5 Changes between 1.0.0 and 1.1.0 [xx XXX xxxx]
7 *) New function OPENSSL_gmtime_diff to find the difference in days
8 and seconds between two tm structures. This will be used to provide
9 additional functionality for ASN1_TIME.
12 *) New -sigopt option to the ca, req and x509 utilities. Additional
13 signature parameters can be passed using this option and in
17 *) Add RSA PSS signing function. This will generate and set the
18 appropriate AlgorithmIdentifiers for PSS based on those in the
19 corresponding EVP_MD_CTX structure. No application support yet.
22 *) Support for companion algorithm specific ASN1 signing routines.
23 New function ASN1_item_sign_ctx() signs a pre-initialised
24 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
25 the appropriate parameters.
28 *) Add new algorithm specific ASN1 verification initialisation function
29 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
30 handling will be the same no matter what EVP_PKEY_METHOD is used.
31 Add a PSS handler to support verification of PSS signatures: checked
32 against a number of sample certificates.
35 *) Add signature printing for PSS. Add PSS OIDs.
36 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
38 *) Add algorithm specific signature printing. An individual ASN1 method
39 can now print out signatures instead of the standard hex dump.
41 More complex signatures (e.g. PSS) can print out more meaningful
42 information. Include DSA version that prints out the signature
46 *) Add -trusted_first option which attempts to find certificates in the
47 trusted store even if an untrusted chain is also supplied.
50 *) Initial experimental support for explicitly trusted non-root CAs.
51 OpenSSL still tries to build a complete chain to a root but if an
52 intermediate CA has a trust setting included that is used. The first
53 setting is used: whether to trust or reject.
56 *) New -verify_name option in command line utilities to set verification
60 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
61 Add CMAC pkey methods.
64 *) Experiemental regnegotiation in s_server -www mode. If the client
65 browses /reneg connection is renegotiated. If /renegcert it is
66 renegotiated requesting a certificate.
69 *) Add an "external" session cache for debugging purposes to s_server. This
70 should help trace issues which normally are only apparent in deployed
71 multi-process servers.
74 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
75 a few changes are required:
77 Add SSL_OP_NO_TLSv1_1 flag.
79 Update version checking logic to handle version 1.1.
80 Add explicit IV handling (ported from DTLS code).
81 Add command line options to s_client/s_server.
84 *) Experiemental password based recipient info support for CMS library:
88 *) Split password based encryption into PBES2 and PBKDF2 functions. This
89 neatly separates the code into cipher and PBE sections and is required
90 for some algorithms that split PBES2 into separate pieces (such as
94 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
95 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
96 BIO_set_cipher() and some obscure PEM functions were changed so they
97 can now return an error. The RAND changes required a change to the
98 RAND_METHOD structure.
101 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
102 a gcc attribute to warn if the result of a function is ignored. This
103 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
104 whose return value is often ignored.
107 Changes between 1.0.0 and 1.0.0a [xx XXX xxxx]
109 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
111 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
113 Changes between 0.9.8n and 1.0.0 [xx XXX xxxx]
115 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
116 context. The operation can be customised via the ctrl mechanism in
117 case ENGINEs want to include additional functionality.
120 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
123 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
124 output hashes compatible with older versions of OpenSSL.
125 [Willy Weisz <weisz@vcpc.univie.ac.at>]
127 *) Fix compression algorithm handling: if resuming a session use the
128 compression algorithm of the resumed session instead of determining
129 it from client hello again. Don't allow server to change algorithm.
132 *) Add load_crls() function to apps tidying load_certs() too. Add option
133 to verify utility to allow additional CRLs to be included.
136 *) Update OCSP request code to permit adding custom headers to the request:
137 some responders need this.
140 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
142 [Julia Lawall <julia@diku.dk>]
144 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
145 needlessly dereferenced structures, used obsolete functions and
146 didn't handle all updated verify codes correctly.
149 *) Disable MD2 in the default configuration.
152 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
153 indicate the initial BIO being pushed or popped. This makes it possible
154 to determine whether the BIO is the one explicitly called or as a result
155 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
156 it handles reference counts correctly and doesn't zero out the I/O bio
157 when it is not being explicitly popped. WARNING: applications which
158 included workarounds for the old buggy behaviour will need to be modified
159 or they could free up already freed BIOs.
162 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
163 renaming to all platforms (within the 0.9.8 branch, this was
164 done conditionally on Netware platforms to avoid a name clash).
165 [Guenter <lists@gknw.net>]
167 *) Add ECDHE and PSK support to DTLS.
168 [Michael Tuexen <tuexen@fh-muenster.de>]
170 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
174 *) Add "missing" function EVP_MD_flags() (without this the only way to
175 retrieve a digest flags is by accessing the structure directly. Update
176 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
177 or cipher is registered as in the "from" argument. Print out all
178 registered digests in the dgst usage message instead of manually
179 attempting to work them out.
182 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
183 this allows the use of compression and extensions. Change default cipher
184 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
185 by default unless an application cipher string requests it.
188 *) Alter match criteria in PKCS12_parse(). It used to try to use local
189 key ids to find matching certificates and keys but some PKCS#12 files
190 don't follow the (somewhat unwritten) rules and this strategy fails.
191 Now just gather all certificates together and the first private key
192 then look for the first certificate that matches the key.
195 *) Support use of registered digest and cipher names for dgst and cipher
196 commands instead of having to add each one as a special case. So now
203 openssl dgst -sha256 foo
205 and this works for ENGINE based algorithms too.
209 *) Update Gost ENGINE to support parameter files.
210 [Victor B. Wagner <vitus@cryptocom.ru>]
212 *) Support GeneralizedTime in ca utility.
213 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
215 *) Enhance the hash format used for certificate directory links. The new
216 form uses the canonical encoding (meaning equivalent names will work
217 even if they aren't identical) and uses SHA1 instead of MD5. This form
218 is incompatible with the older format and as a result c_rehash should
219 be used to rebuild symbolic links.
222 *) Make PKCS#8 the default write format for private keys, replacing the
223 traditional format. This form is standardised, more secure and doesn't
224 include an implicit MD5 dependency.
227 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
228 committed to OpenSSL should pass this lot as a minimum.
231 *) Add session ticket override functionality for use by EAP-FAST.
232 [Jouni Malinen <j@w1.fi>]
234 *) Modify HMAC functions to return a value. Since these can be implemented
235 in an ENGINE errors can occur.
238 *) Type-checked OBJ_bsearch_ex.
241 *) Type-checked OBJ_bsearch. Also some constification necessitated
242 by type-checking. Still to come: TXT_DB, bsearch(?),
243 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
247 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
248 seconds to a tm structure directly, instead of going through OS
249 specific date routines. This avoids any issues with OS routines such
250 as the year 2038 bug. New *_adj() functions for ASN1 time structures
251 and X509_time_adj_ex() to cover the extended range. The existing
252 X509_time_adj() is still usable and will no longer have any date issues.
255 *) Delta CRL support. New use deltas option which will attempt to locate
256 and search any appropriate delta CRLs available.
258 This work was sponsored by Google.
261 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
262 code and add additional score elements. Validate alternate CRL paths
263 as part of the CRL checking and indicate a new error "CRL path validation
264 error" in this case. Applications wanting additional details can use
265 the verify callback and check the new "parent" field. If this is not
266 NULL CRL path validation is taking place. Existing applications wont
267 see this because it requires extended CRL support which is off by
270 This work was sponsored by Google.
273 *) Support for freshest CRL extension.
275 This work was sponsored by Google.
278 *) Initial indirect CRL support. Currently only supported in the CRLs
279 passed directly and not via lookup. Process certificate issuer
280 CRL entry extension and lookup CRL entries by bother issuer name
281 and serial number. Check and process CRL issuer entry in IDP extension.
283 This work was sponsored by Google.
286 *) Add support for distinct certificate and CRL paths. The CRL issuer
287 certificate is validated separately in this case. Only enabled if
288 an extended CRL support flag is set: this flag will enable additional
289 CRL functionality in future.
291 This work was sponsored by Google.
294 *) Add support for policy mappings extension.
296 This work was sponsored by Google.
299 *) Fixes to pathlength constraint, self issued certificate handling,
300 policy processing to align with RFC3280 and PKITS tests.
302 This work was sponsored by Google.
305 *) Support for name constraints certificate extension. DN, email, DNS
306 and URI types are currently supported.
308 This work was sponsored by Google.
311 *) To cater for systems that provide a pointer-based thread ID rather
312 than numeric, deprecate the current numeric thread ID mechanism and
313 replace it with a structure and associated callback type. This
314 mechanism allows a numeric "hash" to be extracted from a thread ID in
315 either case, and on platforms where pointers are larger than 'long',
316 mixing is done to help ensure the numeric 'hash' is usable even if it
317 can't be guaranteed unique. The default mechanism is to use "&errno"
318 as a pointer-based thread ID to distinguish between threads.
320 Applications that want to provide their own thread IDs should now use
321 CRYPTO_THREADID_set_callback() to register a callback that will call
322 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
324 Note that ERR_remove_state() is now deprecated, because it is tied
325 to the assumption that thread IDs are numeric. ERR_remove_state(0)
326 to free the current thread's error state should be replaced by
327 ERR_remove_thread_state(NULL).
329 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
330 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
331 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
332 application was previously providing a numeric thread callback that
333 was inappropriate for distinguishing threads, then uniqueness might
334 have been obtained with &errno that happened immediately in the
335 intermediate development versions of OpenSSL; this is no longer the
336 case, the numeric thread callback will now override the automatic use
338 [Geoff Thorpe, with help from Bodo Moeller]
340 *) Initial support for different CRL issuing certificates. This covers a
341 simple case where the self issued certificates in the chain exist and
342 the real CRL issuer is higher in the existing chain.
344 This work was sponsored by Google.
347 *) Removed effectively defunct crypto/store from the build.
350 *) Revamp of STACK to provide stronger type-checking. Still to come:
351 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
352 ASN1_STRING, CONF_VALUE.
355 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
356 RAM on SSL connections. This option can save about 34k per idle SSL.
359 *) Revamp of LHASH to provide stronger type-checking. Still to come:
360 STACK, TXT_DB, bsearch, qsort.
363 *) Initial support for Cryptographic Message Syntax (aka CMS) based
364 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
365 support for data, signedData, compressedData, digestedData and
366 encryptedData, envelopedData types included. Scripts to check against
367 RFC4134 examples draft and interop and consistency checks of many
368 content types and variants.
371 *) Add options to enc utility to support use of zlib compression BIO.
374 *) Extend mk1mf to support importing of options and assembly language
375 files from Configure script, currently only included in VC-WIN32.
376 The assembly language rules can now optionally generate the source
377 files from the associated perl scripts.
380 *) Implement remaining functionality needed to support GOST ciphersuites.
381 Interop testing has been performed using CryptoPro implementations.
382 [Victor B. Wagner <vitus@cryptocom.ru>]
384 *) s390x assembler pack.
387 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
391 *) Implement Opaque PRF Input TLS extension as specified in
392 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
393 official specification yet and no extension type assignment by
394 IANA exists, this extension (for now) will have to be explicitly
395 enabled when building OpenSSL by providing the extension number
396 to use. For example, specify an option
398 -DTLSEXT_TYPE_opaque_prf_input=0x9527
400 to the "config" or "Configure" script to enable the extension,
401 assuming extension number 0x9527 (which is a completely arbitrary
402 and unofficial assignment based on the MD5 hash of the Internet
403 Draft). Note that by doing so, you potentially lose
404 interoperability with other TLS implementations since these might
405 be using the same extension number for other purposes.
407 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
408 opaque PRF input value to use in the handshake. This will create
409 an interal copy of the length-'len' string at 'src', and will
410 return non-zero for success.
412 To get more control and flexibility, provide a callback function
415 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
416 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
420 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
423 Callback function 'cb' will be called in handshakes, and is
424 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
425 Argument 'arg' is for application purposes (the value as given to
426 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
427 be provided to the callback function). The callback function
428 has to return non-zero to report success: usually 1 to use opaque
429 PRF input just if possible, or 2 to enforce use of the opaque PRF
430 input. In the latter case, the library will abort the handshake
431 if opaque PRF input is not successfully negotiated.
433 Arguments 'peerinput' and 'len' given to the callback function
434 will always be NULL and 0 in the case of a client. A server will
435 see the client's opaque PRF input through these variables if
436 available (NULL and 0 otherwise). Note that if the server
437 provides an opaque PRF input, the length must be the same as the
438 length of the client's opaque PRF input.
440 Note that the callback function will only be called when creating
441 a new session (session resumption can resume whatever was
442 previously negotiated), and will not be called in SSL 2.0
443 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
444 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
445 for applications that need to enforce opaque PRF input.
449 *) Update ssl code to support digests other than SHA1+MD5 for handshake
452 [Victor B. Wagner <vitus@cryptocom.ru>]
454 *) Add RFC4507 support to OpenSSL. This includes the corrections in
455 RFC4507bis. The encrypted ticket format is an encrypted encoded
456 SSL_SESSION structure, that way new session features are automatically
459 If a client application caches session in an SSL_SESSION structure
460 support is transparent because tickets are now stored in the encoded
463 The SSL_CTX structure automatically generates keys for ticket
464 protection in servers so again support should be possible
465 with no application modification.
467 If a client or server wishes to disable RFC4507 support then the option
468 SSL_OP_NO_TICKET can be set.
470 Add a TLS extension debugging callback to allow the contents of any client
471 or server extensions to be examined.
473 This work was sponsored by Google.
476 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
477 OpenSSL should now compile cleanly on gcc 4.2
478 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
480 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
481 support including streaming MAC support: this is required for GOST
483 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
485 *) Add option -stream to use PKCS#7 streaming in smime utility. New
486 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
487 to output in BER and PEM format.
490 *) Experimental support for use of HMAC via EVP_PKEY interface. This
491 allows HMAC to be handled via the EVP_DigestSign*() interface. The
492 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
493 ENGINE support for HMAC keys which are unextractable. New -mac and
494 -macopt options to dgst utility.
497 *) New option -sigopt to dgst utility. Update dgst to use
498 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
499 alternative signing paramaters such as X9.31 or PSS in the dgst
503 *) Change ssl_cipher_apply_rule(), the internal function that does
504 the work each time a ciphersuite string requests enabling
505 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
506 removing ("!foo+bar") a class of ciphersuites: Now it maintains
507 the order of disabled ciphersuites such that those ciphersuites
508 that most recently went from enabled to disabled not only stay
509 in order with respect to each other, but also have higher priority
510 than other disabled ciphersuites the next time ciphersuites are
513 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
514 the same ciphersuites as with "HIGH" alone, but in a specific
515 order where the PSK ciphersuites come first (since they are the
516 most recently disabled ciphersuites when "HIGH" is parsed).
518 Also, change ssl_create_cipher_list() (using this new
519 funcionality) such that between otherwise identical
520 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
524 *) Change ssl_create_cipher_list() so that it automatically
525 arranges the ciphersuites in reasonable order before starting
526 to process the rule string. Thus, the definition for "DEFAULT"
527 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
528 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
529 This makes it much easier to arrive at a reasonable default order
530 in applications for which anonymous ciphers are OK (meaning
531 that you can't actually use DEFAULT).
532 [Bodo Moeller; suggested by Victor Duchovni]
534 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
535 processing) into multiple integers instead of setting
536 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
537 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
538 (These masks as well as the individual bit definitions are hidden
539 away into the non-exported interface ssl/ssl_locl.h, so this
540 change to the definition of the SSL_CIPHER structure shouldn't
541 affect applications.) This give us more bits for each of these
542 categories, so there is no longer a need to coagulate AES128 and
543 AES256 into a single algorithm bit, and to coagulate Camellia128
544 and Camellia256 into a single algorithm bit, which has led to all
547 Thus, among other things, the kludge introduced in 0.9.7m and
548 0.9.8e for masking out AES256 independently of AES128 or masking
549 out Camellia256 independently of AES256 is not needed here in 0.9.9.
551 With the change, we also introduce new ciphersuite aliases that
552 so far were missing: "AES128", "AES256", "CAMELLIA128", and
556 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
557 Use the leftmost N bytes of the signature input if the input is
558 larger than the prime q (with N being the size in bytes of q).
561 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
562 it yet and it is largely untested.
565 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
568 *) Initial incomplete changes to avoid need for function casts in OpenSSL
569 some compilers (gcc 4.2 and later) reject their use. Safestack is
570 reimplemented. Update ASN1 to avoid use of legacy functions.
573 *) Win32/64 targets are linked with Winsock2.
576 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
577 to external functions. This can be used to increase CRL handling
578 efficiency especially when CRLs are very large by (for example) storing
579 the CRL revoked certificates in a database.
582 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
583 new CRLs added to a directory can be used. New command line option
584 -verify_return_error to s_client and s_server. This causes real errors
585 to be returned by the verify callback instead of carrying on no matter
586 what. This reflects the way a "real world" verify callback would behave.
589 *) GOST engine, supporting several GOST algorithms and public key formats.
590 Kindly donated by Cryptocom.
593 *) Partial support for Issuing Distribution Point CRL extension. CRLs
594 partitioned by DP are handled but no indirect CRL or reason partitioning
595 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
596 selected via a scoring technique which handles IDP and AKID in CRLs.
599 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
600 will ultimately be used for all verify operations: this will remove the
601 X509_STORE dependency on certificate verification and allow alternative
602 lookup methods. X509_STORE based implementations of these two callbacks.
605 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
606 Modify get_crl() to find a valid (unexpired) CRL if possible.
609 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
610 this would be called X509_CRL_cmp() but that name is already used by
611 a function that just compares CRL issuer names. Cache several CRL
612 extensions in X509_CRL structure and cache CRLDP in X509.
615 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
616 this maps equivalent X509_NAME structures into a consistent structure.
617 Name comparison can then be performed rapidly using memcmp().
620 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
624 *) Allow digests to supply their own micalg string for S/MIME type using
625 the ctrl EVP_MD_CTRL_MICALG.
628 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
629 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
630 ctrl. It can then customise the structure before and/or after signing
634 *) New function OBJ_add_sigid() to allow application defined signature OIDs
635 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
636 to free up any added signature OIDs.
639 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
640 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
641 digest and cipher tables. New options added to openssl utility:
642 list-message-digest-algorithms and list-cipher-algorithms.
645 *) Change the array representation of binary polynomials: the list
646 of degrees of non-zero coefficients is now terminated with -1.
647 Previously it was terminated with 0, which was also part of the
648 value; thus, the array representation was not applicable to
649 polynomials where t^0 has coefficient zero. This change makes
650 the array representation useful in a more general context.
653 *) Various modifications and fixes to SSL/TLS cipher string
654 handling. For ECC, the code now distinguishes between fixed ECDH
655 with RSA certificates on the one hand and with ECDSA certificates
656 on the other hand, since these are separate ciphersuites. The
657 unused code for Fortezza ciphersuites has been removed.
659 For consistency with EDH, ephemeral ECDH is now called "EECDH"
660 (not "ECDHE"). For consistency with the code for DH
661 certificates, use of ECDH certificates is now considered ECDH
662 authentication, not RSA or ECDSA authentication (the latter is
663 merely the CA's signing algorithm and not actively used in the
666 The temporary ciphersuite alias "ECCdraft" is no longer
667 available, and ECC ciphersuites are no longer excluded from "ALL"
668 and "DEFAULT". The following aliases now exist for RFC 4492
669 ciphersuites, most of these by analogy with the DH case:
671 kECDHr - ECDH cert, signed with RSA
672 kECDHe - ECDH cert, signed with ECDSA
673 kECDH - ECDH cert (signed with either RSA or ECDSA)
674 kEECDH - ephemeral ECDH
675 ECDH - ECDH cert or ephemeral ECDH
681 AECDH - anonymous ECDH
682 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
686 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
687 Use correct micalg parameters depending on digest(s) in signed message.
690 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
691 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
694 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
695 an engine to register a method. Add ENGINE lookups for methods and
696 functional reference processing.
699 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
700 EVP_{Sign,Verify}* which allow an application to customise the signature
704 *) New -resign option to smime utility. This adds one or more signers
705 to an existing PKCS#7 signedData structure. Also -md option to use an
706 alternative message digest algorithm for signing.
709 *) Tidy up PKCS#7 routines and add new functions to make it easier to
710 create PKCS7 structures containing multiple signers. Update smime
711 application to support multiple signers.
714 *) New -macalg option to pkcs12 utility to allow setting of an alternative
718 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
719 Reorganize PBE internals to lookup from a static table using NIDs,
720 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
721 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
722 PRF which will be automatically used with PBES2.
725 *) Replace the algorithm specific calls to generate keys in "req" with the
729 *) Update PKCS#7 enveloped data routines to use new API. This is now
730 supported by any public key method supporting the encrypt operation. A
731 ctrl is added to allow the public key algorithm to examine or modify
732 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
736 *) Add a ctrl to asn1 method to allow a public key algorithm to express
737 a default digest type to use. In most cases this will be SHA1 but some
738 algorithms (such as GOST) need to specify an alternative digest. The
739 return value indicates how strong the prefernce is 1 means optional and
740 2 is mandatory (that is it is the only supported type). Modify
741 ASN1_item_sign() to accept a NULL digest argument to indicate it should
742 use the default md. Update openssl utilities to use the default digest
743 type for signing if it is not explicitly indicated.
746 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
747 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
748 signing method from the key type. This effectively removes the link
749 between digests and public key types.
752 *) Add an OID cross reference table and utility functions. Its purpose is to
753 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
754 rsaEncryption. This will allow some of the algorithm specific hackery
755 needed to use the correct OID to be removed.
758 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
759 structures for PKCS7_sign(). They are now set up by the relevant public
763 *) Add provisional EC pkey method with support for ECDSA and ECDH.
766 *) Add support for key derivation (agreement) in the API, DH method and
770 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
771 public and private key formats. As a side effect these add additional
772 command line functionality not previously available: DSA signatures can be
773 generated and verified using pkeyutl and DH key support and generation in
778 [Oliver Tappe <zooey@hirschkaefer.de>]
780 *) New make target "install_html_docs" installs HTML renditions of the
782 [Oliver Tappe <zooey@hirschkaefer.de>]
784 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
785 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
786 support key and parameter generation and add initial key generation
787 functionality for RSA.
790 *) Add functions for main EVP_PKEY_method operations. The undocumented
791 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
792 EVP_PKEY_{encrypt,decrypt}_old.
795 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
796 key API, doesn't do much yet.
799 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
800 public key algorithms. New option to openssl utility:
801 "list-public-key-algorithms" to print out info.
804 *) Implement the Supported Elliptic Curves Extension for
805 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
808 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
809 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
812 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
813 utilities such as rsa, dsa, dsaparam etc except they process any key
817 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
818 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
819 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
823 *) Initial support for pluggable public key ASN1.
824 De-spaghettify the public key ASN1 handling. Move public and private
825 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
826 algorithm specific handling to a single module within the relevant
827 algorithm directory. Add functions to allow (near) opaque processing
828 of public and private key structures.
831 *) Implement the Supported Point Formats Extension for
832 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
835 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
836 for the psk identity [hint] and the psk callback functions to the
837 SSL_SESSION, SSL and SSL_CTX structure.
840 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
844 SSL_CTX_use_psk_identity_hint
845 SSL_get_psk_identity_hint
847 SSL_use_psk_identity_hint
849 [Mika Kousa and Pasi Eronen of Nokia Corporation]
851 *) Add RFC 3161 compliant time stamp request creation, response generation
852 and response verification functionality.
853 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
855 *) Add initial support for TLS extensions, specifically for the server_name
856 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
857 have new members for a host name. The SSL data structure has an
858 additional member SSL_CTX *initial_ctx so that new sessions can be
859 stored in that context to allow for session resumption, even after the
860 SSL has been switched to a new SSL_CTX in reaction to a client's
861 server_name extension.
863 New functions (subject to change):
866 SSL_get_servername_type()
869 New CTRL codes and macros (subject to change):
871 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
872 - SSL_CTX_set_tlsext_servername_callback()
873 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
874 - SSL_CTX_set_tlsext_servername_arg()
875 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
877 openssl s_client has a new '-servername ...' option.
879 openssl s_server has new options '-servername_host ...', '-cert2 ...',
880 '-key2 ...', '-servername_fatal' (subject to change). This allows
881 testing the HostName extension for a specific single host name ('-cert'
882 and '-key' remain fallbacks for handshakes without HostName
883 negotiation). If the unrecogninzed_name alert has to be sent, this by
884 default is a warning; it becomes fatal with the '-servername_fatal'
887 [Peter Sylvester, Remy Allais, Christophe Renou]
889 *) Whirlpool hash implementation is added.
892 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
893 bn(64,32). Because of instruction set limitations it doesn't have
894 any negative impact on performance. This was done mostly in order
895 to make it possible to share assembler modules, such as bn_mul_mont
896 implementations, between 32- and 64-bit builds without hassle.
899 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
900 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
904 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
905 dedicated Montgomery multiplication procedure, is introduced.
906 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
907 "64-bit" performance on certain 32-bit targets.
910 *) New option SSL_OP_NO_COMP to disable use of compression selectively
911 in SSL structures. New SSL ctrl to set maximum send fragment size.
912 Save memory by seeting the I/O buffer sizes dynamically instead of
913 using the maximum available value.
916 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
917 in addition to the text details.
920 *) Very, very preliminary EXPERIMENTAL support for printing of general
921 ASN1 structures. This currently produces rather ugly output and doesn't
922 handle several customised structures at all.
925 *) Integrated support for PVK file format and some related formats such
926 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
927 these in the 'rsa' and 'dsa' utilities.
930 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
933 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
934 place for the (very old) "NETSCAPE" format certificates which are now
935 handled using new ASN1 code equivalents.
938 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
939 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
940 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
943 *) Modify CRL distribution points extension code to print out previously
944 unsupported fields. Enhance extension setting code to allow setting of
948 *) Add print and set support for Issuing Distribution Point CRL extension.
951 *) Change 'Configure' script to enable Camellia by default.
954 Changes between 0.9.8n and 0.9.8o [xx XXX xxxx]
956 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
957 access or freeing data twice (CVE-2010-0742)
958 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
960 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
961 common in certificates and some applications which only call
962 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
965 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
967 *) When rejecting SSL/TLS records due to an incorrect version number, never
968 update s->server with a new major version number. As of
969 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
970 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
971 the previous behavior could result in a read attempt at NULL when
972 receiving specific incorrect SSL/TLS records once record payload
973 protection is active. (CVE-2010-####)
974 [Bodo Moeller, Adam Langley]
976 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
977 could be crashed if the relevant tables were not present (e.g. chrooted).
978 [Tomas Hoger <thoger@redhat.com>]
980 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
982 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
983 [Martin Olsson, Neel Mehta]
985 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
986 accommodate for stack sorting, always a write lock!).
989 *) On some versions of WIN32 Heap32Next is very slow. This can cause
990 excessive delays in the RAND_poll(): over a minute. As a workaround
991 include a time check in the inner Heap32Next loop too.
994 *) The code that handled flushing of data in SSL/TLS originally used the
995 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
996 the problem outlined in PR#1949. The fix suggested there however can
997 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
998 of Apache). So instead simplify the code to flush unconditionally.
999 This should be fine since flushing with no data to flush is a no op.
1002 *) Handle TLS versions 2.0 and later properly and correctly use the
1003 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1004 off ancient servers have a habit of sticking around for a while...
1007 *) Modify compression code so it frees up structures without using the
1008 ex_data callbacks. This works around a problem where some applications
1009 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1010 restarting) then use compression (e.g. SSL with compression) later.
1011 This results in significant per-connection memory leaks and
1012 has caused some security issues including CVE-2008-1678 and
1016 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1017 change when encrypting or decrypting.
1020 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1021 connect and renegotiate with servers which do not support RI.
1022 Until RI is more widely deployed this option is enabled by default.
1025 *) Add "missing" ssl ctrls to clear options and mode.
1028 *) If client attempts to renegotiate and doesn't support RI respond with
1029 a no_renegotiation alert as required by RFC5746. Some renegotiating
1030 TLS clients will continue a connection gracefully when they receive
1031 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1032 waiting for a server hello which it will never receive. Now we treat a
1033 received no_renegotiation alert as a fatal error. This is because
1034 applications requesting a renegotiation might well expect it to succeed
1035 and would have no code in place to handle the server denying it so the
1036 only safe thing to do is to terminate the connection.
1039 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1040 peer supports secure renegotiation and 0 otherwise. Print out peer
1041 renegotiation support in s_client/s_server.
1044 *) Replace the highly broken and deprecated SPKAC certification method with
1045 the updated NID creation version. This should correctly handle UTF8.
1048 *) Implement RFC5746. Re-enable renegotiation but require the extension
1049 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1050 turns out to be a bad idea. It has been replaced by
1051 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1052 SSL_CTX_set_options(). This is really not recommended unless you
1053 know what you are doing.
1054 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1056 *) Fixes to stateless session resumption handling. Use initial_ctx when
1057 issuing and attempting to decrypt tickets in case it has changed during
1058 servername handling. Use a non-zero length session ID when attempting
1059 stateless session resumption: this makes it possible to determine if
1060 a resumption has occurred immediately after receiving server hello
1061 (several places in OpenSSL subtly assume this) instead of later in
1065 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1066 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1067 fixes for a few places where the return code is not checked
1069 [Julia Lawall <julia@diku.dk>]
1071 *) Add --strict-warnings option to Configure script to include devteam
1072 warnings in other configurations.
1075 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1076 makes it possible to install openssl libraries in locations which
1077 have names other than "lib", for example "/usr/lib64" which some
1079 [Steve Henson, based on patch from Jeremy Utley]
1081 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1082 X690 8.9.12 and can produce some misleading textual output of OIDs.
1083 [Steve Henson, reported by Dan Kaminsky]
1085 *) Delete MD2 from algorithm tables. This follows the recommendation in
1086 several standards that it is not used in new applications due to
1087 several cryptographic weaknesses. For binary compatibility reasons
1088 the MD2 API is still compiled in by default.
1091 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1095 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1096 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1098 [Guenter <lists@gknw.net>]
1100 *) Fix the server certificate chain building code to use X509_verify_cert(),
1101 it used to have an ad-hoc builder which was unable to cope with anything
1102 other than a simple chain.
1103 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1105 *) Don't check self signed certificate signatures in X509_verify_cert()
1106 by default (a flag can override this): it just wastes time without
1107 adding any security. As a useful side effect self signed root CAs
1108 with non-FIPS digests are now usable in FIPS mode.
1111 *) In dtls1_process_out_of_seq_message() the check if the current message
1112 is already buffered was missing. For every new message was memory
1113 allocated, allowing an attacker to perform an denial of service attack
1114 with sending out of seq handshake messages until there is no memory
1115 left. Additionally every future messege was buffered, even if the
1116 sequence number made no sense and would be part of another handshake.
1117 So only messages with sequence numbers less than 10 in advance will be
1118 buffered. (CVE-2009-1378)
1119 [Robin Seggelmann, discovered by Daniel Mentz]
1121 *) Records are buffered if they arrive with a future epoch to be
1122 processed after finishing the corresponding handshake. There is
1123 currently no limitation to this buffer allowing an attacker to perform
1124 a DOS attack with sending records with future epochs until there is no
1125 memory left. This patch adds the pqueue_size() function to detemine
1126 the size of a buffer and limits the record buffer to 100 entries.
1128 [Robin Seggelmann, discovered by Daniel Mentz]
1130 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1131 parent structure is freed. (CVE-2009-1379)
1134 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1135 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1138 [Ilya O. <vrghost@gmail.com>]
1140 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1142 *) Disable renegotiation completely - this fixes a severe security
1143 problem (CVE-2009-3555) at the cost of breaking all
1144 renegotiation. Renegotiation can be re-enabled by setting
1145 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1146 run-time. This is really not recommended unless you know what
1150 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1152 *) Don't set val to NULL when freeing up structures, it is freed up by
1153 underlying code. If sizeof(void *) > sizeof(long) this can result in
1154 zeroing past the valid field. (CVE-2009-0789)
1155 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1157 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1158 checked correctly. This would allow some invalid signed attributes to
1159 appear to verify correctly. (CVE-2009-0591)
1160 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1162 *) Reject UniversalString and BMPString types with invalid lengths. This
1163 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1164 a legal length. (CVE-2009-0590)
1167 *) Set S/MIME signing as the default purpose rather than setting it
1168 unconditionally. This allows applications to override it at the store
1172 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1173 to handle some structures.
1176 *) Improve efficiency of mem_gets: don't search whole buffer each time
1178 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1180 *) New -hex option for openssl rand.
1183 *) Print out UTF8String and NumericString when parsing ASN1.
1186 *) Support NumericString type for name components.
1189 *) Allow CC in the environment to override the automatically chosen
1190 compiler. Note that nothing is done to ensure flags work with the
1194 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1196 *) Properly check EVP_VerifyFinal() and similar return values
1198 [Ben Laurie, Bodo Moeller, Google Security Team]
1200 *) Enable TLS extensions by default.
1203 *) Allow the CHIL engine to be loaded, whether the application is
1204 multithreaded or not. (This does not release the developer from the
1205 obligation to set up the dynamic locking callbacks.)
1206 [Sander Temme <sander@temme.net>]
1208 *) Use correct exit code if there is an error in dgst command.
1209 [Steve Henson; problem pointed out by Roland Dirlewanger]
1211 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1212 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1215 *) Add experimental JPAKE support, including demo authentication in
1216 s_client and s_server.
1219 *) Set the comparison function in v3_addr_canonize().
1220 [Rob Austein <sra@hactrn.net>]
1222 *) Add support for XMPP STARTTLS in s_client.
1223 [Philip Paeps <philip@freebsd.org>]
1225 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1226 to ensure that even with this option, only ciphersuites in the
1227 server's preference list will be accepted. (Note that the option
1228 applies only when resuming a session, so the earlier behavior was
1229 just about the algorithm choice for symmetric cryptography.)
1232 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1234 *) Fix NULL pointer dereference if a DTLS server received
1235 ChangeCipherSpec as first record (CVE-2009-1386).
1238 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1239 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1242 *) The fix in 0.9.8c that supposedly got rid of unsafe
1243 double-checked locking was incomplete for RSA blinding,
1244 addressing just one layer of what turns out to have been
1245 doubly unsafe triple-checked locking.
1247 So now fix this for real by retiring the MONT_HELPER macro
1248 in crypto/rsa/rsa_eay.c.
1250 [Bodo Moeller; problem pointed out by Marius Schilder]
1252 *) Various precautionary measures:
1254 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1256 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1257 (NB: This would require knowledge of the secret session ticket key
1258 to exploit, in which case you'd be SOL either way.)
1260 - Change bn_nist.c so that it will properly handle input BIGNUMs
1261 outside the expected range.
1263 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1266 [Neel Mehta, Bodo Moeller]
1268 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1269 the load fails. Useful for distros.
1270 [Ben Laurie and the FreeBSD team]
1272 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1275 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1278 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1280 This work was sponsored by Logica.
1283 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1284 keystores. Support for SSL/TLS client authentication too.
1285 Not compiled unless enable-capieng specified to Configure.
1287 This work was sponsored by Logica.
1290 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1291 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1292 attribute creation routines such as certifcate requests and PKCS#12
1296 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1298 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1299 handshake which could lead to a cilent crash as found using the
1300 Codenomicon TLS test suite (CVE-2008-1672)
1301 [Steve Henson, Mark Cox]
1303 *) Fix double free in TLS server name extensions which could lead to
1304 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1307 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1309 Clear the error queue to ensure that error entries left from
1310 older function calls do not interfere with the correct operation.
1311 [Lutz Jaenicke, Erik de Castro Lopo]
1313 *) Remove root CA certificates of commercial CAs:
1315 The OpenSSL project does not recommend any specific CA and does not
1316 have any policy with respect to including or excluding any CA.
1317 Therefore it does not make any sense to ship an arbitrary selection
1318 of root CA certificates with the OpenSSL software.
1321 *) RSA OAEP patches to fix two separate invalid memory reads.
1322 The first one involves inputs when 'lzero' is greater than
1323 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1324 before the beginning of from). The second one involves inputs where
1325 the 'db' section contains nothing but zeroes (there is a one-byte
1326 invalid read after the end of 'db').
1327 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1329 *) Partial backport from 0.9.9-dev:
1331 Introduce bn_mul_mont (dedicated Montgomery multiplication
1332 procedure) as a candidate for BIGNUM assembler implementation.
1333 While 0.9.9-dev uses assembler for various architectures, only
1334 x86_64 is available by default here in the 0.9.8 branch, and
1335 32-bit x86 is available through a compile-time setting.
1337 To try the 32-bit x86 assembler implementation, use Configure
1338 option "enable-montasm" (which exists only for this backport).
1340 As "enable-montasm" for 32-bit x86 disclaims code stability
1341 anyway, in this constellation we activate additional code
1342 backported from 0.9.9-dev for further performance improvements,
1343 namely BN_from_montgomery_word. (To enable this otherwise,
1344 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1346 [Andy Polyakov (backport partially by Bodo Moeller)]
1348 *) Add TLS session ticket callback. This allows an application to set
1349 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1350 values. This is useful for key rollover for example where several key
1351 sets may exist with different names.
1354 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1355 This was broken until now in 0.9.8 releases, such that the only way
1356 a registered ENGINE could be used (assuming it initialises
1357 successfully on the host) was to explicitly set it as the default
1358 for the relevant algorithms. This is in contradiction with 0.9.7
1359 behaviour and the documentation. With this fix, when an ENGINE is
1360 registered into a given algorithm's table of implementations, the
1361 'uptodate' flag is reset so that auto-discovery will be used next
1362 time a new context for that algorithm attempts to select an
1364 [Ian Lister (tweaked by Geoff Thorpe)]
1366 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1367 implemention in the following ways:
1369 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1372 Lack of BER streaming support means one pass streaming processing is
1373 only supported if data is detached: setting the streaming flag is
1374 ignored for embedded content.
1376 CMS support is disabled by default and must be explicitly enabled
1377 with the enable-cms configuration option.
1380 *) Update the GMP engine glue to do direct copies between BIGNUM and
1381 mpz_t when openssl and GMP use the same limb size. Otherwise the
1382 existing "conversion via a text string export" trick is still used.
1383 [Paul Sheer <paulsheer@gmail.com>]
1385 *) Zlib compression BIO. This is a filter BIO which compressed and
1386 uncompresses any data passed through it.
1389 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1390 RFC3394 compatible AES key wrapping.
1393 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1394 sets string data without copying. X509_ALGOR_set0() and
1395 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1396 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1397 from an X509_ATTRIBUTE structure optionally checking it occurs only
1398 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1402 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1403 to get the expected BN_FLG_CONSTTIME behavior.
1404 [Bodo Moeller (Google)]
1408 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1409 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1410 - added some more tests to do_tests.pl
1411 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1412 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1413 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1414 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1415 - various changes to netware.pl to enable gcc-cross builds on Win32
1417 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1418 - various changes to fix missing prototype warnings
1419 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1420 - added AES, WHIRLPOOL and CPUID assembler code to build files
1421 - added missing AES assembler make rules to mk1mf.pl
1422 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1423 [Guenter Knauf <eflash@gmx.net>]
1425 *) Implement certificate status request TLS extension defined in RFC3546.
1426 A client can set the appropriate parameters and receive the encoded
1427 OCSP response via a callback. A server can query the supplied parameters
1428 and set the encoded OCSP response in the callback. Add simplified examples
1429 to s_client and s_server.
1432 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1434 *) Fix various bugs:
1435 + Binary incompatibility of ssl_ctx_st structure
1436 + DTLS interoperation with non-compliant servers
1437 + Don't call get_session_cb() without proposed session
1438 + Fix ia64 assembler code
1439 [Andy Polyakov, Steve Henson]
1441 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1443 *) DTLS Handshake overhaul. There were longstanding issues with
1444 OpenSSL DTLS implementation, which were making it impossible for
1445 RFC 4347 compliant client to communicate with OpenSSL server.
1446 Unfortunately just fixing these incompatibilities would "cut off"
1447 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1448 server keeps tolerating non RFC compliant syntax. The opposite is
1449 not true, 0.9.8f client can not communicate with earlier server.
1450 This update even addresses CVE-2007-4995.
1453 *) Changes to avoid need for function casts in OpenSSL: some compilers
1454 (gcc 4.2 and later) reject their use.
1455 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1458 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1459 RFC4507bis. The encrypted ticket format is an encrypted encoded
1460 SSL_SESSION structure, that way new session features are automatically
1463 If a client application caches session in an SSL_SESSION structure
1464 support is transparent because tickets are now stored in the encoded
1467 The SSL_CTX structure automatically generates keys for ticket
1468 protection in servers so again support should be possible
1469 with no application modification.
1471 If a client or server wishes to disable RFC4507 support then the option
1472 SSL_OP_NO_TICKET can be set.
1474 Add a TLS extension debugging callback to allow the contents of any client
1475 or server extensions to be examined.
1477 This work was sponsored by Google.
1480 *) Add initial support for TLS extensions, specifically for the server_name
1481 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1482 have new members for a host name. The SSL data structure has an
1483 additional member SSL_CTX *initial_ctx so that new sessions can be
1484 stored in that context to allow for session resumption, even after the
1485 SSL has been switched to a new SSL_CTX in reaction to a client's
1486 server_name extension.
1488 New functions (subject to change):
1490 SSL_get_servername()
1491 SSL_get_servername_type()
1494 New CTRL codes and macros (subject to change):
1496 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1497 - SSL_CTX_set_tlsext_servername_callback()
1498 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1499 - SSL_CTX_set_tlsext_servername_arg()
1500 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1502 openssl s_client has a new '-servername ...' option.
1504 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1505 '-key2 ...', '-servername_fatal' (subject to change). This allows
1506 testing the HostName extension for a specific single host name ('-cert'
1507 and '-key' remain fallbacks for handshakes without HostName
1508 negotiation). If the unrecogninzed_name alert has to be sent, this by
1509 default is a warning; it becomes fatal with the '-servername_fatal'
1512 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1514 *) Add AES and SSE2 assembly language support to VC++ build.
1517 *) Mitigate attack on final subtraction in Montgomery reduction.
1520 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1521 (which previously caused an internal error).
1524 *) Squeeze another 10% out of IGE mode when in != out.
1527 *) AES IGE mode speedup.
1528 [Dean Gaudet (Google)]
1530 *) Add the Korean symmetric 128-bit cipher SEED (see
1531 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1532 add SEED ciphersuites from RFC 4162:
1534 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1535 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1536 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1537 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1539 To minimize changes between patchlevels in the OpenSSL 0.9.8
1540 series, SEED remains excluded from compilation unless OpenSSL
1541 is configured with 'enable-seed'.
1542 [KISA, Bodo Moeller]
1544 *) Mitigate branch prediction attacks, which can be practical if a
1545 single processor is shared, allowing a spy process to extract
1546 information. For detailed background information, see
1547 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1548 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1549 and Necessary Software Countermeasures"). The core of the change
1550 are new versions BN_div_no_branch() and
1551 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1552 respectively, which are slower, but avoid the security-relevant
1553 conditional branches. These are automatically called by BN_div()
1554 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1555 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1556 remove a conditional branch.
1558 BN_FLG_CONSTTIME is the new name for the previous
1559 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1560 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1561 in the exponent causes BN_mod_exp_mont() to use the alternative
1562 implementation in BN_mod_exp_mont_consttime().) The old name
1563 remains as a deprecated alias.
1565 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1566 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1567 constant-time implementations for more than just exponentiation.
1568 Here too the old name is kept as a deprecated alias.
1570 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1571 the BN_BLINDING structure gets an independent copy of the
1572 modulus. This means that the previous "BIGNUM *m" argument to
1573 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1574 essentially becomes "const BIGNUM *m", although we can't actually
1575 change this in the header file before 0.9.9. It allows
1576 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1577 enable BN_FLG_CONSTTIME.
1579 [Matthew D Wood (Intel Corp)]
1581 *) In the SSL/TLS server implementation, be strict about session ID
1582 context matching (which matters if an application uses a single
1583 external cache for different purposes). Previously,
1584 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1585 set. This did ensure strict client verification, but meant that,
1586 with applications using a single external cache for quite
1587 different requirements, clients could circumvent ciphersuite
1588 restrictions for a given session ID context by starting a session
1589 in a different context.
1592 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1593 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1594 authentication-only ciphersuites.
1597 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1598 not complete and could lead to a possible single byte overflow
1599 (CVE-2007-5135) [Ben Laurie]
1601 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1603 *) Since AES128 and AES256 (and similarly Camellia128 and
1604 Camellia256) share a single mask bit in the logic of
1605 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1606 kludge to work properly if AES128 is available and AES256 isn't
1607 (or if Camellia128 is available and Camellia256 isn't).
1610 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1611 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1612 When a point or a seed is encoded in a BIT STRING, we need to
1613 prevent the removal of trailing zero bits to get the proper DER
1614 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1615 of a NamedBitList, for which trailing 0 bits need to be removed.)
1618 *) Have SSL/TLS server implementation tolerate "mismatched" record
1619 protocol version while receiving ClientHello even if the
1620 ClientHello is fragmented. (The server can't insist on the
1621 particular protocol version it has chosen before the ServerHello
1622 message has informed the client about his choice.)
1625 *) Add RFC 3779 support.
1626 [Rob Austein for ARIN, Ben Laurie]
1628 *) Load error codes if they are not already present instead of using a
1629 static variable. This allows them to be cleanly unloaded and reloaded.
1630 Improve header file function name parsing.
1633 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1634 or CAPABILITY handshake as required by RFCs.
1637 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1639 *) Introduce limits to prevent malicious keys being able to
1640 cause a denial of service. (CVE-2006-2940)
1641 [Steve Henson, Bodo Moeller]
1643 *) Fix ASN.1 parsing of certain invalid structures that can result
1644 in a denial of service. (CVE-2006-2937) [Steve Henson]
1646 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1647 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1649 *) Fix SSL client code which could crash if connecting to a
1650 malicious SSLv2 server. (CVE-2006-4343)
1651 [Tavis Ormandy and Will Drewry, Google Security Team]
1653 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1654 match only those. Before that, "AES256-SHA" would be interpreted
1655 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1656 the same strength classification in 0.9.7h) as we currently only
1657 have a single AES bit in the ciphersuite description bitmap.
1658 That change, however, also applied to ciphersuite strings such as
1659 "RC4-MD5" that intentionally matched multiple ciphersuites --
1660 namely, SSL 2.0 ciphersuites in addition to the more common ones
1661 from SSL 3.0/TLS 1.0.
1663 So we change the selection algorithm again: Naming an explicit
1664 ciphersuite selects this one ciphersuite, and any other similar
1665 ciphersuite (same bitmap) from *other* protocol versions.
1666 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1667 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1669 Since SSL 2.0 does not have any ciphersuites for which the
1670 128/256 bit distinction would be relevant, this works for now.
1671 The proper fix will be to use different bits for AES128 and
1672 AES256, which would have avoided the problems from the beginning;
1673 however, bits are scarce, so we can only do this in a new release
1674 (not just a patchlevel) when we can change the SSL_CIPHER
1675 definition to split the single 'unsigned long mask' bitmap into
1676 multiple values to extend the available space.
1680 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1682 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1683 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1685 *) Add AES IGE and biIGE modes.
1688 *) Change the Unix randomness entropy gathering to use poll() when
1689 possible instead of select(), since the latter has some
1690 undesirable limitations.
1691 [Darryl Miles via Richard Levitte and Bodo Moeller]
1693 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
1694 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
1695 cannot be implicitly activated as part of, e.g., the "AES" alias.
1696 However, please upgrade to OpenSSL 0.9.9[-dev] for
1697 non-experimental use of the ECC ciphersuites to get TLS extension
1698 support, which is required for curve and point format negotiation
1699 to avoid potential handshake problems.
1702 *) Disable rogue ciphersuites:
1704 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1705 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1706 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1708 The latter two were purportedly from
1709 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1712 Also deactivate the remaining ciphersuites from
1713 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1714 unofficial, and the ID has long expired.
1717 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1718 dual-core machines) and other potential thread-safety issues.
1721 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
1722 versions), which is now available for royalty-free use
1723 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
1724 Also, add Camellia TLS ciphersuites from RFC 4132.
1726 To minimize changes between patchlevels in the OpenSSL 0.9.8
1727 series, Camellia remains excluded from compilation unless OpenSSL
1728 is configured with 'enable-camellia'.
1731 *) Disable the padding bug check when compression is in use. The padding
1732 bug check assumes the first packet is of even length, this is not
1733 necessarily true if compresssion is enabled and can result in false
1734 positives causing handshake failure. The actual bug test is ancient
1735 code so it is hoped that implementations will either have fixed it by
1736 now or any which still have the bug do not support compression.
1739 Changes between 0.9.8a and 0.9.8b [04 May 2006]
1741 *) When applying a cipher rule check to see if string match is an explicit
1742 cipher suite and only match that one cipher suite if it is.
1745 *) Link in manifests for VC++ if needed.
1746 [Austin Ziegler <halostatue@gmail.com>]
1748 *) Update support for ECC-based TLS ciphersuites according to
1749 draft-ietf-tls-ecc-12.txt with proposed changes (but without
1750 TLS extensions, which are supported starting with the 0.9.9
1751 branch, not in the OpenSSL 0.9.8 branch).
1754 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
1755 opaque EVP_CIPHER_CTX handling.
1758 *) Fixes and enhancements to zlib compression code. We now only use
1759 "zlib1.dll" and use the default __cdecl calling convention on Win32
1760 to conform with the standards mentioned here:
1761 http://www.zlib.net/DLL_FAQ.txt
1762 Static zlib linking now works on Windows and the new --with-zlib-include
1763 --with-zlib-lib options to Configure can be used to supply the location
1764 of the headers and library. Gracefully handle case where zlib library
1768 *) Several fixes and enhancements to the OID generation code. The old code
1769 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
1770 handle numbers larger than ULONG_MAX, truncated printing and had a
1771 non standard OBJ_obj2txt() behaviour.
1774 *) Add support for building of engines under engine/ as shared libraries
1775 under VC++ build system.
1778 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
1779 Hopefully, we will not see any false combination of paths any more.
1782 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
1784 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1785 (part of SSL_OP_ALL). This option used to disable the
1786 countermeasure against man-in-the-middle protocol-version
1787 rollback in the SSL 2.0 server implementation, which is a bad
1788 idea. (CVE-2005-2969)
1790 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1791 for Information Security, National Institute of Advanced Industrial
1792 Science and Technology [AIST], Japan)]
1794 *) Add two function to clear and return the verify parameter flags.
1797 *) Keep cipherlists sorted in the source instead of sorting them at
1798 runtime, thus removing the need for a lock.
1801 *) Avoid some small subgroup attacks in Diffie-Hellman.
1802 [Nick Mathewson and Ben Laurie]
1804 *) Add functions for well-known primes.
1807 *) Extended Windows CE support.
1808 [Satoshi Nakamura and Andy Polyakov]
1810 *) Initialize SSL_METHOD structures at compile time instead of during
1811 runtime, thus removing the need for a lock.
1814 *) Make PKCS7_decrypt() work even if no certificate is supplied by
1815 attempting to decrypt each encrypted key in turn. Add support to
1819 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
1821 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
1824 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
1827 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
1828 key into the same file any more.
1831 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
1834 *) Add -utf8 command line and config file option to 'ca'.
1835 [Stefan <stf@udoma.org]
1837 *) Removed the macro des_crypt(), as it seems to conflict with some
1838 libraries. Use DES_crypt().
1841 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
1842 involves renaming the source and generated shared-libs for
1843 both. The engines will accept the corrected or legacy ids
1844 ('ncipher' and '4758_cca' respectively) when binding. NB,
1845 this only applies when building 'shared'.
1846 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
1848 *) Add attribute functions to EVP_PKEY structure. Modify
1849 PKCS12_create() to recognize a CSP name attribute and
1850 use it. Make -CSP option work again in pkcs12 utility.
1853 *) Add new functionality to the bn blinding code:
1854 - automatic re-creation of the BN_BLINDING parameters after
1855 a fixed number of uses (currently 32)
1856 - add new function for parameter creation
1857 - introduce flags to control the update behaviour of the
1858 BN_BLINDING parameters
1859 - hide BN_BLINDING structure
1860 Add a second BN_BLINDING slot to the RSA structure to improve
1861 performance when a single RSA object is shared among several
1865 *) Add support for DTLS.
1866 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
1868 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
1869 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
1872 *) Remove buggy and incompletet DH cert support from
1873 ssl/ssl_rsa.c and ssl/s3_both.c
1876 *) Use SHA-1 instead of MD5 as the default digest algorithm for
1877 the apps/openssl applications.
1880 *) Compile clean with "-Wall -Wmissing-prototypes
1881 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
1882 DEBUG_SAFESTACK must also be set.
1885 *) Change ./Configure so that certain algorithms can be disabled by default.
1886 The new counterpiece to "no-xxx" is "enable-xxx".
1888 The patented RC5 and MDC2 algorithms will now be disabled unless
1889 "enable-rc5" and "enable-mdc2", respectively, are specified.
1891 (IDEA remains enabled despite being patented. This is because IDEA
1892 is frequently required for interoperability, and there is no license
1893 fee for non-commercial use. As before, "no-idea" can be used to
1894 avoid this algorithm.)
1898 *) Add processing of proxy certificates (see RFC 3820). This work was
1899 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
1900 EGEE (Enabling Grids for E-science in Europe).
1903 *) RC4 performance overhaul on modern architectures/implementations, such
1904 as Intel P4, IA-64 and AMD64.
1907 *) New utility extract-section.pl. This can be used specify an alternative
1908 section number in a pod file instead of having to treat each file as
1909 a separate case in Makefile. This can be done by adding two lines to the
1912 =for comment openssl_section:XXX
1914 The blank line is mandatory.
1918 *) New arguments -certform, -keyform and -pass for s_client and s_server
1919 to allow alternative format key and certificate files and passphrase
1923 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
1924 update associated structures and add various utility functions.
1926 Add new policy related verify parameters, include policy checking in
1927 standard verify code. Enhance 'smime' application with extra parameters
1928 to support policy checking and print out.
1931 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
1932 Nehemiah processors. These extensions support AES encryption in hardware
1933 as well as RNG (though RNG support is currently disabled).
1934 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
1936 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
1939 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
1940 [Andy Polyakov and a number of other people]
1942 *) Improved PowerPC platform support. Most notably BIGNUM assembler
1943 implementation contributed by IBM.
1944 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
1946 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
1947 exponent rather than 'unsigned long'. There is a corresponding change to
1948 the new 'rsa_keygen' element of the RSA_METHOD structure.
1949 [Jelte Jansen, Geoff Thorpe]
1951 *) Functionality for creating the initial serial number file is now
1952 moved from CA.pl to the 'ca' utility with a new option -create_serial.
1954 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
1955 number file to 1, which is bound to cause problems. To avoid
1956 the problems while respecting compatibility between different 0.9.7
1957 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
1958 CA.pl for serial number initialization. With the new release 0.9.8,
1959 we can fix the problem directly in the 'ca' utility.)
1962 *) Reduced header interdepencies by declaring more opaque objects in
1963 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
1964 give fewer recursive includes, which could break lazy source code - so
1965 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
1966 developers should define this symbol when building and using openssl to
1967 ensure they track the recommended behaviour, interfaces, [etc], but
1968 backwards-compatible behaviour prevails when this isn't defined.
1971 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
1974 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
1975 This will generate a random key of the appropriate length based on the
1976 cipher context. The EVP_CIPHER can provide its own random key generation
1977 routine to support keys of a specific form. This is used in the des and
1978 3des routines to generate a key of the correct parity. Update S/MIME
1979 code to use new functions and hence generate correct parity DES keys.
1980 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
1981 valid (weak or incorrect parity).
1984 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
1985 as looking them up. This is useful when the verified structure may contain
1986 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
1987 present unless the new PKCS7_NO_CRL flag is asserted.
1990 *) Extend ASN1 oid configuration module. It now additionally accepts the
1993 shortName = some long name, 1.2.3.4
1996 *) Reimplemented the BN_CTX implementation. There is now no more static
1997 limitation on the number of variables it can handle nor the depth of the
1998 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
1999 information can now expand as required, and rather than having a single
2000 static array of bignums, BN_CTX now uses a linked-list of such arrays
2001 allowing it to expand on demand whilst maintaining the usefulness of
2002 BN_CTX's "bundling".
2005 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2006 to allow all RSA operations to function using a single BN_CTX.
2009 *) Preliminary support for certificate policy evaluation and checking. This
2010 is initially intended to pass the tests outlined in "Conformance Testing
2011 of Relying Party Client Certificate Path Processing Logic" v1.07.
2014 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2015 remained unused and not that useful. A variety of other little bignum
2016 tweaks and fixes have also been made continuing on from the audit (see
2020 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2021 associated ASN1, EVP and SSL functions and old ASN1 macros.
2024 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2025 and this should never fail. So the return value from the use of
2026 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2027 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2030 *) BN_CTX_get() should return zero-valued bignums, providing the same
2031 initialised value as BN_new().
2032 [Geoff Thorpe, suggested by Ulf Möller]
2034 *) Support for inhibitAnyPolicy certificate extension.
2037 *) An audit of the BIGNUM code is underway, for which debugging code is
2038 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2039 is considered valid when processing BIGNUMs, and causes execution to
2040 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2041 further steps are taken to deliberately pollute unused data in BIGNUM
2042 structures to try and expose faulty code further on. For now, openssl will
2043 (in its default mode of operation) continue to tolerate the inconsistent
2044 forms that it has tolerated in the past, but authors and packagers should
2045 consider trying openssl and their own applications when compiled with
2046 these debugging symbols defined. It will help highlight potential bugs in
2047 their own code, and will improve the test coverage for OpenSSL itself. At
2048 some point, these tighter rules will become openssl's default to improve
2049 maintainability, though the assert()s and other overheads will remain only
2050 in debugging configurations. See bn.h for more details.
2051 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2053 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2054 that can only be obtained through BN_CTX_new() (which implicitly
2055 initialises it). The presence of this function only made it possible
2056 to overwrite an existing structure (and cause memory leaks).
2059 *) Because of the callback-based approach for implementing LHASH as a
2060 template type, lh_insert() adds opaque objects to hash-tables and
2061 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2062 to clean up those corresponding objects before destroying the hash table
2063 (and losing the object pointers). So some over-zealous constifications in
2064 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2065 objects as "const" and the lh_doall[_arg] callback wrappers are not
2066 prototyped to have "const" restrictions on the object pointers they are
2067 given (and so aren't required to cast them away any more).
2070 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2071 (speed) prefers to use its own implementation. The two implementations
2072 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2073 its object type properly exposed (MS_TM) instead of casting to/from "char
2074 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2075 aren't necessarily the greatest nomenclatures - but this is what was used
2076 internally to the implementation so I've used that for now.
2079 *) Ensure that deprecated functions do not get compiled when
2080 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2081 the self-tests were still using deprecated key-generation functions so
2082 these have been updated also.
2085 *) Reorganise PKCS#7 code to separate the digest location functionality
2086 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2087 New function PKCS7_set_digest() to set the digest type for PKCS#7
2088 digestedData type. Add additional code to correctly generate the
2089 digestedData type and add support for this type in PKCS7 initialization
2093 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2094 structure of type "other".
2097 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2098 sure the loop does correctly stop and breaking ("division by zero")
2099 modulus operations are not performed. The (pre-generated) prime
2100 table crypto/bn/bn_prime.h was already correct, but it could not be
2101 re-generated on some platforms because of the "division by zero"
2102 situation in the script.
2103 [Ralf S. Engelschall]
2105 *) Update support for ECC-based TLS ciphersuites according to
2106 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2107 SHA-1 now is only used for "small" curves (where the
2108 representation of a field element takes up to 24 bytes); for
2109 larger curves, the field element resulting from ECDH is directly
2110 used as premaster secret.
2111 [Douglas Stebila (Sun Microsystems Laboratories)]
2113 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2114 curve secp160r1 to the tests.
2115 [Douglas Stebila (Sun Microsystems Laboratories)]
2117 *) Add the possibility to load symbols globally with DSO.
2118 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2120 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2121 control of the error stack.
2124 *) Add support for STORE in ENGINE.
2127 *) Add the STORE type. The intention is to provide a common interface
2128 to certificate and key stores, be they simple file-based stores, or
2129 HSM-type store, or LDAP stores, or...
2130 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2133 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2134 pass a list of arguments to any function as well as provide a way
2135 for a function to pass data back to the caller.
2138 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2139 works like BUF_strdup() but can be used to duplicate a portion of
2140 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2144 *) Add the function sk_find_ex() which works like sk_find(), but will
2145 return an index to an element even if an exact match couldn't be
2146 found. The index is guaranteed to point at the element where the
2147 searched-for key would be inserted to preserve sorting order.
2150 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2151 takes an extra flags argument for optional functionality. Currently,
2152 the following flags are defined:
2154 OBJ_BSEARCH_VALUE_ON_NOMATCH
2155 This one gets OBJ_bsearch_ex() to return a pointer to the first
2156 element where the comparing function returns a negative or zero
2159 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2160 This one gets OBJ_bsearch_ex() to return a pointer to the first
2161 element where the comparing function returns zero. This is useful
2162 if there are more than one element where the comparing function
2166 *) Make it possible to create self-signed certificates with 'openssl ca'
2167 in such a way that the self-signed certificate becomes part of the
2168 CA database and uses the same mechanisms for serial number generation
2169 as all other certificate signing. The new flag '-selfsign' enables
2170 this functionality. Adapt CA.sh and CA.pl.in.
2173 *) Add functionality to check the public key of a certificate request
2174 against a given private. This is useful to check that a certificate
2175 request can be signed by that key (self-signing).
2178 *) Make it possible to have multiple active certificates with the same
2179 subject in the CA index file. This is done only if the keyword
2180 'unique_subject' is set to 'no' in the main CA section (default
2181 if 'CA_default') of the configuration file. The value is saved
2182 with the database itself in a separate index attribute file,
2183 named like the index file with '.attr' appended to the name.
2186 *) Generate muti valued AVAs using '+' notation in config files for
2190 *) Support for nameConstraints certificate extension.
2193 *) Support for policyConstraints certificate extension.
2196 *) Support for policyMappings certificate extension.
2199 *) Make sure the default DSA_METHOD implementation only uses its
2200 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2201 and change its own handlers to be NULL so as to remove unnecessary
2202 indirection. This lets alternative implementations fallback to the
2203 default implementation more easily.
2206 *) Support for directoryName in GeneralName related extensions
2210 *) Make it possible to link applications using Makefile.shared.
2211 Make that possible even when linking against static libraries!
2214 *) Support for single pass processing for S/MIME signing. This now
2215 means that S/MIME signing can be done from a pipe, in addition
2216 cleartext signing (multipart/signed type) is effectively streaming
2217 and the signed data does not need to be all held in memory.
2219 This is done with a new flag PKCS7_STREAM. When this flag is set
2220 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2221 is done after the data is output (and digests calculated) in
2222 SMIME_write_PKCS7().
2225 *) Add full support for -rpath/-R, both in shared libraries and
2226 applications, at least on the platforms where it's known how
2230 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2231 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2232 will now compute a table of multiples of the generator that
2233 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2234 faster (notably in the case of a single point multiplication,
2235 scalar * generator).
2236 [Nils Larsch, Bodo Moeller]
2238 *) IPv6 support for certificate extensions. The various extensions
2239 which use the IP:a.b.c.d can now take IPv6 addresses using the
2240 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2244 *) Added an ENGINE that implements RSA by performing private key
2245 exponentiations with the GMP library. The conversions to and from
2246 GMP's mpz_t format aren't optimised nor are any montgomery forms
2247 cached, and on x86 it appears OpenSSL's own performance has caught up.
2248 However there are likely to be other architectures where GMP could
2249 provide a boost. This ENGINE is not built in by default, but it can be
2250 specified at Configure time and should be accompanied by the necessary
2251 linker additions, eg;
2252 ./config -DOPENSSL_USE_GMP -lgmp
2255 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2256 testing availability of engines with "-t" - the old behaviour is
2257 produced by increasing the feature's verbosity with "-tt".
2260 *) ECDSA routines: under certain error conditions uninitialized BN objects
2261 could be freed. Solution: make sure initialization is performed early
2262 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2266 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2267 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2268 software implementations. For DSA and DH, parameter generation can
2269 also be overriden by providing the appropriate method callbacks.
2272 *) Change the "progress" mechanism used in key-generation and
2273 primality testing to functions that take a new BN_GENCB pointer in
2274 place of callback/argument pairs. The new API functions have "_ex"
2275 postfixes and the older functions are reimplemented as wrappers for
2276 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2277 declarations of the old functions to help (graceful) attempts to
2278 migrate to the new functions. Also, the new key-generation API
2279 functions operate on a caller-supplied key-structure and return
2280 success/failure rather than returning a key or NULL - this is to
2281 help make "keygen" another member function of RSA_METHOD etc.
2283 Example for using the new callback interface:
2285 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2289 BN_GENCB_set(&my_cb, my_callback, my_arg);
2291 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2292 /* For the meaning of a, b in calls to my_callback(), see the
2293 * documentation of the function that calls the callback.
2294 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2295 * my_callback should return 1 if it wants BN_is_prime_ex()
2296 * to continue, or 0 to stop.
2301 *) Change the ZLIB compression method to be stateful, and make it
2302 available to TLS with the number defined in
2303 draft-ietf-tls-compression-04.txt.
2306 *) Add the ASN.1 structures and functions for CertificatePair, which
2307 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2309 CertificatePair ::= SEQUENCE {
2310 forward [0] Certificate OPTIONAL,
2311 reverse [1] Certificate OPTIONAL,
2312 -- at least one of the pair shall be present -- }
2314 Also implement the PEM functions to read and write certificate
2315 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2317 This needed to be defined, mostly for the sake of the LDAP
2318 attribute crossCertificatePair, but may prove useful elsewhere as
2322 *) Make it possible to inhibit symlinking of shared libraries in
2323 Makefile.shared, for Cygwin's sake.
2326 *) Extend the BIGNUM API by creating a function
2327 void BN_set_negative(BIGNUM *a, int neg);
2328 and a macro that behave like
2329 int BN_is_negative(const BIGNUM *a);
2331 to avoid the need to access 'a->neg' directly in applications.
2334 *) Implement fast modular reduction for pseudo-Mersenne primes
2335 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2336 EC_GROUP_new_curve_GFp() will now automatically use this
2338 [Nils Larsch <nla@trustcenter.de>]
2340 *) Add new lock type (CRYPTO_LOCK_BN).
2343 *) Change the ENGINE framework to automatically load engines
2344 dynamically from specific directories unless they could be
2345 found to already be built in or loaded. Move all the
2346 current engines except for the cryptodev one to a new
2348 The engines in engines/ are built as shared libraries if
2349 the "shared" options was given to ./Configure or ./config.
2350 Otherwise, they are inserted in libcrypto.a.
2351 /usr/local/ssl/engines is the default directory for dynamic
2352 engines, but that can be overriden at configure time through
2353 the usual use of --prefix and/or --openssldir, and at run
2354 time with the environment variable OPENSSL_ENGINES.
2355 [Geoff Thorpe and Richard Levitte]
2357 *) Add Makefile.shared, a helper makefile to build shared
2358 libraries. Addapt Makefile.org.
2361 *) Add version info to Win32 DLLs.
2362 [Peter 'Luna' Runestig" <peter@runestig.com>]
2364 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2365 can be added using this API to created arbitrary PKCS#12
2366 files while avoiding the low level API.
2368 New options to PKCS12_create(), key or cert can be NULL and
2369 will then be omitted from the output file. The encryption
2370 algorithm NIDs can be set to -1 for no encryption, the mac
2371 iteration count can be set to 0 to omit the mac.
2373 Enhance pkcs12 utility by making the -nokeys and -nocerts
2374 options work when creating a PKCS#12 file. New option -nomac
2375 to omit the mac, NONE can be set for an encryption algorithm.
2376 New code is modified to use the enhanced PKCS12_create()
2377 instead of the low level API.
2380 *) Extend ASN1 encoder to support indefinite length constructed
2381 encoding. This can output sequences tags and octet strings in
2382 this form. Modify pk7_asn1.c to support indefinite length
2383 encoding. This is experimental and needs additional code to
2384 be useful, such as an ASN1 bio and some enhanced streaming
2387 Extend template encode functionality so that tagging is passed
2388 down to the template encoder.
2391 *) Let 'openssl req' fail if an argument to '-newkey' is not
2392 recognized instead of using RSA as a default.
2395 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2396 As these are not official, they are not included in "ALL";
2397 the "ECCdraft" ciphersuite group alias can be used to select them.
2398 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2400 *) Add ECDH engine support.
2401 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2403 *) Add ECDH in new directory crypto/ecdh/.
2404 [Douglas Stebila (Sun Microsystems Laboratories)]
2406 *) Let BN_rand_range() abort with an error after 100 iterations
2407 without success (which indicates a broken PRNG).
2410 *) Change BN_mod_sqrt() so that it verifies that the input value
2411 is really the square of the return value. (Previously,
2412 BN_mod_sqrt would show GIGO behaviour.)
2415 *) Add named elliptic curves over binary fields from X9.62, SECG,
2416 and WAP/WTLS; add OIDs that were still missing.
2418 [Sheueling Chang Shantz and Douglas Stebila
2419 (Sun Microsystems Laboratories)]
2421 *) Extend the EC library for elliptic curves over binary fields
2422 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2425 EC_GF2m_simple_method
2429 EC_GROUP_new_curve_GF2m
2430 EC_GROUP_set_curve_GF2m
2431 EC_GROUP_get_curve_GF2m
2432 EC_POINT_set_affine_coordinates_GF2m
2433 EC_POINT_get_affine_coordinates_GF2m
2434 EC_POINT_set_compressed_coordinates_GF2m
2436 Point compression for binary fields is disabled by default for
2437 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2440 As binary polynomials are represented as BIGNUMs, various members
2441 of the EC_GROUP and EC_POINT data structures can be shared
2442 between the implementations for prime fields and binary fields;
2443 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2444 are essentially identical to their ..._GFp counterparts.
2445 (For simplicity, the '..._GFp' prefix has been dropped from
2446 various internal method names.)
2448 An internal 'field_div' method (similar to 'field_mul' and
2449 'field_sqr') has been added; this is used only for binary fields.
2451 [Sheueling Chang Shantz and Douglas Stebila
2452 (Sun Microsystems Laboratories)]
2454 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2455 through methods ('mul', 'precompute_mult').
2457 The generic implementations (now internally called 'ec_wNAF_mul'
2458 and 'ec_wNAF_precomputed_mult') remain the default if these
2459 methods are undefined.
2461 [Sheueling Chang Shantz and Douglas Stebila
2462 (Sun Microsystems Laboratories)]
2464 *) New function EC_GROUP_get_degree, which is defined through
2465 EC_METHOD. For curves over prime fields, this returns the bit
2466 length of the modulus.
2468 [Sheueling Chang Shantz and Douglas Stebila
2469 (Sun Microsystems Laboratories)]
2471 *) New functions EC_GROUP_dup, EC_POINT_dup.
2472 (These simply call ..._new and ..._copy).
2474 [Sheueling Chang Shantz and Douglas Stebila
2475 (Sun Microsystems Laboratories)]
2477 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2478 Polynomials are represented as BIGNUMs (where the sign bit is not
2479 used) in the following functions [macros]:
2482 BN_GF2m_sub [= BN_GF2m_add]
2483 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2484 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2485 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2487 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2488 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2489 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2490 BN_GF2m_cmp [= BN_ucmp]
2492 (Note that only the 'mod' functions are actually for fields GF(2^m).
2493 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2495 For some functions, an the irreducible polynomial defining a
2496 field can be given as an 'unsigned int[]' with strictly
2497 decreasing elements giving the indices of those bits that are set;
2498 i.e., p[] represents the polynomial
2499 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2501 p[0] > p[1] > ... > p[k] = 0.
2502 This applies to the following functions:
2507 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2508 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2510 BN_GF2m_mod_sqrt_arr
2511 BN_GF2m_mod_solve_quad_arr
2515 Conversion can be performed by the following functions:
2520 bntest.c has additional tests for binary polynomial arithmetic.
2522 Two implementations for BN_GF2m_mod_div() are available.
2523 The default algorithm simply uses BN_GF2m_mod_inv() and
2524 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2525 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2526 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2528 [Sheueling Chang Shantz and Douglas Stebila
2529 (Sun Microsystems Laboratories)]
2531 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2532 functionality is disabled at compile-time.
2533 [Douglas Stebila <douglas.stebila@sun.com>]
2535 *) Change default behaviour of 'openssl asn1parse' so that more
2536 information is visible when viewing, e.g., a certificate:
2538 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2539 mode the content of non-printable OCTET STRINGs is output in a
2540 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2541 avoid the appearance of a printable string.
2542 [Nils Larsch <nla@trustcenter.de>]
2544 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2546 EC_GROUP_set_asn1_flag()
2547 EC_GROUP_get_asn1_flag()
2548 EC_GROUP_set_point_conversion_form()
2549 EC_GROUP_get_point_conversion_form()
2550 These control ASN1 encoding details:
2551 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2552 has been set to OPENSSL_EC_NAMED_CURVE.
2553 - Points are encoded in uncompressed form by default; options for
2554 asn1_for are as for point2oct, namely
2555 POINT_CONVERSION_COMPRESSED
2556 POINT_CONVERSION_UNCOMPRESSED
2557 POINT_CONVERSION_HYBRID
2559 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2562 EC_GROUP_get0_seed()
2563 EC_GROUP_get_seed_len()
2564 This is used only for ASN1 purposes (so far).
2565 [Nils Larsch <nla@trustcenter.de>]
2567 *) Add 'field_type' member to EC_METHOD, which holds the NID
2568 of the appropriate field type OID. The new function
2569 EC_METHOD_get_field_type() returns this value.
2570 [Nils Larsch <nla@trustcenter.de>]
2575 EC_POINT_point2hex()
2576 EC_POINT_hex2point()
2577 providing useful interfaces to EC_POINT_point2oct() and
2578 EC_POINT_oct2point().
2579 [Nils Larsch <nla@trustcenter.de>]
2581 *) Change internals of the EC library so that the functions
2582 EC_GROUP_set_generator()
2583 EC_GROUP_get_generator()
2584 EC_GROUP_get_order()
2585 EC_GROUP_get_cofactor()
2586 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2587 to methods, which would lead to unnecessary code duplication when
2588 adding different types of curves.
2589 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2591 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2592 arithmetic, and such that modified wNAFs are generated
2593 (which avoid length expansion in many cases).
2596 *) Add a function EC_GROUP_check_discriminant() (defined via
2597 EC_METHOD) that verifies that the curve discriminant is non-zero.
2599 Add a function EC_GROUP_check() that makes some sanity tests
2600 on a EC_GROUP, its generator and order. This includes
2601 EC_GROUP_check_discriminant().
2602 [Nils Larsch <nla@trustcenter.de>]
2604 *) Add ECDSA in new directory crypto/ecdsa/.
2606 Add applications 'openssl ecparam' and 'openssl ecdsa'
2607 (these are based on 'openssl dsaparam' and 'openssl dsa').
2609 ECDSA support is also included in various other files across the
2610 library. Most notably,
2611 - 'openssl req' now has a '-newkey ecdsa:file' option;
2612 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2613 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2614 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2615 them suitable for ECDSA where domain parameters must be
2616 extracted before the specific public key;
2617 - ECDSA engine support has been added.
2618 [Nils Larsch <nla@trustcenter.de>]
2620 *) Include some named elliptic curves, and add OIDs from X9.62,
2621 SECG, and WAP/WTLS. Each curve can be obtained from the new
2623 EC_GROUP_new_by_curve_name(),
2624 and the list of available named curves can be obtained with
2625 EC_get_builtin_curves().
2626 Also add a 'curve_name' member to EC_GROUP objects, which can be
2628 EC_GROUP_set_curve_name()
2629 EC_GROUP_get_curve_name()
2630 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2632 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2633 was actually never needed) and in BN_mul(). The removal in BN_mul()
2634 required a small change in bn_mul_part_recursive() and the addition
2635 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2636 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2637 bn_sub_words() and bn_add_words() except they take arrays with
2641 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2643 *) Cleanse PEM buffers before freeing them since they may contain
2645 [Benjamin Bennett <ben@psc.edu>]
2647 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2648 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2649 authentication-only ciphersuites.
2652 *) Since AES128 and AES256 share a single mask bit in the logic of
2653 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2654 kludge to work properly if AES128 is available and AES256 isn't.
2657 *) Expand security boundary to match 1.1.1 module.
2660 *) Remove redundant features: hash file source, editing of test vectors
2661 modify fipsld to use external fips_premain.c signature.
2664 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2665 run algorithm test programs.
2668 *) Make algorithm test programs more tolerant of whitespace.
2671 *) Have SSL/TLS server implementation tolerate "mismatched" record
2672 protocol version while receiving ClientHello even if the
2673 ClientHello is fragmented. (The server can't insist on the
2674 particular protocol version it has chosen before the ServerHello
2675 message has informed the client about his choice.)
2678 *) Load error codes if they are not already present instead of using a
2679 static variable. This allows them to be cleanly unloaded and reloaded.
2682 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2684 *) Introduce limits to prevent malicious keys being able to
2685 cause a denial of service. (CVE-2006-2940)
2686 [Steve Henson, Bodo Moeller]
2688 *) Fix ASN.1 parsing of certain invalid structures that can result
2689 in a denial of service. (CVE-2006-2937) [Steve Henson]
2691 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2692 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2694 *) Fix SSL client code which could crash if connecting to a
2695 malicious SSLv2 server. (CVE-2006-4343)
2696 [Tavis Ormandy and Will Drewry, Google Security Team]
2698 *) Change ciphersuite string processing so that an explicit
2699 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
2700 will no longer include "AES128-SHA"), and any other similar
2701 ciphersuite (same bitmap) from *other* protocol versions (so that
2702 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
2703 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
2704 changes from 0.9.8b and 0.9.8d.
2707 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
2709 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2710 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2712 *) Change the Unix randomness entropy gathering to use poll() when
2713 possible instead of select(), since the latter has some
2714 undesirable limitations.
2715 [Darryl Miles via Richard Levitte and Bodo Moeller]
2717 *) Disable rogue ciphersuites:
2719 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2720 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2721 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2723 The latter two were purportedly from
2724 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2727 Also deactive the remaining ciphersuites from
2728 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2729 unofficial, and the ID has long expired.
2732 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2733 dual-core machines) and other potential thread-safety issues.
2736 Changes between 0.9.7i and 0.9.7j [04 May 2006]
2738 *) Adapt fipsld and the build system to link against the validated FIPS
2739 module in FIPS mode.
2742 *) Fixes for VC++ 2005 build under Windows.
2745 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
2746 from a Windows bash shell such as MSYS. It is autodetected from the
2747 "config" script when run from a VC++ environment. Modify standard VC++
2748 build to use fipscanister.o from the GNU make build.
2751 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
2753 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
2754 The value now differs depending on if you build for FIPS or not.
2755 BEWARE! A program linked with a shared FIPSed libcrypto can't be
2756 safely run with a non-FIPSed libcrypto, as it may crash because of
2757 the difference induced by this change.
2760 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
2762 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2763 (part of SSL_OP_ALL). This option used to disable the
2764 countermeasure against man-in-the-middle protocol-version
2765 rollback in the SSL 2.0 server implementation, which is a bad
2766 idea. (CVE-2005-2969)
2768 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2769 for Information Security, National Institute of Advanced Industrial
2770 Science and Technology [AIST], Japan)]
2772 *) Minimal support for X9.31 signatures and PSS padding modes. This is
2773 mainly for FIPS compliance and not fully integrated at this stage.
2776 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
2777 the exponentiation using a fixed-length exponent. (Otherwise,
2778 the information leaked through timing could expose the secret key
2779 after many signatures; cf. Bleichenbacher's attack on DSA with
2783 *) Make a new fixed-window mod_exp implementation the default for
2784 RSA, DSA, and DH private-key operations so that the sequence of
2785 squares and multiplies and the memory access pattern are
2786 independent of the particular secret key. This will mitigate
2787 cache-timing and potential related attacks.
2789 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
2790 and this is automatically used by BN_mod_exp_mont() if the new flag
2791 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
2792 will use this BN flag for private exponents unless the flag
2793 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
2794 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
2796 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
2798 *) Change the client implementation for SSLv23_method() and
2799 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
2800 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
2801 (Previously, the SSL 2.0 backwards compatible Client Hello
2802 message format would be used even with SSL_OP_NO_SSLv2.)
2805 *) Add support for smime-type MIME parameter in S/MIME messages which some
2809 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
2810 a threadsafe manner. Modify rsa code to use new function and add calls
2811 to dsa and dh code (which had race conditions before).
2814 *) Include the fixed error library code in the C error file definitions
2815 instead of fixing them up at runtime. This keeps the error code
2816 structures constant.
2819 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
2821 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
2824 *) Fixes for newer kerberos headers. NB: the casts are needed because
2825 the 'length' field is signed on one version and unsigned on another
2826 with no (?) obvious way to tell the difference, without these VC++
2827 complains. Also the "definition" of FAR (blank) is no longer included
2828 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
2829 some needed definitions.
2832 *) Undo Cygwin change.
2835 *) Added support for proxy certificates according to RFC 3820.
2836 Because they may be a security thread to unaware applications,
2837 they must be explicitely allowed in run-time. See
2838 docs/HOWTO/proxy_certificates.txt for further information.
2841 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
2843 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
2844 server and client random values. Previously
2845 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
2846 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
2848 This change has negligible security impact because:
2850 1. Server and client random values still have 24 bytes of pseudo random
2853 2. Server and client random values are sent in the clear in the initial
2856 3. The master secret is derived using the premaster secret (48 bytes in
2857 size for static RSA ciphersuites) as well as client server and random
2860 The OpenSSL team would like to thank the UK NISCC for bringing this issue
2863 [Stephen Henson, reported by UK NISCC]
2865 *) Use Windows randomness collection on Cygwin.
2868 *) Fix hang in EGD/PRNGD query when communication socket is closed
2869 prematurely by EGD/PRNGD.
2870 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
2872 *) Prompt for pass phrases when appropriate for PKCS12 input format.
2875 *) Back-port of selected performance improvements from development
2876 branch, as well as improved support for PowerPC platforms.
2879 *) Add lots of checks for memory allocation failure, error codes to indicate
2880 failure and freeing up memory if a failure occurs.
2881 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
2883 *) Add new -passin argument to dgst.
2886 *) Perform some character comparisons of different types in X509_NAME_cmp:
2887 this is needed for some certificates that reencode DNs into UTF8Strings
2888 (in violation of RFC3280) and can't or wont issue name rollover
2892 *) Make an explicit check during certificate validation to see that
2893 the CA setting in each certificate on the chain is correct. As a
2894 side effect always do the following basic checks on extensions,
2895 not just when there's an associated purpose to the check:
2897 - if there is an unhandled critical extension (unless the user
2898 has chosen to ignore this fault)
2899 - if the path length has been exceeded (if one is set at all)
2900 - that certain extensions fit the associated purpose (if one has
2904 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
2906 *) Avoid a race condition when CRLs are checked in a multi threaded
2907 environment. This would happen due to the reordering of the revoked
2908 entries during signature checking and serial number lookup. Now the
2909 encoding is cached and the serial number sort performed under a lock.
2910 Add new STACK function sk_is_sorted().
2913 *) Add Delta CRL to the extension code.
2916 *) Various fixes to s3_pkt.c so alerts are sent properly.
2917 [David Holmes <d.holmes@f5.com>]
2919 *) Reduce the chances of duplicate issuer name and serial numbers (in
2920 violation of RFC3280) using the OpenSSL certificate creation utilities.
2921 This is done by creating a random 64 bit value for the initial serial
2922 number when a serial number file is created or when a self signed
2923 certificate is created using 'openssl req -x509'. The initial serial
2924 number file is created using 'openssl x509 -next_serial' in CA.pl
2925 rather than being initialized to 1.
2928 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
2930 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
2931 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
2932 [Joe Orton, Steve Henson]
2934 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
2936 [Joe Orton, Steve Henson]
2938 *) Make it possible to have multiple active certificates with the same
2939 subject in the CA index file. This is done only if the keyword
2940 'unique_subject' is set to 'no' in the main CA section (default
2941 if 'CA_default') of the configuration file. The value is saved
2942 with the database itself in a separate index attribute file,
2943 named like the index file with '.attr' appended to the name.
2946 *) X509 verify fixes. Disable broken certificate workarounds when
2947 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
2948 keyUsage extension present. Don't accept CRLs with unhandled critical
2949 extensions: since verify currently doesn't process CRL extensions this
2950 rejects a CRL with *any* critical extensions. Add new verify error codes
2954 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
2955 A clarification of RFC2560 will require the use of OCTET STRINGs and
2956 some implementations cannot handle the current raw format. Since OpenSSL
2957 copies and compares OCSP nonces as opaque blobs without any attempt at
2958 parsing them this should not create any compatibility issues.
2961 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
2962 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
2963 this HMAC (and other) operations are several times slower than OpenSSL
2967 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
2968 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
2970 *) Use the correct content when signing type "other".
2973 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
2975 *) Fix various bugs revealed by running the NISCC test suite:
2977 Stop out of bounds reads in the ASN1 code when presented with
2978 invalid tags (CVE-2003-0543 and CVE-2003-0544).
2980 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
2982 If verify callback ignores invalid public key errors don't try to check
2983 certificate signature with the NULL public key.
2987 *) New -ignore_err option in ocsp application to stop the server
2988 exiting on the first error in a request.
2991 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
2992 if the server requested one: as stated in TLS 1.0 and SSL 3.0
2996 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
2997 extra data after the compression methods not only for TLS 1.0
2998 but also for SSL 3.0 (as required by the specification).
2999 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3001 *) Change X509_certificate_type() to mark the key as exported/exportable
3002 when it's 512 *bits* long, not 512 bytes.
3005 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3006 blocks during encryption.
3009 *) Various fixes to base64 BIO and non blocking I/O. On write
3010 flushes were not handled properly if the BIO retried. On read
3011 data was not being buffered properly and had various logic bugs.
3012 This also affects blocking I/O when the data being decoded is a
3016 *) Various S/MIME bugfixes and compatibility changes:
3017 output correct application/pkcs7 MIME type if
3018 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3019 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3020 of files as .eml work). Correctly handle very long lines in MIME
3024 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3026 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3027 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3028 a protocol version number mismatch like a decryption error
3029 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3032 *) Turn on RSA blinding by default in the default implementation
3033 to avoid a timing attack. Applications that don't want it can call
3034 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3035 They would be ill-advised to do so in most cases.
3036 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3038 *) Change RSA blinding code so that it works when the PRNG is not
3039 seeded (in this case, the secret RSA exponent is abused as
3040 an unpredictable seed -- if it is not unpredictable, there
3041 is no point in blinding anyway). Make RSA blinding thread-safe
3042 by remembering the creator's thread ID in rsa->blinding and
3043 having all other threads use local one-time blinding factors
3044 (this requires more computation than sharing rsa->blinding, but
3045 avoids excessive locking; and if an RSA object is not shared
3046 between threads, blinding will still be very fast).
3049 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3050 ENGINE as defaults for all supported algorithms irrespective of
3051 the 'flags' parameter. 'flags' is now honoured, so applications
3052 should make sure they are passing it correctly.
3055 *) Target "mingw" now allows native Windows code to be generated in
3056 the Cygwin environment as well as with the MinGW compiler.
3059 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3061 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3062 via timing by performing a MAC computation even if incorrrect
3063 block cipher padding has been found. This is a countermeasure
3064 against active attacks where the attacker has to distinguish
3065 between bad padding and a MAC verification error. (CVE-2003-0078)
3067 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3068 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3069 Martin Vuagnoux (EPFL, Ilion)]
3071 *) Make the no-err option work as intended. The intention with no-err
3072 is not to have the whole error stack handling routines removed from
3073 libcrypto, it's only intended to remove all the function name and
3074 reason texts, thereby removing some of the footprint that may not
3075 be interesting if those errors aren't displayed anyway.
3077 NOTE: it's still possible for any application or module to have it's
3078 own set of error texts inserted. The routines are there, just not
3079 used by default when no-err is given.
3082 *) Add support for FreeBSD on IA64.
3083 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3085 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3086 Kerberos function mit_des_cbc_cksum(). Before this change,
3087 the value returned by DES_cbc_cksum() was like the one from
3088 mit_des_cbc_cksum(), except the bytes were swapped.
3089 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3091 *) Allow an application to disable the automatic SSL chain building.
3092 Before this a rather primitive chain build was always performed in
3093 ssl3_output_cert_chain(): an application had no way to send the
3094 correct chain if the automatic operation produced an incorrect result.
3096 Now the chain builder is disabled if either:
3098 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3100 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3102 The reasoning behind this is that an application would not want the
3103 auto chain building to take place if extra chain certificates are
3104 present and it might also want a means of sending no additional
3105 certificates (for example the chain has two certificates and the
3109 *) Add the possibility to build without the ENGINE framework.
3110 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3112 *) Under Win32 gmtime() can return NULL: check return value in
3113 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3116 *) DSA routines: under certain error conditions uninitialized BN objects
3117 could be freed. Solution: make sure initialization is performed early
3118 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3119 Nils Larsch <nla@trustcenter.de> via PR#459)
3122 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3123 checked on reconnect on the client side, therefore session resumption
3124 could still fail with a "ssl session id is different" error. This
3125 behaviour is masked when SSL_OP_ALL is used due to
3126 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3127 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3128 followup to PR #377.
3131 *) IA-32 assembler support enhancements: unified ELF targets, support
3132 for SCO/Caldera platforms, fix for Cygwin shared build.
3135 *) Add support for FreeBSD on sparc64. As a consequence, support for
3136 FreeBSD on non-x86 processors is separate from x86 processors on
3137 the config script, much like the NetBSD support.
3138 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3140 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3142 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3145 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3146 code (06) was taken as the first octet of the session ID and the last
3147 octet was ignored consequently. As a result SSLv2 client side session
3148 caching could not have worked due to the session ID mismatch between
3150 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3154 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3155 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3159 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3160 seems that in spite of existing for more than a year, many application
3161 author have done nothing to provide the necessary callbacks, which
3162 means that this particular engine will not work properly anywhere.
3163 This is a very unfortunate situation which forces us, in the name
3164 of usability, to give the hw_ncipher.c a static lock, which is part
3166 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3167 appear in 0.9.8 or later. We EXPECT application authors to have
3168 dealt properly with this when 0.9.8 is released (unless we actually
3169 make such changes in the libcrypto locking code that changes will
3170 have to be made anyway).
3173 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3174 octets have been read, EOF or an error occurs. Without this change
3175 some truncated ASN1 structures will not produce an error.
3178 *) Disable Heimdal support, since it hasn't been fully implemented.
3179 Still give the possibility to force the use of Heimdal, but with
3180 warnings and a request that patches get sent to openssl-dev.
3183 *) Add the VC-CE target, introduce the WINCE sysname, and add
3184 INSTALL.WCE and appropriate conditionals to make it build.
3185 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3187 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3188 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3189 edit numbers of the version.
3190 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3192 *) Introduce safe string copy and catenation functions
3193 (BUF_strlcpy() and BUF_strlcat()).
3194 [Ben Laurie (CHATS) and Richard Levitte]
3196 *) Avoid using fixed-size buffers for one-line DNs.
3197 [Ben Laurie (CHATS)]
3199 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3200 resizing buffers containing secrets, and use where appropriate.
3201 [Ben Laurie (CHATS)]
3203 *) Avoid using fixed size buffers for configuration file location.
3204 [Ben Laurie (CHATS)]
3206 *) Avoid filename truncation for various CA files.
3207 [Ben Laurie (CHATS)]
3209 *) Use sizeof in preference to magic numbers.
3210 [Ben Laurie (CHATS)]
3212 *) Avoid filename truncation in cert requests.
3213 [Ben Laurie (CHATS)]
3215 *) Add assertions to check for (supposedly impossible) buffer
3217 [Ben Laurie (CHATS)]
3219 *) Don't cache truncated DNS entries in the local cache (this could
3220 potentially lead to a spoofing attack).
3221 [Ben Laurie (CHATS)]
3223 *) Fix various buffers to be large enough for hex/decimal
3224 representations in a platform independent manner.
3225 [Ben Laurie (CHATS)]
3227 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3228 resizing buffers containing secrets, and use where appropriate.
3229 [Ben Laurie (CHATS)]
3231 *) Add BIO_indent() to avoid much slightly worrying code to do
3233 [Ben Laurie (CHATS)]
3235 *) Convert sprintf()/BIO_puts() to BIO_printf().
3236 [Ben Laurie (CHATS)]
3238 *) buffer_gets() could terminate with the buffer only half
3240 [Ben Laurie (CHATS)]
3242 *) Add assertions to prevent user-supplied crypto functions from
3243 overflowing internal buffers by having large block sizes, etc.
3244 [Ben Laurie (CHATS)]
3246 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3248 [Ben Laurie (CHATS)]
3250 *) Eliminate unused copy of key in RC4.
3251 [Ben Laurie (CHATS)]
3253 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3254 [Ben Laurie (CHATS)]
3256 *) Fix off-by-one error in EGD path.
3257 [Ben Laurie (CHATS)]
3259 *) If RANDFILE path is too long, ignore instead of truncating.
3260 [Ben Laurie (CHATS)]
3262 *) Eliminate unused and incorrectly sized X.509 structure
3264 [Ben Laurie (CHATS)]
3266 *) Eliminate unused and dangerous function knumber().
3267 [Ben Laurie (CHATS)]
3269 *) Eliminate unused and dangerous structure, KSSL_ERR.
3270 [Ben Laurie (CHATS)]
3272 *) Protect against overlong session ID context length in an encoded
3273 session object. Since these are local, this does not appear to be
3275 [Ben Laurie (CHATS)]
3277 *) Change from security patch (see 0.9.6e below) that did not affect
3278 the 0.9.6 release series:
3280 Remote buffer overflow in SSL3 protocol - an attacker could
3281 supply an oversized master key in Kerberos-enabled versions.
3283 [Ben Laurie (CHATS)]
3285 *) Change the SSL kerb5 codes to match RFC 2712.
3288 *) Make -nameopt work fully for req and add -reqopt switch.
3289 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3291 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3292 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3294 *) Make sure tests can be performed even if the corresponding algorithms
3295 have been removed entirely. This was also the last step to make
3296 OpenSSL compilable with DJGPP under all reasonable conditions.
3297 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3299 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3300 to allow version independent disabling of normally unselected ciphers,
3301 which may be activated as a side-effect of selecting a single cipher.
3303 (E.g., cipher list string "RSA" enables ciphersuites that are left
3304 out of "ALL" because they do not provide symmetric encryption.
3305 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3306 [Lutz Jaenicke, Bodo Moeller]
3308 *) Add appropriate support for separate platform-dependent build
3309 directories. The recommended way to make a platform-dependent
3310 build directory is the following (tested on Linux), maybe with
3313 # Place yourself outside of the OpenSSL source tree. In
3314 # this example, the environment variable OPENSSL_SOURCE
3315 # is assumed to contain the absolute OpenSSL source directory.
3316 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3317 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3318 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3319 mkdir -p `dirname $F`
3320 ln -s $OPENSSL_SOURCE/$F $F
3323 To be absolutely sure not to disturb the source tree, a "make clean"
3324 is a good thing. If it isn't successfull, don't worry about it,
3325 it probably means the source directory is very clean.
3328 *) Make sure any ENGINE control commands make local copies of string
3329 pointers passed to them whenever necessary. Otherwise it is possible
3330 the caller may have overwritten (or deallocated) the original string
3331 data when a later ENGINE operation tries to use the stored values.
3332 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3334 *) Improve diagnostics in file reading and command-line digests.
3335 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3337 *) Add AES modes CFB and OFB to the object database. Correct an
3338 error in AES-CFB decryption.
3341 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3342 allows existing EVP_CIPHER_CTX structures to be reused after
3343 calling EVP_*Final(). This behaviour is used by encryption
3344 BIOs and some applications. This has the side effect that
3345 applications must explicitly clean up cipher contexts with
3346 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3349 *) Check the values of dna and dnb in bn_mul_recursive before calling
3350 bn_mul_comba (a non zero value means the a or b arrays do not contain
3351 n2 elements) and fallback to bn_mul_normal if either is not zero.
3354 *) Fix escaping of non-ASCII characters when using the -subj option
3355 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3358 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3359 form for "surname", serialNumber has no short form.
3360 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3361 therefore remove "mail" short name for "internet 7".
3362 The OID for unique identifiers in X509 certificates is
3363 x500UniqueIdentifier, not uniqueIdentifier.
3364 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3367 *) Add an "init" command to the ENGINE config module and auto initialize
3368 ENGINEs. Without any "init" command the ENGINE will be initialized
3369 after all ctrl commands have been executed on it. If init=1 the
3370 ENGINE is initailized at that point (ctrls before that point are run
3371 on the uninitialized ENGINE and after on the initialized one). If
3372 init=0 then the ENGINE will not be iniatialized at all.
3375 *) Fix the 'app_verify_callback' interface so that the user-defined
3376 argument is actually passed to the callback: In the
3377 SSL_CTX_set_cert_verify_callback() prototype, the callback
3378 declaration has been changed from
3381 int (*cb)(X509_STORE_CTX *,void *);
3382 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3383 i=s->ctx->app_verify_callback(&ctx)
3384 has been changed into
3385 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3387 To update applications using SSL_CTX_set_cert_verify_callback(),
3388 a dummy argument can be added to their callback functions.
3389 [D. K. Smetters <smetters@parc.xerox.com>]
3391 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3392 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3394 *) Add and OPENSSL_LOAD_CONF define which will cause
3395 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3396 This allows older applications to transparently support certain
3397 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3398 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3399 load the config file and OPENSSL_add_all_algorithms_conf() which will
3400 always load it have also been added.
3403 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
3404 Adjust NIDs and EVP layer.
3405 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3407 *) Config modules support in openssl utility.
3409 Most commands now load modules from the config file,
3410 though in a few (such as version) this isn't done
3411 because it couldn't be used for anything.
3413 In the case of ca and req the config file used is
3414 the same as the utility itself: that is the -config
3415 command line option can be used to specify an
3419 *) Move default behaviour from OPENSSL_config(). If appname is NULL
3420 use "openssl_conf" if filename is NULL use default openssl config file.
3423 *) Add an argument to OPENSSL_config() to allow the use of an alternative
3424 config section name. Add a new flag to tolerate a missing config file
3425 and move code to CONF_modules_load_file().
3428 *) Support for crypto accelerator cards from Accelerated Encryption
3429 Processing, www.aep.ie. (Use engine 'aep')
3430 The support was copied from 0.9.6c [engine] and adapted/corrected
3431 to work with the new engine framework.
3432 [AEP Inc. and Richard Levitte]
3434 *) Support for SureWare crypto accelerator cards from Baltimore
3435 Technologies. (Use engine 'sureware')
3436 The support was copied from 0.9.6c [engine] and adapted
3437 to work with the new engine framework.
3440 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
3441 make the newer ENGINE framework commands for the CHIL engine work.
3442 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
3444 *) Make it possible to produce shared libraries on ReliantUNIX.
3445 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
3447 *) Add the configuration target debug-linux-ppro.
3448 Make 'openssl rsa' use the general key loading routines
3449 implemented in apps.c, and make those routines able to
3450 handle the key format FORMAT_NETSCAPE and the variant
3452 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3454 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3455 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3457 *) Add -keyform to rsautl, and document -engine.
3458 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3460 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3461 BIO_R_NO_SUCH_FILE error code rather than the generic
3462 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3465 *) Add new functions
3467 ERR_peek_last_error_line
3468 ERR_peek_last_error_line_data.
3469 These are similar to
3472 ERR_peek_error_line_data,
3473 but report on the latest error recorded rather than the first one
3474 still in the error queue.
3475 [Ben Laurie, Bodo Moeller]
3477 *) default_algorithms option in ENGINE config module. This allows things
3479 default_algorithms = ALL
3480 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3483 *) Prelminary ENGINE config module.
3486 *) New experimental application configuration code.
3489 *) Change the AES code to follow the same name structure as all other
3490 symmetric ciphers, and behave the same way. Move everything to
3491 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3492 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3494 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3495 [Ben Laurie and Theo de Raadt]
3497 *) Add option to output public keys in req command.
3498 [Massimiliano Pala madwolf@openca.org]
3500 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3501 (up to about 10% better than before for P-192 and P-224).
3504 *) New functions/macros
3506 SSL_CTX_set_msg_callback(ctx, cb)
3507 SSL_CTX_set_msg_callback_arg(ctx, arg)
3508 SSL_set_msg_callback(ssl, cb)
3509 SSL_set_msg_callback_arg(ssl, arg)
3511 to request calling a callback function
3513 void cb(int write_p, int version, int content_type,
3514 const void *buf, size_t len, SSL *ssl, void *arg)
3516 whenever a protocol message has been completely received
3517 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3518 protocol version according to which the SSL library interprets
3519 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3520 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3521 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3522 specification (change_cipher_spec(20), alert(21), handshake(22)).
3523 'buf' and 'len' point to the actual message, 'ssl' to the
3524 SSL object, and 'arg' is the application-defined value set by
3525 SSL[_CTX]_set_msg_callback_arg().
3527 'openssl s_client' and 'openssl s_server' have new '-msg' options
3528 to enable a callback that displays all protocol messages.
3531 *) Change the shared library support so shared libraries are built as
3532 soon as the corresponding static library is finished, and thereby get
3533 openssl and the test programs linked against the shared library.
3534 This still only happens when the keyword "shard" has been given to
3535 the configuration scripts.
3537 NOTE: shared library support is still an experimental thing, and
3538 backward binary compatibility is still not guaranteed.
3539 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3541 *) Add support for Subject Information Access extension.
3542 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3544 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3545 additional bytes when new memory had to be allocated, not just
3546 when reusing an existing buffer.
3549 *) New command line and configuration option 'utf8' for the req command.
3550 This allows field values to be specified as UTF8 strings.
3553 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3554 runs for the former and machine-readable output for the latter.
3557 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3558 of the e-mail address in the DN (i.e., it will go into a certificate
3559 extension only). The new configuration file option 'email_in_dn = no'
3560 has the same effect.
3561 [Massimiliano Pala madwolf@openca.org]
3563 *) Change all functions with names starting with des_ to be starting
3564 with DES_ instead. Add wrappers that are compatible with libdes,
3565 but are named _ossl_old_des_*. Finally, add macros that map the
3566 des_* symbols to the corresponding _ossl_old_des_* if libdes
3567 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3568 desired, the des_* symbols will be mapped to DES_*, with one
3571 Since we provide two compatibility mappings, the user needs to
3572 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3573 compatibility is desired. The default (i.e., when that macro
3574 isn't defined) is OpenSSL 0.9.6c compatibility.
3576 There are also macros that enable and disable the support of old
3577 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3578 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3579 are defined, the default will apply: to support the old des routines.
3581 In either case, one must include openssl/des.h to get the correct
3582 definitions. Do not try to just include openssl/des_old.h, that
3585 NOTE: This is a major break of an old API into a new one. Software
3586 authors are encouraged to switch to the DES_ style functions. Some
3587 time in the future, des_old.h and the libdes compatibility functions
3588 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
3589 default), and then completely removed.
3592 *) Test for certificates which contain unsupported critical extensions.
3593 If such a certificate is found during a verify operation it is
3594 rejected by default: this behaviour can be overridden by either
3595 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
3596 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
3597 X509_supported_extension() has also been added which returns 1 if a
3598 particular extension is supported.
3601 *) Modify the behaviour of EVP cipher functions in similar way to digests
3602 to retain compatibility with existing code.
3605 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
3606 compatibility with existing code. In particular the 'ctx' parameter does
3607 not have to be to be initialized before the call to EVP_DigestInit() and
3608 it is tidied up after a call to EVP_DigestFinal(). New function
3609 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
3610 EVP_MD_CTX_copy() changed to not require the destination to be
3611 initialized valid and new function EVP_MD_CTX_copy_ex() added which
3612 requires the destination to be valid.
3614 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
3615 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
3618 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
3619 so that complete 'Handshake' protocol structures are kept in memory
3620 instead of overwriting 'msg_type' and 'length' with 'body' data.
3623 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
3624 [Massimo Santin via Richard Levitte]
3626 *) Major restructuring to the underlying ENGINE code. This includes
3627 reduction of linker bloat, separation of pure "ENGINE" manipulation
3628 (initialisation, etc) from functionality dealing with implementations
3629 of specific crypto iterfaces. This change also introduces integrated
3630 support for symmetric ciphers and digest implementations - so ENGINEs
3631 can now accelerate these by providing EVP_CIPHER and EVP_MD
3632 implementations of their own. This is detailed in crypto/engine/README
3633 as it couldn't be adequately described here. However, there are a few
3634 API changes worth noting - some RSA, DSA, DH, and RAND functions that
3635 were changed in the original introduction of ENGINE code have now
3636 reverted back - the hooking from this code to ENGINE is now a good
3637 deal more passive and at run-time, operations deal directly with
3638 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
3639 dereferencing through an ENGINE pointer any more. Also, the ENGINE
3640 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
3641 they were not being used by the framework as there is no concept of a
3642 BIGNUM_METHOD and they could not be generalised to the new
3643 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
3644 ENGINE_cpy() has been removed as it cannot be consistently defined in
3648 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
3651 *) Change mkdef.pl to sort symbols that get the same entry number,
3652 and make sure the automatically generated functions ERR_load_*
3653 become part of libeay.num as well.
3656 *) New function SSL_renegotiate_pending(). This returns true once
3657 renegotiation has been requested (either SSL_renegotiate() call
3658 or HelloRequest/ClientHello receveived from the peer) and becomes
3659 false once a handshake has been completed.
3660 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
3661 sends a HelloRequest, but does not ensure that a handshake takes
3662 place. SSL_renegotiate_pending() is useful for checking if the
3663 client has followed the request.)
3666 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
3667 By default, clients may request session resumption even during
3668 renegotiation (if session ID contexts permit); with this option,
3669 session resumption is possible only in the first handshake.
3671 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
3672 more bits available for options that should not be part of
3673 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
3676 *) Add some demos for certificate and certificate request creation.
3679 *) Make maximum certificate chain size accepted from the peer application
3680 settable (SSL*_get/set_max_cert_list()), as proposed by
3681 "Douglas E. Engert" <deengert@anl.gov>.
3684 *) Add support for shared libraries for Unixware-7
3685 (Boyd Lynn Gerber <gerberb@zenez.com>).
3688 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
3689 be done prior to destruction. Use this to unload error strings from
3690 ENGINEs that load their own error strings. NB: This adds two new API
3691 functions to "get" and "set" this destroy handler in an ENGINE.
3694 *) Alter all existing ENGINE implementations (except "openssl" and
3695 "openbsd") to dynamically instantiate their own error strings. This
3696 makes them more flexible to be built both as statically-linked ENGINEs
3697 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
3698 Also, add stub code to each that makes building them as self-contained
3699 shared-libraries easier (see README.ENGINE).
3702 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
3703 implementations into applications that are completely implemented in
3704 self-contained shared-libraries. The "dynamic" ENGINE exposes control
3705 commands that can be used to configure what shared-library to load and
3706 to control aspects of the way it is handled. Also, made an update to
3707 the README.ENGINE file that brings its information up-to-date and
3708 provides some information and instructions on the "dynamic" ENGINE
3709 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
3712 *) Make it possible to unload ranges of ERR strings with a new
3713 "ERR_unload_strings" function.
3716 *) Add a copy() function to EVP_MD.
3719 *) Make EVP_MD routines take a context pointer instead of just the
3720 md_data void pointer.
3723 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
3724 that the digest can only process a single chunk of data
3725 (typically because it is provided by a piece of
3726 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
3727 is only going to provide a single chunk of data, and hence the
3728 framework needn't accumulate the data for oneshot drivers.
3731 *) As with "ERR", make it possible to replace the underlying "ex_data"
3732 functions. This change also alters the storage and management of global
3733 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
3734 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
3735 index counters. The API functions that use this state have been changed
3736 to take a "class_index" rather than pointers to the class's local STACK
3737 and counter, and there is now an API function to dynamically create new
3738 classes. This centralisation allows us to (a) plug a lot of the
3739 thread-safety problems that existed, and (b) makes it possible to clean
3740 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
3741 such data would previously have always leaked in application code and
3742 workarounds were in place to make the memory debugging turn a blind eye
3743 to it. Application code that doesn't use this new function will still
3744 leak as before, but their memory debugging output will announce it now
3745 rather than letting it slide.
3747 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
3748 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
3749 has a return value to indicate success or failure.
3752 *) Make it possible to replace the underlying "ERR" functions such that the
3753 global state (2 LHASH tables and 2 locks) is only used by the "default"
3754 implementation. This change also adds two functions to "get" and "set"
3755 the implementation prior to it being automatically set the first time
3756 any other ERR function takes place. Ie. an application can call "get",
3757 pass the return value to a module it has just loaded, and that module
3758 can call its own "set" function using that value. This means the
3759 module's "ERR" operations will use (and modify) the error state in the
3760 application and not in its own statically linked copy of OpenSSL code.
3763 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
3764 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
3765 the operation, and provides a more encapsulated way for external code
3766 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
3767 to use these functions rather than manually incrementing the counts.
3769 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
3772 *) Add EVP test program.
3775 *) Add symmetric cipher support to ENGINE. Expect the API to change!
3778 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
3779 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
3780 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
3781 These allow a CRL to be built without having to access X509_CRL fields
3782 directly. Modify 'ca' application to use new functions.
3785 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
3786 bug workarounds. Rollback attack detection is a security feature.
3787 The problem will only arise on OpenSSL servers when TLSv1 is not
3788 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
3789 Software authors not wanting to support TLSv1 will have special reasons
3790 for their choice and can explicitly enable this option.
3791 [Bodo Moeller, Lutz Jaenicke]
3793 *) Rationalise EVP so it can be extended: don't include a union of
3794 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
3795 (similar to those existing for EVP_CIPHER_CTX).
3800 EVP_MD_CTX_init(&md); /* new function call */
3801 EVP_DigestInit(&md, EVP_sha1());
3802 EVP_DigestUpdate(&md, in, len);
3803 EVP_DigestFinal(&md, out, NULL);
3804 EVP_MD_CTX_cleanup(&md); /* new function call */
3808 *) Make DES key schedule conform to the usual scheme, as well as
3809 correcting its structure. This means that calls to DES functions
3810 now have to pass a pointer to a des_key_schedule instead of a
3811 plain des_key_schedule (which was actually always a pointer
3814 des_key_schedule ks;
3816 des_set_key_checked(..., &ks);
3817 des_ncbc_encrypt(..., &ks, ...);
3819 (Note that a later change renames 'des_...' into 'DES_...'.)
3822 *) Initial reduction of linker bloat: the use of some functions, such as
3823 PEM causes large amounts of unused functions to be linked in due to
3824 poor organisation. For example pem_all.c contains every PEM function
3825 which has a knock on effect of linking in large amounts of (unused)
3826 ASN1 code. Grouping together similar functions and splitting unrelated
3827 functions prevents this.
3830 *) Cleanup of EVP macros.
3833 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
3834 correct _ecb suffix.
3837 *) Add initial OCSP responder support to ocsp application. The
3838 revocation information is handled using the text based index
3839 use by the ca application. The responder can either handle
3840 requests generated internally, supplied in files (for example
3841 via a CGI script) or using an internal minimal server.
3844 *) Add configuration choices to get zlib compression for TLS.
3847 *) Changes to Kerberos SSL for RFC 2712 compliance:
3848 1. Implemented real KerberosWrapper, instead of just using
3849 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
3850 2. Implemented optional authenticator field of KerberosWrapper.
3852 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
3853 and authenticator structs; see crypto/krb5/.
3855 Generalized Kerberos calls to support multiple Kerberos libraries.
3856 [Vern Staats <staatsvr@asc.hpc.mil>,
3857 Jeffrey Altman <jaltman@columbia.edu>
3858 via Richard Levitte]
3860 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
3861 already does with RSA. testdsa.h now has 'priv_key/pub_key'
3862 values for each of the key sizes rather than having just
3863 parameters (and 'speed' generating keys each time).
3866 *) Speed up EVP routines.
3869 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
3870 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
3871 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
3872 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
3874 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
3875 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
3876 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
3879 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
3881 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
3884 *) Added the OS2-EMX target.
3885 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
3887 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
3888 to support NCONF routines in extension code. New function CONF_set_nconf()
3889 to allow functions which take an NCONF to also handle the old LHASH
3890 structure: this means that the old CONF compatible routines can be
3891 retained (in particular wrt extensions) without having to duplicate the
3892 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
3895 *) Enhance the general user interface with mechanisms for inner control
3896 and with possibilities to have yes/no kind of prompts.
3899 *) Change all calls to low level digest routines in the library and
3900 applications to use EVP. Add missing calls to HMAC_cleanup() and
3901 don't assume HMAC_CTX can be copied using memcpy().
3902 [Verdon Walker <VWalker@novell.com>, Steve Henson]
3904 *) Add the possibility to control engines through control names but with
3905 arbitrary arguments instead of just a string.
3906 Change the key loaders to take a UI_METHOD instead of a callback
3907 function pointer. NOTE: this breaks binary compatibility with earlier
3908 versions of OpenSSL [engine].
3909 Adapt the nCipher code for these new conditions and add a card insertion
3913 *) Enhance the general user interface with mechanisms to better support
3914 dialog box interfaces, application-defined prompts, the possibility
3915 to use defaults (for example default passwords from somewhere else)
3916 and interrupts/cancellations.
3919 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
3920 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
3923 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
3924 tidy up some unnecessarily weird code in 'sk_new()').
3925 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
3927 *) Change the key loading routines for ENGINEs to use the same kind
3928 callback (pem_password_cb) as all other routines that need this
3932 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
3933 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
3934 than this minimum value is recommended.
3937 *) New random seeder for OpenVMS, using the system process statistics
3938 that are easily reachable.
3941 *) Windows apparently can't transparently handle global
3942 variables defined in DLLs. Initialisations such as:
3944 const ASN1_ITEM *it = &ASN1_INTEGER_it;
3946 wont compile. This is used by the any applications that need to
3947 declare their own ASN1 modules. This was fixed by adding the option
3948 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
3949 needed for static libraries under Win32.
3952 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
3953 setting of purpose and trust fields. New X509_STORE trust and
3954 purpose functions and tidy up setting in other SSL functions.
3957 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
3958 structure. These are inherited by X509_STORE_CTX when it is
3959 initialised. This allows various defaults to be set in the
3960 X509_STORE structure (such as flags for CRL checking and custom
3961 purpose or trust settings) for functions which only use X509_STORE_CTX
3962 internally such as S/MIME.
3964 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
3965 trust settings if they are not set in X509_STORE. This allows X509_STORE
3966 purposes and trust (in S/MIME for example) to override any set by default.
3968 Add command line options for CRL checking to smime, s_client and s_server
3972 *) Initial CRL based revocation checking. If the CRL checking flag(s)
3973 are set then the CRL is looked up in the X509_STORE structure and
3974 its validity and signature checked, then if the certificate is found
3975 in the CRL the verify fails with a revoked error.
3977 Various new CRL related callbacks added to X509_STORE_CTX structure.
3979 Command line options added to 'verify' application to support this.
3981 This needs some additional work, such as being able to handle multiple
3982 CRLs with different times, extension based lookup (rather than just
3983 by subject name) and ultimately more complete V2 CRL extension
3987 *) Add a general user interface API (crypto/ui/). This is designed
3988 to replace things like des_read_password and friends (backward
3989 compatibility functions using this new API are provided).
3990 The purpose is to remove prompting functions from the DES code
3991 section as well as provide for prompting through dialog boxes in
3992 a window system and the like.
3995 *) Add "ex_data" support to ENGINE so implementations can add state at a
3996 per-structure level rather than having to store it globally.
3999 *) Make it possible for ENGINE structures to be copied when retrieved by
4000 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
4001 This causes the "original" ENGINE structure to act like a template,
4002 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
4003 operational state can be localised to each ENGINE structure, despite the
4004 fact they all share the same "methods". New ENGINE structures returned in
4005 this case have no functional references and the return value is the single
4006 structural reference. This matches the single structural reference returned
4007 by ENGINE_by_id() normally, when it is incremented on the pre-existing
4011 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
4012 needs to match any other type at all we need to manually clear the
4016 *) Changes to the "openssl engine" utility to include;
4017 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
4018 about an ENGINE's available control commands.
4019 - executing control commands from command line arguments using the
4020 '-pre' and '-post' switches. '-post' is only used if '-t' is
4021 specified and the ENGINE is successfully initialised. The syntax for
4022 the individual commands are colon-separated, for example;
4023 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
4026 *) New dynamic control command support for ENGINEs. ENGINEs can now
4027 declare their own commands (numbers), names (strings), descriptions,
4028 and input types for run-time discovery by calling applications. A
4029 subset of these commands are implicitly classed as "executable"
4030 depending on their input type, and only these can be invoked through
4031 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
4032 can be based on user input, config files, etc). The distinction is
4033 that "executable" commands cannot return anything other than a boolean
4034 result and can only support numeric or string input, whereas some
4035 discoverable commands may only be for direct use through
4036 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
4037 pointers, or other custom uses. The "executable" commands are to
4038 support parameterisations of ENGINE behaviour that can be
4039 unambiguously defined by ENGINEs and used consistently across any
4040 OpenSSL-based application. Commands have been added to all the
4041 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
4042 control over shared-library paths without source code alterations.
4045 *) Changed all ENGINE implementations to dynamically allocate their
4046 ENGINEs rather than declaring them statically. Apart from this being
4047 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
4048 this also allows the implementations to compile without using the
4049 internal engine_int.h header.
4052 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
4053 'const' value. Any code that should be able to modify a RAND_METHOD
4054 should already have non-const pointers to it (ie. they should only
4055 modify their own ones).
4058 *) Made a variety of little tweaks to the ENGINE code.
4059 - "atalla" and "ubsec" string definitions were moved from header files
4060 to C code. "nuron" string definitions were placed in variables
4061 rather than hard-coded - allowing parameterisation of these values
4062 later on via ctrl() commands.
4063 - Removed unused "#if 0"'d code.
4064 - Fixed engine list iteration code so it uses ENGINE_free() to release
4065 structural references.
4066 - Constified the RAND_METHOD element of ENGINE structures.
4067 - Constified various get/set functions as appropriate and added
4068 missing functions (including a catch-all ENGINE_cpy that duplicates
4069 all ENGINE values onto a new ENGINE except reference counts/state).
4070 - Removed NULL parameter checks in get/set functions. Setting a method
4071 or function to NULL is a way of cancelling out a previously set
4072 value. Passing a NULL ENGINE parameter is just plain stupid anyway
4073 and doesn't justify the extra error symbols and code.
4074 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
4075 flags from engine_int.h to engine.h.
4076 - Changed prototypes for ENGINE handler functions (init(), finish(),
4077 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
4080 *) Implement binary inversion algorithm for BN_mod_inverse in addition
4081 to the algorithm using long division. The binary algorithm can be
4082 used only if the modulus is odd. On 32-bit systems, it is faster
4083 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
4084 roughly 5-15% for 256-bit moduli), so we use it only for moduli
4085 up to 450 bits. In 64-bit environments, the binary algorithm
4086 appears to be advantageous for much longer moduli; here we use it
4087 for moduli up to 2048 bits.
4090 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
4091 could not support the combine flag in choice fields.
4094 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
4095 extensions from a certificate request to the certificate.
4098 *) Allow multiple 'certopt' and 'nameopt' options to be separated
4099 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
4100 file: this allows the display of the certificate about to be
4101 signed to be customised, to allow certain fields to be included
4102 or excluded and extension details. The old system didn't display
4103 multicharacter strings properly, omitted fields not in the policy
4104 and couldn't display additional details such as extensions.
4107 *) Function EC_POINTs_mul for multiple scalar multiplication
4108 of an arbitrary number of elliptic curve points
4109 \sum scalars[i]*points[i],
4110 optionally including the generator defined for the EC_GROUP:
4111 scalar*generator + \sum scalars[i]*points[i].
4113 EC_POINT_mul is a simple wrapper function for the typical case
4114 that the point list has just one item (besides the optional
4118 *) First EC_METHODs for curves over GF(p):
4120 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
4121 operations and provides various method functions that can also
4122 operate with faster implementations of modular arithmetic.
4124 EC_GFp_mont_method() reuses most functions that are part of
4125 EC_GFp_simple_method, but uses Montgomery arithmetic.
4127 [Bodo Moeller; point addition and point doubling
4128 implementation directly derived from source code provided by
4129 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
4131 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
4132 crypto/ec/ec_lib.c):
4134 Curves are EC_GROUP objects (with an optional group generator)
4135 based on EC_METHODs that are built into the library.
4137 Points are EC_POINT objects based on EC_GROUP objects.
4139 Most of the framework would be able to handle curves over arbitrary
4140 finite fields, but as there are no obvious types for fields other
4141 than GF(p), some functions are limited to that for now.
4144 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
4145 that the file contains a complete HTTP response.
4148 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
4149 change the def and num file printf format specifier from "%-40sXXX"
4150 to "%-39s XXX". The latter will always guarantee a space after the
4151 field while the former will cause them to run together if the field
4152 is 40 of more characters long.
4155 *) Constify the cipher and digest 'method' functions and structures
4156 and modify related functions to take constant EVP_MD and EVP_CIPHER
4160 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
4161 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
4164 *) Modify EVP_Digest*() routines so they now return values. Although the
4165 internal software routines can never fail additional hardware versions
4169 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
4171 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
4172 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
4175 ERR_R_NESTED_ASN1_ERROR
4177 ERR_R_MISSING_ASN1_EOS
4178 were 4 .. 9, conflicting with
4179 ERR_LIB_RSA (= ERR_R_RSA_LIB)
4181 ERR_LIB_PEM (= ERR_R_PEM_LIB).
4182 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
4184 Add new error code 'ERR_R_INTERNAL_ERROR'.
4187 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
4191 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
4192 sets the subject name for a new request or supersedes the
4193 subject name in a given request. Formats that can be parsed are
4194 'CN=Some Name, OU=myOU, C=IT'
4196 'CN=Some Name/OU=myOU/C=IT'.
4198 Add options '-batch' and '-verbose' to 'openssl req'.
4199 [Massimiliano Pala <madwolf@hackmasters.net>]
4201 *) Introduce the possibility to access global variables through
4202 functions on platform were that's the best way to handle exporting
4203 global variables in shared libraries. To enable this functionality,
4204 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
4205 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
4206 is normally done by Configure or something similar).
4208 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
4209 in the source file (foo.c) like this:
4211 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
4212 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
4214 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
4215 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
4217 OPENSSL_DECLARE_GLOBAL(int,foo);
4218 #define foo OPENSSL_GLOBAL_REF(foo)
4219 OPENSSL_DECLARE_GLOBAL(double,bar);
4220 #define bar OPENSSL_GLOBAL_REF(bar)
4222 The #defines are very important, and therefore so is including the
4223 header file everywhere where the defined globals are used.
4225 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
4226 of ASN.1 items, but that structure is a bit different.
4228 The largest change is in util/mkdef.pl which has been enhanced with
4229 better and easier to understand logic to choose which symbols should
4230 go into the Windows .def files as well as a number of fixes and code
4231 cleanup (among others, algorithm keywords are now sorted
4232 lexicographically to avoid constant rewrites).
projects / openssl.git / blob