5 Changes between 1.0.1 and 1.1.0 [xx XXX xxxx]
7 *) Initial untested CCM support via EVP. Interface is very similar to GCM
8 case except we must supply all data in one chunk (i.e. no update, final)
9 and the message length must be supplied if AAD is used.
12 *) Initial version of POST overhaul. Add POST callback to allow the status
13 of POST to be monitored and/or failures induced. Modify fips_test_suite
14 to use callback. Always run all selftests even if one fails.
17 *) XTS support including algorithm test driver in the fips_gcmtest program.
18 Note: this does increase the maximum key length from 32 to 64 bytes but
19 there should be no binary compatibility issues as existing applications
20 will never use XTS mode.
23 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
24 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
25 performs algorithm blocking for unapproved PRNG types. Also do not
26 set PRNG type in FIPS_mode_set(): leave this to the application.
27 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
28 the standard OpenSSL PRNG: set additional data to a date time vector.
31 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
32 This shouldn't present any incompatibility problems because applications
33 shouldn't be using these directly and any that are will need to rethink
34 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
37 *) Extensive self tests and health checking required by SP800-90 DRBG.
38 Remove strength parameter from FIPS_drbg_instantiate and always
39 instantiate at maximum supported strength.
43 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
45 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
48 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
51 *) New function DH_compute_key_padded() to compute a DH key and pad with
52 leading zeroes if needed: this complies with SP800-56A et al.
55 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
56 anything, incomplete, subject to change and largely untested at present.
59 *) Modify fipscanisteronly build option to only build the necessary object
60 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
63 *) Add experimental option FIPSSYMS to give all symbols in
64 fipscanister.o and FIPS or fips prefix. This will avoid
65 conflicts with future versions of OpenSSL. Add perl script
66 util/fipsas.pl to preprocess assembly language source files
67 and rename any affected symbols.
70 *) Add selftest checks and algorithm block of non-fips algorithms in
71 FIPS mode. Remove DES2 from selftests.
74 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
75 return internal method without any ENGINE dependencies. Add new
76 tiny fips sign and verify functions.
79 *) New build option no-ec2m to disable characteristic 2 code.
82 *) New build option "fipscanisteronly". This only builds fipscanister.o
83 and (currently) associated fips utilities. Uses the file Makefile.fips
84 instead of Makefile.org as the prototype.
87 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
88 Update fips_gcmtest to use IV generator.
91 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
92 setting output buffer to NULL. The *Final function must be
93 called although it will not retrieve any additional data. The tag
94 can be set or retrieved with a ctrl. The IV length is by default 12
95 bytes (96 bits) but can be set to an alternative value. If the IV
96 length exceeds the maximum IV length (currently 16 bytes) it cannot be
100 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
101 underlying do_cipher function handles all cipher semantics itself
102 including padding and finalisation. This is useful if (for example)
103 an ENGINE cipher handles block padding itself. The behaviour of
104 do_cipher is subtly changed if this flag is set: the return value
105 is the number of characters written to the output buffer (zero is
106 no longer an error code) or a negative error code. Also if the
107 input buffer is NULL and length 0 finalisation should be performed.
110 *) If a candidate issuer certificate is already part of the constructed
111 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
114 *) Improve forward-security support: add functions
116 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
117 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
119 for use by SSL/TLS servers; the callback function will be called whenever a
120 new session is created, and gets to decide whether the session may be
121 cached to make it resumable (return 0) or not (return 1). (As by the
122 SSL/TLS protocol specifications, the session_id sent by the server will be
123 empty to indicate that the session is not resumable; also, the server will
124 not generate RFC 4507 (RFC 5077) session tickets.)
126 A simple reasonable callback implementation is to return is_forward_secure.
127 This parameter will be set to 1 or 0 depending on the ciphersuite selected
128 by the SSL/TLS server library, indicating whether it can provide forward
130 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
132 *) Add Next Protocol Negotiation,
133 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
134 disabled with a no-npn flag to config or Configure. Code donated
136 [Adam Langley <agl@google.com> and Ben Laurie]
138 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
139 all platforms. Move ssize_t definition from e_os.h to the public
140 header file e_os2.h as it now appears in public header file cms.h
143 *) New function OPENSSL_gmtime_diff to find the difference in days
144 and seconds between two tm structures. This will be used to provide
145 additional functionality for ASN1_TIME.
148 *) New -sigopt option to the ca, req and x509 utilities. Additional
149 signature parameters can be passed using this option and in
153 *) Add RSA PSS signing function. This will generate and set the
154 appropriate AlgorithmIdentifiers for PSS based on those in the
155 corresponding EVP_MD_CTX structure. No application support yet.
158 *) Support for companion algorithm specific ASN1 signing routines.
159 New function ASN1_item_sign_ctx() signs a pre-initialised
160 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
161 the appropriate parameters.
164 *) Add new algorithm specific ASN1 verification initialisation function
165 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
166 handling will be the same no matter what EVP_PKEY_METHOD is used.
167 Add a PSS handler to support verification of PSS signatures: checked
168 against a number of sample certificates.
171 *) Add signature printing for PSS. Add PSS OIDs.
172 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
174 *) Add algorithm specific signature printing. An individual ASN1 method
175 can now print out signatures instead of the standard hex dump.
177 More complex signatures (e.g. PSS) can print out more meaningful
178 information. Include DSA version that prints out the signature
182 *) Add -trusted_first option which attempts to find certificates in the
183 trusted store even if an untrusted chain is also supplied.
186 *) Initial experimental support for explicitly trusted non-root CAs.
187 OpenSSL still tries to build a complete chain to a root but if an
188 intermediate CA has a trust setting included that is used. The first
189 setting is used: whether to trust or reject.
192 *) New -verify_name option in command line utilities to set verification
196 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
197 Add CMAC pkey methods.
200 *) Experiemental regnegotiation in s_server -www mode. If the client
201 browses /reneg connection is renegotiated. If /renegcert it is
202 renegotiated requesting a certificate.
205 *) Add an "external" session cache for debugging purposes to s_server. This
206 should help trace issues which normally are only apparent in deployed
207 multi-process servers.
210 *) Experiemental password based recipient info support for CMS library:
211 implementing RFC3211.
214 *) Split password based encryption into PBES2 and PBKDF2 functions. This
215 neatly separates the code into cipher and PBE sections and is required
216 for some algorithms that split PBES2 into separate pieces (such as
220 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
221 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
222 BIO_set_cipher() and some obscure PEM functions were changed so they
223 can now return an error. The RAND changes required a change to the
224 RAND_METHOD structure.
227 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
228 a gcc attribute to warn if the result of a function is ignored. This
229 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
230 whose return value is often ignored.
233 Changes between 1.0.0d and 1.0.1 [xx XXX xxxx]
235 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
238 *) Add EC_GFp_nistp224_method(), a 64-bit optimized implementation for
239 elliptic curve NIST-P224 with constant-time single point multiplication on
240 typical inputs. EC_GROUP_new_by_curve_name() will automatically use this
241 (while EC_GROUP_new_curve_GFp() currently won't and prefers the more
242 flexible implementations).
244 The implementation requires support for the nonstandard type __uint128_t,
245 and so is disabled by default. To include this in your build of OpenSSL,
246 use -DEC_NISTP224_64_GCC_128 on the Configure (or config) command line,
247 and run "make depend" (or "make update").
248 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
250 *) Permit abbreviated handshakes when renegotiating using the function
251 SSL_renegotiate_abbreviated().
252 [Robin Seggelmann <seggelmann@fh-muenster.de>]
254 *) Add call to ENGINE_register_all_complete() to
255 ENGINE_load_builtin_engines(), so some implementations get used
256 automatically instead of needing explicit application support.
259 *) Add support for TLS key exporter as described in RFC5705.
260 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
262 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
263 a few changes are required:
265 Add SSL_OP_NO_TLSv1_1 flag.
267 Update version checking logic to handle version 1.1.
268 Add explicit IV handling (ported from DTLS code).
269 Add command line options to s_client/s_server.
272 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
274 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
275 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
277 *) Fix bug in string printing code: if *any* escaping is enabled we must
278 escape the escape character (backslash) or the resulting string is
282 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
284 *) Disable code workaround for ancient and obsolete Netscape browsers
285 and servers: an attacker can use it in a ciphersuite downgrade attack.
286 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
289 *) Fixed J-PAKE implementation error, originally discovered by
290 Sebastien Martini, further info and confirmation from Stefan
291 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
294 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
296 *) Fix extension code to avoid race conditions which can result in a buffer
297 overrun vulnerability: resumed sessions must not be modified as they can
298 be shared by multiple threads. CVE-2010-3864
301 *) Fix WIN32 build system to correctly link an ENGINE directory into
305 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
307 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
309 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
311 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
313 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
314 context. The operation can be customised via the ctrl mechanism in
315 case ENGINEs want to include additional functionality.
318 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
321 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
322 output hashes compatible with older versions of OpenSSL.
323 [Willy Weisz <weisz@vcpc.univie.ac.at>]
325 *) Fix compression algorithm handling: if resuming a session use the
326 compression algorithm of the resumed session instead of determining
327 it from client hello again. Don't allow server to change algorithm.
330 *) Add load_crls() function to apps tidying load_certs() too. Add option
331 to verify utility to allow additional CRLs to be included.
334 *) Update OCSP request code to permit adding custom headers to the request:
335 some responders need this.
338 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
340 [Julia Lawall <julia@diku.dk>]
342 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
343 needlessly dereferenced structures, used obsolete functions and
344 didn't handle all updated verify codes correctly.
347 *) Disable MD2 in the default configuration.
350 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
351 indicate the initial BIO being pushed or popped. This makes it possible
352 to determine whether the BIO is the one explicitly called or as a result
353 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
354 it handles reference counts correctly and doesn't zero out the I/O bio
355 when it is not being explicitly popped. WARNING: applications which
356 included workarounds for the old buggy behaviour will need to be modified
357 or they could free up already freed BIOs.
360 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
361 renaming to all platforms (within the 0.9.8 branch, this was
362 done conditionally on Netware platforms to avoid a name clash).
363 [Guenter <lists@gknw.net>]
365 *) Add ECDHE and PSK support to DTLS.
366 [Michael Tuexen <tuexen@fh-muenster.de>]
368 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
372 *) Add "missing" function EVP_MD_flags() (without this the only way to
373 retrieve a digest flags is by accessing the structure directly. Update
374 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
375 or cipher is registered as in the "from" argument. Print out all
376 registered digests in the dgst usage message instead of manually
377 attempting to work them out.
380 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
381 this allows the use of compression and extensions. Change default cipher
382 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
383 by default unless an application cipher string requests it.
386 *) Alter match criteria in PKCS12_parse(). It used to try to use local
387 key ids to find matching certificates and keys but some PKCS#12 files
388 don't follow the (somewhat unwritten) rules and this strategy fails.
389 Now just gather all certificates together and the first private key
390 then look for the first certificate that matches the key.
393 *) Support use of registered digest and cipher names for dgst and cipher
394 commands instead of having to add each one as a special case. So now
401 openssl dgst -sha256 foo
403 and this works for ENGINE based algorithms too.
407 *) Update Gost ENGINE to support parameter files.
408 [Victor B. Wagner <vitus@cryptocom.ru>]
410 *) Support GeneralizedTime in ca utility.
411 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
413 *) Enhance the hash format used for certificate directory links. The new
414 form uses the canonical encoding (meaning equivalent names will work
415 even if they aren't identical) and uses SHA1 instead of MD5. This form
416 is incompatible with the older format and as a result c_rehash should
417 be used to rebuild symbolic links.
420 *) Make PKCS#8 the default write format for private keys, replacing the
421 traditional format. This form is standardised, more secure and doesn't
422 include an implicit MD5 dependency.
425 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
426 committed to OpenSSL should pass this lot as a minimum.
429 *) Add session ticket override functionality for use by EAP-FAST.
430 [Jouni Malinen <j@w1.fi>]
432 *) Modify HMAC functions to return a value. Since these can be implemented
433 in an ENGINE errors can occur.
436 *) Type-checked OBJ_bsearch_ex.
439 *) Type-checked OBJ_bsearch. Also some constification necessitated
440 by type-checking. Still to come: TXT_DB, bsearch(?),
441 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
445 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
446 seconds to a tm structure directly, instead of going through OS
447 specific date routines. This avoids any issues with OS routines such
448 as the year 2038 bug. New *_adj() functions for ASN1 time structures
449 and X509_time_adj_ex() to cover the extended range. The existing
450 X509_time_adj() is still usable and will no longer have any date issues.
453 *) Delta CRL support. New use deltas option which will attempt to locate
454 and search any appropriate delta CRLs available.
456 This work was sponsored by Google.
459 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
460 code and add additional score elements. Validate alternate CRL paths
461 as part of the CRL checking and indicate a new error "CRL path validation
462 error" in this case. Applications wanting additional details can use
463 the verify callback and check the new "parent" field. If this is not
464 NULL CRL path validation is taking place. Existing applications wont
465 see this because it requires extended CRL support which is off by
468 This work was sponsored by Google.
471 *) Support for freshest CRL extension.
473 This work was sponsored by Google.
476 *) Initial indirect CRL support. Currently only supported in the CRLs
477 passed directly and not via lookup. Process certificate issuer
478 CRL entry extension and lookup CRL entries by bother issuer name
479 and serial number. Check and process CRL issuer entry in IDP extension.
481 This work was sponsored by Google.
484 *) Add support for distinct certificate and CRL paths. The CRL issuer
485 certificate is validated separately in this case. Only enabled if
486 an extended CRL support flag is set: this flag will enable additional
487 CRL functionality in future.
489 This work was sponsored by Google.
492 *) Add support for policy mappings extension.
494 This work was sponsored by Google.
497 *) Fixes to pathlength constraint, self issued certificate handling,
498 policy processing to align with RFC3280 and PKITS tests.
500 This work was sponsored by Google.
503 *) Support for name constraints certificate extension. DN, email, DNS
504 and URI types are currently supported.
506 This work was sponsored by Google.
509 *) To cater for systems that provide a pointer-based thread ID rather
510 than numeric, deprecate the current numeric thread ID mechanism and
511 replace it with a structure and associated callback type. This
512 mechanism allows a numeric "hash" to be extracted from a thread ID in
513 either case, and on platforms where pointers are larger than 'long',
514 mixing is done to help ensure the numeric 'hash' is usable even if it
515 can't be guaranteed unique. The default mechanism is to use "&errno"
516 as a pointer-based thread ID to distinguish between threads.
518 Applications that want to provide their own thread IDs should now use
519 CRYPTO_THREADID_set_callback() to register a callback that will call
520 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
522 Note that ERR_remove_state() is now deprecated, because it is tied
523 to the assumption that thread IDs are numeric. ERR_remove_state(0)
524 to free the current thread's error state should be replaced by
525 ERR_remove_thread_state(NULL).
527 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
528 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
529 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
530 application was previously providing a numeric thread callback that
531 was inappropriate for distinguishing threads, then uniqueness might
532 have been obtained with &errno that happened immediately in the
533 intermediate development versions of OpenSSL; this is no longer the
534 case, the numeric thread callback will now override the automatic use
536 [Geoff Thorpe, with help from Bodo Moeller]
538 *) Initial support for different CRL issuing certificates. This covers a
539 simple case where the self issued certificates in the chain exist and
540 the real CRL issuer is higher in the existing chain.
542 This work was sponsored by Google.
545 *) Removed effectively defunct crypto/store from the build.
548 *) Revamp of STACK to provide stronger type-checking. Still to come:
549 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
550 ASN1_STRING, CONF_VALUE.
553 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
554 RAM on SSL connections. This option can save about 34k per idle SSL.
557 *) Revamp of LHASH to provide stronger type-checking. Still to come:
558 STACK, TXT_DB, bsearch, qsort.
561 *) Initial support for Cryptographic Message Syntax (aka CMS) based
562 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
563 support for data, signedData, compressedData, digestedData and
564 encryptedData, envelopedData types included. Scripts to check against
565 RFC4134 examples draft and interop and consistency checks of many
566 content types and variants.
569 *) Add options to enc utility to support use of zlib compression BIO.
572 *) Extend mk1mf to support importing of options and assembly language
573 files from Configure script, currently only included in VC-WIN32.
574 The assembly language rules can now optionally generate the source
575 files from the associated perl scripts.
578 *) Implement remaining functionality needed to support GOST ciphersuites.
579 Interop testing has been performed using CryptoPro implementations.
580 [Victor B. Wagner <vitus@cryptocom.ru>]
582 *) s390x assembler pack.
585 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
589 *) Implement Opaque PRF Input TLS extension as specified in
590 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
591 official specification yet and no extension type assignment by
592 IANA exists, this extension (for now) will have to be explicitly
593 enabled when building OpenSSL by providing the extension number
594 to use. For example, specify an option
596 -DTLSEXT_TYPE_opaque_prf_input=0x9527
598 to the "config" or "Configure" script to enable the extension,
599 assuming extension number 0x9527 (which is a completely arbitrary
600 and unofficial assignment based on the MD5 hash of the Internet
601 Draft). Note that by doing so, you potentially lose
602 interoperability with other TLS implementations since these might
603 be using the same extension number for other purposes.
605 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
606 opaque PRF input value to use in the handshake. This will create
607 an interal copy of the length-'len' string at 'src', and will
608 return non-zero for success.
610 To get more control and flexibility, provide a callback function
613 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
614 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
618 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
621 Callback function 'cb' will be called in handshakes, and is
622 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
623 Argument 'arg' is for application purposes (the value as given to
624 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
625 be provided to the callback function). The callback function
626 has to return non-zero to report success: usually 1 to use opaque
627 PRF input just if possible, or 2 to enforce use of the opaque PRF
628 input. In the latter case, the library will abort the handshake
629 if opaque PRF input is not successfully negotiated.
631 Arguments 'peerinput' and 'len' given to the callback function
632 will always be NULL and 0 in the case of a client. A server will
633 see the client's opaque PRF input through these variables if
634 available (NULL and 0 otherwise). Note that if the server
635 provides an opaque PRF input, the length must be the same as the
636 length of the client's opaque PRF input.
638 Note that the callback function will only be called when creating
639 a new session (session resumption can resume whatever was
640 previously negotiated), and will not be called in SSL 2.0
641 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
642 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
643 for applications that need to enforce opaque PRF input.
647 *) Update ssl code to support digests other than SHA1+MD5 for handshake
650 [Victor B. Wagner <vitus@cryptocom.ru>]
652 *) Add RFC4507 support to OpenSSL. This includes the corrections in
653 RFC4507bis. The encrypted ticket format is an encrypted encoded
654 SSL_SESSION structure, that way new session features are automatically
657 If a client application caches session in an SSL_SESSION structure
658 support is transparent because tickets are now stored in the encoded
661 The SSL_CTX structure automatically generates keys for ticket
662 protection in servers so again support should be possible
663 with no application modification.
665 If a client or server wishes to disable RFC4507 support then the option
666 SSL_OP_NO_TICKET can be set.
668 Add a TLS extension debugging callback to allow the contents of any client
669 or server extensions to be examined.
671 This work was sponsored by Google.
674 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
675 OpenSSL should now compile cleanly on gcc 4.2
676 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
678 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
679 support including streaming MAC support: this is required for GOST
681 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
683 *) Add option -stream to use PKCS#7 streaming in smime utility. New
684 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
685 to output in BER and PEM format.
688 *) Experimental support for use of HMAC via EVP_PKEY interface. This
689 allows HMAC to be handled via the EVP_DigestSign*() interface. The
690 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
691 ENGINE support for HMAC keys which are unextractable. New -mac and
692 -macopt options to dgst utility.
695 *) New option -sigopt to dgst utility. Update dgst to use
696 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
697 alternative signing paramaters such as X9.31 or PSS in the dgst
701 *) Change ssl_cipher_apply_rule(), the internal function that does
702 the work each time a ciphersuite string requests enabling
703 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
704 removing ("!foo+bar") a class of ciphersuites: Now it maintains
705 the order of disabled ciphersuites such that those ciphersuites
706 that most recently went from enabled to disabled not only stay
707 in order with respect to each other, but also have higher priority
708 than other disabled ciphersuites the next time ciphersuites are
711 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
712 the same ciphersuites as with "HIGH" alone, but in a specific
713 order where the PSK ciphersuites come first (since they are the
714 most recently disabled ciphersuites when "HIGH" is parsed).
716 Also, change ssl_create_cipher_list() (using this new
717 funcionality) such that between otherwise identical
718 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
722 *) Change ssl_create_cipher_list() so that it automatically
723 arranges the ciphersuites in reasonable order before starting
724 to process the rule string. Thus, the definition for "DEFAULT"
725 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
726 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
727 This makes it much easier to arrive at a reasonable default order
728 in applications for which anonymous ciphers are OK (meaning
729 that you can't actually use DEFAULT).
730 [Bodo Moeller; suggested by Victor Duchovni]
732 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
733 processing) into multiple integers instead of setting
734 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
735 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
736 (These masks as well as the individual bit definitions are hidden
737 away into the non-exported interface ssl/ssl_locl.h, so this
738 change to the definition of the SSL_CIPHER structure shouldn't
739 affect applications.) This give us more bits for each of these
740 categories, so there is no longer a need to coagulate AES128 and
741 AES256 into a single algorithm bit, and to coagulate Camellia128
742 and Camellia256 into a single algorithm bit, which has led to all
745 Thus, among other things, the kludge introduced in 0.9.7m and
746 0.9.8e for masking out AES256 independently of AES128 or masking
747 out Camellia256 independently of AES256 is not needed here in 0.9.9.
749 With the change, we also introduce new ciphersuite aliases that
750 so far were missing: "AES128", "AES256", "CAMELLIA128", and
754 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
755 Use the leftmost N bytes of the signature input if the input is
756 larger than the prime q (with N being the size in bytes of q).
759 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
760 it yet and it is largely untested.
763 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
766 *) Initial incomplete changes to avoid need for function casts in OpenSSL
767 some compilers (gcc 4.2 and later) reject their use. Safestack is
768 reimplemented. Update ASN1 to avoid use of legacy functions.
771 *) Win32/64 targets are linked with Winsock2.
774 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
775 to external functions. This can be used to increase CRL handling
776 efficiency especially when CRLs are very large by (for example) storing
777 the CRL revoked certificates in a database.
780 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
781 new CRLs added to a directory can be used. New command line option
782 -verify_return_error to s_client and s_server. This causes real errors
783 to be returned by the verify callback instead of carrying on no matter
784 what. This reflects the way a "real world" verify callback would behave.
787 *) GOST engine, supporting several GOST algorithms and public key formats.
788 Kindly donated by Cryptocom.
791 *) Partial support for Issuing Distribution Point CRL extension. CRLs
792 partitioned by DP are handled but no indirect CRL or reason partitioning
793 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
794 selected via a scoring technique which handles IDP and AKID in CRLs.
797 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
798 will ultimately be used for all verify operations: this will remove the
799 X509_STORE dependency on certificate verification and allow alternative
800 lookup methods. X509_STORE based implementations of these two callbacks.
803 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
804 Modify get_crl() to find a valid (unexpired) CRL if possible.
807 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
808 this would be called X509_CRL_cmp() but that name is already used by
809 a function that just compares CRL issuer names. Cache several CRL
810 extensions in X509_CRL structure and cache CRLDP in X509.
813 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
814 this maps equivalent X509_NAME structures into a consistent structure.
815 Name comparison can then be performed rapidly using memcmp().
818 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
822 *) Allow digests to supply their own micalg string for S/MIME type using
823 the ctrl EVP_MD_CTRL_MICALG.
826 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
827 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
828 ctrl. It can then customise the structure before and/or after signing
832 *) New function OBJ_add_sigid() to allow application defined signature OIDs
833 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
834 to free up any added signature OIDs.
837 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
838 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
839 digest and cipher tables. New options added to openssl utility:
840 list-message-digest-algorithms and list-cipher-algorithms.
843 *) Change the array representation of binary polynomials: the list
844 of degrees of non-zero coefficients is now terminated with -1.
845 Previously it was terminated with 0, which was also part of the
846 value; thus, the array representation was not applicable to
847 polynomials where t^0 has coefficient zero. This change makes
848 the array representation useful in a more general context.
851 *) Various modifications and fixes to SSL/TLS cipher string
852 handling. For ECC, the code now distinguishes between fixed ECDH
853 with RSA certificates on the one hand and with ECDSA certificates
854 on the other hand, since these are separate ciphersuites. The
855 unused code for Fortezza ciphersuites has been removed.
857 For consistency with EDH, ephemeral ECDH is now called "EECDH"
858 (not "ECDHE"). For consistency with the code for DH
859 certificates, use of ECDH certificates is now considered ECDH
860 authentication, not RSA or ECDSA authentication (the latter is
861 merely the CA's signing algorithm and not actively used in the
864 The temporary ciphersuite alias "ECCdraft" is no longer
865 available, and ECC ciphersuites are no longer excluded from "ALL"
866 and "DEFAULT". The following aliases now exist for RFC 4492
867 ciphersuites, most of these by analogy with the DH case:
869 kECDHr - ECDH cert, signed with RSA
870 kECDHe - ECDH cert, signed with ECDSA
871 kECDH - ECDH cert (signed with either RSA or ECDSA)
872 kEECDH - ephemeral ECDH
873 ECDH - ECDH cert or ephemeral ECDH
879 AECDH - anonymous ECDH
880 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
884 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
885 Use correct micalg parameters depending on digest(s) in signed message.
888 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
889 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
892 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
893 an engine to register a method. Add ENGINE lookups for methods and
894 functional reference processing.
897 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
898 EVP_{Sign,Verify}* which allow an application to customise the signature
902 *) New -resign option to smime utility. This adds one or more signers
903 to an existing PKCS#7 signedData structure. Also -md option to use an
904 alternative message digest algorithm for signing.
907 *) Tidy up PKCS#7 routines and add new functions to make it easier to
908 create PKCS7 structures containing multiple signers. Update smime
909 application to support multiple signers.
912 *) New -macalg option to pkcs12 utility to allow setting of an alternative
916 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
917 Reorganize PBE internals to lookup from a static table using NIDs,
918 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
919 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
920 PRF which will be automatically used with PBES2.
923 *) Replace the algorithm specific calls to generate keys in "req" with the
927 *) Update PKCS#7 enveloped data routines to use new API. This is now
928 supported by any public key method supporting the encrypt operation. A
929 ctrl is added to allow the public key algorithm to examine or modify
930 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
934 *) Add a ctrl to asn1 method to allow a public key algorithm to express
935 a default digest type to use. In most cases this will be SHA1 but some
936 algorithms (such as GOST) need to specify an alternative digest. The
937 return value indicates how strong the prefernce is 1 means optional and
938 2 is mandatory (that is it is the only supported type). Modify
939 ASN1_item_sign() to accept a NULL digest argument to indicate it should
940 use the default md. Update openssl utilities to use the default digest
941 type for signing if it is not explicitly indicated.
944 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
945 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
946 signing method from the key type. This effectively removes the link
947 between digests and public key types.
950 *) Add an OID cross reference table and utility functions. Its purpose is to
951 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
952 rsaEncryption. This will allow some of the algorithm specific hackery
953 needed to use the correct OID to be removed.
956 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
957 structures for PKCS7_sign(). They are now set up by the relevant public
961 *) Add provisional EC pkey method with support for ECDSA and ECDH.
964 *) Add support for key derivation (agreement) in the API, DH method and
968 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
969 public and private key formats. As a side effect these add additional
970 command line functionality not previously available: DSA signatures can be
971 generated and verified using pkeyutl and DH key support and generation in
976 [Oliver Tappe <zooey@hirschkaefer.de>]
978 *) New make target "install_html_docs" installs HTML renditions of the
980 [Oliver Tappe <zooey@hirschkaefer.de>]
982 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
983 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
984 support key and parameter generation and add initial key generation
985 functionality for RSA.
988 *) Add functions for main EVP_PKEY_method operations. The undocumented
989 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
990 EVP_PKEY_{encrypt,decrypt}_old.
993 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
994 key API, doesn't do much yet.
997 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
998 public key algorithms. New option to openssl utility:
999 "list-public-key-algorithms" to print out info.
1002 *) Implement the Supported Elliptic Curves Extension for
1003 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1006 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1007 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1010 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1011 utilities such as rsa, dsa, dsaparam etc except they process any key
1015 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1016 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1017 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1021 *) Initial support for pluggable public key ASN1.
1022 De-spaghettify the public key ASN1 handling. Move public and private
1023 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1024 algorithm specific handling to a single module within the relevant
1025 algorithm directory. Add functions to allow (near) opaque processing
1026 of public and private key structures.
1029 *) Implement the Supported Point Formats Extension for
1030 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1033 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1034 for the psk identity [hint] and the psk callback functions to the
1035 SSL_SESSION, SSL and SSL_CTX structure.
1038 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1042 SSL_CTX_use_psk_identity_hint
1043 SSL_get_psk_identity_hint
1044 SSL_get_psk_identity
1045 SSL_use_psk_identity_hint
1047 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1049 *) Add RFC 3161 compliant time stamp request creation, response generation
1050 and response verification functionality.
1051 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1053 *) Add initial support for TLS extensions, specifically for the server_name
1054 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1055 have new members for a host name. The SSL data structure has an
1056 additional member SSL_CTX *initial_ctx so that new sessions can be
1057 stored in that context to allow for session resumption, even after the
1058 SSL has been switched to a new SSL_CTX in reaction to a client's
1059 server_name extension.
1061 New functions (subject to change):
1063 SSL_get_servername()
1064 SSL_get_servername_type()
1067 New CTRL codes and macros (subject to change):
1069 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1070 - SSL_CTX_set_tlsext_servername_callback()
1071 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1072 - SSL_CTX_set_tlsext_servername_arg()
1073 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1075 openssl s_client has a new '-servername ...' option.
1077 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1078 '-key2 ...', '-servername_fatal' (subject to change). This allows
1079 testing the HostName extension for a specific single host name ('-cert'
1080 and '-key' remain fallbacks for handshakes without HostName
1081 negotiation). If the unrecogninzed_name alert has to be sent, this by
1082 default is a warning; it becomes fatal with the '-servername_fatal'
1085 [Peter Sylvester, Remy Allais, Christophe Renou]
1087 *) Whirlpool hash implementation is added.
1090 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1091 bn(64,32). Because of instruction set limitations it doesn't have
1092 any negative impact on performance. This was done mostly in order
1093 to make it possible to share assembler modules, such as bn_mul_mont
1094 implementations, between 32- and 64-bit builds without hassle.
1097 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1098 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1102 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1103 dedicated Montgomery multiplication procedure, is introduced.
1104 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1105 "64-bit" performance on certain 32-bit targets.
1108 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1109 in SSL structures. New SSL ctrl to set maximum send fragment size.
1110 Save memory by seeting the I/O buffer sizes dynamically instead of
1111 using the maximum available value.
1114 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1115 in addition to the text details.
1118 *) Very, very preliminary EXPERIMENTAL support for printing of general
1119 ASN1 structures. This currently produces rather ugly output and doesn't
1120 handle several customised structures at all.
1123 *) Integrated support for PVK file format and some related formats such
1124 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1125 these in the 'rsa' and 'dsa' utilities.
1128 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1131 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1132 place for the (very old) "NETSCAPE" format certificates which are now
1133 handled using new ASN1 code equivalents.
1136 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1137 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1138 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1141 *) Modify CRL distribution points extension code to print out previously
1142 unsupported fields. Enhance extension setting code to allow setting of
1146 *) Add print and set support for Issuing Distribution Point CRL extension.
1149 *) Change 'Configure' script to enable Camellia by default.
1152 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1154 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1155 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1157 *) Fix bug in string printing code: if *any* escaping is enabled we must
1158 escape the escape character (backslash) or the resulting string is
1162 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1164 *) Disable code workaround for ancient and obsolete Netscape browsers
1165 and servers: an attacker can use it in a ciphersuite downgrade attack.
1166 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1169 *) Fixed J-PAKE implementation error, originally discovered by
1170 Sebastien Martini, further info and confirmation from Stefan
1171 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1174 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1176 *) Fix extension code to avoid race conditions which can result in a buffer
1177 overrun vulnerability: resumed sessions must not be modified as they can
1178 be shared by multiple threads. CVE-2010-3864
1181 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1184 *) Don't reencode certificate when calculating signature: cache and use
1185 the original encoding instead. This makes signature verification of
1186 some broken encodings work correctly.
1189 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1190 is also one of the inputs.
1191 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1193 *) Don't repeatedly append PBE algorithms to table if they already exist.
1194 Sort table on each new add. This effectively makes the table read only
1195 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1199 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1201 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1204 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1205 access or freeing data twice (CVE-2010-0742)
1206 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1208 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1209 common in certificates and some applications which only call
1210 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1214 Reduce copying into .apps and .test in makevms.com
1215 Don't try to use blank CA certificate in CA.com
1216 Allow use of C files from original directories in maketests.com
1217 [Steven M. Schweda" <sms@antinode.info>]
1219 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1221 *) When rejecting SSL/TLS records due to an incorrect version number, never
1222 update s->server with a new major version number. As of
1223 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1224 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1225 the previous behavior could result in a read attempt at NULL when
1226 receiving specific incorrect SSL/TLS records once record payload
1227 protection is active. (CVE-2010-0740)
1228 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1230 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1231 could be crashed if the relevant tables were not present (e.g. chrooted).
1232 [Tomas Hoger <thoger@redhat.com>]
1234 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1236 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1237 [Martin Olsson, Neel Mehta]
1239 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1240 accommodate for stack sorting, always a write lock!).
1243 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1244 excessive delays in the RAND_poll(): over a minute. As a workaround
1245 include a time check in the inner Heap32Next loop too.
1248 *) The code that handled flushing of data in SSL/TLS originally used the
1249 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1250 the problem outlined in PR#1949. The fix suggested there however can
1251 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1252 of Apache). So instead simplify the code to flush unconditionally.
1253 This should be fine since flushing with no data to flush is a no op.
1256 *) Handle TLS versions 2.0 and later properly and correctly use the
1257 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1258 off ancient servers have a habit of sticking around for a while...
1261 *) Modify compression code so it frees up structures without using the
1262 ex_data callbacks. This works around a problem where some applications
1263 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1264 restarting) then use compression (e.g. SSL with compression) later.
1265 This results in significant per-connection memory leaks and
1266 has caused some security issues including CVE-2008-1678 and
1270 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1271 change when encrypting or decrypting.
1274 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1275 connect and renegotiate with servers which do not support RI.
1276 Until RI is more widely deployed this option is enabled by default.
1279 *) Add "missing" ssl ctrls to clear options and mode.
1282 *) If client attempts to renegotiate and doesn't support RI respond with
1283 a no_renegotiation alert as required by RFC5746. Some renegotiating
1284 TLS clients will continue a connection gracefully when they receive
1285 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1286 waiting for a server hello which it will never receive. Now we treat a
1287 received no_renegotiation alert as a fatal error. This is because
1288 applications requesting a renegotiation might well expect it to succeed
1289 and would have no code in place to handle the server denying it so the
1290 only safe thing to do is to terminate the connection.
1293 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1294 peer supports secure renegotiation and 0 otherwise. Print out peer
1295 renegotiation support in s_client/s_server.
1298 *) Replace the highly broken and deprecated SPKAC certification method with
1299 the updated NID creation version. This should correctly handle UTF8.
1302 *) Implement RFC5746. Re-enable renegotiation but require the extension
1303 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1304 turns out to be a bad idea. It has been replaced by
1305 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1306 SSL_CTX_set_options(). This is really not recommended unless you
1307 know what you are doing.
1308 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1310 *) Fixes to stateless session resumption handling. Use initial_ctx when
1311 issuing and attempting to decrypt tickets in case it has changed during
1312 servername handling. Use a non-zero length session ID when attempting
1313 stateless session resumption: this makes it possible to determine if
1314 a resumption has occurred immediately after receiving server hello
1315 (several places in OpenSSL subtly assume this) instead of later in
1319 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1320 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1321 fixes for a few places where the return code is not checked
1323 [Julia Lawall <julia@diku.dk>]
1325 *) Add --strict-warnings option to Configure script to include devteam
1326 warnings in other configurations.
1329 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1330 makes it possible to install openssl libraries in locations which
1331 have names other than "lib", for example "/usr/lib64" which some
1333 [Steve Henson, based on patch from Jeremy Utley]
1335 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1336 X690 8.9.12 and can produce some misleading textual output of OIDs.
1337 [Steve Henson, reported by Dan Kaminsky]
1339 *) Delete MD2 from algorithm tables. This follows the recommendation in
1340 several standards that it is not used in new applications due to
1341 several cryptographic weaknesses. For binary compatibility reasons
1342 the MD2 API is still compiled in by default.
1345 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1349 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1350 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1352 [Guenter <lists@gknw.net>]
1354 *) Fix the server certificate chain building code to use X509_verify_cert(),
1355 it used to have an ad-hoc builder which was unable to cope with anything
1356 other than a simple chain.
1357 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1359 *) Don't check self signed certificate signatures in X509_verify_cert()
1360 by default (a flag can override this): it just wastes time without
1361 adding any security. As a useful side effect self signed root CAs
1362 with non-FIPS digests are now usable in FIPS mode.
1365 *) In dtls1_process_out_of_seq_message() the check if the current message
1366 is already buffered was missing. For every new message was memory
1367 allocated, allowing an attacker to perform an denial of service attack
1368 with sending out of seq handshake messages until there is no memory
1369 left. Additionally every future messege was buffered, even if the
1370 sequence number made no sense and would be part of another handshake.
1371 So only messages with sequence numbers less than 10 in advance will be
1372 buffered. (CVE-2009-1378)
1373 [Robin Seggelmann, discovered by Daniel Mentz]
1375 *) Records are buffered if they arrive with a future epoch to be
1376 processed after finishing the corresponding handshake. There is
1377 currently no limitation to this buffer allowing an attacker to perform
1378 a DOS attack with sending records with future epochs until there is no
1379 memory left. This patch adds the pqueue_size() function to detemine
1380 the size of a buffer and limits the record buffer to 100 entries.
1382 [Robin Seggelmann, discovered by Daniel Mentz]
1384 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1385 parent structure is freed. (CVE-2009-1379)
1388 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1389 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1392 [Ilya O. <vrghost@gmail.com>]
1394 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1396 *) Disable renegotiation completely - this fixes a severe security
1397 problem (CVE-2009-3555) at the cost of breaking all
1398 renegotiation. Renegotiation can be re-enabled by setting
1399 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1400 run-time. This is really not recommended unless you know what
1404 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1406 *) Don't set val to NULL when freeing up structures, it is freed up by
1407 underlying code. If sizeof(void *) > sizeof(long) this can result in
1408 zeroing past the valid field. (CVE-2009-0789)
1409 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1411 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1412 checked correctly. This would allow some invalid signed attributes to
1413 appear to verify correctly. (CVE-2009-0591)
1414 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1416 *) Reject UniversalString and BMPString types with invalid lengths. This
1417 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1418 a legal length. (CVE-2009-0590)
1421 *) Set S/MIME signing as the default purpose rather than setting it
1422 unconditionally. This allows applications to override it at the store
1426 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1427 to handle some structures.
1430 *) Improve efficiency of mem_gets: don't search whole buffer each time
1432 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1434 *) New -hex option for openssl rand.
1437 *) Print out UTF8String and NumericString when parsing ASN1.
1440 *) Support NumericString type for name components.
1443 *) Allow CC in the environment to override the automatically chosen
1444 compiler. Note that nothing is done to ensure flags work with the
1448 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1450 *) Properly check EVP_VerifyFinal() and similar return values
1452 [Ben Laurie, Bodo Moeller, Google Security Team]
1454 *) Enable TLS extensions by default.
1457 *) Allow the CHIL engine to be loaded, whether the application is
1458 multithreaded or not. (This does not release the developer from the
1459 obligation to set up the dynamic locking callbacks.)
1460 [Sander Temme <sander@temme.net>]
1462 *) Use correct exit code if there is an error in dgst command.
1463 [Steve Henson; problem pointed out by Roland Dirlewanger]
1465 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1466 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1469 *) Add experimental JPAKE support, including demo authentication in
1470 s_client and s_server.
1473 *) Set the comparison function in v3_addr_canonize().
1474 [Rob Austein <sra@hactrn.net>]
1476 *) Add support for XMPP STARTTLS in s_client.
1477 [Philip Paeps <philip@freebsd.org>]
1479 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1480 to ensure that even with this option, only ciphersuites in the
1481 server's preference list will be accepted. (Note that the option
1482 applies only when resuming a session, so the earlier behavior was
1483 just about the algorithm choice for symmetric cryptography.)
1486 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1488 *) Fix NULL pointer dereference if a DTLS server received
1489 ChangeCipherSpec as first record (CVE-2009-1386).
1492 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1493 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1496 *) The fix in 0.9.8c that supposedly got rid of unsafe
1497 double-checked locking was incomplete for RSA blinding,
1498 addressing just one layer of what turns out to have been
1499 doubly unsafe triple-checked locking.
1501 So now fix this for real by retiring the MONT_HELPER macro
1502 in crypto/rsa/rsa_eay.c.
1504 [Bodo Moeller; problem pointed out by Marius Schilder]
1506 *) Various precautionary measures:
1508 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1510 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1511 (NB: This would require knowledge of the secret session ticket key
1512 to exploit, in which case you'd be SOL either way.)
1514 - Change bn_nist.c so that it will properly handle input BIGNUMs
1515 outside the expected range.
1517 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1520 [Neel Mehta, Bodo Moeller]
1522 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1523 the load fails. Useful for distros.
1524 [Ben Laurie and the FreeBSD team]
1526 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1529 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1532 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1534 This work was sponsored by Logica.
1537 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1538 keystores. Support for SSL/TLS client authentication too.
1539 Not compiled unless enable-capieng specified to Configure.
1541 This work was sponsored by Logica.
1544 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1545 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1546 attribute creation routines such as certifcate requests and PKCS#12
1550 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1552 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1553 handshake which could lead to a cilent crash as found using the
1554 Codenomicon TLS test suite (CVE-2008-1672)
1555 [Steve Henson, Mark Cox]
1557 *) Fix double free in TLS server name extensions which could lead to
1558 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1561 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1563 Clear the error queue to ensure that error entries left from
1564 older function calls do not interfere with the correct operation.
1565 [Lutz Jaenicke, Erik de Castro Lopo]
1567 *) Remove root CA certificates of commercial CAs:
1569 The OpenSSL project does not recommend any specific CA and does not
1570 have any policy with respect to including or excluding any CA.
1571 Therefore it does not make any sense to ship an arbitrary selection
1572 of root CA certificates with the OpenSSL software.
1575 *) RSA OAEP patches to fix two separate invalid memory reads.
1576 The first one involves inputs when 'lzero' is greater than
1577 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1578 before the beginning of from). The second one involves inputs where
1579 the 'db' section contains nothing but zeroes (there is a one-byte
1580 invalid read after the end of 'db').
1581 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1583 *) Partial backport from 0.9.9-dev:
1585 Introduce bn_mul_mont (dedicated Montgomery multiplication
1586 procedure) as a candidate for BIGNUM assembler implementation.
1587 While 0.9.9-dev uses assembler for various architectures, only
1588 x86_64 is available by default here in the 0.9.8 branch, and
1589 32-bit x86 is available through a compile-time setting.
1591 To try the 32-bit x86 assembler implementation, use Configure
1592 option "enable-montasm" (which exists only for this backport).
1594 As "enable-montasm" for 32-bit x86 disclaims code stability
1595 anyway, in this constellation we activate additional code
1596 backported from 0.9.9-dev for further performance improvements,
1597 namely BN_from_montgomery_word. (To enable this otherwise,
1598 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1600 [Andy Polyakov (backport partially by Bodo Moeller)]
1602 *) Add TLS session ticket callback. This allows an application to set
1603 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1604 values. This is useful for key rollover for example where several key
1605 sets may exist with different names.
1608 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1609 This was broken until now in 0.9.8 releases, such that the only way
1610 a registered ENGINE could be used (assuming it initialises
1611 successfully on the host) was to explicitly set it as the default
1612 for the relevant algorithms. This is in contradiction with 0.9.7
1613 behaviour and the documentation. With this fix, when an ENGINE is
1614 registered into a given algorithm's table of implementations, the
1615 'uptodate' flag is reset so that auto-discovery will be used next
1616 time a new context for that algorithm attempts to select an
1618 [Ian Lister (tweaked by Geoff Thorpe)]
1620 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1621 implemention in the following ways:
1623 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1626 Lack of BER streaming support means one pass streaming processing is
1627 only supported if data is detached: setting the streaming flag is
1628 ignored for embedded content.
1630 CMS support is disabled by default and must be explicitly enabled
1631 with the enable-cms configuration option.
1634 *) Update the GMP engine glue to do direct copies between BIGNUM and
1635 mpz_t when openssl and GMP use the same limb size. Otherwise the
1636 existing "conversion via a text string export" trick is still used.
1637 [Paul Sheer <paulsheer@gmail.com>]
1639 *) Zlib compression BIO. This is a filter BIO which compressed and
1640 uncompresses any data passed through it.
1643 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1644 RFC3394 compatible AES key wrapping.
1647 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1648 sets string data without copying. X509_ALGOR_set0() and
1649 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1650 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1651 from an X509_ATTRIBUTE structure optionally checking it occurs only
1652 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1656 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1657 to get the expected BN_FLG_CONSTTIME behavior.
1658 [Bodo Moeller (Google)]
1662 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1663 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1664 - added some more tests to do_tests.pl
1665 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1666 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1667 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1668 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1669 - various changes to netware.pl to enable gcc-cross builds on Win32
1671 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1672 - various changes to fix missing prototype warnings
1673 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1674 - added AES, WHIRLPOOL and CPUID assembler code to build files
1675 - added missing AES assembler make rules to mk1mf.pl
1676 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1677 [Guenter Knauf <eflash@gmx.net>]
1679 *) Implement certificate status request TLS extension defined in RFC3546.
1680 A client can set the appropriate parameters and receive the encoded
1681 OCSP response via a callback. A server can query the supplied parameters
1682 and set the encoded OCSP response in the callback. Add simplified examples
1683 to s_client and s_server.
1686 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1688 *) Fix various bugs:
1689 + Binary incompatibility of ssl_ctx_st structure
1690 + DTLS interoperation with non-compliant servers
1691 + Don't call get_session_cb() without proposed session
1692 + Fix ia64 assembler code
1693 [Andy Polyakov, Steve Henson]
1695 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1697 *) DTLS Handshake overhaul. There were longstanding issues with
1698 OpenSSL DTLS implementation, which were making it impossible for
1699 RFC 4347 compliant client to communicate with OpenSSL server.
1700 Unfortunately just fixing these incompatibilities would "cut off"
1701 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1702 server keeps tolerating non RFC compliant syntax. The opposite is
1703 not true, 0.9.8f client can not communicate with earlier server.
1704 This update even addresses CVE-2007-4995.
1707 *) Changes to avoid need for function casts in OpenSSL: some compilers
1708 (gcc 4.2 and later) reject their use.
1709 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1712 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1713 RFC4507bis. The encrypted ticket format is an encrypted encoded
1714 SSL_SESSION structure, that way new session features are automatically
1717 If a client application caches session in an SSL_SESSION structure
1718 support is transparent because tickets are now stored in the encoded
1721 The SSL_CTX structure automatically generates keys for ticket
1722 protection in servers so again support should be possible
1723 with no application modification.
1725 If a client or server wishes to disable RFC4507 support then the option
1726 SSL_OP_NO_TICKET can be set.
1728 Add a TLS extension debugging callback to allow the contents of any client
1729 or server extensions to be examined.
1731 This work was sponsored by Google.
1734 *) Add initial support for TLS extensions, specifically for the server_name
1735 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1736 have new members for a host name. The SSL data structure has an
1737 additional member SSL_CTX *initial_ctx so that new sessions can be
1738 stored in that context to allow for session resumption, even after the
1739 SSL has been switched to a new SSL_CTX in reaction to a client's
1740 server_name extension.
1742 New functions (subject to change):
1744 SSL_get_servername()
1745 SSL_get_servername_type()
1748 New CTRL codes and macros (subject to change):
1750 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1751 - SSL_CTX_set_tlsext_servername_callback()
1752 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1753 - SSL_CTX_set_tlsext_servername_arg()
1754 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1756 openssl s_client has a new '-servername ...' option.
1758 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1759 '-key2 ...', '-servername_fatal' (subject to change). This allows
1760 testing the HostName extension for a specific single host name ('-cert'
1761 and '-key' remain fallbacks for handshakes without HostName
1762 negotiation). If the unrecogninzed_name alert has to be sent, this by
1763 default is a warning; it becomes fatal with the '-servername_fatal'
1766 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1768 *) Add AES and SSE2 assembly language support to VC++ build.
1771 *) Mitigate attack on final subtraction in Montgomery reduction.
1774 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1775 (which previously caused an internal error).
1778 *) Squeeze another 10% out of IGE mode when in != out.
1781 *) AES IGE mode speedup.
1782 [Dean Gaudet (Google)]
1784 *) Add the Korean symmetric 128-bit cipher SEED (see
1785 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1786 add SEED ciphersuites from RFC 4162:
1788 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1789 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1790 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1791 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1793 To minimize changes between patchlevels in the OpenSSL 0.9.8
1794 series, SEED remains excluded from compilation unless OpenSSL
1795 is configured with 'enable-seed'.
1796 [KISA, Bodo Moeller]
1798 *) Mitigate branch prediction attacks, which can be practical if a
1799 single processor is shared, allowing a spy process to extract
1800 information. For detailed background information, see
1801 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1802 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1803 and Necessary Software Countermeasures"). The core of the change
1804 are new versions BN_div_no_branch() and
1805 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1806 respectively, which are slower, but avoid the security-relevant
1807 conditional branches. These are automatically called by BN_div()
1808 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1809 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1810 remove a conditional branch.
1812 BN_FLG_CONSTTIME is the new name for the previous
1813 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1814 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1815 in the exponent causes BN_mod_exp_mont() to use the alternative
1816 implementation in BN_mod_exp_mont_consttime().) The old name
1817 remains as a deprecated alias.
1819 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1820 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1821 constant-time implementations for more than just exponentiation.
1822 Here too the old name is kept as a deprecated alias.
1824 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1825 the BN_BLINDING structure gets an independent copy of the
1826 modulus. This means that the previous "BIGNUM *m" argument to
1827 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1828 essentially becomes "const BIGNUM *m", although we can't actually
1829 change this in the header file before 0.9.9. It allows
1830 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1831 enable BN_FLG_CONSTTIME.
1833 [Matthew D Wood (Intel Corp)]
1835 *) In the SSL/TLS server implementation, be strict about session ID
1836 context matching (which matters if an application uses a single
1837 external cache for different purposes). Previously,
1838 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1839 set. This did ensure strict client verification, but meant that,
1840 with applications using a single external cache for quite
1841 different requirements, clients could circumvent ciphersuite
1842 restrictions for a given session ID context by starting a session
1843 in a different context.
1846 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1847 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1848 authentication-only ciphersuites.
1851 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1852 not complete and could lead to a possible single byte overflow
1853 (CVE-2007-5135) [Ben Laurie]
1855 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1857 *) Since AES128 and AES256 (and similarly Camellia128 and
1858 Camellia256) share a single mask bit in the logic of
1859 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1860 kludge to work properly if AES128 is available and AES256 isn't
1861 (or if Camellia128 is available and Camellia256 isn't).
1864 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1865 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1866 When a point or a seed is encoded in a BIT STRING, we need to
1867 prevent the removal of trailing zero bits to get the proper DER
1868 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1869 of a NamedBitList, for which trailing 0 bits need to be removed.)
1872 *) Have SSL/TLS server implementation tolerate "mismatched" record
1873 protocol version while receiving ClientHello even if the
1874 ClientHello is fragmented. (The server can't insist on the
1875 particular protocol version it has chosen before the ServerHello
1876 message has informed the client about his choice.)
1879 *) Add RFC 3779 support.
1880 [Rob Austein for ARIN, Ben Laurie]
1882 *) Load error codes if they are not already present instead of using a
1883 static variable. This allows them to be cleanly unloaded and reloaded.
1884 Improve header file function name parsing.
1887 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1888 or CAPABILITY handshake as required by RFCs.
1891 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1893 *) Introduce limits to prevent malicious keys being able to
1894 cause a denial of service. (CVE-2006-2940)
1895 [Steve Henson, Bodo Moeller]
1897 *) Fix ASN.1 parsing of certain invalid structures that can result
1898 in a denial of service. (CVE-2006-2937) [Steve Henson]
1900 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1901 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1903 *) Fix SSL client code which could crash if connecting to a
1904 malicious SSLv2 server. (CVE-2006-4343)
1905 [Tavis Ormandy and Will Drewry, Google Security Team]
1907 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1908 match only those. Before that, "AES256-SHA" would be interpreted
1909 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1910 the same strength classification in 0.9.7h) as we currently only
1911 have a single AES bit in the ciphersuite description bitmap.
1912 That change, however, also applied to ciphersuite strings such as
1913 "RC4-MD5" that intentionally matched multiple ciphersuites --
1914 namely, SSL 2.0 ciphersuites in addition to the more common ones
1915 from SSL 3.0/TLS 1.0.
1917 So we change the selection algorithm again: Naming an explicit
1918 ciphersuite selects this one ciphersuite, and any other similar
1919 ciphersuite (same bitmap) from *other* protocol versions.
1920 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1921 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1923 Since SSL 2.0 does not have any ciphersuites for which the
1924 128/256 bit distinction would be relevant, this works for now.
1925 The proper fix will be to use different bits for AES128 and
1926 AES256, which would have avoided the problems from the beginning;
1927 however, bits are scarce, so we can only do this in a new release
1928 (not just a patchlevel) when we can change the SSL_CIPHER
1929 definition to split the single 'unsigned long mask' bitmap into
1930 multiple values to extend the available space.
1934 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1936 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1937 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1939 *) Add AES IGE and biIGE modes.
1942 *) Change the Unix randomness entropy gathering to use poll() when
1943 possible instead of select(), since the latter has some
1944 undesirable limitations.
1945 [Darryl Miles via Richard Levitte and Bodo Moeller]
1947 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
1948 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
1949 cannot be implicitly activated as part of, e.g., the "AES" alias.
1950 However, please upgrade to OpenSSL 0.9.9[-dev] for
1951 non-experimental use of the ECC ciphersuites to get TLS extension
1952 support, which is required for curve and point format negotiation
1953 to avoid potential handshake problems.
1956 *) Disable rogue ciphersuites:
1958 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1959 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1960 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1962 The latter two were purportedly from
1963 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1966 Also deactivate the remaining ciphersuites from
1967 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1968 unofficial, and the ID has long expired.
1971 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1972 dual-core machines) and other potential thread-safety issues.
1975 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
1976 versions), which is now available for royalty-free use
1977 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
1978 Also, add Camellia TLS ciphersuites from RFC 4132.
1980 To minimize changes between patchlevels in the OpenSSL 0.9.8
1981 series, Camellia remains excluded from compilation unless OpenSSL
1982 is configured with 'enable-camellia'.
1985 *) Disable the padding bug check when compression is in use. The padding
1986 bug check assumes the first packet is of even length, this is not
1987 necessarily true if compresssion is enabled and can result in false
1988 positives causing handshake failure. The actual bug test is ancient
1989 code so it is hoped that implementations will either have fixed it by
1990 now or any which still have the bug do not support compression.
1993 Changes between 0.9.8a and 0.9.8b [04 May 2006]
1995 *) When applying a cipher rule check to see if string match is an explicit
1996 cipher suite and only match that one cipher suite if it is.
1999 *) Link in manifests for VC++ if needed.
2000 [Austin Ziegler <halostatue@gmail.com>]
2002 *) Update support for ECC-based TLS ciphersuites according to
2003 draft-ietf-tls-ecc-12.txt with proposed changes (but without
2004 TLS extensions, which are supported starting with the 0.9.9
2005 branch, not in the OpenSSL 0.9.8 branch).
2008 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
2009 opaque EVP_CIPHER_CTX handling.
2012 *) Fixes and enhancements to zlib compression code. We now only use
2013 "zlib1.dll" and use the default __cdecl calling convention on Win32
2014 to conform with the standards mentioned here:
2015 http://www.zlib.net/DLL_FAQ.txt
2016 Static zlib linking now works on Windows and the new --with-zlib-include
2017 --with-zlib-lib options to Configure can be used to supply the location
2018 of the headers and library. Gracefully handle case where zlib library
2022 *) Several fixes and enhancements to the OID generation code. The old code
2023 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
2024 handle numbers larger than ULONG_MAX, truncated printing and had a
2025 non standard OBJ_obj2txt() behaviour.
2028 *) Add support for building of engines under engine/ as shared libraries
2029 under VC++ build system.
2032 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
2033 Hopefully, we will not see any false combination of paths any more.
2036 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
2038 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2039 (part of SSL_OP_ALL). This option used to disable the
2040 countermeasure against man-in-the-middle protocol-version
2041 rollback in the SSL 2.0 server implementation, which is a bad
2042 idea. (CVE-2005-2969)
2044 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2045 for Information Security, National Institute of Advanced Industrial
2046 Science and Technology [AIST], Japan)]
2048 *) Add two function to clear and return the verify parameter flags.
2051 *) Keep cipherlists sorted in the source instead of sorting them at
2052 runtime, thus removing the need for a lock.
2055 *) Avoid some small subgroup attacks in Diffie-Hellman.
2056 [Nick Mathewson and Ben Laurie]
2058 *) Add functions for well-known primes.
2061 *) Extended Windows CE support.
2062 [Satoshi Nakamura and Andy Polyakov]
2064 *) Initialize SSL_METHOD structures at compile time instead of during
2065 runtime, thus removing the need for a lock.
2068 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2069 attempting to decrypt each encrypted key in turn. Add support to
2073 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2075 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2078 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2081 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2082 key into the same file any more.
2085 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2088 *) Add -utf8 command line and config file option to 'ca'.
2089 [Stefan <stf@udoma.org]
2091 *) Removed the macro des_crypt(), as it seems to conflict with some
2092 libraries. Use DES_crypt().
2095 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2096 involves renaming the source and generated shared-libs for
2097 both. The engines will accept the corrected or legacy ids
2098 ('ncipher' and '4758_cca' respectively) when binding. NB,
2099 this only applies when building 'shared'.
2100 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2102 *) Add attribute functions to EVP_PKEY structure. Modify
2103 PKCS12_create() to recognize a CSP name attribute and
2104 use it. Make -CSP option work again in pkcs12 utility.
2107 *) Add new functionality to the bn blinding code:
2108 - automatic re-creation of the BN_BLINDING parameters after
2109 a fixed number of uses (currently 32)
2110 - add new function for parameter creation
2111 - introduce flags to control the update behaviour of the
2112 BN_BLINDING parameters
2113 - hide BN_BLINDING structure
2114 Add a second BN_BLINDING slot to the RSA structure to improve
2115 performance when a single RSA object is shared among several
2119 *) Add support for DTLS.
2120 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2122 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2123 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2126 *) Remove buggy and incompletet DH cert support from
2127 ssl/ssl_rsa.c and ssl/s3_both.c
2130 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2131 the apps/openssl applications.
2134 *) Compile clean with "-Wall -Wmissing-prototypes
2135 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2136 DEBUG_SAFESTACK must also be set.
2139 *) Change ./Configure so that certain algorithms can be disabled by default.
2140 The new counterpiece to "no-xxx" is "enable-xxx".
2142 The patented RC5 and MDC2 algorithms will now be disabled unless
2143 "enable-rc5" and "enable-mdc2", respectively, are specified.
2145 (IDEA remains enabled despite being patented. This is because IDEA
2146 is frequently required for interoperability, and there is no license
2147 fee for non-commercial use. As before, "no-idea" can be used to
2148 avoid this algorithm.)
2152 *) Add processing of proxy certificates (see RFC 3820). This work was
2153 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2154 EGEE (Enabling Grids for E-science in Europe).
2157 *) RC4 performance overhaul on modern architectures/implementations, such
2158 as Intel P4, IA-64 and AMD64.
2161 *) New utility extract-section.pl. This can be used specify an alternative
2162 section number in a pod file instead of having to treat each file as
2163 a separate case in Makefile. This can be done by adding two lines to the
2166 =for comment openssl_section:XXX
2168 The blank line is mandatory.
2172 *) New arguments -certform, -keyform and -pass for s_client and s_server
2173 to allow alternative format key and certificate files and passphrase
2177 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2178 update associated structures and add various utility functions.
2180 Add new policy related verify parameters, include policy checking in
2181 standard verify code. Enhance 'smime' application with extra parameters
2182 to support policy checking and print out.
2185 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2186 Nehemiah processors. These extensions support AES encryption in hardware
2187 as well as RNG (though RNG support is currently disabled).
2188 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2190 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2193 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2194 [Andy Polyakov and a number of other people]
2196 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2197 implementation contributed by IBM.
2198 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2200 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2201 exponent rather than 'unsigned long'. There is a corresponding change to
2202 the new 'rsa_keygen' element of the RSA_METHOD structure.
2203 [Jelte Jansen, Geoff Thorpe]
2205 *) Functionality for creating the initial serial number file is now
2206 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2208 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2209 number file to 1, which is bound to cause problems. To avoid
2210 the problems while respecting compatibility between different 0.9.7
2211 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2212 CA.pl for serial number initialization. With the new release 0.9.8,
2213 we can fix the problem directly in the 'ca' utility.)
2216 *) Reduced header interdepencies by declaring more opaque objects in
2217 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2218 give fewer recursive includes, which could break lazy source code - so
2219 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2220 developers should define this symbol when building and using openssl to
2221 ensure they track the recommended behaviour, interfaces, [etc], but
2222 backwards-compatible behaviour prevails when this isn't defined.
2225 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2228 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2229 This will generate a random key of the appropriate length based on the
2230 cipher context. The EVP_CIPHER can provide its own random key generation
2231 routine to support keys of a specific form. This is used in the des and
2232 3des routines to generate a key of the correct parity. Update S/MIME
2233 code to use new functions and hence generate correct parity DES keys.
2234 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2235 valid (weak or incorrect parity).
2238 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2239 as looking them up. This is useful when the verified structure may contain
2240 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2241 present unless the new PKCS7_NO_CRL flag is asserted.
2244 *) Extend ASN1 oid configuration module. It now additionally accepts the
2247 shortName = some long name, 1.2.3.4
2250 *) Reimplemented the BN_CTX implementation. There is now no more static
2251 limitation on the number of variables it can handle nor the depth of the
2252 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2253 information can now expand as required, and rather than having a single
2254 static array of bignums, BN_CTX now uses a linked-list of such arrays
2255 allowing it to expand on demand whilst maintaining the usefulness of
2256 BN_CTX's "bundling".
2259 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2260 to allow all RSA operations to function using a single BN_CTX.
2263 *) Preliminary support for certificate policy evaluation and checking. This
2264 is initially intended to pass the tests outlined in "Conformance Testing
2265 of Relying Party Client Certificate Path Processing Logic" v1.07.
2268 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2269 remained unused and not that useful. A variety of other little bignum
2270 tweaks and fixes have also been made continuing on from the audit (see
2274 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2275 associated ASN1, EVP and SSL functions and old ASN1 macros.
2278 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2279 and this should never fail. So the return value from the use of
2280 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2281 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2284 *) BN_CTX_get() should return zero-valued bignums, providing the same
2285 initialised value as BN_new().
2286 [Geoff Thorpe, suggested by Ulf Möller]
2288 *) Support for inhibitAnyPolicy certificate extension.
2291 *) An audit of the BIGNUM code is underway, for which debugging code is
2292 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2293 is considered valid when processing BIGNUMs, and causes execution to
2294 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2295 further steps are taken to deliberately pollute unused data in BIGNUM
2296 structures to try and expose faulty code further on. For now, openssl will
2297 (in its default mode of operation) continue to tolerate the inconsistent
2298 forms that it has tolerated in the past, but authors and packagers should
2299 consider trying openssl and their own applications when compiled with
2300 these debugging symbols defined. It will help highlight potential bugs in
2301 their own code, and will improve the test coverage for OpenSSL itself. At
2302 some point, these tighter rules will become openssl's default to improve
2303 maintainability, though the assert()s and other overheads will remain only
2304 in debugging configurations. See bn.h for more details.
2305 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2307 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2308 that can only be obtained through BN_CTX_new() (which implicitly
2309 initialises it). The presence of this function only made it possible
2310 to overwrite an existing structure (and cause memory leaks).
2313 *) Because of the callback-based approach for implementing LHASH as a
2314 template type, lh_insert() adds opaque objects to hash-tables and
2315 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2316 to clean up those corresponding objects before destroying the hash table
2317 (and losing the object pointers). So some over-zealous constifications in
2318 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2319 objects as "const" and the lh_doall[_arg] callback wrappers are not
2320 prototyped to have "const" restrictions on the object pointers they are
2321 given (and so aren't required to cast them away any more).
2324 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2325 (speed) prefers to use its own implementation. The two implementations
2326 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2327 its object type properly exposed (MS_TM) instead of casting to/from "char
2328 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2329 aren't necessarily the greatest nomenclatures - but this is what was used
2330 internally to the implementation so I've used that for now.
2333 *) Ensure that deprecated functions do not get compiled when
2334 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2335 the self-tests were still using deprecated key-generation functions so
2336 these have been updated also.
2339 *) Reorganise PKCS#7 code to separate the digest location functionality
2340 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2341 New function PKCS7_set_digest() to set the digest type for PKCS#7
2342 digestedData type. Add additional code to correctly generate the
2343 digestedData type and add support for this type in PKCS7 initialization
2347 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2348 structure of type "other".
2351 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2352 sure the loop does correctly stop and breaking ("division by zero")
2353 modulus operations are not performed. The (pre-generated) prime
2354 table crypto/bn/bn_prime.h was already correct, but it could not be
2355 re-generated on some platforms because of the "division by zero"
2356 situation in the script.
2357 [Ralf S. Engelschall]
2359 *) Update support for ECC-based TLS ciphersuites according to
2360 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2361 SHA-1 now is only used for "small" curves (where the
2362 representation of a field element takes up to 24 bytes); for
2363 larger curves, the field element resulting from ECDH is directly
2364 used as premaster secret.
2365 [Douglas Stebila (Sun Microsystems Laboratories)]
2367 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2368 curve secp160r1 to the tests.
2369 [Douglas Stebila (Sun Microsystems Laboratories)]
2371 *) Add the possibility to load symbols globally with DSO.
2372 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2374 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2375 control of the error stack.
2378 *) Add support for STORE in ENGINE.
2381 *) Add the STORE type. The intention is to provide a common interface
2382 to certificate and key stores, be they simple file-based stores, or
2383 HSM-type store, or LDAP stores, or...
2384 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2387 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2388 pass a list of arguments to any function as well as provide a way
2389 for a function to pass data back to the caller.
2392 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2393 works like BUF_strdup() but can be used to duplicate a portion of
2394 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2398 *) Add the function sk_find_ex() which works like sk_find(), but will
2399 return an index to an element even if an exact match couldn't be
2400 found. The index is guaranteed to point at the element where the
2401 searched-for key would be inserted to preserve sorting order.
2404 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2405 takes an extra flags argument for optional functionality. Currently,
2406 the following flags are defined:
2408 OBJ_BSEARCH_VALUE_ON_NOMATCH
2409 This one gets OBJ_bsearch_ex() to return a pointer to the first
2410 element where the comparing function returns a negative or zero
2413 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2414 This one gets OBJ_bsearch_ex() to return a pointer to the first
2415 element where the comparing function returns zero. This is useful
2416 if there are more than one element where the comparing function
2420 *) Make it possible to create self-signed certificates with 'openssl ca'
2421 in such a way that the self-signed certificate becomes part of the
2422 CA database and uses the same mechanisms for serial number generation
2423 as all other certificate signing. The new flag '-selfsign' enables
2424 this functionality. Adapt CA.sh and CA.pl.in.
2427 *) Add functionality to check the public key of a certificate request
2428 against a given private. This is useful to check that a certificate
2429 request can be signed by that key (self-signing).
2432 *) Make it possible to have multiple active certificates with the same
2433 subject in the CA index file. This is done only if the keyword
2434 'unique_subject' is set to 'no' in the main CA section (default
2435 if 'CA_default') of the configuration file. The value is saved
2436 with the database itself in a separate index attribute file,
2437 named like the index file with '.attr' appended to the name.
2440 *) Generate muti valued AVAs using '+' notation in config files for
2444 *) Support for nameConstraints certificate extension.
2447 *) Support for policyConstraints certificate extension.
2450 *) Support for policyMappings certificate extension.
2453 *) Make sure the default DSA_METHOD implementation only uses its
2454 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2455 and change its own handlers to be NULL so as to remove unnecessary
2456 indirection. This lets alternative implementations fallback to the
2457 default implementation more easily.
2460 *) Support for directoryName in GeneralName related extensions
2464 *) Make it possible to link applications using Makefile.shared.
2465 Make that possible even when linking against static libraries!
2468 *) Support for single pass processing for S/MIME signing. This now
2469 means that S/MIME signing can be done from a pipe, in addition
2470 cleartext signing (multipart/signed type) is effectively streaming
2471 and the signed data does not need to be all held in memory.
2473 This is done with a new flag PKCS7_STREAM. When this flag is set
2474 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2475 is done after the data is output (and digests calculated) in
2476 SMIME_write_PKCS7().
2479 *) Add full support for -rpath/-R, both in shared libraries and
2480 applications, at least on the platforms where it's known how
2484 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2485 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2486 will now compute a table of multiples of the generator that
2487 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2488 faster (notably in the case of a single point multiplication,
2489 scalar * generator).
2490 [Nils Larsch, Bodo Moeller]
2492 *) IPv6 support for certificate extensions. The various extensions
2493 which use the IP:a.b.c.d can now take IPv6 addresses using the
2494 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2498 *) Added an ENGINE that implements RSA by performing private key
2499 exponentiations with the GMP library. The conversions to and from
2500 GMP's mpz_t format aren't optimised nor are any montgomery forms
2501 cached, and on x86 it appears OpenSSL's own performance has caught up.
2502 However there are likely to be other architectures where GMP could
2503 provide a boost. This ENGINE is not built in by default, but it can be
2504 specified at Configure time and should be accompanied by the necessary
2505 linker additions, eg;
2506 ./config -DOPENSSL_USE_GMP -lgmp
2509 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2510 testing availability of engines with "-t" - the old behaviour is
2511 produced by increasing the feature's verbosity with "-tt".
2514 *) ECDSA routines: under certain error conditions uninitialized BN objects
2515 could be freed. Solution: make sure initialization is performed early
2516 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2520 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2521 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2522 software implementations. For DSA and DH, parameter generation can
2523 also be overriden by providing the appropriate method callbacks.
2526 *) Change the "progress" mechanism used in key-generation and
2527 primality testing to functions that take a new BN_GENCB pointer in
2528 place of callback/argument pairs. The new API functions have "_ex"
2529 postfixes and the older functions are reimplemented as wrappers for
2530 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2531 declarations of the old functions to help (graceful) attempts to
2532 migrate to the new functions. Also, the new key-generation API
2533 functions operate on a caller-supplied key-structure and return
2534 success/failure rather than returning a key or NULL - this is to
2535 help make "keygen" another member function of RSA_METHOD etc.
2537 Example for using the new callback interface:
2539 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2543 BN_GENCB_set(&my_cb, my_callback, my_arg);
2545 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2546 /* For the meaning of a, b in calls to my_callback(), see the
2547 * documentation of the function that calls the callback.
2548 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2549 * my_callback should return 1 if it wants BN_is_prime_ex()
2550 * to continue, or 0 to stop.
2555 *) Change the ZLIB compression method to be stateful, and make it
2556 available to TLS with the number defined in
2557 draft-ietf-tls-compression-04.txt.
2560 *) Add the ASN.1 structures and functions for CertificatePair, which
2561 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2563 CertificatePair ::= SEQUENCE {
2564 forward [0] Certificate OPTIONAL,
2565 reverse [1] Certificate OPTIONAL,
2566 -- at least one of the pair shall be present -- }
2568 Also implement the PEM functions to read and write certificate
2569 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2571 This needed to be defined, mostly for the sake of the LDAP
2572 attribute crossCertificatePair, but may prove useful elsewhere as
2576 *) Make it possible to inhibit symlinking of shared libraries in
2577 Makefile.shared, for Cygwin's sake.
2580 *) Extend the BIGNUM API by creating a function
2581 void BN_set_negative(BIGNUM *a, int neg);
2582 and a macro that behave like
2583 int BN_is_negative(const BIGNUM *a);
2585 to avoid the need to access 'a->neg' directly in applications.
2588 *) Implement fast modular reduction for pseudo-Mersenne primes
2589 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2590 EC_GROUP_new_curve_GFp() will now automatically use this
2592 [Nils Larsch <nla@trustcenter.de>]
2594 *) Add new lock type (CRYPTO_LOCK_BN).
2597 *) Change the ENGINE framework to automatically load engines
2598 dynamically from specific directories unless they could be
2599 found to already be built in or loaded. Move all the
2600 current engines except for the cryptodev one to a new
2602 The engines in engines/ are built as shared libraries if
2603 the "shared" options was given to ./Configure or ./config.
2604 Otherwise, they are inserted in libcrypto.a.
2605 /usr/local/ssl/engines is the default directory for dynamic
2606 engines, but that can be overriden at configure time through
2607 the usual use of --prefix and/or --openssldir, and at run
2608 time with the environment variable OPENSSL_ENGINES.
2609 [Geoff Thorpe and Richard Levitte]
2611 *) Add Makefile.shared, a helper makefile to build shared
2612 libraries. Addapt Makefile.org.
2615 *) Add version info to Win32 DLLs.
2616 [Peter 'Luna' Runestig" <peter@runestig.com>]
2618 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2619 can be added using this API to created arbitrary PKCS#12
2620 files while avoiding the low level API.
2622 New options to PKCS12_create(), key or cert can be NULL and
2623 will then be omitted from the output file. The encryption
2624 algorithm NIDs can be set to -1 for no encryption, the mac
2625 iteration count can be set to 0 to omit the mac.
2627 Enhance pkcs12 utility by making the -nokeys and -nocerts
2628 options work when creating a PKCS#12 file. New option -nomac
2629 to omit the mac, NONE can be set for an encryption algorithm.
2630 New code is modified to use the enhanced PKCS12_create()
2631 instead of the low level API.
2634 *) Extend ASN1 encoder to support indefinite length constructed
2635 encoding. This can output sequences tags and octet strings in
2636 this form. Modify pk7_asn1.c to support indefinite length
2637 encoding. This is experimental and needs additional code to
2638 be useful, such as an ASN1 bio and some enhanced streaming
2641 Extend template encode functionality so that tagging is passed
2642 down to the template encoder.
2645 *) Let 'openssl req' fail if an argument to '-newkey' is not
2646 recognized instead of using RSA as a default.
2649 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2650 As these are not official, they are not included in "ALL";
2651 the "ECCdraft" ciphersuite group alias can be used to select them.
2652 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2654 *) Add ECDH engine support.
2655 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2657 *) Add ECDH in new directory crypto/ecdh/.
2658 [Douglas Stebila (Sun Microsystems Laboratories)]
2660 *) Let BN_rand_range() abort with an error after 100 iterations
2661 without success (which indicates a broken PRNG).
2664 *) Change BN_mod_sqrt() so that it verifies that the input value
2665 is really the square of the return value. (Previously,
2666 BN_mod_sqrt would show GIGO behaviour.)
2669 *) Add named elliptic curves over binary fields from X9.62, SECG,
2670 and WAP/WTLS; add OIDs that were still missing.
2672 [Sheueling Chang Shantz and Douglas Stebila
2673 (Sun Microsystems Laboratories)]
2675 *) Extend the EC library for elliptic curves over binary fields
2676 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2679 EC_GF2m_simple_method
2683 EC_GROUP_new_curve_GF2m
2684 EC_GROUP_set_curve_GF2m
2685 EC_GROUP_get_curve_GF2m
2686 EC_POINT_set_affine_coordinates_GF2m
2687 EC_POINT_get_affine_coordinates_GF2m
2688 EC_POINT_set_compressed_coordinates_GF2m
2690 Point compression for binary fields is disabled by default for
2691 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2694 As binary polynomials are represented as BIGNUMs, various members
2695 of the EC_GROUP and EC_POINT data structures can be shared
2696 between the implementations for prime fields and binary fields;
2697 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2698 are essentially identical to their ..._GFp counterparts.
2699 (For simplicity, the '..._GFp' prefix has been dropped from
2700 various internal method names.)
2702 An internal 'field_div' method (similar to 'field_mul' and
2703 'field_sqr') has been added; this is used only for binary fields.
2705 [Sheueling Chang Shantz and Douglas Stebila
2706 (Sun Microsystems Laboratories)]
2708 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2709 through methods ('mul', 'precompute_mult').
2711 The generic implementations (now internally called 'ec_wNAF_mul'
2712 and 'ec_wNAF_precomputed_mult') remain the default if these
2713 methods are undefined.
2715 [Sheueling Chang Shantz and Douglas Stebila
2716 (Sun Microsystems Laboratories)]
2718 *) New function EC_GROUP_get_degree, which is defined through
2719 EC_METHOD. For curves over prime fields, this returns the bit
2720 length of the modulus.
2722 [Sheueling Chang Shantz and Douglas Stebila
2723 (Sun Microsystems Laboratories)]
2725 *) New functions EC_GROUP_dup, EC_POINT_dup.
2726 (These simply call ..._new and ..._copy).
2728 [Sheueling Chang Shantz and Douglas Stebila
2729 (Sun Microsystems Laboratories)]
2731 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2732 Polynomials are represented as BIGNUMs (where the sign bit is not
2733 used) in the following functions [macros]:
2736 BN_GF2m_sub [= BN_GF2m_add]
2737 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2738 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2739 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2741 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2742 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2743 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2744 BN_GF2m_cmp [= BN_ucmp]
2746 (Note that only the 'mod' functions are actually for fields GF(2^m).
2747 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2749 For some functions, an the irreducible polynomial defining a
2750 field can be given as an 'unsigned int[]' with strictly
2751 decreasing elements giving the indices of those bits that are set;
2752 i.e., p[] represents the polynomial
2753 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2755 p[0] > p[1] > ... > p[k] = 0.
2756 This applies to the following functions:
2761 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2762 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2764 BN_GF2m_mod_sqrt_arr
2765 BN_GF2m_mod_solve_quad_arr
2769 Conversion can be performed by the following functions:
2774 bntest.c has additional tests for binary polynomial arithmetic.
2776 Two implementations for BN_GF2m_mod_div() are available.
2777 The default algorithm simply uses BN_GF2m_mod_inv() and
2778 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2779 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2780 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2782 [Sheueling Chang Shantz and Douglas Stebila
2783 (Sun Microsystems Laboratories)]
2785 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2786 functionality is disabled at compile-time.
2787 [Douglas Stebila <douglas.stebila@sun.com>]
2789 *) Change default behaviour of 'openssl asn1parse' so that more
2790 information is visible when viewing, e.g., a certificate:
2792 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2793 mode the content of non-printable OCTET STRINGs is output in a
2794 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2795 avoid the appearance of a printable string.
2796 [Nils Larsch <nla@trustcenter.de>]
2798 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2800 EC_GROUP_set_asn1_flag()
2801 EC_GROUP_get_asn1_flag()
2802 EC_GROUP_set_point_conversion_form()
2803 EC_GROUP_get_point_conversion_form()
2804 These control ASN1 encoding details:
2805 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2806 has been set to OPENSSL_EC_NAMED_CURVE.
2807 - Points are encoded in uncompressed form by default; options for
2808 asn1_for are as for point2oct, namely
2809 POINT_CONVERSION_COMPRESSED
2810 POINT_CONVERSION_UNCOMPRESSED
2811 POINT_CONVERSION_HYBRID
2813 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2816 EC_GROUP_get0_seed()
2817 EC_GROUP_get_seed_len()
2818 This is used only for ASN1 purposes (so far).
2819 [Nils Larsch <nla@trustcenter.de>]
2821 *) Add 'field_type' member to EC_METHOD, which holds the NID
2822 of the appropriate field type OID. The new function
2823 EC_METHOD_get_field_type() returns this value.
2824 [Nils Larsch <nla@trustcenter.de>]
2829 EC_POINT_point2hex()
2830 EC_POINT_hex2point()
2831 providing useful interfaces to EC_POINT_point2oct() and
2832 EC_POINT_oct2point().
2833 [Nils Larsch <nla@trustcenter.de>]
2835 *) Change internals of the EC library so that the functions
2836 EC_GROUP_set_generator()
2837 EC_GROUP_get_generator()
2838 EC_GROUP_get_order()
2839 EC_GROUP_get_cofactor()
2840 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2841 to methods, which would lead to unnecessary code duplication when
2842 adding different types of curves.
2843 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2845 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2846 arithmetic, and such that modified wNAFs are generated
2847 (which avoid length expansion in many cases).
2850 *) Add a function EC_GROUP_check_discriminant() (defined via
2851 EC_METHOD) that verifies that the curve discriminant is non-zero.
2853 Add a function EC_GROUP_check() that makes some sanity tests
2854 on a EC_GROUP, its generator and order. This includes
2855 EC_GROUP_check_discriminant().
2856 [Nils Larsch <nla@trustcenter.de>]
2858 *) Add ECDSA in new directory crypto/ecdsa/.
2860 Add applications 'openssl ecparam' and 'openssl ecdsa'
2861 (these are based on 'openssl dsaparam' and 'openssl dsa').
2863 ECDSA support is also included in various other files across the
2864 library. Most notably,
2865 - 'openssl req' now has a '-newkey ecdsa:file' option;
2866 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2867 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2868 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2869 them suitable for ECDSA where domain parameters must be
2870 extracted before the specific public key;
2871 - ECDSA engine support has been added.
2872 [Nils Larsch <nla@trustcenter.de>]
2874 *) Include some named elliptic curves, and add OIDs from X9.62,
2875 SECG, and WAP/WTLS. Each curve can be obtained from the new
2877 EC_GROUP_new_by_curve_name(),
2878 and the list of available named curves can be obtained with
2879 EC_get_builtin_curves().
2880 Also add a 'curve_name' member to EC_GROUP objects, which can be
2882 EC_GROUP_set_curve_name()
2883 EC_GROUP_get_curve_name()
2884 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2886 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2887 was actually never needed) and in BN_mul(). The removal in BN_mul()
2888 required a small change in bn_mul_part_recursive() and the addition
2889 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2890 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2891 bn_sub_words() and bn_add_words() except they take arrays with
2895 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2897 *) Cleanse PEM buffers before freeing them since they may contain
2899 [Benjamin Bennett <ben@psc.edu>]
2901 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2902 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2903 authentication-only ciphersuites.
2906 *) Since AES128 and AES256 share a single mask bit in the logic of
2907 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2908 kludge to work properly if AES128 is available and AES256 isn't.
2911 *) Expand security boundary to match 1.1.1 module.
2914 *) Remove redundant features: hash file source, editing of test vectors
2915 modify fipsld to use external fips_premain.c signature.
2918 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2919 run algorithm test programs.
2922 *) Make algorithm test programs more tolerant of whitespace.
2925 *) Have SSL/TLS server implementation tolerate "mismatched" record
2926 protocol version while receiving ClientHello even if the
2927 ClientHello is fragmented. (The server can't insist on the
2928 particular protocol version it has chosen before the ServerHello
2929 message has informed the client about his choice.)
2932 *) Load error codes if they are not already present instead of using a
2933 static variable. This allows them to be cleanly unloaded and reloaded.
2936 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2938 *) Introduce limits to prevent malicious keys being able to
2939 cause a denial of service. (CVE-2006-2940)
2940 [Steve Henson, Bodo Moeller]
2942 *) Fix ASN.1 parsing of certain invalid structures that can result
2943 in a denial of service. (CVE-2006-2937) [Steve Henson]
2945 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2946 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2948 *) Fix SSL client code which could crash if connecting to a
2949 malicious SSLv2 server. (CVE-2006-4343)
2950 [Tavis Ormandy and Will Drewry, Google Security Team]
2952 *) Change ciphersuite string processing so that an explicit
2953 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
2954 will no longer include "AES128-SHA"), and any other similar
2955 ciphersuite (same bitmap) from *other* protocol versions (so that
2956 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
2957 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
2958 changes from 0.9.8b and 0.9.8d.
2961 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
2963 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2964 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2966 *) Change the Unix randomness entropy gathering to use poll() when
2967 possible instead of select(), since the latter has some
2968 undesirable limitations.
2969 [Darryl Miles via Richard Levitte and Bodo Moeller]
2971 *) Disable rogue ciphersuites:
2973 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2974 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2975 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2977 The latter two were purportedly from
2978 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2981 Also deactive the remaining ciphersuites from
2982 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2983 unofficial, and the ID has long expired.
2986 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2987 dual-core machines) and other potential thread-safety issues.
2990 Changes between 0.9.7i and 0.9.7j [04 May 2006]
2992 *) Adapt fipsld and the build system to link against the validated FIPS
2993 module in FIPS mode.
2996 *) Fixes for VC++ 2005 build under Windows.
2999 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
3000 from a Windows bash shell such as MSYS. It is autodetected from the
3001 "config" script when run from a VC++ environment. Modify standard VC++
3002 build to use fipscanister.o from the GNU make build.
3005 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
3007 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
3008 The value now differs depending on if you build for FIPS or not.
3009 BEWARE! A program linked with a shared FIPSed libcrypto can't be
3010 safely run with a non-FIPSed libcrypto, as it may crash because of
3011 the difference induced by this change.
3014 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
3016 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3017 (part of SSL_OP_ALL). This option used to disable the
3018 countermeasure against man-in-the-middle protocol-version
3019 rollback in the SSL 2.0 server implementation, which is a bad
3020 idea. (CVE-2005-2969)
3022 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3023 for Information Security, National Institute of Advanced Industrial
3024 Science and Technology [AIST], Japan)]
3026 *) Minimal support for X9.31 signatures and PSS padding modes. This is
3027 mainly for FIPS compliance and not fully integrated at this stage.
3030 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
3031 the exponentiation using a fixed-length exponent. (Otherwise,
3032 the information leaked through timing could expose the secret key
3033 after many signatures; cf. Bleichenbacher's attack on DSA with
3037 *) Make a new fixed-window mod_exp implementation the default for
3038 RSA, DSA, and DH private-key operations so that the sequence of
3039 squares and multiplies and the memory access pattern are
3040 independent of the particular secret key. This will mitigate
3041 cache-timing and potential related attacks.
3043 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
3044 and this is automatically used by BN_mod_exp_mont() if the new flag
3045 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
3046 will use this BN flag for private exponents unless the flag
3047 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
3048 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
3050 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
3052 *) Change the client implementation for SSLv23_method() and
3053 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
3054 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
3055 (Previously, the SSL 2.0 backwards compatible Client Hello
3056 message format would be used even with SSL_OP_NO_SSLv2.)
3059 *) Add support for smime-type MIME parameter in S/MIME messages which some
3063 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
3064 a threadsafe manner. Modify rsa code to use new function and add calls
3065 to dsa and dh code (which had race conditions before).
3068 *) Include the fixed error library code in the C error file definitions
3069 instead of fixing them up at runtime. This keeps the error code
3070 structures constant.
3073 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3075 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3078 *) Fixes for newer kerberos headers. NB: the casts are needed because
3079 the 'length' field is signed on one version and unsigned on another
3080 with no (?) obvious way to tell the difference, without these VC++
3081 complains. Also the "definition" of FAR (blank) is no longer included
3082 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3083 some needed definitions.
3086 *) Undo Cygwin change.
3089 *) Added support for proxy certificates according to RFC 3820.
3090 Because they may be a security thread to unaware applications,
3091 they must be explicitely allowed in run-time. See
3092 docs/HOWTO/proxy_certificates.txt for further information.
3095 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3097 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3098 server and client random values. Previously
3099 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3100 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3102 This change has negligible security impact because:
3104 1. Server and client random values still have 24 bytes of pseudo random
3107 2. Server and client random values are sent in the clear in the initial
3110 3. The master secret is derived using the premaster secret (48 bytes in
3111 size for static RSA ciphersuites) as well as client server and random
3114 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3117 [Stephen Henson, reported by UK NISCC]
3119 *) Use Windows randomness collection on Cygwin.
3122 *) Fix hang in EGD/PRNGD query when communication socket is closed
3123 prematurely by EGD/PRNGD.
3124 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3126 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3129 *) Back-port of selected performance improvements from development
3130 branch, as well as improved support for PowerPC platforms.
3133 *) Add lots of checks for memory allocation failure, error codes to indicate
3134 failure and freeing up memory if a failure occurs.
3135 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3137 *) Add new -passin argument to dgst.
3140 *) Perform some character comparisons of different types in X509_NAME_cmp:
3141 this is needed for some certificates that reencode DNs into UTF8Strings
3142 (in violation of RFC3280) and can't or wont issue name rollover
3146 *) Make an explicit check during certificate validation to see that
3147 the CA setting in each certificate on the chain is correct. As a
3148 side effect always do the following basic checks on extensions,
3149 not just when there's an associated purpose to the check:
3151 - if there is an unhandled critical extension (unless the user
3152 has chosen to ignore this fault)
3153 - if the path length has been exceeded (if one is set at all)
3154 - that certain extensions fit the associated purpose (if one has
3158 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3160 *) Avoid a race condition when CRLs are checked in a multi threaded
3161 environment. This would happen due to the reordering of the revoked
3162 entries during signature checking and serial number lookup. Now the
3163 encoding is cached and the serial number sort performed under a lock.
3164 Add new STACK function sk_is_sorted().
3167 *) Add Delta CRL to the extension code.
3170 *) Various fixes to s3_pkt.c so alerts are sent properly.
3171 [David Holmes <d.holmes@f5.com>]
3173 *) Reduce the chances of duplicate issuer name and serial numbers (in
3174 violation of RFC3280) using the OpenSSL certificate creation utilities.
3175 This is done by creating a random 64 bit value for the initial serial
3176 number when a serial number file is created or when a self signed
3177 certificate is created using 'openssl req -x509'. The initial serial
3178 number file is created using 'openssl x509 -next_serial' in CA.pl
3179 rather than being initialized to 1.
3182 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3184 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3185 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3186 [Joe Orton, Steve Henson]
3188 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3190 [Joe Orton, Steve Henson]
3192 *) Make it possible to have multiple active certificates with the same
3193 subject in the CA index file. This is done only if the keyword
3194 'unique_subject' is set to 'no' in the main CA section (default
3195 if 'CA_default') of the configuration file. The value is saved
3196 with the database itself in a separate index attribute file,
3197 named like the index file with '.attr' appended to the name.
3200 *) X509 verify fixes. Disable broken certificate workarounds when
3201 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3202 keyUsage extension present. Don't accept CRLs with unhandled critical
3203 extensions: since verify currently doesn't process CRL extensions this
3204 rejects a CRL with *any* critical extensions. Add new verify error codes
3208 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3209 A clarification of RFC2560 will require the use of OCTET STRINGs and
3210 some implementations cannot handle the current raw format. Since OpenSSL
3211 copies and compares OCSP nonces as opaque blobs without any attempt at
3212 parsing them this should not create any compatibility issues.
3215 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3216 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3217 this HMAC (and other) operations are several times slower than OpenSSL
3221 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3222 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3224 *) Use the correct content when signing type "other".
3227 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3229 *) Fix various bugs revealed by running the NISCC test suite:
3231 Stop out of bounds reads in the ASN1 code when presented with
3232 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3234 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3236 If verify callback ignores invalid public key errors don't try to check
3237 certificate signature with the NULL public key.
3241 *) New -ignore_err option in ocsp application to stop the server
3242 exiting on the first error in a request.
3245 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3246 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3250 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3251 extra data after the compression methods not only for TLS 1.0
3252 but also for SSL 3.0 (as required by the specification).
3253 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3255 *) Change X509_certificate_type() to mark the key as exported/exportable
3256 when it's 512 *bits* long, not 512 bytes.
3259 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3260 blocks during encryption.
3263 *) Various fixes to base64 BIO and non blocking I/O. On write
3264 flushes were not handled properly if the BIO retried. On read
3265 data was not being buffered properly and had various logic bugs.
3266 This also affects blocking I/O when the data being decoded is a
3270 *) Various S/MIME bugfixes and compatibility changes:
3271 output correct application/pkcs7 MIME type if
3272 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3273 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3274 of files as .eml work). Correctly handle very long lines in MIME
3278 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3280 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3281 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3282 a protocol version number mismatch like a decryption error
3283 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3286 *) Turn on RSA blinding by default in the default implementation
3287 to avoid a timing attack. Applications that don't want it can call
3288 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3289 They would be ill-advised to do so in most cases.
3290 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3292 *) Change RSA blinding code so that it works when the PRNG is not
3293 seeded (in this case, the secret RSA exponent is abused as
3294 an unpredictable seed -- if it is not unpredictable, there
3295 is no point in blinding anyway). Make RSA blinding thread-safe
3296 by remembering the creator's thread ID in rsa->blinding and
3297 having all other threads use local one-time blinding factors
3298 (this requires more computation than sharing rsa->blinding, but
3299 avoids excessive locking; and if an RSA object is not shared
3300 between threads, blinding will still be very fast).
3303 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3304 ENGINE as defaults for all supported algorithms irrespective of
3305 the 'flags' parameter. 'flags' is now honoured, so applications
3306 should make sure they are passing it correctly.
3309 *) Target "mingw" now allows native Windows code to be generated in
3310 the Cygwin environment as well as with the MinGW compiler.
3313 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3315 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3316 via timing by performing a MAC computation even if incorrrect
3317 block cipher padding has been found. This is a countermeasure
3318 against active attacks where the attacker has to distinguish
3319 between bad padding and a MAC verification error. (CVE-2003-0078)
3321 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3322 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3323 Martin Vuagnoux (EPFL, Ilion)]
3325 *) Make the no-err option work as intended. The intention with no-err
3326 is not to have the whole error stack handling routines removed from
3327 libcrypto, it's only intended to remove all the function name and
3328 reason texts, thereby removing some of the footprint that may not
3329 be interesting if those errors aren't displayed anyway.
3331 NOTE: it's still possible for any application or module to have it's
3332 own set of error texts inserted. The routines are there, just not
3333 used by default when no-err is given.
3336 *) Add support for FreeBSD on IA64.
3337 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3339 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3340 Kerberos function mit_des_cbc_cksum(). Before this change,
3341 the value returned by DES_cbc_cksum() was like the one from
3342 mit_des_cbc_cksum(), except the bytes were swapped.
3343 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3345 *) Allow an application to disable the automatic SSL chain building.
3346 Before this a rather primitive chain build was always performed in
3347 ssl3_output_cert_chain(): an application had no way to send the
3348 correct chain if the automatic operation produced an incorrect result.
3350 Now the chain builder is disabled if either:
3352 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3354 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3356 The reasoning behind this is that an application would not want the
3357 auto chain building to take place if extra chain certificates are
3358 present and it might also want a means of sending no additional
3359 certificates (for example the chain has two certificates and the
3363 *) Add the possibility to build without the ENGINE framework.
3364 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3366 *) Under Win32 gmtime() can return NULL: check return value in
3367 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3370 *) DSA routines: under certain error conditions uninitialized BN objects
3371 could be freed. Solution: make sure initialization is performed early
3372 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3373 Nils Larsch <nla@trustcenter.de> via PR#459)
3376 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3377 checked on reconnect on the client side, therefore session resumption
3378 could still fail with a "ssl session id is different" error. This
3379 behaviour is masked when SSL_OP_ALL is used due to
3380 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3381 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3382 followup to PR #377.
3385 *) IA-32 assembler support enhancements: unified ELF targets, support
3386 for SCO/Caldera platforms, fix for Cygwin shared build.
3389 *) Add support for FreeBSD on sparc64. As a consequence, support for
3390 FreeBSD on non-x86 processors is separate from x86 processors on
3391 the config script, much like the NetBSD support.
3392 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3394 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3396 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3399 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3400 code (06) was taken as the first octet of the session ID and the last
3401 octet was ignored consequently. As a result SSLv2 client side session
3402 caching could not have worked due to the session ID mismatch between
3404 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3408 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3409 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3413 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3414 seems that in spite of existing for more than a year, many application
3415 author have done nothing to provide the necessary callbacks, which
3416 means that this particular engine will not work properly anywhere.
3417 This is a very unfortunate situation which forces us, in the name
3418 of usability, to give the hw_ncipher.c a static lock, which is part
3420 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3421 appear in 0.9.8 or later. We EXPECT application authors to have
3422 dealt properly with this when 0.9.8 is released (unless we actually
3423 make such changes in the libcrypto locking code that changes will
3424 have to be made anyway).
3427 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3428 octets have been read, EOF or an error occurs. Without this change
3429 some truncated ASN1 structures will not produce an error.
3432 *) Disable Heimdal support, since it hasn't been fully implemented.
3433 Still give the possibility to force the use of Heimdal, but with
3434 warnings and a request that patches get sent to openssl-dev.
3437 *) Add the VC-CE target, introduce the WINCE sysname, and add
3438 INSTALL.WCE and appropriate conditionals to make it build.
3439 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3441 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3442 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3443 edit numbers of the version.
3444 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3446 *) Introduce safe string copy and catenation functions
3447 (BUF_strlcpy() and BUF_strlcat()).
3448 [Ben Laurie (CHATS) and Richard Levitte]
3450 *) Avoid using fixed-size buffers for one-line DNs.
3451 [Ben Laurie (CHATS)]
3453 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3454 resizing buffers containing secrets, and use where appropriate.
3455 [Ben Laurie (CHATS)]
3457 *) Avoid using fixed size buffers for configuration file location.
3458 [Ben Laurie (CHATS)]
3460 *) Avoid filename truncation for various CA files.
3461 [Ben Laurie (CHATS)]
3463 *) Use sizeof in preference to magic numbers.
3464 [Ben Laurie (CHATS)]
3466 *) Avoid filename truncation in cert requests.
3467 [Ben Laurie (CHATS)]
3469 *) Add assertions to check for (supposedly impossible) buffer
3471 [Ben Laurie (CHATS)]
3473 *) Don't cache truncated DNS entries in the local cache (this could
3474 potentially lead to a spoofing attack).
3475 [Ben Laurie (CHATS)]
3477 *) Fix various buffers to be large enough for hex/decimal
3478 representations in a platform independent manner.
3479 [Ben Laurie (CHATS)]
3481 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3482 resizing buffers containing secrets, and use where appropriate.
3483 [Ben Laurie (CHATS)]
3485 *) Add BIO_indent() to avoid much slightly worrying code to do
3487 [Ben Laurie (CHATS)]
3489 *) Convert sprintf()/BIO_puts() to BIO_printf().
3490 [Ben Laurie (CHATS)]
3492 *) buffer_gets() could terminate with the buffer only half
3494 [Ben Laurie (CHATS)]
3496 *) Add assertions to prevent user-supplied crypto functions from
3497 overflowing internal buffers by having large block sizes, etc.
3498 [Ben Laurie (CHATS)]
3500 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3502 [Ben Laurie (CHATS)]
3504 *) Eliminate unused copy of key in RC4.
3505 [Ben Laurie (CHATS)]
3507 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3508 [Ben Laurie (CHATS)]
3510 *) Fix off-by-one error in EGD path.
3511 [Ben Laurie (CHATS)]
3513 *) If RANDFILE path is too long, ignore instead of truncating.
3514 [Ben Laurie (CHATS)]
3516 *) Eliminate unused and incorrectly sized X.509 structure
3518 [Ben Laurie (CHATS)]
3520 *) Eliminate unused and dangerous function knumber().
3521 [Ben Laurie (CHATS)]
3523 *) Eliminate unused and dangerous structure, KSSL_ERR.
3524 [Ben Laurie (CHATS)]
3526 *) Protect against overlong session ID context length in an encoded
3527 session object. Since these are local, this does not appear to be
3529 [Ben Laurie (CHATS)]
3531 *) Change from security patch (see 0.9.6e below) that did not affect
3532 the 0.9.6 release series:
3534 Remote buffer overflow in SSL3 protocol - an attacker could
3535 supply an oversized master key in Kerberos-enabled versions.
3537 [Ben Laurie (CHATS)]
3539 *) Change the SSL kerb5 codes to match RFC 2712.
3542 *) Make -nameopt work fully for req and add -reqopt switch.
3543 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3545 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3546 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3548 *) Make sure tests can be performed even if the corresponding algorithms
3549 have been removed entirely. This was also the last step to make
3550 OpenSSL compilable with DJGPP under all reasonable conditions.
3551 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3553 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3554 to allow version independent disabling of normally unselected ciphers,
3555 which may be activated as a side-effect of selecting a single cipher.
3557 (E.g., cipher list string "RSA" enables ciphersuites that are left
3558 out of "ALL" because they do not provide symmetric encryption.
3559 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3560 [Lutz Jaenicke, Bodo Moeller]
3562 *) Add appropriate support for separate platform-dependent build
3563 directories. The recommended way to make a platform-dependent
3564 build directory is the following (tested on Linux), maybe with
3567 # Place yourself outside of the OpenSSL source tree. In
3568 # this example, the environment variable OPENSSL_SOURCE
3569 # is assumed to contain the absolute OpenSSL source directory.
3570 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3571 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3572 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3573 mkdir -p `dirname $F`
3574 ln -s $OPENSSL_SOURCE/$F $F
3577 To be absolutely sure not to disturb the source tree, a "make clean"
3578 is a good thing. If it isn't successfull, don't worry about it,
3579 it probably means the source directory is very clean.
3582 *) Make sure any ENGINE control commands make local copies of string
3583 pointers passed to them whenever necessary. Otherwise it is possible
3584 the caller may have overwritten (or deallocated) the original string
3585 data when a later ENGINE operation tries to use the stored values.
3586 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3588 *) Improve diagnostics in file reading and command-line digests.
3589 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3591 *) Add AES modes CFB and OFB to the object database. Correct an
3592 error in AES-CFB decryption.
3595 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3596 allows existing EVP_CIPHER_CTX structures to be reused after
3597 calling EVP_*Final(). This behaviour is used by encryption
3598 BIOs and some applications. This has the side effect that
3599 applications must explicitly clean up cipher contexts with
3600 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3603 *) Check the values of dna and dnb in bn_mul_recursive before calling
3604 bn_mul_comba (a non zero value means the a or b arrays do not contain
3605 n2 elements) and fallback to bn_mul_normal if either is not zero.
3608 *) Fix escaping of non-ASCII characters when using the -subj option
3609 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3612 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3613 form for "surname", serialNumber has no short form.
3614 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3615 therefore remove "mail" short name for "internet 7".
3616 The OID for unique identifiers in X509 certificates is
3617 x500UniqueIdentifier, not uniqueIdentifier.
3618 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3621 *) Add an "init" command to the ENGINE config module and auto initialize
3622 ENGINEs. Without any "init" command the ENGINE will be initialized
3623 after all ctrl commands have been executed on it. If init=1 the
3624 ENGINE is initailized at that point (ctrls before that point are run
3625 on the uninitialized ENGINE and after on the initialized one). If
3626 init=0 then the ENGINE will not be iniatialized at all.
3629 *) Fix the 'app_verify_callback' interface so that the user-defined
3630 argument is actually passed to the callback: In the
3631 SSL_CTX_set_cert_verify_callback() prototype, the callback
3632 declaration has been changed from
3635 int (*cb)(X509_STORE_CTX *,void *);
3636 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3637 i=s->ctx->app_verify_callback(&ctx)
3638 has been changed into
3639 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3641 To update applications using SSL_CTX_set_cert_verify_callback(),
3642 a dummy argument can be added to their callback functions.
3643 [D. K. Smetters <smetters@parc.xerox.com>]
3645 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3646 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3648 *) Add and OPENSSL_LOAD_CONF define which will cause
3649 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3650 This allows older applications to transparently support certain
3651 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3652 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3653 load the config file and OPENSSL_add_all_algorithms_conf() which will
3654 always load it have also been added.
3657 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
3658 Adjust NIDs and EVP layer.
3659 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3661 *) Config modules support in openssl utility.
3663 Most commands now load modules from the config file,
3664 though in a few (such as version) this isn't done
3665 because it couldn't be used for anything.
3667 In the case of ca and req the config file used is
3668 the same as the utility itself: that is the -config
3669 command line option can be used to specify an
3673 *) Move default behaviour from OPENSSL_config(). If appname is NULL
3674 use "openssl_conf" if filename is NULL use default openssl config file.
3677 *) Add an argument to OPENSSL_config() to allow the use of an alternative
3678 config section name. Add a new flag to tolerate a missing config file
3679 and move code to CONF_modules_load_file().
3682 *) Support for crypto accelerator cards from Accelerated Encryption
3683 Processing, www.aep.ie. (Use engine 'aep')
3684 The support was copied from 0.9.6c [engine] and adapted/corrected
3685 to work with the new engine framework.
3686 [AEP Inc. and Richard Levitte]
3688 *) Support for SureWare crypto accelerator cards from Baltimore
3689 Technologies. (Use engine 'sureware')
3690 The support was copied from 0.9.6c [engine] and adapted
3691 to work with the new engine framework.
3694 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
3695 make the newer ENGINE framework commands for the CHIL engine work.
3696 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
3698 *) Make it possible to produce shared libraries on ReliantUNIX.
3699 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
3701 *) Add the configuration target debug-linux-ppro.
3702 Make 'openssl rsa' use the general key loading routines
3703 implemented in apps.c, and make those routines able to
3704 handle the key format FORMAT_NETSCAPE and the variant
3706 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3708 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3709 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3711 *) Add -keyform to rsautl, and document -engine.
3712 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3714 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3715 BIO_R_NO_SUCH_FILE error code rather than the generic
3716 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3719 *) Add new functions
3721 ERR_peek_last_error_line
3722 ERR_peek_last_error_line_data.
3723 These are similar to
3726 ERR_peek_error_line_data,
3727 but report on the latest error recorded rather than the first one
3728 still in the error queue.
3729 [Ben Laurie, Bodo Moeller]
3731 *) default_algorithms option in ENGINE config module. This allows things
3733 default_algorithms = ALL
3734 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3737 *) Prelminary ENGINE config module.
3740 *) New experimental application configuration code.
3743 *) Change the AES code to follow the same name structure as all other
3744 symmetric ciphers, and behave the same way. Move everything to
3745 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3746 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3748 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3749 [Ben Laurie and Theo de Raadt]
3751 *) Add option to output public keys in req command.
3752 [Massimiliano Pala madwolf@openca.org]
3754 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3755 (up to about 10% better than before for P-192 and P-224).
3758 *) New functions/macros
3760 SSL_CTX_set_msg_callback(ctx, cb)
3761 SSL_CTX_set_msg_callback_arg(ctx, arg)
3762 SSL_set_msg_callback(ssl, cb)
3763 SSL_set_msg_callback_arg(ssl, arg)
3765 to request calling a callback function
3767 void cb(int write_p, int version, int content_type,
3768 const void *buf, size_t len, SSL *ssl, void *arg)
3770 whenever a protocol message has been completely received
3771 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3772 protocol version according to which the SSL library interprets
3773 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3774 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3775 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3776 specification (change_cipher_spec(20), alert(21), handshake(22)).
3777 'buf' and 'len' point to the actual message, 'ssl' to the
3778 SSL object, and 'arg' is the application-defined value set by
3779 SSL[_CTX]_set_msg_callback_arg().
3781 'openssl s_client' and 'openssl s_server' have new '-msg' options
3782 to enable a callback that displays all protocol messages.
3785 *) Change the shared library support so shared libraries are built as
3786 soon as the corresponding static library is finished, and thereby get
3787 openssl and the test programs linked against the shared library.
3788 This still only happens when the keyword "shard" has been given to
3789 the configuration scripts.
3791 NOTE: shared library support is still an experimental thing, and
3792 backward binary compatibility is still not guaranteed.
3793 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3795 *) Add support for Subject Information Access extension.
3796 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3798 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3799 additional bytes when new memory had to be allocated, not just
3800 when reusing an existing buffer.
3803 *) New command line and configuration option 'utf8' for the req command.
3804 This allows field values to be specified as UTF8 strings.
3807 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3808 runs for the former and machine-readable output for the latter.
3811 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3812 of the e-mail address in the DN (i.e., it will go into a certificate
3813 extension only). The new configuration file option 'email_in_dn = no'
3814 has the same effect.
3815 [Massimiliano Pala madwolf@openca.org]
3817 *) Change all functions with names starting with des_ to be starting
3818 with DES_ instead. Add wrappers that are compatible with libdes,
3819 but are named _ossl_old_des_*. Finally, add macros that map the
3820 des_* symbols to the corresponding _ossl_old_des_* if libdes
3821 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3822 desired, the des_* symbols will be mapped to DES_*, with one
3825 Since we provide two compatibility mappings, the user needs to
3826 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3827 compatibility is desired. The default (i.e., when that macro
3828 isn't defined) is OpenSSL 0.9.6c compatibility.
3830 There are also macros that enable and disable the support of old
3831 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3832 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3833 are defined, the default will apply: to support the old des routines.
3835 In either case, one must include openssl/des.h to get the correct
3836 definitions. Do not try to just include openssl/des_old.h, that
3839 NOTE: This is a major break of an old API into a new one. Software
3840 authors are encouraged to switch to the DES_ style functions. Some
3841 time in the future, des_old.h and the libdes compatibility functions
3842 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
3843 default), and then completely removed.
3846 *) Test for certificates which contain unsupported critical extensions.
3847 If such a certificate is found during a verify operation it is
3848 rejected by default: this behaviour can be overridden by either
3849 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
3850 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
3851 X509_supported_extension() has also been added which returns 1 if a
3852 particular extension is supported.
3855 *) Modify the behaviour of EVP cipher functions in similar way to digests
3856 to retain compatibility with existing code.
3859 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
3860 compatibility with existing code. In particular the 'ctx' parameter does
3861 not have to be to be initialized before the call to EVP_DigestInit() and
3862 it is tidied up after a call to EVP_DigestFinal(). New function
3863 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
3864 EVP_MD_CTX_copy() changed to not require the destination to be
3865 initialized valid and new function EVP_MD_CTX_copy_ex() added which
3866 requires the destination to be valid.
3868 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
3869 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
3872 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
3873 so that complete 'Handshake' protocol structures are kept in memory
3874 instead of overwriting 'msg_type' and 'length' with 'body' data.
3877 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
3878 [Massimo Santin via Richard Levitte]
3880 *) Major restructuring to the underlying ENGINE code. This includes
3881 reduction of linker bloat, separation of pure "ENGINE" manipulation
3882 (initialisation, etc) from functionality dealing with implementations
3883 of specific crypto iterfaces. This change also introduces integrated
3884 support for symmetric ciphers and digest implementations - so ENGINEs
3885 can now accelerate these by providing EVP_CIPHER and EVP_MD
3886 implementations of their own. This is detailed in crypto/engine/README
3887 as it couldn't be adequately described here. However, there are a few
3888 API changes worth noting - some RSA, DSA, DH, and RAND functions that
3889 were changed in the original introduction of ENGINE code have now
3890 reverted back - the hooking from this code to ENGINE is now a good
3891 deal more passive and at run-time, operations deal directly with
3892 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
3893 dereferencing through an ENGINE pointer any more. Also, the ENGINE
3894 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
3895 they were not being used by the framework as there is no concept of a
3896 BIGNUM_METHOD and they could not be generalised to the new
3897 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
3898 ENGINE_cpy() has been removed as it cannot be consistently defined in
3902 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
3905 *) Change mkdef.pl to sort symbols that get the same entry number,
3906 and make sure the automatically generated functions ERR_load_*
3907 become part of libeay.num as well.
3910 *) New function SSL_renegotiate_pending(). This returns true once
3911 renegotiation has been requested (either SSL_renegotiate() call
3912 or HelloRequest/ClientHello receveived from the peer) and becomes
3913 false once a handshake has been completed.
3914 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
3915 sends a HelloRequest, but does not ensure that a handshake takes
3916 place. SSL_renegotiate_pending() is useful for checking if the
3917 client has followed the request.)
3920 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
3921 By default, clients may request session resumption even during
3922 renegotiation (if session ID contexts permit); with this option,
3923 session resumption is possible only in the first handshake.
3925 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
3926 more bits available for options that should not be part of
3927 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
3930 *) Add some demos for certificate and certificate request creation.
3933 *) Make maximum certificate chain size accepted from the peer application
3934 settable (SSL*_get/set_max_cert_list()), as proposed by
3935 "Douglas E. Engert" <deengert@anl.gov>.
3938 *) Add support for shared libraries for Unixware-7
3939 (Boyd Lynn Gerber <gerberb@zenez.com>).
3942 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
3943 be done prior to destruction. Use this to unload error strings from
3944 ENGINEs that load their own error strings. NB: This adds two new API
3945 functions to "get" and "set" this destroy handler in an ENGINE.
3948 *) Alter all existing ENGINE implementations (except "openssl" and
3949 "openbsd") to dynamically instantiate their own error strings. This
3950 makes them more flexible to be built both as statically-linked ENGINEs
3951 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
3952 Also, add stub code to each that makes building them as self-contained
3953 shared-libraries easier (see README.ENGINE).
3956 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
3957 implementations into applications that are completely implemented in
3958 self-contained shared-libraries. The "dynamic" ENGINE exposes control
3959 commands that can be used to configure what shared-library to load and
3960 to control aspects of the way it is handled. Also, made an update to
3961 the README.ENGINE file that brings its information up-to-date and
3962 provides some information and instructions on the "dynamic" ENGINE
3963 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
3966 *) Make it possible to unload ranges of ERR strings with a new
3967 "ERR_unload_strings" function.
3970 *) Add a copy() function to EVP_MD.
3973 *) Make EVP_MD routines take a context pointer instead of just the
3974 md_data void pointer.
3977 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
3978 that the digest can only process a single chunk of data
3979 (typically because it is provided by a piece of
3980 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
3981 is only going to provide a single chunk of data, and hence the
3982 framework needn't accumulate the data for oneshot drivers.
3985 *) As with "ERR", make it possible to replace the underlying "ex_data"
3986 functions. This change also alters the storage and management of global
3987 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
3988 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
3989 index counters. The API functions that use this state have been changed
3990 to take a "class_index" rather than pointers to the class's local STACK
3991 and counter, and there is now an API function to dynamically create new
3992 classes. This centralisation allows us to (a) plug a lot of the
3993 thread-safety problems that existed, and (b) makes it possible to clean
3994 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
3995 such data would previously have always leaked in application code and
3996 workarounds were in place to make the memory debugging turn a blind eye
3997 to it. Application code that doesn't use this new function will still
3998 leak as before, but their memory debugging output will announce it now
3999 rather than letting it slide.
4001 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
4002 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
4003 has a return value to indicate success or failure.
4006 *) Make it possible to replace the underlying "ERR" functions such that the
4007 global state (2 LHASH tables and 2 locks) is only used by the "default"
4008 implementation. This change also adds two functions to "get" and "set"
4009 the implementation prior to it being automatically set the first time
4010 any other ERR function takes place. Ie. an application can call "get",
4011 pass the return value to a module it has just loaded, and that module
4012 can call its own "set" function using that value. This means the
4013 module's "ERR" operations will use (and modify) the error state in the
4014 application and not in its own statically linked copy of OpenSSL code.
4017 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
4018 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
4019 the operation, and provides a more encapsulated way for external code
4020 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
4021 to use these functions rather than manually incrementing the counts.
4023 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
4026 *) Add EVP test program.
4029 *) Add symmetric cipher support to ENGINE. Expect the API to change!
4032 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
4033 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
4034 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
4035 These allow a CRL to be built without having to access X509_CRL fields
4036 directly. Modify 'ca' application to use new functions.
4039 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
4040 bug workarounds. Rollback attack detection is a security feature.
4041 The problem will only arise on OpenSSL servers when TLSv1 is not
4042 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
4043 Software authors not wanting to support TLSv1 will have special reasons
4044 for their choice and can explicitly enable this option.
4045 [Bodo Moeller, Lutz Jaenicke]
4047 *) Rationalise EVP so it can be extended: don't include a union of
4048 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
4049 (similar to those existing for EVP_CIPHER_CTX).
4054 EVP_MD_CTX_init(&md); /* new function call */
4055 EVP_DigestInit(&md, EVP_sha1());
4056 EVP_DigestUpdate(&md, in, len);
4057 EVP_DigestFinal(&md, out, NULL);
4058 EVP_MD_CTX_cleanup(&md); /* new function call */
4062 *) Make DES key schedule conform to the usual scheme, as well as
4063 correcting its structure. This means that calls to DES functions
4064 now have to pass a pointer to a des_key_schedule instead of a
4065 plain des_key_schedule (which was actually always a pointer
4068 des_key_schedule ks;
4070 des_set_key_checked(..., &ks);
4071 des_ncbc_encrypt(..., &ks, ...);
4073 (Note that a later change renames 'des_...' into 'DES_...'.)
4076 *) Initial reduction of linker bloat: the use of some functions, such as
4077 PEM causes large amounts of unused functions to be linked in due to
4078 poor organisation. For example pem_all.c contains every PEM function
4079 which has a knock on effect of linking in large amounts of (unused)
4080 ASN1 code. Grouping together similar functions and splitting unrelated
4081 functions prevents this.
4084 *) Cleanup of EVP macros.
4087 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
4088 correct _ecb suffix.
4091 *) Add initial OCSP responder support to ocsp application. The
4092 revocation information is handled using the text based index
4093 use by the ca application. The responder can either handle
4094 requests generated internally, supplied in files (for example
4095 via a CGI script) or using an internal minimal server.
4098 *) Add configuration choices to get zlib compression for TLS.
4101 *) Changes to Kerberos SSL for RFC 2712 compliance:
4102 1. Implemented real KerberosWrapper, instead of just using
4103 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
4104 2. Implemented optional authenticator field of KerberosWrapper.
4106 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
4107 and authenticator structs; see crypto/krb5/.
4109 Generalized Kerberos calls to support multiple Kerberos libraries.
4110 [Vern Staats <staatsvr@asc.hpc.mil>,
4111 Jeffrey Altman <jaltman@columbia.edu>
4112 via Richard Levitte]
4114 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
4115 already does with RSA. testdsa.h now has 'priv_key/pub_key'
4116 values for each of the key sizes rather than having just
4117 parameters (and 'speed' generating keys each time).
4120 *) Speed up EVP routines.
4123 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
4124 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
4125 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
4126 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
4128 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
4129 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
4130 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
4133 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
4135 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
4138 *) Added the OS2-EMX target.
4139 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
4141 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
4142 to support NCONF routines in extension code. New function CONF_set_nconf()
4143 to allow functions which take an NCONF to also handle the old LHASH
4144 structure: this means that the old CONF compatible routines can be
4145 retained (in particular wrt extensions) without having to duplicate the
4146 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
4149 *) Enhance the general user interface with mechanisms for inner control
4150 and with possibilities to have yes/no kind of prompts.
4153 *) Change all calls to low level digest routines in the library and
4154 applications to use EVP. Add missing calls to HMAC_cleanup() and
4155 don't assume HMAC_CTX can be copied using memcpy().
4156 [Verdon Walker <VWalker@novell.com>, Steve Henson]
4158 *) Add the possibility to control engines through control names but with
4159 arbitrary arguments instead of just a string.
4160 Change the key loaders to take a UI_METHOD instead of a callback
4161 function pointer. NOTE: this breaks binary compatibility with earlier
4162 versions of OpenSSL [engine].
4163 Adapt the nCipher code for these new conditions and add a card insertion
4167 *) Enhance the general user interface with mechanisms to better support
4168 dialog box interfaces, application-defined prompts, the possibility
4169 to use defaults (for example default passwords from somewhere else)
4170 and interrupts/cancellations.
4173 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
4174 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
4177 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
4178 tidy up some unnecessarily weird code in 'sk_new()').
4179 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
4181 *) Change the key loading routines for ENGINEs to use the same kind
4182 callback (pem_password_cb) as all other routines that need this
4186 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
4187 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
4188 than this minimum value is recommended.
4191 *) New random seeder for OpenVMS, using the system process statistics
4192 that are easily reachable.
4195 *) Windows apparently can't transparently handle global
4196 variables defined in DLLs. Initialisations such as:
4198 const ASN1_ITEM *it = &ASN1_INTEGER_it;
4200 wont compile. This is used by the any applications that need to
4201 declare their own ASN1 modules. This was fixed by adding the option
4202 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
4203 needed for static libraries under Win32.
4206 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
4207 setting of purpose and trust fields. New X509_STORE trust and
4208 purpose functions and tidy up setting in other SSL functions.
4211 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
4212 structure. These are inherited by X509_STORE_CTX when it is
4213 initialised. This allows various defaults to be set in the
4214 X509_STORE structure (such as flags for CRL checking and custom
4215 purpose or trust settings) for functions which only use X509_STORE_CTX
4216 internally such as S/MIME.
4218 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
4219 trust settings if they are not set in X509_STORE. This allows X509_STORE
4220 purposes and trust (in S/MIME for example) to override any set by default.
4222 Add command line options for CRL checking to smime, s_client and s_server
4226 *) Initial CRL based revocation checking. If the CRL checking flag(s)
4227 are set then the CRL is looked up in the X509_STORE structure and
4228 its validity and signature checked, then if the certificate is found
4229 in the CRL the verify fails with a revoked error.
4231 Various new CRL related callbacks added to X509_STORE_CTX structure.
4233 Command line options added to 'verify' application to support this.
4235 This needs some additional work, such as being able to handle multiple
4236 CRLs with different times, extension based lookup (rather than just
4237 by subject name) and ultimately more complete V2 CRL extension
4241 *) Add a general user interface API (crypto/ui/). This is designed
4242 to replace things like des_read_password and friends (backward
4243 compatibility functions using this new API are provided).
4244 The purpose is to remov
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