5 Changes between 1.0.1 and 1.1.0 [xx XXX xxxx]
7 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
10 *) New function DH_compute_key_padded() to compute a DH key and pad with
11 leading zeroes if needed: this complies with SP800-56A et al.
14 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
15 anything, incomplete, subject to change and largely untested at present.
18 *) Modify fipscanisteronly build option to only build the necessary object
19 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
22 *) Add experimental option FIPSSYMS to give all symbols in
23 fipscanister.o and FIPS or fips prefix. This will avoid
24 conflicts with future versions of OpenSSL. Add perl script
25 util/fipsas.pl to preprocess assembly language source files
26 and rename any affected symbols.
29 *) Add selftest checks and algorithm block of non-fips algorithms in
30 FIPS mode. Remove DES2 from selftests.
33 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
34 return internal method without any ENGINE dependencies. Add new
35 tiny fips sign and verify functions.
38 *) New build option no-ec2m to disable characteristic 2 code.
41 *) New build option "fipscanisteronly". This only builds fipscanister.o
42 and (currently) associated fips utilities. Uses the file Makefile.fips
43 instead of Makefile.org as the prototype.
46 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
47 Update fips_gcmtest to use IV generator.
50 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
51 setting output buffer to NULL. The *Final function must be
52 called although it will not retrieve any additional data. The tag
53 can be set or retrieved with a ctrl. The IV length is by default 12
54 bytes (96 bits) but can be set to an alternative value. If the IV
55 length exceeds the maximum IV length (currently 16 bytes) it cannot be
59 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
60 underlying do_cipher function handles all cipher semantics itself
61 including padding and finalisation. This is useful if (for example)
62 an ENGINE cipher handles block padding itself. The behaviour of
63 do_cipher is subtly changed if this flag is set: the return value
64 is the number of characters written to the output buffer (zero is
65 no longer an error code) or a negative error code. Also if the
66 input buffer is NULL and length 0 finalisation should be performed.
69 *) If a candidate issuer certificate is already part of the constructed
70 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
73 *) Improve forward-security support: add functions
75 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
76 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
78 for use by SSL/TLS servers; the callback function will be called whenever a
79 new session is created, and gets to decide whether the session may be
80 cached to make it resumable (return 0) or not (return 1). (As by the
81 SSL/TLS protocol specifications, the session_id sent by the server will be
82 empty to indicate that the session is not resumable; also, the server will
83 not generate RFC 4507 (RFC 5077) session tickets.)
85 A simple reasonable callback implementation is to return is_forward_secure.
86 This parameter will be set to 1 or 0 depending on the ciphersuite selected
87 by the SSL/TLS server library, indicating whether it can provide forward
89 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
91 *) Add Next Protocol Negotiation,
92 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
93 disabled with a no-npn flag to config or Configure. Code donated
95 [Adam Langley <agl@google.com> and Ben Laurie]
97 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
98 all platforms. Move ssize_t definition from e_os.h to the public
99 header file e_os2.h as it now appears in public header file cms.h
102 *) New function OPENSSL_gmtime_diff to find the difference in days
103 and seconds between two tm structures. This will be used to provide
104 additional functionality for ASN1_TIME.
107 *) New -sigopt option to the ca, req and x509 utilities. Additional
108 signature parameters can be passed using this option and in
112 *) Add RSA PSS signing function. This will generate and set the
113 appropriate AlgorithmIdentifiers for PSS based on those in the
114 corresponding EVP_MD_CTX structure. No application support yet.
117 *) Support for companion algorithm specific ASN1 signing routines.
118 New function ASN1_item_sign_ctx() signs a pre-initialised
119 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
120 the appropriate parameters.
123 *) Add new algorithm specific ASN1 verification initialisation function
124 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
125 handling will be the same no matter what EVP_PKEY_METHOD is used.
126 Add a PSS handler to support verification of PSS signatures: checked
127 against a number of sample certificates.
130 *) Add signature printing for PSS. Add PSS OIDs.
131 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
133 *) Add algorithm specific signature printing. An individual ASN1 method
134 can now print out signatures instead of the standard hex dump.
136 More complex signatures (e.g. PSS) can print out more meaningful
137 information. Include DSA version that prints out the signature
141 *) Add -trusted_first option which attempts to find certificates in the
142 trusted store even if an untrusted chain is also supplied.
145 *) Initial experimental support for explicitly trusted non-root CAs.
146 OpenSSL still tries to build a complete chain to a root but if an
147 intermediate CA has a trust setting included that is used. The first
148 setting is used: whether to trust or reject.
151 *) New -verify_name option in command line utilities to set verification
155 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
156 Add CMAC pkey methods.
159 *) Experiemental regnegotiation in s_server -www mode. If the client
160 browses /reneg connection is renegotiated. If /renegcert it is
161 renegotiated requesting a certificate.
164 *) Add an "external" session cache for debugging purposes to s_server. This
165 should help trace issues which normally are only apparent in deployed
166 multi-process servers.
169 *) Experiemental password based recipient info support for CMS library:
170 implementing RFC3211.
173 *) Split password based encryption into PBES2 and PBKDF2 functions. This
174 neatly separates the code into cipher and PBE sections and is required
175 for some algorithms that split PBES2 into separate pieces (such as
179 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
180 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
181 BIO_set_cipher() and some obscure PEM functions were changed so they
182 can now return an error. The RAND changes required a change to the
183 RAND_METHOD structure.
186 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
187 a gcc attribute to warn if the result of a function is ignored. This
188 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
189 whose return value is often ignored.
192 Changes between 1.0.0d and 1.0.1 [xx XXX xxxx]
194 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
197 *) Add EC_GFp_nistp224_method(), a 64-bit optimized implementation for
198 elliptic curve NIST-P224 with constant-time single point multiplication on
199 typical inputs. EC_GROUP_new_by_curve_name() will automatically use this
200 (while EC_GROUP_new_curve_GFp() currently won't and prefers the more
201 flexible implementations).
203 The implementation requires support for the nonstandard type __uint128_t,
204 and so is disabled by default. To include this in your build of OpenSSL,
205 use -DEC_NISTP224_64_GCC_128 on the Configure (or config) command line,
206 and run "make depend" (or "make update").
207 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
209 *) Permit abbreviated handshakes when renegotiating using the function
210 SSL_renegotiate_abbreviated().
211 [Robin Seggelmann <seggelmann@fh-muenster.de>]
213 *) Add call to ENGINE_register_all_complete() to
214 ENGINE_load_builtin_engines(), so some implementations get used
215 automatically instead of needing explicit application support.
218 *) Add support for TLS key exporter as described in RFC5705.
219 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
221 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
222 a few changes are required:
224 Add SSL_OP_NO_TLSv1_1 flag.
226 Update version checking logic to handle version 1.1.
227 Add explicit IV handling (ported from DTLS code).
228 Add command line options to s_client/s_server.
231 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
233 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
234 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
236 *) Fix bug in string printing code: if *any* escaping is enabled we must
237 escape the escape character (backslash) or the resulting string is
241 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
243 *) Disable code workaround for ancient and obsolete Netscape browsers
244 and servers: an attacker can use it in a ciphersuite downgrade attack.
245 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
248 *) Fixed J-PAKE implementation error, originally discovered by
249 Sebastien Martini, further info and confirmation from Stefan
250 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
253 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
255 *) Fix extension code to avoid race conditions which can result in a buffer
256 overrun vulnerability: resumed sessions must not be modified as they can
257 be shared by multiple threads. CVE-2010-3864
260 *) Fix WIN32 build system to correctly link an ENGINE directory into
264 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
266 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
268 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
270 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
272 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
273 context. The operation can be customised via the ctrl mechanism in
274 case ENGINEs want to include additional functionality.
277 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
280 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
281 output hashes compatible with older versions of OpenSSL.
282 [Willy Weisz <weisz@vcpc.univie.ac.at>]
284 *) Fix compression algorithm handling: if resuming a session use the
285 compression algorithm of the resumed session instead of determining
286 it from client hello again. Don't allow server to change algorithm.
289 *) Add load_crls() function to apps tidying load_certs() too. Add option
290 to verify utility to allow additional CRLs to be included.
293 *) Update OCSP request code to permit adding custom headers to the request:
294 some responders need this.
297 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
299 [Julia Lawall <julia@diku.dk>]
301 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
302 needlessly dereferenced structures, used obsolete functions and
303 didn't handle all updated verify codes correctly.
306 *) Disable MD2 in the default configuration.
309 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
310 indicate the initial BIO being pushed or popped. This makes it possible
311 to determine whether the BIO is the one explicitly called or as a result
312 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
313 it handles reference counts correctly and doesn't zero out the I/O bio
314 when it is not being explicitly popped. WARNING: applications which
315 included workarounds for the old buggy behaviour will need to be modified
316 or they could free up already freed BIOs.
319 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
320 renaming to all platforms (within the 0.9.8 branch, this was
321 done conditionally on Netware platforms to avoid a name clash).
322 [Guenter <lists@gknw.net>]
324 *) Add ECDHE and PSK support to DTLS.
325 [Michael Tuexen <tuexen@fh-muenster.de>]
327 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
331 *) Add "missing" function EVP_MD_flags() (without this the only way to
332 retrieve a digest flags is by accessing the structure directly. Update
333 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
334 or cipher is registered as in the "from" argument. Print out all
335 registered digests in the dgst usage message instead of manually
336 attempting to work them out.
339 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
340 this allows the use of compression and extensions. Change default cipher
341 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
342 by default unless an application cipher string requests it.
345 *) Alter match criteria in PKCS12_parse(). It used to try to use local
346 key ids to find matching certificates and keys but some PKCS#12 files
347 don't follow the (somewhat unwritten) rules and this strategy fails.
348 Now just gather all certificates together and the first private key
349 then look for the first certificate that matches the key.
352 *) Support use of registered digest and cipher names for dgst and cipher
353 commands instead of having to add each one as a special case. So now
360 openssl dgst -sha256 foo
362 and this works for ENGINE based algorithms too.
366 *) Update Gost ENGINE to support parameter files.
367 [Victor B. Wagner <vitus@cryptocom.ru>]
369 *) Support GeneralizedTime in ca utility.
370 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
372 *) Enhance the hash format used for certificate directory links. The new
373 form uses the canonical encoding (meaning equivalent names will work
374 even if they aren't identical) and uses SHA1 instead of MD5. This form
375 is incompatible with the older format and as a result c_rehash should
376 be used to rebuild symbolic links.
379 *) Make PKCS#8 the default write format for private keys, replacing the
380 traditional format. This form is standardised, more secure and doesn't
381 include an implicit MD5 dependency.
384 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
385 committed to OpenSSL should pass this lot as a minimum.
388 *) Add session ticket override functionality for use by EAP-FAST.
389 [Jouni Malinen <j@w1.fi>]
391 *) Modify HMAC functions to return a value. Since these can be implemented
392 in an ENGINE errors can occur.
395 *) Type-checked OBJ_bsearch_ex.
398 *) Type-checked OBJ_bsearch. Also some constification necessitated
399 by type-checking. Still to come: TXT_DB, bsearch(?),
400 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
404 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
405 seconds to a tm structure directly, instead of going through OS
406 specific date routines. This avoids any issues with OS routines such
407 as the year 2038 bug. New *_adj() functions for ASN1 time structures
408 and X509_time_adj_ex() to cover the extended range. The existing
409 X509_time_adj() is still usable and will no longer have any date issues.
412 *) Delta CRL support. New use deltas option which will attempt to locate
413 and search any appropriate delta CRLs available.
415 This work was sponsored by Google.
418 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
419 code and add additional score elements. Validate alternate CRL paths
420 as part of the CRL checking and indicate a new error "CRL path validation
421 error" in this case. Applications wanting additional details can use
422 the verify callback and check the new "parent" field. If this is not
423 NULL CRL path validation is taking place. Existing applications wont
424 see this because it requires extended CRL support which is off by
427 This work was sponsored by Google.
430 *) Support for freshest CRL extension.
432 This work was sponsored by Google.
435 *) Initial indirect CRL support. Currently only supported in the CRLs
436 passed directly and not via lookup. Process certificate issuer
437 CRL entry extension and lookup CRL entries by bother issuer name
438 and serial number. Check and process CRL issuer entry in IDP extension.
440 This work was sponsored by Google.
443 *) Add support for distinct certificate and CRL paths. The CRL issuer
444 certificate is validated separately in this case. Only enabled if
445 an extended CRL support flag is set: this flag will enable additional
446 CRL functionality in future.
448 This work was sponsored by Google.
451 *) Add support for policy mappings extension.
453 This work was sponsored by Google.
456 *) Fixes to pathlength constraint, self issued certificate handling,
457 policy processing to align with RFC3280 and PKITS tests.
459 This work was sponsored by Google.
462 *) Support for name constraints certificate extension. DN, email, DNS
463 and URI types are currently supported.
465 This work was sponsored by Google.
468 *) To cater for systems that provide a pointer-based thread ID rather
469 than numeric, deprecate the current numeric thread ID mechanism and
470 replace it with a structure and associated callback type. This
471 mechanism allows a numeric "hash" to be extracted from a thread ID in
472 either case, and on platforms where pointers are larger than 'long',
473 mixing is done to help ensure the numeric 'hash' is usable even if it
474 can't be guaranteed unique. The default mechanism is to use "&errno"
475 as a pointer-based thread ID to distinguish between threads.
477 Applications that want to provide their own thread IDs should now use
478 CRYPTO_THREADID_set_callback() to register a callback that will call
479 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
481 Note that ERR_remove_state() is now deprecated, because it is tied
482 to the assumption that thread IDs are numeric. ERR_remove_state(0)
483 to free the current thread's error state should be replaced by
484 ERR_remove_thread_state(NULL).
486 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
487 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
488 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
489 application was previously providing a numeric thread callback that
490 was inappropriate for distinguishing threads, then uniqueness might
491 have been obtained with &errno that happened immediately in the
492 intermediate development versions of OpenSSL; this is no longer the
493 case, the numeric thread callback will now override the automatic use
495 [Geoff Thorpe, with help from Bodo Moeller]
497 *) Initial support for different CRL issuing certificates. This covers a
498 simple case where the self issued certificates in the chain exist and
499 the real CRL issuer is higher in the existing chain.
501 This work was sponsored by Google.
504 *) Removed effectively defunct crypto/store from the build.
507 *) Revamp of STACK to provide stronger type-checking. Still to come:
508 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
509 ASN1_STRING, CONF_VALUE.
512 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
513 RAM on SSL connections. This option can save about 34k per idle SSL.
516 *) Revamp of LHASH to provide stronger type-checking. Still to come:
517 STACK, TXT_DB, bsearch, qsort.
520 *) Initial support for Cryptographic Message Syntax (aka CMS) based
521 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
522 support for data, signedData, compressedData, digestedData and
523 encryptedData, envelopedData types included. Scripts to check against
524 RFC4134 examples draft and interop and consistency checks of many
525 content types and variants.
528 *) Add options to enc utility to support use of zlib compression BIO.
531 *) Extend mk1mf to support importing of options and assembly language
532 files from Configure script, currently only included in VC-WIN32.
533 The assembly language rules can now optionally generate the source
534 files from the associated perl scripts.
537 *) Implement remaining functionality needed to support GOST ciphersuites.
538 Interop testing has been performed using CryptoPro implementations.
539 [Victor B. Wagner <vitus@cryptocom.ru>]
541 *) s390x assembler pack.
544 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
548 *) Implement Opaque PRF Input TLS extension as specified in
549 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
550 official specification yet and no extension type assignment by
551 IANA exists, this extension (for now) will have to be explicitly
552 enabled when building OpenSSL by providing the extension number
553 to use. For example, specify an option
555 -DTLSEXT_TYPE_opaque_prf_input=0x9527
557 to the "config" or "Configure" script to enable the extension,
558 assuming extension number 0x9527 (which is a completely arbitrary
559 and unofficial assignment based on the MD5 hash of the Internet
560 Draft). Note that by doing so, you potentially lose
561 interoperability with other TLS implementations since these might
562 be using the same extension number for other purposes.
564 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
565 opaque PRF input value to use in the handshake. This will create
566 an interal copy of the length-'len' string at 'src', and will
567 return non-zero for success.
569 To get more control and flexibility, provide a callback function
572 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
573 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
577 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
580 Callback function 'cb' will be called in handshakes, and is
581 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
582 Argument 'arg' is for application purposes (the value as given to
583 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
584 be provided to the callback function). The callback function
585 has to return non-zero to report success: usually 1 to use opaque
586 PRF input just if possible, or 2 to enforce use of the opaque PRF
587 input. In the latter case, the library will abort the handshake
588 if opaque PRF input is not successfully negotiated.
590 Arguments 'peerinput' and 'len' given to the callback function
591 will always be NULL and 0 in the case of a client. A server will
592 see the client's opaque PRF input through these variables if
593 available (NULL and 0 otherwise). Note that if the server
594 provides an opaque PRF input, the length must be the same as the
595 length of the client's opaque PRF input.
597 Note that the callback function will only be called when creating
598 a new session (session resumption can resume whatever was
599 previously negotiated), and will not be called in SSL 2.0
600 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
601 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
602 for applications that need to enforce opaque PRF input.
606 *) Update ssl code to support digests other than SHA1+MD5 for handshake
609 [Victor B. Wagner <vitus@cryptocom.ru>]
611 *) Add RFC4507 support to OpenSSL. This includes the corrections in
612 RFC4507bis. The encrypted ticket format is an encrypted encoded
613 SSL_SESSION structure, that way new session features are automatically
616 If a client application caches session in an SSL_SESSION structure
617 support is transparent because tickets are now stored in the encoded
620 The SSL_CTX structure automatically generates keys for ticket
621 protection in servers so again support should be possible
622 with no application modification.
624 If a client or server wishes to disable RFC4507 support then the option
625 SSL_OP_NO_TICKET can be set.
627 Add a TLS extension debugging callback to allow the contents of any client
628 or server extensions to be examined.
630 This work was sponsored by Google.
633 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
634 OpenSSL should now compile cleanly on gcc 4.2
635 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
637 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
638 support including streaming MAC support: this is required for GOST
640 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
642 *) Add option -stream to use PKCS#7 streaming in smime utility. New
643 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
644 to output in BER and PEM format.
647 *) Experimental support for use of HMAC via EVP_PKEY interface. This
648 allows HMAC to be handled via the EVP_DigestSign*() interface. The
649 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
650 ENGINE support for HMAC keys which are unextractable. New -mac and
651 -macopt options to dgst utility.
654 *) New option -sigopt to dgst utility. Update dgst to use
655 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
656 alternative signing paramaters such as X9.31 or PSS in the dgst
660 *) Change ssl_cipher_apply_rule(), the internal function that does
661 the work each time a ciphersuite string requests enabling
662 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
663 removing ("!foo+bar") a class of ciphersuites: Now it maintains
664 the order of disabled ciphersuites such that those ciphersuites
665 that most recently went from enabled to disabled not only stay
666 in order with respect to each other, but also have higher priority
667 than other disabled ciphersuites the next time ciphersuites are
670 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
671 the same ciphersuites as with "HIGH" alone, but in a specific
672 order where the PSK ciphersuites come first (since they are the
673 most recently disabled ciphersuites when "HIGH" is parsed).
675 Also, change ssl_create_cipher_list() (using this new
676 funcionality) such that between otherwise identical
677 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
681 *) Change ssl_create_cipher_list() so that it automatically
682 arranges the ciphersuites in reasonable order before starting
683 to process the rule string. Thus, the definition for "DEFAULT"
684 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
685 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
686 This makes it much easier to arrive at a reasonable default order
687 in applications for which anonymous ciphers are OK (meaning
688 that you can't actually use DEFAULT).
689 [Bodo Moeller; suggested by Victor Duchovni]
691 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
692 processing) into multiple integers instead of setting
693 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
694 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
695 (These masks as well as the individual bit definitions are hidden
696 away into the non-exported interface ssl/ssl_locl.h, so this
697 change to the definition of the SSL_CIPHER structure shouldn't
698 affect applications.) This give us more bits for each of these
699 categories, so there is no longer a need to coagulate AES128 and
700 AES256 into a single algorithm bit, and to coagulate Camellia128
701 and Camellia256 into a single algorithm bit, which has led to all
704 Thus, among other things, the kludge introduced in 0.9.7m and
705 0.9.8e for masking out AES256 independently of AES128 or masking
706 out Camellia256 independently of AES256 is not needed here in 0.9.9.
708 With the change, we also introduce new ciphersuite aliases that
709 so far were missing: "AES128", "AES256", "CAMELLIA128", and
713 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
714 Use the leftmost N bytes of the signature input if the input is
715 larger than the prime q (with N being the size in bytes of q).
718 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
719 it yet and it is largely untested.
722 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
725 *) Initial incomplete changes to avoid need for function casts in OpenSSL
726 some compilers (gcc 4.2 and later) reject their use. Safestack is
727 reimplemented. Update ASN1 to avoid use of legacy functions.
730 *) Win32/64 targets are linked with Winsock2.
733 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
734 to external functions. This can be used to increase CRL handling
735 efficiency especially when CRLs are very large by (for example) storing
736 the CRL revoked certificates in a database.
739 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
740 new CRLs added to a directory can be used. New command line option
741 -verify_return_error to s_client and s_server. This causes real errors
742 to be returned by the verify callback instead of carrying on no matter
743 what. This reflects the way a "real world" verify callback would behave.
746 *) GOST engine, supporting several GOST algorithms and public key formats.
747 Kindly donated by Cryptocom.
750 *) Partial support for Issuing Distribution Point CRL extension. CRLs
751 partitioned by DP are handled but no indirect CRL or reason partitioning
752 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
753 selected via a scoring technique which handles IDP and AKID in CRLs.
756 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
757 will ultimately be used for all verify operations: this will remove the
758 X509_STORE dependency on certificate verification and allow alternative
759 lookup methods. X509_STORE based implementations of these two callbacks.
762 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
763 Modify get_crl() to find a valid (unexpired) CRL if possible.
766 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
767 this would be called X509_CRL_cmp() but that name is already used by
768 a function that just compares CRL issuer names. Cache several CRL
769 extensions in X509_CRL structure and cache CRLDP in X509.
772 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
773 this maps equivalent X509_NAME structures into a consistent structure.
774 Name comparison can then be performed rapidly using memcmp().
777 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
781 *) Allow digests to supply their own micalg string for S/MIME type using
782 the ctrl EVP_MD_CTRL_MICALG.
785 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
786 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
787 ctrl. It can then customise the structure before and/or after signing
791 *) New function OBJ_add_sigid() to allow application defined signature OIDs
792 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
793 to free up any added signature OIDs.
796 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
797 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
798 digest and cipher tables. New options added to openssl utility:
799 list-message-digest-algorithms and list-cipher-algorithms.
802 *) Change the array representation of binary polynomials: the list
803 of degrees of non-zero coefficients is now terminated with -1.
804 Previously it was terminated with 0, which was also part of the
805 value; thus, the array representation was not applicable to
806 polynomials where t^0 has coefficient zero. This change makes
807 the array representation useful in a more general context.
810 *) Various modifications and fixes to SSL/TLS cipher string
811 handling. For ECC, the code now distinguishes between fixed ECDH
812 with RSA certificates on the one hand and with ECDSA certificates
813 on the other hand, since these are separate ciphersuites. The
814 unused code for Fortezza ciphersuites has been removed.
816 For consistency with EDH, ephemeral ECDH is now called "EECDH"
817 (not "ECDHE"). For consistency with the code for DH
818 certificates, use of ECDH certificates is now considered ECDH
819 authentication, not RSA or ECDSA authentication (the latter is
820 merely the CA's signing algorithm and not actively used in the
823 The temporary ciphersuite alias "ECCdraft" is no longer
824 available, and ECC ciphersuites are no longer excluded from "ALL"
825 and "DEFAULT". The following aliases now exist for RFC 4492
826 ciphersuites, most of these by analogy with the DH case:
828 kECDHr - ECDH cert, signed with RSA
829 kECDHe - ECDH cert, signed with ECDSA
830 kECDH - ECDH cert (signed with either RSA or ECDSA)
831 kEECDH - ephemeral ECDH
832 ECDH - ECDH cert or ephemeral ECDH
838 AECDH - anonymous ECDH
839 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
843 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
844 Use correct micalg parameters depending on digest(s) in signed message.
847 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
848 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
851 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
852 an engine to register a method. Add ENGINE lookups for methods and
853 functional reference processing.
856 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
857 EVP_{Sign,Verify}* which allow an application to customise the signature
861 *) New -resign option to smime utility. This adds one or more signers
862 to an existing PKCS#7 signedData structure. Also -md option to use an
863 alternative message digest algorithm for signing.
866 *) Tidy up PKCS#7 routines and add new functions to make it easier to
867 create PKCS7 structures containing multiple signers. Update smime
868 application to support multiple signers.
871 *) New -macalg option to pkcs12 utility to allow setting of an alternative
875 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
876 Reorganize PBE internals to lookup from a static table using NIDs,
877 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
878 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
879 PRF which will be automatically used with PBES2.
882 *) Replace the algorithm specific calls to generate keys in "req" with the
886 *) Update PKCS#7 enveloped data routines to use new API. This is now
887 supported by any public key method supporting the encrypt operation. A
888 ctrl is added to allow the public key algorithm to examine or modify
889 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
893 *) Add a ctrl to asn1 method to allow a public key algorithm to express
894 a default digest type to use. In most cases this will be SHA1 but some
895 algorithms (such as GOST) need to specify an alternative digest. The
896 return value indicates how strong the prefernce is 1 means optional and
897 2 is mandatory (that is it is the only supported type). Modify
898 ASN1_item_sign() to accept a NULL digest argument to indicate it should
899 use the default md. Update openssl utilities to use the default digest
900 type for signing if it is not explicitly indicated.
903 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
904 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
905 signing method from the key type. This effectively removes the link
906 between digests and public key types.
909 *) Add an OID cross reference table and utility functions. Its purpose is to
910 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
911 rsaEncryption. This will allow some of the algorithm specific hackery
912 needed to use the correct OID to be removed.
915 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
916 structures for PKCS7_sign(). They are now set up by the relevant public
920 *) Add provisional EC pkey method with support for ECDSA and ECDH.
923 *) Add support for key derivation (agreement) in the API, DH method and
927 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
928 public and private key formats. As a side effect these add additional
929 command line functionality not previously available: DSA signatures can be
930 generated and verified using pkeyutl and DH key support and generation in
935 [Oliver Tappe <zooey@hirschkaefer.de>]
937 *) New make target "install_html_docs" installs HTML renditions of the
939 [Oliver Tappe <zooey@hirschkaefer.de>]
941 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
942 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
943 support key and parameter generation and add initial key generation
944 functionality for RSA.
947 *) Add functions for main EVP_PKEY_method operations. The undocumented
948 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
949 EVP_PKEY_{encrypt,decrypt}_old.
952 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
953 key API, doesn't do much yet.
956 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
957 public key algorithms. New option to openssl utility:
958 "list-public-key-algorithms" to print out info.
961 *) Implement the Supported Elliptic Curves Extension for
962 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
965 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
966 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
969 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
970 utilities such as rsa, dsa, dsaparam etc except they process any key
974 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
975 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
976 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
980 *) Initial support for pluggable public key ASN1.
981 De-spaghettify the public key ASN1 handling. Move public and private
982 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
983 algorithm specific handling to a single module within the relevant
984 algorithm directory. Add functions to allow (near) opaque processing
985 of public and private key structures.
988 *) Implement the Supported Point Formats Extension for
989 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
992 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
993 for the psk identity [hint] and the psk callback functions to the
994 SSL_SESSION, SSL and SSL_CTX structure.
997 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1001 SSL_CTX_use_psk_identity_hint
1002 SSL_get_psk_identity_hint
1003 SSL_get_psk_identity
1004 SSL_use_psk_identity_hint
1006 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1008 *) Add RFC 3161 compliant time stamp request creation, response generation
1009 and response verification functionality.
1010 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1012 *) Add initial support for TLS extensions, specifically for the server_name
1013 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1014 have new members for a host name. The SSL data structure has an
1015 additional member SSL_CTX *initial_ctx so that new sessions can be
1016 stored in that context to allow for session resumption, even after the
1017 SSL has been switched to a new SSL_CTX in reaction to a client's
1018 server_name extension.
1020 New functions (subject to change):
1022 SSL_get_servername()
1023 SSL_get_servername_type()
1026 New CTRL codes and macros (subject to change):
1028 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1029 - SSL_CTX_set_tlsext_servername_callback()
1030 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1031 - SSL_CTX_set_tlsext_servername_arg()
1032 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1034 openssl s_client has a new '-servername ...' option.
1036 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1037 '-key2 ...', '-servername_fatal' (subject to change). This allows
1038 testing the HostName extension for a specific single host name ('-cert'
1039 and '-key' remain fallbacks for handshakes without HostName
1040 negotiation). If the unrecogninzed_name alert has to be sent, this by
1041 default is a warning; it becomes fatal with the '-servername_fatal'
1044 [Peter Sylvester, Remy Allais, Christophe Renou]
1046 *) Whirlpool hash implementation is added.
1049 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1050 bn(64,32). Because of instruction set limitations it doesn't have
1051 any negative impact on performance. This was done mostly in order
1052 to make it possible to share assembler modules, such as bn_mul_mont
1053 implementations, between 32- and 64-bit builds without hassle.
1056 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1057 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1061 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1062 dedicated Montgomery multiplication procedure, is introduced.
1063 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1064 "64-bit" performance on certain 32-bit targets.
1067 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1068 in SSL structures. New SSL ctrl to set maximum send fragment size.
1069 Save memory by seeting the I/O buffer sizes dynamically instead of
1070 using the maximum available value.
1073 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1074 in addition to the text details.
1077 *) Very, very preliminary EXPERIMENTAL support for printing of general
1078 ASN1 structures. This currently produces rather ugly output and doesn't
1079 handle several customised structures at all.
1082 *) Integrated support for PVK file format and some related formats such
1083 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1084 these in the 'rsa' and 'dsa' utilities.
1087 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1090 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1091 place for the (very old) "NETSCAPE" format certificates which are now
1092 handled using new ASN1 code equivalents.
1095 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1096 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1097 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1100 *) Modify CRL distribution points extension code to print out previously
1101 unsupported fields. Enhance extension setting code to allow setting of
1105 *) Add print and set support for Issuing Distribution Point CRL extension.
1108 *) Change 'Configure' script to enable Camellia by default.
1111 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1113 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1114 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1116 *) Fix bug in string printing code: if *any* escaping is enabled we must
1117 escape the escape character (backslash) or the resulting string is
1121 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1123 *) Disable code workaround for ancient and obsolete Netscape browsers
1124 and servers: an attacker can use it in a ciphersuite downgrade attack.
1125 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1128 *) Fixed J-PAKE implementation error, originally discovered by
1129 Sebastien Martini, further info and confirmation from Stefan
1130 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1133 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1135 *) Fix extension code to avoid race conditions which can result in a buffer
1136 overrun vulnerability: resumed sessions must not be modified as they can
1137 be shared by multiple threads. CVE-2010-3864
1140 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1143 *) Don't reencode certificate when calculating signature: cache and use
1144 the original encoding instead. This makes signature verification of
1145 some broken encodings work correctly.
1148 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1149 is also one of the inputs.
1150 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1152 *) Don't repeatedly append PBE algorithms to table if they already exist.
1153 Sort table on each new add. This effectively makes the table read only
1154 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1158 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1160 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1163 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1164 access or freeing data twice (CVE-2010-0742)
1165 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1167 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1168 common in certificates and some applications which only call
1169 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1173 Reduce copying into .apps and .test in makevms.com
1174 Don't try to use blank CA certificate in CA.com
1175 Allow use of C files from original directories in maketests.com
1176 [Steven M. Schweda" <sms@antinode.info>]
1178 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1180 *) When rejecting SSL/TLS records due to an incorrect version number, never
1181 update s->server with a new major version number. As of
1182 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1183 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1184 the previous behavior could result in a read attempt at NULL when
1185 receiving specific incorrect SSL/TLS records once record payload
1186 protection is active. (CVE-2010-0740)
1187 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1189 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1190 could be crashed if the relevant tables were not present (e.g. chrooted).
1191 [Tomas Hoger <thoger@redhat.com>]
1193 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1195 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1196 [Martin Olsson, Neel Mehta]
1198 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1199 accommodate for stack sorting, always a write lock!).
1202 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1203 excessive delays in the RAND_poll(): over a minute. As a workaround
1204 include a time check in the inner Heap32Next loop too.
1207 *) The code that handled flushing of data in SSL/TLS originally used the
1208 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1209 the problem outlined in PR#1949. The fix suggested there however can
1210 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1211 of Apache). So instead simplify the code to flush unconditionally.
1212 This should be fine since flushing with no data to flush is a no op.
1215 *) Handle TLS versions 2.0 and later properly and correctly use the
1216 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1217 off ancient servers have a habit of sticking around for a while...
1220 *) Modify compression code so it frees up structures without using the
1221 ex_data callbacks. This works around a problem where some applications
1222 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1223 restarting) then use compression (e.g. SSL with compression) later.
1224 This results in significant per-connection memory leaks and
1225 has caused some security issues including CVE-2008-1678 and
1229 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1230 change when encrypting or decrypting.
1233 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1234 connect and renegotiate with servers which do not support RI.
1235 Until RI is more widely deployed this option is enabled by default.
1238 *) Add "missing" ssl ctrls to clear options and mode.
1241 *) If client attempts to renegotiate and doesn't support RI respond with
1242 a no_renegotiation alert as required by RFC5746. Some renegotiating
1243 TLS clients will continue a connection gracefully when they receive
1244 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1245 waiting for a server hello which it will never receive. Now we treat a
1246 received no_renegotiation alert as a fatal error. This is because
1247 applications requesting a renegotiation might well expect it to succeed
1248 and would have no code in place to handle the server denying it so the
1249 only safe thing to do is to terminate the connection.
1252 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1253 peer supports secure renegotiation and 0 otherwise. Print out peer
1254 renegotiation support in s_client/s_server.
1257 *) Replace the highly broken and deprecated SPKAC certification method with
1258 the updated NID creation version. This should correctly handle UTF8.
1261 *) Implement RFC5746. Re-enable renegotiation but require the extension
1262 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1263 turns out to be a bad idea. It has been replaced by
1264 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1265 SSL_CTX_set_options(). This is really not recommended unless you
1266 know what you are doing.
1267 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1269 *) Fixes to stateless session resumption handling. Use initial_ctx when
1270 issuing and attempting to decrypt tickets in case it has changed during
1271 servername handling. Use a non-zero length session ID when attempting
1272 stateless session resumption: this makes it possible to determine if
1273 a resumption has occurred immediately after receiving server hello
1274 (several places in OpenSSL subtly assume this) instead of later in
1278 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1279 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1280 fixes for a few places where the return code is not checked
1282 [Julia Lawall <julia@diku.dk>]
1284 *) Add --strict-warnings option to Configure script to include devteam
1285 warnings in other configurations.
1288 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1289 makes it possible to install openssl libraries in locations which
1290 have names other than "lib", for example "/usr/lib64" which some
1292 [Steve Henson, based on patch from Jeremy Utley]
1294 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1295 X690 8.9.12 and can produce some misleading textual output of OIDs.
1296 [Steve Henson, reported by Dan Kaminsky]
1298 *) Delete MD2 from algorithm tables. This follows the recommendation in
1299 several standards that it is not used in new applications due to
1300 several cryptographic weaknesses. For binary compatibility reasons
1301 the MD2 API is still compiled in by default.
1304 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1308 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1309 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1311 [Guenter <lists@gknw.net>]
1313 *) Fix the server certificate chain building code to use X509_verify_cert(),
1314 it used to have an ad-hoc builder which was unable to cope with anything
1315 other than a simple chain.
1316 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1318 *) Don't check self signed certificate signatures in X509_verify_cert()
1319 by default (a flag can override this): it just wastes time without
1320 adding any security. As a useful side effect self signed root CAs
1321 with non-FIPS digests are now usable in FIPS mode.
1324 *) In dtls1_process_out_of_seq_message() the check if the current message
1325 is already buffered was missing. For every new message was memory
1326 allocated, allowing an attacker to perform an denial of service attack
1327 with sending out of seq handshake messages until there is no memory
1328 left. Additionally every future messege was buffered, even if the
1329 sequence number made no sense and would be part of another handshake.
1330 So only messages with sequence numbers less than 10 in advance will be
1331 buffered. (CVE-2009-1378)
1332 [Robin Seggelmann, discovered by Daniel Mentz]
1334 *) Records are buffered if they arrive with a future epoch to be
1335 processed after finishing the corresponding handshake. There is
1336 currently no limitation to this buffer allowing an attacker to perform
1337 a DOS attack with sending records with future epochs until there is no
1338 memory left. This patch adds the pqueue_size() function to detemine
1339 the size of a buffer and limits the record buffer to 100 entries.
1341 [Robin Seggelmann, discovered by Daniel Mentz]
1343 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1344 parent structure is freed. (CVE-2009-1379)
1347 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1348 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1351 [Ilya O. <vrghost@gmail.com>]
1353 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1355 *) Disable renegotiation completely - this fixes a severe security
1356 problem (CVE-2009-3555) at the cost of breaking all
1357 renegotiation. Renegotiation can be re-enabled by setting
1358 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1359 run-time. This is really not recommended unless you know what
1363 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1365 *) Don't set val to NULL when freeing up structures, it is freed up by
1366 underlying code. If sizeof(void *) > sizeof(long) this can result in
1367 zeroing past the valid field. (CVE-2009-0789)
1368 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1370 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1371 checked correctly. This would allow some invalid signed attributes to
1372 appear to verify correctly. (CVE-2009-0591)
1373 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1375 *) Reject UniversalString and BMPString types with invalid lengths. This
1376 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1377 a legal length. (CVE-2009-0590)
1380 *) Set S/MIME signing as the default purpose rather than setting it
1381 unconditionally. This allows applications to override it at the store
1385 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1386 to handle some structures.
1389 *) Improve efficiency of mem_gets: don't search whole buffer each time
1391 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1393 *) New -hex option for openssl rand.
1396 *) Print out UTF8String and NumericString when parsing ASN1.
1399 *) Support NumericString type for name components.
1402 *) Allow CC in the environment to override the automatically chosen
1403 compiler. Note that nothing is done to ensure flags work with the
1407 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1409 *) Properly check EVP_VerifyFinal() and similar return values
1411 [Ben Laurie, Bodo Moeller, Google Security Team]
1413 *) Enable TLS extensions by default.
1416 *) Allow the CHIL engine to be loaded, whether the application is
1417 multithreaded or not. (This does not release the developer from the
1418 obligation to set up the dynamic locking callbacks.)
1419 [Sander Temme <sander@temme.net>]
1421 *) Use correct exit code if there is an error in dgst command.
1422 [Steve Henson; problem pointed out by Roland Dirlewanger]
1424 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1425 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1428 *) Add experimental JPAKE support, including demo authentication in
1429 s_client and s_server.
1432 *) Set the comparison function in v3_addr_canonize().
1433 [Rob Austein <sra@hactrn.net>]
1435 *) Add support for XMPP STARTTLS in s_client.
1436 [Philip Paeps <philip@freebsd.org>]
1438 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1439 to ensure that even with this option, only ciphersuites in the
1440 server's preference list will be accepted. (Note that the option
1441 applies only when resuming a session, so the earlier behavior was
1442 just about the algorithm choice for symmetric cryptography.)
1445 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1447 *) Fix NULL pointer dereference if a DTLS server received
1448 ChangeCipherSpec as first record (CVE-2009-1386).
1451 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1452 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1455 *) The fix in 0.9.8c that supposedly got rid of unsafe
1456 double-checked locking was incomplete for RSA blinding,
1457 addressing just one layer of what turns out to have been
1458 doubly unsafe triple-checked locking.
1460 So now fix this for real by retiring the MONT_HELPER macro
1461 in crypto/rsa/rsa_eay.c.
1463 [Bodo Moeller; problem pointed out by Marius Schilder]
1465 *) Various precautionary measures:
1467 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1469 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1470 (NB: This would require knowledge of the secret session ticket key
1471 to exploit, in which case you'd be SOL either way.)
1473 - Change bn_nist.c so that it will properly handle input BIGNUMs
1474 outside the expected range.
1476 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1479 [Neel Mehta, Bodo Moeller]
1481 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1482 the load fails. Useful for distros.
1483 [Ben Laurie and the FreeBSD team]
1485 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1488 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1491 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1493 This work was sponsored by Logica.
1496 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1497 keystores. Support for SSL/TLS client authentication too.
1498 Not compiled unless enable-capieng specified to Configure.
1500 This work was sponsored by Logica.
1503 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1504 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1505 attribute creation routines such as certifcate requests and PKCS#12
1509 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1511 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1512 handshake which could lead to a cilent crash as found using the
1513 Codenomicon TLS test suite (CVE-2008-1672)
1514 [Steve Henson, Mark Cox]
1516 *) Fix double free in TLS server name extensions which could lead to
1517 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1520 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1522 Clear the error queue to ensure that error entries left from
1523 older function calls do not interfere with the correct operation.
1524 [Lutz Jaenicke, Erik de Castro Lopo]
1526 *) Remove root CA certificates of commercial CAs:
1528 The OpenSSL project does not recommend any specific CA and does not
1529 have any policy with respect to including or excluding any CA.
1530 Therefore it does not make any sense to ship an arbitrary selection
1531 of root CA certificates with the OpenSSL software.
1534 *) RSA OAEP patches to fix two separate invalid memory reads.
1535 The first one involves inputs when 'lzero' is greater than
1536 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1537 before the beginning of from). The second one involves inputs where
1538 the 'db' section contains nothing but zeroes (there is a one-byte
1539 invalid read after the end of 'db').
1540 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1542 *) Partial backport from 0.9.9-dev:
1544 Introduce bn_mul_mont (dedicated Montgomery multiplication
1545 procedure) as a candidate for BIGNUM assembler implementation.
1546 While 0.9.9-dev uses assembler for various architectures, only
1547 x86_64 is available by default here in the 0.9.8 branch, and
1548 32-bit x86 is available through a compile-time setting.
1550 To try the 32-bit x86 assembler implementation, use Configure
1551 option "enable-montasm" (which exists only for this backport).
1553 As "enable-montasm" for 32-bit x86 disclaims code stability
1554 anyway, in this constellation we activate additional code
1555 backported from 0.9.9-dev for further performance improvements,
1556 namely BN_from_montgomery_word. (To enable this otherwise,
1557 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1559 [Andy Polyakov (backport partially by Bodo Moeller)]
1561 *) Add TLS session ticket callback. This allows an application to set
1562 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1563 values. This is useful for key rollover for example where several key
1564 sets may exist with different names.
1567 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1568 This was broken until now in 0.9.8 releases, such that the only way
1569 a registered ENGINE could be used (assuming it initialises
1570 successfully on the host) was to explicitly set it as the default
1571 for the relevant algorithms. This is in contradiction with 0.9.7
1572 behaviour and the documentation. With this fix, when an ENGINE is
1573 registered into a given algorithm's table of implementations, the
1574 'uptodate' flag is reset so that auto-discovery will be used next
1575 time a new context for that algorithm attempts to select an
1577 [Ian Lister (tweaked by Geoff Thorpe)]
1579 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1580 implemention in the following ways:
1582 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1585 Lack of BER streaming support means one pass streaming processing is
1586 only supported if data is detached: setting the streaming flag is
1587 ignored for embedded content.
1589 CMS support is disabled by default and must be explicitly enabled
1590 with the enable-cms configuration option.
1593 *) Update the GMP engine glue to do direct copies between BIGNUM and
1594 mpz_t when openssl and GMP use the same limb size. Otherwise the
1595 existing "conversion via a text string export" trick is still used.
1596 [Paul Sheer <paulsheer@gmail.com>]
1598 *) Zlib compression BIO. This is a filter BIO which compressed and
1599 uncompresses any data passed through it.
1602 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1603 RFC3394 compatible AES key wrapping.
1606 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1607 sets string data without copying. X509_ALGOR_set0() and
1608 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1609 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1610 from an X509_ATTRIBUTE structure optionally checking it occurs only
1611 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1615 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1616 to get the expected BN_FLG_CONSTTIME behavior.
1617 [Bodo Moeller (Google)]
1621 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1622 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1623 - added some more tests to do_tests.pl
1624 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1625 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1626 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1627 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1628 - various changes to netware.pl to enable gcc-cross builds on Win32
1630 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1631 - various changes to fix missing prototype warnings
1632 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1633 - added AES, WHIRLPOOL and CPUID assembler code to build files
1634 - added missing AES assembler make rules to mk1mf.pl
1635 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1636 [Guenter Knauf <eflash@gmx.net>]
1638 *) Implement certificate status request TLS extension defined in RFC3546.
1639 A client can set the appropriate parameters and receive the encoded
1640 OCSP response via a callback. A server can query the supplied parameters
1641 and set the encoded OCSP response in the callback. Add simplified examples
1642 to s_client and s_server.
1645 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1647 *) Fix various bugs:
1648 + Binary incompatibility of ssl_ctx_st structure
1649 + DTLS interoperation with non-compliant servers
1650 + Don't call get_session_cb() without proposed session
1651 + Fix ia64 assembler code
1652 [Andy Polyakov, Steve Henson]
1654 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1656 *) DTLS Handshake overhaul. There were longstanding issues with
1657 OpenSSL DTLS implementation, which were making it impossible for
1658 RFC 4347 compliant client to communicate with OpenSSL server.
1659 Unfortunately just fixing these incompatibilities would "cut off"
1660 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1661 server keeps tolerating non RFC compliant syntax. The opposite is
1662 not true, 0.9.8f client can not communicate with earlier server.
1663 This update even addresses CVE-2007-4995.
1666 *) Changes to avoid need for function casts in OpenSSL: some compilers
1667 (gcc 4.2 and later) reject their use.
1668 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1671 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1672 RFC4507bis. The encrypted ticket format is an encrypted encoded
1673 SSL_SESSION structure, that way new session features are automatically
1676 If a client application caches session in an SSL_SESSION structure
1677 support is transparent because tickets are now stored in the encoded
1680 The SSL_CTX structure automatically generates keys for ticket
1681 protection in servers so again support should be possible
1682 with no application modification.
1684 If a client or server wishes to disable RFC4507 support then the option
1685 SSL_OP_NO_TICKET can be set.
1687 Add a TLS extension debugging callback to allow the contents of any client
1688 or server extensions to be examined.
1690 This work was sponsored by Google.
1693 *) Add initial support for TLS extensions, specifically for the server_name
1694 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1695 have new members for a host name. The SSL data structure has an
1696 additional member SSL_CTX *initial_ctx so that new sessions can be
1697 stored in that context to allow for session resumption, even after the
1698 SSL has been switched to a new SSL_CTX in reaction to a client's
1699 server_name extension.
1701 New functions (subject to change):
1703 SSL_get_servername()
1704 SSL_get_servername_type()
1707 New CTRL codes and macros (subject to change):
1709 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1710 - SSL_CTX_set_tlsext_servername_callback()
1711 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1712 - SSL_CTX_set_tlsext_servername_arg()
1713 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1715 openssl s_client has a new '-servername ...' option.
1717 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1718 '-key2 ...', '-servername_fatal' (subject to change). This allows
1719 testing the HostName extension for a specific single host name ('-cert'
1720 and '-key' remain fallbacks for handshakes without HostName
1721 negotiation). If the unrecogninzed_name alert has to be sent, this by
1722 default is a warning; it becomes fatal with the '-servername_fatal'
1725 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1727 *) Add AES and SSE2 assembly language support to VC++ build.
1730 *) Mitigate attack on final subtraction in Montgomery reduction.
1733 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1734 (which previously caused an internal error).
1737 *) Squeeze another 10% out of IGE mode when in != out.
1740 *) AES IGE mode speedup.
1741 [Dean Gaudet (Google)]
1743 *) Add the Korean symmetric 128-bit cipher SEED (see
1744 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1745 add SEED ciphersuites from RFC 4162:
1747 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1748 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1749 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1750 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1752 To minimize changes between patchlevels in the OpenSSL 0.9.8
1753 series, SEED remains excluded from compilation unless OpenSSL
1754 is configured with 'enable-seed'.
1755 [KISA, Bodo Moeller]
1757 *) Mitigate branch prediction attacks, which can be practical if a
1758 single processor is shared, allowing a spy process to extract
1759 information. For detailed background information, see
1760 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1761 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1762 and Necessary Software Countermeasures"). The core of the change
1763 are new versions BN_div_no_branch() and
1764 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1765 respectively, which are slower, but avoid the security-relevant
1766 conditional branches. These are automatically called by BN_div()
1767 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1768 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1769 remove a conditional branch.
1771 BN_FLG_CONSTTIME is the new name for the previous
1772 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1773 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1774 in the exponent causes BN_mod_exp_mont() to use the alternative
1775 implementation in BN_mod_exp_mont_consttime().) The old name
1776 remains as a deprecated alias.
1778 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1779 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1780 constant-time implementations for more than just exponentiation.
1781 Here too the old name is kept as a deprecated alias.
1783 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1784 the BN_BLINDING structure gets an independent copy of the
1785 modulus. This means that the previous "BIGNUM *m" argument to
1786 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1787 essentially becomes "const BIGNUM *m", although we can't actually
1788 change this in the header file before 0.9.9. It allows
1789 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1790 enable BN_FLG_CONSTTIME.
1792 [Matthew D Wood (Intel Corp)]
1794 *) In the SSL/TLS server implementation, be strict about session ID
1795 context matching (which matters if an application uses a single
1796 external cache for different purposes). Previously,
1797 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1798 set. This did ensure strict client verification, but meant that,
1799 with applications using a single external cache for quite
1800 different requirements, clients could circumvent ciphersuite
1801 restrictions for a given session ID context by starting a session
1802 in a different context.
1805 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1806 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1807 authentication-only ciphersuites.
1810 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1811 not complete and could lead to a possible single byte overflow
1812 (CVE-2007-5135) [Ben Laurie]
1814 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1816 *) Since AES128 and AES256 (and similarly Camellia128 and
1817 Camellia256) share a single mask bit in the logic of
1818 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1819 kludge to work properly if AES128 is available and AES256 isn't
1820 (or if Camellia128 is available and Camellia256 isn't).
1823 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1824 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1825 When a point or a seed is encoded in a BIT STRING, we need to
1826 prevent the removal of trailing zero bits to get the proper DER
1827 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1828 of a NamedBitList, for which trailing 0 bits need to be removed.)
1831 *) Have SSL/TLS server implementation tolerate "mismatched" record
1832 protocol version while receiving ClientHello even if the
1833 ClientHello is fragmented. (The server can't insist on the
1834 particular protocol version it has chosen before the ServerHello
1835 message has informed the client about his choice.)
1838 *) Add RFC 3779 support.
1839 [Rob Austein for ARIN, Ben Laurie]
1841 *) Load error codes if they are not already present instead of using a
1842 static variable. This allows them to be cleanly unloaded and reloaded.
1843 Improve header file function name parsing.
1846 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1847 or CAPABILITY handshake as required by RFCs.
1850 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1852 *) Introduce limits to prevent malicious keys being able to
1853 cause a denial of service. (CVE-2006-2940)
1854 [Steve Henson, Bodo Moeller]
1856 *) Fix ASN.1 parsing of certain invalid structures that can result
1857 in a denial of service. (CVE-2006-2937) [Steve Henson]
1859 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1860 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1862 *) Fix SSL client code which could crash if connecting to a
1863 malicious SSLv2 server. (CVE-2006-4343)
1864 [Tavis Ormandy and Will Drewry, Google Security Team]
1866 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1867 match only those. Before that, "AES256-SHA" would be interpreted
1868 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1869 the same strength classification in 0.9.7h) as we currently only
1870 have a single AES bit in the ciphersuite description bitmap.
1871 That change, however, also applied to ciphersuite strings such as
1872 "RC4-MD5" that intentionally matched multiple ciphersuites --
1873 namely, SSL 2.0 ciphersuites in addition to the more common ones
1874 from SSL 3.0/TLS 1.0.
1876 So we change the selection algorithm again: Naming an explicit
1877 ciphersuite selects this one ciphersuite, and any other similar
1878 ciphersuite (same bitmap) from *other* protocol versions.
1879 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1880 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1882 Since SSL 2.0 does not have any ciphersuites for which the
1883 128/256 bit distinction would be relevant, this works for now.
1884 The proper fix will be to use different bits for AES128 and
1885 AES256, which would have avoided the problems from the beginning;
1886 however, bits are scarce, so we can only do this in a new release
1887 (not just a patchlevel) when we can change the SSL_CIPHER
1888 definition to split the single 'unsigned long mask' bitmap into
1889 multiple values to extend the available space.
1893 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1895 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1896 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1898 *) Add AES IGE and biIGE modes.
1901 *) Change the Unix randomness entropy gathering to use poll() when
1902 possible instead of select(), since the latter has some
1903 undesirable limitations.
1904 [Darryl Miles via Richard Levitte and Bodo Moeller]
1906 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
1907 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
1908 cannot be implicitly activated as part of, e.g., the "AES" alias.
1909 However, please upgrade to OpenSSL 0.9.9[-dev] for
1910 non-experimental use of the ECC ciphersuites to get TLS extension
1911 support, which is required for curve and point format negotiation
1912 to avoid potential handshake problems.
1915 *) Disable rogue ciphersuites:
1917 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1918 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1919 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1921 The latter two were purportedly from
1922 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1925 Also deactivate the remaining ciphersuites from
1926 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1927 unofficial, and the ID has long expired.
1930 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1931 dual-core machines) and other potential thread-safety issues.
1934 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
1935 versions), which is now available for royalty-free use
1936 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
1937 Also, add Camellia TLS ciphersuites from RFC 4132.
1939 To minimize changes between patchlevels in the OpenSSL 0.9.8
1940 series, Camellia remains excluded from compilation unless OpenSSL
1941 is configured with 'enable-camellia'.
1944 *) Disable the padding bug check when compression is in use. The padding
1945 bug check assumes the first packet is of even length, this is not
1946 necessarily true if compresssion is enabled and can result in false
1947 positives causing handshake failure. The actual bug test is ancient
1948 code so it is hoped that implementations will either have fixed it by
1949 now or any which still have the bug do not support compression.
1952 Changes between 0.9.8a and 0.9.8b [04 May 2006]
1954 *) When applying a cipher rule check to see if string match is an explicit
1955 cipher suite and only match that one cipher suite if it is.
1958 *) Link in manifests for VC++ if needed.
1959 [Austin Ziegler <halostatue@gmail.com>]
1961 *) Update support for ECC-based TLS ciphersuites according to
1962 draft-ietf-tls-ecc-12.txt with proposed changes (but without
1963 TLS extensions, which are supported starting with the 0.9.9
1964 branch, not in the OpenSSL 0.9.8 branch).
1967 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
1968 opaque EVP_CIPHER_CTX handling.
1971 *) Fixes and enhancements to zlib compression code. We now only use
1972 "zlib1.dll" and use the default __cdecl calling convention on Win32
1973 to conform with the standards mentioned here:
1974 http://www.zlib.net/DLL_FAQ.txt
1975 Static zlib linking now works on Windows and the new --with-zlib-include
1976 --with-zlib-lib options to Configure can be used to supply the location
1977 of the headers and library. Gracefully handle case where zlib library
1981 *) Several fixes and enhancements to the OID generation code. The old code
1982 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
1983 handle numbers larger than ULONG_MAX, truncated printing and had a
1984 non standard OBJ_obj2txt() behaviour.
1987 *) Add support for building of engines under engine/ as shared libraries
1988 under VC++ build system.
1991 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
1992 Hopefully, we will not see any false combination of paths any more.
1995 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
1997 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1998 (part of SSL_OP_ALL). This option used to disable the
1999 countermeasure against man-in-the-middle protocol-version
2000 rollback in the SSL 2.0 server implementation, which is a bad
2001 idea. (CVE-2005-2969)
2003 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2004 for Information Security, National Institute of Advanced Industrial
2005 Science and Technology [AIST], Japan)]
2007 *) Add two function to clear and return the verify parameter flags.
2010 *) Keep cipherlists sorted in the source instead of sorting them at
2011 runtime, thus removing the need for a lock.
2014 *) Avoid some small subgroup attacks in Diffie-Hellman.
2015 [Nick Mathewson and Ben Laurie]
2017 *) Add functions for well-known primes.
2020 *) Extended Windows CE support.
2021 [Satoshi Nakamura and Andy Polyakov]
2023 *) Initialize SSL_METHOD structures at compile time instead of during
2024 runtime, thus removing the need for a lock.
2027 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2028 attempting to decrypt each encrypted key in turn. Add support to
2032 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2034 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2037 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2040 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2041 key into the same file any more.
2044 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2047 *) Add -utf8 command line and config file option to 'ca'.
2048 [Stefan <stf@udoma.org]
2050 *) Removed the macro des_crypt(), as it seems to conflict with some
2051 libraries. Use DES_crypt().
2054 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2055 involves renaming the source and generated shared-libs for
2056 both. The engines will accept the corrected or legacy ids
2057 ('ncipher' and '4758_cca' respectively) when binding. NB,
2058 this only applies when building 'shared'.
2059 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2061 *) Add attribute functions to EVP_PKEY structure. Modify
2062 PKCS12_create() to recognize a CSP name attribute and
2063 use it. Make -CSP option work again in pkcs12 utility.
2066 *) Add new functionality to the bn blinding code:
2067 - automatic re-creation of the BN_BLINDING parameters after
2068 a fixed number of uses (currently 32)
2069 - add new function for parameter creation
2070 - introduce flags to control the update behaviour of the
2071 BN_BLINDING parameters
2072 - hide BN_BLINDING structure
2073 Add a second BN_BLINDING slot to the RSA structure to improve
2074 performance when a single RSA object is shared among several
2078 *) Add support for DTLS.
2079 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2081 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2082 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2085 *) Remove buggy and incompletet DH cert support from
2086 ssl/ssl_rsa.c and ssl/s3_both.c
2089 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2090 the apps/openssl applications.
2093 *) Compile clean with "-Wall -Wmissing-prototypes
2094 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2095 DEBUG_SAFESTACK must also be set.
2098 *) Change ./Configure so that certain algorithms can be disabled by default.
2099 The new counterpiece to "no-xxx" is "enable-xxx".
2101 The patented RC5 and MDC2 algorithms will now be disabled unless
2102 "enable-rc5" and "enable-mdc2", respectively, are specified.
2104 (IDEA remains enabled despite being patented. This is because IDEA
2105 is frequently required for interoperability, and there is no license
2106 fee for non-commercial use. As before, "no-idea" can be used to
2107 avoid this algorithm.)
2111 *) Add processing of proxy certificates (see RFC 3820). This work was
2112 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2113 EGEE (Enabling Grids for E-science in Europe).
2116 *) RC4 performance overhaul on modern architectures/implementations, such
2117 as Intel P4, IA-64 and AMD64.
2120 *) New utility extract-section.pl. This can be used specify an alternative
2121 section number in a pod file instead of having to treat each file as
2122 a separate case in Makefile. This can be done by adding two lines to the
2125 =for comment openssl_section:XXX
2127 The blank line is mandatory.
2131 *) New arguments -certform, -keyform and -pass for s_client and s_server
2132 to allow alternative format key and certificate files and passphrase
2136 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2137 update associated structures and add various utility functions.
2139 Add new policy related verify parameters, include policy checking in
2140 standard verify code. Enhance 'smime' application with extra parameters
2141 to support policy checking and print out.
2144 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2145 Nehemiah processors. These extensions support AES encryption in hardware
2146 as well as RNG (though RNG support is currently disabled).
2147 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2149 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2152 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2153 [Andy Polyakov and a number of other people]
2155 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2156 implementation contributed by IBM.
2157 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2159 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2160 exponent rather than 'unsigned long'. There is a corresponding change to
2161 the new 'rsa_keygen' element of the RSA_METHOD structure.
2162 [Jelte Jansen, Geoff Thorpe]
2164 *) Functionality for creating the initial serial number file is now
2165 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2167 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2168 number file to 1, which is bound to cause problems. To avoid
2169 the problems while respecting compatibility between different 0.9.7
2170 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2171 CA.pl for serial number initialization. With the new release 0.9.8,
2172 we can fix the problem directly in the 'ca' utility.)
2175 *) Reduced header interdepencies by declaring more opaque objects in
2176 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2177 give fewer recursive includes, which could break lazy source code - so
2178 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2179 developers should define this symbol when building and using openssl to
2180 ensure they track the recommended behaviour, interfaces, [etc], but
2181 backwards-compatible behaviour prevails when this isn't defined.
2184 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2187 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2188 This will generate a random key of the appropriate length based on the
2189 cipher context. The EVP_CIPHER can provide its own random key generation
2190 routine to support keys of a specific form. This is used in the des and
2191 3des routines to generate a key of the correct parity. Update S/MIME
2192 code to use new functions and hence generate correct parity DES keys.
2193 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2194 valid (weak or incorrect parity).
2197 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2198 as looking them up. This is useful when the verified structure may contain
2199 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2200 present unless the new PKCS7_NO_CRL flag is asserted.
2203 *) Extend ASN1 oid configuration module. It now additionally accepts the
2206 shortName = some long name, 1.2.3.4
2209 *) Reimplemented the BN_CTX implementation. There is now no more static
2210 limitation on the number of variables it can handle nor the depth of the
2211 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2212 information can now expand as required, and rather than having a single
2213 static array of bignums, BN_CTX now uses a linked-list of such arrays
2214 allowing it to expand on demand whilst maintaining the usefulness of
2215 BN_CTX's "bundling".
2218 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2219 to allow all RSA operations to function using a single BN_CTX.
2222 *) Preliminary support for certificate policy evaluation and checking. This
2223 is initially intended to pass the tests outlined in "Conformance Testing
2224 of Relying Party Client Certificate Path Processing Logic" v1.07.
2227 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2228 remained unused and not that useful. A variety of other little bignum
2229 tweaks and fixes have also been made continuing on from the audit (see
2233 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2234 associated ASN1, EVP and SSL functions and old ASN1 macros.
2237 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2238 and this should never fail. So the return value from the use of
2239 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2240 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2243 *) BN_CTX_get() should return zero-valued bignums, providing the same
2244 initialised value as BN_new().
2245 [Geoff Thorpe, suggested by Ulf Möller]
2247 *) Support for inhibitAnyPolicy certificate extension.
2250 *) An audit of the BIGNUM code is underway, for which debugging code is
2251 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2252 is considered valid when processing BIGNUMs, and causes execution to
2253 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2254 further steps are taken to deliberately pollute unused data in BIGNUM
2255 structures to try and expose faulty code further on. For now, openssl will
2256 (in its default mode of operation) continue to tolerate the inconsistent
2257 forms that it has tolerated in the past, but authors and packagers should
2258 consider trying openssl and their own applications when compiled with
2259 these debugging symbols defined. It will help highlight potential bugs in
2260 their own code, and will improve the test coverage for OpenSSL itself. At
2261 some point, these tighter rules will become openssl's default to improve
2262 maintainability, though the assert()s and other overheads will remain only
2263 in debugging configurations. See bn.h for more details.
2264 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2266 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2267 that can only be obtained through BN_CTX_new() (which implicitly
2268 initialises it). The presence of this function only made it possible
2269 to overwrite an existing structure (and cause memory leaks).
2272 *) Because of the callback-based approach for implementing LHASH as a
2273 template type, lh_insert() adds opaque objects to hash-tables and
2274 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2275 to clean up those corresponding objects before destroying the hash table
2276 (and losing the object pointers). So some over-zealous constifications in
2277 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2278 objects as "const" and the lh_doall[_arg] callback wrappers are not
2279 prototyped to have "const" restrictions on the object pointers they are
2280 given (and so aren't required to cast them away any more).
2283 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2284 (speed) prefers to use its own implementation. The two implementations
2285 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2286 its object type properly exposed (MS_TM) instead of casting to/from "char
2287 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2288 aren't necessarily the greatest nomenclatures - but this is what was used
2289 internally to the implementation so I've used that for now.
2292 *) Ensure that deprecated functions do not get compiled when
2293 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2294 the self-tests were still using deprecated key-generation functions so
2295 these have been updated also.
2298 *) Reorganise PKCS#7 code to separate the digest location functionality
2299 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2300 New function PKCS7_set_digest() to set the digest type for PKCS#7
2301 digestedData type. Add additional code to correctly generate the
2302 digestedData type and add support for this type in PKCS7 initialization
2306 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2307 structure of type "other".
2310 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2311 sure the loop does correctly stop and breaking ("division by zero")
2312 modulus operations are not performed. The (pre-generated) prime
2313 table crypto/bn/bn_prime.h was already correct, but it could not be
2314 re-generated on some platforms because of the "division by zero"
2315 situation in the script.
2316 [Ralf S. Engelschall]
2318 *) Update support for ECC-based TLS ciphersuites according to
2319 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2320 SHA-1 now is only used for "small" curves (where the
2321 representation of a field element takes up to 24 bytes); for
2322 larger curves, the field element resulting from ECDH is directly
2323 used as premaster secret.
2324 [Douglas Stebila (Sun Microsystems Laboratories)]
2326 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2327 curve secp160r1 to the tests.
2328 [Douglas Stebila (Sun Microsystems Laboratories)]
2330 *) Add the possibility to load symbols globally with DSO.
2331 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2333 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2334 control of the error stack.
2337 *) Add support for STORE in ENGINE.
2340 *) Add the STORE type. The intention is to provide a common interface
2341 to certificate and key stores, be they simple file-based stores, or
2342 HSM-type store, or LDAP stores, or...
2343 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2346 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2347 pass a list of arguments to any function as well as provide a way
2348 for a function to pass data back to the caller.
2351 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2352 works like BUF_strdup() but can be used to duplicate a portion of
2353 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2357 *) Add the function sk_find_ex() which works like sk_find(), but will
2358 return an index to an element even if an exact match couldn't be
2359 found. The index is guaranteed to point at the element where the
2360 searched-for key would be inserted to preserve sorting order.
2363 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2364 takes an extra flags argument for optional functionality. Currently,
2365 the following flags are defined:
2367 OBJ_BSEARCH_VALUE_ON_NOMATCH
2368 This one gets OBJ_bsearch_ex() to return a pointer to the first
2369 element where the comparing function returns a negative or zero
2372 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2373 This one gets OBJ_bsearch_ex() to return a pointer to the first
2374 element where the comparing function returns zero. This is useful
2375 if there are more than one element where the comparing function
2379 *) Make it possible to create self-signed certificates with 'openssl ca'
2380 in such a way that the self-signed certificate becomes part of the
2381 CA database and uses the same mechanisms for serial number generation
2382 as all other certificate signing. The new flag '-selfsign' enables
2383 this functionality. Adapt CA.sh and CA.pl.in.
2386 *) Add functionality to check the public key of a certificate request
2387 against a given private. This is useful to check that a certificate
2388 request can be signed by that key (self-signing).
2391 *) Make it possible to have multiple active certificates with the same
2392 subject in the CA index file. This is done only if the keyword
2393 'unique_subject' is set to 'no' in the main CA section (default
2394 if 'CA_default') of the configuration file. The value is saved
2395 with the database itself in a separate index attribute file,
2396 named like the index file with '.attr' appended to the name.
2399 *) Generate muti valued AVAs using '+' notation in config files for
2403 *) Support for nameConstraints certificate extension.
2406 *) Support for policyConstraints certificate extension.
2409 *) Support for policyMappings certificate extension.
2412 *) Make sure the default DSA_METHOD implementation only uses its
2413 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2414 and change its own handlers to be NULL so as to remove unnecessary
2415 indirection. This lets alternative implementations fallback to the
2416 default implementation more easily.
2419 *) Support for directoryName in GeneralName related extensions
2423 *) Make it possible to link applications using Makefile.shared.
2424 Make that possible even when linking against static libraries!
2427 *) Support for single pass processing for S/MIME signing. This now
2428 means that S/MIME signing can be done from a pipe, in addition
2429 cleartext signing (multipart/signed type) is effectively streaming
2430 and the signed data does not need to be all held in memory.
2432 This is done with a new flag PKCS7_STREAM. When this flag is set
2433 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2434 is done after the data is output (and digests calculated) in
2435 SMIME_write_PKCS7().
2438 *) Add full support for -rpath/-R, both in shared libraries and
2439 applications, at least on the platforms where it's known how
2443 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2444 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2445 will now compute a table of multiples of the generator that
2446 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2447 faster (notably in the case of a single point multiplication,
2448 scalar * generator).
2449 [Nils Larsch, Bodo Moeller]
2451 *) IPv6 support for certificate extensions. The various extensions
2452 which use the IP:a.b.c.d can now take IPv6 addresses using the
2453 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2457 *) Added an ENGINE that implements RSA by performing private key
2458 exponentiations with the GMP library. The conversions to and from
2459 GMP's mpz_t format aren't optimised nor are any montgomery forms
2460 cached, and on x86 it appears OpenSSL's own performance has caught up.
2461 However there are likely to be other architectures where GMP could
2462 provide a boost. This ENGINE is not built in by default, but it can be
2463 specified at Configure time and should be accompanied by the necessary
2464 linker additions, eg;
2465 ./config -DOPENSSL_USE_GMP -lgmp
2468 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2469 testing availability of engines with "-t" - the old behaviour is
2470 produced by increasing the feature's verbosity with "-tt".
2473 *) ECDSA routines: under certain error conditions uninitialized BN objects
2474 could be freed. Solution: make sure initialization is performed early
2475 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2479 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2480 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2481 software implementations. For DSA and DH, parameter generation can
2482 also be overriden by providing the appropriate method callbacks.
2485 *) Change the "progress" mechanism used in key-generation and
2486 primality testing to functions that take a new BN_GENCB pointer in
2487 place of callback/argument pairs. The new API functions have "_ex"
2488 postfixes and the older functions are reimplemented as wrappers for
2489 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2490 declarations of the old functions to help (graceful) attempts to
2491 migrate to the new functions. Also, the new key-generation API
2492 functions operate on a caller-supplied key-structure and return
2493 success/failure rather than returning a key or NULL - this is to
2494 help make "keygen" another member function of RSA_METHOD etc.
2496 Example for using the new callback interface:
2498 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2502 BN_GENCB_set(&my_cb, my_callback, my_arg);
2504 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2505 /* For the meaning of a, b in calls to my_callback(), see the
2506 * documentation of the function that calls the callback.
2507 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2508 * my_callback should return 1 if it wants BN_is_prime_ex()
2509 * to continue, or 0 to stop.
2514 *) Change the ZLIB compression method to be stateful, and make it
2515 available to TLS with the number defined in
2516 draft-ietf-tls-compression-04.txt.
2519 *) Add the ASN.1 structures and functions for CertificatePair, which
2520 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2522 CertificatePair ::= SEQUENCE {
2523 forward [0] Certificate OPTIONAL,
2524 reverse [1] Certificate OPTIONAL,
2525 -- at least one of the pair shall be present -- }
2527 Also implement the PEM functions to read and write certificate
2528 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2530 This needed to be defined, mostly for the sake of the LDAP
2531 attribute crossCertificatePair, but may prove useful elsewhere as
2535 *) Make it possible to inhibit symlinking of shared libraries in
2536 Makefile.shared, for Cygwin's sake.
2539 *) Extend the BIGNUM API by creating a function
2540 void BN_set_negative(BIGNUM *a, int neg);
2541 and a macro that behave like
2542 int BN_is_negative(const BIGNUM *a);
2544 to avoid the need to access 'a->neg' directly in applications.
2547 *) Implement fast modular reduction for pseudo-Mersenne primes
2548 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2549 EC_GROUP_new_curve_GFp() will now automatically use this
2551 [Nils Larsch <nla@trustcenter.de>]
2553 *) Add new lock type (CRYPTO_LOCK_BN).
2556 *) Change the ENGINE framework to automatically load engines
2557 dynamically from specific directories unless they could be
2558 found to already be built in or loaded. Move all the
2559 current engines except for the cryptodev one to a new
2561 The engines in engines/ are built as shared libraries if
2562 the "shared" options was given to ./Configure or ./config.
2563 Otherwise, they are inserted in libcrypto.a.
2564 /usr/local/ssl/engines is the default directory for dynamic
2565 engines, but that can be overriden at configure time through
2566 the usual use of --prefix and/or --openssldir, and at run
2567 time with the environment variable OPENSSL_ENGINES.
2568 [Geoff Thorpe and Richard Levitte]
2570 *) Add Makefile.shared, a helper makefile to build shared
2571 libraries. Addapt Makefile.org.
2574 *) Add version info to Win32 DLLs.
2575 [Peter 'Luna' Runestig" <peter@runestig.com>]
2577 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2578 can be added using this API to created arbitrary PKCS#12
2579 files while avoiding the low level API.
2581 New options to PKCS12_create(), key or cert can be NULL and
2582 will then be omitted from the output file. The encryption
2583 algorithm NIDs can be set to -1 for no encryption, the mac
2584 iteration count can be set to 0 to omit the mac.
2586 Enhance pkcs12 utility by making the -nokeys and -nocerts
2587 options work when creating a PKCS#12 file. New option -nomac
2588 to omit the mac, NONE can be set for an encryption algorithm.
2589 New code is modified to use the enhanced PKCS12_create()
2590 instead of the low level API.
2593 *) Extend ASN1 encoder to support indefinite length constructed
2594 encoding. This can output sequences tags and octet strings in
2595 this form. Modify pk7_asn1.c to support indefinite length
2596 encoding. This is experimental and needs additional code to
2597 be useful, such as an ASN1 bio and some enhanced streaming
2600 Extend template encode functionality so that tagging is passed
2601 down to the template encoder.
2604 *) Let 'openssl req' fail if an argument to '-newkey' is not
2605 recognized instead of using RSA as a default.
2608 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2609 As these are not official, they are not included in "ALL";
2610 the "ECCdraft" ciphersuite group alias can be used to select them.
2611 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2613 *) Add ECDH engine support.
2614 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2616 *) Add ECDH in new directory crypto/ecdh/.
2617 [Douglas Stebila (Sun Microsystems Laboratories)]
2619 *) Let BN_rand_range() abort with an error after 100 iterations
2620 without success (which indicates a broken PRNG).
2623 *) Change BN_mod_sqrt() so that it verifies that the input value
2624 is really the square of the return value. (Previously,
2625 BN_mod_sqrt would show GIGO behaviour.)
2628 *) Add named elliptic curves over binary fields from X9.62, SECG,
2629 and WAP/WTLS; add OIDs that were still missing.
2631 [Sheueling Chang Shantz and Douglas Stebila
2632 (Sun Microsystems Laboratories)]
2634 *) Extend the EC library for elliptic curves over binary fields
2635 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2638 EC_GF2m_simple_method
2642 EC_GROUP_new_curve_GF2m
2643 EC_GROUP_set_curve_GF2m
2644 EC_GROUP_get_curve_GF2m
2645 EC_POINT_set_affine_coordinates_GF2m
2646 EC_POINT_get_affine_coordinates_GF2m
2647 EC_POINT_set_compressed_coordinates_GF2m
2649 Point compression for binary fields is disabled by default for
2650 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2653 As binary polynomials are represented as BIGNUMs, various members
2654 of the EC_GROUP and EC_POINT data structures can be shared
2655 between the implementations for prime fields and binary fields;
2656 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2657 are essentially identical to their ..._GFp counterparts.
2658 (For simplicity, the '..._GFp' prefix has been dropped from
2659 various internal method names.)
2661 An internal 'field_div' method (similar to 'field_mul' and
2662 'field_sqr') has been added; this is used only for binary fields.
2664 [Sheueling Chang Shantz and Douglas Stebila
2665 (Sun Microsystems Laboratories)]
2667 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2668 through methods ('mul', 'precompute_mult').
2670 The generic implementations (now internally called 'ec_wNAF_mul'
2671 and 'ec_wNAF_precomputed_mult') remain the default if these
2672 methods are undefined.
2674 [Sheueling Chang Shantz and Douglas Stebila
2675 (Sun Microsystems Laboratories)]
2677 *) New function EC_GROUP_get_degree, which is defined through
2678 EC_METHOD. For curves over prime fields, this returns the bit
2679 length of the modulus.
2681 [Sheueling Chang Shantz and Douglas Stebila
2682 (Sun Microsystems Laboratories)]
2684 *) New functions EC_GROUP_dup, EC_POINT_dup.
2685 (These simply call ..._new and ..._copy).
2687 [Sheueling Chang Shantz and Douglas Stebila
2688 (Sun Microsystems Laboratories)]
2690 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2691 Polynomials are represented as BIGNUMs (where the sign bit is not
2692 used) in the following functions [macros]:
2695 BN_GF2m_sub [= BN_GF2m_add]
2696 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2697 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2698 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2700 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2701 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2702 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2703 BN_GF2m_cmp [= BN_ucmp]
2705 (Note that only the 'mod' functions are actually for fields GF(2^m).
2706 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2708 For some functions, an the irreducible polynomial defining a
2709 field can be given as an 'unsigned int[]' with strictly
2710 decreasing elements giving the indices of those bits that are set;
2711 i.e., p[] represents the polynomial
2712 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2714 p[0] > p[1] > ... > p[k] = 0.
2715 This applies to the following functions:
2720 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2721 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2723 BN_GF2m_mod_sqrt_arr
2724 BN_GF2m_mod_solve_quad_arr
2728 Conversion can be performed by the following functions:
2733 bntest.c has additional tests for binary polynomial arithmetic.
2735 Two implementations for BN_GF2m_mod_div() are available.
2736 The default algorithm simply uses BN_GF2m_mod_inv() and
2737 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2738 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2739 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2741 [Sheueling Chang Shantz and Douglas Stebila
2742 (Sun Microsystems Laboratories)]
2744 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2745 functionality is disabled at compile-time.
2746 [Douglas Stebila <douglas.stebila@sun.com>]
2748 *) Change default behaviour of 'openssl asn1parse' so that more
2749 information is visible when viewing, e.g., a certificate:
2751 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2752 mode the content of non-printable OCTET STRINGs is output in a
2753 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2754 avoid the appearance of a printable string.
2755 [Nils Larsch <nla@trustcenter.de>]
2757 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2759 EC_GROUP_set_asn1_flag()
2760 EC_GROUP_get_asn1_flag()
2761 EC_GROUP_set_point_conversion_form()
2762 EC_GROUP_get_point_conversion_form()
2763 These control ASN1 encoding details:
2764 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2765 has been set to OPENSSL_EC_NAMED_CURVE.
2766 - Points are encoded in uncompressed form by default; options for
2767 asn1_for are as for point2oct, namely
2768 POINT_CONVERSION_COMPRESSED
2769 POINT_CONVERSION_UNCOMPRESSED
2770 POINT_CONVERSION_HYBRID
2772 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2775 EC_GROUP_get0_seed()
2776 EC_GROUP_get_seed_len()
2777 This is used only for ASN1 purposes (so far).
2778 [Nils Larsch <nla@trustcenter.de>]
2780 *) Add 'field_type' member to EC_METHOD, which holds the NID
2781 of the appropriate field type OID. The new function
2782 EC_METHOD_get_field_type() returns this value.
2783 [Nils Larsch <nla@trustcenter.de>]
2788 EC_POINT_point2hex()
2789 EC_POINT_hex2point()
2790 providing useful interfaces to EC_POINT_point2oct() and
2791 EC_POINT_oct2point().
2792 [Nils Larsch <nla@trustcenter.de>]
2794 *) Change internals of the EC library so that the functions
2795 EC_GROUP_set_generator()
2796 EC_GROUP_get_generator()
2797 EC_GROUP_get_order()
2798 EC_GROUP_get_cofactor()
2799 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2800 to methods, which would lead to unnecessary code duplication when
2801 adding different types of curves.
2802 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2804 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2805 arithmetic, and such that modified wNAFs are generated
2806 (which avoid length expansion in many cases).
2809 *) Add a function EC_GROUP_check_discriminant() (defined via
2810 EC_METHOD) that verifies that the curve discriminant is non-zero.
2812 Add a function EC_GROUP_check() that makes some sanity tests
2813 on a EC_GROUP, its generator and order. This includes
2814 EC_GROUP_check_discriminant().
2815 [Nils Larsch <nla@trustcenter.de>]
2817 *) Add ECDSA in new directory crypto/ecdsa/.
2819 Add applications 'openssl ecparam' and 'openssl ecdsa'
2820 (these are based on 'openssl dsaparam' and 'openssl dsa').
2822 ECDSA support is also included in various other files across the
2823 library. Most notably,
2824 - 'openssl req' now has a '-newkey ecdsa:file' option;
2825 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2826 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2827 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2828 them suitable for ECDSA where domain parameters must be
2829 extracted before the specific public key;
2830 - ECDSA engine support has been added.
2831 [Nils Larsch <nla@trustcenter.de>]
2833 *) Include some named elliptic curves, and add OIDs from X9.62,
2834 SECG, and WAP/WTLS. Each curve can be obtained from the new
2836 EC_GROUP_new_by_curve_name(),
2837 and the list of available named curves can be obtained with
2838 EC_get_builtin_curves().
2839 Also add a 'curve_name' member to EC_GROUP objects, which can be
2841 EC_GROUP_set_curve_name()
2842 EC_GROUP_get_curve_name()
2843 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2845 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2846 was actually never needed) and in BN_mul(). The removal in BN_mul()
2847 required a small change in bn_mul_part_recursive() and the addition
2848 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2849 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2850 bn_sub_words() and bn_add_words() except they take arrays with
2854 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2856 *) Cleanse PEM buffers before freeing them since they may contain
2858 [Benjamin Bennett <ben@psc.edu>]
2860 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2861 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2862 authentication-only ciphersuites.
2865 *) Since AES128 and AES256 share a single mask bit in the logic of
2866 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2867 kludge to work properly if AES128 is available and AES256 isn't.
2870 *) Expand security boundary to match 1.1.1 module.
2873 *) Remove redundant features: hash file source, editing of test vectors
2874 modify fipsld to use external fips_premain.c signature.
2877 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2878 run algorithm test programs.
2881 *) Make algorithm test programs more tolerant of whitespace.
2884 *) Have SSL/TLS server implementation tolerate "mismatched" record
2885 protocol version while receiving ClientHello even if the
2886 ClientHello is fragmented. (The server can't insist on the
2887 particular protocol version it has chosen before the ServerHello
2888 message has informed the client about his choice.)
2891 *) Load error codes if they are not already present instead of using a
2892 static variable. This allows them to be cleanly unloaded and reloaded.
2895 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2897 *) Introduce limits to prevent malicious keys being able to
2898 cause a denial of service. (CVE-2006-2940)
2899 [Steve Henson, Bodo Moeller]
2901 *) Fix ASN.1 parsing of certain invalid structures that can result
2902 in a denial of service. (CVE-2006-2937) [Steve Henson]
2904 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2905 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2907 *) Fix SSL client code which could crash if connecting to a
2908 malicious SSLv2 server. (CVE-2006-4343)
2909 [Tavis Ormandy and Will Drewry, Google Security Team]
2911 *) Change ciphersuite string processing so that an explicit
2912 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
2913 will no longer include "AES128-SHA"), and any other similar
2914 ciphersuite (same bitmap) from *other* protocol versions (so that
2915 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
2916 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
2917 changes from 0.9.8b and 0.9.8d.
2920 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
2922 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2923 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2925 *) Change the Unix randomness entropy gathering to use poll() when
2926 possible instead of select(), since the latter has some
2927 undesirable limitations.
2928 [Darryl Miles via Richard Levitte and Bodo Moeller]
2930 *) Disable rogue ciphersuites:
2932 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2933 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2934 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2936 The latter two were purportedly from
2937 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2940 Also deactive the remaining ciphersuites from
2941 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2942 unofficial, and the ID has long expired.
2945 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2946 dual-core machines) and other potential thread-safety issues.
2949 Changes between 0.9.7i and 0.9.7j [04 May 2006]
2951 *) Adapt fipsld and the build system to link against the validated FIPS
2952 module in FIPS mode.
2955 *) Fixes for VC++ 2005 build under Windows.
2958 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
2959 from a Windows bash shell such as MSYS. It is autodetected from the
2960 "config" script when run from a VC++ environment. Modify standard VC++
2961 build to use fipscanister.o from the GNU make build.
2964 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
2966 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
2967 The value now differs depending on if you build for FIPS or not.
2968 BEWARE! A program linked with a shared FIPSed libcrypto can't be
2969 safely run with a non-FIPSed libcrypto, as it may crash because of
2970 the difference induced by this change.
2973 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
2975 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2976 (part of SSL_OP_ALL). This option used to disable the
2977 countermeasure against man-in-the-middle protocol-version
2978 rollback in the SSL 2.0 server implementation, which is a bad
2979 idea. (CVE-2005-2969)
2981 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2982 for Information Security, National Institute of Advanced Industrial
2983 Science and Technology [AIST], Japan)]
2985 *) Minimal support for X9.31 signatures and PSS padding modes. This is
2986 mainly for FIPS compliance and not fully integrated at this stage.
2989 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
2990 the exponentiation using a fixed-length exponent. (Otherwise,
2991 the information leaked through timing could expose the secret key
2992 after many signatures; cf. Bleichenbacher's attack on DSA with
2996 *) Make a new fixed-window mod_exp implementation the default for
2997 RSA, DSA, and DH private-key operations so that the sequence of
2998 squares and multiplies and the memory access pattern are
2999 independent of the particular secret key. This will mitigate
3000 cache-timing and potential related attacks.
3002 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
3003 and this is automatically used by BN_mod_exp_mont() if the new flag
3004 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
3005 will use this BN flag for private exponents unless the flag
3006 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
3007 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
3009 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
3011 *) Change the client implementation for SSLv23_method() and
3012 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
3013 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
3014 (Previously, the SSL 2.0 backwards compatible Client Hello
3015 message format would be used even with SSL_OP_NO_SSLv2.)
3018 *) Add support for smime-type MIME parameter in S/MIME messages which some
3022 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
3023 a threadsafe manner. Modify rsa code to use new function and add calls
3024 to dsa and dh code (which had race conditions before).
3027 *) Include the fixed error library code in the C error file definitions
3028 instead of fixing them up at runtime. This keeps the error code
3029 structures constant.
3032 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3034 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3037 *) Fixes for newer kerberos headers. NB: the casts are needed because
3038 the 'length' field is signed on one version and unsigned on another
3039 with no (?) obvious way to tell the difference, without these VC++
3040 complains. Also the "definition" of FAR (blank) is no longer included
3041 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3042 some needed definitions.
3045 *) Undo Cygwin change.
3048 *) Added support for proxy certificates according to RFC 3820.
3049 Because they may be a security thread to unaware applications,
3050 they must be explicitely allowed in run-time. See
3051 docs/HOWTO/proxy_certificates.txt for further information.
3054 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3056 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3057 server and client random values. Previously
3058 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3059 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3061 This change has negligible security impact because:
3063 1. Server and client random values still have 24 bytes of pseudo random
3066 2. Server and client random values are sent in the clear in the initial
3069 3. The master secret is derived using the premaster secret (48 bytes in
3070 size for static RSA ciphersuites) as well as client server and random
3073 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3076 [Stephen Henson, reported by UK NISCC]
3078 *) Use Windows randomness collection on Cygwin.
3081 *) Fix hang in EGD/PRNGD query when communication socket is closed
3082 prematurely by EGD/PRNGD.
3083 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3085 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3088 *) Back-port of selected performance improvements from development
3089 branch, as well as improved support for PowerPC platforms.
3092 *) Add lots of checks for memory allocation failure, error codes to indicate
3093 failure and freeing up memory if a failure occurs.
3094 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3096 *) Add new -passin argument to dgst.
3099 *) Perform some character comparisons of different types in X509_NAME_cmp:
3100 this is needed for some certificates that reencode DNs into UTF8Strings
3101 (in violation of RFC3280) and can't or wont issue name rollover
3105 *) Make an explicit check during certificate validation to see that
3106 the CA setting in each certificate on the chain is correct. As a
3107 side effect always do the following basic checks on extensions,
3108 not just when there's an associated purpose to the check:
3110 - if there is an unhandled critical extension (unless the user
3111 has chosen to ignore this fault)
3112 - if the path length has been exceeded (if one is set at all)
3113 - that certain extensions fit the associated purpose (if one has
3117 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3119 *) Avoid a race condition when CRLs are checked in a multi threaded
3120 environment. This would happen due to the reordering of the revoked
3121 entries during signature checking and serial number lookup. Now the
3122 encoding is cached and the serial number sort performed under a lock.
3123 Add new STACK function sk_is_sorted().
3126 *) Add Delta CRL to the extension code.
3129 *) Various fixes to s3_pkt.c so alerts are sent properly.
3130 [David Holmes <d.holmes@f5.com>]
3132 *) Reduce the chances of duplicate issuer name and serial numbers (in
3133 violation of RFC3280) using the OpenSSL certificate creation utilities.
3134 This is done by creating a random 64 bit value for the initial serial
3135 number when a serial number file is created or when a self signed
3136 certificate is created using 'openssl req -x509'. The initial serial
3137 number file is created using 'openssl x509 -next_serial' in CA.pl
3138 rather than being initialized to 1.
3141 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3143 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3144 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3145 [Joe Orton, Steve Henson]
3147 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3149 [Joe Orton, Steve Henson]
3151 *) Make it possible to have multiple active certificates with the same
3152 subject in the CA index file. This is done only if the keyword
3153 'unique_subject' is set to 'no' in the main CA section (default
3154 if 'CA_default') of the configuration file. The value is saved
3155 with the database itself in a separate index attribute file,
3156 named like the index file with '.attr' appended to the name.
3159 *) X509 verify fixes. Disable broken certificate workarounds when
3160 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3161 keyUsage extension present. Don't accept CRLs with unhandled critical
3162 extensions: since verify currently doesn't process CRL extensions this
3163 rejects a CRL with *any* critical extensions. Add new verify error codes
3167 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3168 A clarification of RFC2560 will require the use of OCTET STRINGs and
3169 some implementations cannot handle the current raw format. Since OpenSSL
3170 copies and compares OCSP nonces as opaque blobs without any attempt at
3171 parsing them this should not create any compatibility issues.
3174 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3175 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3176 this HMAC (and other) operations are several times slower than OpenSSL
3180 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3181 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3183 *) Use the correct content when signing type "other".
3186 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3188 *) Fix various bugs revealed by running the NISCC test suite:
3190 Stop out of bounds reads in the ASN1 code when presented with
3191 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3193 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3195 If verify callback ignores invalid public key errors don't try to check
3196 certificate signature with the NULL public key.
3200 *) New -ignore_err option in ocsp application to stop the server
3201 exiting on the first error in a request.
3204 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3205 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3209 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3210 extra data after the compression methods not only for TLS 1.0
3211 but also for SSL 3.0 (as required by the specification).
3212 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3214 *) Change X509_certificate_type() to mark the key as exported/exportable
3215 when it's 512 *bits* long, not 512 bytes.
3218 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3219 blocks during encryption.
3222 *) Various fixes to base64 BIO and non blocking I/O. On write
3223 flushes were not handled properly if the BIO retried. On read
3224 data was not being buffered properly and had various logic bugs.
3225 This also affects blocking I/O when the data being decoded is a
3229 *) Various S/MIME bugfixes and compatibility changes:
3230 output correct application/pkcs7 MIME type if
3231 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3232 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3233 of files as .eml work). Correctly handle very long lines in MIME
3237 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3239 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3240 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3241 a protocol version number mismatch like a decryption error
3242 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3245 *) Turn on RSA blinding by default in the default implementation
3246 to avoid a timing attack. Applications that don't want it can call
3247 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3248 They would be ill-advised to do so in most cases.
3249 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3251 *) Change RSA blinding code so that it works when the PRNG is not
3252 seeded (in this case, the secret RSA exponent is abused as
3253 an unpredictable seed -- if it is not unpredictable, there
3254 is no point in blinding anyway). Make RSA blinding thread-safe
3255 by remembering the creator's thread ID in rsa->blinding and
3256 having all other threads use local one-time blinding factors
3257 (this requires more computation than sharing rsa->blinding, but
3258 avoids excessive locking; and if an RSA object is not shared
3259 between threads, blinding will still be very fast).
3262 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3263 ENGINE as defaults for all supported algorithms irrespective of
3264 the 'flags' parameter. 'flags' is now honoured, so applications
3265 should make sure they are passing it correctly.
3268 *) Target "mingw" now allows native Windows code to be generated in
3269 the Cygwin environment as well as with the MinGW compiler.
3272 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3274 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3275 via timing by performing a MAC computation even if incorrrect
3276 block cipher padding has been found. This is a countermeasure
3277 against active attacks where the attacker has to distinguish
3278 between bad padding and a MAC verification error. (CVE-2003-0078)
3280 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3281 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3282 Martin Vuagnoux (EPFL, Ilion)]
3284 *) Make the no-err option work as intended. The intention with no-err
3285 is not to have the whole error stack handling routines removed from
3286 libcrypto, it's only intended to remove all the function name and
3287 reason texts, thereby removing some of the footprint that may not
3288 be interesting if those errors aren't displayed anyway.
3290 NOTE: it's still possible for any application or module to have it's
3291 own set of error texts inserted. The routines are there, just not
3292 used by default when no-err is given.
3295 *) Add support for FreeBSD on IA64.
3296 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3298 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3299 Kerberos function mit_des_cbc_cksum(). Before this change,
3300 the value returned by DES_cbc_cksum() was like the one from
3301 mit_des_cbc_cksum(), except the bytes were swapped.
3302 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3304 *) Allow an application to disable the automatic SSL chain building.
3305 Before this a rather primitive chain build was always performed in
3306 ssl3_output_cert_chain(): an application had no way to send the
3307 correct chain if the automatic operation produced an incorrect result.
3309 Now the chain builder is disabled if either:
3311 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3313 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3315 The reasoning behind this is that an application would not want the
3316 auto chain building to take place if extra chain certificates are
3317 present and it might also want a means of sending no additional
3318 certificates (for example the chain has two certificates and the
3322 *) Add the possibility to build without the ENGINE framework.
3323 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3325 *) Under Win32 gmtime() can return NULL: check return value in
3326 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3329 *) DSA routines: under certain error conditions uninitialized BN objects
3330 could be freed. Solution: make sure initialization is performed early
3331 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3332 Nils Larsch <nla@trustcenter.de> via PR#459)
3335 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3336 checked on reconnect on the client side, therefore session resumption
3337 could still fail with a "ssl session id is different" error. This
3338 behaviour is masked when SSL_OP_ALL is used due to
3339 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3340 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3341 followup to PR #377.
3344 *) IA-32 assembler support enhancements: unified ELF targets, support
3345 for SCO/Caldera platforms, fix for Cygwin shared build.
3348 *) Add support for FreeBSD on sparc64. As a consequence, support for
3349 FreeBSD on non-x86 processors is separate from x86 processors on
3350 the config script, much like the NetBSD support.
3351 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3353 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3355 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3358 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3359 code (06) was taken as the first octet of the session ID and the last
3360 octet was ignored consequently. As a result SSLv2 client side session
3361 caching could not have worked due to the session ID mismatch between
3363 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3367 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3368 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3372 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3373 seems that in spite of existing for more than a year, many application
3374 author have done nothing to provide the necessary callbacks, which
3375 means that this particular engine will not work properly anywhere.
3376 This is a very unfortunate situation which forces us, in the name
3377 of usability, to give the hw_ncipher.c a static lock, which is part
3379 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3380 appear in 0.9.8 or later. We EXPECT application authors to have
3381 dealt properly with this when 0.9.8 is released (unless we actually
3382 make such changes in the libcrypto locking code that changes will
3383 have to be made anyway).
3386 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3387 octets have been read, EOF or an error occurs. Without this change
3388 some truncated ASN1 structures will not produce an error.
3391 *) Disable Heimdal support, since it hasn't been fully implemented.
3392 Still give the possibility to force the use of Heimdal, but with
3393 warnings and a request that patches get sent to openssl-dev.
3396 *) Add the VC-CE target, introduce the WINCE sysname, and add
3397 INSTALL.WCE and appropriate conditionals to make it build.
3398 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3400 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3401 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3402 edit numbers of the version.
3403 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3405 *) Introduce safe string copy and catenation functions
3406 (BUF_strlcpy() and BUF_strlcat()).
3407 [Ben Laurie (CHATS) and Richard Levitte]
3409 *) Avoid using fixed-size buffers for one-line DNs.
3410 [Ben Laurie (CHATS)]
3412 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3413 resizing buffers containing secrets, and use where appropriate.
3414 [Ben Laurie (CHATS)]
3416 *) Avoid using fixed size buffers for configuration file location.
3417 [Ben Laurie (CHATS)]
3419 *) Avoid filename truncation for various CA files.
3420 [Ben Laurie (CHATS)]
3422 *) Use sizeof in preference to magic numbers.
3423 [Ben Laurie (CHATS)]
3425 *) Avoid filename truncation in cert requests.
3426 [Ben Laurie (CHATS)]
3428 *) Add assertions to check for (supposedly impossible) buffer
3430 [Ben Laurie (CHATS)]
3432 *) Don't cache truncated DNS entries in the local cache (this could
3433 potentially lead to a spoofing attack).
3434 [Ben Laurie (CHATS)]
3436 *) Fix various buffers to be large enough for hex/decimal
3437 representations in a platform independent manner.
3438 [Ben Laurie (CHATS)]
3440 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3441 resizing buffers containing secrets, and use where appropriate.
3442 [Ben Laurie (CHATS)]
3444 *) Add BIO_indent() to avoid much slightly worrying code to do
3446 [Ben Laurie (CHATS)]
3448 *) Convert sprintf()/BIO_puts() to BIO_printf().
3449 [Ben Laurie (CHATS)]
3451 *) buffer_gets() could terminate with the buffer only half
3453 [Ben Laurie (CHATS)]
3455 *) Add assertions to prevent user-supplied crypto functions from
3456 overflowing internal buffers by having large block sizes, etc.
3457 [Ben Laurie (CHATS)]
3459 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3461 [Ben Laurie (CHATS)]
3463 *) Eliminate unused copy of key in RC4.
3464 [Ben Laurie (CHATS)]
3466 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3467 [Ben Laurie (CHATS)]
3469 *) Fix off-by-one error in EGD path.
3470 [Ben Laurie (CHATS)]
3472 *) If RANDFILE path is too long, ignore instead of truncating.
3473 [Ben Laurie (CHATS)]
3475 *) Eliminate unused and incorrectly sized X.509 structure
3477 [Ben Laurie (CHATS)]
3479 *) Eliminate unused and dangerous function knumber().
3480 [Ben Laurie (CHATS)]
3482 *) Eliminate unused and dangerous structure, KSSL_ERR.
3483 [Ben Laurie (CHATS)]
3485 *) Protect against overlong session ID context length in an encoded
3486 session object. Since these are local, this does not appear to be
3488 [Ben Laurie (CHATS)]
3490 *) Change from security patch (see 0.9.6e below) that did not affect
3491 the 0.9.6 release series:
3493 Remote buffer overflow in SSL3 protocol - an attacker could
3494 supply an oversized master key in Kerberos-enabled versions.
3496 [Ben Laurie (CHATS)]
3498 *) Change the SSL kerb5 codes to match RFC 2712.
3501 *) Make -nameopt work fully for req and add -reqopt switch.
3502 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3504 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3505 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3507 *) Make sure tests can be performed even if the corresponding algorithms
3508 have been removed entirely. This was also the last step to make
3509 OpenSSL compilable with DJGPP under all reasonable conditions.
3510 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3512 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3513 to allow version independent disabling of normally unselected ciphers,
3514 which may be activated as a side-effect of selecting a single cipher.
3516 (E.g., cipher list string "RSA" enables ciphersuites that are left
3517 out of "ALL" because they do not provide symmetric encryption.
3518 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3519 [Lutz Jaenicke, Bodo Moeller]
3521 *) Add appropriate support for separate platform-dependent build
3522 directories. The recommended way to make a platform-dependent
3523 build directory is the following (tested on Linux), maybe with
3526 # Place yourself outside of the OpenSSL source tree. In
3527 # this example, the environment variable OPENSSL_SOURCE
3528 # is assumed to contain the absolute OpenSSL source directory.
3529 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3530 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3531 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3532 mkdir -p `dirname $F`
3533 ln -s $OPENSSL_SOURCE/$F $F
3536 To be absolutely sure not to disturb the source tree, a "make clean"
3537 is a good thing. If it isn't successfull, don't worry about it,
3538 it probably means the source directory is very clean.
3541 *) Make sure any ENGINE control commands make local copies of string
3542 pointers passed to them whenever necessary. Otherwise it is possible
3543 the caller may have overwritten (or deallocated) the original string
3544 data when a later ENGINE operation tries to use the stored values.
3545 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3547 *) Improve diagnostics in file reading and command-line digests.
3548 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3550 *) Add AES modes CFB and OFB to the object database. Correct an
3551 error in AES-CFB decryption.
3554 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3555 allows existing EVP_CIPHER_CTX structures to be reused after
3556 calling EVP_*Final(). This behaviour is used by encryption
3557 BIOs and some applications. This has the side effect that
3558 applications must explicitly clean up cipher contexts with
3559 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3562 *) Check the values of dna and dnb in bn_mul_recursive before calling
3563 bn_mul_comba (a non zero value means the a or b arrays do not contain
3564 n2 elements) and fallback to bn_mul_normal if either is not zero.
3567 *) Fix escaping of non-ASCII characters when using the -subj option
3568 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3571 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3572 form for "surname", serialNumber has no short form.
3573 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3574 therefore remove "mail" short name for "internet 7".
3575 The OID for unique identifiers in X509 certificates is
3576 x500UniqueIdentifier, not uniqueIdentifier.
3577 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3580 *) Add an "init" command to the ENGINE config module and auto initialize
3581 ENGINEs. Without any "init" command the ENGINE will be initialized
3582 after all ctrl commands have been executed on it. If init=1 the
3583 ENGINE is initailized at that point (ctrls before that point are run
3584 on the uninitialized ENGINE and after on the initialized one). If
3585 init=0 then the ENGINE will not be iniatialized at all.
3588 *) Fix the 'app_verify_callback' interface so that the user-defined
3589 argument is actually passed to the callback: In the
3590 SSL_CTX_set_cert_verify_callback() prototype, the callback
3591 declaration has been changed from
3594 int (*cb)(X509_STORE_CTX *,void *);
3595 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3596 i=s->ctx->app_verify_callback(&ctx)
3597 has been changed into
3598 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3600 To update applications using SSL_CTX_set_cert_verify_callback(),
3601 a dummy argument can be added to their callback functions.
3602 [D. K. Smetters <smetters@parc.xerox.com>]
3604 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3605 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3607 *) Add and OPENSSL_LOAD_CONF define which will cause
3608 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3609 This allows older applications to transparently support certain
3610 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3611 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3612 load the config file and OPENSSL_add_all_algorithms_conf() which will
3613 always load it have also been added.
3616 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
3617 Adjust NIDs and EVP layer.
3618 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3620 *) Config modules support in openssl utility.
3622 Most commands now load modules from the config file,
3623 though in a few (such as version) this isn't done
3624 because it couldn't be used for anything.
3626 In the case of ca and req the config file used is
3627 the same as the utility itself: that is the -config
3628 command line option can be used to specify an
3632 *) Move default behaviour from OPENSSL_config(). If appname is NULL
3633 use "openssl_conf" if filename is NULL use default openssl config file.
3636 *) Add an argument to OPENSSL_config() to allow the use of an alternative
3637 config section name. Add a new flag to tolerate a missing config file
3638 and move code to CONF_modules_load_file().
3641 *) Support for crypto accelerator cards from Accelerated Encryption
3642 Processing, www.aep.ie. (Use engine 'aep')
3643 The support was copied from 0.9.6c [engine] and adapted/corrected
3644 to work with the new engine framework.
3645 [AEP Inc. and Richard Levitte]
3647 *) Support for SureWare crypto accelerator cards from Baltimore
3648 Technologies. (Use engine 'sureware')
3649 The support was copied from 0.9.6c [engine] and adapted
3650 to work with the new engine framework.
3653 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
3654 make the newer ENGINE framework commands for the CHIL engine work.
3655 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
3657 *) Make it possible to produce shared libraries on ReliantUNIX.
3658 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
3660 *) Add the configuration target debug-linux-ppro.
3661 Make 'openssl rsa' use the general key loading routines
3662 implemented in apps.c, and make those routines able to
3663 handle the key format FORMAT_NETSCAPE and the variant
3665 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3667 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3668 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3670 *) Add -keyform to rsautl, and document -engine.
3671 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3673 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3674 BIO_R_NO_SUCH_FILE error code rather than the generic
3675 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3678 *) Add new functions
3680 ERR_peek_last_error_line
3681 ERR_peek_last_error_line_data.
3682 These are similar to
3685 ERR_peek_error_line_data,
3686 but report on the latest error recorded rather than the first one
3687 still in the error queue.
3688 [Ben Laurie, Bodo Moeller]
3690 *) default_algorithms option in ENGINE config module. This allows things
3692 default_algorithms = ALL
3693 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3696 *) Prelminary ENGINE config module.
3699 *) New experimental application configuration code.
3702 *) Change the AES code to follow the same name structure as all other
3703 symmetric ciphers, and behave the same way. Move everything to
3704 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3705 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3707 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3708 [Ben Laurie and Theo de Raadt]
3710 *) Add option to output public keys in req command.
3711 [Massimiliano Pala madwolf@openca.org]
3713 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3714 (up to about 10% better than before for P-192 and P-224).
3717 *) New functions/macros
3719 SSL_CTX_set_msg_callback(ctx, cb)
3720 SSL_CTX_set_msg_callback_arg(ctx, arg)
3721 SSL_set_msg_callback(ssl, cb)
3722 SSL_set_msg_callback_arg(ssl, arg)
3724 to request calling a callback function
3726 void cb(int write_p, int version, int content_type,
3727 const void *buf, size_t len, SSL *ssl, void *arg)
3729 whenever a protocol message has been completely received
3730 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3731 protocol version according to which the SSL library interprets
3732 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3733 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3734 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3735 specification (change_cipher_spec(20), alert(21), handshake(22)).
3736 'buf' and 'len' point to the actual message, 'ssl' to the
3737 SSL object, and 'arg' is the application-defined value set by
3738 SSL[_CTX]_set_msg_callback_arg().
3740 'openssl s_client' and 'openssl s_server' have new '-msg' options
3741 to enable a callback that displays all protocol messages.
3744 *) Change the shared library support so shared libraries are built as
3745 soon as the corresponding static library is finished, and thereby get
3746 openssl and the test programs linked against the shared library.
3747 This still only happens when the keyword "shard" has been given to
3748 the configuration scripts.
3750 NOTE: shared library support is still an experimental thing, and
3751 backward binary compatibility is still not guaranteed.
3752 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3754 *) Add support for Subject Information Access extension.
3755 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3757 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3758 additional bytes when new memory had to be allocated, not just
3759 when reusing an existing buffer.
3762 *) New command line and configuration option 'utf8' for the req command.
3763 This allows field values to be specified as UTF8 strings.
3766 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3767 runs for the former and machine-readable output for the latter.
3770 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3771 of the e-mail address in the DN (i.e., it will go into a certificate
3772 extension only). The new configuration file option 'email_in_dn = no'
3773 has the same effect.
3774 [Massimiliano Pala madwolf@openca.org]
3776 *) Change all functions with names starting with des_ to be starting
3777 with DES_ instead. Add wrappers that are compatible with libdes,
3778 but are named _ossl_old_des_*. Finally, add macros that map the
3779 des_* symbols to the corresponding _ossl_old_des_* if libdes
3780 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3781 desired, the des_* symbols will be mapped to DES_*, with one
3784 Since we provide two compatibility mappings, the user needs to
3785 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3786 compatibility is desired. The default (i.e., when that macro
3787 isn't defined) is OpenSSL 0.9.6c compatibility.
3789 There are also macros that enable and disable the support of old
3790 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3791 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3792 are defined, the default will apply: to support the old des routines.
3794 In either case, one must include openssl/des.h to get the correct
3795 definitions. Do not try to just include openssl/des_old.h, that
3798 NOTE: This is a major break of an old API into a new one. Software
3799 authors are encouraged to switch to the DES_ style functions. Some
3800 time in the future, des_old.h and the libdes compatibility functions
3801 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
3802 default), and then completely removed.
3805 *) Test for certificates which contain unsupported critical extensions.
3806 If such a certificate is found during a verify operation it is
3807 rejected by default: this behaviour can be overridden by either
3808 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
3809 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
3810 X509_supported_extension() has also been added which returns 1 if a
3811 particular extension is supported.
3814 *) Modify the behaviour of EVP cipher functions in similar way to digests
3815 to retain compatibility with existing code.
3818 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
3819 compatibility with existing code. In particular the 'ctx' parameter does
3820 not have to be to be initialized before the call to EVP_DigestInit() and
3821 it is tidied up after a call to EVP_DigestFinal(). New function
3822 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
3823 EVP_MD_CTX_copy() changed to not require the destination to be
3824 initialized valid and new function EVP_MD_CTX_copy_ex() added which
3825 requires the destination to be valid.
3827 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
3828 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
3831 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
3832 so that complete 'Handshake' protocol structures are kept in memory
3833 instead of overwriting 'msg_type' and 'length' with 'body' data.
3836 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
3837 [Massimo Santin via Richard Levitte]
3839 *) Major restructuring to the underlying ENGINE code. This includes
3840 reduction of linker bloat, separation of pure "ENGINE" manipulation
3841 (initialisation, etc) from functionality dealing with implementations
3842 of specific crypto iterfaces. This change also introduces integrated
3843 support for symmetric ciphers and digest implementations - so ENGINEs
3844 can now accelerate these by providing EVP_CIPHER and EVP_MD
3845 implementations of their own. This is detailed in crypto/engine/README
3846 as it couldn't be adequately described here. However, there are a few
3847 API changes worth noting - some RSA, DSA, DH, and RAND functions that
3848 were changed in the original introduction of ENGINE code have now
3849 reverted back - the hooking from this code to ENGINE is now a good
3850 deal more passive and at run-time, operations deal directly with
3851 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
3852 dereferencing through an ENGINE pointer any more. Also, the ENGINE
3853 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
3854 they were not being used by the framework as there is no concept of a
3855 BIGNUM_METHOD and they could not be generalised to the new
3856 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
3857 ENGINE_cpy() has been removed as it cannot be consistently defined in
3861 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
3864 *) Change mkdef.pl to sort symbols that get the same entry number,
3865 and make sure the automatically generated functions ERR_load_*
3866 become part of libeay.num as well.
3869 *) New function SSL_renegotiate_pending(). This returns true once
3870 renegotiation has been requested (either SSL_renegotiate() call
3871 or HelloRequest/ClientHello receveived from the peer) and becomes
3872 false once a handshake has been completed.
3873 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
3874 sends a HelloRequest, but does not ensure that a handshake takes
3875 place. SSL_renegotiate_pending() is useful for checking if the
3876 client has followed the request.)
3879 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
3880 By default, clients may request session resumption even during
3881 renegotiation (if session ID contexts permit); with this option,
3882 session resumption is possible only in the first handshake.
3884 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
3885 more bits available for options that should not be part of
3886 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
3889 *) Add some demos for certificate and certificate request creation.
3892 *) Make maximum certificate chain size accepted from the peer application
3893 settable (SSL*_get/set_max_cert_list()), as proposed by
3894 "Douglas E. Engert" <deengert@anl.gov>.
3897 *) Add support for shared libraries for Unixware-7
3898 (Boyd Lynn Gerber <gerberb@zenez.com>).
3901 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
3902 be done prior to destruction. Use this to unload error strings from
3903 ENGINEs that load their own error strings. NB: This adds two new API
3904 functions to "get" and "set" this destroy handler in an ENGINE.
3907 *) Alter all existing ENGINE implementations (except "openssl" and
3908 "openbsd") to dynamically instantiate their own error strings. This
3909 makes them more flexible to be built both as statically-linked ENGINEs
3910 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
3911 Also, add stub code to each that makes building them as self-contained
3912 shared-libraries easier (see README.ENGINE).
3915 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
3916 implementations into applications that are completely implemented in
3917 self-contained shared-libraries. The "dynamic" ENGINE exposes control
3918 commands that can be used to configure what shared-library to load and
3919 to control aspects of the way it is handled. Also, made an update to
3920 the README.ENGINE file that brings its information up-to-date and
3921 provides some information and instructions on the "dynamic" ENGINE
3922 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
3925 *) Make it possible to unload ranges of ERR strings with a new
3926 "ERR_unload_strings" function.
3929 *) Add a copy() function to EVP_MD.
3932 *) Make EVP_MD routines take a context pointer instead of just the
3933 md_data void pointer.
3936 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
3937 that the digest can only process a single chunk of data
3938 (typically because it is provided by a piece of
3939 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
3940 is only going to provide a single chunk of data, and hence the
3941 framework needn't accumulate the data for oneshot drivers.
3944 *) As with "ERR", make it possible to replace the underlying "ex_data"
3945 functions. This change also alters the storage and management of global
3946 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
3947 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
3948 index counters. The API functions that use this state have been changed
3949 to take a "class_index" rather than pointers to the class's local STACK
3950 and counter, and there is now an API function to dynamically create new
3951 classes. This centralisation allows us to (a) plug a lot of the
3952 thread-safety problems that existed, and (b) makes it possible to clean
3953 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
3954 such data would previously have always leaked in application code and
3955 workarounds were in place to make the memory debugging turn a blind eye
3956 to it. Application code that doesn't use this new function will still
3957 leak as before, but their memory debugging output will announce it now
3958 rather than letting it slide.
3960 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
3961 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
3962 has a return value to indicate success or failure.
3965 *) Make it possible to replace the underlying "ERR" functions such that the
3966 global state (2 LHASH tables and 2 locks) is only used by the "default"
3967 implementation. This change also adds two functions to "get" and "set"
3968 the implementation prior to it being automatically set the first time
3969 any other ERR function takes place. Ie. an application can call "get",
3970 pass the return value to a module it has just loaded, and that module
3971 can call its own "set" function using that value. This means the
3972 module's "ERR" operations will use (and modify) the error state in the
3973 application and not in its own statically linked copy of OpenSSL code.
3976 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
3977 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
3978 the operation, and provides a more encapsulated way for external code
3979 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
3980 to use these functions rather than manually incrementing the counts.
3982 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
3985 *) Add EVP test program.
3988 *) Add symmetric cipher support to ENGINE. Expect the API to change!
3991 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
3992 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
3993 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
3994 These allow a CRL to be built without having to access X509_CRL fields
3995 directly. Modify 'ca' application to use new functions.
3998 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
3999 bug workarounds. Rollback attack detection is a security feature.
4000 The problem will only arise on OpenSSL servers when TLSv1 is not
4001 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
4002 Software authors not wanting to support TLSv1 will have special reasons
4003 for their choice and can explicitly enable this option.
4004 [Bodo Moeller, Lutz Jaenicke]
4006 *) Rationalise EVP so it can be extended: don't include a union of
4007 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
4008 (similar to those existing for EVP_CIPHER_CTX).
4013 EVP_MD_CTX_init(&md); /* new function call */
4014 EVP_DigestInit(&md, EVP_sha1());
4015 EVP_DigestUpdate(&md, in, len);
4016 EVP_DigestFinal(&md, out, NULL);
4017 EVP_MD_CTX_cleanup(&md); /* new function call */
4021 *) Make DES key schedule conform to the usual scheme, as well as
4022 correcting its structure. This means that calls to DES functions
4023 now have to pass a pointer to a des_key_schedule instead of a
4024 plain des_key_schedule (which was actually always a pointer
4027 des_key_schedule ks;
4029 des_set_key_checked(..., &ks);
4030 des_ncbc_encrypt(..., &ks, ...);
4032 (Note that a later change renames 'des_...' into 'DES_...'.)
4035 *) Initial reduction of linker bloat: the use of some functions, such as
4036 PEM causes large amounts of unused functions to be linked in due to
4037 poor organisation. For example pem_all.c contains every PEM function
4038 which has a knock on effect of linking in large amounts of (unused)
4039 ASN1 code. Grouping together similar functions and splitting unrelated
4040 functions prevents this.
4043 *) Cleanup of EVP macros.
4046 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
4047 correct _ecb suffix.
4050 *) Add initial OCSP responder support to ocsp application. The
4051 revocation information is handled using the text based index
4052 use by the ca application. The responder can either handle
4053 requests generated internally, supplied in files (for example
4054 via a CGI script) or using an internal minimal server.
4057 *) Add configuration choices to get zlib compression for TLS.
4060 *) Changes to Kerberos SSL for RFC 2712 compliance:
4061 1. Implemented real KerberosWrapper, instead of just using
4062 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
4063 2. Implemented optional authenticator field of KerberosWrapper.
4065 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
4066 and authenticator structs; see crypto/krb5/.
4068 Generalized Kerberos calls to support multiple Kerberos libraries.
4069 [Vern Staats <staatsvr@asc.hpc.mil>,
4070 Jeffrey Altman <jaltman@columbia.edu>
4071 via Richard Levitte]
4073 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
4074 already does with RSA. testdsa.h now has 'priv_key/pub_key'
4075 values for each of the key sizes rather than having just
4076 parameters (and 'speed' generating keys each time).
4079 *) Speed up EVP routines.
4082 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
4083 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
4084 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
4085 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
4087 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
4088 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
4089 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
4092 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
4094 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
4097 *) Added the OS2-EMX target.
4098 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
4100 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
4101 to support NCONF routines in extension code. New function CONF_set_nconf()
4102 to allow functions which take an NCONF to also handle the old LHASH
4103 structure: this means that the old CONF compatible routines can be
4104 retained (in particular wrt extensions) without having to duplicate the
4105 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
4108 *) Enhance the general user interface with mechanisms for inner control
4109 and with possibilities to have yes/no kind of prompts.
4112 *) Change all calls to low level digest routines in the library and
4113 applications to use EVP. Add missing calls to HMAC_cleanup() and
4114 don't assume HMAC_CTX can be copied using memcpy().
4115 [Verdon Walker <VWalker@novell.com>, Steve Henson]
4117 *) Add the possibility to control engines through control names but with
4118 arbitrary arguments instead of just a string.
4119 Change the key loaders to take a UI_METHOD instead of a callback
4120 function pointer. NOTE: this breaks binary compatibility with earlier
4121 versions of OpenSSL [engine].
4122 Adapt the nCipher code for these new conditions and add a card insertion
4126 *) Enhance the general user interface with mechanisms to better support
4127 dialog box interfaces, application-defined prompts, the possibility
4128 to use defaults (for example default passwords from somewhere else)
4129 and interrupts/cancellations.
4132 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
4133 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
4136 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
4137 tidy up some unnecessarily weird code in 'sk_new()').
4138 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
4140 *) Change the key loading routines for ENGINEs to use the same kind
4141 callback (pem_password_cb) as all other routines that need this
4145 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
4146 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
4147 than this minimum value is recommended.
4150 *) New random seeder for OpenVMS, using the system process statistics
4151 that are easily reachable.
4154 *) Windows apparently can't transparently handle global
4155 variables defined in DLLs. Initialisations such as:
4157 const ASN1_ITEM *it = &ASN1_INTEGER_it;
4159 wont compile. This is used by the any applications that need to
4160 declare their own ASN1 modules. This was fixed by adding the option
4161 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
4162 needed for static libraries under Win32.
4165 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
4166 setting of purpose and trust fields. New X509_STORE trust and
4167 purpose functions and tidy up setting in other SSL functions.
4170 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
4171 structure. These are inherited by X509_STORE_CTX when it is
4172 initialised. This allows various defaults to be set in the
4173 X509_STORE structure (such as flags for CRL checking and custom
4174 purpose or trust settings) for functions which only use X509_STORE_CTX
4175 internally such as S/MIME.
4177 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
4178 trust settings if they are not set in X509_STORE. This allows X509_STORE
4179 purposes and trust (in S/MIME for example) to override any set by default.
4181 Add command line options for CRL checking to smime, s_client and s_server
4185 *) Initial CRL based revocation checking. If the CRL checking flag(s)
4186 are set then the CRL is looked up in the X509_STORE structure and
4187 its validity and signature checked, then if the certificate is found
4188 in the CRL the verify fails with a revoked error.
4190 Various new CRL related callbacks added to X509_STORE_CTX structure.
4192 Command line options added to 'verify' application to support this.
4194 This needs some additional work, such as being able to handle multiple
4195 CRLs with different times, extension based lookup (rather than just
4196 by subject name) and ultimately more complete V2 CRL extension
4200 *) Add a general user interface API (crypto/ui/). This is designed
4201 to replace things like des_read_password and friends (backward
4202 compatibility functions using this new API are provided).
4203 The purpose is to remove prompting functions from the DES code
4204 section as well as provide for prompting through dialog boxes in
4205 a window system and the like.
4208 *) Add "ex_data" support to ENGINE so implementations can add state at a
4209 per-structure level rather than having to store it globally.
4212 *) Make it possible for ENGINE structures to be copied when retrieved by
4213 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
4214 This causes the "original" ENGINE structure to act like a template,
4215 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
4216 operational state can be localised to each ENGINE structure, despite the
4217 fact they all share the same "methods". New ENGINE structures returned in
4218 this case have no functional references and the return value is the single
4219 structural reference. This matches the single structural reference returned
4220 by ENGINE_by_id() normally, when it is incremented on the pre-existing
4224 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
4225 needs to match any other type at all we need to manually clear the
4229 *) Changes to the "openssl engine" utility to include;
4230 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
4231 about an ENGINE's available control commands.
4232 - executing control commands from command line arguments using the
4233 '-pre' and '-post' switches. '-post' is only used if '-t' is
4234 specified and the ENGINE is successfully initialised. The syntax for
4235 the individual commands are colon-separated, for example;
4236 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
4239 *) New dynamic control command support for ENGINEs. ENGINEs can now
4240 declare their own commands (numbers), names (strings), descriptions,
4241 and input types for run-time discovery by calling applications. A
projects / openssl.git / blob