apply to 0.9.7.]
9970 *) Use the cached encoding of an X509_NAME structure rather than
9971 copying it. This is apparently the reason for the libsafe "errors"
9972 but the code is actually correct.
9975 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
9976 Bleichenbacher's DSA attack.
9977 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
9978 to be set and top=0 forces the highest bit to be set; top=-1 is new
9979 and leaves the highest bit random.
9980 [Ulf Moeller, Bodo Moeller]
9982 *) In the NCONF_...-based implementations for CONF_... queries
9983 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
9984 a temporary CONF structure with the data component set to NULL
9985 (which gives segmentation faults in lh_retrieve).
9986 Instead, use NULL for the CONF pointer in CONF_get_string and
9987 CONF_get_number (which may use environment variables) and directly
9988 return NULL from CONF_get_section.
9991 *) Fix potential buffer overrun for EBCDIC.
9994 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
9995 keyUsage if basicConstraints absent for a CA.
9998 *) Make SMIME_write_PKCS7() write mail header values with a format that
9999 is more generally accepted (no spaces before the semicolon), since
10000 some programs can't parse those values properly otherwise. Also make
10001 sure BIO's that break lines after each write do not create invalid
10005 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
10006 macros previously used would not encode an empty SEQUENCE OF
10007 and break the signature.
10009 [This change does not apply to 0.9.7.]
10011 *) Zero the premaster secret after deriving the master secret in
10015 *) Add some EVP_add_digest_alias registrations (as found in
10016 OpenSSL_add_all_digests()) to SSL_library_init()
10017 aka OpenSSL_add_ssl_algorithms(). This provides improved
10018 compatibility with peers using X.509 certificates
10019 with unconventional AlgorithmIdentifier OIDs.
10022 *) Fix for Irix with NO_ASM.
10023 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
10025 *) ./config script fixes.
10026 [Ulf Moeller, Richard Levitte]
10028 *) Fix 'openssl passwd -1'.
10031 *) Change PKCS12_key_gen_asc() so it can cope with non null
10032 terminated strings whose length is passed in the passlen
10033 parameter, for example from PEM callbacks. This was done
10034 by adding an extra length parameter to asc2uni().
10035 [Steve Henson, reported by <oddissey@samsung.co.kr>]
10037 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
10038 call failed, free the DSA structure.
10041 *) Fix to uni2asc() to cope with zero length Unicode strings.
10042 These are present in some PKCS#12 files.
10045 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
10046 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
10047 when writing a 32767 byte record.
10048 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
10050 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
10051 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
10053 (RSA objects have a reference count access to which is protected
10054 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
10055 so they are meant to be shared between threads.)
10056 [Bodo Moeller, Geoff Thorpe; original patch submitted by
10057 "Reddie, Steven" <Steven.Reddie@ca.com>]
10059 *) Fix a deadlock in CRYPTO_mem_leaks().
10062 *) Use better test patterns in bntest.
10065 *) rand_win.c fix for Borland C.
10068 *) BN_rshift bugfix for n == 0.
10071 *) Add a 'bctest' script that checks for some known 'bc' bugs
10072 so that 'make test' does not abort just because 'bc' is broken.
10075 *) Store verify_result within SSL_SESSION also for client side to
10076 avoid potential security hole. (Re-used sessions on the client side
10077 always resulted in verify_result==X509_V_OK, not using the original
10078 result of the server certificate verification.)
10081 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
10082 SSL3_RT_APPLICATION_DATA, return 0.
10083 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
10087 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
10088 releases, have been re-implemented by renaming the previous
10089 implementations of ssl2_read and ssl3_read to ssl2_read_internal
10090 and ssl3_read_internal, respectively, and adding 'peek' parameters
10091 to them. The new ssl[23]_{read,peek} functions are calls to
10092 ssl[23]_read_internal with the 'peek' flag set appropriately.
10093 A 'peek' parameter has also been added to ssl3_read_bytes, which
10094 does the actual work for ssl3_read_internal.
10097 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
10098 the method-specific "init()" handler. Also clean up ex_data after
10099 calling the method-specific "finish()" handler. Previously, this was
10100 happening the other way round.
10103 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
10104 The previous value, 12, was not always sufficient for BN_mod_exp().
10107 *) Make sure that shared libraries get the internal name engine with
10108 the full version number and not just 0. This should mark the
10109 shared libraries as not backward compatible. Of course, this should
10110 be changed again when we can guarantee backward binary compatibility.
10113 *) Fix typo in get_cert_by_subject() in by_dir.c
10114 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
10116 *) Rework the system to generate shared libraries:
10118 - Make note of the expected extension for the shared libraries and
10119 if there is a need for symbolic links from for example libcrypto.so.0
10120 to libcrypto.so.0.9.7. There is extended info in Configure for
10123 - Make as few rebuilds of the shared libraries as possible.
10125 - Still avoid linking the OpenSSL programs with the shared libraries.
10127 - When installing, install the shared libraries separately from the
10131 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
10133 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
10134 and not in SSL_clear because the latter is also used by the
10135 accept/connect functions; previously, the settings made by
10136 SSL_set_read_ahead would be lost during the handshake.
10137 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
10139 *) Correct util/mkdef.pl to be selective about disabled algorithms.
10140 Previously, it would create entries for disabled algorithms no
10144 *) Added several new manual pages for SSL_* function.
10147 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
10149 *) In ssl23_get_client_hello, generate an error message when faced
10150 with an initial SSL 3.0/TLS record that is too small to contain the
10151 first two bytes of the ClientHello message, i.e. client_version.
10152 (Note that this is a pathologic case that probably has never happened
10153 in real life.) The previous approach was to use the version number
10154 from the record header as a substitute; but our protocol choice
10155 should not depend on that one because it is not authenticated
10156 by the Finished messages.
10159 *) More robust randomness gathering functions for Windows.
10160 [Jeffrey Altman <jaltman@columbia.edu>]
10162 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
10163 not set then we don't setup the error code for issuer check errors
10164 to avoid possibly overwriting other errors which the callback does
10165 handle. If an application does set the flag then we assume it knows
10166 what it is doing and can handle the new informational codes
10170 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
10171 a general "ANY" type, as such it should be able to decode anything
10172 including tagged types. However it didn't check the class so it would
10173 wrongly interpret tagged types in the same way as their universal
10174 counterpart and unknown types were just rejected. Changed so that the
10175 tagged and unknown types are handled in the same way as a SEQUENCE:
10176 that is the encoding is stored intact. There is also a new type
10177 "V_ASN1_OTHER" which is used when the class is not universal, in this
10178 case we have no idea what the actual type is so we just lump them all
10182 *) On VMS, stdout may very well lead to a file that is written to
10183 in a record-oriented fashion. That means that every write() will
10184 write a separate record, which will be read separately by the
10185 programs trying to read from it. This can be very confusing.
10187 The solution is to put a BIO filter in the way that will buffer
10188 text until a linefeed is reached, and then write everything a
10189 line at a time, so every record written will be an actual line,
10190 not chunks of lines and not (usually doesn't happen, but I've
10191 seen it once) several lines in one record. BIO_f_linebuffer() is
10194 Currently, it's a VMS-only method, because that's where it has
10195 been tested well enough.
10198 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
10199 it can return incorrect results.
10200 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
10201 but it was in 0.9.6-beta[12].)
10204 *) Disable the check for content being present when verifying detached
10205 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
10206 include zero length content when signing messages.
10209 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
10210 BIO_ctrl (for BIO pairs).
10213 *) Add DSO method for VMS.
10216 *) Bug fix: Montgomery multiplication could produce results with the
10220 *) Add RPM specification openssl.spec and modify it to build three
10221 packages. The default package contains applications, application
10222 documentation and run-time libraries. The devel package contains
10223 include files, static libraries and function documentation. The
10224 doc package contains the contents of the doc directory. The original
10225 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
10228 *) Add a large number of documentation files for many SSL routines.
10229 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
10231 *) Add a configuration entry for Sony News 4.
10232 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
10234 *) Don't set the two most significant bits to one when generating a
10235 random number < q in the DSA library.
10238 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
10239 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
10240 the underlying transport is blocking) if a handshake took place.
10241 (The default behaviour is needed by applications such as s_client
10242 and s_server that use select() to determine when to use SSL_read;
10243 but for applications that know in advance when to expect data, it
10244 just makes things more complicated.)
10247 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
10251 *) Add a few more EBCDIC conditionals that make `req' and `x509'
10252 work better on such systems.
10253 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
10255 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
10256 Update PKCS12_parse() so it copies the friendlyName and the
10257 keyid to the certificates aux info.
10260 *) Fix bug in PKCS7_verify() which caused an infinite loop
10261 if there was more than one signature.
10262 [Sven Uszpelkat <su@celocom.de>]
10264 *) Major change in util/mkdef.pl to include extra information
10265 about each symbol, as well as presenting variables as well
10266 as functions. This change means that there's n more need
10267 to rebuild the .num files when some algorithms are excluded.
10270 *) Allow the verify time to be set by an application,
10271 rather than always using the current time.
10274 *) Phase 2 verify code reorganisation. The certificate
10275 verify code now looks up an issuer certificate by a
10276 number of criteria: subject name, authority key id
10277 and key usage. It also verifies self signed certificates
10278 by the same criteria. The main comparison function is
10279 X509_check_issued() which performs these checks.
10281 Lot of changes were necessary in order to support this
10282 without completely rewriting the lookup code.
10284 Authority and subject key identifier are now cached.
10286 The LHASH 'certs' is X509_STORE has now been replaced
10287 by a STACK_OF(X509_OBJECT). This is mainly because an
10288 LHASH can't store or retrieve multiple objects with
10289 the same hash value.
10291 As a result various functions (which were all internal
10292 use only) have changed to handle the new X509_STORE
10293 structure. This will break anything that messed round
10294 with X509_STORE internally.
10296 The functions X509_STORE_add_cert() now checks for an
10297 exact match, rather than just subject name.
10299 The X509_STORE API doesn't directly support the retrieval
10300 of multiple certificates matching a given criteria, however
10301 this can be worked round by performing a lookup first
10302 (which will fill the cache with candidate certificates)
10303 and then examining the cache for matches. This is probably
10304 the best we can do without throwing out X509_LOOKUP
10305 entirely (maybe later...).
10307 The X509_VERIFY_CTX structure has been enhanced considerably.
10309 All certificate lookup operations now go via a get_issuer()
10310 callback. Although this currently uses an X509_STORE it
10311 can be replaced by custom lookups. This is a simple way
10312 to bypass the X509_STORE hackery necessary to make this
10313 work and makes it possible to use more efficient techniques
10314 in future. A very simple version which uses a simple
10315 STACK for its trusted certificate store is also provided
10316 using X509_STORE_CTX_trusted_stack().
10318 The verify_cb() and verify() callbacks now have equivalents
10319 in the X509_STORE_CTX structure.
10321 X509_STORE_CTX also has a 'flags' field which can be used
10322 to customise the verify behaviour.
10325 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
10326 excludes S/MIME capabilities.
10329 *) When a certificate request is read in keep a copy of the
10330 original encoding of the signed data and use it when outputting
10331 again. Signatures then use the original encoding rather than
10332 a decoded, encoded version which may cause problems if the
10333 request is improperly encoded.
10336 *) For consistency with other BIO_puts implementations, call
10337 buffer_write(b, ...) directly in buffer_puts instead of calling
10340 In BIO_puts, increment b->num_write as in BIO_write.
10341 [Peter.Sylvester@EdelWeb.fr]
10343 *) Fix BN_mul_word for the case where the word is 0. (We have to use
10344 BN_zero, we may not return a BIGNUM with an array consisting of
10345 words set to zero.)
10348 *) Avoid calling abort() from within the library when problems are
10349 detected, except if preprocessor symbols have been defined
10350 (such as REF_CHECK, BN_DEBUG etc.).
10353 *) New openssl application 'rsautl'. This utility can be
10354 used for low level RSA operations. DER public key
10355 BIO/fp routines also added.
10358 *) New Configure entry and patches for compiling on QNX 4.
10359 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
10361 *) A demo state-machine implementation was sponsored by
10362 Nuron (http://www.nuron.com/) and is now available in
10363 demos/state_machine.
10366 *) New options added to the 'dgst' utility for signature
10367 generation and verification.
10370 *) Unrecognized PKCS#7 content types are now handled via a
10371 catch all ASN1_TYPE structure. This allows unsupported
10372 types to be stored as a "blob" and an application can
10373 encode and decode it manually.
10376 *) Fix various signed/unsigned issues to make a_strex.c
10377 compile under VC++.
10378 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
10380 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
10381 length if passed a buffer. ASN1_INTEGER_to_BN failed
10382 if passed a NULL BN and its argument was negative.
10383 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
10385 *) Modification to PKCS#7 encoding routines to output definite
10386 length encoding. Since currently the whole structures are in
10387 memory there's not real point in using indefinite length
10388 constructed encoding. However if OpenSSL is compiled with
10389 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
10392 *) Added BIO_vprintf() and BIO_vsnprintf().
10395 *) Added more prefixes to parse for in the strings written
10396 through a logging bio, to cover all the levels that are available
10397 through syslog. The prefixes are now:
10399 PANIC, EMERG, EMR => LOG_EMERG
10400 ALERT, ALR => LOG_ALERT
10401 CRIT, CRI => LOG_CRIT
10402 ERROR, ERR => LOG_ERR
10403 WARNING, WARN, WAR => LOG_WARNING
10404 NOTICE, NOTE, NOT => LOG_NOTICE
10405 INFO, INF => LOG_INFO
10406 DEBUG, DBG => LOG_DEBUG
10408 and as before, if none of those prefixes are present at the
10409 beginning of the string, LOG_ERR is chosen.
10411 On Win32, the LOG_* levels are mapped according to this:
10413 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
10414 LOG_WARNING => EVENTLOG_WARNING_TYPE
10415 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
10419 *) Made it possible to reconfigure with just the configuration
10420 argument "reconf" or "reconfigure". The command line arguments
10421 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
10422 and are retrieved from there when reconfiguring.
10425 *) MD4 implemented.
10426 [Assar Westerlund <assar@sics.se>, Richard Levitte]
10428 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
10431 *) The obj_dat.pl script was messing up the sorting of object
10432 names. The reason was that it compared the quoted version
10433 of strings as a result "OCSP" > "OCSP Signing" because
10434 " > SPACE. Changed script to store unquoted versions of
10435 names and add quotes on output. It was also omitting some
10436 names from the lookup table if they were given a default
10437 value (that is if SN is missing it is given the same
10438 value as LN and vice versa), these are now added on the
10439 grounds that if an object has a name we should be able to
10440 look it up. Finally added warning output when duplicate
10441 short or long names are found.
10444 *) Changes needed for Tandem NSK.
10445 [Scott Uroff <scott@xypro.com>]
10447 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
10448 RSA_padding_check_SSLv23(), special padding was never detected
10449 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
10450 version rollback attacks was not effective.
10452 In s23_clnt.c, don't use special rollback-attack detection padding
10453 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
10454 client; similarly, in s23_srvr.c, don't do the rollback check if
10455 SSL 2.0 is the only protocol enabled in the server.
10458 *) Make it possible to get hexdumps of unprintable data with 'openssl
10459 asn1parse'. By implication, the functions ASN1_parse_dump() and
10460 BIO_dump_indent() are added.
10463 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
10464 these print out strings and name structures based on various
10465 flags including RFC2253 support and proper handling of
10466 multibyte characters. Added options to the 'x509' utility
10467 to allow the various flags to be set.
10470 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
10471 Also change the functions X509_cmp_current_time() and
10472 X509_gmtime_adj() work with an ASN1_TIME structure,
10473 this will enable certificates using GeneralizedTime in validity
10474 dates to be checked.
10477 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
10478 negative public key encodings) on by default,
10479 NO_NEG_PUBKEY_BUG can be set to disable it.
10482 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
10483 content octets. An i2c_ASN1_OBJECT is unnecessary because
10484 the encoding can be trivially obtained from the structure.
10487 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
10488 not read locks (CRYPTO_r_[un]lock).
10491 *) A first attempt at creating official support for shared
10492 libraries through configuration. I've kept it so the
10493 default is static libraries only, and the OpenSSL programs
10494 are always statically linked for now, but there are
10495 preparations for dynamic linking in place.
10496 This has been tested on Linux and Tru64.
10499 *) Randomness polling function for Win9x, as described in:
10500 Peter Gutmann, Software Generation of Practically Strong
10504 *) Fix so PRNG is seeded in req if using an already existing
10508 *) New options to smime application. -inform and -outform
10509 allow alternative formats for the S/MIME message including
10510 PEM and DER. The -content option allows the content to be
10511 specified separately. This should allow things like Netscape
10512 form signing output easier to verify.
10515 *) Fix the ASN1 encoding of tags using the 'long form'.
10518 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
10519 STRING types. These convert content octets to and from the
10520 underlying type. The actual tag and length octets are
10521 already assumed to have been read in and checked. These
10522 are needed because all other string types have virtually
10523 identical handling apart from the tag. By having versions
10524 of the ASN1 functions that just operate on content octets
10525 IMPLICIT tagging can be handled properly. It also allows
10526 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
10527 and ASN1_INTEGER are identical apart from the tag.
10530 *) Change the handling of OID objects as follows:
10532 - New object identifiers are inserted in objects.txt, following
10533 the syntax given in objects.README.
10534 - objects.pl is used to process obj_mac.num and create a new
10536 - obj_dat.pl is used to create a new obj_dat.h, using the data in
10539 This is currently kind of a hack, and the perl code in objects.pl
10540 isn't very elegant, but it works as I intended. The simplest way
10541 to check that it worked correctly is to look in obj_dat.h and
10542 check the array nid_objs and make sure the objects haven't moved
10543 around (this is important!). Additions are OK, as well as
10544 consistent name changes.
10547 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
10550 *) Addition of the command line parameter '-rand file' to 'openssl req'.
10551 The given file adds to whatever has already been seeded into the
10552 random pool through the RANDFILE configuration file option or
10553 environment variable, or the default random state file.
10556 *) mkstack.pl now sorts each macro group into lexical order.
10557 Previously the output order depended on the order the files
10558 appeared in the directory, resulting in needless rewriting
10562 *) Patches to make OpenSSL compile under Win32 again. Mostly
10563 work arounds for the VC++ problem that it treats func() as
10564 func(void). Also stripped out the parts of mkdef.pl that
10565 added extra typesafe functions: these no longer exist.
10568 *) Reorganisation of the stack code. The macros are now all
10569 collected in safestack.h . Each macro is defined in terms of
10570 a "stack macro" of the form SKM_<name>(type, a, b). The
10571 DEBUG_SAFESTACK is now handled in terms of function casts,
10572 this has the advantage of retaining type safety without the
10573 use of additional functions. If DEBUG_SAFESTACK is not defined
10574 then the non typesafe macros are used instead. Also modified the
10575 mkstack.pl script to handle the new form. Needs testing to see
10576 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
10577 the default if no major problems. Similar behaviour for ASN1_SET_OF
10578 and PKCS12_STACK_OF.
10581 *) When some versions of IIS use the 'NET' form of private key the
10582 key derivation algorithm is different. Normally MD5(password) is
10583 used as a 128 bit RC4 key. In the modified case
10584 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
10585 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
10586 as the old Netscape_RSA functions except they have an additional
10587 'sgckey' parameter which uses the modified algorithm. Also added
10588 an -sgckey command line option to the rsa utility. Thanks to
10589 Adrian Peck <bertie@ncipher.com> for posting details of the modified
10590 algorithm to openssl-dev.
10593 *) The evp_local.h macros were using 'c.##kname' which resulted in
10594 invalid expansion on some systems (SCO 5.0.5 for example).
10595 Corrected to 'c.kname'.
10596 [Phillip Porch <root@theporch.com>]
10598 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
10599 a STACK of email addresses from a certificate or request, these look
10600 in the subject name and the subject alternative name extensions and
10601 omit any duplicate addresses.
10604 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
10605 This makes DSA verification about 2 % faster.
10608 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
10609 (meaning that now 2^5 values will be precomputed, which is only 4 KB
10610 plus overhead for 1024 bit moduli).
10611 This makes exponentiations about 0.5 % faster for 1024 bit
10612 exponents (as measured by "openssl speed rsa2048").
10615 *) Rename memory handling macros to avoid conflicts with other
10617 Malloc => OPENSSL_malloc
10618 Malloc_locked => OPENSSL_malloc_locked
10619 Realloc => OPENSSL_realloc
10620 Free => OPENSSL_free
10623 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
10624 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
10627 *) CygWin32 support.
10628 [John Jarvie <jjarvie@newsguy.com>]
10630 *) The type-safe stack code has been rejigged. It is now only compiled
10631 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
10632 by default all type-specific stack functions are "#define"d back to
10633 standard stack functions. This results in more streamlined output
10634 but retains the type-safety checking possibilities of the original
10638 *) The STACK code has been cleaned up, and certain type declarations
10639 that didn't make a lot of sense have been brought in line. This has
10640 also involved a cleanup of sorts in safestack.h to more correctly
10641 map type-safe stack functions onto their plain stack counterparts.
10642 This work has also resulted in a variety of "const"ifications of
10643 lots of the code, especially "_cmp" operations which should normally
10644 be prototyped with "const" parameters anyway.
10647 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
10648 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
10649 (The PRNG state consists of two parts, the large pool 'state' and 'md',
10650 where all of 'md' is used each time the PRNG is used, but 'state'
10651 is used only indexed by a cyclic counter. As entropy may not be
10652 well distributed from the beginning, 'md' is important as a
10653 chaining variable. However, the output function chains only half
10654 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
10655 all of 'md', and seeding with STATE_SIZE dummy bytes will result
10656 in all of 'state' being rewritten, with the new values depending
10657 on virtually all of 'md'. This overcomes the 80 bit limitation.)
10660 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
10661 the handshake is continued after ssl_verify_cert_chain();
10662 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
10663 can lead to 'unexplainable' connection aborts later.
10664 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
10666 *) Major EVP API cipher revision.
10667 Add hooks for extra EVP features. This allows various cipher
10668 parameters to be set in the EVP interface. Support added for variable
10669 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
10670 setting of RC2 and RC5 parameters.
10672 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
10675 Remove lots of duplicated code from the EVP library. For example *every*
10676 cipher init() function handles the 'iv' in the same way according to the
10677 cipher mode. They also all do nothing if the 'key' parameter is NULL and
10678 for CFB and OFB modes they zero ctx->num.
10680 New functionality allows removal of S/MIME code RC2 hack.
10682 Most of the routines have the same form and so can be declared in terms
10685 By shifting this to the top level EVP_CipherInit() it can be removed from
10686 all individual ciphers. If the cipher wants to handle IVs or keys
10687 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
10690 Change lots of functions like EVP_EncryptUpdate() to now return a
10691 value: although software versions of the algorithms cannot fail
10692 any installed hardware versions can.
10695 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
10696 this option is set, tolerate broken clients that send the negotiated
10697 protocol version number instead of the requested protocol version
10701 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
10702 i.e. non-zero for export ciphersuites, zero otherwise.
10703 Previous versions had this flag inverted, inconsistent with
10704 rsa_tmp_cb (..._TMP_RSA_CB).
10705 [Bodo Moeller; problem reported by Amit Chopra]
10707 *) Add missing DSA library text string. Work around for some IIS
10708 key files with invalid SEQUENCE encoding.
10711 *) Add a document (doc/standards.txt) that list all kinds of standards
10712 and so on that are implemented in OpenSSL.
10715 *) Enhance c_rehash script. Old version would mishandle certificates
10716 with the same subject name hash and wouldn't handle CRLs at all.
10717 Added -fingerprint option to crl utility, to support new c_rehash
10721 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
10724 *) Fix for SSL server purpose checking. Server checking was
10725 rejecting certificates which had extended key usage present
10726 but no ssl client purpose.
10727 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
10729 *) Make PKCS#12 code work with no password. The PKCS#12 spec
10730 is a little unclear about how a blank password is handled.
10731 Since the password in encoded as a BMPString with terminating
10732 double NULL a zero length password would end up as just the
10733 double NULL. However no password at all is different and is
10734 handled differently in the PKCS#12 key generation code. NS
10735 treats a blank password as zero length. MSIE treats it as no
10736 password on export: but it will try both on import. We now do
10737 the same: PKCS12_parse() tries zero length and no password if
10738 the password is set to "" or NULL (NULL is now a valid password:
10739 it wasn't before) as does the pkcs12 application.
10742 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
10743 perror when PEM_read_bio_X509_REQ fails, the error message must
10744 be obtained from the error queue.
10747 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
10748 it in ERR_remove_state if appropriate, and change ERR_get_state
10749 accordingly to avoid race conditions (this is necessary because
10750 thread_hash is no longer constant once set).
10753 *) Bugfix for linux-elf makefile.one.
10756 *) RSA_get_default_method() will now cause a default
10757 RSA_METHOD to be chosen if one doesn't exist already.
10758 Previously this was only set during a call to RSA_new()
10759 or RSA_new_method(NULL) meaning it was possible for
10760 RSA_get_default_method() to return NULL.
10763 *) Added native name translation to the existing DSO code
10764 that will convert (if the flag to do so is set) filenames
10765 that are sufficiently small and have no path information
10766 into a canonical native form. Eg. "blah" converted to
10767 "libblah.so" or "blah.dll" etc.
10770 *) New function ERR_error_string_n(e, buf, len) which is like
10771 ERR_error_string(e, buf), but writes at most 'len' bytes
10772 including the 0 terminator. For ERR_error_string_n, 'buf'
10774 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
10776 *) CONF library reworked to become more general. A new CONF
10777 configuration file reader "class" is implemented as well as a
10778 new functions (NCONF_*, for "New CONF") to handle it. The now
10779 old CONF_* functions are still there, but are reimplemented to
10780 work in terms of the new functions. Also, a set of functions
10781 to handle the internal storage of the configuration data is
10782 provided to make it easier to write new configuration file
10783 reader "classes" (I can definitely see something reading a
10784 configuration file in XML format, for example), called _CONF_*,
10785 or "the configuration storage API"...
10787 The new configuration file reading functions are:
10789 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
10790 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
10792 NCONF_default, NCONF_WIN32
10794 NCONF_dump_fp, NCONF_dump_bio
10796 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
10797 NCONF_new creates a new CONF object. This works in the same way
10798 as other interfaces in OpenSSL, like the BIO interface.
10799 NCONF_dump_* dump the internal storage of the configuration file,
10800 which is useful for debugging. All other functions take the same
10801 arguments as the old CONF_* functions wth the exception of the
10802 first that must be a `CONF *' instead of a `LHASH *'.
10804 To make it easer to use the new classes with the old CONF_* functions,
10805 the function CONF_set_default_method is provided.
10808 *) Add '-tls1' option to 'openssl ciphers', which was already
10809 mentioned in the documentation but had not been implemented.
10810 (This option is not yet really useful because even the additional
10811 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
10814 *) Initial DSO code added into libcrypto for letting OpenSSL (and
10815 OpenSSL-based applications) load shared libraries and bind to
10816 them in a portable way.
10817 [Geoff Thorpe, with contributions from Richard Levitte]
10819 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
10821 *) Make sure _lrotl and _lrotr are only used with MSVC.
10823 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
10824 (the default implementation of RAND_status).
10826 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
10827 to '-clrext' (= clear extensions), as intended and documented.
10828 [Bodo Moeller; inconsistency pointed out by Michael Attili
10829 <attili@amaxo.com>]
10831 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
10832 was larger than the MD block size.
10833 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
10835 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
10836 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
10837 using the passed key: if the passed key was a private key the result
10838 of X509_print(), for example, would be to print out all the private key
10842 *) des_quad_cksum() byte order bug fix.
10843 [Ulf Möller, using the problem description in krb4-0.9.7, where
10844 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
10846 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
10848 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
10850 *) For easily testing in shell scripts whether some command
10851 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
10852 returns with exit code 0 iff no command of the given name is available.
10853 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
10854 the output goes to stdout and nothing is printed to stderr.
10855 Additional arguments are always ignored.
10857 Since for each cipher there is a command of the same name,
10858 the 'no-cipher' compilation switches can be tested this way.
10860 ('openssl no-XXX' is not able to detect pseudo-commands such
10861 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
10864 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
10867 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
10868 is set; it will be thrown away anyway because each handshake creates
10870 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
10871 to parameters -- in previous versions (since OpenSSL 0.9.3) the
10872 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
10873 you effectively got SSL_OP_SINGLE_DH_USE when using this macro.
10876 *) New s_client option -ign_eof: EOF at stdin is ignored, and
10877 'Q' and 'R' lose their special meanings (quit/renegotiate).
10878 This is part of what -quiet does; unlike -quiet, -ign_eof
10879 does not suppress any output.
10882 *) Add compatibility options to the purpose and trust code. The
10883 purpose X509_PURPOSE_ANY is "any purpose" which automatically
10884 accepts a certificate or CA, this was the previous behaviour,
10885 with all the associated security issues.
10887 X509_TRUST_COMPAT is the old trust behaviour: only and
10888 automatically trust self signed roots in certificate store. A
10889 new trust setting X509_TRUST_DEFAULT is used to specify that
10890 a purpose has no associated trust setting and it should instead
10891 use the value in the default purpose.
10894 *) Fix the PKCS#8 DSA private key code so it decodes keys again
10895 and fix a memory leak.
10898 *) In util/mkerr.pl (which implements 'make errors'), preserve
10899 reason strings from the previous version of the .c file, as
10900 the default to have only downcase letters (and digits) in
10901 automatically generated reasons codes is not always appropriate.
10904 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
10905 using strerror. Previously, ERR_reason_error_string() returned
10906 library names as reason strings for SYSerr; but SYSerr is a special
10907 case where small numbers are errno values, not library numbers.
10910 *) Add '-dsaparam' option to 'openssl dhparam' application. This
10911 converts DSA parameters into DH parameters. (When creating parameters,
10912 DSA_generate_parameters is used.)
10915 *) Include 'length' (recommended exponent length) in C code generated
10916 by 'openssl dhparam -C'.
10919 *) The second argument to set_label in perlasm was already being used
10920 so couldn't be used as a "file scope" flag. Moved to third argument
10924 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
10925 instead of RAND_bytes for encryption IVs and salts.
10928 *) Include RAND_status() into RAND_METHOD instead of implementing
10929 it only for md_rand.c Otherwise replacing the PRNG by calling
10930 RAND_set_rand_method would be impossible.
10933 *) Don't let DSA_generate_key() enter an infinite loop if the random
10934 number generation fails.
10937 *) New 'rand' application for creating pseudo-random output.
10940 *) Added configuration support for Linux/IA64
10941 [Rolf Haberrecker <rolf@suse.de>]
10943 *) Assembler module support for Mingw32.
10946 *) Shared library support for HPUX (in shlib/).
10947 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
10949 *) Shared library support for Solaris gcc.
10950 [Lutz Behnke <behnke@trustcenter.de>]
10952 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
10954 *) PKCS7_encrypt() was adding text MIME headers twice because they
10955 were added manually and by SMIME_crlf_copy().
10958 *) In bntest.c don't call BN_rand with zero bits argument.
10959 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
10961 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
10962 case was implemented. This caused BN_div_recp() to fail occasionally.
10965 *) Add an optional second argument to the set_label() in the perl
10966 assembly language builder. If this argument exists and is set
10967 to 1 it signals that the assembler should use a symbol whose
10968 scope is the entire file, not just the current function. This
10969 is needed with MASM which uses the format label:: for this scope.
10970 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
10972 *) Change the ASN1 types so they are typedefs by default. Before
10973 almost all types were #define'd to ASN1_STRING which was causing
10974 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
10978 *) Change names of new functions to the new get1/get0 naming
10979 convention: After 'get1', the caller owns a reference count
10980 and has to call ..._free; 'get0' returns a pointer to some
10981 data structure without incrementing reference counters.
10982 (Some of the existing 'get' functions increment a reference
10983 counter, some don't.)
10984 Similarly, 'set1' and 'add1' functions increase reference
10985 counters or duplicate objects.
10988 *) Allow for the possibility of temp RSA key generation failure:
10989 the code used to assume it always worked and crashed on failure.
10992 *) Fix potential buffer overrun problem in BIO_printf().
10993 [Ulf Möller, using public domain code by Patrick Powell; problem
10994 pointed out by David Sacerdote <das33@cornell.edu>]
10996 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
10997 RAND_egd() and RAND_status(). In the command line application,
10998 the EGD socket can be specified like a seed file using RANDFILE
11002 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
11003 Some CAs (e.g. Verisign) distribute certificates in this form.
11006 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
11007 list to exclude them. This means that no special compilation option
11008 is needed to use anonymous DH: it just needs to be included in the
11012 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
11013 EVP_MD_type. The old functionality is available in a new macro called
11014 EVP_MD_md(). Change code that uses it and update docs.
11017 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
11018 where the 'void *' argument is replaced by a function pointer argument.
11019 Previously 'void *' was abused to point to functions, which works on
11020 many platforms, but is not correct. As these functions are usually
11021 called by macros defined in OpenSSL header files, most source code
11022 should work without changes.
11025 *) <openssl/opensslconf.h> (which is created by Configure) now contains
11026 sections with information on -D... compiler switches used for
11027 compiling the library so that applications can see them. To enable
11028 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
11029 must be defined. E.g.,
11030 #define OPENSSL_ALGORITHM_DEFINES
11031 #include <openssl/opensslconf.h>
11032 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
11033 [Richard Levitte, Ulf and Bodo Möller]
11035 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
11039 *) Change the 'other' type in certificate aux info to a STACK_OF
11040 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
11041 the required ASN1 format: arbitrary types determined by an OID.
11044 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
11045 argument to 'req'. This is not because the function is newer or
11046 better than others it just uses the work 'NEW' in the certificate
11047 request header lines. Some software needs this.
11050 *) Reorganise password command line arguments: now passwords can be
11051 obtained from various sources. Delete the PEM_cb function and make
11052 it the default behaviour: i.e. if the callback is NULL and the
11053 usrdata argument is not NULL interpret it as a null terminated pass
11054 phrase. If usrdata and the callback are NULL then the pass phrase
11055 is prompted for as usual.
11058 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
11059 the support is automatically enabled. The resulting binaries will
11060 autodetect the card and use it if present.
11061 [Ben Laurie and Compaq Inc.]
11063 *) Work around for Netscape hang bug. This sends certificate request
11064 and server done in one record. Since this is perfectly legal in the
11065 SSL/TLS protocol it isn't a "bug" option and is on by default. See
11066 the bugs/SSLv3 entry for more info.
11069 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
11072 *) Add -rand argument to smime and pkcs12 applications and read/write
11076 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
11079 *) Add command line password options to the remaining applications.
11082 *) Bug fix for BN_div_recp() for numerators with an even number of
11086 *) More tests in bntest.c, and changed test_bn output.
11089 *) ./config recognizes MacOS X now.
11092 *) Bug fix for BN_div() when the first words of num and divisor are
11093 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
11096 *) Add support for various broken PKCS#8 formats, and command line
11097 options to produce them.
11100 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
11101 get temporary BIGNUMs from a BN_CTX.
11104 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
11108 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
11109 include a #define from the old name to the new. The original intent
11110 was that statically linked binaries could for example just call
11111 SSLeay_add_all_ciphers() to just add ciphers to the table and not
11112 link with digests. This never worked because SSLeay_add_all_digests()
11113 and SSLeay_add_all_ciphers() were in the same source file so calling
11114 one would link with the other. They are now in separate source files.
11117 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
11120 *) Use a less unusual form of the Miller-Rabin primality test (it used
11121 a binary algorithm for exponentiation integrated into the Miller-Rabin
11122 loop, our standard modexp algorithms are faster).
11125 *) Support for the EBCDIC character set completed.
11126 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
11128 *) Source code cleanups: use const where appropriate, eliminate casts,
11129 use void * instead of char * in lhash.
11132 *) Bugfix: ssl3_send_server_key_exchange was not restartable
11133 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
11134 this the server could overwrite ephemeral keys that the client
11138 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
11139 using 50 iterations of the Rabin-Miller test.
11141 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
11142 iterations of the Rabin-Miller test as required by the appendix
11143 to FIPS PUB 186[-1]) instead of DSA_is_prime.
11144 As BN_is_prime_fasttest includes trial division, DSA parameter
11145 generation becomes much faster.
11147 This implies a change for the callback functions in DSA_is_prime
11148 and DSA_generate_parameters: The callback function is called once
11149 for each positive witness in the Rabin-Miller test, not just
11150 occasionally in the inner loop; and the parameters to the
11151 callback function now provide an iteration count for the outer
11152 loop rather than for the current invocation of the inner loop.
11153 DSA_generate_parameters additionally can call the callback
11154 function with an 'iteration count' of -1, meaning that a
11155 candidate has passed the trial division test (when q is generated
11156 from an application-provided seed, trial division is skipped).
11159 *) New function BN_is_prime_fasttest that optionally does trial
11160 division before starting the Rabin-Miller test and has
11161 an additional BN_CTX * argument (whereas BN_is_prime always
11162 has to allocate at least one BN_CTX).
11163 'callback(1, -1, cb_arg)' is called when a number has passed the
11164 trial division stage.
11167 *) Fix for bug in CRL encoding. The validity dates weren't being handled
11171 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
11174 *) New function BN_pseudo_rand().
11177 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
11178 bignum version of BN_from_montgomery() with the working code from
11179 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
11183 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
11184 made it impossible to use the same SSL_SESSION data structure in
11185 SSL2 clients in multiple threads.
11188 *) The return value of RAND_load_file() no longer counts bytes obtained
11189 by stat(). RAND_load_file(..., -1) is new and uses the complete file
11190 to seed the PRNG (previously an explicit byte count was required).
11191 [Ulf Möller, Bodo Möller]
11193 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
11194 used (char *) instead of (void *) and had casts all over the place.
11197 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
11200 *) Retain source code compatibility for BN_prime_checks macro:
11201 BN_is_prime(..., BN_prime_checks, ...) now uses
11202 BN_prime_checks_for_size to determine the appropriate number of
11203 Rabin-Miller iterations.
11206 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
11207 DH_CHECK_P_NOT_SAFE_PRIME.
11208 (Check if this is true? OpenPGP calls them "strong".)
11211 *) Merge the functionality of "dh" and "gendh" programs into a new program
11212 "dhparam". The old programs are retained for now but will handle DH keys
11213 (instead of parameters) in future.
11216 *) Make the ciphers, s_server and s_client programs check the return values
11217 when a new cipher list is set.
11220 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
11221 ciphers. Before when the 56bit ciphers were enabled the sorting was
11224 The syntax for the cipher sorting has been extended to support sorting by
11225 cipher-strength (using the strength_bits hard coded in the tables).
11226 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
11228 Fix a bug in the cipher-command parser: when supplying a cipher command
11229 string with an "undefined" symbol (neither command nor alphanumeric
11230 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
11231 an error is flagged.
11233 Due to the strength-sorting extension, the code of the
11234 ssl_create_cipher_list() function was completely rearranged. I hope that
11235 the readability was also increased :-)
11236 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
11238 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
11239 for the first serial number and places 2 in the serial number file. This
11240 avoids problems when the root CA is created with serial number zero and
11241 the first user certificate has the same issuer name and serial number
11245 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
11246 the new code. Add documentation for this stuff.
11249 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
11250 X509_*() to X509at_*() on the grounds that they don't handle X509
11251 structures and behave in an analogous way to the X509v3 functions:
11252 they shouldn't be called directly but wrapper functions should be used
11255 So we also now have some wrapper functions that call the X509at functions
11256 when passed certificate requests. (TO DO: similar things can be done with
11257 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
11258 things. Some of these need some d2i or i2d and print functionality
11259 because they handle more complex structures.)
11262 *) Add missing #ifndefs that caused missing symbols when building libssl
11263 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
11264 NO_RSA in ssl/s2*.c.
11265 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
11267 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
11268 has a return value which indicates the quality of the random data
11269 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
11270 error queue. New function RAND_pseudo_bytes() generates output that is
11271 guaranteed to be unique but not unpredictable. RAND_add is like
11272 RAND_seed, but takes an extra argument for an entropy estimate
11273 (RAND_seed always assumes full entropy).
11276 *) Do more iterations of Rabin-Miller probable prime test (specifically,
11277 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
11278 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
11279 in crypto/bn/bn_prime.c for the complete table). This guarantees a
11280 false-positive rate of at most 2^-80 for random input.
11283 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
11286 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
11287 in the 0.9.5 release), this returns the chain
11288 from an X509_CTX structure with a dup of the stack and all
11289 the X509 reference counts upped: so the stack will exist
11290 after X509_CTX_cleanup() has been called. Modify pkcs12.c
11293 Also make SSL_SESSION_print() print out the verify return
11297 *) Add manpage for the pkcs12 command. Also change the default
11298 behaviour so MAC iteration counts are used unless the new
11299 -nomaciter option is used. This improves file security and
11300 only older versions of MSIE (4.0 for example) need it.
11303 *) Honor the no-xxx Configure options when creating .DEF files.
11306 *) Add PKCS#10 attributes to field table: challengePassword,
11307 unstructuredName and unstructuredAddress. These are taken from
11308 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
11309 international characters are used.
11311 More changes to X509_ATTRIBUTE code: allow the setting of types
11312 based on strings. Remove the 'loc' parameter when adding
11313 attributes because these will be a SET OF encoding which is sorted
11317 *) Initial changes to the 'req' utility to allow request generation
11318 automation. This will allow an application to just generate a template
11319 file containing all the field values and have req construct the
11322 Initial support for X509_ATTRIBUTE handling. Stacks of these are
11323 used all over the place including certificate requests and PKCS#7
11324 structures. They are currently handled manually where necessary with
11325 some primitive wrappers for PKCS#7. The new functions behave in a
11326 manner analogous to the X509 extension functions: they allow
11327 attributes to be looked up by NID and added.
11329 Later something similar to the X509V3 code would be desirable to
11330 automatically handle the encoding, decoding and printing of the
11331 more complex types. The string types like challengePassword can
11332 be handled by the string table functions.
11334 Also modified the multi byte string table handling. Now there is
11335 a 'global mask' which masks out certain types. The table itself
11336 can use the flag STABLE_NO_MASK to ignore the mask setting: this
11337 is useful when for example there is only one permissible type
11338 (as in countryName) and using the mask might result in no valid
11342 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
11343 SSL_get_peer_finished to allow applications to obtain the latest
11344 Finished messages sent to the peer or expected from the peer,
11345 respectively. (SSL_get_peer_finished is usually the Finished message
11346 actually received from the peer, otherwise the protocol will be aborted.)
11348 As the Finished message are message digests of the complete handshake
11349 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
11350 be used for external authentication procedures when the authentication
11351 provided by SSL/TLS is not desired or is not enough.
11354 *) Enhanced support for Alpha Linux is added. Now ./config checks if
11355 the host supports BWX extension and if Compaq C is present on the
11356 $PATH. Just exploiting of the BWX extension results in 20-30%
11357 performance kick for some algorithms, e.g. DES and RC4 to mention
11358 a couple. Compaq C in turn generates ~20% faster code for MD5 and
11362 *) Add support for MS "fast SGC". This is arguably a violation of the
11363 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
11364 weak crypto and after checking the certificate is SGC a second one
11365 with strong crypto. MS SGC stops the first handshake after receiving
11366 the server certificate message and sends a second client hello. Since
11367 a server will typically do all the time consuming operations before
11368 expecting any further messages from the client (server key exchange
11369 is the most expensive) there is little difference between the two.
11371 To get OpenSSL to support MS SGC we have to permit a second client
11372 hello message after we have sent server done. In addition we have to
11373 reset the MAC if we do get this second client hello.
11376 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
11377 if a DER encoded private key is RSA or DSA traditional format. Changed
11378 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
11379 format DER encoded private key. Newer code should use PKCS#8 format which
11380 has the key type encoded in the ASN1 structure. Added DER private key
11381 support to pkcs8 application.
11384 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
11385 ciphersuites has been selected (as required by the SSL 3/TLS 1
11386 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
11387 is set, we interpret this as a request to violate the specification
11388 (the worst that can happen is a handshake failure, and 'correct'
11389 behaviour would result in a handshake failure anyway).
11392 *) In SSL_CTX_add_session, take into account that there might be multiple
11393 SSL_SESSION structures with the same session ID (e.g. when two threads
11394 concurrently obtain them from an external cache).
11395 The internal cache can handle only one SSL_SESSION with a given ID,
11396 so if there's a conflict, we now throw out the old one to achieve
11400 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
11401 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
11402 some routines that use cipher OIDs: some ciphers do not have OIDs
11403 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
11407 *) Simplify the trust setting structure and code. Now we just have
11408 two sequences of OIDs for trusted and rejected settings. These will
11409 typically have values the same as the extended key usage extension
11410 and any application specific purposes.
11412 The trust checking code now has a default behaviour: it will just
11413 check for an object with the same NID as the passed id. Functions can
11414 be provided to override either the default behaviour or the behaviour
11415 for a given id. SSL client, server and email already have functions
11416 in place for compatibility: they check the NID and also return "trusted"
11417 if the certificate is self signed.
11420 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
11421 traditional format into an EVP_PKEY structure.
11424 *) Add a password callback function PEM_cb() which either prompts for
11425 a password if usr_data is NULL or otherwise assumes it is a null
11426 terminated password. Allow passwords to be passed on command line
11427 environment or config files in a few more utilities.
11430 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
11431 keys. Add some short names for PKCS#8 PBE algorithms and allow them
11432 to be specified on the command line for the pkcs8 and pkcs12 utilities.
11433 Update documentation.
11436 *) Support for ASN1 "NULL" type. This could be handled before by using
11437 ASN1_TYPE but there wasn't any function that would try to read a NULL
11438 and produce an error if it couldn't. For compatibility we also have
11439 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
11440 don't allocate anything because they don't need to.
11443 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
11445 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
11447 *) Rebuild of the memory allocation routines used by OpenSSL code and
11448 possibly others as well. The purpose is to make an interface that
11449 provide hooks so anyone can build a separate set of allocation and
11450 deallocation routines to be used by OpenSSL, for example memory
11451 pool implementations, or something else, which was previously hard
11452 since Malloc(), Realloc() and Free() were defined as macros having
11453 the values malloc, realloc and free, respectively (except for Win32
11454 compilations). The same is provided for memory debugging code.
11455 OpenSSL already comes with functionality to find memory leaks, but
11456 this gives people a chance to debug other memory problems.
11458 With these changes, a new set of functions and macros have appeared:
11460 CRYPTO_set_mem_debug_functions() [F]
11461 CRYPTO_get_mem_debug_functions() [F]
11462 CRYPTO_dbg_set_options() [F]
11463 CRYPTO_dbg_get_options() [F]
11464 CRYPTO_malloc_debug_init() [M]
11466 The memory debug functions are NULL by default, unless the library
11467 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
11468 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
11469 gives the standard debugging functions that come with OpenSSL) or
11470 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
11471 provided by the library user) must be used. When the standard
11472 debugging functions are used, CRYPTO_dbg_set_options can be used to
11473 request additional information:
11474 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
11475 the CRYPTO_MDEBUG_xxx macro when compiling the library.
11477 Also, things like CRYPTO_set_mem_functions will always give the
11478 expected result (the new set of functions is used for allocation
11479 and deallocation) at all times, regardless of platform and compiler
11482 To finish it up, some functions that were never use in any other
11483 way than through macros have a new API and new semantic:
11485 CRYPTO_dbg_malloc()
11486 CRYPTO_dbg_realloc()
11489 All macros of value have retained their old syntax.
11490 [Richard Levitte and Bodo Moeller]
11492 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
11493 ordering of SMIMECapabilities wasn't in "strength order" and there
11494 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
11498 *) Some ASN1 types with illegal zero length encoding (INTEGER,
11499 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
11500 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
11502 *) Merge in my S/MIME library for OpenSSL. This provides a simple
11503 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
11504 functionality to handle multipart/signed properly) and a utility
11505 called 'smime' to call all this stuff. This is based on code I
11506 originally wrote for Celo who have kindly allowed it to be
11507 included in OpenSSL.
11510 *) Add variants des_set_key_checked and des_set_key_unchecked of
11511 des_set_key (aka des_key_sched). Global variable des_check_key
11512 decides which of these is called by des_set_key; this way
11513 des_check_key behaves as it always did, but applications and
11514 the library itself, which was buggy for des_check_key == 1,
11515 have a cleaner way to pick the version they need.
11518 *) New function PKCS12_newpass() which changes the password of a
11522 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
11523 dynamic mix. In both cases the ids can be used as an index into the
11524 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
11525 functions so they accept a list of the field values and the
11526 application doesn't need to directly manipulate the X509_TRUST
11530 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
11534 *) Modify the way the V3 extension code looks up extensions. This now
11535 works in a similar way to the object code: we have some "standard"
11536 extensions in a static table which is searched with OBJ_bsearch()
11537 and the application can add dynamic ones if needed. The file
11538 crypto/x509v3/ext_dat.h now has the info: this file needs to be
11539 updated whenever a new extension is added to the core code and kept
11540 in ext_nid order. There is a simple program 'tabtest.c' which checks
11541 this. New extensions are not added too often so this file can readily
11542 be maintained manually.
11544 There are two big advantages in doing things this way. The extensions
11545 can be looked up immediately and no longer need to be "added" using
11546 X509V3_add_standard_extensions(): this function now does nothing.
11547 [Side note: I get *lots* of email saying the extension code doesn't
11548 work because people forget to call this function]
11549 Also no dynamic allocation is done unless new extensions are added:
11550 so if we don't add custom extensions there is no need to call
11551 X509V3_EXT_cleanup().
11554 *) Modify enc utility's salting as follows: make salting the default. Add a
11555 magic header, so unsalted files fail gracefully instead of just decrypting
11556 to garbage. This is because not salting is a big security hole, so people
11557 should be discouraged from doing it.
11560 *) Fixes and enhancements to the 'x509' utility. It allowed a message
11561 digest to be passed on the command line but it only used this
11562 parameter when signing a certificate. Modified so all relevant
11563 operations are affected by the digest parameter including the
11564 -fingerprint and -x509toreq options. Also -x509toreq choked if a
11565 DSA key was used because it didn't fix the digest.
11568 *) Initial certificate chain verify code. Currently tests the untrusted
11569 certificates for consistency with the verify purpose (which is set
11570 when the X509_STORE_CTX structure is set up) and checks the pathlength.
11572 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
11573 this is because it will reject chains with invalid extensions whereas
11574 every previous version of OpenSSL and SSLeay made no checks at all.
11576 Trust code: checks the root CA for the relevant trust settings. Trust
11577 settings have an initial value consistent with the verify purpose: e.g.
11578 if the verify purpose is for SSL client use it expects the CA to be
11579 trusted for SSL client use. However the default value can be changed to
11580 permit custom trust settings: one example of this would be to only trust
11581 certificates from a specific "secure" set of CAs.
11583 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
11584 which should be used for version portability: especially since the
11585 verify structure is likely to change more often now.
11587 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
11588 to set them. If not set then assume SSL clients will verify SSL servers
11591 Two new options to the verify program: -untrusted allows a set of
11592 untrusted certificates to be passed in and -purpose which sets the
11593 intended purpose of the certificate. If a purpose is set then the
11594 new chain verify code is used to check extension consistency.
11597 *) Support for the authority information access extension.
11600 *) Modify RSA and DSA PEM read routines to transparently handle
11601 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
11602 public keys in a format compatible with certificate
11603 SubjectPublicKeyInfo structures. Unfortunately there were already
11604 functions called *_PublicKey_* which used various odd formats so
11605 these are retained for compatibility: however the DSA variants were
11606 never in a public release so they have been deleted. Changed dsa/rsa
11607 utilities to handle the new format: note no releases ever handled public
11608 keys so we should be OK.
11610 The primary motivation for this change is to avoid the same fiasco
11611 that dogs private keys: there are several incompatible private key
11612 formats some of which are standard and some OpenSSL specific and
11613 require various evil hacks to allow partial transparent handling and
11614 even then it doesn't work with DER formats. Given the option anything
11615 other than PKCS#8 should be dumped: but the other formats have to
11616 stay in the name of compatibility.
11618 With public keys and the benefit of hindsight one standard format
11619 is used which works with EVP_PKEY, RSA or DSA structures: though
11620 it clearly returns an error if you try to read the wrong kind of key.
11622 Added a -pubkey option to the 'x509' utility to output the public key.
11623 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
11624 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
11625 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
11626 that do the same as the EVP_PKEY_assign_*() except they up the
11627 reference count of the added key (they don't "swallow" the
11631 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
11632 CRLs would fail if the file contained no certificates or no CRLs:
11633 added a new function to read in both types and return the number
11634 read: this means that if none are read it will be an error. The
11635 DER versions of the certificate and CRL reader would always fail
11636 because it isn't possible to mix certificates and CRLs in DER format
11637 without choking one or the other routine. Changed this to just read
11638 a certificate: this is the best we can do. Also modified the code
11639 in apps/verify.c to take notice of return codes: it was previously
11640 attempting to read in certificates from NULL pointers and ignoring
11641 any errors: this is one reason why the cert and CRL reader seemed
11642 to work. It doesn't check return codes from the default certificate
11643 routines: these may well fail if the certificates aren't installed.
11646 *) Code to support otherName option in GeneralName.
11649 *) First update to verify code. Change the verify utility
11650 so it warns if it is passed a self signed certificate:
11651 for consistency with the normal behaviour. X509_verify
11652 has been modified to it will now verify a self signed
11653 certificate if *exactly* the same certificate appears
11654 in the store: it was previously impossible to trust a
11655 single self signed certificate. This means that:
11656 openssl verify ss.pem
11657 now gives a warning about a self signed certificate but
11658 openssl verify -CAfile ss.pem ss.pem
11662 *) For servers, store verify_result in SSL_SESSION data structure
11663 (and add it to external session representation).
11664 This is needed when client certificate verifications fails,
11665 but an application-provided verification callback (set by
11666 SSL_CTX_set_cert_verify_callback) allows accepting the session
11667 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
11668 but returns 1): When the session is reused, we have to set
11669 ssl->verify_result to the appropriate error code to avoid
11671 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
11673 *) Fix a bug in the new PKCS#7 code: it didn't consider the
11674 case in PKCS7_dataInit() where the signed PKCS7 structure
11675 didn't contain any existing data because it was being created.
11676 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
11678 *) Add a salt to the key derivation routines in enc.c. This
11679 forms the first 8 bytes of the encrypted file. Also add a
11680 -S option to allow a salt to be input on the command line.
11683 *) New function X509_cmp(). Oddly enough there wasn't a function
11684 to compare two certificates. We do this by working out the SHA1
11685 hash and comparing that. X509_cmp() will be needed by the trust
11689 *) SSL_get1_session() is like SSL_get_session(), but increments
11690 the reference count in the SSL_SESSION returned.
11691 [Geoff Thorpe <geoff@eu.c2.net>]
11693 *) Fix for 'req': it was adding a null to request attributes.
11694 Also change the X509_LOOKUP and X509_INFO code to handle
11695 certificate auxiliary information.
11698 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
11702 *) Add the possibility to add extra information to the memory leak
11703 detecting output, to form tracebacks, showing from where each
11704 allocation was originated: CRYPTO_push_info("constant string") adds
11705 the string plus current file name and line number to a per-thread
11706 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
11707 is like calling CYRPTO_pop_info() until the stack is empty.
11708 Also updated memory leak detection code to be multi-thread-safe.
11711 *) Add options -text and -noout to pkcs7 utility and delete the
11712 encryption options which never did anything. Update docs.
11715 *) Add options to some of the utilities to allow the pass phrase
11716 to be included on either the command line (not recommended on
11717 OSes like Unix) or read from the environment. Update the
11718 manpages and fix a few bugs.
11721 *) Add a few manpages for some of the openssl commands.
11724 *) Fix the -revoke option in ca. It was freeing up memory twice,
11725 leaking and not finding already revoked certificates.
11728 *) Extensive changes to support certificate auxiliary information.
11729 This involves the use of X509_CERT_AUX structure and X509_AUX
11730 functions. An X509_AUX function such as PEM_read_X509_AUX()
11731 can still read in a certificate file in the usual way but it
11732 will also read in any additional "auxiliary information". By
11733 doing things this way a fair degree of compatibility can be
11734 retained: existing certificates can have this information added
11735 using the new 'x509' options.
11737 Current auxiliary information includes an "alias" and some trust
11738 settings. The trust settings will ultimately be used in enhanced
11739 certificate chain verification routines: currently a certificate
11740 can only be trusted if it is self signed and then it is trusted
11744 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
11745 The problem was that one of the replacement routines had not been working
11746 since SSLeay releases. For now the offending routine has been replaced
11747 with non-optimised assembler. Even so, this now gives around 95%
11748 performance improvement for 1024 bit RSA signs.
11751 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
11752 handling. Most clients have the effective key size in bits equal to
11753 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
11754 A few however don't do this and instead use the size of the decrypted key
11755 to determine the RC2 key length and the AlgorithmIdentifier to determine
11756 the effective key length. In this case the effective key length can still
11757 be 40 bits but the key length can be 168 bits for example. This is fixed
11758 by manually forcing an RC2 key into the EVP_PKEY structure because the
11759 EVP code can't currently handle unusual RC2 key sizes: it always assumes
11760 the key length and effective key length are equal.
11763 *) Add a bunch of functions that should simplify the creation of
11764 X509_NAME structures. Now you should be able to do:
11765 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
11766 and have it automatically work out the correct field type and fill in
11767 the structures. The more adventurous can try:
11768 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
11769 and it will (hopefully) work out the correct multibyte encoding.
11772 *) Change the 'req' utility to use the new field handling and multibyte
11773 copy routines. Before the DN field creation was handled in an ad hoc
11774 way in req, ca, and x509 which was rather broken and didn't support
11775 BMPStrings or UTF8Strings. Since some software doesn't implement
11776 BMPStrings or UTF8Strings yet, they can be enabled using the config file
11777 using the dirstring_type option. See the new comment in the default
11778 openssl.cnf for more info.
11781 *) Make crypto/rand/md_rand.c more robust:
11782 - Assure unique random numbers after fork().
11783 - Make sure that concurrent threads access the global counter and
11784 md serializably so that we never lose entropy in them
11785 or use exactly the same state in multiple threads.
11786 Access to the large state is not always serializable because
11787 the additional locking could be a performance killer, and
11788 md should be large enough anyway.
11791 *) New file apps/app_rand.c with commonly needed functionality
11792 for handling the random seed file.
11794 Use the random seed file in some applications that previously did not:
11796 dsaparam -genkey (which also ignored its '-rand' option),
11799 x509 (when signing).
11800 Except on systems with /dev/urandom, it is crucial to have a random
11801 seed file at least for key creation, DSA signing, and for DH exchanges;
11802 for RSA signatures we could do without one.
11804 gendh and gendsa (unlike genrsa) used to read only the first byte
11805 of each file listed in the '-rand' option. The function as previously
11806 found in genrsa is now in app_rand.c and is used by all programs
11807 that support '-rand'.
11810 *) In RAND_write_file, use mode 0600 for creating files;
11811 don't just chmod when it may be too late.
11814 *) Report an error from X509_STORE_load_locations
11815 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
11818 *) New function ASN1_mbstring_copy() this copies a string in either
11819 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
11820 into an ASN1_STRING type. A mask of permissible types is passed
11821 and it chooses the "minimal" type to use or an error if not type
11825 *) Add function equivalents to the various macros in asn1.h. The old
11826 macros are retained with an M_ prefix. Code inside the library can
11827 use the M_ macros. External code (including the openssl utility)
11828 should *NOT* in order to be "shared library friendly".
11831 *) Add various functions that can check a certificate's extensions
11832 to see if it usable for various purposes such as SSL client,
11833 server or S/MIME and CAs of these types. This is currently
11834 VERY EXPERIMENTAL but will ultimately be used for certificate chain
11835 verification. Also added a -purpose flag to x509 utility to
11836 print out all the purposes.
11839 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
11843 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
11844 for, obtain and decode and extension and obtain its critical flag.
11845 This allows all the necessary extension code to be handled in a
11846 single function call.
11849 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
11850 platforms. See crypto/rc4/rc4_enc.c for further details.
11853 *) New -noout option to asn1parse. This causes no output to be produced
11854 its main use is when combined with -strparse and -out to extract data
11855 from a file (which may not be in ASN.1 format).
11858 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
11859 when producing the local key id.
11860 [Richard Levitte <levitte@stacken.kth.se>]
11862 *) New option -dhparam in s_server. This allows a DH parameter file to be
11863 stated explicitly. If it is not stated then it tries the first server
11864 certificate file. The previous behaviour hard coded the filename
11868 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
11869 a public key to be input or output. For example:
11870 openssl rsa -in key.pem -pubout -out pubkey.pem
11871 Also added necessary DSA public key functions to handle this.
11874 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
11875 in the message. This was handled by allowing
11876 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
11877 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
11879 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
11880 to the end of the strings whereas this didn't. This would cause problems
11881 if strings read with d2i_ASN1_bytes() were later modified.
11882 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
11884 *) Fix for base64 decode bug. When a base64 bio reads only one line of
11885 data and it contains EOF it will end up returning an error. This is
11886 caused by input 46 bytes long. The cause is due to the way base64
11887 BIOs find the start of base64 encoded data. They do this by trying a
11888 trial decode on each line until they find one that works. When they
11889 do a flag is set and it starts again knowing it can pass all the
11890 data directly through the decoder. Unfortunately it doesn't reset
11891 the context it uses. This means that if EOF is reached an attempt
11892 is made to pass two EOFs through the context and this causes the
11893 resulting error. This can also cause other problems as well. As is
11894 usual with these problems it takes *ages* to find and the fix is
11895 trivial: move one line.
11896 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
11898 *) Ugly workaround to get s_client and s_server working under Windows. The
11899 old code wouldn't work because it needed to select() on sockets and the
11900 tty (for keypresses and to see if data could be written). Win32 only
11901 supports select() on sockets so we select() with a 1s timeout on the
11902 sockets and then see if any characters are waiting to be read, if none
11903 are present then we retry, we also assume we can always write data to
11904 the tty. This isn't nice because the code then blocks until we've
11905 received a complete line of data and it is effectively polling the
11906 keyboard at 1s intervals: however it's quite a bit better than not
11907 working at all :-) A dedicated Windows application might handle this
11908 with an event loop for example.
11911 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
11912 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
11913 will be called when RSA_sign() and RSA_verify() are used. This is useful
11914 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
11915 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
11916 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
11917 This necessitated the support of an extra signature type NID_md5_sha1
11918 for SSL signatures and modifications to the SSL library to use it instead
11919 of calling RSA_public_decrypt() and RSA_private_encrypt().
11922 *) Add new -verify -CAfile and -CApath options to the crl program, these
11923 will lookup a CRL issuers certificate and verify the signature in a
11924 similar way to the verify program. Tidy up the crl program so it
11925 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
11926 less strict. It will now permit CRL extensions even if it is not
11927 a V2 CRL: this will allow it to tolerate some broken CRLs.
11930 *) Initialize all non-automatic variables each time one of the openssl
11931 sub-programs is started (this is necessary as they may be started
11932 multiple times from the "OpenSSL>" prompt).
11933 [Lennart Bang, Bodo Moeller]
11935 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
11936 removing all other RSA functionality (this is what NO_RSA does). This
11937 is so (for example) those in the US can disable those operations covered
11938 by the RSA patent while allowing storage and parsing of RSA keys and RSA
11942 *) Non-copying interface to BIO pairs.
11943 (still largely untested)
11946 *) New function ASN1_tag2str() to convert an ASN1 tag to a descriptive
11947 ASCII string. This was handled independently in various places before.
11950 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
11951 UTF8 strings a character at a time.
11954 *) Use client_version from client hello to select the protocol
11955 (s23_srvr.c) and for RSA client key exchange verification
11956 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
11959 *) Add various utility functions to handle SPKACs, these were previously
11960 handled by poking round in the structure internals. Added new function
11961 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
11962 print, verify and generate SPKACs. Based on an original idea from
11963 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
11966 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
11969 *) Allow the config file extension section to be overwritten on the
11970 command line. Based on an original idea from Massimiliano Pala
11971 <madwolf@comune.modena.it>. The new option is called -extensions
11972 and can be applied to ca, req and x509. Also -reqexts to override
11973 the request extensions in req and -crlexts to override the crl extensions
11977 *) Add new feature to the SPKAC handling in ca. Now you can include
11978 the same field multiple times by preceding it by "XXXX." for example:
11981 this is the same syntax as used in the req config file.
11984 *) Allow certificate extensions to be added to certificate requests. These
11985 are specified in a 'req_extensions' option of the req section of the
11986 config file. They can be printed out with the -text option to req but
11987 are otherwise ignored at present.
11990 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
11991 data read consists of only the final block it would not decrypted because
11992 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
11993 A misplaced 'break' also meant the decrypted final block might not be
11994 copied until the next read.
11997 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
11998 a few extra parameters to the DH structure: these will be useful if
11999 for example we want the value of 'q' or implement X9.42 DH.
12002 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
12003 provides hooks that allow the default DSA functions or functions on a
12004 "per key" basis to be replaced. This allows hardware acceleration and
12005 hardware key storage to be handled without major modification to the
12006 library. Also added low level modexp hooks and CRYPTO_EX structure and
12007 associated functions.
12010 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
12011 as "read only": it can't be written to and the buffer it points to will
12012 not be freed. Reading from a read only BIO is much more efficient than
12013 a normal memory BIO. This was added because there are several times when
12014 an area of memory needs to be read from a BIO. The previous method was
12015 to create a memory BIO and write the data to it, this results in two
12016 copies of the data and an O(n^2) reading algorithm. There is a new
12017 function BIO_new_mem_buf() which creates a read only memory BIO from
12018 an area of memory. Also modified the PKCS#7 routines to use read only
12022 *) Bugfix: ssl23_get_client_hello did not work properly when called in
12023 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
12024 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
12025 but a retry condition occurred while trying to read the rest.
12028 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
12029 NID_pkcs7_encrypted by default: this was wrong since this should almost
12030 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
12031 the encrypted data type: this is a more sensible place to put it and it
12032 allows the PKCS#12 code to be tidied up that duplicated this
12036 *) Changed obj_dat.pl script so it takes its input and output files on
12037 the command line. This should avoid shell escape redirection problems
12041 *) Initial support for certificate extension requests, these are included
12042 in things like Xenroll certificate requests. Included functions to allow
12043 extensions to be obtained and added.
12046 *) -crlf option to s_client and s_server for sending newlines as
12047 CRLF (as required by many protocols).
12050 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
12052 *) Install libRSAglue.a when OpenSSL is built with RSAref.
12053 [Ralf S. Engelschall]
12055 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
12056 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
12058 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
12062 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
12063 DH parameters/keys (q is lost during that conversion, but the resulting
12064 DH parameters contain its length).
12066 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
12067 much faster than DH_generate_parameters (which creates parameters
12068 where p = 2*q + 1), and also the smaller q makes DH computations
12069 much more efficient (160-bit exponentiation instead of 1024-bit
12070 exponentiation); so this provides a convenient way to support DHE
12071 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
12072 utter importance to use
12073 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
12075 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
12076 when such DH parameters are used, because otherwise small subgroup
12077 attacks may become possible!
12080 *) Avoid memory leak in i2d_DHparams.
12083 *) Allow the -k option to be used more than once in the enc program:
12084 this allows the same encrypted message to be read by multiple recipients.
12087 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
12088 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
12089 it will always use the numerical form of the OID, even if it has a short
12093 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
12094 method only got called if p,q,dmp1,dmq1,iqmp components were present,
12095 otherwise bn_mod_exp was called. In the case of hardware keys for example
12096 no private key components need be present and it might store extra data
12097 in the RSA structure, which cannot be accessed from bn_mod_exp.
12098 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
12099 private key operations.
12102 *) Added support for SPARC Linux.
12105 *) pem_password_cb function type incompatibly changed from
12106 typedef int pem_password_cb(char *buf, int size, int rwflag);
12108 ....(char *buf, int size, int rwflag, void *userdata);
12109 so that applications can pass data to their callbacks:
12110 The PEM[_ASN1]_{read,write}... functions and macros now take an
12111 additional void * argument, which is just handed through whenever
12112 the password callback is called.
12113 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
12115 New function SSL_CTX_set_default_passwd_cb_userdata.
12117 Compatibility note: As many C implementations push function arguments
12118 onto the stack in reverse order, the new library version is likely to
12119 interoperate with programs that have been compiled with the old
12120 pem_password_cb definition (PEM_whatever takes some data that
12121 happens to be on the stack as its last argument, and the callback
12122 just ignores this garbage); but there is no guarantee whatsoever that
12125 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
12126 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
12127 problems not only on Windows, but also on some Unix platforms.
12128 To avoid problematic command lines, these definitions are now in an
12129 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
12130 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
12133 *) MIPS III/IV assembler module is reimplemented.
12136 *) More DES library cleanups: remove references to srand/rand and
12137 delete an unused file.
12140 *) Add support for the free Netwide assembler (NASM) under Win32,
12141 since not many people have MASM (ml) and it can be hard to obtain.
12142 This is currently experimental but it seems to work OK and pass all
12143 the tests. Check out INSTALL.W32 for info.
12146 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
12147 without temporary keys kept an extra copy of the server key,
12148 and connections with temporary keys did not free everything in case
12152 *) New function RSA_check_key and new openssl rsa option -check
12153 for verifying the consistency of RSA keys.
12154 [Ulf Moeller, Bodo Moeller]
12156 *) Various changes to make Win32 compile work:
12157 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
12158 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
12159 comparison" warnings.
12160 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
12163 *) Add a debugging option to PKCS#5 v2 key generation function: when
12164 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
12165 derived keys are printed to stderr.
12168 *) Copy the flags in ASN1_STRING_dup().
12169 [Roman E. Pavlov <pre@mo.msk.ru>]
12171 *) The x509 application mishandled signing requests containing DSA
12172 keys when the signing key was also DSA and the parameters didn't match.
12174 It was supposed to omit the parameters when they matched the signing key:
12175 the verifying software was then supposed to automatically use the CA's
12176 parameters if they were absent from the end user certificate.
12178 Omitting parameters is no longer recommended. The test was also
12179 the wrong way round! This was probably due to unusual behaviour in
12180 EVP_cmp_parameters() which returns 1 if the parameters match.
12181 This meant that parameters were omitted when they *didn't* match and
12182 the certificate was useless. Certificates signed with 'ca' didn't have
12184 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
12186 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
12187 The interface is as follows:
12188 Applications can use
12189 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
12190 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
12191 "off" is now the default.
12192 The library internally uses
12193 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
12194 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
12195 to disable memory-checking temporarily.
12197 Some inconsistent states that previously were possible (and were
12198 even the default) are now avoided.
12200 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
12201 with each memory chunk allocated; this is occasionally more helpful
12202 than just having a counter.
12204 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
12206 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
12210 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
12211 which largely parallels "options", but is for changing API behaviour,
12212 whereas "options" are about protocol behaviour.
12213 Initial "mode" flags are:
12215 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
12216 a single record has been written.
12217 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
12218 retries use the same buffer location.
12219 (But all of the contents must be
12223 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
12226 *) Fix problems with no-hmac etc.
12227 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
12229 *) New functions RSA_get_default_method(), RSA_set_method() and
12230 RSA_get_method(). These allows replacement of RSA_METHODs without having
12231 to mess around with the internals of an RSA structure.
12234 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
12235 Also really enable memory leak checks in openssl.c and in some
12237 [Chad C. Mulligan, Bodo Moeller]
12239 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
12240 up the length of negative integers. This has now been simplified to just
12241 store the length when it is first determined and use it later, rather
12242 than trying to keep track of where data is copied and updating it to
12244 [Steve Henson, reported by Brien Wheeler
12245 <bwheeler@authentica-security.com>]
12247 *) Add a new function PKCS7_signatureVerify. This allows the verification
12248 of a PKCS#7 signature but with the signing certificate passed to the
12249 function itself. This contrasts with PKCS7_dataVerify which assumes the
12250 certificate is present in the PKCS#7 structure. This isn't always the
12251 case: certificates can be omitted from a PKCS#7 structure and be
12252 distributed by "out of band" means (such as a certificate database).
12255 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
12256 function prototypes in pem.h, also change util/mkdef.pl to add the
12257 necessary function names.
12260 *) mk1mf.pl (used by Windows builds) did not properly read the
12261 options set by Configure in the top level Makefile, and Configure
12262 was not even able to write more than one option correctly.
12263 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
12266 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
12267 file to be loaded from a BIO or FILE pointer. The BIO version will
12268 for example allow memory BIOs to contain config info.
12271 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
12272 Whoever hopes to achieve shared-library compatibility across versions
12273 must use this, not the compile-time macro.
12274 (Exercise 0.9.4: Which is the minimum library version required by
12276 Note: All this applies only to multi-threaded programs, others don't
12280 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
12281 through a BIO pair triggered the default case, i.e.
12282 SSLerr(...,SSL_R_UNKNOWN_STATE).
12285 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
12286 can use the SSL library even if none of the specific BIOs is
12290 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
12291 for the encoded length.
12292 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
12294 *) Add initial documentation of the X509V3 functions.
12297 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
12298 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
12299 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
12300 secure PKCS#8 private key format with a high iteration count.
12303 *) Fix determination of Perl interpreter: A perl or perl5
12304 _directory_ in $PATH was also accepted as the interpreter.
12305 [Ralf S. Engelschall]
12307 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
12308 wrong with it but it was very old and did things like calling
12309 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
12310 unusual formatting.
12313 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
12314 to use the new extension code.
12317 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
12318 with macros. This should make it easier to change their form, add extra
12319 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
12323 *) Add to configuration table a new entry that can specify an alternative
12324 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
12325 according to Mark Crispin <MRC@Panda.COM>.
12329 *) DES CBC did not update the IV. Weird.
12332 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
12333 Changing the behaviour of the former might break existing programs --
12334 where IV updating is needed, des_ncbc_encrypt can be used.
12337 *) When bntest is run from "make test" it drives bc to check its
12338 calculations, as well as internally checking them. If an internal check
12339 fails, it needs to cause bc to give a non-zero result or make test carries
12340 on without noticing the failure. Fixed.
12343 *) DES library cleanups.
12346 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
12347 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
12348 ciphers. NOTE: although the key derivation function has been verified
12349 against some published test vectors it has not been extensively tested
12350 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
12354 *) Instead of "mkdir -p", which is not fully portable, use new
12355 Perl script "util/mkdir-p.pl".
12358 *) Rewrite the way password based encryption (PBE) is handled. It used to
12359 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
12360 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
12361 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
12362 the 'parameter' field of the AlgorithmIdentifier is passed to the
12363 underlying key generation function so it must do its own ASN1 parsing.
12364 This has also changed the EVP_PBE_CipherInit() function which now has a
12365 'parameter' argument instead of literal salt and iteration count values
12366 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
12369 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
12370 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
12371 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
12372 KEY" because this clashed with PKCS#8 unencrypted string. Since this
12373 value was just used as a "magic string" and not used directly its
12374 value doesn't matter.
12377 *) Introduce some semblance of const correctness to BN. Shame C doesn't
12381 *) "linux-sparc64" configuration (ultrapenguin).
12382 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
12383 "linux-sparc" configuration.
12384 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
12386 *) config now generates no-xxx options for missing ciphers.
12389 *) Support the EBCDIC character set (work in progress).
12390 File ebcdic.c not yet included because it has a different license.
12391 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
12393 *) Support BS2000/OSD-POSIX.
12394 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
12396 *) Make callbacks for key generation use void * instead of char *.
12399 *) Make S/MIME samples compile (not yet tested).
12402 *) Additional typesafe stacks.
12405 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
12409 Changes between 0.9.3 and 0.9.3a [29 May 1999]
12411 *) New configuration variant "sco5-gcc".
12413 *) Updated some demos.
12414 [Sean O Riordain, Wade Scholine]
12416 *) Add missing BIO_free at exit of pkcs12 application.
12419 *) Fix memory leak in conf.c.
12422 *) Updates for Win32 to assembler version of MD5.
12425 *) Set #! path to perl in apps/der_chop to where we found it
12426 instead of using a fixed path.
12429 *) SHA library changes for irix64-mips4-cc.
12432 *) Improvements for VMS support.
12436 Changes between 0.9.2b and 0.9.3 [24 May 1999]
12438 *) Bignum library bug fix. IRIX 6 passes "make test" now!
12439 This also avoids the problems with SC4.2 and unpatched SC5.
12440 [Andy Polyakov <appro@fy.chalmers.se>]
12442 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
12443 These are required because of the typesafe stack would otherwise break
12444 existing code. If old code used a structure member which used to be STACK
12445 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
12446 sk_num or sk_value it would produce an error because the num, data members
12447 are not present in STACK_OF. Now it just produces a warning. sk_set
12448 replaces the old method of assigning a value to sk_value
12449 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
12450 that does this will no longer work (and should use sk_set instead) but
12451 this could be regarded as a "questionable" behaviour anyway.
12454 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
12455 correctly handle encrypted S/MIME data.
12458 *) Change type of various DES function arguments from des_cblock
12459 (which means, in function argument declarations, pointer to char)
12460 to des_cblock * (meaning pointer to array with 8 char elements),
12461 which allows the compiler to do more typechecking; it was like
12462 that back in SSLeay, but with lots of ugly casts.
12464 Introduce new type const_des_cblock.
12467 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
12468 problems: find RecipientInfo structure that matches recipient certificate
12469 and initialise the ASN1 structures properly based on passed cipher.
12472 *) Belatedly make the BN tests actually check the results.
12475 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
12476 to and from BNs: it was completely broken. New compilation option
12477 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
12478 key elements as negative integers.
12481 *) Reorganize and speed up MD5.
12482 [Andy Polyakov <appro@fy.chalmers.se>]
12485 [Richard Levitte <richard@levitte.org>]
12487 *) New option -out to asn1parse to allow the parsed structure to be
12488 output to a file. This is most useful when combined with the -strparse
12489 option to examine the output of things like OCTET STRINGS.
12492 *) Make SSL library a little more fool-proof by not requiring any longer
12493 that SSL_set_{accept,connect}_state be called before
12494 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
12495 in many applications because usually everything *appeared* to work as
12496 intended anyway -- now it really works as intended).
12499 *) Move openssl.cnf out of lib/.
12502 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
12503 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
12504 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
12505 [Ralf S. Engelschall]
12507 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
12508 handle PKCS#7 enveloped data properly.
12509 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
12511 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
12512 copying pointers. The cert_st handling is changed by this in
12513 various ways (and thus what used to be known as ctx->default_cert
12514 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
12515 any longer when s->cert does not give us what we need).
12516 ssl_cert_instantiate becomes obsolete by this change.
12517 As soon as we've got the new code right (possibly it already is?),
12518 we have solved a couple of bugs of the earlier code where s->cert
12519 was used as if it could not have been shared with other SSL structures.
12521 Note that using the SSL API in certain dirty ways now will result
12522 in different behaviour than observed with earlier library versions:
12523 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
12524 does not influence s as it used to.
12526 In order to clean up things more thoroughly, inside SSL_SESSION
12527 we don't use CERT any longer, but a new structure SESS_CERT
12528 that holds per-session data (if available); currently, this is
12529 the peer's certificate chain and, for clients, the server's certificate
12530 and temporary key. CERT holds only those values that can have
12531 meaningful defaults in an SSL_CTX.
12534 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
12535 from the internal representation. Various PKCS#7 fixes: remove some
12536 evil casts and set the enc_dig_alg field properly based on the signing
12540 *) Allow PKCS#12 password to be set from the command line or the
12541 environment. Let 'ca' get its config file name from the environment
12542 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
12546 *) Allow certificate policies extension to use an IA5STRING for the
12547 organization field. This is contrary to the PKIX definition but
12548 VeriSign uses it and IE5 only recognises this form. Document 'x509'
12552 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
12553 without disallowing inline assembler and the like for non-pedantic builds.
12556 *) Support Borland C++ builder.
12557 [Janez Jere <jj@void.si>, modified by Ulf Möller]
12559 *) Support Mingw32.
12562 *) SHA-1 cleanups and performance enhancements.
12563 [Andy Polyakov <appro@fy.chalmers.se>]
12565 *) Sparc v8plus assembler for the bignum library.
12566 [Andy Polyakov <appro@fy.chalmers.se>]
12568 *) Accept any -xxx and +xxx compiler options in Configure.
12571 *) Update HPUX configuration.
12574 *) Add missing sk_<type>_unshift() function to safestack.h
12575 [Ralf S. Engelschall]
12577 *) New function SSL_CTX_use_certificate_chain_file that sets the
12578 "extra_cert"s in addition to the certificate. (This makes sense
12579 only for "PEM" format files, as chains as a whole are not
12583 *) Support verify_depth from the SSL API.
12584 x509_vfy.c had what can be considered an off-by-one-error:
12585 Its depth (which was not part of the external interface)
12586 was actually counting the number of certificates in a chain;
12587 now it really counts the depth.
12590 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
12591 instead of X509err, which often resulted in confusing error
12592 messages since the error codes are not globally unique
12593 (e.g. an alleged error in ssl3_accept when a certificate
12594 didn't match the private key).
12596 *) New function SSL_CTX_set_session_id_context that allows to set a default
12597 value (so that you don't need SSL_set_session_id_context for each
12598 connection using the SSL_CTX).
12601 *) OAEP decoding bug fix.
12604 *) Support INSTALL_PREFIX for package builders, as proposed by
12608 *) New Configure options "threads" and "no-threads". For systems
12609 where the proper compiler options are known (currently Solaris
12610 and Linux), "threads" is the default.
12613 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
12616 *) Install various scripts to $(OPENSSLDIR)/misc, not to
12617 $(INSTALLTOP)/bin -- they shouldn't clutter directories
12618 such as /usr/local/bin.
12621 *) "make linux-shared" to build shared libraries.
12622 [Niels Poppe <niels@netbox.org>]
12624 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
12627 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
12628 extension adding in x509 utility.
12631 *) Remove NOPROTO sections and error code comments.
12634 *) Partial rewrite of the DEF file generator to now parse the ANSI
12638 *) New Configure options --prefix=DIR and --openssldir=DIR.
12641 *) Complete rewrite of the error code script(s). It is all now handled
12642 by one script at the top level which handles error code gathering,
12643 header rewriting and C source file generation. It should be much better
12644 than the old method: it now uses a modified version of Ulf's parser to
12645 read the ANSI prototypes in all header files (thus the old K&R definitions
12646 aren't needed for error creation any more) and do a better job of
12647 translating function codes into names. The old 'ASN1 error code imbedded
12648 in a comment' is no longer necessary and it doesn't use .err files which
12649 have now been deleted. Also the error code call doesn't have to appear all
12650 on one line (which resulted in some large lines...).
12653 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
12656 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
12657 0 (which usually indicates a closed connection), but continue reading.
12660 *) Fix some race conditions.
12663 *) Add support for CRL distribution points extension. Add Certificate
12664 Policies and CRL distribution points documentation.
12667 *) Move the autogenerated header file parts to crypto/opensslconf.h.
12670 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
12671 8 of keying material. Merlin has also confirmed interop with this fix
12672 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
12673 [Merlin Hughes <merlin@baltimore.ie>]
12675 *) Fix lots of warnings.
12676 [Richard Levitte <levitte@stacken.kth.se>]
12678 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
12679 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
12680 [Richard Levitte <levitte@stacken.kth.se>]
12682 *) Fix problems with sizeof(long) == 8.
12683 [Andy Polyakov <appro@fy.chalmers.se>]
12685 *) Change functions to ANSI C.
12688 *) Fix typos in error codes.
12689 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
12691 *) Remove defunct assembler files from Configure.
12694 *) SPARC v8 assembler BIGNUM implementation.
12695 [Andy Polyakov <appro@fy.chalmers.se>]
12697 *) Support for Certificate Policies extension: both print and set.
12698 Various additions to support the r2i method this uses.
12701 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
12702 return a const string when you are expecting an allocated buffer.
12705 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
12706 types DirectoryString and DisplayText.
12709 *) Add code to allow r2i extensions to access the configuration database,
12710 add an LHASH database driver and add several ctx helper functions.
12713 *) Fix an evil bug in bn_expand2() which caused various BN functions to
12714 fail when they extended the size of a BIGNUM.
12717 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
12718 support typesafe stack.
12721 *) Fix typo in SSL_[gs]et_options().
12722 [Nils Frostberg <nils@medcom.se>]
12724 *) Delete various functions and files that belonged to the (now obsolete)
12725 old X509V3 handling code.
12728 *) New Configure option "rsaref".
12731 *) Don't auto-generate pem.h.
12734 *) Introduce type-safe ASN.1 SETs.
12737 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
12738 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
12740 *) Introduce type-safe STACKs. This will almost certainly break lots of code
12741 that links with OpenSSL (well at least cause lots of warnings), but fear
12742 not: the conversion is trivial, and it eliminates loads of evil casts. A
12743 few STACKed things have been converted already. Feel free to convert more.
12744 In the fullness of time, I'll do away with the STACK type altogether.
12747 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
12748 specified in <certfile> by updating the entry in the index.txt file.
12749 This way one no longer has to edit the index.txt file manually for
12750 revoking a certificate. The -revoke option does the gory details now.
12751 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
12753 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
12754 `-text' option at all and this way the `-noout -text' combination was
12755 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
12756 [Ralf S. Engelschall]
12758 *) Make sure a corresponding plain text error message exists for the
12759 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
12760 verify callback function determined that a certificate was revoked.
12761 [Ralf S. Engelschall]
12763 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
12764 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
12765 all available ciphers including rc5, which was forgotten until now.
12766 In order to let the testing shell script know which algorithms
12767 are available, a new (up to now undocumented) command
12768 "openssl list-cipher-commands" is used.
12771 *) Bugfix: s_client occasionally would sleep in select() when
12772 it should have checked SSL_pending() first.
12775 *) New functions DSA_do_sign and DSA_do_verify to provide access to
12776 the raw DSA values prior to ASN.1 encoding.
12779 *) Tweaks to Configure
12780 [Niels Poppe <niels@netbox.org>]
12782 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
12786 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
12789 *) New config option to avoid instructions that are illegal on the 80386.
12790 The default code is faster, but requires at least a 486.
12793 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
12794 SSL2_SERVER_VERSION (not used at all) macros, which are now the
12795 same as SSL2_VERSION anyway.
12798 *) New "-showcerts" option for s_client.
12801 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
12802 application. Various cleanups and fixes.
12805 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
12806 modify error routines to work internally. Add error codes and PBE init
12807 to library startup routines.
12810 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
12811 packing functions to asn1 and evp. Changed function names and error
12812 codes along the way.
12815 *) PKCS12 integration: and so it begins... First of several patches to
12816 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
12817 objects to objects.h
12820 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
12821 and display support for Thawte strong extranet extension.
12824 *) Add LinuxPPC support.
12825 [Jeff Dubrule <igor@pobox.org>]
12827 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
12828 bn_div_words in alpha.s.
12829 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
12831 *) Make sure the RSA OAEP test is skipped under -DRSAref because
12832 OAEP isn't supported when OpenSSL is built with RSAref.
12833 [Ulf Moeller <ulf@fitug.de>]
12835 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
12836 so they no longer are missing under -DNOPROTO.
12837 [Soren S. Jorvang <soren@t.dk>]
12840 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
12842 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
12843 doesn't work when the session is reused. Coming soon!
12846 *) Fix a security hole, that allows sessions to be reused in the wrong
12847 context thus bypassing client cert protection! All software that uses
12848 client certs and session caches in multiple contexts NEEDS PATCHING to
12849 allow session reuse! A fuller solution is in the works.
12850 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
12852 *) Some more source tree cleanups (removed obsolete files
12853 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
12854 permission on "config" script to be executable) and a fix for the INSTALL
12856 [Ulf Moeller <ulf@fitug.de>]
12858 *) Remove some legacy and erroneous uses of malloc, free instead of
12860 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
12862 *) Make rsa_oaep_test return non-zero on error.
12863 [Ulf Moeller <ulf@fitug.de>]
12865 *) Add support for native Solaris shared libraries. Configure
12866 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
12867 if someone would make that last step automatic.
12868 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
12870 *) ctx_size was not built with the right compiler during "make links". Fixed.
12873 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
12874 except NULL ciphers". This means the default cipher list will no longer
12875 enable NULL ciphers. They need to be specifically enabled e.g. with
12876 the string "DEFAULT:eNULL".
12879 *) Fix to RSA private encryption routines: if p < q then it would
12880 occasionally produce an invalid result. This will only happen with
12881 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
12884 *) Be less restrictive and allow also `perl util/perlpath.pl
12885 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
12886 because this way one can also use an interpreter named `perl5' (which is
12887 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
12888 installed as `perl').
12889 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
12891 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
12892 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
12894 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
12895 advapi32.lib to Win32 build and change the pem test comparison
12896 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
12897 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
12898 and crypto/des/ede_cbcm_enc.c.
12901 *) DES quad checksum was broken on big-endian architectures. Fixed.
12904 *) Comment out two functions in bio.h that aren't implemented. Fix up the
12905 Win32 test batch file so it (might) work again. The Win32 test batch file
12906 is horrible: I feel ill....
12909 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
12910 in e_os.h. Audit of header files to check ANSI and non ANSI
12911 sections: 10 functions were absent from non ANSI section and not exported
12912 from Windows DLLs. Fixed up libeay.num for new functions.
12915 *) Make `openssl version' output lines consistent.
12916 [Ralf S. Engelschall]
12918 *) Fix Win32 symbol export lists for BIO functions: Added
12919 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
12920 to ms/libeay{16,32}.def.
12921 [Ralf S. Engelschall]
12923 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
12924 fine under Unix and passes some trivial tests I've now added. But the
12925 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
12926 added to make sure no one expects that this stuff really works in the
12927 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
12928 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
12930 [Ralf S. Engelschall]
12932 *) Fix the generation of two part addresses in perl.
12933 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
12935 *) Add config entry for Linux on MIPS.
12936 [John Tobey <jtobey@channel1.com>]
12938 *) Make links whenever Configure is run, unless we are on Windoze.
12941 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
12942 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
12946 *) Add a useful kludge to allow package maintainers to specify compiler and
12947 other platforms details on the command line without having to patch the
12948 Configure script everytime: One now can use ``perl Configure
12949 <id>:<details>'', i.e. platform ids are allowed to have details appended
12950 to them (separated by colons). This is treated as there would be a static
12951 pre-configured entry in Configure's %table under key <id> with value
12952 <details> and ``perl Configure <id>'' is called. So, when you want to
12953 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
12954 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
12955 now, which overrides the FreeBSD-elf entry on-the-fly.
12956 [Ralf S. Engelschall]
12958 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
12961 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
12962 on the `perl Configure ...' command line. This way one can compile
12963 OpenSSL libraries with Position Independent Code (PIC) which is needed
12964 for linking it into DSOs.
12965 [Ralf S. Engelschall]
12967 *) Remarkably, export ciphers were totally broken and no-one had noticed!
12971 *) Cleaned up the LICENSE document: The official contact for any license
12972 questions now is the OpenSSL core team under openssl-core@openssl.org.
12973 And add a paragraph about the dual-license situation to make sure people
12974 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
12975 to the OpenSSL toolkit.
12976 [Ralf S. Engelschall]
12978 *) General source tree makefile cleanups: Made `making xxx in yyy...'
12979 display consistent in the source tree and replaced `/bin/rm' by `rm'.
12980 Additionally cleaned up the `make links' target: Remove unnecessary
12981 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
12982 to speed processing and no longer clutter the display with confusing
12983 stuff. Instead only the actually done links are displayed.
12984 [Ralf S. Engelschall]
12986 *) Permit null encryption ciphersuites, used for authentication only. It used
12987 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
12988 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
12992 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
12993 signed attributes when verifying signatures (this would break them),
12994 the detached data encoding was wrong and public keys obtained using
12995 X509_get_pubkey() weren't freed.
12998 *) Add text documentation for the BUFFER functions. Also added a work around
12999 to a Win95 console bug. This was triggered by the password read stuff: the
13000 last character typed gets carried over to the next fread(). If you were
13001 generating a new cert request using 'req' for example then the last
13002 character of the passphrase would be CR which would then enter the first
13006 *) Added the new `Includes OpenSSL Cryptography Software' button as
13007 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
13008 button and can be used by applications based on OpenSSL to show the
13009 relationship to the OpenSSL project.
13010 [Ralf S. Engelschall]
13012 *) Remove confusing variables in function signatures in files
13013 ssl/ssl_lib.c and ssl/ssl.h.
13014 [Lennart Bong <lob@kulthea.stacken.kth.se>]
13016 *) Don't install bss_file.c under PREFIX/include/
13017 [Lennart Bong <lob@kulthea.stacken.kth.se>]
13019 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
13020 functions that return function pointers and has support for NT specific
13021 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
13022 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
13023 unsigned to signed types: this was killing the Win32 compile.
13026 *) Add new certificate file to stack functions,
13027 SSL_add_dir_cert_subjects_to_stack() and
13028 SSL_add_file_cert_subjects_to_stack(). These largely supplant
13029 SSL_load_client_CA_file(), and can be used to add multiple certs easily
13030 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
13031 This means that Apache-SSL and similar packages don't have to mess around
13032 to add as many CAs as they want to the preferred list.
13035 *) Experiment with doxygen documentation. Currently only partially applied to
13037 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
13038 openssl.doxy as the configuration file.
13041 *) Get rid of remaining C++-style comments which strict C compilers hate.
13042 [Ralf S. Engelschall, pointed out by Carlos Amengual]
13044 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
13045 compiled in by default: it has problems with large keys.
13048 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
13049 DH private keys and/or callback functions which directly correspond to
13050 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
13051 is needed for applications which have to configure certificates on a
13052 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
13054 For the RSA certificate situation is makes no difference, but
13055 for the DSA certificate situation this fixes the "no shared cipher"
13056 problem where the OpenSSL cipher selection procedure failed because the
13057 temporary keys were not overtaken from the context and the API provided
13058 no way to reconfigure them.
13059 The new functions now let applications reconfigure the stuff and they
13060 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
13061 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
13062 non-public-API function ssl_cert_instantiate() is used as a helper
13063 function and also to reduce code redundancy inside ssl_rsa.c.
13064 [Ralf S. Engelschall]
13066 *) Move s_server -dcert and -dkey options out of the undocumented feature
13067 area because they are useful for the DSA situation and should be
13068 recognized by the users.
13069 [Ralf S. Engelschall]
13071 *) Fix the cipher decision scheme for export ciphers: the export bits are
13072 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
13073 SSL_EXP_MASK. So, the original variable has to be used instead of the
13074 already masked variable.
13075 [Richard Levitte <levitte@stacken.kth.se>]
13077 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
13078 [Richard Levitte <levitte@stacken.kth.se>]
13080 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
13081 from `int' to `unsigned int' because it's a length and initialized by
13082 EVP_DigestFinal() which expects an `unsigned int *'.
13083 [Richard Levitte <levitte@stacken.kth.se>]
13085 *) Don't hard-code path to Perl interpreter on shebang line of Configure
13086 script. Instead use the usual Shell->Perl transition trick.
13087 [Ralf S. Engelschall]
13089 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
13090 (in addition to RSA certificates) to match the behaviour of `openssl dsa
13091 -noout -modulus' as it's already the case for `openssl rsa -noout
13092 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
13093 currently the public key is printed (a decision which was already done by
13094 `openssl dsa -modulus' in the past) which serves a similar purpose.
13095 Additionally the NO_RSA no longer completely removes the whole -modulus
13096 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
13098 [Ralf S. Engelschall]
13100 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
13101 BIO. See the source (crypto/evp/bio_ok.c) for more info.
13102 [Arne Ansper <arne@ats.cyber.ee>]
13104 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
13105 to be added. Now both 'req' and 'ca' can use new objects defined in the
13109 *) Add cool BIO that does syslog (or event log on NT).
13110 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
13112 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
13113 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
13114 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
13115 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
13118 *) Add preliminary config info for new extension code.
13121 *) Make RSA_NO_PADDING really use no padding.
13122 [Ulf Moeller <ulf@fitug.de>]
13124 *) Generate errors when private/public key check is done.
13127 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
13128 for some CRL extensions and new objects added.
13131 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
13132 key usage extension and fuller support for authority key id.
13135 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
13136 padding method for RSA, which is recommended for new applications in PKCS
13137 #1 v2.0 (RFC 2437, October 1998).
13138 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
13139 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
13140 against Bleichbacher's attack on RSA.
13141 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
13144 *) Updates to the new SSL compression code
13145 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13147 *) Fix so that the version number in the master secret, when passed
13148 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
13149 (because the server will not accept higher), that the version number
13150 is 0x03,0x01, not 0x03,0x00
13151 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13153 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
13154 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
13155 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
13158 *) Support for RAW extensions where an arbitrary extension can be
13159 created by including its DER encoding. See apps/openssl.cnf for
13163 *) Make sure latest Perl versions don't interpret some generated C array
13164 code as Perl array code in the crypto/err/err_genc.pl script.
13165 [Lars Weber <3weber@informatik.uni-hamburg.de>]
13167 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
13168 not many people have the assembler. Various Win32 compilation fixes and
13169 update to the INSTALL.W32 file with (hopefully) more accurate Win32
13170 build instructions.
13173 *) Modify configure script 'Configure' to automatically create crypto/date.h
13174 file under Win32 and also build pem.h from pem.org. New script
13175 util/mkfiles.pl to create the MINFO file on environments that can't do a
13176 'make files': perl util/mkfiles.pl >MINFO should work.
13179 *) Major rework of DES function declarations, in the pursuit of correctness
13180 and purity. As a result, many evil casts evaporated, and some weirdness,
13181 too. You may find this causes warnings in your code. Zapping your evil
13182 casts will probably fix them. Mostly.
13185 *) Fix for a typo in asn1.h. Bug fix to object creation script
13186 obj_dat.pl. It considered a zero in an object definition to mean
13187 "end of object": none of the objects in objects.h have any zeros
13188 so it wasn't spotted.
13189 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
13191 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
13192 Masking (CBCM). In the absence of test vectors, the best I have been able
13193 to do is check that the decrypt undoes the encrypt, so far. Send me test
13194 vectors if you have them.
13197 *) Correct calculation of key length for export ciphers (too much space was
13198 allocated for null ciphers). This has not been tested!
13201 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
13202 message is now correct (it understands "crypto" and "ssl" on its
13203 command line). There is also now an "update" option. This will update
13204 the util/ssleay.num and util/libeay.num files with any new functions.
13206 perl util/mkdef.pl crypto ssl update
13207 it will update them.
13210 *) Overhauled the Perl interface (perl/*):
13211 - ported BN stuff to OpenSSL's different BN library
13212 - made the perl/ source tree CVS-aware
13213 - renamed the package from SSLeay to OpenSSL (the files still contain
13214 their history because I've copied them in the repository)
13215 - removed obsolete files (the test scripts will be replaced
13216 by better Test::Harness variants in the future)
13217 [Ralf S. Engelschall]
13219 *) First cut for a very conservative source tree cleanup:
13220 1. merge various obsolete readme texts into doc/ssleay.txt
13221 where we collect the old documents and readme texts.
13222 2. remove the first part of files where I'm already sure that we no
13223 longer need them because of three reasons: either they are just temporary
13224 files which were left by Eric or they are preserved original files where
13225 I've verified that the diff is also available in the CVS via "cvs diff
13226 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
13227 the crypto/md/ stuff).
13228 [Ralf S. Engelschall]
13230 *) More extension code. Incomplete support for subject and issuer alt
13231 name, issuer and authority key id. Change the i2v function parameters
13232 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
13233 what that's for :-) Fix to ASN1 macro which messed up
13234 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
13237 *) Preliminary support for ENUMERATED type. This is largely copied from the
13241 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
13242 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13244 *) Make sure `make rehash' target really finds the `openssl' program.
13245 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
13247 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
13248 like to hear about it if this slows down other processors.
13251 *) Add CygWin32 platform information to Configure script.
13252 [Alan Batie <batie@aahz.jf.intel.com>]
13254 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
13255 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
13257 *) New program nseq to manipulate netscape certificate sequences
13260 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
13264 *) Fixes to BN code. Previously the default was to define BN_RECURSION
13265 but the BN code had some problems that would cause failures when
13266 doing certificate verification and some other functions.
13267 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13269 *) Add ASN1 and PEM code to support netscape certificate sequences.
13272 *) Add ASN1 and PEM code to support netscape certificate sequences.
13275 *) Add several PKIX and private extended key usage OIDs.
13278 *) Modify the 'ca' program to handle the new extension code. Modify
13279 openssl.cnf for new extension format, add comments.
13282 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
13283 and add a sample to openssl.cnf so req -x509 now adds appropriate
13287 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
13288 error code, add initial support to X509_print() and x509 application.
13291 *) Takes a deep breath and start adding X509 V3 extension support code. Add
13292 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
13293 stuff is currently isolated and isn't even compiled yet.
13296 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
13297 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
13298 Removed the versions check from X509 routines when loading extensions:
13299 this allows certain broken certificates that don't set the version
13300 properly to be processed.
13303 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
13304 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
13305 can still be regenerated with "make depend".
13308 *) Spelling mistake in C version of CAST-128.
13309 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
13311 *) Changes to the error generation code. The perl script err-code.pl
13312 now reads in the old error codes and retains the old numbers, only
13313 adding new ones if necessary. It also only changes the .err files if new
13314 codes are added. The makefiles have been modified to only insert errors
13315 when needed (to avoid needlessly modifying header files). This is done
13316 by only inserting errors if the .err file is newer than the auto generated
13317 C file. To rebuild all the error codes from scratch (the old behaviour)
13318 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
13319 or delete all the .err files.
13322 *) CAST-128 was incorrectly implemented for short keys. The C version has
13323 been fixed, but is untested. The assembler versions are also fixed, but
13324 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
13325 to regenerate it if needed.
13326 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
13327 Hagino <itojun@kame.net>]
13329 *) File was opened incorrectly in randfile.c.
13330 [Ulf Möller <ulf@fitug.de>]
13332 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
13333 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
13334 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
13335 al: it's just almost always a UTCTime. Note this patch adds new error
13336 codes so do a "make errors" if there are problems.
13339 *) Correct Linux 1 recognition in config.
13340 [Ulf Möller <ulf@fitug.de>]
13342 *) Remove pointless MD5 hash when using DSA keys in ca.
13343 [Anonymous <nobody@replay.com>]
13345 *) Generate an error if given an empty string as a cert directory. Also
13346 generate an error if handed NULL (previously returned 0 to indicate an
13347 error, but didn't set one).
13348 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
13350 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
13353 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
13354 parameters. This was causing a warning which killed off the Win32 compile.
13357 *) Remove C++ style comments from crypto/bn/bn_local.h.
13358 [Neil Costigan <neil.costigan@celocom.com>]
13360 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
13361 based on a text string, looking up short and long names and finally
13362 "dot" format. The "dot" format stuff didn't work. Added new function
13363 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
13364 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
13365 OID is not part of the table.
13368 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
13369 X509_LOOKUP_by_alias().
13372 *) Sort openssl functions by name.
13375 *) Get the gendsa program working (hopefully) and add it to app list. Remove
13376 encryption from sample DSA keys (in case anyone is interested the password
13380 *) Make _all_ *_free functions accept a NULL pointer.
13381 [Frans Heymans <fheymans@isaserver.be>]
13383 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
13385 [Anonymous <nobody@replay.com>]
13387 *) s_server should send the CAfile as acceptable CAs, not its own cert.
13388 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
13390 *) Don't blow it for numeric -newkey arguments to apps/req.
13391 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
13393 *) Temp key "for export" tests were wrong in s3_srvr.c.
13394 [Anonymous <nobody@replay.com>]
13396 *) Add prototype for temp key callback functions
13397 SSL_CTX_set_tmp_{rsa,dh}_callback().
13400 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
13401 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
13404 *) X509_name_add_entry() freed the wrong thing after an error.
13405 [Arne Ansper <arne@ats.cyber.ee>]
13407 *) rsa_eay.c would attempt to free a NULL context.
13408 [Arne Ansper <arne@ats.cyber.ee>]
13410 *) BIO_s_socket() had a broken should_retry() on Windoze.
13411 [Arne Ansper <arne@ats.cyber.ee>]
13413 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
13414 [Arne Ansper <arne@ats.cyber.ee>]
13416 *) Make sure the already existing X509_STORE->depth variable is initialized
13417 in X509_STORE_new(), but document the fact that this variable is still
13418 unused in the certificate verification process.
13419 [Ralf S. Engelschall]
13421 *) Fix the various library and apps files to free up pkeys obtained from
13422 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
13425 *) Fix reference counting in X509_PUBKEY_get(). This makes
13426 demos/maurice/example2.c work, amongst others, probably.
13427 [Steve Henson and Ben Laurie]
13429 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
13430 `openssl' and second, the shortcut symlinks for the `openssl <command>'
13431 are no longer created. This way we have a single and consistent command
13432 line interface `openssl <command>', similar to `cvs <command>'.
13433 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
13435 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
13436 BIT STRING wrapper always have zero unused bits.
13439 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
13442 *) Make the top-level INSTALL documentation easier to understand.
13445 *) Makefiles updated to exit if an error occurs in a sub-directory
13446 make (including if user presses ^C) [Paul Sutton]
13448 *) Make Montgomery context stuff explicit in RSA data structure.
13451 *) Fix build order of pem and err to allow for generated pem.h.
13454 *) Fix renumbering bug in X509_NAME_delete_entry().
13457 *) Enhanced the err-ins.pl script so it makes the error library number
13458 global and can add a library name. This is needed for external ASN1 and
13459 other error libraries.
13462 *) Fixed sk_insert which never worked properly.
13465 *) Fix ASN1 macros so they can handle indefinite length constructed
13466 EXPLICIT tags. Some non standard certificates use these: they can now
13470 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
13471 into a single doc/ssleay.txt bundle. This way the information is still
13472 preserved but no longer messes up this directory. Now it's new room for
13473 the new set of documentation files.
13474 [Ralf S. Engelschall]
13476 *) SETs were incorrectly DER encoded. This was a major pain, because they
13477 shared code with SEQUENCEs, which aren't coded the same. This means that
13478 almost everything to do with SETs or SEQUENCEs has either changed name or
13479 number of arguments.
13480 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
13482 *) Fix test data to work with the above.
13485 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
13486 was already fixed by Eric for 0.9.1 it seems.
13487 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
13489 *) Autodetect FreeBSD3.
13492 *) Fix various bugs in Configure. This affects the following platforms:
13496 unixware-2.0-pentium
13500 *) Eliminate generated files from CVS. Reorder tests to regenerate files
13501 before they are needed.
13504 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
13508 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
13510 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
13511 changed SSLeay to OpenSSL in version strings.
13512 [Ralf S. Engelschall]
13514 *) Some fixups to the top-level documents.
13517 *) Fixed the nasty bug where rsaref.h was not found under compile-time
13518 because the symlink to include/ was missing.
13519 [Ralf S. Engelschall]
13521 *) Incorporated the popular no-RSA/DSA-only patches
13522 which allow to compile a RSA-free SSLeay.
13523 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
13525 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
13526 when "ssleay" is still not found.
13527 [Ralf S. Engelschall]
13529 *) Added more platforms to Configure: Cray T3E, HPUX 11,
13530 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
13532 *) Updated the README file.
13533 [Ralf S. Engelschall]
13535 *) Added various .cvsignore files in the CVS repository subdirs
13536 to make a "cvs update" really silent.
13537 [Ralf S. Engelschall]
13539 *) Recompiled the error-definition header files and added
13540 missing symbols to the Win32 linker tables.
13541 [Ralf S. Engelschall]
13543 *) Cleaned up the top-level documents;
13544 o new files: CHANGES and LICENSE
13545 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
13546 o merged COPYRIGHT into LICENSE
13547 o removed obsolete TODO file
13548 o renamed MICROSOFT to INSTALL.W32
13549 [Ralf S. Engelschall]
13551 *) Removed dummy files from the 0.9.1b source tree:
13552 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
13553 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
13554 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
13555 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
13556 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
13557 [Ralf S. Engelschall]
13559 *) Added various platform portability fixes.
13562 *) The Genesis of the OpenSSL rpject:
13563 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
13564 Young and Tim J. Hudson created while they were working for C2Net until
13566 [The OpenSSL Project]
13569 Changes between 0.9.0b and 0.9.1b [not released]
13571 *) Updated a few CA certificates under certs/
13574 *) Changed some BIGNUM api stuff.
13577 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
13578 DGUX x86, Linux Alpha, etc.
13581 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
13582 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
13586 *) Add -strparse option to asn1pars program which parses nested
13588 [Dr Stephen Henson <shenson@bigfoot.com>]
13590 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
13593 *) DSA fix for "ca" program.
13596 *) Added "-genkey" option to "dsaparam" program.
13599 *) Added RIPE MD160 (rmd160) message digest.
13602 *) Added -a (all) option to "ssleay version" command.
13605 *) Added PLATFORM define which is the id given to Configure.
13608 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
13611 *) Extended the ASN.1 parser routines.
13614 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
13617 *) Added a BN_CTX to the BN library.
13620 *) Fixed the weak key values in DES library
13623 *) Changed API in EVP library for cipher aliases.
13626 *) Added support for RC2/64bit cipher.
13629 *) Converted the lhash library to the crypto/mem.c functions.
13632 *) Added more recognized ASN.1 object ids.
13635 *) Added more RSA padding checks for SSL/TLS.
13638 *) Added BIO proxy/filter functionality.
13641 *) Added extra_certs to SSL_CTX which can be used
13642 send extra CA certificates to the client in the CA cert chain sending
13643 process. It can be configured with SSL_CTX_add_extra_chain_cert().
13646 *) Now Fortezza is denied in the authentication phase because
13647 this is key exchange mechanism is not supported by SSLeay at all.
13650 *) Additional PKCS1 checks.
13653 *) Support the string "TLSv1" for all TLS v1 ciphers.
13656 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
13657 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
13660 *) Fixed a few memory leaks.
13663 *) Fixed various code and comment typos.
13666 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
13667 bytes sent in the client random.
13668 [Edward Bishop <ebishop@spyglass.com>]