5 Changes between 1.0.1 and 1.1.0 [xx XXX xxxx]
7 *) If a candidate issuer certificate is already part of the constructed
8 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
11 *) Improve forward-security support: add functions
13 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
14 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
16 for use by SSL/TLS servers; the callback function will be called whenever a
17 new session is created, and gets to decide whether the session may be
18 cached to make it resumable (return 0) or not (return 1). (As by the
19 SSL/TLS protocol specifications, the session_id sent by the server will be
20 empty to indicate that the session is not resumable; also, the server will
21 not generate RFC 4507 (RFC 5077) session tickets.)
23 A simple reasonable callback implementation is to return is_forward_secure.
24 This parameter will be set to 1 or 0 depending on the ciphersuite selected
25 by the SSL/TLS server library, indicating whether it can provide forward
27 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
29 *) Add Next Protocol Negotiation,
30 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
31 disabled with a no-npn flag to config or Configure. Code donated
33 [Adam Langley <agl@google.com> and Ben Laurie]
35 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
36 all platforms. Move ssize_t definition from e_os.h to the public
37 header file e_os2.h as it now appears in public header file cms.h
40 *) New function OPENSSL_gmtime_diff to find the difference in days
41 and seconds between two tm structures. This will be used to provide
42 additional functionality for ASN1_TIME.
45 *) New -sigopt option to the ca, req and x509 utilities. Additional
46 signature parameters can be passed using this option and in
50 *) Add RSA PSS signing function. This will generate and set the
51 appropriate AlgorithmIdentifiers for PSS based on those in the
52 corresponding EVP_MD_CTX structure. No application support yet.
55 *) Support for companion algorithm specific ASN1 signing routines.
56 New function ASN1_item_sign_ctx() signs a pre-initialised
57 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
58 the appropriate parameters.
61 *) Add new algorithm specific ASN1 verification initialisation function
62 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
63 handling will be the same no matter what EVP_PKEY_METHOD is used.
64 Add a PSS handler to support verification of PSS signatures: checked
65 against a number of sample certificates.
68 *) Add signature printing for PSS. Add PSS OIDs.
69 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
71 *) Add algorithm specific signature printing. An individual ASN1 method
72 can now print out signatures instead of the standard hex dump.
74 More complex signatures (e.g. PSS) can print out more meaningful
75 information. Include DSA version that prints out the signature
79 *) Add -trusted_first option which attempts to find certificates in the
80 trusted store even if an untrusted chain is also supplied.
83 *) Initial experimental support for explicitly trusted non-root CAs.
84 OpenSSL still tries to build a complete chain to a root but if an
85 intermediate CA has a trust setting included that is used. The first
86 setting is used: whether to trust or reject.
89 *) New -verify_name option in command line utilities to set verification
93 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
94 Add CMAC pkey methods.
97 *) Experiemental regnegotiation in s_server -www mode. If the client
98 browses /reneg connection is renegotiated. If /renegcert it is
99 renegotiated requesting a certificate.
102 *) Add an "external" session cache for debugging purposes to s_server. This
103 should help trace issues which normally are only apparent in deployed
104 multi-process servers.
107 *) Experiemental password based recipient info support for CMS library:
108 implementing RFC3211.
111 *) Split password based encryption into PBES2 and PBKDF2 functions. This
112 neatly separates the code into cipher and PBE sections and is required
113 for some algorithms that split PBES2 into separate pieces (such as
117 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
118 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
119 BIO_set_cipher() and some obscure PEM functions were changed so they
120 can now return an error. The RAND changes required a change to the
121 RAND_METHOD structure.
124 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
125 a gcc attribute to warn if the result of a function is ignored. This
126 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
127 whose return value is often ignored.
130 Changes between 1.0.0c and 1.0.1 [xx XXX xxxx]
132 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
135 *) Add EC_GFp_nistp224_method(), a 64-bit optimized implementation for
136 elliptic curve NIST-P224 with constant-time single point multiplication on
137 typical inputs. EC_GROUP_new_by_curve_name() will automatically use this
138 (while EC_GROUP_new_curve_GFp() currently won't and prefers the more
139 flexible implementations).
141 The implementation requires support for the nonstandard type __uint128_t,
142 and so is disabled by default. To include this in your build of OpenSSL,
143 use -DEC_NISTP224_64_GCC_128 on the Configure (or config) command line,
144 and run "make depend" (or "make update").
145 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
147 *) Permit abbreviated handshakes when renegotiating using the function
148 SSL_renegotiate_abbreviated().
149 [Robin Seggelmann <seggelmann@fh-muenster.de>]
151 *) Add call to ENGINE_register_all_complete() to
152 ENGINE_load_builtin_engines(), so some implementations get used
153 automatically instead of needing explicit application support.
156 *) Add support for TLS key exporter as described in RFC5705.
157 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
159 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
160 a few changes are required:
162 Add SSL_OP_NO_TLSv1_1 flag.
164 Update version checking logic to handle version 1.1.
165 Add explicit IV handling (ported from DTLS code).
166 Add command line options to s_client/s_server.
169 Changes between 1.0.0c and 1.0.0d [xx XXX xxxx]
171 *) Fix bug in string printing code: if *any* escaping is enabled we must
172 escape the escape character (backslash) or the resulting string is
176 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
178 *) Disable code workaround for ancient and obsolete Netscape browsers
179 and servers: an attacker can use it in a ciphersuite downgrade attack.
180 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
183 *) Fixed J-PAKE implementation error, originally discovered by
184 Sebastien Martini, further info and confirmation from Stefan
185 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
188 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
190 *) Fix extension code to avoid race conditions which can result in a buffer
191 overrun vulnerability: resumed sessions must not be modified as they can
192 be shared by multiple threads. CVE-2010-3864
195 *) Fix WIN32 build system to correctly link an ENGINE directory into
199 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
201 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
203 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
205 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
207 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
208 context. The operation can be customised via the ctrl mechanism in
209 case ENGINEs want to include additional functionality.
212 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
215 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
216 output hashes compatible with older versions of OpenSSL.
217 [Willy Weisz <weisz@vcpc.univie.ac.at>]
219 *) Fix compression algorithm handling: if resuming a session use the
220 compression algorithm of the resumed session instead of determining
221 it from client hello again. Don't allow server to change algorithm.
224 *) Add load_crls() function to apps tidying load_certs() too. Add option
225 to verify utility to allow additional CRLs to be included.
228 *) Update OCSP request code to permit adding custom headers to the request:
229 some responders need this.
232 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
234 [Julia Lawall <julia@diku.dk>]
236 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
237 needlessly dereferenced structures, used obsolete functions and
238 didn't handle all updated verify codes correctly.
241 *) Disable MD2 in the default configuration.
244 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
245 indicate the initial BIO being pushed or popped. This makes it possible
246 to determine whether the BIO is the one explicitly called or as a result
247 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
248 it handles reference counts correctly and doesn't zero out the I/O bio
249 when it is not being explicitly popped. WARNING: applications which
250 included workarounds for the old buggy behaviour will need to be modified
251 or they could free up already freed BIOs.
254 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
255 renaming to all platforms (within the 0.9.8 branch, this was
256 done conditionally on Netware platforms to avoid a name clash).
257 [Guenter <lists@gknw.net>]
259 *) Add ECDHE and PSK support to DTLS.
260 [Michael Tuexen <tuexen@fh-muenster.de>]
262 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
266 *) Add "missing" function EVP_MD_flags() (without this the only way to
267 retrieve a digest flags is by accessing the structure directly. Update
268 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
269 or cipher is registered as in the "from" argument. Print out all
270 registered digests in the dgst usage message instead of manually
271 attempting to work them out.
274 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
275 this allows the use of compression and extensions. Change default cipher
276 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
277 by default unless an application cipher string requests it.
280 *) Alter match criteria in PKCS12_parse(). It used to try to use local
281 key ids to find matching certificates and keys but some PKCS#12 files
282 don't follow the (somewhat unwritten) rules and this strategy fails.
283 Now just gather all certificates together and the first private key
284 then look for the first certificate that matches the key.
287 *) Support use of registered digest and cipher names for dgst and cipher
288 commands instead of having to add each one as a special case. So now
295 openssl dgst -sha256 foo
297 and this works for ENGINE based algorithms too.
301 *) Update Gost ENGINE to support parameter files.
302 [Victor B. Wagner <vitus@cryptocom.ru>]
304 *) Support GeneralizedTime in ca utility.
305 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
307 *) Enhance the hash format used for certificate directory links. The new
308 form uses the canonical encoding (meaning equivalent names will work
309 even if they aren't identical) and uses SHA1 instead of MD5. This form
310 is incompatible with the older format and as a result c_rehash should
311 be used to rebuild symbolic links.
314 *) Make PKCS#8 the default write format for private keys, replacing the
315 traditional format. This form is standardised, more secure and doesn't
316 include an implicit MD5 dependency.
319 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
320 committed to OpenSSL should pass this lot as a minimum.
323 *) Add session ticket override functionality for use by EAP-FAST.
324 [Jouni Malinen <j@w1.fi>]
326 *) Modify HMAC functions to return a value. Since these can be implemented
327 in an ENGINE errors can occur.
330 *) Type-checked OBJ_bsearch_ex.
333 *) Type-checked OBJ_bsearch. Also some constification necessitated
334 by type-checking. Still to come: TXT_DB, bsearch(?),
335 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
339 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
340 seconds to a tm structure directly, instead of going through OS
341 specific date routines. This avoids any issues with OS routines such
342 as the year 2038 bug. New *_adj() functions for ASN1 time structures
343 and X509_time_adj_ex() to cover the extended range. The existing
344 X509_time_adj() is still usable and will no longer have any date issues.
347 *) Delta CRL support. New use deltas option which will attempt to locate
348 and search any appropriate delta CRLs available.
350 This work was sponsored by Google.
353 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
354 code and add additional score elements. Validate alternate CRL paths
355 as part of the CRL checking and indicate a new error "CRL path validation
356 error" in this case. Applications wanting additional details can use
357 the verify callback and check the new "parent" field. If this is not
358 NULL CRL path validation is taking place. Existing applications wont
359 see this because it requires extended CRL support which is off by
362 This work was sponsored by Google.
365 *) Support for freshest CRL extension.
367 This work was sponsored by Google.
370 *) Initial indirect CRL support. Currently only supported in the CRLs
371 passed directly and not via lookup. Process certificate issuer
372 CRL entry extension and lookup CRL entries by bother issuer name
373 and serial number. Check and process CRL issuer entry in IDP extension.
375 This work was sponsored by Google.
378 *) Add support for distinct certificate and CRL paths. The CRL issuer
379 certificate is validated separately in this case. Only enabled if
380 an extended CRL support flag is set: this flag will enable additional
381 CRL functionality in future.
383 This work was sponsored by Google.
386 *) Add support for policy mappings extension.
388 This work was sponsored by Google.
391 *) Fixes to pathlength constraint, self issued certificate handling,
392 policy processing to align with RFC3280 and PKITS tests.
394 This work was sponsored by Google.
397 *) Support for name constraints certificate extension. DN, email, DNS
398 and URI types are currently supported.
400 This work was sponsored by Google.
403 *) To cater for systems that provide a pointer-based thread ID rather
404 than numeric, deprecate the current numeric thread ID mechanism and
405 replace it with a structure and associated callback type. This
406 mechanism allows a numeric "hash" to be extracted from a thread ID in
407 either case, and on platforms where pointers are larger than 'long',
408 mixing is done to help ensure the numeric 'hash' is usable even if it
409 can't be guaranteed unique. The default mechanism is to use "&errno"
410 as a pointer-based thread ID to distinguish between threads.
412 Applications that want to provide their own thread IDs should now use
413 CRYPTO_THREADID_set_callback() to register a callback that will call
414 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
416 Note that ERR_remove_state() is now deprecated, because it is tied
417 to the assumption that thread IDs are numeric. ERR_remove_state(0)
418 to free the current thread's error state should be replaced by
419 ERR_remove_thread_state(NULL).
421 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
422 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
423 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
424 application was previously providing a numeric thread callback that
425 was inappropriate for distinguishing threads, then uniqueness might
426 have been obtained with &errno that happened immediately in the
427 intermediate development versions of OpenSSL; this is no longer the
428 case, the numeric thread callback will now override the automatic use
430 [Geoff Thorpe, with help from Bodo Moeller]
432 *) Initial support for different CRL issuing certificates. This covers a
433 simple case where the self issued certificates in the chain exist and
434 the real CRL issuer is higher in the existing chain.
436 This work was sponsored by Google.
439 *) Removed effectively defunct crypto/store from the build.
442 *) Revamp of STACK to provide stronger type-checking. Still to come:
443 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
444 ASN1_STRING, CONF_VALUE.
447 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
448 RAM on SSL connections. This option can save about 34k per idle SSL.
451 *) Revamp of LHASH to provide stronger type-checking. Still to come:
452 STACK, TXT_DB, bsearch, qsort.
455 *) Initial support for Cryptographic Message Syntax (aka CMS) based
456 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
457 support for data, signedData, compressedData, digestedData and
458 encryptedData, envelopedData types included. Scripts to check against
459 RFC4134 examples draft and interop and consistency checks of many
460 content types and variants.
463 *) Add options to enc utility to support use of zlib compression BIO.
466 *) Extend mk1mf to support importing of options and assembly language
467 files from Configure script, currently only included in VC-WIN32.
468 The assembly language rules can now optionally generate the source
469 files from the associated perl scripts.
472 *) Implement remaining functionality needed to support GOST ciphersuites.
473 Interop testing has been performed using CryptoPro implementations.
474 [Victor B. Wagner <vitus@cryptocom.ru>]
476 *) s390x assembler pack.
479 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
483 *) Implement Opaque PRF Input TLS extension as specified in
484 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
485 official specification yet and no extension type assignment by
486 IANA exists, this extension (for now) will have to be explicitly
487 enabled when building OpenSSL by providing the extension number
488 to use. For example, specify an option
490 -DTLSEXT_TYPE_opaque_prf_input=0x9527
492 to the "config" or "Configure" script to enable the extension,
493 assuming extension number 0x9527 (which is a completely arbitrary
494 and unofficial assignment based on the MD5 hash of the Internet
495 Draft). Note that by doing so, you potentially lose
496 interoperability with other TLS implementations since these might
497 be using the same extension number for other purposes.
499 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
500 opaque PRF input value to use in the handshake. This will create
501 an interal copy of the length-'len' string at 'src', and will
502 return non-zero for success.
504 To get more control and flexibility, provide a callback function
507 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
508 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
512 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
515 Callback function 'cb' will be called in handshakes, and is
516 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
517 Argument 'arg' is for application purposes (the value as given to
518 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
519 be provided to the callback function). The callback function
520 has to return non-zero to report success: usually 1 to use opaque
521 PRF input just if possible, or 2 to enforce use of the opaque PRF
522 input. In the latter case, the library will abort the handshake
523 if opaque PRF input is not successfully negotiated.
525 Arguments 'peerinput' and 'len' given to the callback function
526 will always be NULL and 0 in the case of a client. A server will
527 see the client's opaque PRF input through these variables if
528 available (NULL and 0 otherwise). Note that if the server
529 provides an opaque PRF input, the length must be the same as the
530 length of the client's opaque PRF input.
532 Note that the callback function will only be called when creating
533 a new session (session resumption can resume whatever was
534 previously negotiated), and will not be called in SSL 2.0
535 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
536 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
537 for applications that need to enforce opaque PRF input.
541 *) Update ssl code to support digests other than SHA1+MD5 for handshake
544 [Victor B. Wagner <vitus@cryptocom.ru>]
546 *) Add RFC4507 support to OpenSSL. This includes the corrections in
547 RFC4507bis. The encrypted ticket format is an encrypted encoded
548 SSL_SESSION structure, that way new session features are automatically
551 If a client application caches session in an SSL_SESSION structure
552 support is transparent because tickets are now stored in the encoded
555 The SSL_CTX structure automatically generates keys for ticket
556 protection in servers so again support should be possible
557 with no application modification.
559 If a client or server wishes to disable RFC4507 support then the option
560 SSL_OP_NO_TICKET can be set.
562 Add a TLS extension debugging callback to allow the contents of any client
563 or server extensions to be examined.
565 This work was sponsored by Google.
568 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
569 OpenSSL should now compile cleanly on gcc 4.2
570 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
572 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
573 support including streaming MAC support: this is required for GOST
575 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
577 *) Add option -stream to use PKCS#7 streaming in smime utility. New
578 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
579 to output in BER and PEM format.
582 *) Experimental support for use of HMAC via EVP_PKEY interface. This
583 allows HMAC to be handled via the EVP_DigestSign*() interface. The
584 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
585 ENGINE support for HMAC keys which are unextractable. New -mac and
586 -macopt options to dgst utility.
589 *) New option -sigopt to dgst utility. Update dgst to use
590 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
591 alternative signing paramaters such as X9.31 or PSS in the dgst
595 *) Change ssl_cipher_apply_rule(), the internal function that does
596 the work each time a ciphersuite string requests enabling
597 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
598 removing ("!foo+bar") a class of ciphersuites: Now it maintains
599 the order of disabled ciphersuites such that those ciphersuites
600 that most recently went from enabled to disabled not only stay
601 in order with respect to each other, but also have higher priority
602 than other disabled ciphersuites the next time ciphersuites are
605 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
606 the same ciphersuites as with "HIGH" alone, but in a specific
607 order where the PSK ciphersuites come first (since they are the
608 most recently disabled ciphersuites when "HIGH" is parsed).
610 Also, change ssl_create_cipher_list() (using this new
611 funcionality) such that between otherwise identical
612 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
616 *) Change ssl_create_cipher_list() so that it automatically
617 arranges the ciphersuites in reasonable order before starting
618 to process the rule string. Thus, the definition for "DEFAULT"
619 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
620 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
621 This makes it much easier to arrive at a reasonable default order
622 in applications for which anonymous ciphers are OK (meaning
623 that you can't actually use DEFAULT).
624 [Bodo Moeller; suggested by Victor Duchovni]
626 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
627 processing) into multiple integers instead of setting
628 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
629 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
630 (These masks as well as the individual bit definitions are hidden
631 away into the non-exported interface ssl/ssl_locl.h, so this
632 change to the definition of the SSL_CIPHER structure shouldn't
633 affect applications.) This give us more bits for each of these
634 categories, so there is no longer a need to coagulate AES128 and
635 AES256 into a single algorithm bit, and to coagulate Camellia128
636 and Camellia256 into a single algorithm bit, which has led to all
639 Thus, among other things, the kludge introduced in 0.9.7m and
640 0.9.8e for masking out AES256 independently of AES128 or masking
641 out Camellia256 independently of AES256 is not needed here in 0.9.9.
643 With the change, we also introduce new ciphersuite aliases that
644 so far were missing: "AES128", "AES256", "CAMELLIA128", and
648 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
649 Use the leftmost N bytes of the signature input if the input is
650 larger than the prime q (with N being the size in bytes of q).
653 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
654 it yet and it is largely untested.
657 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
660 *) Initial incomplete changes to avoid need for function casts in OpenSSL
661 some compilers (gcc 4.2 and later) reject their use. Safestack is
662 reimplemented. Update ASN1 to avoid use of legacy functions.
665 *) Win32/64 targets are linked with Winsock2.
668 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
669 to external functions. This can be used to increase CRL handling
670 efficiency especially when CRLs are very large by (for example) storing
671 the CRL revoked certificates in a database.
674 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
675 new CRLs added to a directory can be used. New command line option
676 -verify_return_error to s_client and s_server. This causes real errors
677 to be returned by the verify callback instead of carrying on no matter
678 what. This reflects the way a "real world" verify callback would behave.
681 *) GOST engine, supporting several GOST algorithms and public key formats.
682 Kindly donated by Cryptocom.
685 *) Partial support for Issuing Distribution Point CRL extension. CRLs
686 partitioned by DP are handled but no indirect CRL or reason partitioning
687 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
688 selected via a scoring technique which handles IDP and AKID in CRLs.
691 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
692 will ultimately be used for all verify operations: this will remove the
693 X509_STORE dependency on certificate verification and allow alternative
694 lookup methods. X509_STORE based implementations of these two callbacks.
697 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
698 Modify get_crl() to find a valid (unexpired) CRL if possible.
701 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
702 this would be called X509_CRL_cmp() but that name is already used by
703 a function that just compares CRL issuer names. Cache several CRL
704 extensions in X509_CRL structure and cache CRLDP in X509.
707 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
708 this maps equivalent X509_NAME structures into a consistent structure.
709 Name comparison can then be performed rapidly using memcmp().
712 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
716 *) Allow digests to supply their own micalg string for S/MIME type using
717 the ctrl EVP_MD_CTRL_MICALG.
720 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
721 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
722 ctrl. It can then customise the structure before and/or after signing
726 *) New function OBJ_add_sigid() to allow application defined signature OIDs
727 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
728 to free up any added signature OIDs.
731 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
732 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
733 digest and cipher tables. New options added to openssl utility:
734 list-message-digest-algorithms and list-cipher-algorithms.
737 *) Change the array representation of binary polynomials: the list
738 of degrees of non-zero coefficients is now terminated with -1.
739 Previously it was terminated with 0, which was also part of the
740 value; thus, the array representation was not applicable to
741 polynomials where t^0 has coefficient zero. This change makes
742 the array representation useful in a more general context.
745 *) Various modifications and fixes to SSL/TLS cipher string
746 handling. For ECC, the code now distinguishes between fixed ECDH
747 with RSA certificates on the one hand and with ECDSA certificates
748 on the other hand, since these are separate ciphersuites. The
749 unused code for Fortezza ciphersuites has been removed.
751 For consistency with EDH, ephemeral ECDH is now called "EECDH"
752 (not "ECDHE"). For consistency with the code for DH
753 certificates, use of ECDH certificates is now considered ECDH
754 authentication, not RSA or ECDSA authentication (the latter is
755 merely the CA's signing algorithm and not actively used in the
758 The temporary ciphersuite alias "ECCdraft" is no longer
759 available, and ECC ciphersuites are no longer excluded from "ALL"
760 and "DEFAULT". The following aliases now exist for RFC 4492
761 ciphersuites, most of these by analogy with the DH case:
763 kECDHr - ECDH cert, signed with RSA
764 kECDHe - ECDH cert, signed with ECDSA
765 kECDH - ECDH cert (signed with either RSA or ECDSA)
766 kEECDH - ephemeral ECDH
767 ECDH - ECDH cert or ephemeral ECDH
773 AECDH - anonymous ECDH
774 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
778 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
779 Use correct micalg parameters depending on digest(s) in signed message.
782 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
783 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
786 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
787 an engine to register a method. Add ENGINE lookups for methods and
788 functional reference processing.
791 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
792 EVP_{Sign,Verify}* which allow an application to customise the signature
796 *) New -resign option to smime utility. This adds one or more signers
797 to an existing PKCS#7 signedData structure. Also -md option to use an
798 alternative message digest algorithm for signing.
801 *) Tidy up PKCS#7 routines and add new functions to make it easier to
802 create PKCS7 structures containing multiple signers. Update smime
803 application to support multiple signers.
806 *) New -macalg option to pkcs12 utility to allow setting of an alternative
810 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
811 Reorganize PBE internals to lookup from a static table using NIDs,
812 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
813 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
814 PRF which will be automatically used with PBES2.
817 *) Replace the algorithm specific calls to generate keys in "req" with the
821 *) Update PKCS#7 enveloped data routines to use new API. This is now
822 supported by any public key method supporting the encrypt operation. A
823 ctrl is added to allow the public key algorithm to examine or modify
824 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
828 *) Add a ctrl to asn1 method to allow a public key algorithm to express
829 a default digest type to use. In most cases this will be SHA1 but some
830 algorithms (such as GOST) need to specify an alternative digest. The
831 return value indicates how strong the prefernce is 1 means optional and
832 2 is mandatory (that is it is the only supported type). Modify
833 ASN1_item_sign() to accept a NULL digest argument to indicate it should
834 use the default md. Update openssl utilities to use the default digest
835 type for signing if it is not explicitly indicated.
838 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
839 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
840 signing method from the key type. This effectively removes the link
841 between digests and public key types.
844 *) Add an OID cross reference table and utility functions. Its purpose is to
845 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
846 rsaEncryption. This will allow some of the algorithm specific hackery
847 needed to use the correct OID to be removed.
850 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
851 structures for PKCS7_sign(). They are now set up by the relevant public
855 *) Add provisional EC pkey method with support for ECDSA and ECDH.
858 *) Add support for key derivation (agreement) in the API, DH method and
862 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
863 public and private key formats. As a side effect these add additional
864 command line functionality not previously available: DSA signatures can be
865 generated and verified using pkeyutl and DH key support and generation in
870 [Oliver Tappe <zooey@hirschkaefer.de>]
872 *) New make target "install_html_docs" installs HTML renditions of the
874 [Oliver Tappe <zooey@hirschkaefer.de>]
876 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
877 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
878 support key and parameter generation and add initial key generation
879 functionality for RSA.
882 *) Add functions for main EVP_PKEY_method operations. The undocumented
883 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
884 EVP_PKEY_{encrypt,decrypt}_old.
887 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
888 key API, doesn't do much yet.
891 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
892 public key algorithms. New option to openssl utility:
893 "list-public-key-algorithms" to print out info.
896 *) Implement the Supported Elliptic Curves Extension for
897 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
900 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
901 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
904 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
905 utilities such as rsa, dsa, dsaparam etc except they process any key
909 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
910 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
911 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
915 *) Initial support for pluggable public key ASN1.
916 De-spaghettify the public key ASN1 handling. Move public and private
917 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
918 algorithm specific handling to a single module within the relevant
919 algorithm directory. Add functions to allow (near) opaque processing
920 of public and private key structures.
923 *) Implement the Supported Point Formats Extension for
924 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
927 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
928 for the psk identity [hint] and the psk callback functions to the
929 SSL_SESSION, SSL and SSL_CTX structure.
932 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
936 SSL_CTX_use_psk_identity_hint
937 SSL_get_psk_identity_hint
939 SSL_use_psk_identity_hint
941 [Mika Kousa and Pasi Eronen of Nokia Corporation]
943 *) Add RFC 3161 compliant time stamp request creation, response generation
944 and response verification functionality.
945 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
947 *) Add initial support for TLS extensions, specifically for the server_name
948 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
949 have new members for a host name. The SSL data structure has an
950 additional member SSL_CTX *initial_ctx so that new sessions can be
951 stored in that context to allow for session resumption, even after the
952 SSL has been switched to a new SSL_CTX in reaction to a client's
953 server_name extension.
955 New functions (subject to change):
958 SSL_get_servername_type()
961 New CTRL codes and macros (subject to change):
963 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
964 - SSL_CTX_set_tlsext_servername_callback()
965 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
966 - SSL_CTX_set_tlsext_servername_arg()
967 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
969 openssl s_client has a new '-servername ...' option.
971 openssl s_server has new options '-servername_host ...', '-cert2 ...',
972 '-key2 ...', '-servername_fatal' (subject to change). This allows
973 testing the HostName extension for a specific single host name ('-cert'
974 and '-key' remain fallbacks for handshakes without HostName
975 negotiation). If the unrecogninzed_name alert has to be sent, this by
976 default is a warning; it becomes fatal with the '-servername_fatal'
979 [Peter Sylvester, Remy Allais, Christophe Renou]
981 *) Whirlpool hash implementation is added.
984 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
985 bn(64,32). Because of instruction set limitations it doesn't have
986 any negative impact on performance. This was done mostly in order
987 to make it possible to share assembler modules, such as bn_mul_mont
988 implementations, between 32- and 64-bit builds without hassle.
991 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
992 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
996 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
997 dedicated Montgomery multiplication procedure, is introduced.
998 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
999 "64-bit" performance on certain 32-bit targets.
1002 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1003 in SSL structures. New SSL ctrl to set maximum send fragment size.
1004 Save memory by seeting the I/O buffer sizes dynamically instead of
1005 using the maximum available value.
1008 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1009 in addition to the text details.
1012 *) Very, very preliminary EXPERIMENTAL support for printing of general
1013 ASN1 structures. This currently produces rather ugly output and doesn't
1014 handle several customised structures at all.
1017 *) Integrated support for PVK file format and some related formats such
1018 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1019 these in the 'rsa' and 'dsa' utilities.
1022 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1025 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1026 place for the (very old) "NETSCAPE" format certificates which are now
1027 handled using new ASN1 code equivalents.
1030 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1031 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1032 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1035 *) Modify CRL distribution points extension code to print out previously
1036 unsupported fields. Enhance extension setting code to allow setting of
1040 *) Add print and set support for Issuing Distribution Point CRL extension.
1043 *) Change 'Configure' script to enable Camellia by default.
1046 Changes between 0.9.8o and 0.9.8p [xx XXX xxxx]
1048 *) Fix extension code to avoid race conditions which can result in a buffer
1049 overrun vulnerability: resumed sessions must not be modified as they can
1050 be shared by multiple threads. CVE-2010-3864
1052 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1055 *) Don't reencode certificate when calculating signature: cache and use
1056 the original encoding instead. This makes signature verification of
1057 some broken encodings work correctly.
1060 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1061 is also one of the inputs.
1062 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1064 *) Don't repeatedly append PBE algorithms to table if they already exist.
1065 Sort table on each new add. This effectively makes the table read only
1066 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1070 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1072 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1075 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1076 access or freeing data twice (CVE-2010-0742)
1077 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1079 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1080 common in certificates and some applications which only call
1081 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1085 Reduce copying into .apps and .test in makevms.com
1086 Don't try to use blank CA certificate in CA.com
1087 Allow use of C files from original directories in maketests.com
1088 [Steven M. Schweda" <sms@antinode.info>]
1090 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1092 *) When rejecting SSL/TLS records due to an incorrect version number, never
1093 update s->server with a new major version number. As of
1094 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1095 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1096 the previous behavior could result in a read attempt at NULL when
1097 receiving specific incorrect SSL/TLS records once record payload
1098 protection is active. (CVE-2010-0740)
1099 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1101 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1102 could be crashed if the relevant tables were not present (e.g. chrooted).
1103 [Tomas Hoger <thoger@redhat.com>]
1105 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1107 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1108 [Martin Olsson, Neel Mehta]
1110 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1111 accommodate for stack sorting, always a write lock!).
1114 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1115 excessive delays in the RAND_poll(): over a minute. As a workaround
1116 include a time check in the inner Heap32Next loop too.
1119 *) The code that handled flushing of data in SSL/TLS originally used the
1120 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1121 the problem outlined in PR#1949. The fix suggested there however can
1122 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1123 of Apache). So instead simplify the code to flush unconditionally.
1124 This should be fine since flushing with no data to flush is a no op.
1127 *) Handle TLS versions 2.0 and later properly and correctly use the
1128 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1129 off ancient servers have a habit of sticking around for a while...
1132 *) Modify compression code so it frees up structures without using the
1133 ex_data callbacks. This works around a problem where some applications
1134 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1135 restarting) then use compression (e.g. SSL with compression) later.
1136 This results in significant per-connection memory leaks and
1137 has caused some security issues including CVE-2008-1678 and
1141 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1142 change when encrypting or decrypting.
1145 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1146 connect and renegotiate with servers which do not support RI.
1147 Until RI is more widely deployed this option is enabled by default.
1150 *) Add "missing" ssl ctrls to clear options and mode.
1153 *) If client attempts to renegotiate and doesn't support RI respond with
1154 a no_renegotiation alert as required by RFC5746. Some renegotiating
1155 TLS clients will continue a connection gracefully when they receive
1156 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1157 waiting for a server hello which it will never receive. Now we treat a
1158 received no_renegotiation alert as a fatal error. This is because
1159 applications requesting a renegotiation might well expect it to succeed
1160 and would have no code in place to handle the server denying it so the
1161 only safe thing to do is to terminate the connection.
1164 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1165 peer supports secure renegotiation and 0 otherwise. Print out peer
1166 renegotiation support in s_client/s_server.
1169 *) Replace the highly broken and deprecated SPKAC certification method with
1170 the updated NID creation version. This should correctly handle UTF8.
1173 *) Implement RFC5746. Re-enable renegotiation but require the extension
1174 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1175 turns out to be a bad idea. It has been replaced by
1176 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1177 SSL_CTX_set_options(). This is really not recommended unless you
1178 know what you are doing.
1179 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1181 *) Fixes to stateless session resumption handling. Use initial_ctx when
1182 issuing and attempting to decrypt tickets in case it has changed during
1183 servername handling. Use a non-zero length session ID when attempting
1184 stateless session resumption: this makes it possible to determine if
1185 a resumption has occurred immediately after receiving server hello
1186 (several places in OpenSSL subtly assume this) instead of later in
1190 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1191 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1192 fixes for a few places where the return code is not checked
1194 [Julia Lawall <julia@diku.dk>]
1196 *) Add --strict-warnings option to Configure script to include devteam
1197 warnings in other configurations.
1200 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1201 makes it possible to install openssl libraries in locations which
1202 have names other than "lib", for example "/usr/lib64" which some
1204 [Steve Henson, based on patch from Jeremy Utley]
1206 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1207 X690 8.9.12 and can produce some misleading textual output of OIDs.
1208 [Steve Henson, reported by Dan Kaminsky]
1210 *) Delete MD2 from algorithm tables. This follows the recommendation in
1211 several standards that it is not used in new applications due to
1212 several cryptographic weaknesses. For binary compatibility reasons
1213 the MD2 API is still compiled in by default.
1216 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1220 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1221 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1223 [Guenter <lists@gknw.net>]
1225 *) Fix the server certificate chain building code to use X509_verify_cert(),
1226 it used to have an ad-hoc builder which was unable to cope with anything
1227 other than a simple chain.
1228 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1230 *) Don't check self signed certificate signatures in X509_verify_cert()
1231 by default (a flag can override this): it just wastes time without
1232 adding any security. As a useful side effect self signed root CAs
1233 with non-FIPS digests are now usable in FIPS mode.
1236 *) In dtls1_process_out_of_seq_message() the check if the current message
1237 is already buffered was missing. For every new message was memory
1238 allocated, allowing an attacker to perform an denial of service attack
1239 with sending out of seq handshake messages until there is no memory
1240 left. Additionally every future messege was buffered, even if the
1241 sequence number made no sense and would be part of another handshake.
1242 So only messages with sequence numbers less than 10 in advance will be
1243 buffered. (CVE-2009-1378)
1244 [Robin Seggelmann, discovered by Daniel Mentz]
1246 *) Records are buffered if they arrive with a future epoch to be
1247 processed after finishing the corresponding handshake. There is
1248 currently no limitation to this buffer allowing an attacker to perform
1249 a DOS attack with sending records with future epochs until there is no
1250 memory left. This patch adds the pqueue_size() function to detemine
1251 the size of a buffer and limits the record buffer to 100 entries.
1253 [Robin Seggelmann, discovered by Daniel Mentz]
1255 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1256 parent structure is freed. (CVE-2009-1379)
1259 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1260 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1263 [Ilya O. <vrghost@gmail.com>]
1265 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1267 *) Disable renegotiation completely - this fixes a severe security
1268 problem (CVE-2009-3555) at the cost of breaking all
1269 renegotiation. Renegotiation can be re-enabled by setting
1270 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1271 run-time. This is really not recommended unless you know what
1275 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1277 *) Don't set val to NULL when freeing up structures, it is freed up by
1278 underlying code. If sizeof(void *) > sizeof(long) this can result in
1279 zeroing past the valid field. (CVE-2009-0789)
1280 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1282 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1283 checked correctly. This would allow some invalid signed attributes to
1284 appear to verify correctly. (CVE-2009-0591)
1285 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1287 *) Reject UniversalString and BMPString types with invalid lengths. This
1288 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1289 a legal length. (CVE-2009-0590)
1292 *) Set S/MIME signing as the default purpose rather than setting it
1293 unconditionally. This allows applications to override it at the store
1297 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1298 to handle some structures.
1301 *) Improve efficiency of mem_gets: don't search whole buffer each time
1303 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1305 *) New -hex option for openssl rand.
1308 *) Print out UTF8String and NumericString when parsing ASN1.
1311 *) Support NumericString type for name components.
1314 *) Allow CC in the environment to override the automatically chosen
1315 compiler. Note that nothing is done to ensure flags work with the
1319 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1321 *) Properly check EVP_VerifyFinal() and similar return values
1323 [Ben Laurie, Bodo Moeller, Google Security Team]
1325 *) Enable TLS extensions by default.
1328 *) Allow the CHIL engine to be loaded, whether the application is
1329 multithreaded or not. (This does not release the developer from the
1330 obligation to set up the dynamic locking callbacks.)
1331 [Sander Temme <sander@temme.net>]
1333 *) Use correct exit code if there is an error in dgst command.
1334 [Steve Henson; problem pointed out by Roland Dirlewanger]
1336 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1337 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1340 *) Add experimental JPAKE support, including demo authentication in
1341 s_client and s_server.
1344 *) Set the comparison function in v3_addr_canonize().
1345 [Rob Austein <sra@hactrn.net>]
1347 *) Add support for XMPP STARTTLS in s_client.
1348 [Philip Paeps <philip@freebsd.org>]
1350 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1351 to ensure that even with this option, only ciphersuites in the
1352 server's preference list will be accepted. (Note that the option
1353 applies only when resuming a session, so the earlier behavior was
1354 just about the algorithm choice for symmetric cryptography.)
1357 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1359 *) Fix NULL pointer dereference if a DTLS server received
1360 ChangeCipherSpec as first record (CVE-2009-1386).
1363 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1364 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1367 *) The fix in 0.9.8c that supposedly got rid of unsafe
1368 double-checked locking was incomplete for RSA blinding,
1369 addressing just one layer of what turns out to have been
1370 doubly unsafe triple-checked locking.
1372 So now fix this for real by retiring the MONT_HELPER macro
1373 in crypto/rsa/rsa_eay.c.
1375 [Bodo Moeller; problem pointed out by Marius Schilder]
1377 *) Various precautionary measures:
1379 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1381 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1382 (NB: This would require knowledge of the secret session ticket key
1383 to exploit, in which case you'd be SOL either way.)
1385 - Change bn_nist.c so that it will properly handle input BIGNUMs
1386 outside the expected range.
1388 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1391 [Neel Mehta, Bodo Moeller]
1393 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1394 the load fails. Useful for distros.
1395 [Ben Laurie and the FreeBSD team]
1397 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1400 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1403 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1405 This work was sponsored by Logica.
1408 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1409 keystores. Support for SSL/TLS client authentication too.
1410 Not compiled unless enable-capieng specified to Configure.
1412 This work was sponsored by Logica.
1415 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1416 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1417 attribute creation routines such as certifcate requests and PKCS#12
1421 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1423 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1424 handshake which could lead to a cilent crash as found using the
1425 Codenomicon TLS test suite (CVE-2008-1672)
1426 [Steve Henson, Mark Cox]
1428 *) Fix double free in TLS server name extensions which could lead to
1429 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1432 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1434 Clear the error queue to ensure that error entries left from
1435 older function calls do not interfere with the correct operation.
1436 [Lutz Jaenicke, Erik de Castro Lopo]
1438 *) Remove root CA certificates of commercial CAs:
1440 The OpenSSL project does not recommend any specific CA and does not
1441 have any policy with respect to including or excluding any CA.
1442 Therefore it does not make any sense to ship an arbitrary selection
1443 of root CA certificates with the OpenSSL software.
1446 *) RSA OAEP patches to fix two separate invalid memory reads.
1447 The first one involves inputs when 'lzero' is greater than
1448 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1449 before the beginning of from). The second one involves inputs where
1450 the 'db' section contains nothing but zeroes (there is a one-byte
1451 invalid read after the end of 'db').
1452 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1454 *) Partial backport from 0.9.9-dev:
1456 Introduce bn_mul_mont (dedicated Montgomery multiplication
1457 procedure) as a candidate for BIGNUM assembler implementation.
1458 While 0.9.9-dev uses assembler for various architectures, only
1459 x86_64 is available by default here in the 0.9.8 branch, and
1460 32-bit x86 is available through a compile-time setting.
1462 To try the 32-bit x86 assembler implementation, use Configure
1463 option "enable-montasm" (which exists only for this backport).
1465 As "enable-montasm" for 32-bit x86 disclaims code stability
1466 anyway, in this constellation we activate additional code
1467 backported from 0.9.9-dev for further performance improvements,
1468 namely BN_from_montgomery_word. (To enable this otherwise,
1469 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1471 [Andy Polyakov (backport partially by Bodo Moeller)]
1473 *) Add TLS session ticket callback. This allows an application to set
1474 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1475 values. This is useful for key rollover for example where several key
1476 sets may exist with different names.
1479 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1480 This was broken until now in 0.9.8 releases, such that the only way
1481 a registered ENGINE could be used (assuming it initialises
1482 successfully on the host) was to explicitly set it as the default
1483 for the relevant algorithms. This is in contradiction with 0.9.7
1484 behaviour and the documentation. With this fix, when an ENGINE is
1485 registered into a given algorithm's table of implementations, the
1486 'uptodate' flag is reset so that auto-discovery will be used next
1487 time a new context for that algorithm attempts to select an
1489 [Ian Lister (tweaked by Geoff Thorpe)]
1491 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1492 implemention in the following ways:
1494 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1497 Lack of BER streaming support means one pass streaming processing is
1498 only supported if data is detached: setting the streaming flag is
1499 ignored for embedded content.
1501 CMS support is disabled by default and must be explicitly enabled
1502 with the enable-cms configuration option.
1505 *) Update the GMP engine glue to do direct copies between BIGNUM and
1506 mpz_t when openssl and GMP use the same limb size. Otherwise the
1507 existing "conversion via a text string export" trick is still used.
1508 [Paul Sheer <paulsheer@gmail.com>]
1510 *) Zlib compression BIO. This is a filter BIO which compressed and
1511 uncompresses any data passed through it.
1514 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1515 RFC3394 compatible AES key wrapping.
1518 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1519 sets string data without copying. X509_ALGOR_set0() and
1520 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1521 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1522 from an X509_ATTRIBUTE structure optionally checking it occurs only
1523 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1527 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1528 to get the expected BN_FLG_CONSTTIME behavior.
1529 [Bodo Moeller (Google)]
1533 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1534 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1535 - added some more tests to do_tests.pl
1536 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1537 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1538 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1539 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1540 - various changes to netware.pl to enable gcc-cross builds on Win32
1542 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1543 - various changes to fix missing prototype warnings
1544 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1545 - added AES, WHIRLPOOL and CPUID assembler code to build files
1546 - added missing AES assembler make rules to mk1mf.pl
1547 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1548 [Guenter Knauf <eflash@gmx.net>]
1550 *) Implement certificate status request TLS extension defined in RFC3546.
1551 A client can set the appropriate parameters and receive the encoded
1552 OCSP response via a callback. A server can query the supplied parameters
1553 and set the encoded OCSP response in the callback. Add simplified examples
1554 to s_client and s_server.
1557 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1559 *) Fix various bugs:
1560 + Binary incompatibility of ssl_ctx_st structure
1561 + DTLS interoperation with non-compliant servers
1562 + Don't call get_session_cb() without proposed session
1563 + Fix ia64 assembler code
1564 [Andy Polyakov, Steve Henson]
1566 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1568 *) DTLS Handshake overhaul. There were longstanding issues with
1569 OpenSSL DTLS implementation, which were making it impossible for
1570 RFC 4347 compliant client to communicate with OpenSSL server.
1571 Unfortunately just fixing these incompatibilities would "cut off"
1572 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1573 server keeps tolerating non RFC compliant syntax. The opposite is
1574 not true, 0.9.8f client can not communicate with earlier server.
1575 This update even addresses CVE-2007-4995.
1578 *) Changes to avoid need for function casts in OpenSSL: some compilers
1579 (gcc 4.2 and later) reject their use.
1580 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1583 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1584 RFC4507bis. The encrypted ticket format is an encrypted encoded
1585 SSL_SESSION structure, that way new session features are automatically
1588 If a client application caches session in an SSL_SESSION structure
1589 support is transparent because tickets are now stored in the encoded
1592 The SSL_CTX structure automatically generates keys for ticket
1593 protection in servers so again support should be possible
1594 with no application modification.
1596 If a client or server wishes to disable RFC4507 support then the option
1597 SSL_OP_NO_TICKET can be set.
1599 Add a TLS extension debugging callback to allow the contents of any client
1600 or server extensions to be examined.
1602 This work was sponsored by Google.
1605 *) Add initial support for TLS extensions, specifically for the server_name
1606 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1607 have new members for a host name. The SSL data structure has an
1608 additional member SSL_CTX *initial_ctx so that new sessions can be
1609 stored in that context to allow for session resumption, even after the
1610 SSL has been switched to a new SSL_CTX in reaction to a client's
1611 server_name extension.
1613 New functions (subject to change):
1615 SSL_get_servername()
1616 SSL_get_servername_type()
1619 New CTRL codes and macros (subject to change):
1621 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1622 - SSL_CTX_set_tlsext_servername_callback()
1623 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1624 - SSL_CTX_set_tlsext_servername_arg()
1625 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1627 openssl s_client has a new '-servername ...' option.
1629 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1630 '-key2 ...', '-servername_fatal' (subject to change). This allows
1631 testing the HostName extension for a specific single host name ('-cert'
1632 and '-key' remain fallbacks for handshakes without HostName
1633 negotiation). If the unrecogninzed_name alert has to be sent, this by
1634 default is a warning; it becomes fatal with the '-servername_fatal'
1637 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1639 *) Add AES and SSE2 assembly language support to VC++ build.
1642 *) Mitigate attack on final subtraction in Montgomery reduction.
1645 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1646 (which previously caused an internal error).
1649 *) Squeeze another 10% out of IGE mode when in != out.
1652 *) AES IGE mode speedup.
1653 [Dean Gaudet (Google)]
1655 *) Add the Korean symmetric 128-bit cipher SEED (see
1656 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1657 add SEED ciphersuites from RFC 4162:
1659 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1660 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1661 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1662 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1664 To minimize changes between patchlevels in the OpenSSL 0.9.8
1665 series, SEED remains excluded from compilation unless OpenSSL
1666 is configured with 'enable-seed'.
1667 [KISA, Bodo Moeller]
1669 *) Mitigate branch prediction attacks, which can be practical if a
1670 single processor is shared, allowing a spy process to extract
1671 information. For detailed background information, see
1672 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1673 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1674 and Necessary Software Countermeasures"). The core of the change
1675 are new versions BN_div_no_branch() and
1676 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1677 respectively, which are slower, but avoid the security-relevant
1678 conditional branches. These are automatically called by BN_div()
1679 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1680 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1681 remove a conditional branch.
1683 BN_FLG_CONSTTIME is the new name for the previous
1684 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1685 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1686 in the exponent causes BN_mod_exp_mont() to use the alternative
1687 implementation in BN_mod_exp_mont_consttime().) The old name
1688 remains as a deprecated alias.
1690 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1691 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1692 constant-time implementations for more than just exponentiation.
1693 Here too the old name is kept as a deprecated alias.
1695 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1696 the BN_BLINDING structure gets an independent copy of the
1697 modulus. This means that the previous "BIGNUM *m" argument to
1698 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1699 essentially becomes "const BIGNUM *m", although we can't actually
1700 change this in the header file before 0.9.9. It allows
1701 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1702 enable BN_FLG_CONSTTIME.
1704 [Matthew D Wood (Intel Corp)]
1706 *) In the SSL/TLS server implementation, be strict about session ID
1707 context matching (which matters if an application uses a single
1708 external cache for different purposes). Previously,
1709 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1710 set. This did ensure strict client verification, but meant that,
1711 with applications using a single external cache for quite
1712 different requirements, clients could circumvent ciphersuite
1713 restrictions for a given session ID context by starting a session
1714 in a different context.
1717 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1718 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1719 authentication-only ciphersuites.
1722 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1723 not complete and could lead to a possible single byte overflow
1724 (CVE-2007-5135) [Ben Laurie]
1726 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1728 *) Since AES128 and AES256 (and similarly Camellia128 and
1729 Camellia256) share a single mask bit in the logic of
1730 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1731 kludge to work properly if AES128 is available and AES256 isn't
1732 (or if Camellia128 is available and Camellia256 isn't).
1735 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1736 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1737 When a point or a seed is encoded in a BIT STRING, we need to
1738 prevent the removal of trailing zero bits to get the proper DER
1739 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1740 of a NamedBitList, for which trailing 0 bits need to be removed.)
1743 *) Have SSL/TLS server implementation tolerate "mismatched" record
1744 protocol version while receiving ClientHello even if the
1745 ClientHello is fragmented. (The server can't insist on the
1746 particular protocol version it has chosen before the ServerHello
1747 message has informed the client about his choice.)
1750 *) Add RFC 3779 support.
1751 [Rob Austein for ARIN, Ben Laurie]
1753 *) Load error codes if they are not already present instead of using a
1754 static variable. This allows them to be cleanly unloaded and reloaded.
1755 Improve header file function name parsing.
1758 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1759 or CAPABILITY handshake as required by RFCs.
1762 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1764 *) Introduce limits to prevent malicious keys being able to
1765 cause a denial of service. (CVE-2006-2940)
1766 [Steve Henson, Bodo Moeller]
1768 *) Fix ASN.1 parsing of certain invalid structures that can result
1769 in a denial of service. (CVE-2006-2937) [Steve Henson]
1771 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1772 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1774 *) Fix SSL client code which could crash if connecting to a
1775 malicious SSLv2 server. (CVE-2006-4343)
1776 [Tavis Ormandy and Will Drewry, Google Security Team]
1778 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1779 match only those. Before that, "AES256-SHA" would be interpreted
1780 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1781 the same strength classification in 0.9.7h) as we currently only
1782 have a single AES bit in the ciphersuite description bitmap.
1783 That change, however, also applied to ciphersuite strings such as
1784 "RC4-MD5" that intentionally matched multiple ciphersuites --
1785 namely, SSL 2.0 ciphersuites in addition to the more common ones
1786 from SSL 3.0/TLS 1.0.
1788 So we change the selection algorithm again: Naming an explicit
1789 ciphersuite selects this one ciphersuite, and any other similar
1790 ciphersuite (same bitmap) from *other* protocol versions.
1791 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1792 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1794 Since SSL 2.0 does not have any ciphersuites for which the
1795 128/256 bit distinction would be relevant, this works for now.
1796 The proper fix will be to use different bits for AES128 and
1797 AES256, which would have avoided the problems from the beginning;
1798 however, bits are scarce, so we can only do this in a new release
1799 (not just a patchlevel) when we can change the SSL_CIPHER
1800 definition to split the single 'unsigned long mask' bitmap into
1801 multiple values to extend the available space.
1805 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1807 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1808 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1810 *) Add AES IGE and biIGE modes.
1813 *) Change the Unix randomness entropy gathering to use poll() when
1814 possible instead of select(), since the latter has some
1815 undesirable limitations.
1816 [Darryl Miles via Richard Levitte and Bodo Moeller]
1818 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
1819 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
1820 cannot be implicitly activated as part of, e.g., the "AES" alias.
1821 However, please upgrade to OpenSSL 0.9.9[-dev] for
1822 non-experimental use of the ECC ciphersuites to get TLS extension
1823 support, which is required for curve and point format negotiation
1824 to avoid potential handshake problems.
1827 *) Disable rogue ciphersuites:
1829 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1830 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1831 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1833 The latter two were purportedly from
1834 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1837 Also deactivate the remaining ciphersuites from
1838 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1839 unofficial, and the ID has long expired.
1842 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1843 dual-core machines) and other potential thread-safety issues.
1846 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
1847 versions), which is now available for royalty-free use
1848 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
1849 Also, add Camellia TLS ciphersuites from RFC 4132.
1851 To minimize changes between patchlevels in the OpenSSL 0.9.8
1852 series, Camellia remains excluded from compilation unless OpenSSL
1853 is configured with 'enable-camellia'.
1856 *) Disable the padding bug check when compression is in use. The padding
1857 bug check assumes the first packet is of even length, this is not
1858 necessarily true if compresssion is enabled and can result in false
1859 positives causing handshake failure. The actual bug test is ancient
1860 code so it is hoped that implementations will either have fixed it by
1861 now or any which still have the bug do not support compression.
1864 Changes between 0.9.8a and 0.9.8b [04 May 2006]
1866 *) When applying a cipher rule check to see if string match is an explicit
1867 cipher suite and only match that one cipher suite if it is.
1870 *) Link in manifests for VC++ if needed.
1871 [Austin Ziegler <halostatue@gmail.com>]
1873 *) Update support for ECC-based TLS ciphersuites according to
1874 draft-ietf-tls-ecc-12.txt with proposed changes (but without
1875 TLS extensions, which are supported starting with the 0.9.9
1876 branch, not in the OpenSSL 0.9.8 branch).
1879 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
1880 opaque EVP_CIPHER_CTX handling.
1883 *) Fixes and enhancements to zlib compression code. We now only use
1884 "zlib1.dll" and use the default __cdecl calling convention on Win32
1885 to conform with the standards mentioned here:
1886 http://www.zlib.net/DLL_FAQ.txt
1887 Static zlib linking now works on Windows and the new --with-zlib-include
1888 --with-zlib-lib options to Configure can be used to supply the location
1889 of the headers and library. Gracefully handle case where zlib library
1893 *) Several fixes and enhancements to the OID generation code. The old code
1894 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
1895 handle numbers larger than ULONG_MAX, truncated printing and had a
1896 non standard OBJ_obj2txt() behaviour.
1899 *) Add support for building of engines under engine/ as shared libraries
1900 under VC++ build system.
1903 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
1904 Hopefully, we will not see any false combination of paths any more.
1907 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
1909 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1910 (part of SSL_OP_ALL). This option used to disable the
1911 countermeasure against man-in-the-middle protocol-version
1912 rollback in the SSL 2.0 server implementation, which is a bad
1913 idea. (CVE-2005-2969)
1915 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1916 for Information Security, National Institute of Advanced Industrial
1917 Science and Technology [AIST], Japan)]
1919 *) Add two function to clear and return the verify parameter flags.
1922 *) Keep cipherlists sorted in the source instead of sorting them at
1923 runtime, thus removing the need for a lock.
1926 *) Avoid some small subgroup attacks in Diffie-Hellman.
1927 [Nick Mathewson and Ben Laurie]
1929 *) Add functions for well-known primes.
1932 *) Extended Windows CE support.
1933 [Satoshi Nakamura and Andy Polyakov]
1935 *) Initialize SSL_METHOD structures at compile time instead of during
1936 runtime, thus removing the need for a lock.
1939 *) Make PKCS7_decrypt() work even if no certificate is supplied by
1940 attempting to decrypt each encrypted key in turn. Add support to
1944 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
1946 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
1949 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
1952 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
1953 key into the same file any more.
1956 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
1959 *) Add -utf8 command line and config file option to 'ca'.
1960 [Stefan <stf@udoma.org]
1962 *) Removed the macro des_crypt(), as it seems to conflict with some
1963 libraries. Use DES_crypt().
1966 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
1967 involves renaming the source and generated shared-libs for
1968 both. The engines will accept the corrected or legacy ids
1969 ('ncipher' and '4758_cca' respectively) when binding. NB,
1970 this only applies when building 'shared'.
1971 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
1973 *) Add attribute functions to EVP_PKEY structure. Modify
1974 PKCS12_create() to recognize a CSP name attribute and
1975 use it. Make -CSP option work again in pkcs12 utility.
1978 *) Add new functionality to the bn blinding code:
1979 - automatic re-creation of the BN_BLINDING parameters after
1980 a fixed number of uses (currently 32)
1981 - add new function for parameter creation
1982 - introduce flags to control the update behaviour of the
1983 BN_BLINDING parameters
1984 - hide BN_BLINDING structure
1985 Add a second BN_BLINDING slot to the RSA structure to improve
1986 performance when a single RSA object is shared among several
1990 *) Add support for DTLS.
1991 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
1993 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
1994 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
1997 *) Remove buggy and incompletet DH cert support from
1998 ssl/ssl_rsa.c and ssl/s3_both.c
2001 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2002 the apps/openssl applications.
2005 *) Compile clean with "-Wall -Wmissing-prototypes
2006 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2007 DEBUG_SAFESTACK must also be set.
2010 *) Change ./Configure so that certain algorithms can be disabled by default.
2011 The new counterpiece to "no-xxx" is "enable-xxx".
2013 The patented RC5 and MDC2 algorithms will now be disabled unless
2014 "enable-rc5" and "enable-mdc2", respectively, are specified.
2016 (IDEA remains enabled despite being patented. This is because IDEA
2017 is frequently required for interoperability, and there is no license
2018 fee for non-commercial use. As before, "no-idea" can be used to
2019 avoid this algorithm.)
2023 *) Add processing of proxy certificates (see RFC 3820). This work was
2024 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2025 EGEE (Enabling Grids for E-science in Europe).
2028 *) RC4 performance overhaul on modern architectures/implementations, such
2029 as Intel P4, IA-64 and AMD64.
2032 *) New utility extract-section.pl. This can be used specify an alternative
2033 section number in a pod file instead of having to treat each file as
2034 a separate case in Makefile. This can be done by adding two lines to the
2037 =for comment openssl_section:XXX
2039 The blank line is mandatory.
2043 *) New arguments -certform, -keyform and -pass for s_client and s_server
2044 to allow alternative format key and certificate files and passphrase
2048 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2049 update associated structures and add various utility functions.
2051 Add new policy related verify parameters, include policy checking in
2052 standard verify code. Enhance 'smime' application with extra parameters
2053 to support policy checking and print out.
2056 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2057 Nehemiah processors. These extensions support AES encryption in hardware
2058 as well as RNG (though RNG support is currently disabled).
2059 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2061 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2064 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2065 [Andy Polyakov and a number of other people]
2067 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2068 implementation contributed by IBM.
2069 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2071 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2072 exponent rather than 'unsigned long'. There is a corresponding change to
2073 the new 'rsa_keygen' element of the RSA_METHOD structure.
2074 [Jelte Jansen, Geoff Thorpe]
2076 *) Functionality for creating the initial serial number file is now
2077 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2079 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2080 number file to 1, which is bound to cause problems. To avoid
2081 the problems while respecting compatibility between different 0.9.7
2082 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2083 CA.pl for serial number initialization. With the new release 0.9.8,
2084 we can fix the problem directly in the 'ca' utility.)
2087 *) Reduced header interdepencies by declaring more opaque objects in
2088 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2089 give fewer recursive includes, which could break lazy source code - so
2090 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2091 developers should define this symbol when building and using openssl to
2092 ensure they track the recommended behaviour, interfaces, [etc], but
2093 backwards-compatible behaviour prevails when this isn't defined.
2096 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2099 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2100 This will generate a random key of the appropriate length based on the
2101 cipher context. The EVP_CIPHER can provide its own random key generation
2102 routine to support keys of a specific form. This is used in the des and
2103 3des routines to generate a key of the correct parity. Update S/MIME
2104 code to use new functions and hence generate correct parity DES keys.
2105 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2106 valid (weak or incorrect parity).
2109 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2110 as looking them up. This is useful when the verified structure may contain
2111 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2112 present unless the new PKCS7_NO_CRL flag is asserted.
2115 *) Extend ASN1 oid configuration module. It now additionally accepts the
2118 shortName = some long name, 1.2.3.4
2121 *) Reimplemented the BN_CTX implementation. There is now no more static
2122 limitation on the number of variables it can handle nor the depth of the
2123 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2124 information can now expand as required, and rather than having a single
2125 static array of bignums, BN_CTX now uses a linked-list of such arrays
2126 allowing it to expand on demand whilst maintaining the usefulness of
2127 BN_CTX's "bundling".
2130 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2131 to allow all RSA operations to function using a single BN_CTX.
2134 *) Preliminary support for certificate policy evaluation and checking. This
2135 is initially intended to pass the tests outlined in "Conformance Testing
2136 of Relying Party Client Certificate Path Processing Logic" v1.07.
2139 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2140 remained unused and not that useful. A variety of other little bignum
2141 tweaks and fixes have also been made continuing on from the audit (see
2145 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2146 associated ASN1, EVP and SSL functions and old ASN1 macros.
2149 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2150 and this should never fail. So the return value from the use of
2151 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2152 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2155 *) BN_CTX_get() should return zero-valued bignums, providing the same
2156 initialised value as BN_new().
2157 [Geoff Thorpe, suggested by Ulf Möller]
2159 *) Support for inhibitAnyPolicy certificate extension.
2162 *) An audit of the BIGNUM code is underway, for which debugging code is
2163 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2164 is considered valid when processing BIGNUMs, and causes execution to
2165 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2166 further steps are taken to deliberately pollute unused data in BIGNUM
2167 structures to try and expose faulty code further on. For now, openssl will
2168 (in its default mode of operation) continue to tolerate the inconsistent
2169 forms that it has tolerated in the past, but authors and packagers should
2170 consider trying openssl and their own applications when compiled with
2171 these debugging symbols defined. It will help highlight potential bugs in
2172 their own code, and will improve the test coverage for OpenSSL itself. At
2173 some point, these tighter rules will become openssl's default to improve
2174 maintainability, though the assert()s and other overheads will remain only
2175 in debugging configurations. See bn.h for more details.
2176 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2178 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2179 that can only be obtained through BN_CTX_new() (which implicitly
2180 initialises it). The presence of this function only made it possible
2181 to overwrite an existing structure (and cause memory leaks).
2184 *) Because of the callback-based approach for implementing LHASH as a
2185 template type, lh_insert() adds opaque objects to hash-tables and
2186 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2187 to clean up those corresponding objects before destroying the hash table
2188 (and losing the object pointers). So some over-zealous constifications in
2189 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2190 objects as "const" and the lh_doall[_arg] callback wrappers are not
2191 prototyped to have "const" restrictions on the object pointers they are
2192 given (and so aren't required to cast them away any more).
2195 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2196 (speed) prefers to use its own implementation. The two implementations
2197 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2198 its object type properly exposed (MS_TM) instead of casting to/from "char
2199 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2200 aren't necessarily the greatest nomenclatures - but this is what was used
2201 internally to the implementation so I've used that for now.
2204 *) Ensure that deprecated functions do not get compiled when
2205 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2206 the self-tests were still using deprecated key-generation functions so
2207 these have been updated also.
2210 *) Reorganise PKCS#7 code to separate the digest location functionality
2211 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2212 New function PKCS7_set_digest() to set the digest type for PKCS#7
2213 digestedData type. Add additional code to correctly generate the
2214 digestedData type and add support for this type in PKCS7 initialization
2218 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2219 structure of type "other".
2222 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2223 sure the loop does correctly stop and breaking ("division by zero")
2224 modulus operations are not performed. The (pre-generated) prime
2225 table crypto/bn/bn_prime.h was already correct, but it could not be
2226 re-generated on some platforms because of the "division by zero"
2227 situation in the script.
2228 [Ralf S. Engelschall]
2230 *) Update support for ECC-based TLS ciphersuites according to
2231 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2232 SHA-1 now is only used for "small" curves (where the
2233 representation of a field element takes up to 24 bytes); for
2234 larger curves, the field element resulting from ECDH is directly
2235 used as premaster secret.
2236 [Douglas Stebila (Sun Microsystems Laboratories)]
2238 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2239 curve secp160r1 to the tests.
2240 [Douglas Stebila (Sun Microsystems Laboratories)]
2242 *) Add the possibility to load symbols globally with DSO.
2243 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2245 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2246 control of the error stack.
2249 *) Add support for STORE in ENGINE.
2252 *) Add the STORE type. The intention is to provide a common interface
2253 to certificate and key stores, be they simple file-based stores, or
2254 HSM-type store, or LDAP stores, or...
2255 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2258 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2259 pass a list of arguments to any function as well as provide a way
2260 for a function to pass data back to the caller.
2263 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2264 works like BUF_strdup() but can be used to duplicate a portion of
2265 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2269 *) Add the function sk_find_ex() which works like sk_find(), but will
2270 return an index to an element even if an exact match couldn't be
2271 found. The index is guaranteed to point at the element where the
2272 searched-for key would be inserted to preserve sorting order.
2275 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2276 takes an extra flags argument for optional functionality. Currently,
2277 the following flags are defined:
2279 OBJ_BSEARCH_VALUE_ON_NOMATCH
2280 This one gets OBJ_bsearch_ex() to return a pointer to the first
2281 element where the comparing function returns a negative or zero
2284 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2285 This one gets OBJ_bsearch_ex() to return a pointer to the first
2286 element where the comparing function returns zero. This is useful
2287 if there are more than one element where the comparing function
2291 *) Make it possible to create self-signed certificates with 'openssl ca'
2292 in such a way that the self-signed certificate becomes part of the
2293 CA database and uses the same mechanisms for serial number generation
2294 as all other certificate signing. The new flag '-selfsign' enables
2295 this functionality. Adapt CA.sh and CA.pl.in.
2298 *) Add functionality to check the public key of a certificate request
2299 against a given private. This is useful to check that a certificate
2300 request can be signed by that key (self-signing).
2303 *) Make it possible to have multiple active certificates with the same
2304 subject in the CA index file. This is done only if the keyword
2305 'unique_subject' is set to 'no' in the main CA section (default
2306 if 'CA_default') of the configuration file. The value is saved
2307 with the database itself in a separate index attribute file,
2308 named like the index file with '.attr' appended to the name.
2311 *) Generate muti valued AVAs using '+' notation in config files for
2315 *) Support for nameConstraints certificate extension.
2318 *) Support for policyConstraints certificate extension.
2321 *) Support for policyMappings certificate extension.
2324 *) Make sure the default DSA_METHOD implementation only uses its
2325 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2326 and change its own handlers to be NULL so as to remove unnecessary
2327 indirection. This lets alternative implementations fallback to the
2328 default implementation more easily.
2331 *) Support for directoryName in GeneralName related extensions
2335 *) Make it possible to link applications using Makefile.shared.
2336 Make that possible even when linking against static libraries!
2339 *) Support for single pass processing for S/MIME signing. This now
2340 means that S/MIME signing can be done from a pipe, in addition
2341 cleartext signing (multipart/signed type) is effectively streaming
2342 and the signed data does not need to be all held in memory.
2344 This is done with a new flag PKCS7_STREAM. When this flag is set
2345 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2346 is done after the data is output (and digests calculated) in
2347 SMIME_write_PKCS7().
2350 *) Add full support for -rpath/-R, both in shared libraries and
2351 applications, at least on the platforms where it's known how
2355 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2356 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2357 will now compute a table of multiples of the generator that
2358 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2359 faster (notably in the case of a single point multiplication,
2360 scalar * generator).
2361 [Nils Larsch, Bodo Moeller]
2363 *) IPv6 support for certificate extensions. The various extensions
2364 which use the IP:a.b.c.d can now take IPv6 addresses using the
2365 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2369 *) Added an ENGINE that implements RSA by performing private key
2370 exponentiations with the GMP library. The conversions to and from
2371 GMP's mpz_t format aren't optimised nor are any montgomery forms
2372 cached, and on x86 it appears OpenSSL's own performance has caught up.
2373 However there are likely to be other architectures where GMP could
2374 provide a boost. This ENGINE is not built in by default, but it can be
2375 specified at Configure time and should be accompanied by the necessary
2376 linker additions, eg;
2377 ./config -DOPENSSL_USE_GMP -lgmp
2380 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2381 testing availability of engines with "-t" - the old behaviour is
2382 produced by increasing the feature's verbosity with "-tt".
2385 *) ECDSA routines: under certain error conditions uninitialized BN objects
2386 could be freed. Solution: make sure initialization is performed early
2387 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2391 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2392 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2393 software implementations. For DSA and DH, parameter generation can
2394 also be overriden by providing the appropriate method callbacks.
2397 *) Change the "progress" mechanism used in key-generation and
2398 primality testing to functions that take a new BN_GENCB pointer in
2399 place of callback/argument pairs. The new API functions have "_ex"
2400 postfixes and the older functions are reimplemented as wrappers for
2401 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2402 declarations of the old functions to help (graceful) attempts to
2403 migrate to the new functions. Also, the new key-generation API
2404 functions operate on a caller-supplied key-structure and return
2405 success/failure rather than returning a key or NULL - this is to
2406 help make "keygen" another member function of RSA_METHOD etc.
2408 Example for using the new callback interface:
2410 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2414 BN_GENCB_set(&my_cb, my_callback, my_arg);
2416 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2417 /* For the meaning of a, b in calls to my_callback(), see the
2418 * documentation of the function that calls the callback.
2419 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2420 * my_callback should return 1 if it wants BN_is_prime_ex()
2421 * to continue, or 0 to stop.
2426 *) Change the ZLIB compression method to be stateful, and make it
2427 available to TLS with the number defined in
2428 draft-ietf-tls-compression-04.txt.
2431 *) Add the ASN.1 structures and functions for CertificatePair, which
2432 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2434 CertificatePair ::= SEQUENCE {
2435 forward [0] Certificate OPTIONAL,
2436 reverse [1] Certificate OPTIONAL,
2437 -- at least one of the pair shall be present -- }
2439 Also implement the PEM functions to read and write certificate
2440 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2442 This needed to be defined, mostly for the sake of the LDAP
2443 attribute crossCertificatePair, but may prove useful elsewhere as
2447 *) Make it possible to inhibit symlinking of shared libraries in
2448 Makefile.shared, for Cygwin's sake.
2451 *) Extend the BIGNUM API by creating a function
2452 void BN_set_negative(BIGNUM *a, int neg);
2453 and a macro that behave like
2454 int BN_is_negative(const BIGNUM *a);
2456 to avoid the need to access 'a->neg' directly in applications.
2459 *) Implement fast modular reduction for pseudo-Mersenne primes
2460 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2461 EC_GROUP_new_curve_GFp() will now automatically use this
2463 [Nils Larsch <nla@trustcenter.de>]
2465 *) Add new lock type (CRYPTO_LOCK_BN).
2468 *) Change the ENGINE framework to automatically load engines
2469 dynamically from specific directories unless they could be
2470 found to already be built in or loaded. Move all the
2471 current engines except for the cryptodev one to a new
2473 The engines in engines/ are built as shared libraries if
2474 the "shared" options was given to ./Configure or ./config.
2475 Otherwise, they are inserted in libcrypto.a.
2476 /usr/local/ssl/engines is the default directory for dynamic
2477 engines, but that can be overriden at configure time through
2478 the usual use of --prefix and/or --openssldir, and at run
2479 time with the environment variable OPENSSL_ENGINES.
2480 [Geoff Thorpe and Richard Levitte]
2482 *) Add Makefile.shared, a helper makefile to build shared
2483 libraries. Addapt Makefile.org.
2486 *) Add version info to Win32 DLLs.
2487 [Peter 'Luna' Runestig" <peter@runestig.com>]
2489 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2490 can be added using this API to created arbitrary PKCS#12
2491 files while avoiding the low level API.
2493 New options to PKCS12_create(), key or cert can be NULL and
2494 will then be omitted from the output file. The encryption
2495 algorithm NIDs can be set to -1 for no encryption, the mac
2496 iteration count can be set to 0 to omit the mac.
2498 Enhance pkcs12 utility by making the -nokeys and -nocerts
2499 options work when creating a PKCS#12 file. New option -nomac
2500 to omit the mac, NONE can be set for an encryption algorithm.
2501 New code is modified to use the enhanced PKCS12_create()
2502 instead of the low level API.
2505 *) Extend ASN1 encoder to support indefinite length constructed
2506 encoding. This can output sequences tags and octet strings in
2507 this form. Modify pk7_asn1.c to support indefinite length
2508 encoding. This is experimental and needs additional code to
2509 be useful, such as an ASN1 bio and some enhanced streaming
2512 Extend template encode functionality so that tagging is passed
2513 down to the template encoder.
2516 *) Let 'openssl req' fail if an argument to '-newkey' is not
2517 recognized instead of using RSA as a default.
2520 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2521 As these are not official, they are not included in "ALL";
2522 the "ECCdraft" ciphersuite group alias can be used to select them.
2523 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2525 *) Add ECDH engine support.
2526 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2528 *) Add ECDH in new directory crypto/ecdh/.
2529 [Douglas Stebila (Sun Microsystems Laboratories)]
2531 *) Let BN_rand_range() abort with an error after 100 iterations
2532 without success (which indicates a broken PRNG).
2535 *) Change BN_mod_sqrt() so that it verifies that the input value
2536 is really the square of the return value. (Previously,
2537 BN_mod_sqrt would show GIGO behaviour.)
2540 *) Add named elliptic curves over binary fields from X9.62, SECG,
2541 and WAP/WTLS; add OIDs that were still missing.
2543 [Sheueling Chang Shantz and Douglas Stebila
2544 (Sun Microsystems Laboratories)]
2546 *) Extend the EC library for elliptic curves over binary fields
2547 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2550 EC_GF2m_simple_method
2554 EC_GROUP_new_curve_GF2m
2555 EC_GROUP_set_curve_GF2m
2556 EC_GROUP_get_curve_GF2m
2557 EC_POINT_set_affine_coordinates_GF2m
2558 EC_POINT_get_affine_coordinates_GF2m
2559 EC_POINT_set_compressed_coordinates_GF2m
2561 Point compression for binary fields is disabled by default for
2562 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2565 As binary polynomials are represented as BIGNUMs, various members
2566 of the EC_GROUP and EC_POINT data structures can be shared
2567 between the implementations for prime fields and binary fields;
2568 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2569 are essentially identical to their ..._GFp counterparts.
2570 (For simplicity, the '..._GFp' prefix has been dropped from
2571 various internal method names.)
2573 An internal 'field_div' method (similar to 'field_mul' and
2574 'field_sqr') has been added; this is used only for binary fields.
2576 [Sheueling Chang Shantz and Douglas Stebila
2577 (Sun Microsystems Laboratories)]
2579 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2580 through methods ('mul', 'precompute_mult').
2582 The generic implementations (now internally called 'ec_wNAF_mul'
2583 and 'ec_wNAF_precomputed_mult') remain the default if these
2584 methods are undefined.
2586 [Sheueling Chang Shantz and Douglas Stebila
2587 (Sun Microsystems Laboratories)]
2589 *) New function EC_GROUP_get_degree, which is defined through
2590 EC_METHOD. For curves over prime fields, this returns the bit
2591 length of the modulus.
2593 [Sheueling Chang Shantz and Douglas Stebila
2594 (Sun Microsystems Laboratories)]
2596 *) New functions EC_GROUP_dup, EC_POINT_dup.
2597 (These simply call ..._new and ..._copy).
2599 [Sheueling Chang Shantz and Douglas Stebila
2600 (Sun Microsystems Laboratories)]
2602 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2603 Polynomials are represented as BIGNUMs (where the sign bit is not
2604 used) in the following functions [macros]:
2607 BN_GF2m_sub [= BN_GF2m_add]
2608 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2609 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2610 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2612 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2613 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2614 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2615 BN_GF2m_cmp [= BN_ucmp]
2617 (Note that only the 'mod' functions are actually for fields GF(2^m).
2618 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2620 For some functions, an the irreducible polynomial defining a
2621 field can be given as an 'unsigned int[]' with strictly
2622 decreasing elements giving the indices of those bits that are set;
2623 i.e., p[] represents the polynomial
2624 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2626 p[0] > p[1] > ... > p[k] = 0.
2627 This applies to the following functions:
2632 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2633 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2635 BN_GF2m_mod_sqrt_arr
2636 BN_GF2m_mod_solve_quad_arr
2640 Conversion can be performed by the following functions:
2645 bntest.c has additional tests for binary polynomial arithmetic.
2647 Two implementations for BN_GF2m_mod_div() are available.
2648 The default algorithm simply uses BN_GF2m_mod_inv() and
2649 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2650 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2651 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2653 [Sheueling Chang Shantz and Douglas Stebila
2654 (Sun Microsystems Laboratories)]
2656 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2657 functionality is disabled at compile-time.
2658 [Douglas Stebila <douglas.stebila@sun.com>]
2660 *) Change default behaviour of 'openssl asn1parse' so that more
2661 information is visible when viewing, e.g., a certificate:
2663 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2664 mode the content of non-printable OCTET STRINGs is output in a
2665 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2666 avoid the appearance of a printable string.
2667 [Nils Larsch <nla@trustcenter.de>]
2669 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2671 EC_GROUP_set_asn1_flag()
2672 EC_GROUP_get_asn1_flag()
2673 EC_GROUP_set_point_conversion_form()
2674 EC_GROUP_get_point_conversion_form()
2675 These control ASN1 encoding details:
2676 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2677 has been set to OPENSSL_EC_NAMED_CURVE.
2678 - Points are encoded in uncompressed form by default; options for
2679 asn1_for are as for point2oct, namely
2680 POINT_CONVERSION_COMPRESSED
2681 POINT_CONVERSION_UNCOMPRESSED
2682 POINT_CONVERSION_HYBRID
2684 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2687 EC_GROUP_get0_seed()
2688 EC_GROUP_get_seed_len()
2689 This is used only for ASN1 purposes (so far).
2690 [Nils Larsch <nla@trustcenter.de>]
2692 *) Add 'field_type' member to EC_METHOD, which holds the NID
2693 of the appropriate field type OID. The new function
2694 EC_METHOD_get_field_type() returns this value.
2695 [Nils Larsch <nla@trustcenter.de>]
2700 EC_POINT_point2hex()
2701 EC_POINT_hex2point()
2702 providing useful interfaces to EC_POINT_point2oct() and
2703 EC_POINT_oct2point().
2704 [Nils Larsch <nla@trustcenter.de>]
2706 *) Change internals of the EC library so that the functions
2707 EC_GROUP_set_generator()
2708 EC_GROUP_get_generator()
2709 EC_GROUP_get_order()
2710 EC_GROUP_get_cofactor()
2711 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2712 to methods, which would lead to unnecessary code duplication when
2713 adding different types of curves.
2714 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2716 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2717 arithmetic, and such that modified wNAFs are generated
2718 (which avoid length expansion in many cases).
2721 *) Add a function EC_GROUP_check_discriminant() (defined via
2722 EC_METHOD) that verifies that the curve discriminant is non-zero.
2724 Add a function EC_GROUP_check() that makes some sanity tests
2725 on a EC_GROUP, its generator and order. This includes
2726 EC_GROUP_check_discriminant().
2727 [Nils Larsch <nla@trustcenter.de>]
2729 *) Add ECDSA in new directory crypto/ecdsa/.
2731 Add applications 'openssl ecparam' and 'openssl ecdsa'
2732 (these are based on 'openssl dsaparam' and 'openssl dsa').
2734 ECDSA support is also included in various other files across the
2735 library. Most notably,
2736 - 'openssl req' now has a '-newkey ecdsa:file' option;
2737 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2738 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2739 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2740 them suitable for ECDSA where domain parameters must be
2741 extracted before the specific public key;
2742 - ECDSA engine support has been added.
2743 [Nils Larsch <nla@trustcenter.de>]
2745 *) Include some named elliptic curves, and add OIDs from X9.62,
2746 SECG, and WAP/WTLS. Each curve can be obtained from the new
2748 EC_GROUP_new_by_curve_name(),
2749 and the list of available named curves can be obtained with
2750 EC_get_builtin_curves().
2751 Also add a 'curve_name' member to EC_GROUP objects, which can be
2753 EC_GROUP_set_curve_name()
2754 EC_GROUP_get_curve_name()
2755 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2757 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2758 was actually never needed) and in BN_mul(). The removal in BN_mul()
2759 required a small change in bn_mul_part_recursive() and the addition
2760 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2761 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2762 bn_sub_words() and bn_add_words() except they take arrays with
2766 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2768 *) Cleanse PEM buffers before freeing them since they may contain
2770 [Benjamin Bennett <ben@psc.edu>]
2772 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2773 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2774 authentication-only ciphersuites.
2777 *) Since AES128 and AES256 share a single mask bit in the logic of
2778 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2779 kludge to work properly if AES128 is available and AES256 isn't.
2782 *) Expand security boundary to match 1.1.1 module.
2785 *) Remove redundant features: hash file source, editing of test vectors
2786 modify fipsld to use external fips_premain.c signature.
2789 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2790 run algorithm test programs.
2793 *) Make algorithm test programs more tolerant of whitespace.
2796 *) Have SSL/TLS server implementation tolerate "mismatched" record
2797 protocol version while receiving ClientHello even if the
2798 ClientHello is fragmented. (The server can't insist on the
2799 particular protocol version it has chosen before the ServerHello
2800 message has informed the client about his choice.)
2803 *) Load error codes if they are not already present instead of using a
2804 static variable. This allows them to be cleanly unloaded and reloaded.
2807 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2809 *) Introduce limits to prevent malicious keys being able to
2810 cause a denial of service. (CVE-2006-2940)
2811 [Steve Henson, Bodo Moeller]
2813 *) Fix ASN.1 parsing of certain invalid structures that can result
2814 in a denial of service. (CVE-2006-2937) [Steve Henson]
2816 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2817 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2819 *) Fix SSL client code which could crash if connecting to a
2820 malicious SSLv2 server. (CVE-2006-4343)
2821 [Tavis Ormandy and Will Drewry, Google Security Team]
2823 *) Change ciphersuite string processing so that an explicit
2824 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
2825 will no longer include "AES128-SHA"), and any other similar
2826 ciphersuite (same bitmap) from *other* protocol versions (so that
2827 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
2828 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
2829 changes from 0.9.8b and 0.9.8d.
2832 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
2834 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2835 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2837 *) Change the Unix randomness entropy gathering to use poll() when
2838 possible instead of select(), since the latter has some
2839 undesirable limitations.
2840 [Darryl Miles via Richard Levitte and Bodo Moeller]
2842 *) Disable rogue ciphersuites:
2844 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2845 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2846 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2848 The latter two were purportedly from
2849 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2852 Also deactive the remaining ciphersuites from
2853 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2854 unofficial, and the ID has long expired.
2857 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2858 dual-core machines) and other potential thread-safety issues.
2861 Changes between 0.9.7i and 0.9.7j [04 May 2006]
2863 *) Adapt fipsld and the build system to link against the validated FIPS
2864 module in FIPS mode.
2867 *) Fixes for VC++ 2005 build under Windows.
2870 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
2871 from a Windows bash shell such as MSYS. It is autodetected from the
2872 "config" script when run from a VC++ environment. Modify standard VC++
2873 build to use fipscanister.o from the GNU make build.
2876 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
2878 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
2879 The value now differs depending on if you build for FIPS or not.
2880 BEWARE! A program linked with a shared FIPSed libcrypto can't be
2881 safely run with a non-FIPSed libcrypto, as it may crash because of
2882 the difference induced by this change.
2885 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
2887 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2888 (part of SSL_OP_ALL). This option used to disable the
2889 countermeasure against man-in-the-middle protocol-version
2890 rollback in the SSL 2.0 server implementation, which is a bad
2891 idea. (CVE-2005-2969)
2893 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2894 for Information Security, National Institute of Advanced Industrial
2895 Science and Technology [AIST], Japan)]
2897 *) Minimal support for X9.31 signatures and PSS padding modes. This is
2898 mainly for FIPS compliance and not fully integrated at this stage.
2901 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
2902 the exponentiation using a fixed-length exponent. (Otherwise,
2903 the information leaked through timing could expose the secret key
2904 after many signatures; cf. Bleichenbacher's attack on DSA with
2908 *) Make a new fixed-window mod_exp implementation the default for
2909 RSA, DSA, and DH private-key operations so that the sequence of
2910 squares and multiplies and the memory access pattern are
2911 independent of the particular secret key. This will mitigate
2912 cache-timing and potential related attacks.
2914 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
2915 and this is automatically used by BN_mod_exp_mont() if the new flag
2916 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
2917 will use this BN flag for private exponents unless the flag
2918 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
2919 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
2921 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
2923 *) Change the client implementation for SSLv23_method() and
2924 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
2925 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
2926 (Previously, the SSL 2.0 backwards compatible Client Hello
2927 message format would be used even with SSL_OP_NO_SSLv2.)
2930 *) Add support for smime-type MIME parameter in S/MIME messages which some
2934 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
2935 a threadsafe manner. Modify rsa code to use new function and add calls
2936 to dsa and dh code (which had race conditions before).
2939 *) Include the fixed error library code in the C error file definitions
2940 instead of fixing them up at runtime. This keeps the error code
2941 structures constant.
2944 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
2946 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
2949 *) Fixes for newer kerberos headers. NB: the casts are needed because
2950 the 'length' field is signed on one version and unsigned on another
2951 with no (?) obvious way to tell the difference, without these VC++
2952 complains. Also the "definition" of FAR (blank) is no longer included
2953 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
2954 some needed definitions.
2957 *) Undo Cygwin change.
2960 *) Added support for proxy certificates according to RFC 3820.
2961 Because they may be a security thread to unaware applications,
2962 they must be explicitely allowed in run-time. See
2963 docs/HOWTO/proxy_certificates.txt for further information.
2966 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
2968 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
2969 server and client random values. Previously
2970 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
2971 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
2973 This change has negligible security impact because:
2975 1. Server and client random values still have 24 bytes of pseudo random
2978 2. Server and client random values are sent in the clear in the initial
2981 3. The master secret is derived using the premaster secret (48 bytes in
2982 size for static RSA ciphersuites) as well as client server and random
2985 The OpenSSL team would like to thank the UK NISCC for bringing this issue
2988 [Stephen Henson, reported by UK NISCC]
2990 *) Use Windows randomness collection on Cygwin.
2993 *) Fix hang in EGD/PRNGD query when communication socket is closed
2994 prematurely by EGD/PRNGD.
2995 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
2997 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3000 *) Back-port of selected performance improvements from development
3001 branch, as well as improved support for PowerPC platforms.
3004 *) Add lots of checks for memory allocation failure, error codes to indicate
3005 failure and freeing up memory if a failure occurs.
3006 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3008 *) Add new -passin argument to dgst.
3011 *) Perform some character comparisons of different types in X509_NAME_cmp:
3012 this is needed for some certificates that reencode DNs into UTF8Strings
3013 (in violation of RFC3280) and can't or wont issue name rollover
3017 *) Make an explicit check during certificate validation to see that
3018 the CA setting in each certificate on the chain is correct. As a
3019 side effect always do the following basic checks on extensions,
3020 not just when there's an associated purpose to the check:
3022 - if there is an unhandled critical extension (unless the user
3023 has chosen to ignore this fault)
3024 - if the path length has been exceeded (if one is set at all)
3025 - that certain extensions fit the associated purpose (if one has
3029 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3031 *) Avoid a race condition when CRLs are checked in a multi threaded
3032 environment. This would happen due to the reordering of the revoked
3033 entries during signature checking and serial number lookup. Now the
3034 encoding is cached and the serial number sort performed under a lock.
3035 Add new STACK function sk_is_sorted().
3038 *) Add Delta CRL to the extension code.
3041 *) Various fixes to s3_pkt.c so alerts are sent properly.
3042 [David Holmes <d.holmes@f5.com>]
3044 *) Reduce the chances of duplicate issuer name and serial numbers (in
3045 violation of RFC3280) using the OpenSSL certificate creation utilities.
3046 This is done by creating a random 64 bit value for the initial serial
3047 number when a serial number file is created or when a self signed
3048 certificate is created using 'openssl req -x509'. The initial serial
3049 number file is created using 'openssl x509 -next_serial' in CA.pl
3050 rather than being initialized to 1.
3053 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3055 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3056 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3057 [Joe Orton, Steve Henson]
3059 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3061 [Joe Orton, Steve Henson]
3063 *) Make it possible to have multiple active certificates with the same
3064 subject in the CA index file. This is done only if the keyword
3065 'unique_subject' is set to 'no' in the main CA section (default
3066 if 'CA_default') of the configuration file. The value is saved
3067 with the database itself in a separate index attribute file,
3068 named like the index file with '.attr' appended to the name.
3071 *) X509 verify fixes. Disable broken certificate workarounds when
3072 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3073 keyUsage extension present. Don't accept CRLs with unhandled critical
3074 extensions: since verify currently doesn't process CRL extensions this
3075 rejects a CRL with *any* critical extensions. Add new verify error codes
3079 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3080 A clarification of RFC2560 will require the use of OCTET STRINGs and
3081 some implementations cannot handle the current raw format. Since OpenSSL
3082 copies and compares OCSP nonces as opaque blobs without any attempt at
3083 parsing them this should not create any compatibility issues.
3086 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3087 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3088 this HMAC (and other) operations are several times slower than OpenSSL
3092 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3093 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3095 *) Use the correct content when signing type "other".
3098 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3100 *) Fix various bugs revealed by running the NISCC test suite:
3102 Stop out of bounds reads in the ASN1 code when presented with
3103 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3105 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3107 If verify callback ignores invalid public key errors don't try to check
3108 certificate signature with the NULL public key.
3112 *) New -ignore_err option in ocsp application to stop the server
3113 exiting on the first error in a request.
3116 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3117 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3121 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3122 extra data after the compression methods not only for TLS 1.0
3123 but also for SSL 3.0 (as required by the specification).
3124 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3126 *) Change X509_certificate_type() to mark the key as exported/exportable
3127 when it's 512 *bits* long, not 512 bytes.
3130 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3131 blocks during encryption.
3134 *) Various fixes to base64 BIO and non blocking I/O. On write
3135 flushes were not handled properly if the BIO retried. On read
3136 data was not being buffered properly and had various logic bugs.
3137 This also affects blocking I/O when the data being decoded is a
3141 *) Various S/MIME bugfixes and compatibility changes:
3142 output correct application/pkcs7 MIME type if
3143 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3144 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3145 of files as .eml work). Correctly handle very long lines in MIME
3149 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3151 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3152 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3153 a protocol version number mismatch like a decryption error
3154 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3157 *) Turn on RSA blinding by default in the default implementation
3158 to avoid a timing attack. Applications that don't want it can call
3159 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3160 They would be ill-advised to do so in most cases.
3161 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3163 *) Change RSA blinding code so that it works when the PRNG is not
3164 seeded (in this case, the secret RSA exponent is abused as
3165 an unpredictable seed -- if it is not unpredictable, there
3166 is no point in blinding anyway). Make RSA blinding thread-safe
3167 by remembering the creator's thread ID in rsa->blinding and
3168 having all other threads use local one-time blinding factors
3169 (this requires more computation than sharing rsa->blinding, but
3170 avoids excessive locking; and if an RSA object is not shared
3171 between threads, blinding will still be very fast).
3174 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3175 ENGINE as defaults for all supported algorithms irrespective of
3176 the 'flags' parameter. 'flags' is now honoured, so applications
3177 should make sure they are passing it correctly.
3180 *) Target "mingw" now allows native Windows code to be generated in
3181 the Cygwin environment as well as with the MinGW compiler.
3184 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3186 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3187 via timing by performing a MAC computation even if incorrrect
3188 block cipher padding has been found. This is a countermeasure
3189 against active attacks where the attacker has to distinguish
3190 between bad padding and a MAC verification error. (CVE-2003-0078)
3192 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3193 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3194 Martin Vuagnoux (EPFL, Ilion)]
3196 *) Make the no-err option work as intended. The intention with no-err
3197 is not to have the whole error stack handling routines removed from
3198 libcrypto, it's only intended to remove all the function name and
3199 reason texts, thereby removing some of the footprint that may not
3200 be interesting if those errors aren't displayed anyway.
3202 NOTE: it's still possible for any application or module to have it's
3203 own set of error texts inserted. The routines are there, just not
3204 used by default when no-err is given.
3207 *) Add support for FreeBSD on IA64.
3208 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3210 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3211 Kerberos function mit_des_cbc_cksum(). Before this change,
3212 the value returned by DES_cbc_cksum() was like the one from
3213 mit_des_cbc_cksum(), except the bytes were swapped.
3214 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3216 *) Allow an application to disable the automatic SSL chain building.
3217 Before this a rather primitive chain build was always performed in
3218 ssl3_output_cert_chain(): an application had no way to send the
3219 correct chain if the automatic operation produced an incorrect result.
3221 Now the chain builder is disabled if either:
3223 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3225 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3227 The reasoning behind this is that an application would not want the
3228 auto chain building to take place if extra chain certificates are
3229 present and it might also want a means of sending no additional
3230 certificates (for example the chain has two certificates and the
3234 *) Add the possibility to build without the ENGINE framework.
3235 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3237 *) Under Win32 gmtime() can return NULL: check return value in
3238 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3241 *) DSA routines: under certain error conditions uninitialized BN objects
3242 could be freed. Solution: make sure initialization is performed early
3243 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3244 Nils Larsch <nla@trustcenter.de> via PR#459)
3247 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3248 checked on reconnect on the client side, therefore session resumption
3249 could still fail with a "ssl session id is different" error. This
3250 behaviour is masked when SSL_OP_ALL is used due to
3251 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3252 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3253 followup to PR #377.
3256 *) IA-32 assembler support enhancements: unified ELF targets, support
3257 for SCO/Caldera platforms, fix for Cygwin shared build.
3260 *) Add support for FreeBSD on sparc64. As a consequence, support for
3261 FreeBSD on non-x86 processors is separate from x86 processors on
3262 the config script, much like the NetBSD support.
3263 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3265 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3267 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3270 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3271 code (06) was taken as the first octet of the session ID and the last
3272 octet was ignored consequently. As a result SSLv2 client side session
3273 caching could not have worked due to the session ID mismatch between
3275 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3279 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3280 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3284 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3285 seems that in spite of existing for more than a year, many application
3286 author have done nothing to provide the necessary callbacks, which
3287 means that this particular engine will not work properly anywhere.
3288 This is a very unfortunate situation which forces us, in the name
3289 of usability, to give the hw_ncipher.c a static lock, which is part
3291 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3292 appear in 0.9.8 or later. We EXPECT application authors to have
3293 dealt properly with this when 0.9.8 is released (unless we actually
3294 make such changes in the libcrypto locking code that changes will
3295 have to be made anyway).
3298 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3299 octets have been read, EOF or an error occurs. Without this change
3300 some truncated ASN1 structures will not produce an error.
3303 *) Disable Heimdal support, since it hasn't been fully implemented.
3304 Still give the possibility to force the use of Heimdal, but with
3305 warnings and a request that patches get sent to openssl-dev.
3308 *) Add the VC-CE target, introduce the WINCE sysname, and add
3309 INSTALL.WCE and appropriate conditionals to make it build.
3310 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3312 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3313 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3314 edit numbers of the version.
3315 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3317 *) Introduce safe string copy and catenation functions
3318 (BUF_strlcpy() and BUF_strlcat()).
3319 [Ben Laurie (CHATS) and Richard Levitte]
3321 *) Avoid using fixed-size buffers for one-line DNs.
3322 [Ben Laurie (CHATS)]
3324 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3325 resizing buffers containing secrets, and use where appropriate.
3326 [Ben Laurie (CHATS)]
3328 *) Avoid using fixed size buffers for configuration file location.
3329 [Ben Laurie (CHATS)]
3331 *) Avoid filename truncation for various CA files.
3332 [Ben Laurie (CHATS)]
3334 *) Use sizeof in preference to magic numbers.
3335 [Ben Laurie (CHATS)]
3337 *) Avoid filename truncation in cert requests.
3338 [Ben Laurie (CHATS)]
3340 *) Add assertions to check for (supposedly impossible) buffer
3342 [Ben Laurie (CHATS)]
3344 *) Don't cache truncated DNS entries in the local cache (this could
3345 potentially lead to a spoofing attack).
3346 [Ben Laurie (CHATS)]
3348 *) Fix various buffers to be large enough for hex/decimal
3349 representations in a platform independent manner.
3350 [Ben Laurie (CHATS)]
3352 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3353 resizing buffers containing secrets, and use where appropriate.
3354 [Ben Laurie (CHATS)]
3356 *) Add BIO_indent() to avoid much slightly worrying code to do
3358 [Ben Laurie (CHATS)]
3360 *) Convert sprintf()/BIO_puts() to BIO_printf().
3361 [Ben Laurie (CHATS)]
3363 *) buffer_gets() could terminate with the buffer only half
3365 [Ben Laurie (CHATS)]
3367 *) Add assertions to prevent user-supplied crypto functions from
3368 overflowing internal buffers by having large block sizes, etc.
3369 [Ben Laurie (CHATS)]
3371 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3373 [Ben Laurie (CHATS)]
3375 *) Eliminate unused copy of key in RC4.
3376 [Ben Laurie (CHATS)]
3378 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3379 [Ben Laurie (CHATS)]
3381 *) Fix off-by-one error in EGD path.
3382 [Ben Laurie (CHATS)]
3384 *) If RANDFILE path is too long, ignore instead of truncating.
3385 [Ben Laurie (CHATS)]
3387 *) Eliminate unused and incorrectly sized X.509 structure
3389 [Ben Laurie (CHATS)]
3391 *) Eliminate unused and dangerous function knumber().
3392 [Ben Laurie (CHATS)]
3394 *) Eliminate unused and dangerous structure, KSSL_ERR.
3395 [Ben Laurie (CHATS)]
3397 *) Protect against overlong session ID context length in an encoded
3398 session object. Since these are local, this does not appear to be
3400 [Ben Laurie (CHATS)]
3402 *) Change from security patch (see 0.9.6e below) that did not affect
3403 the 0.9.6 release series:
3405 Remote buffer overflow in SSL3 protocol - an attacker could
3406 supply an oversized master key in Kerberos-enabled versions.
3408 [Ben Laurie (CHATS)]
3410 *) Change the SSL kerb5 codes to match RFC 2712.
3413 *) Make -nameopt work fully for req and add -reqopt switch.
3414 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3416 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3417 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3419 *) Make sure tests can be performed even if the corresponding algorithms
3420 have been removed entirely. This was also the last step to make
3421 OpenSSL compilable with DJGPP under all reasonable conditions.
3422 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3424 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3425 to allow version independent disabling of normally unselected ciphers,
3426 which may be activated as a side-effect of selecting a single cipher.
3428 (E.g., cipher list string "RSA" enables ciphersuites that are left
3429 out of "ALL" because they do not provide symmetric encryption.
3430 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3431 [Lutz Jaenicke, Bodo Moeller]
3433 *) Add appropriate support for separate platform-dependent build
3434 directories. The recommended way to make a platform-dependent
3435 build directory is the following (tested on Linux), maybe with
3438 # Place yourself outside of the OpenSSL source tree. In
3439 # this example, the environment variable OPENSSL_SOURCE
3440 # is assumed to contain the absolute OpenSSL source directory.
3441 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3442 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3443 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3444 mkdir -p `dirname $F`
3445 ln -s $OPENSSL_SOURCE/$F $F
3448 To be absolutely sure not to disturb the source tree, a "make clean"
3449 is a good thing. If it isn't successfull, don't worry about it,
3450 it probably means the source directory is very clean.
3453 *) Make sure any ENGINE control commands make local copies of string
3454 pointers passed to them whenever necessary. Otherwise it is possible
3455 the caller may have overwritten (or deallocated) the original string
3456 data when a later ENGINE operation tries to use the stored values.
3457 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3459 *) Improve diagnostics in file reading and command-line digests.
3460 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3462 *) Add AES modes CFB and OFB to the object database. Correct an
3463 error in AES-CFB decryption.
3466 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3467 allows existing EVP_CIPHER_CTX structures to be reused after
3468 calling EVP_*Final(). This behaviour is used by encryption
3469 BIOs and some applications. This has the side effect that
3470 applications must explicitly clean up cipher contexts with
3471 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3474 *) Check the values of dna and dnb in bn_mul_recursive before calling
3475 bn_mul_comba (a non zero value means the a or b arrays do not contain
3476 n2 elements) and fallback to bn_mul_normal if either is not zero.
3479 *) Fix escaping of non-ASCII characters when using the -subj option
3480 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3483 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3484 form for "surname", serialNumber has no short form.
3485 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3486 therefore remove "mail" short name for "internet 7".
3487 The OID for unique identifiers in X509 certificates is
3488 x500UniqueIdentifier, not uniqueIdentifier.
3489 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3492 *) Add an "init" command to the ENGINE config module and auto initialize
3493 ENGINEs. Without any "init" command the ENGINE will be initialized
3494 after all ctrl commands have been executed on it. If init=1 the
3495 ENGINE is initailized at that point (ctrls before that point are run
3496 on the uninitialized ENGINE and after on the initialized one). If
3497 init=0 then the ENGINE will not be iniatialized at all.
3500 *) Fix the 'app_verify_callback' interface so that the user-defined
3501 argument is actually passed to the callback: In the
3502 SSL_CTX_set_cert_verify_callback() prototype, the callback
3503 declaration has been changed from
3506 int (*cb)(X509_STORE_CTX *,void *);
3507 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3508 i=s->ctx->app_verify_callback(&ctx)
3509 has been changed into
3510 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3512 To update applications using SSL_CTX_set_cert_verify_callback(),
3513 a dummy argument can be added to their callback functions.
3514 [D. K. Smetters <smetters@parc.xerox.com>]
3516 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3517 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3519 *) Add and OPENSSL_LOAD_CONF define which will cause
3520 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3521 This allows older applications to transparently support certain
3522 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3523 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3524 load the config file and OPENSSL_add_all_algorithms_conf() which will
3525 always load it have also been added.
3528 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
3529 Adjust NIDs and EVP layer.
3530 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3532 *) Config modules support in openssl utility.
3534 Most commands now load modules from the config file,
3535 though in a few (such as version) this isn't done
3536 because it couldn't be used for anything.
3538 In the case of ca and req the config file used is
3539 the same as the utility itself: that is the -config
3540 command line option can be used to specify an
3544 *) Move default behaviour from OPENSSL_config(). If appname is NULL
3545 use "openssl_conf" if filename is NULL use default openssl config file.
3548 *) Add an argument to OPENSSL_config() to allow the use of an alternative
3549 config section name. Add a new flag to tolerate a missing config file
3550 and move code to CONF_modules_load_file().
3553 *) Support for crypto accelerator cards from Accelerated Encryption
3554 Processing, www.aep.ie. (Use engine 'aep')
3555 The support was copied from 0.9.6c [engine] and adapted/corrected
3556 to work with the new engine framework.
3557 [AEP Inc. and Richard Levitte]
3559 *) Support for SureWare crypto accelerator cards from Baltimore
3560 Technologies. (Use engine 'sureware')
3561 The support was copied from 0.9.6c [engine] and adapted
3562 to work with the new engine framework.
3565 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
3566 make the newer ENGINE framework commands for the CHIL engine work.
3567 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
3569 *) Make it possible to produce shared libraries on ReliantUNIX.
3570 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
3572 *) Add the configuration target debug-linux-ppro.
3573 Make 'openssl rsa' use the general key loading routines
3574 implemented in apps.c, and make those routines able to
3575 handle the key format FORMAT_NETSCAPE and the variant
3577 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3579 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3580 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3582 *) Add -keyform to rsautl, and document -engine.
3583 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3585 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3586 BIO_R_NO_SUCH_FILE error code rather than the generic
3587 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3590 *) Add new functions
3592 ERR_peek_last_error_line
3593 ERR_peek_last_error_line_data.
3594 These are similar to
3597 ERR_peek_error_line_data,
3598 but report on the latest error recorded rather than the first one
3599 still in the error queue.
3600 [Ben Laurie, Bodo Moeller]
3602 *) default_algorithms option in ENGINE config module. This allows things
3604 default_algorithms = ALL
3605 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3608 *) Prelminary ENGINE config module.
3611 *) New experimental application configuration code.
3614 *) Change the AES code to follow the same name structure as all other
3615 symmetric ciphers, and behave the same way. Move everything to
3616 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3617 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3619 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3620 [Ben Laurie and Theo de Raadt]
3622 *) Add option to output public keys in req command.
3623 [Massimiliano Pala madwolf@openca.org]
3625 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3626 (up to about 10% better than before for P-192 and P-224).
3629 *) New functions/macros
3631 SSL_CTX_set_msg_callback(ctx, cb)
3632 SSL_CTX_set_msg_callback_arg(ctx, arg)
3633 SSL_set_msg_callback(ssl, cb)
3634 SSL_set_msg_callback_arg(ssl, arg)
3636 to request calling a callback function
3638 void cb(int write_p, int version, int content_type,
3639 const void *buf, size_t len, SSL *ssl, void *arg)
3641 whenever a protocol message has been completely received
3642 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3643 protocol version according to which the SSL library interprets
3644 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3645 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3646 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3647 specification (change_cipher_spec(20), alert(21), handshake(22)).
3648 'buf' and 'len' point to the actual message, 'ssl' to the
3649 SSL object, and 'arg' is the application-defined value set by
3650 SSL[_CTX]_set_msg_callback_arg().
3652 'openssl s_client' and 'openssl s_server' have new '-msg' options
3653 to enable a callback that displays all protocol messages.
3656 *) Change the shared library support so shared libraries are built as
3657 soon as the corresponding static library is finished, and thereby get
3658 openssl and the test programs linked against the shared library.
3659 This still only happens when the keyword "shard" has been given to
3660 the configuration scripts.
3662 NOTE: shared library support is still an experimental thing, and
3663 backward binary compatibility is still not guaranteed.
3664 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3666 *) Add support for Subject Information Access extension.
3667 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3669 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3670 additional bytes when new memory had to be allocated, not just
3671 when reusing an existing buffer.
3674 *) New command line and configuration option 'utf8' for the req command.
3675 This allows field values to be specified as UTF8 strings.
3678 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3679 runs for the former and machine-readable output for the latter.
3682 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3683 of the e-mail address in the DN (i.e., it will go into a certificate
3684 extension only). The new configuration file option 'email_in_dn = no'
3685 has the same effect.
3686 [Massimiliano Pala madwolf@openca.org]
3688 *) Change all functions with names starting with des_ to be starting
3689 with DES_ instead. Add wrappers that are compatible with libdes,
3690 but are named _ossl_old_des_*. Finally, add macros that map the
3691 des_* symbols to the corresponding _ossl_old_des_* if libdes
3692 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3693 desired, the des_* symbols will be mapped to DES_*, with one
3696 Since we provide two compatibility mappings, the user needs to
3697 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3698 compatibility is desired. The default (i.e., when that macro
3699 isn't defined) is OpenSSL 0.9.6c compatibility.
3701 There are also macros that enable and disable the support of old
3702 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3703 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3704 are defined, the default will apply: to support the old des routines.
3706 In either case, one must include openssl/des.h to get the correct
3707 definitions. Do not try to just include openssl/des_old.h, that
3710 NOTE: This is a major break of an old API into a new one. Software
3711 authors are encouraged to switch to the DES_ style functions. Some
3712 time in the future, des_old.h and the libdes compatibility functions
3713 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
3714 default), and then completely removed.
3717 *) Test for certificates which contain unsupported critical extensions.
3718 If such a certificate is found during a verify operation it is
3719 rejected by default: this behaviour can be overridden by either
3720 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
3721 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
3722 X509_supported_extension() has also been added which returns 1 if a
3723 particular extension is supported.
3726 *) Modify the behaviour of EVP cipher functions in similar way to digests
3727 to retain compatibility with existing code.
3730 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
3731 compatibility with existing code. In particular the 'ctx' parameter does
3732 not have to be to be initialized before the call to EVP_DigestInit() and
3733 it is tidied up after a call to EVP_DigestFinal(). New function
3734 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
3735 EVP_MD_CTX_copy() changed to not require the destination to be
3736 initialized valid and new function EVP_MD_CTX_copy_ex() added which
3737 requires the destination to be valid.
3739 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
3740 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
3743 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
3744 so that complete 'Handshake' protocol structures are kept in memory
3745 instead of overwriting 'msg_type' and 'length' with 'body' data.
3748 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
3749 [Massimo Santin via Richard Levitte]
3751 *) Major restructuring to the underlying ENGINE code. This includes
3752 reduction of linker bloat, separation of pure "ENGINE" manipulation
3753 (initialisation, etc) from functionality dealing with implementations
3754 of specific crypto iterfaces. This change also introduces integrated
3755 support for symmetric ciphers and digest implementations - so ENGINEs
3756 can now accelerate these by providing EVP_CIPHER and EVP_MD
3757 implementations of their own. This is detailed in crypto/engine/README
3758 as it couldn't be adequately described here. However, there are a few
3759 API changes worth noting - some RSA, DSA, DH, and RAND functions that
3760 were changed in the original introduction of ENGINE code have now
3761 reverted back - the hooking from this code to ENGINE is now a good
3762 deal more passive and at run-time, operations deal directly with
3763 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
3764 dereferencing through an ENGINE pointer any more. Also, the ENGINE
3765 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
3766 they were not being used by the framework as there is no concept of a
3767 BIGNUM_METHOD and they could not be generalised to the new
3768 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
3769 ENGINE_cpy() has been removed as it cannot be consistently defined in
3773 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
3776 *) Change mkdef.pl to sort symbols that get the same entry number,
3777 and make sure the automatically generated functions ERR_load_*
3778 become part of libeay.num as well.
3781 *) New function SSL_renegotiate_pending(). This returns true once
3782 renegotiation has been requested (either SSL_renegotiate() call
3783 or HelloRequest/ClientHello receveived from the peer) and becomes
3784 false once a handshake has been completed.
3785 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
3786 sends a HelloRequest, but does not ensure that a handshake takes
3787 place. SSL_renegotiate_pending() is useful for checking if the
3788 client has followed the request.)
3791 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
3792 By default, clients may request session resumption even during
3793 renegotiation (if session ID contexts permit); with this option,
3794 session resumption is possible only in the first handshake.
3796 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
3797 more bits available for options that should not be part of
3798 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
3801 *) Add some demos for certificate and certificate request creation.
3804 *) Make maximum certificate chain size accepted from the peer application
3805 settable (SSL*_get/set_max_cert_list()), as proposed by
3806 "Douglas E. Engert" <deengert@anl.gov>.
3809 *) Add support for shared libraries for Unixware-7
3810 (Boyd Lynn Gerber <gerberb@zenez.com>).
3813 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
3814 be done prior to destruction. Use this to unload error strings from
3815 ENGINEs that load their own error strings. NB: This adds two new API
3816 functions to "get" and "set" this destroy handler in an ENGINE.
3819 *) Alter all existing ENGINE implementations (except "openssl" and
3820 "openbsd") to dynamically instantiate their own error strings. This
3821 makes them more flexible to be built both as statically-linked ENGINEs
3822 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
3823 Also, add stub code to each that makes building them as self-contained
3824 shared-libraries easier (see README.ENGINE).
3827 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
3828 implementations into applications that are completely implemented in
3829 self-contained shared-libraries. The "dynamic" ENGINE exposes control
3830 commands that can be used to configure what shared-library to load and
3831 to control aspects of the way it is handled. Also, made an update to
3832 the README.ENGINE file that brings its information up-to-date and
3833 provides some information and instructions on the "dynamic" ENGINE
3834 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
3837 *) Make it possible to unload ranges of ERR strings with a new
3838 "ERR_unload_strings" function.
3841 *) Add a copy() function to EVP_MD.
3844 *) Make EVP_MD routines take a context pointer instead of just the
3845 md_data void pointer.
3848 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
3849 that the digest can only process a single chunk of data
3850 (typically because it is provided by a piece of
3851 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
3852 is only going to provide a single chunk of data, and hence the
3853 framework needn't accumulate the data for oneshot drivers.
3856 *) As with "ERR", make it possible to replace the underlying "ex_data"
3857 functions. This change also alters the storage and management of global
3858 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
3859 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
3860 index counters. The API functions that use this state have been changed
3861 to take a "class_index" rather than pointers to the class's local STACK
3862 and counter, and there is now an API function to dynamically create new
3863 classes. This centralisation allows us to (a) plug a lot of the
3864 thread-safety problems that existed, and (b) makes it possible to clean
3865 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
3866 such data would previously have always leaked in application code and
3867 workarounds were in place to make the memory debugging turn a blind eye
3868 to it. Application code that doesn't use this new function will still
3869 leak as before, but their memory debugging output will announce it now
3870 rather than letting it slide.
3872 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
3873 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
3874 has a return value to indicate success or failure.
3877 *) Make it possible to replace the underlying "ERR" functions such that the
3878 global state (2 LHASH tables and 2 locks) is only used by the "default"
3879 implementation. This change also adds two functions to "get" and "set"
3880 the implementation prior to it being automatically set the first time
3881 any other ERR function takes place. Ie. an application can call "get",
3882 pass the return value to a module it has just loaded, and that module
3883 can call its own "set" function using that value. This means the
3884 module's "ERR" operations will use (and modify) the error state in the
3885 application and not in its own statically linked copy of OpenSSL code.
3888 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
3889 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
3890 the operation, and provides a more encapsulated way for external code
3891 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
3892 to use these functions rather than manually incrementing the counts.
3894 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
3897 *) Add EVP test program.
3900 *) Add symmetric cipher support to ENGINE. Expect the API to change!
3903 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
3904 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
3905 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
3906 These allow a CRL to be built without having to access X509_CRL fields
3907 directly. Modify 'ca' application to use new functions.
3910 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
3911 bug workarounds. Rollback attack detection is a security feature.
3912 The problem will only arise on OpenSSL servers when TLSv1 is not
3913 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
3914 Software authors not wanting to support TLSv1 will have special reasons
3915 for their choice and can explicitly enable this option.
3916 [Bodo Moeller, Lutz Jaenicke]
3918 *) Rationalise EVP so it can be extended: don't include a union of
3919 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
3920 (similar to those existing for EVP_CIPHER_CTX).
3925 EVP_MD_CTX_init(&md); /* new function call */
3926 EVP_DigestInit(&md, EVP_sha1());
3927 EVP_DigestUpdate(&md, in, len);
3928 EVP_DigestFinal(&md, out, NULL);
3929 EVP_MD_CTX_cleanup(&md); /* new function call */
3933 *) Make DES key schedule conform to the usual scheme, as well as
3934 correcting its structure. This means that calls to DES functions
3935 now have to pass a pointer to a des_key_schedule instead of a
3936 plain des_key_schedule (which was actually always a pointer
3939 des_key_schedule ks;
3941 des_set_key_checked(..., &ks);
3942 des_ncbc_encrypt(..., &ks, ...);
3944 (Note that a later change renames 'des_...' into 'DES_...'.)
3947 *) Initial reduction of linker bloat: the use of some functions, such as
3948 PEM causes large amounts of unused functions to be linked in due to
3949 poor organisation. For example pem_all.c contains every PEM function
3950 which has a knock on effect of linking in large amounts of (unused)
3951 ASN1 code. Grouping together similar functions and splitting unrelated
3952 functions prevents this.
3955 *) Cleanup of EVP macros.
3958 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
3959 correct _ecb suffix.
3962 *) Add initial OCSP responder support to ocsp application. The
3963 revocation information is handled using the text based index
3964 use by the ca application. The responder can either handle
3965 requests generated internally, supplied in files (for example
3966 via a CGI script) or using an internal minimal server.
3969 *) Add configuration choices to get zlib compression for TLS.
3972 *) Changes to Kerberos SSL for RFC 2712 compliance:
3973 1. Implemented real KerberosWrapper, instead of just using
3974 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
3975 2. Implemented optional authenticator field of KerberosWrapper.
3977 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
3978 and authenticator structs; see crypto/krb5/.
3980 Generalized Kerberos calls to support multiple Kerberos libraries.
3981 [Vern Staats <staatsvr@asc.hpc.mil>,
3982 Jeffrey Altman <jaltman@columbia.edu>
3983 via Richard Levitte]
3985 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
3986 already does with RSA. testdsa.h now has 'priv_key/pub_key'
3987 values for each of the key sizes rather than having just
3988 parameters (and 'speed' generating keys each time).
3991 *) Speed up EVP routines.
3994 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
3995 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
3996 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
3997 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
3999 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
4000 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
4001 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
4004 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
4006 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
4009 *) Added the OS2-EMX target.
4010 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
4012 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
4013 to support NCONF routines in extension code. New function CONF_set_nconf()
4014 to allow functions which take an NCONF to also handle the old LHASH
4015 structure: this means that the old CONF compatible routines can be
4016 retained (in particular wrt extensions) without having to duplicate the
4017 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
4020 *) Enhance the general user interface with mechanisms for inner control
4021 and with possibilities to have yes/no kind of prompts.
4024 *) Change all calls to low level digest routines in the library and
4025 applications to use EVP. Add missing calls to HMAC_cleanup() and
4026 don't assume HMAC_CTX can be copied using memcpy().
4027 [Verdon Walker <VWalker@novell.com>, Steve Henson]
4029 *) Add the possibility to control engines through control names but with
4030 arbitrary arguments instead of just a string.
4031 Change the key loaders to take a UI_METHOD instead of a callback
4032 function pointer. NOTE: this breaks binary compatibility with earlier
4033 versions of OpenSSL [engine].
4034 Adapt the nCipher code for these new conditions and add a card insertion
4038 *) Enhance the general user interface with mechanisms to better support
4039 dialog box interfaces, application-defined prompts, the possibility
4040 to use defaults (for example default passwords from somewhere else)
4041 and interrupts/cancellations.
4044 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
4045 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
4048 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
4049 tidy up some unnecessarily weird code in 'sk_new()').
4050 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
4052 *) Change the key loading routines for ENGINEs to use the same kind
4053 callback (pem_password_cb) as all other routines that need this
4057 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
4058 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
4059 than this minimum value is recommended.
4062 *) New random seeder for OpenVMS, using the system process statistics
4063 that are easily reachable.
4066 *) Windows apparently can't transparently handle global
4067 variables defined in DLLs. Initialisations such as:
4069 const ASN1_ITEM *it = &ASN1_INTEGER_it;
4071 wont compile. This is used by the any applications that need to
4072 declare their own ASN1 modules. This was fixed by adding the option
4073 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
4074 needed for static libraries under Win32.
4077 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
4078 setting of purpose and trust fields. New X509_STORE trust and
4079 purpose functions and tidy up setting in other SSL functions.
4082 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
4083 structure. These are inherited by X509_STORE_CTX when it is
4084 initialised. This allows various defaults to be set in the
4085 X509_STORE structure (such as flags for CRL checking and custom
4086 purpose or trust settings) for functions which only use X509_STORE_CTX
4087 internally such as S/MIME.
4089 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
4090 trust settings if they are not set in X509_STORE. This allows X509_STORE
4091 purposes and trust (in S/MIME for example) to override any set by default.
4093 Add command line options for CRL checking to smime, s_client and s_server
4097 *) Initial CRL based revocation checking. If the CRL checking flag(s)
4098 are set then the CRL is looked up in the X509_STORE structure and
4099 its validity and signature checked, then if the certificate is found
4100 in the CRL the verify fails with a revoked error.
4102 Various new CRL related callbacks added to X509_STORE_CTX structure.
4104 Command line options added to 'verify' application to support this.
4106 This needs some additional work, such as being able to handle multiple
4107 CRLs with different times, extension based lookup (rather than just
4108 by subject name) and ultimately more complete V2 CRL extension
4112 *) Add a general user interface API (crypto/ui/). This is designed
4113 to replace things like des_read_password and friends (backward
4114 compatibility functions using this new API are provided).
4115 The purpose is to remove prompting functions from the DES code
4116 section as well as provide for prompting through dialog boxes in
4117 a window system and the like.
4120 *) Add "ex_data" support to ENGINE so implementations can add state at a
4121 per-structure level rather than having to store it globally.
4124 *) Make it possible for ENGINE structures to be copied when retrieved by
4125 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
4126 This causes the "original" ENGINE structure to act like a template,
4127 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
4128 operational state can be localised to each ENGINE structure, despite the
4129 fact they all share the same "methods". New ENGINE structures returned in
4130 this case have no functional references and the return value is the single
4131 structural reference. This matches the single structural reference returned
4132 by ENGINE_by_id() normally, when it is incremented on the pre-existing
4136 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
4137 needs to match any other type at all we need to manually clear the
4141 *) Changes to the "openssl engine" utility to include;
4142 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
4143 about an ENGINE's available control commands.
4144 - executing control commands from command line arguments using the
4145 '-pre' and '-post' switches. '-post' is only used if '-t' is
4146 specified and the ENGINE is successfully initialised. The syntax for
4147 the individual commands are colon-separated, for example;
4148 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
4151 *) New dynamic control command support for ENGINEs. ENGINEs can now
4152 declare their own commands (numbers), names (strings), descriptions,
4153 and input types for run-time discovery by calling applications. A
4154 subset of these commands are implicitly classed as "executable"
4155 depending on their input type, and only these can be invoked through
4156 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
4157 can be based on user input, config files, etc). The distinction is
4158 that "executable" commands cannot return anything other than a boolean
4159 result and can only support numeric or string input, whereas some
4160 discoverable commands may only be for direct use through
4161 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
4162 pointers, or other custom uses. The "executable" commands are to
4163 support parameterisations of ENGINE behaviour that can be
4164 unambiguously defined by ENGINEs and used consistently across any
4165 OpenSSL-based application. Commands have been added to all the
4166 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
4167 control over shared-library paths without source code alterations.
4170 *) Changed all ENGINE implementations to dynamically allocate their
4171 ENGINEs rather than declaring them statically. Apart from this being
4172 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
4173 this also allows the implementations to compile without using the
4174 internal engine_int.h header.
4177 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
4178 'const' value. Any code that should be able to modify a RAND_METHOD
4179 should already have non-const pointers to it (ie. they should only
4180 modify their own ones).
4183 *) Made a variety of little tweaks to the ENGINE code.
4184 - "atalla" and "ubsec" string definitions were moved from header files
4185 to C code. "nuron" string definitions were placed in variables
4186 rather than hard-coded - allowing parameterisation of these values
4187 later on via ctrl() commands.
4188 - Removed unused "#if 0"'d code.
4189 - Fixed engine list iteration code so it uses ENGINE_free() to release
4190 structural references.
4191 - Constified the RAND_METHOD element of ENGINE structures.
4192 - Constified various get/set functions as appropriate and added
4193 missing functions (including a catch-all ENGINE_cpy that duplicates
4194 all ENGINE values onto a new ENGINE except reference counts/state).
4195 - Removed NULL parameter checks in get/set functions. Setting a method
4196 or function to NULL is a way of cancelling out a previously set
4197 value. Passing a NULL ENGINE parameter is just plain stupid anyway
4198 and doesn't justify the extra error symbols and code.
4199 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
4200 flags from engine_int.h to engine.h.
4201 - Changed prototypes for ENGINE handler functions (init(), finish(),
4202 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
4205 *) Implement binary inversion algorithm for BN_mod_inverse in addition
4206 to the algorithm using long division. The binary algorithm can be
4207 used only if the modulus is odd. On 32-bit systems, it is faster
4208 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
4209 roughly 5-15% for 256-bit moduli), so we use it only for moduli
4210 up to 450 bits. In 64-bit environments, the binary algorithm
4211 appears to be advantageous for much longer moduli; here we use it
4212 for moduli up to 2048 bits.
4215 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
4216 could not support the combine flag in choice fields.
4219 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
4220 extensions from a certificate request to the certificate.
4223 *) Allow multiple 'certopt' and 'nameopt' options to be separated
4224 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
4225 file: this allows the display of the certificate about to be
4226 signed to be customised, to allow certain fields to be included
4227 or excluded and extension details. The old system didn't display
4228 multicharacter strings properly, omitted fields not in the policy
4229 and couldn't display additional details such as extensions.
4232 *) Function EC_POINTs_mul for multiple scalar multiplication
4233 of an arbitrary number of elliptic curve points
projects / openssl.git / blob