5 Changes between 1.0.0 and 1.1.0 [xx XXX xxxx]
7 *) New -sigopt option to the ca, req and x509 utilities. Additional
8 signature parameters can be passed using this option and in
12 *) Add RSA PSS signing function. This will generate and set the
13 appropriate AlgorithmIdentifiers for PSS based on those in the
14 corresponding EVP_MD_CTX structure. No application support yet.
17 *) Support for companion algorithm specific ASN1 signing routines.
18 New function ASN1_item_sign_ctx() signs a pre-initialised
19 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
20 the appropriate parameters.
23 *) Add new algorithm specific ASN1 verification initialisation function
24 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
25 handling will be the same no matter what EVP_PKEY_METHOD is used.
26 Add a PSS handler to support verification of PSS signatures: checked
27 against a number of sample certificates.
30 *) Add signature printing for PSS. Add PSS OIDs.
31 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
33 *) Add algorithm specific signature printing. An individual ASN1 method
34 can now print out signatures instead of the standard hex dump.
36 More complex signatures (e.g. PSS) can print out more meaningful
37 information. Include DSA version that prints out the signature
41 *) Add -trusted_first option which attempts to find certificates in the
42 trusted store even if an untrusted chain is also supplied.
45 *) Initial experimental support for explicitly trusted non-root CAs.
46 OpenSSL still tries to build a complete chain to a root but if an
47 intermediate CA has a trust setting included that is used. The first
48 setting is used: whether to trust or reject.
51 *) New -verify_name option in command line utilities to set verification
55 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
56 Add CMAC pkey methods.
59 *) Experiemental regnegotiation in s_server -www mode. If the client
60 browses /reneg connection is renegotiated. If /renegcert it is
61 renegotiated requesting a certificate.
64 *) Add an "external" session cache for debugging purposes to s_server. This
65 should help trace issues which normally are only apparent in deployed
66 multi-process servers.
69 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
70 a few changes are required:
72 Add SSL_OP_NO_TLSv1_1 flag.
74 Update version checking logic to handle version 1.1.
75 Add explicit IV handling (ported from DTLS code).
76 Add command line options to s_client/s_server.
79 *) Experiemental password based recipient info support for CMS library:
83 *) Split password based encryption into PBES2 and PBKDF2 functions. This
84 neatly separates the code into cipher and PBE sections and is required
85 for some algorithms that split PBES2 into separate pieces (such as
89 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
90 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
91 BIO_set_cipher() and some obscure PEM functions were changed so they
92 can now return an error. The RAND changes required a change to the
93 RAND_METHOD structure.
96 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
97 a gcc attribute to warn if the result of a function is ignored. This
98 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
99 whose return value is often ignored.
102 Changes between 0.9.8n and 1.0.0 [xx XXX xxxx]
104 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
105 context. The operation can be customised via the ctrl mechanism in
106 case ENGINEs want to include additional functionality.
109 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
112 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
113 output hashes compatible with older versions of OpenSSL.
114 [Willy Weisz <weisz@vcpc.univie.ac.at>]
116 *) Fix compression algorithm handling: if resuming a session use the
117 compression algorithm of the resumed session instead of determining
118 it from client hello again. Don't allow server to change algorithm.
121 *) Add load_crls() function to apps tidying load_certs() too. Add option
122 to verify utility to allow additional CRLs to be included.
125 *) Update OCSP request code to permit adding custom headers to the request:
126 some responders need this.
129 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
131 [Julia Lawall <julia@diku.dk>]
133 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
134 needlessly dereferenced structures, used obsolete functions and
135 didn't handle all updated verify codes correctly.
138 *) Disable MD2 in the default configuration.
141 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
142 indicate the initial BIO being pushed or popped. This makes it possible
143 to determine whether the BIO is the one explicitly called or as a result
144 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
145 it handles reference counts correctly and doesn't zero out the I/O bio
146 when it is not being explicitly popped. WARNING: applications which
147 included workarounds for the old buggy behaviour will need to be modified
148 or they could free up already freed BIOs.
151 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
152 renaming to all platforms (within the 0.9.8 branch, this was
153 done conditionally on Netware platforms to avoid a name clash).
154 [Guenter <lists@gknw.net>]
156 *) Add ECDHE and PSK support to DTLS.
157 [Michael Tuexen <tuexen@fh-muenster.de>]
159 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
163 *) Add "missing" function EVP_MD_flags() (without this the only way to
164 retrieve a digest flags is by accessing the structure directly. Update
165 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
166 or cipher is registered as in the "from" argument. Print out all
167 registered digests in the dgst usage message instead of manually
168 attempting to work them out.
171 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
172 this allows the use of compression and extensions. Change default cipher
173 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
174 by default unless an application cipher string requests it.
177 *) Alter match criteria in PKCS12_parse(). It used to try to use local
178 key ids to find matching certificates and keys but some PKCS#12 files
179 don't follow the (somewhat unwritten) rules and this strategy fails.
180 Now just gather all certificates together and the first private key
181 then look for the first certificate that matches the key.
184 *) Support use of registered digest and cipher names for dgst and cipher
185 commands instead of having to add each one as a special case. So now
192 openssl dgst -sha256 foo
194 and this works for ENGINE based algorithms too.
198 *) Update Gost ENGINE to support parameter files.
199 [Victor B. Wagner <vitus@cryptocom.ru>]
201 *) Support GeneralizedTime in ca utility.
202 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
204 *) Enhance the hash format used for certificate directory links. The new
205 form uses the canonical encoding (meaning equivalent names will work
206 even if they aren't identical) and uses SHA1 instead of MD5. This form
207 is incompatible with the older format and as a result c_rehash should
208 be used to rebuild symbolic links.
211 *) Make PKCS#8 the default write format for private keys, replacing the
212 traditional format. This form is standardised, more secure and doesn't
213 include an implicit MD5 dependency.
216 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
217 committed to OpenSSL should pass this lot as a minimum.
220 *) Add session ticket override functionality for use by EAP-FAST.
221 [Jouni Malinen <j@w1.fi>]
223 *) Modify HMAC functions to return a value. Since these can be implemented
224 in an ENGINE errors can occur.
227 *) Type-checked OBJ_bsearch_ex.
230 *) Type-checked OBJ_bsearch. Also some constification necessitated
231 by type-checking. Still to come: TXT_DB, bsearch(?),
232 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
236 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
237 seconds to a tm structure directly, instead of going through OS
238 specific date routines. This avoids any issues with OS routines such
239 as the year 2038 bug. New *_adj() functions for ASN1 time structures
240 and X509_time_adj_ex() to cover the extended range. The existing
241 X509_time_adj() is still usable and will no longer have any date issues.
244 *) Delta CRL support. New use deltas option which will attempt to locate
245 and search any appropriate delta CRLs available.
247 This work was sponsored by Google.
250 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
251 code and add additional score elements. Validate alternate CRL paths
252 as part of the CRL checking and indicate a new error "CRL path validation
253 error" in this case. Applications wanting additional details can use
254 the verify callback and check the new "parent" field. If this is not
255 NULL CRL path validation is taking place. Existing applications wont
256 see this because it requires extended CRL support which is off by
259 This work was sponsored by Google.
262 *) Support for freshest CRL extension.
264 This work was sponsored by Google.
267 *) Initial indirect CRL support. Currently only supported in the CRLs
268 passed directly and not via lookup. Process certificate issuer
269 CRL entry extension and lookup CRL entries by bother issuer name
270 and serial number. Check and process CRL issuer entry in IDP extension.
272 This work was sponsored by Google.
275 *) Add support for distinct certificate and CRL paths. The CRL issuer
276 certificate is validated separately in this case. Only enabled if
277 an extended CRL support flag is set: this flag will enable additional
278 CRL functionality in future.
280 This work was sponsored by Google.
283 *) Add support for policy mappings extension.
285 This work was sponsored by Google.
288 *) Fixes to pathlength constraint, self issued certificate handling,
289 policy processing to align with RFC3280 and PKITS tests.
291 This work was sponsored by Google.
294 *) Support for name constraints certificate extension. DN, email, DNS
295 and URI types are currently supported.
297 This work was sponsored by Google.
300 *) To cater for systems that provide a pointer-based thread ID rather
301 than numeric, deprecate the current numeric thread ID mechanism and
302 replace it with a structure and associated callback type. This
303 mechanism allows a numeric "hash" to be extracted from a thread ID in
304 either case, and on platforms where pointers are larger than 'long',
305 mixing is done to help ensure the numeric 'hash' is usable even if it
306 can't be guaranteed unique. The default mechanism is to use "&errno"
307 as a pointer-based thread ID to distinguish between threads.
309 Applications that want to provide their own thread IDs should now use
310 CRYPTO_THREADID_set_callback() to register a callback that will call
311 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
313 Note that ERR_remove_state() is now deprecated, because it is tied
314 to the assumption that thread IDs are numeric. ERR_remove_state(0)
315 to free the current thread's error state should be replaced by
316 ERR_remove_thread_state(NULL).
318 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
319 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
320 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
321 application was previously providing a numeric thread callback that
322 was inappropriate for distinguishing threads, then uniqueness might
323 have been obtained with &errno that happened immediately in the
324 intermediate development versions of OpenSSL; this is no longer the
325 case, the numeric thread callback will now override the automatic use
327 [Geoff Thorpe, with help from Bodo Moeller]
329 *) Initial support for different CRL issuing certificates. This covers a
330 simple case where the self issued certificates in the chain exist and
331 the real CRL issuer is higher in the existing chain.
333 This work was sponsored by Google.
336 *) Removed effectively defunct crypto/store from the build.
339 *) Revamp of STACK to provide stronger type-checking. Still to come:
340 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
341 ASN1_STRING, CONF_VALUE.
344 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
345 RAM on SSL connections. This option can save about 34k per idle SSL.
348 *) Revamp of LHASH to provide stronger type-checking. Still to come:
349 STACK, TXT_DB, bsearch, qsort.
352 *) Initial support for Cryptographic Message Syntax (aka CMS) based
353 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
354 support for data, signedData, compressedData, digestedData and
355 encryptedData, envelopedData types included. Scripts to check against
356 RFC4134 examples draft and interop and consistency checks of many
357 content types and variants.
360 *) Add options to enc utility to support use of zlib compression BIO.
363 *) Extend mk1mf to support importing of options and assembly language
364 files from Configure script, currently only included in VC-WIN32.
365 The assembly language rules can now optionally generate the source
366 files from the associated perl scripts.
369 *) Implement remaining functionality needed to support GOST ciphersuites.
370 Interop testing has been performed using CryptoPro implementations.
371 [Victor B. Wagner <vitus@cryptocom.ru>]
373 *) s390x assembler pack.
376 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
380 *) Implement Opaque PRF Input TLS extension as specified in
381 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
382 official specification yet and no extension type assignment by
383 IANA exists, this extension (for now) will have to be explicitly
384 enabled when building OpenSSL by providing the extension number
385 to use. For example, specify an option
387 -DTLSEXT_TYPE_opaque_prf_input=0x9527
389 to the "config" or "Configure" script to enable the extension,
390 assuming extension number 0x9527 (which is a completely arbitrary
391 and unofficial assignment based on the MD5 hash of the Internet
392 Draft). Note that by doing so, you potentially lose
393 interoperability with other TLS implementations since these might
394 be using the same extension number for other purposes.
396 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
397 opaque PRF input value to use in the handshake. This will create
398 an interal copy of the length-'len' string at 'src', and will
399 return non-zero for success.
401 To get more control and flexibility, provide a callback function
404 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
405 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
409 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
412 Callback function 'cb' will be called in handshakes, and is
413 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
414 Argument 'arg' is for application purposes (the value as given to
415 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
416 be provided to the callback function). The callback function
417 has to return non-zero to report success: usually 1 to use opaque
418 PRF input just if possible, or 2 to enforce use of the opaque PRF
419 input. In the latter case, the library will abort the handshake
420 if opaque PRF input is not successfully negotiated.
422 Arguments 'peerinput' and 'len' given to the callback function
423 will always be NULL and 0 in the case of a client. A server will
424 see the client's opaque PRF input through these variables if
425 available (NULL and 0 otherwise). Note that if the server
426 provides an opaque PRF input, the length must be the same as the
427 length of the client's opaque PRF input.
429 Note that the callback function will only be called when creating
430 a new session (session resumption can resume whatever was
431 previously negotiated), and will not be called in SSL 2.0
432 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
433 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
434 for applications that need to enforce opaque PRF input.
438 *) Update ssl code to support digests other than SHA1+MD5 for handshake
441 [Victor B. Wagner <vitus@cryptocom.ru>]
443 *) Add RFC4507 support to OpenSSL. This includes the corrections in
444 RFC4507bis. The encrypted ticket format is an encrypted encoded
445 SSL_SESSION structure, that way new session features are automatically
448 If a client application caches session in an SSL_SESSION structure
449 support is transparent because tickets are now stored in the encoded
452 The SSL_CTX structure automatically generates keys for ticket
453 protection in servers so again support should be possible
454 with no application modification.
456 If a client or server wishes to disable RFC4507 support then the option
457 SSL_OP_NO_TICKET can be set.
459 Add a TLS extension debugging callback to allow the contents of any client
460 or server extensions to be examined.
462 This work was sponsored by Google.
465 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
466 OpenSSL should now compile cleanly on gcc 4.2
467 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
469 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
470 support including streaming MAC support: this is required for GOST
472 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
474 *) Add option -stream to use PKCS#7 streaming in smime utility. New
475 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
476 to output in BER and PEM format.
479 *) Experimental support for use of HMAC via EVP_PKEY interface. This
480 allows HMAC to be handled via the EVP_DigestSign*() interface. The
481 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
482 ENGINE support for HMAC keys which are unextractable. New -mac and
483 -macopt options to dgst utility.
486 *) New option -sigopt to dgst utility. Update dgst to use
487 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
488 alternative signing paramaters such as X9.31 or PSS in the dgst
492 *) Change ssl_cipher_apply_rule(), the internal function that does
493 the work each time a ciphersuite string requests enabling
494 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
495 removing ("!foo+bar") a class of ciphersuites: Now it maintains
496 the order of disabled ciphersuites such that those ciphersuites
497 that most recently went from enabled to disabled not only stay
498 in order with respect to each other, but also have higher priority
499 than other disabled ciphersuites the next time ciphersuites are
502 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
503 the same ciphersuites as with "HIGH" alone, but in a specific
504 order where the PSK ciphersuites come first (since they are the
505 most recently disabled ciphersuites when "HIGH" is parsed).
507 Also, change ssl_create_cipher_list() (using this new
508 funcionality) such that between otherwise identical
509 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
513 *) Change ssl_create_cipher_list() so that it automatically
514 arranges the ciphersuites in reasonable order before starting
515 to process the rule string. Thus, the definition for "DEFAULT"
516 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
517 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
518 This makes it much easier to arrive at a reasonable default order
519 in applications for which anonymous ciphers are OK (meaning
520 that you can't actually use DEFAULT).
521 [Bodo Moeller; suggested by Victor Duchovni]
523 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
524 processing) into multiple integers instead of setting
525 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
526 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
527 (These masks as well as the individual bit definitions are hidden
528 away into the non-exported interface ssl/ssl_locl.h, so this
529 change to the definition of the SSL_CIPHER structure shouldn't
530 affect applications.) This give us more bits for each of these
531 categories, so there is no longer a need to coagulate AES128 and
532 AES256 into a single algorithm bit, and to coagulate Camellia128
533 and Camellia256 into a single algorithm bit, which has led to all
536 Thus, among other things, the kludge introduced in 0.9.7m and
537 0.9.8e for masking out AES256 independently of AES128 or masking
538 out Camellia256 independently of AES256 is not needed here in 0.9.9.
540 With the change, we also introduce new ciphersuite aliases that
541 so far were missing: "AES128", "AES256", "CAMELLIA128", and
545 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
546 Use the leftmost N bytes of the signature input if the input is
547 larger than the prime q (with N being the size in bytes of q).
550 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
551 it yet and it is largely untested.
554 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
557 *) Initial incomplete changes to avoid need for function casts in OpenSSL
558 some compilers (gcc 4.2 and later) reject their use. Safestack is
559 reimplemented. Update ASN1 to avoid use of legacy functions.
562 *) Win32/64 targets are linked with Winsock2.
565 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
566 to external functions. This can be used to increase CRL handling
567 efficiency especially when CRLs are very large by (for example) storing
568 the CRL revoked certificates in a database.
571 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
572 new CRLs added to a directory can be used. New command line option
573 -verify_return_error to s_client and s_server. This causes real errors
574 to be returned by the verify callback instead of carrying on no matter
575 what. This reflects the way a "real world" verify callback would behave.
578 *) GOST engine, supporting several GOST algorithms and public key formats.
579 Kindly donated by Cryptocom.
582 *) Partial support for Issuing Distribution Point CRL extension. CRLs
583 partitioned by DP are handled but no indirect CRL or reason partitioning
584 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
585 selected via a scoring technique which handles IDP and AKID in CRLs.
588 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
589 will ultimately be used for all verify operations: this will remove the
590 X509_STORE dependency on certificate verification and allow alternative
591 lookup methods. X509_STORE based implementations of these two callbacks.
594 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
595 Modify get_crl() to find a valid (unexpired) CRL if possible.
598 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
599 this would be called X509_CRL_cmp() but that name is already used by
600 a function that just compares CRL issuer names. Cache several CRL
601 extensions in X509_CRL structure and cache CRLDP in X509.
604 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
605 this maps equivalent X509_NAME structures into a consistent structure.
606 Name comparison can then be performed rapidly using memcmp().
609 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
613 *) Allow digests to supply their own micalg string for S/MIME type using
614 the ctrl EVP_MD_CTRL_MICALG.
617 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
618 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
619 ctrl. It can then customise the structure before and/or after signing
623 *) New function OBJ_add_sigid() to allow application defined signature OIDs
624 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
625 to free up any added signature OIDs.
628 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
629 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
630 digest and cipher tables. New options added to openssl utility:
631 list-message-digest-algorithms and list-cipher-algorithms.
634 *) Change the array representation of binary polynomials: the list
635 of degrees of non-zero coefficients is now terminated with -1.
636 Previously it was terminated with 0, which was also part of the
637 value; thus, the array representation was not applicable to
638 polynomials where t^0 has coefficient zero. This change makes
639 the array representation useful in a more general context.
642 *) Various modifications and fixes to SSL/TLS cipher string
643 handling. For ECC, the code now distinguishes between fixed ECDH
644 with RSA certificates on the one hand and with ECDSA certificates
645 on the other hand, since these are separate ciphersuites. The
646 unused code for Fortezza ciphersuites has been removed.
648 For consistency with EDH, ephemeral ECDH is now called "EECDH"
649 (not "ECDHE"). For consistency with the code for DH
650 certificates, use of ECDH certificates is now considered ECDH
651 authentication, not RSA or ECDSA authentication (the latter is
652 merely the CA's signing algorithm and not actively used in the
655 The temporary ciphersuite alias "ECCdraft" is no longer
656 available, and ECC ciphersuites are no longer excluded from "ALL"
657 and "DEFAULT". The following aliases now exist for RFC 4492
658 ciphersuites, most of these by analogy with the DH case:
660 kECDHr - ECDH cert, signed with RSA
661 kECDHe - ECDH cert, signed with ECDSA
662 kECDH - ECDH cert (signed with either RSA or ECDSA)
663 kEECDH - ephemeral ECDH
664 ECDH - ECDH cert or ephemeral ECDH
670 AECDH - anonymous ECDH
671 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
675 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
676 Use correct micalg parameters depending on digest(s) in signed message.
679 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
680 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
683 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
684 an engine to register a method. Add ENGINE lookups for methods and
685 functional reference processing.
688 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
689 EVP_{Sign,Verify}* which allow an application to customise the signature
693 *) New -resign option to smime utility. This adds one or more signers
694 to an existing PKCS#7 signedData structure. Also -md option to use an
695 alternative message digest algorithm for signing.
698 *) Tidy up PKCS#7 routines and add new functions to make it easier to
699 create PKCS7 structures containing multiple signers. Update smime
700 application to support multiple signers.
703 *) New -macalg option to pkcs12 utility to allow setting of an alternative
707 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
708 Reorganize PBE internals to lookup from a static table using NIDs,
709 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
710 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
711 PRF which will be automatically used with PBES2.
714 *) Replace the algorithm specific calls to generate keys in "req" with the
718 *) Update PKCS#7 enveloped data routines to use new API. This is now
719 supported by any public key method supporting the encrypt operation. A
720 ctrl is added to allow the public key algorithm to examine or modify
721 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
725 *) Add a ctrl to asn1 method to allow a public key algorithm to express
726 a default digest type to use. In most cases this will be SHA1 but some
727 algorithms (such as GOST) need to specify an alternative digest. The
728 return value indicates how strong the prefernce is 1 means optional and
729 2 is mandatory (that is it is the only supported type). Modify
730 ASN1_item_sign() to accept a NULL digest argument to indicate it should
731 use the default md. Update openssl utilities to use the default digest
732 type for signing if it is not explicitly indicated.
735 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
736 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
737 signing method from the key type. This effectively removes the link
738 between digests and public key types.
741 *) Add an OID cross reference table and utility functions. Its purpose is to
742 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
743 rsaEncryption. This will allow some of the algorithm specific hackery
744 needed to use the correct OID to be removed.
747 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
748 structures for PKCS7_sign(). They are now set up by the relevant public
752 *) Add provisional EC pkey method with support for ECDSA and ECDH.
755 *) Add support for key derivation (agreement) in the API, DH method and
759 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
760 public and private key formats. As a side effect these add additional
761 command line functionality not previously available: DSA signatures can be
762 generated and verified using pkeyutl and DH key support and generation in
767 [Oliver Tappe <zooey@hirschkaefer.de>]
769 *) New make target "install_html_docs" installs HTML renditions of the
771 [Oliver Tappe <zooey@hirschkaefer.de>]
773 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
774 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
775 support key and parameter generation and add initial key generation
776 functionality for RSA.
779 *) Add functions for main EVP_PKEY_method operations. The undocumented
780 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
781 EVP_PKEY_{encrypt,decrypt}_old.
784 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
785 key API, doesn't do much yet.
788 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
789 public key algorithms. New option to openssl utility:
790 "list-public-key-algorithms" to print out info.
793 *) Implement the Supported Elliptic Curves Extension for
794 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
797 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
798 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
801 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
802 utilities such as rsa, dsa, dsaparam etc except they process any key
806 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
807 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
808 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
812 *) Initial support for pluggable public key ASN1.
813 De-spaghettify the public key ASN1 handling. Move public and private
814 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
815 algorithm specific handling to a single module within the relevant
816 algorithm directory. Add functions to allow (near) opaque processing
817 of public and private key structures.
820 *) Implement the Supported Point Formats Extension for
821 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
824 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
825 for the psk identity [hint] and the psk callback functions to the
826 SSL_SESSION, SSL and SSL_CTX structure.
829 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
833 SSL_CTX_use_psk_identity_hint
834 SSL_get_psk_identity_hint
836 SSL_use_psk_identity_hint
838 [Mika Kousa and Pasi Eronen of Nokia Corporation]
840 *) Add RFC 3161 compliant time stamp request creation, response generation
841 and response verification functionality.
842 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
844 *) Add initial support for TLS extensions, specifically for the server_name
845 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
846 have new members for a host name. The SSL data structure has an
847 additional member SSL_CTX *initial_ctx so that new sessions can be
848 stored in that context to allow for session resumption, even after the
849 SSL has been switched to a new SSL_CTX in reaction to a client's
850 server_name extension.
852 New functions (subject to change):
855 SSL_get_servername_type()
858 New CTRL codes and macros (subject to change):
860 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
861 - SSL_CTX_set_tlsext_servername_callback()
862 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
863 - SSL_CTX_set_tlsext_servername_arg()
864 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
866 openssl s_client has a new '-servername ...' option.
868 openssl s_server has new options '-servername_host ...', '-cert2 ...',
869 '-key2 ...', '-servername_fatal' (subject to change). This allows
870 testing the HostName extension for a specific single host name ('-cert'
871 and '-key' remain fallbacks for handshakes without HostName
872 negotiation). If the unrecogninzed_name alert has to be sent, this by
873 default is a warning; it becomes fatal with the '-servername_fatal'
876 [Peter Sylvester, Remy Allais, Christophe Renou]
878 *) Whirlpool hash implementation is added.
881 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
882 bn(64,32). Because of instruction set limitations it doesn't have
883 any negative impact on performance. This was done mostly in order
884 to make it possible to share assembler modules, such as bn_mul_mont
885 implementations, between 32- and 64-bit builds without hassle.
888 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
889 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
893 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
894 dedicated Montgomery multiplication procedure, is introduced.
895 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
896 "64-bit" performance on certain 32-bit targets.
899 *) New option SSL_OP_NO_COMP to disable use of compression selectively
900 in SSL structures. New SSL ctrl to set maximum send fragment size.
901 Save memory by seeting the I/O buffer sizes dynamically instead of
902 using the maximum available value.
905 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
906 in addition to the text details.
909 *) Very, very preliminary EXPERIMENTAL support for printing of general
910 ASN1 structures. This currently produces rather ugly output and doesn't
911 handle several customised structures at all.
914 *) Integrated support for PVK file format and some related formats such
915 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
916 these in the 'rsa' and 'dsa' utilities.
919 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
922 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
923 place for the (very old) "NETSCAPE" format certificates which are now
924 handled using new ASN1 code equivalents.
927 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
928 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
929 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
932 *) Modify CRL distribution points extension code to print out previously
933 unsupported fields. Enhance extension setting code to allow setting of
937 *) Add print and set support for Issuing Distribution Point CRL extension.
940 *) Change 'Configure' script to enable Camellia by default.
943 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
945 *) When rejecting SSL/TLS records due to an incorrect version number, never
946 update s->server with a new major version number. As of
947 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
948 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
949 the previous behavior could result in a read attempt at NULL when
950 receiving specific incorrect SSL/TLS records once record payload
951 protection is active. (CVE-2010-####)
952 [Bodo Moeller, Adam Langley]
954 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
955 could be crashed if the relevant tables were not present (e.g. chrooted).
956 [Tomas Hoger <thoger@redhat.com>]
958 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
960 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
961 [Martin Olsson, Neel Mehta]
963 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
964 accommodate for stack sorting, always a write lock!).
967 *) On some versions of WIN32 Heap32Next is very slow. This can cause
968 excessive delays in the RAND_poll(): over a minute. As a workaround
969 include a time check in the inner Heap32Next loop too.
972 *) The code that handled flushing of data in SSL/TLS originally used the
973 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
974 the problem outlined in PR#1949. The fix suggested there however can
975 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
976 of Apache). So instead simplify the code to flush unconditionally.
977 This should be fine since flushing with no data to flush is a no op.
980 *) Handle TLS versions 2.0 and later properly and correctly use the
981 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
982 off ancient servers have a habit of sticking around for a while...
985 *) Modify compression code so it frees up structures without using the
986 ex_data callbacks. This works around a problem where some applications
987 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
988 restarting) then use compression (e.g. SSL with compression) later.
989 This results in significant per-connection memory leaks and
990 has caused some security issues including CVE-2008-1678 and
994 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
995 change when encrypting or decrypting.
998 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
999 connect and renegotiate with servers which do not support RI.
1000 Until RI is more widely deployed this option is enabled by default.
1003 *) Add "missing" ssl ctrls to clear options and mode.
1006 *) If client attempts to renegotiate and doesn't support RI respond with
1007 a no_renegotiation alert as required by RFC5746. Some renegotiating
1008 TLS clients will continue a connection gracefully when they receive
1009 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1010 waiting for a server hello which it will never receive. Now we treat a
1011 received no_renegotiation alert as a fatal error. This is because
1012 applications requesting a renegotiation might well expect it to succeed
1013 and would have no code in place to handle the server denying it so the
1014 only safe thing to do is to terminate the connection.
1017 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1018 peer supports secure renegotiation and 0 otherwise. Print out peer
1019 renegotiation support in s_client/s_server.
1022 *) Replace the highly broken and deprecated SPKAC certification method with
1023 the updated NID creation version. This should correctly handle UTF8.
1026 *) Implement RFC5746. Re-enable renegotiation but require the extension
1027 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1028 turns out to be a bad idea. It has been replaced by
1029 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1030 SSL_CTX_set_options(). This is really not recommended unless you
1031 know what you are doing.
1032 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1034 *) Fixes to stateless session resumption handling. Use initial_ctx when
1035 issuing and attempting to decrypt tickets in case it has changed during
1036 servername handling. Use a non-zero length session ID when attempting
1037 stateless session resumption: this makes it possible to determine if
1038 a resumption has occurred immediately after receiving server hello
1039 (several places in OpenSSL subtly assume this) instead of later in
1043 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1044 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1045 fixes for a few places where the return code is not checked
1047 [Julia Lawall <julia@diku.dk>]
1049 *) Add --strict-warnings option to Configure script to include devteam
1050 warnings in other configurations.
1053 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1054 makes it possible to install openssl libraries in locations which
1055 have names other than "lib", for example "/usr/lib64" which some
1057 [Steve Henson, based on patch from Jeremy Utley]
1059 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1060 X690 8.9.12 and can produce some misleading textual output of OIDs.
1061 [Steve Henson, reported by Dan Kaminsky]
1063 *) Delete MD2 from algorithm tables. This follows the recommendation in
1064 several standards that it is not used in new applications due to
1065 several cryptographic weaknesses. For binary compatibility reasons
1066 the MD2 API is still compiled in by default.
1069 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1073 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1074 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1076 [Guenter <lists@gknw.net>]
1078 *) Fix the server certificate chain building code to use X509_verify_cert(),
1079 it used to have an ad-hoc builder which was unable to cope with anything
1080 other than a simple chain.
1081 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1083 *) Don't check self signed certificate signatures in X509_verify_cert()
1084 by default (a flag can override this): it just wastes time without
1085 adding any security. As a useful side effect self signed root CAs
1086 with non-FIPS digests are now usable in FIPS mode.
1089 *) In dtls1_process_out_of_seq_message() the check if the current message
1090 is already buffered was missing. For every new message was memory
1091 allocated, allowing an attacker to perform an denial of service attack
1092 with sending out of seq handshake messages until there is no memory
1093 left. Additionally every future messege was buffered, even if the
1094 sequence number made no sense and would be part of another handshake.
1095 So only messages with sequence numbers less than 10 in advance will be
1096 buffered. (CVE-2009-1378)
1097 [Robin Seggelmann, discovered by Daniel Mentz]
1099 *) Records are buffered if they arrive with a future epoch to be
1100 processed after finishing the corresponding handshake. There is
1101 currently no limitation to this buffer allowing an attacker to perform
1102 a DOS attack with sending records with future epochs until there is no
1103 memory left. This patch adds the pqueue_size() function to detemine
1104 the size of a buffer and limits the record buffer to 100 entries.
1106 [Robin Seggelmann, discovered by Daniel Mentz]
1108 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1109 parent structure is freed. (CVE-2009-1379)
1112 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1113 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1116 [Ilya O. <vrghost@gmail.com>]
1118 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1120 *) Disable renegotiation completely - this fixes a severe security
1121 problem (CVE-2009-3555) at the cost of breaking all
1122 renegotiation. Renegotiation can be re-enabled by setting
1123 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1124 run-time. This is really not recommended unless you know what
1128 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1130 *) Don't set val to NULL when freeing up structures, it is freed up by
1131 underlying code. If sizeof(void *) > sizeof(long) this can result in
1132 zeroing past the valid field. (CVE-2009-0789)
1133 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1135 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1136 checked correctly. This would allow some invalid signed attributes to
1137 appear to verify correctly. (CVE-2009-0591)
1138 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1140 *) Reject UniversalString and BMPString types with invalid lengths. This
1141 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1142 a legal length. (CVE-2009-0590)
1145 *) Set S/MIME signing as the default purpose rather than setting it
1146 unconditionally. This allows applications to override it at the store
1150 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1151 to handle some structures.
1154 *) Improve efficiency of mem_gets: don't search whole buffer each time
1156 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1158 *) New -hex option for openssl rand.
1161 *) Print out UTF8String and NumericString when parsing ASN1.
1164 *) Support NumericString type for name components.
1167 *) Allow CC in the environment to override the automatically chosen
1168 compiler. Note that nothing is done to ensure flags work with the
1172 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1174 *) Properly check EVP_VerifyFinal() and similar return values
1176 [Ben Laurie, Bodo Moeller, Google Security Team]
1178 *) Enable TLS extensions by default.
1181 *) Allow the CHIL engine to be loaded, whether the application is
1182 multithreaded or not. (This does not release the developer from the
1183 obligation to set up the dynamic locking callbacks.)
1184 [Sander Temme <sander@temme.net>]
1186 *) Use correct exit code if there is an error in dgst command.
1187 [Steve Henson; problem pointed out by Roland Dirlewanger]
1189 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1190 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1193 *) Add experimental JPAKE support, including demo authentication in
1194 s_client and s_server.
1197 *) Set the comparison function in v3_addr_canonize().
1198 [Rob Austein <sra@hactrn.net>]
1200 *) Add support for XMPP STARTTLS in s_client.
1201 [Philip Paeps <philip@freebsd.org>]
1203 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1204 to ensure that even with this option, only ciphersuites in the
1205 server's preference list will be accepted. (Note that the option
1206 applies only when resuming a session, so the earlier behavior was
1207 just about the algorithm choice for symmetric cryptography.)
1210 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1212 *) Fix NULL pointer dereference if a DTLS server received
1213 ChangeCipherSpec as first record (CVE-2009-1386).
1216 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1217 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1220 *) The fix in 0.9.8c that supposedly got rid of unsafe
1221 double-checked locking was incomplete for RSA blinding,
1222 addressing just one layer of what turns out to have been
1223 doubly unsafe triple-checked locking.
1225 So now fix this for real by retiring the MONT_HELPER macro
1226 in crypto/rsa/rsa_eay.c.
1228 [Bodo Moeller; problem pointed out by Marius Schilder]
1230 *) Various precautionary measures:
1232 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1234 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1235 (NB: This would require knowledge of the secret session ticket key
1236 to exploit, in which case you'd be SOL either way.)
1238 - Change bn_nist.c so that it will properly handle input BIGNUMs
1239 outside the expected range.
1241 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1244 [Neel Mehta, Bodo Moeller]
1246 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1247 the load fails. Useful for distros.
1248 [Ben Laurie and the FreeBSD team]
1250 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1253 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1256 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1258 This work was sponsored by Logica.
1261 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1262 keystores. Support for SSL/TLS client authentication too.
1263 Not compiled unless enable-capieng specified to Configure.
1265 This work was sponsored by Logica.
1268 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1269 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1270 attribute creation routines such as certifcate requests and PKCS#12
1274 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1276 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1277 handshake which could lead to a cilent crash as found using the
1278 Codenomicon TLS test suite (CVE-2008-1672)
1279 [Steve Henson, Mark Cox]
1281 *) Fix double free in TLS server name extensions which could lead to
1282 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1285 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1287 Clear the error queue to ensure that error entries left from
1288 older function calls do not interfere with the correct operation.
1289 [Lutz Jaenicke, Erik de Castro Lopo]
1291 *) Remove root CA certificates of commercial CAs:
1293 The OpenSSL project does not recommend any specific CA and does not
1294 have any policy with respect to including or excluding any CA.
1295 Therefore it does not make any sense to ship an arbitrary selection
1296 of root CA certificates with the OpenSSL software.
1299 *) RSA OAEP patches to fix two separate invalid memory reads.
1300 The first one involves inputs when 'lzero' is greater than
1301 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1302 before the beginning of from). The second one involves inputs where
1303 the 'db' section contains nothing but zeroes (there is a one-byte
1304 invalid read after the end of 'db').
1305 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1307 *) Partial backport from 0.9.9-dev:
1309 Introduce bn_mul_mont (dedicated Montgomery multiplication
1310 procedure) as a candidate for BIGNUM assembler implementation.
1311 While 0.9.9-dev uses assembler for various architectures, only
1312 x86_64 is available by default here in the 0.9.8 branch, and
1313 32-bit x86 is available through a compile-time setting.
1315 To try the 32-bit x86 assembler implementation, use Configure
1316 option "enable-montasm" (which exists only for this backport).
1318 As "enable-montasm" for 32-bit x86 disclaims code stability
1319 anyway, in this constellation we activate additional code
1320 backported from 0.9.9-dev for further performance improvements,
1321 namely BN_from_montgomery_word. (To enable this otherwise,
1322 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1324 [Andy Polyakov (backport partially by Bodo Moeller)]
1326 *) Add TLS session ticket callback. This allows an application to set
1327 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1328 values. This is useful for key rollover for example where several key
1329 sets may exist with different names.
1332 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1333 This was broken until now in 0.9.8 releases, such that the only way
1334 a registered ENGINE could be used (assuming it initialises
1335 successfully on the host) was to explicitly set it as the default
1336 for the relevant algorithms. This is in contradiction with 0.9.7
1337 behaviour and the documentation. With this fix, when an ENGINE is
1338 registered into a given algorithm's table of implementations, the
1339 'uptodate' flag is reset so that auto-discovery will be used next
1340 time a new context for that algorithm attempts to select an
1342 [Ian Lister (tweaked by Geoff Thorpe)]
1344 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1345 implemention in the following ways:
1347 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1350 Lack of BER streaming support means one pass streaming processing is
1351 only supported if data is detached: setting the streaming flag is
1352 ignored for embedded content.
1354 CMS support is disabled by default and must be explicitly enabled
1355 with the enable-cms configuration option.
1358 *) Update the GMP engine glue to do direct copies between BIGNUM and
1359 mpz_t when openssl and GMP use the same limb size. Otherwise the
1360 existing "conversion via a text string export" trick is still used.
1361 [Paul Sheer <paulsheer@gmail.com>]
1363 *) Zlib compression BIO. This is a filter BIO which compressed and
1364 uncompresses any data passed through it.
1367 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1368 RFC3394 compatible AES key wrapping.
1371 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1372 sets string data without copying. X509_ALGOR_set0() and
1373 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1374 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1375 from an X509_ATTRIBUTE structure optionally checking it occurs only
1376 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1380 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1381 to get the expected BN_FLG_CONSTTIME behavior.
1382 [Bodo Moeller (Google)]
1386 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1387 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1388 - added some more tests to do_tests.pl
1389 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1390 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1391 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1392 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1393 - various changes to netware.pl to enable gcc-cross builds on Win32
1395 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1396 - various changes to fix missing prototype warnings
1397 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1398 - added AES, WHIRLPOOL and CPUID assembler code to build files
1399 - added missing AES assembler make rules to mk1mf.pl
1400 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1401 [Guenter Knauf <eflash@gmx.net>]
1403 *) Implement certificate status request TLS extension defined in RFC3546.
1404 A client can set the appropriate parameters and receive the encoded
1405 OCSP response via a callback. A server can query the supplied parameters
1406 and set the encoded OCSP response in the callback. Add simplified examples
1407 to s_client and s_server.
1410 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1412 *) Fix various bugs:
1413 + Binary incompatibility of ssl_ctx_st structure
1414 + DTLS interoperation with non-compliant servers
1415 + Don't call get_session_cb() without proposed session
1416 + Fix ia64 assembler code
1417 [Andy Polyakov, Steve Henson]
1419 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1421 *) DTLS Handshake overhaul. There were longstanding issues with
1422 OpenSSL DTLS implementation, which were making it impossible for
1423 RFC 4347 compliant client to communicate with OpenSSL server.
1424 Unfortunately just fixing these incompatibilities would "cut off"
1425 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1426 server keeps tolerating non RFC compliant syntax. The opposite is
1427 not true, 0.9.8f client can not communicate with earlier server.
1428 This update even addresses CVE-2007-4995.
1431 *) Changes to avoid need for function casts in OpenSSL: some compilers
1432 (gcc 4.2 and later) reject their use.
1433 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1436 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1437 RFC4507bis. The encrypted ticket format is an encrypted encoded
1438 SSL_SESSION structure, that way new session features are automatically
1441 If a client application caches session in an SSL_SESSION structure
1442 support is transparent because tickets are now stored in the encoded
1445 The SSL_CTX structure automatically generates keys for ticket
1446 protection in servers so again support should be possible
1447 with no application modification.
1449 If a client or server wishes to disable RFC4507 support then the option
1450 SSL_OP_NO_TICKET can be set.
1452 Add a TLS extension debugging callback to allow the contents of any client
1453 or server extensions to be examined.
1455 This work was sponsored by Google.
1458 *) Add initial support for TLS extensions, specifically for the server_name
1459 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1460 have new members for a host name. The SSL data structure has an
1461 additional member SSL_CTX *initial_ctx so that new sessions can be
1462 stored in that context to allow for session resumption, even after the
1463 SSL has been switched to a new SSL_CTX in reaction to a client's
1464 server_name extension.
1466 New functions (subject to change):
1468 SSL_get_servername()
1469 SSL_get_servername_type()
1472 New CTRL codes and macros (subject to change):
1474 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1475 - SSL_CTX_set_tlsext_servername_callback()
1476 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1477 - SSL_CTX_set_tlsext_servername_arg()
1478 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1480 openssl s_client has a new '-servername ...' option.
1482 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1483 '-key2 ...', '-servername_fatal' (subject to change). This allows
1484 testing the HostName extension for a specific single host name ('-cert'
1485 and '-key' remain fallbacks for handshakes without HostName
1486 negotiation). If the unrecogninzed_name alert has to be sent, this by
1487 default is a warning; it becomes fatal with the '-servername_fatal'
1490 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1492 *) Add AES and SSE2 assembly language support to VC++ build.
1495 *) Mitigate attack on final subtraction in Montgomery reduction.
1498 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1499 (which previously caused an internal error).
1502 *) Squeeze another 10% out of IGE mode when in != out.
1505 *) AES IGE mode speedup.
1506 [Dean Gaudet (Google)]
1508 *) Add the Korean symmetric 128-bit cipher SEED (see
1509 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1510 add SEED ciphersuites from RFC 4162:
1512 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1513 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1514 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1515 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1517 To minimize changes between patchlevels in the OpenSSL 0.9.8
1518 series, SEED remains excluded from compilation unless OpenSSL
1519 is configured with 'enable-seed'.
1520 [KISA, Bodo Moeller]
1522 *) Mitigate branch prediction attacks, which can be practical if a
1523 single processor is shared, allowing a spy process to extract
1524 information. For detailed background information, see
1525 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1526 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1527 and Necessary Software Countermeasures"). The core of the change
1528 are new versions BN_div_no_branch() and
1529 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1530 respectively, which are slower, but avoid the security-relevant
1531 conditional branches. These are automatically called by BN_div()
1532 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1533 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1534 remove a conditional branch.
1536 BN_FLG_CONSTTIME is the new name for the previous
1537 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1538 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1539 in the exponent causes BN_mod_exp_mont() to use the alternative
1540 implementation in BN_mod_exp_mont_consttime().) The old name
1541 remains as a deprecated alias.
1543 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1544 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1545 constant-time implementations for more than just exponentiation.
1546 Here too the old name is kept as a deprecated alias.
1548 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1549 the BN_BLINDING structure gets an independent copy of the
1550 modulus. This means that the previous "BIGNUM *m" argument to
1551 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1552 essentially becomes "const BIGNUM *m", although we can't actually
1553 change this in the header file before 0.9.9. It allows
1554 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1555 enable BN_FLG_CONSTTIME.
1557 [Matthew D Wood (Intel Corp)]
1559 *) In the SSL/TLS server implementation, be strict about session ID
1560 context matching (which matters if an application uses a single
1561 external cache for different purposes). Previously,
1562 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1563 set. This did ensure strict client verification, but meant that,
1564 with applications using a single external cache for quite
1565 different requirements, clients could circumvent ciphersuite
1566 restrictions for a given session ID context by starting a session
1567 in a different context.
1570 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1571 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1572 authentication-only ciphersuites.
1575 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1576 not complete and could lead to a possible single byte overflow
1577 (CVE-2007-5135) [Ben Laurie]
1579 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1581 *) Since AES128 and AES256 (and similarly Camellia128 and
1582 Camellia256) share a single mask bit in the logic of
1583 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1584 kludge to work properly if AES128 is available and AES256 isn't
1585 (or if Camellia128 is available and Camellia256 isn't).
1588 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1589 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1590 When a point or a seed is encoded in a BIT STRING, we need to
1591 prevent the removal of trailing zero bits to get the proper DER
1592 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1593 of a NamedBitList, for which trailing 0 bits need to be removed.)
1596 *) Have SSL/TLS server implementation tolerate "mismatched" record
1597 protocol version while receiving ClientHello even if the
1598 ClientHello is fragmented. (The server can't insist on the
1599 particular protocol version it has chosen before the ServerHello
1600 message has informed the client about his choice.)
1603 *) Add RFC 3779 support.
1604 [Rob Austein for ARIN, Ben Laurie]
1606 *) Load error codes if they are not already present instead of using a
1607 static variable. This allows them to be cleanly unloaded and reloaded.
1608 Improve header file function name parsing.
1611 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1612 or CAPABILITY handshake as required by RFCs.
1615 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1617 *) Introduce limits to prevent malicious keys being able to
1618 cause a denial of service. (CVE-2006-2940)
1619 [Steve Henson, Bodo Moeller]
1621 *) Fix ASN.1 parsing of certain invalid structures that can result
1622 in a denial of service. (CVE-2006-2937) [Steve Henson]
1624 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1625 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1627 *) Fix SSL client code which could crash if connecting to a
1628 malicious SSLv2 server. (CVE-2006-4343)
1629 [Tavis Ormandy and Will Drewry, Google Security Team]
1631 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1632 match only those. Before that, "AES256-SHA" would be interpreted
1633 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1634 the same strength classification in 0.9.7h) as we currently only
1635 have a single AES bit in the ciphersuite description bitmap.
1636 That change, however, also applied to ciphersuite strings such as
1637 "RC4-MD5" that intentionally matched multiple ciphersuites --
1638 namely, SSL 2.0 ciphersuites in addition to the more common ones
1639 from SSL 3.0/TLS 1.0.
1641 So we change the selection algorithm again: Naming an explicit
1642 ciphersuite selects this one ciphersuite, and any other similar
1643 ciphersuite (same bitmap) from *other* protocol versions.
1644 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1645 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1647 Since SSL 2.0 does not have any ciphersuites for which the
1648 128/256 bit distinction would be relevant, this works for now.
1649 The proper fix will be to use different bits for AES128 and
1650 AES256, which would have avoided the problems from the beginning;
1651 however, bits are scarce, so we can only do this in a new release
1652 (not just a patchlevel) when we can change the SSL_CIPHER
1653 definition to split the single 'unsigned long mask' bitmap into
1654 multiple values to extend the available space.
1658 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1660 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1661 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1663 *) Add AES IGE and biIGE modes.
1666 *) Change the Unix randomness entropy gathering to use poll() when
1667 possible instead of select(), since the latter has some
1668 undesirable limitations.
1669 [Darryl Miles via Richard Levitte and Bodo Moeller]
1671 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
1672 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
1673 cannot be implicitly activated as part of, e.g., the "AES" alias.
1674 However, please upgrade to OpenSSL 0.9.9[-dev] for
1675 non-experimental use of the ECC ciphersuites to get TLS extension
1676 support, which is required for curve and point format negotiation
1677 to avoid potential handshake problems.
1680 *) Disable rogue ciphersuites:
1682 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1683 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1684 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1686 The latter two were purportedly from
1687 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1690 Also deactivate the remaining ciphersuites from
1691 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1692 unofficial, and the ID has long expired.
1695 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1696 dual-core machines) and other potential thread-safety issues.
1699 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
1700 versions), which is now available for royalty-free use
1701 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
1702 Also, add Camellia TLS ciphersuites from RFC 4132.
1704 To minimize changes between patchlevels in the OpenSSL 0.9.8
1705 series, Camellia remains excluded from compilation unless OpenSSL
1706 is configured with 'enable-camellia'.
1709 *) Disable the padding bug check when compression is in use. The padding
1710 bug check assumes the first packet is of even length, this is not
1711 necessarily true if compresssion is enabled and can result in false
1712 positives causing handshake failure. The actual bug test is ancient
1713 code so it is hoped that implementations will either have fixed it by
1714 now or any which still have the bug do not support compression.
1717 Changes between 0.9.8a and 0.9.8b [04 May 2006]
1719 *) When applying a cipher rule check to see if string match is an explicit
1720 cipher suite and only match that one cipher suite if it is.
1723 *) Link in manifests for VC++ if needed.
1724 [Austin Ziegler <halostatue@gmail.com>]
1726 *) Update support for ECC-based TLS ciphersuites according to
1727 draft-ietf-tls-ecc-12.txt with proposed changes (but without
1728 TLS extensions, which are supported starting with the 0.9.9
1729 branch, not in the OpenSSL 0.9.8 branch).
1732 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
1733 opaque EVP_CIPHER_CTX handling.
1736 *) Fixes and enhancements to zlib compression code. We now only use
1737 "zlib1.dll" and use the default __cdecl calling convention on Win32
1738 to conform with the standards mentioned here:
1739 http://www.zlib.net/DLL_FAQ.txt
1740 Static zlib linking now works on Windows and the new --with-zlib-include
1741 --with-zlib-lib options to Configure can be used to supply the location
1742 of the headers and library. Gracefully handle case where zlib library
1746 *) Several fixes and enhancements to the OID generation code. The old code
1747 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
1748 handle numbers larger than ULONG_MAX, truncated printing and had a
1749 non standard OBJ_obj2txt() behaviour.
1752 *) Add support for building of engines under engine/ as shared libraries
1753 under VC++ build system.
1756 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
1757 Hopefully, we will not see any false combination of paths any more.
1760 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
1762 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1763 (part of SSL_OP_ALL). This option used to disable the
1764 countermeasure against man-in-the-middle protocol-version
1765 rollback in the SSL 2.0 server implementation, which is a bad
1766 idea. (CVE-2005-2969)
1768 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1769 for Information Security, National Institute of Advanced Industrial
1770 Science and Technology [AIST], Japan)]
1772 *) Add two function to clear and return the verify parameter flags.
1775 *) Keep cipherlists sorted in the source instead of sorting them at
1776 runtime, thus removing the need for a lock.
1779 *) Avoid some small subgroup attacks in Diffie-Hellman.
1780 [Nick Mathewson and Ben Laurie]
1782 *) Add functions for well-known primes.
1785 *) Extended Windows CE support.
1786 [Satoshi Nakamura and Andy Polyakov]
1788 *) Initialize SSL_METHOD structures at compile time instead of during
1789 runtime, thus removing the need for a lock.
1792 *) Make PKCS7_decrypt() work even if no certificate is supplied by
1793 attempting to decrypt each encrypted key in turn. Add support to
1797 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
1799 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
1802 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
1805 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
1806 key into the same file any more.
1809 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
1812 *) Add -utf8 command line and config file option to 'ca'.
1813 [Stefan <stf@udoma.org]
1815 *) Removed the macro des_crypt(), as it seems to conflict with some
1816 libraries. Use DES_crypt().
1819 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
1820 involves renaming the source and generated shared-libs for
1821 both. The engines will accept the corrected or legacy ids
1822 ('ncipher' and '4758_cca' respectively) when binding. NB,
1823 this only applies when building 'shared'.
1824 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
1826 *) Add attribute functions to EVP_PKEY structure. Modify
1827 PKCS12_create() to recognize a CSP name attribute and
1828 use it. Make -CSP option work again in pkcs12 utility.
1831 *) Add new functionality to the bn blinding code:
1832 - automatic re-creation of the BN_BLINDING parameters after
1833 a fixed number of uses (currently 32)
1834 - add new function for parameter creation
1835 - introduce flags to control the update behaviour of the
1836 BN_BLINDING parameters
1837 - hide BN_BLINDING structure
1838 Add a second BN_BLINDING slot to the RSA structure to improve
1839 performance when a single RSA object is shared among several
1843 *) Add support for DTLS.
1844 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
1846 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
1847 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
1850 *) Remove buggy and incompletet DH cert support from
1851 ssl/ssl_rsa.c and ssl/s3_both.c
1854 *) Use SHA-1 instead of MD5 as the default digest algorithm for
1855 the apps/openssl applications.
1858 *) Compile clean with "-Wall -Wmissing-prototypes
1859 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
1860 DEBUG_SAFESTACK must also be set.
1863 *) Change ./Configure so that certain algorithms can be disabled by default.
1864 The new counterpiece to "no-xxx" is "enable-xxx".
1866 The patented RC5 and MDC2 algorithms will now be disabled unless
1867 "enable-rc5" and "enable-mdc2", respectively, are specified.
1869 (IDEA remains enabled despite being patented. This is because IDEA
1870 is frequently required for interoperability, and there is no license
1871 fee for non-commercial use. As before, "no-idea" can be used to
1872 avoid this algorithm.)
1876 *) Add processing of proxy certificates (see RFC 3820). This work was
1877 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
1878 EGEE (Enabling Grids for E-science in Europe).
1881 *) RC4 performance overhaul on modern architectures/implementations, such
1882 as Intel P4, IA-64 and AMD64.
1885 *) New utility extract-section.pl. This can be used specify an alternative
1886 section number in a pod file instead of having to treat each file as
1887 a separate case in Makefile. This can be done by adding two lines to the
1890 =for comment openssl_section:XXX
1892 The blank line is mandatory.
1896 *) New arguments -certform, -keyform and -pass for s_client and s_server
1897 to allow alternative format key and certificate files and passphrase
1901 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
1902 update associated structures and add various utility functions.
1904 Add new policy related verify parameters, include policy checking in
1905 standard verify code. Enhance 'smime' application with extra parameters
1906 to support policy checking and print out.
1909 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
1910 Nehemiah processors. These extensions support AES encryption in hardware
1911 as well as RNG (though RNG support is currently disabled).
1912 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
1914 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
1917 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
1918 [Andy Polyakov and a number of other people]
1920 *) Improved PowerPC platform support. Most notably BIGNUM assembler
1921 implementation contributed by IBM.
1922 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
1924 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
1925 exponent rather than 'unsigned long'. There is a corresponding change to
1926 the new 'rsa_keygen' element of the RSA_METHOD structure.
1927 [Jelte Jansen, Geoff Thorpe]
1929 *) Functionality for creating the initial serial number file is now
1930 moved from CA.pl to the 'ca' utility with a new option -create_serial.
1932 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
1933 number file to 1, which is bound to cause problems. To avoid
1934 the problems while respecting compatibility between different 0.9.7
1935 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
1936 CA.pl for serial number initialization. With the new release 0.9.8,
1937 we can fix the problem directly in the 'ca' utility.)
1940 *) Reduced header interdepencies by declaring more opaque objects in
1941 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
1942 give fewer recursive includes, which could break lazy source code - so
1943 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
1944 developers should define this symbol when building and using openssl to
1945 ensure they track the recommended behaviour, interfaces, [etc], but
1946 backwards-compatible behaviour prevails when this isn't defined.
1949 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
1952 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
1953 This will generate a random key of the appropriate length based on the
1954 cipher context. The EVP_CIPHER can provide its own random key generation
1955 routine to support keys of a specific form. This is used in the des and
1956 3des routines to generate a key of the correct parity. Update S/MIME
1957 code to use new functions and hence generate correct parity DES keys.
1958 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
1959 valid (weak or incorrect parity).
1962 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
1963 as looking them up. This is useful when the verified structure may contain
1964 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
1965 present unless the new PKCS7_NO_CRL flag is asserted.
1968 *) Extend ASN1 oid configuration module. It now additionally accepts the
1971 shortName = some long name, 1.2.3.4
1974 *) Reimplemented the BN_CTX implementation. There is now no more static
1975 limitation on the number of variables it can handle nor the depth of the
1976 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
1977 information can now expand as required, and rather than having a single
1978 static array of bignums, BN_CTX now uses a linked-list of such arrays
1979 allowing it to expand on demand whilst maintaining the usefulness of
1980 BN_CTX's "bundling".
1983 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
1984 to allow all RSA operations to function using a single BN_CTX.
1987 *) Preliminary support for certificate policy evaluation and checking. This
1988 is initially intended to pass the tests outlined in "Conformance Testing
1989 of Relying Party Client Certificate Path Processing Logic" v1.07.
1992 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
1993 remained unused and not that useful. A variety of other little bignum
1994 tweaks and fixes have also been made continuing on from the audit (see
1998 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
1999 associated ASN1, EVP and SSL functions and old ASN1 macros.
2002 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2003 and this should never fail. So the return value from the use of
2004 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2005 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2008 *) BN_CTX_get() should return zero-valued bignums, providing the same
2009 initialised value as BN_new().
2010 [Geoff Thorpe, suggested by Ulf Möller]
2012 *) Support for inhibitAnyPolicy certificate extension.
2015 *) An audit of the BIGNUM code is underway, for which debugging code is
2016 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2017 is considered valid when processing BIGNUMs, and causes execution to
2018 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2019 further steps are taken to deliberately pollute unused data in BIGNUM
2020 structures to try and expose faulty code further on. For now, openssl will
2021 (in its default mode of operation) continue to tolerate the inconsistent
2022 forms that it has tolerated in the past, but authors and packagers should
2023 consider trying openssl and their own applications when compiled with
2024 these debugging symbols defined. It will help highlight potential bugs in
2025 their own code, and will improve the test coverage for OpenSSL itself. At
2026 some point, these tighter rules will become openssl's default to improve
2027 maintainability, though the assert()s and other overheads will remain only
2028 in debugging configurations. See bn.h for more details.
2029 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2031 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2032 that can only be obtained through BN_CTX_new() (which implicitly
2033 initialises it). The presence of this function only made it possible
2034 to overwrite an existing structure (and cause memory leaks).
2037 *) Because of the callback-based approach for implementing LHASH as a
2038 template type, lh_insert() adds opaque objects to hash-tables and
2039 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2040 to clean up those corresponding objects before destroying the hash table
2041 (and losing the object pointers). So some over-zealous constifications in
2042 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2043 objects as "const" and the lh_doall[_arg] callback wrappers are not
2044 prototyped to have "const" restrictions on the object pointers they are
2045 given (and so aren't required to cast them away any more).
2048 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2049 (speed) prefers to use its own implementation. The two implementations
2050 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2051 its object type properly exposed (MS_TM) instead of casting to/from "char
2052 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2053 aren't necessarily the greatest nomenclatures - but this is what was used
2054 internally to the implementation so I've used that for now.
2057 *) Ensure that deprecated functions do not get compiled when
2058 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2059 the self-tests were still using deprecated key-generation functions so
2060 these have been updated also.
2063 *) Reorganise PKCS#7 code to separate the digest location functionality
2064 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2065 New function PKCS7_set_digest() to set the digest type for PKCS#7
2066 digestedData type. Add additional code to correctly generate the
2067 digestedData type and add support for this type in PKCS7 initialization
2071 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2072 structure of type "other".
2075 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2076 sure the loop does correctly stop and breaking ("division by zero")
2077 modulus operations are not performed. The (pre-generated) prime
2078 table crypto/bn/bn_prime.h was already correct, but it could not be
2079 re-generated on some platforms because of the "division by zero"
2080 situation in the script.
2081 [Ralf S. Engelschall]
2083 *) Update support for ECC-based TLS ciphersuites according to
2084 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2085 SHA-1 now is only used for "small" curves (where the
2086 representation of a field element takes up to 24 bytes); for
2087 larger curves, the field element resulting from ECDH is directly
2088 used as premaster secret.
2089 [Douglas Stebila (Sun Microsystems Laboratories)]
2091 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2092 curve secp160r1 to the tests.
2093 [Douglas Stebila (Sun Microsystems Laboratories)]
2095 *) Add the possibility to load symbols globally with DSO.
2096 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2098 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2099 control of the error stack.
2102 *) Add support for STORE in ENGINE.
2105 *) Add the STORE type. The intention is to provide a common interface
2106 to certificate and key stores, be they simple file-based stores, or
2107 HSM-type store, or LDAP stores, or...
2108 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2111 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2112 pass a list of arguments to any function as well as provide a way
2113 for a function to pass data back to the caller.
2116 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2117 works like BUF_strdup() but can be used to duplicate a portion of
2118 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2122 *) Add the function sk_find_ex() which works like sk_find(), but will
2123 return an index to an element even if an exact match couldn't be
2124 found. The index is guaranteed to point at the element where the
2125 searched-for key would be inserted to preserve sorting order.
2128 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2129 takes an extra flags argument for optional functionality. Currently,
2130 the following flags are defined:
2132 OBJ_BSEARCH_VALUE_ON_NOMATCH
2133 This one gets OBJ_bsearch_ex() to return a pointer to the first
2134 element where the comparing function returns a negative or zero
2137 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2138 This one gets OBJ_bsearch_ex() to return a pointer to the first
2139 element where the comparing function returns zero. This is useful
2140 if there are more than one element where the comparing function
2144 *) Make it possible to create self-signed certificates with 'openssl ca'
2145 in such a way that the self-signed certificate becomes part of the
2146 CA database and uses the same mechanisms for serial number generation
2147 as all other certificate signing. The new flag '-selfsign' enables
2148 this functionality. Adapt CA.sh and CA.pl.in.
2151 *) Add functionality to check the public key of a certificate request
2152 against a given private. This is useful to check that a certificate
2153 request can be signed by that key (self-signing).
2156 *) Make it possible to have multiple active certificates with the same
2157 subject in the CA index file. This is done only if the keyword
2158 'unique_subject' is set to 'no' in the main CA section (default
2159 if 'CA_default') of the configuration file. The value is saved
2160 with the database itself in a separate index attribute file,
2161 named like the index file with '.attr' appended to the name.
2164 *) Generate muti valued AVAs using '+' notation in config files for
2168 *) Support for nameConstraints certificate extension.
2171 *) Support for policyConstraints certificate extension.
2174 *) Support for policyMappings certificate extension.
2177 *) Make sure the default DSA_METHOD implementation only uses its
2178 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2179 and change its own handlers to be NULL so as to remove unnecessary
2180 indirection. This lets alternative implementations fallback to the
2181 default implementation more easily.
2184 *) Support for directoryName in GeneralName related extensions
2188 *) Make it possible to link applications using Makefile.shared.
2189 Make that possible even when linking against static libraries!
2192 *) Support for single pass processing for S/MIME signing. This now
2193 means that S/MIME signing can be done from a pipe, in addition
2194 cleartext signing (multipart/signed type) is effectively streaming
2195 and the signed data does not need to be all held in memory.
2197 This is done with a new flag PKCS7_STREAM. When this flag is set
2198 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2199 is done after the data is output (and digests calculated) in
2200 SMIME_write_PKCS7().
2203 *) Add full support for -rpath/-R, both in shared libraries and
2204 applications, at least on the platforms where it's known how
2208 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2209 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2210 will now compute a table of multiples of the generator that
2211 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2212 faster (notably in the case of a single point multiplication,
2213 scalar * generator).
2214 [Nils Larsch, Bodo Moeller]
2216 *) IPv6 support for certificate extensions. The various extensions
2217 which use the IP:a.b.c.d can now take IPv6 addresses using the
2218 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2222 *) Added an ENGINE that implements RSA by performing private key
2223 exponentiations with the GMP library. The conversions to and from
2224 GMP's mpz_t format aren't optimised nor are any montgomery forms
2225 cached, and on x86 it appears OpenSSL's own performance has caught up.
2226 However there are likely to be other architectures where GMP could
2227 provide a boost. This ENGINE is not built in by default, but it can be
2228 specified at Configure time and should be accompanied by the necessary
2229 linker additions, eg;
2230 ./config -DOPENSSL_USE_GMP -lgmp
2233 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2234 testing availability of engines with "-t" - the old behaviour is
2235 produced by increasing the feature's verbosity with "-tt".
2238 *) ECDSA routines: under certain error conditions uninitialized BN objects
2239 could be freed. Solution: make sure initialization is performed early
2240 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2244 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2245 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2246 software implementations. For DSA and DH, parameter generation can
2247 also be overriden by providing the appropriate method callbacks.
2250 *) Change the "progress" mechanism used in key-generation and
2251 primality testing to functions that take a new BN_GENCB pointer in
2252 place of callback/argument pairs. The new API functions have "_ex"
2253 postfixes and the older functions are reimplemented as wrappers for
2254 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2255 declarations of the old functions to help (graceful) attempts to
2256 migrate to the new functions. Also, the new key-generation API
2257 functions operate on a caller-supplied key-structure and return
2258 success/failure rather than returning a key or NULL - this is to
2259 help make "keygen" another member function of RSA_METHOD etc.
2261 Example for using the new callback interface:
2263 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2267 BN_GENCB_set(&my_cb, my_callback, my_arg);
2269 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2270 /* For the meaning of a, b in calls to my_callback(), see the
2271 * documentation of the function that calls the callback.
2272 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2273 * my_callback should return 1 if it wants BN_is_prime_ex()
2274 * to continue, or 0 to stop.
2279 *) Change the ZLIB compression method to be stateful, and make it
2280 available to TLS with the number defined in
2281 draft-ietf-tls-compression-04.txt.
2284 *) Add the ASN.1 structures and functions for CertificatePair, which
2285 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2287 CertificatePair ::= SEQUENCE {
2288 forward [0] Certificate OPTIONAL,
2289 reverse [1] Certificate OPTIONAL,
2290 -- at least one of the pair shall be present -- }
2292 Also implement the PEM functions to read and write certificate
2293 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2295 This needed to be defined, mostly for the sake of the LDAP
2296 attribute crossCertificatePair, but may prove useful elsewhere as
2300 *) Make it possible to inhibit symlinking of shared libraries in
2301 Makefile.shared, for Cygwin's sake.
2304 *) Extend the BIGNUM API by creating a function
2305 void BN_set_negative(BIGNUM *a, int neg);
2306 and a macro that behave like
2307 int BN_is_negative(const BIGNUM *a);
2309 to avoid the need to access 'a->neg' directly in applications.
2312 *) Implement fast modular reduction for pseudo-Mersenne primes
2313 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2314 EC_GROUP_new_curve_GFp() will now automatically use this
2316 [Nils Larsch <nla@trustcenter.de>]
2318 *) Add new lock type (CRYPTO_LOCK_BN).
2321 *) Change the ENGINE framework to automatically load engines
2322 dynamically from specific directories unless they could be
2323 found to already be built in or loaded. Move all the
2324 current engines except for the cryptodev one to a new
2326 The engines in engines/ are built as shared libraries if
2327 the "shared" options was given to ./Configure or ./config.
2328 Otherwise, they are inserted in libcrypto.a.
2329 /usr/local/ssl/engines is the default directory for dynamic
2330 engines, but that can be overriden at configure time through
2331 the usual use of --prefix and/or --openssldir, and at run
2332 time with the environment variable OPENSSL_ENGINES.
2333 [Geoff Thorpe and Richard Levitte]
2335 *) Add Makefile.shared, a helper makefile to build shared
2336 libraries. Addapt Makefile.org.
2339 *) Add version info to Win32 DLLs.
2340 [Peter 'Luna' Runestig" <peter@runestig.com>]
2342 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2343 can be added using this API to created arbitrary PKCS#12
2344 files while avoiding the low level API.
2346 New options to PKCS12_create(), key or cert can be NULL and
2347 will then be omitted from the output file. The encryption
2348 algorithm NIDs can be set to -1 for no encryption, the mac
2349 iteration count can be set to 0 to omit the mac.
2351 Enhance pkcs12 utility by making the -nokeys and -nocerts
2352 options work when creating a PKCS#12 file. New option -nomac
2353 to omit the mac, NONE can be set for an encryption algorithm.
2354 New code is modified to use the enhanced PKCS12_create()
2355 instead of the low level API.
2358 *) Extend ASN1 encoder to support indefinite length constructed
2359 encoding. This can output sequences tags and octet strings in
2360 this form. Modify pk7_asn1.c to support indefinite length
2361 encoding. This is experimental and needs additional code to
2362 be useful, such as an ASN1 bio and some enhanced streaming
2365 Extend template encode functionality so that tagging is passed
2366 down to the template encoder.
2369 *) Let 'openssl req' fail if an argument to '-newkey' is not
2370 recognized instead of using RSA as a default.
2373 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2374 As these are not official, they are not included in "ALL";
2375 the "ECCdraft" ciphersuite group alias can be used to select them.
2376 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2378 *) Add ECDH engine support.
2379 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2381 *) Add ECDH in new directory crypto/ecdh/.
2382 [Douglas Stebila (Sun Microsystems Laboratories)]
2384 *) Let BN_rand_range() abort with an error after 100 iterations
2385 without success (which indicates a broken PRNG).
2388 *) Change BN_mod_sqrt() so that it verifies that the input value
2389 is really the square of the return value. (Previously,
2390 BN_mod_sqrt would show GIGO behaviour.)
2393 *) Add named elliptic curves over binary fields from X9.62, SECG,
2394 and WAP/WTLS; add OIDs that were still missing.
2396 [Sheueling Chang Shantz and Douglas Stebila
2397 (Sun Microsystems Laboratories)]
2399 *) Extend the EC library for elliptic curves over binary fields
2400 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2403 EC_GF2m_simple_method
2407 EC_GROUP_new_curve_GF2m
2408 EC_GROUP_set_curve_GF2m
2409 EC_GROUP_get_curve_GF2m
2410 EC_POINT_set_affine_coordinates_GF2m
2411 EC_POINT_get_affine_coordinates_GF2m
2412 EC_POINT_set_compressed_coordinates_GF2m
2414 Point compression for binary fields is disabled by default for
2415 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2418 As binary polynomials are represented as BIGNUMs, various members
2419 of the EC_GROUP and EC_POINT data structures can be shared
2420 between the implementations for prime fields and binary fields;
2421 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2422 are essentially identical to their ..._GFp counterparts.
2423 (For simplicity, the '..._GFp' prefix has been dropped from
2424 various internal method names.)
2426 An internal 'field_div' method (similar to 'field_mul' and
2427 'field_sqr') has been added; this is used only for binary fields.
2429 [Sheueling Chang Shantz and Douglas Stebila
2430 (Sun Microsystems Laboratories)]
2432 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2433 through methods ('mul', 'precompute_mult').
2435 The generic implementations (now internally called 'ec_wNAF_mul'
2436 and 'ec_wNAF_precomputed_mult') remain the default if these
2437 methods are undefined.
2439 [Sheueling Chang Shantz and Douglas Stebila
2440 (Sun Microsystems Laboratories)]
2442 *) New function EC_GROUP_get_degree, which is defined through
2443 EC_METHOD. For curves over prime fields, this returns the bit
2444 length of the modulus.
2446 [Sheueling Chang Shantz and Douglas Stebila
2447 (Sun Microsystems Laboratories)]
2449 *) New functions EC_GROUP_dup, EC_POINT_dup.
2450 (These simply call ..._new and ..._copy).
2452 [Sheueling Chang Shantz and Douglas Stebila
2453 (Sun Microsystems Laboratories)]
2455 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2456 Polynomials are represented as BIGNUMs (where the sign bit is not
2457 used) in the following functions [macros]:
2460 BN_GF2m_sub [= BN_GF2m_add]
2461 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2462 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2463 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2465 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2466 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2467 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2468 BN_GF2m_cmp [= BN_ucmp]
2470 (Note that only the 'mod' functions are actually for fields GF(2^m).
2471 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2473 For some functions, an the irreducible polynomial defining a
2474 field can be given as an 'unsigned int[]' with strictly
2475 decreasing elements giving the indices of those bits that are set;
2476 i.e., p[] represents the polynomial
2477 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2479 p[0] > p[1] > ... > p[k] = 0.
2480 This applies to the following functions:
2485 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2486 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2488 BN_GF2m_mod_sqrt_arr
2489 BN_GF2m_mod_solve_quad_arr
2493 Conversion can be performed by the following functions:
2498 bntest.c has additional tests for binary polynomial arithmetic.
2500 Two implementations for BN_GF2m_mod_div() are available.
2501 The default algorithm simply uses BN_GF2m_mod_inv() and
2502 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2503 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2504 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2506 [Sheueling Chang Shantz and Douglas Stebila
2507 (Sun Microsystems Laboratories)]
2509 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2510 functionality is disabled at compile-time.
2511 [Douglas Stebila <douglas.stebila@sun.com>]
2513 *) Change default behaviour of 'openssl asn1parse' so that more
2514 information is visible when viewing, e.g., a certificate:
2516 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2517 mode the content of non-printable OCTET STRINGs is output in a
2518 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2519 avoid the appearance of a printable string.
2520 [Nils Larsch <nla@trustcenter.de>]
2522 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2524 EC_GROUP_set_asn1_flag()
2525 EC_GROUP_get_asn1_flag()
2526 EC_GROUP_set_point_conversion_form()
2527 EC_GROUP_get_point_conversion_form()
2528 These control ASN1 encoding details:
2529 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2530 has been set to OPENSSL_EC_NAMED_CURVE.
2531 - Points are encoded in uncompressed form by default; options for
2532 asn1_for are as for point2oct, namely
2533 POINT_CONVERSION_COMPRESSED
2534 POINT_CONVERSION_UNCOMPRESSED
2535 POINT_CONVERSION_HYBRID
2537 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2540 EC_GROUP_get0_seed()
2541 EC_GROUP_get_seed_len()
2542 This is used only for ASN1 purposes (so far).
2543 [Nils Larsch <nla@trustcenter.de>]
2545 *) Add 'field_type' member to EC_METHOD, which holds the NID
2546 of the appropriate field type OID. The new function
2547 EC_METHOD_get_field_type() returns this value.
2548 [Nils Larsch <nla@trustcenter.de>]
2553 EC_POINT_point2hex()
2554 EC_POINT_hex2point()
2555 providing useful interfaces to EC_POINT_point2oct() and
2556 EC_POINT_oct2point().
2557 [Nils Larsch <nla@trustcenter.de>]
2559 *) Change internals of the EC library so that the functions
2560 EC_GROUP_set_generator()
2561 EC_GROUP_get_generator()
2562 EC_GROUP_get_order()
2563 EC_GROUP_get_cofactor()
2564 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2565 to methods, which would lead to unnecessary code duplication when
2566 adding different types of curves.
2567 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2569 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2570 arithmetic, and such that modified wNAFs are generated
2571 (which avoid length expansion in many cases).
2574 *) Add a function EC_GROUP_check_discriminant() (defined via
2575 EC_METHOD) that verifies that the curve discriminant is non-zero.
2577 Add a function EC_GROUP_check() that makes some sanity tests
2578 on a EC_GROUP, its generator and order. This includes
2579 EC_GROUP_check_discriminant().
2580 [Nils Larsch <nla@trustcenter.de>]
2582 *) Add ECDSA in new directory crypto/ecdsa/.
2584 Add applications 'openssl ecparam' and 'openssl ecdsa'
2585 (these are based on 'openssl dsaparam' and 'openssl dsa').
2587 ECDSA support is also included in various other files across the
2588 library. Most notably,
2589 - 'openssl req' now has a '-newkey ecdsa:file' option;
2590 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2591 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2592 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2593 them suitable for ECDSA where domain parameters must be
2594 extracted before the specific public key;
2595 - ECDSA engine support has been added.
2596 [Nils Larsch <nla@trustcenter.de>]
2598 *) Include some named elliptic curves, and add OIDs from X9.62,
2599 SECG, and WAP/WTLS. Each curve can be obtained from the new
2601 EC_GROUP_new_by_curve_name(),
2602 and the list of available named curves can be obtained with
2603 EC_get_builtin_curves().
2604 Also add a 'curve_name' member to EC_GROUP objects, which can be
2606 EC_GROUP_set_curve_name()
2607 EC_GROUP_get_curve_name()
2608 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2610 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2611 was actually never needed) and in BN_mul(). The removal in BN_mul()
2612 required a small change in bn_mul_part_recursive() and the addition
2613 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2614 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2615 bn_sub_words() and bn_add_words() except they take arrays with
2619 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2621 *) Cleanse PEM buffers before freeing them since they may contain
2623 [Benjamin Bennett <ben@psc.edu>]
2625 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2626 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2627 authentication-only ciphersuites.
2630 *) Since AES128 and AES256 share a single mask bit in the logic of
2631 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2632 kludge to work properly if AES128 is available and AES256 isn't.
2635 *) Expand security boundary to match 1.1.1 module.
2638 *) Remove redundant features: hash file source, editing of test vectors
2639 modify fipsld to use external fips_premain.c signature.
2642 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2643 run algorithm test programs.
2646 *) Make algorithm test programs more tolerant of whitespace.
2649 *) Have SSL/TLS server implementation tolerate "mismatched" record
2650 protocol version while receiving ClientHello even if the
2651 ClientHello is fragmented. (The server can't insist on the
2652 particular protocol version it has chosen before the ServerHello
2653 message has informed the client about his choice.)
2656 *) Load error codes if they are not already present instead of using a
2657 static variable. This allows them to be cleanly unloaded and reloaded.
2660 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2662 *) Introduce limits to prevent malicious keys being able to
2663 cause a denial of service. (CVE-2006-2940)
2664 [Steve Henson, Bodo Moeller]
2666 *) Fix ASN.1 parsing of certain invalid structures that can result
2667 in a denial of service. (CVE-2006-2937) [Steve Henson]
2669 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2670 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2672 *) Fix SSL client code which could crash if connecting to a
2673 malicious SSLv2 server. (CVE-2006-4343)
2674 [Tavis Ormandy and Will Drewry, Google Security Team]
2676 *) Change ciphersuite string processing so that an explicit
2677 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
2678 will no longer include "AES128-SHA"), and any other similar
2679 ciphersuite (same bitmap) from *other* protocol versions (so that
2680 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
2681 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
2682 changes from 0.9.8b and 0.9.8d.
2685 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
2687 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2688 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2690 *) Change the Unix randomness entropy gathering to use poll() when
2691 possible instead of select(), since the latter has some
2692 undesirable limitations.
2693 [Darryl Miles via Richard Levitte and Bodo Moeller]
2695 *) Disable rogue ciphersuites:
2697 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2698 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2699 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2701 The latter two were purportedly from
2702 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2705 Also deactive the remaining ciphersuites from
2706 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2707 unofficial, and the ID has long expired.
2710 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2711 dual-core machines) and other potential thread-safety issues.
2714 Changes between 0.9.7i and 0.9.7j [04 May 2006]
2716 *) Adapt fipsld and the build system to link against the validated FIPS
2717 module in FIPS mode.
2720 *) Fixes for VC++ 2005 build under Windows.
2723 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
2724 from a Windows bash shell such as MSYS. It is autodetected from the
2725 "config" script when run from a VC++ environment. Modify standard VC++
2726 build to use fipscanister.o from the GNU make build.
2729 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
2731 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
2732 The value now differs depending on if you build for FIPS or not.
2733 BEWARE! A program linked with a shared FIPSed libcrypto can't be
2734 safely run with a non-FIPSed libcrypto, as it may crash because of
2735 the difference induced by this change.
2738 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
2740 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2741 (part of SSL_OP_ALL). This option used to disable the
2742 countermeasure against man-in-the-middle protocol-version
2743 rollback in the SSL 2.0 server implementation, which is a bad
2744 idea. (CVE-2005-2969)
2746 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2747 for Information Security, National Institute of Advanced Industrial
2748 Science and Technology [AIST], Japan)]
2750 *) Minimal support for X9.31 signatures and PSS padding modes. This is
2751 mainly for FIPS compliance and not fully integrated at this stage.
2754 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
2755 the exponentiation using a fixed-length exponent. (Otherwise,
2756 the information leaked through timing could expose the secret key
2757 after many signatures; cf. Bleichenbacher's attack on DSA with
2761 *) Make a new fixed-window mod_exp implementation the default for
2762 RSA, DSA, and DH private-key operations so that the sequence of
2763 squares and multiplies and the memory access pattern are
2764 independent of the particular secret key. This will mitigate
2765 cache-timing and potential related attacks.
2767 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
2768 and this is automatically used by BN_mod_exp_mont() if the new flag
2769 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
2770 will use this BN flag for private exponents unless the flag
2771 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
2772 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
2774 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
2776 *) Change the client implementation for SSLv23_method() and
2777 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
2778 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
2779 (Previously, the SSL 2.0 backwards compatible Client Hello
2780 message format would be used even with SSL_OP_NO_SSLv2.)
2783 *) Add support for smime-type MIME parameter in S/MIME messages which some
2787 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
2788 a threadsafe manner. Modify rsa code to use new function and add calls
2789 to dsa and dh code (which had race conditions before).
2792 *) Include the fixed error library code in the C error file definitions
2793 instead of fixing them up at runtime. This keeps the error code
2794 structures constant.
2797 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
2799 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
2802 *) Fixes for newer kerberos headers. NB: the casts are needed because
2803 the 'length' field is signed on one version and unsigned on another
2804 with no (?) obvious way to tell the difference, without these VC++
2805 complains. Also the "definition" of FAR (blank) is no longer included
2806 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
2807 some needed definitions.
2810 *) Undo Cygwin change.
2813 *) Added support for proxy certificates according to RFC 3820.
2814 Because they may be a security thread to unaware applications,
2815 they must be explicitely allowed in run-time. See
2816 docs/HOWTO/proxy_certificates.txt for further information.
2819 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
2821 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
2822 server and client random values. Previously
2823 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
2824 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
2826 This change has negligible security impact because:
2828 1. Server and client random values still have 24 bytes of pseudo random
2831 2. Server and client random values are sent in the clear in the initial
2834 3. The master secret is derived using the premaster secret (48 bytes in
2835 size for static RSA ciphersuites) as well as client server and random
2838 The OpenSSL team would like to thank the UK NISCC for bringing this issue
2841 [Stephen Henson, reported by UK NISCC]
2843 *) Use Windows randomness collection on Cygwin.
2846 *) Fix hang in EGD/PRNGD query when communication socket is closed
2847 prematurely by EGD/PRNGD.
2848 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
2850 *) Prompt for pass phrases when appropriate for PKCS12 input format.
2853 *) Back-port of selected performance improvements from development
2854 branch, as well as improved support for PowerPC platforms.
2857 *) Add lots of checks for memory allocation failure, error codes to indicate
2858 failure and freeing up memory if a failure occurs.
2859 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
2861 *) Add new -passin argument to dgst.
2864 *) Perform some character comparisons of different types in X509_NAME_cmp:
2865 this is needed for some certificates that reencode DNs into UTF8Strings
2866 (in violation of RFC3280) and can't or wont issue name rollover
2870 *) Make an explicit check during certificate validation to see that
2871 the CA setting in each certificate on the chain is correct. As a
2872 side effect always do the following basic checks on extensions,
2873 not just when there's an associated purpose to the check:
2875 - if there is an unhandled critical extension (unless the user
2876 has chosen to ignore this fault)
2877 - if the path length has been exceeded (if one is set at all)
2878 - that certain extensions fit the associated purpose (if one has
2882 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
2884 *) Avoid a race condition when CRLs are checked in a multi threaded
2885 environment. This would happen due to the reordering of the revoked
2886 entries during signature checking and serial number lookup. Now the
2887 encoding is cached and the serial number sort performed under a lock.
2888 Add new STACK function sk_is_sorted().
2891 *) Add Delta CRL to the extension code.
2894 *) Various fixes to s3_pkt.c so alerts are sent properly.
2895 [David Holmes <d.holmes@f5.com>]
2897 *) Reduce the chances of duplicate issuer name and serial numbers (in
2898 violation of RFC3280) using the OpenSSL certificate creation utilities.
2899 This is done by creating a random 64 bit value for the initial serial
2900 number when a serial number file is created or when a self signed
2901 certificate is created using 'openssl req -x509'. The initial serial
2902 number file is created using 'openssl x509 -next_serial' in CA.pl
2903 rather than being initialized to 1.
2906 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
2908 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
2909 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
2910 [Joe Orton, Steve Henson]
2912 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
2914 [Joe Orton, Steve Henson]
2916 *) Make it possible to have multiple active certificates with the same
2917 subject in the CA index file. This is done only if the keyword
2918 'unique_subject' is set to 'no' in the main CA section (default
2919 if 'CA_default') of the configuration file. The value is saved
2920 with the database itself in a separate index attribute file,
2921 named like the index file with '.attr' appended to the name.
2924 *) X509 verify fixes. Disable broken certificate workarounds when
2925 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
2926 keyUsage extension present. Don't accept CRLs with unhandled critical
2927 extensions: since verify currently doesn't process CRL extensions this
2928 rejects a CRL with *any* critical extensions. Add new verify error codes
2932 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
2933 A clarification of RFC2560 will require the use of OCTET STRINGs and
2934 some implementations cannot handle the current raw format. Since OpenSSL
2935 copies and compares OCSP nonces as opaque blobs without any attempt at
2936 parsing them this should not create any compatibility issues.
2939 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
2940 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
2941 this HMAC (and other) operations are several times slower than OpenSSL
2945 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
2946 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
2948 *) Use the correct content when signing type "other".
2951 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
2953 *) Fix various bugs revealed by running the NISCC test suite:
2955 Stop out of bounds reads in the ASN1 code when presented with
2956 invalid tags (CVE-2003-0543 and CVE-2003-0544).
2958 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
2960 If verify callback ignores invalid public key errors don't try to check
2961 certificate signature with the NULL public key.
2965 *) New -ignore_err option in ocsp application to stop the server
2966 exiting on the first error in a request.
2969 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
2970 if the server requested one: as stated in TLS 1.0 and SSL 3.0
2974 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
2975 extra data after the compression methods not only for TLS 1.0
2976 but also for SSL 3.0 (as required by the specification).
2977 [Bodo Moeller; problem pointed out by Matthias Loepfe]
2979 *) Change X509_certificate_type() to mark the key as exported/exportable
2980 when it's 512 *bits* long, not 512 bytes.
2983 *) Change AES_cbc_encrypt() so it outputs exact multiple of
2984 blocks during encryption.
2987 *) Various fixes to base64 BIO and non blocking I/O. On write
2988 flushes were not handled properly if the BIO retried. On read
2989 data was not being buffered properly and had various logic bugs.
2990 This also affects blocking I/O when the data being decoded is a
2994 *) Various S/MIME bugfixes and compatibility changes:
2995 output correct application/pkcs7 MIME type if
2996 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
2997 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
2998 of files as .eml work). Correctly handle very long lines in MIME
3002 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3004 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3005 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3006 a protocol version number mismatch like a decryption error
3007 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3010 *) Turn on RSA blinding by default in the default implementation
3011 to avoid a timing attack. Applications that don't want it can call
3012 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3013 They would be ill-advised to do so in most cases.
3014 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3016 *) Change RSA blinding code so that it works when the PRNG is not
3017 seeded (in this case, the secret RSA exponent is abused as
3018 an unpredictable seed -- if it is not unpredictable, there
3019 is no point in blinding anyway). Make RSA blinding thread-safe
3020 by remembering the creator's thread ID in rsa->blinding and
3021 having all other threads use local one-time blinding factors
3022 (this requires more computation than sharing rsa->blinding, but
3023 avoids excessive locking; and if an RSA object is not shared
3024 between threads, blinding will still be very fast).
3027 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3028 ENGINE as defaults for all supported algorithms irrespective of
3029 the 'flags' parameter. 'flags' is now honoured, so applications
3030 should make sure they are passing it correctly.
3033 *) Target "mingw" now allows native Windows code to be generated in
3034 the Cygwin environment as well as with the MinGW compiler.
3037 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3039 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3040 via timing by performing a MAC computation even if incorrrect
3041 block cipher padding has been found. This is a countermeasure
3042 against active attacks where the attacker has to distinguish
3043 between bad padding and a MAC verification error. (CVE-2003-0078)
3045 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3046 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3047 Martin Vuagnoux (EPFL, Ilion)]
3049 *) Make the no-err option work as intended. The intention with no-err
3050 is not to have the whole error stack handling routines removed from
3051 libcrypto, it's only intended to remove all the function name and
3052 reason texts, thereby removing some of the footprint that may not
3053 be interesting if those errors aren't displayed anyway.
3055 NOTE: it's still possible for any application or module to have it's
3056 own set of error texts inserted. The routines are there, just not
3057 used by default when no-err is given.
3060 *) Add support for FreeBSD on IA64.
3061 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3063 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3064 Kerberos function mit_des_cbc_cksum(). Before this change,
3065 the value returned by DES_cbc_cksum() was like the one from
3066 mit_des_cbc_cksum(), except the bytes were swapped.
3067 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3069 *) Allow an application to disable the automatic SSL chain building.
3070 Before this a rather primitive chain build was always performed in
3071 ssl3_output_cert_chain(): an application had no way to send the
3072 correct chain if the automatic operation produced an incorrect result.
3074 Now the chain builder is disabled if either:
3076 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3078 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3080 The reasoning behind this is that an application would not want the
3081 auto chain building to take place if extra chain certificates are
3082 present and it might also want a means of sending no additional
3083 certificates (for example the chain has two certificates and the
3087 *) Add the possibility to build without the ENGINE framework.
3088 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3090 *) Under Win32 gmtime() can return NULL: check return value in
3091 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3094 *) DSA routines: under certain error conditions uninitialized BN objects
3095 could be freed. Solution: make sure initialization is performed early
3096 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3097 Nils Larsch <nla@trustcenter.de> via PR#459)
3100 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3101 checked on reconnect on the client side, therefore session resumption
3102 could still fail with a "ssl session id is different" error. This
3103 behaviour is masked when SSL_OP_ALL is used due to
3104 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3105 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3106 followup to PR #377.
3109 *) IA-32 assembler support enhancements: unified ELF targets, support
3110 for SCO/Caldera platforms, fix for Cygwin shared build.
3113 *) Add support for FreeBSD on sparc64. As a consequence, support for
3114 FreeBSD on non-x86 processors is separate from x86 processors on
3115 the config script, much like the NetBSD support.
3116 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3118 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3120 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3123 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3124 code (06) was taken as the first octet of the session ID and the last
3125 octet was ignored consequently. As a result SSLv2 client side session
3126 caching could not have worked due to the session ID mismatch between
3128 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3132 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3133 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3137 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3138 seems that in spite of existing for more than a year, many application
3139 author have done nothing to provide the necessary callbacks, which
3140 means that this particular engine will not work properly anywhere.
3141 This is a very unfortunate situation which forces us, in the name
3142 of usability, to give the hw_ncipher.c a static lock, which is part
3144 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3145 appear in 0.9.8 or later. We EXPECT application authors to have
3146 dealt properly with this when 0.9.8 is released (unless we actually
3147 make such changes in the libcrypto locking code that changes will
3148 have to be made anyway).
3151 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3152 octets have been read, EOF or an error occurs. Without this change
3153 some truncated ASN1 structures will not produce an error.
3156 *) Disable Heimdal support, since it hasn't been fully implemented.
3157 Still give the possibility to force the use of Heimdal, but with
3158 warnings and a request that patches get sent to openssl-dev.
3161 *) Add the VC-CE target, introduce the WINCE sysname, and add
3162 INSTALL.WCE and appropriate conditionals to make it build.
3163 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3165 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3166 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3167 edit numbers of the version.
3168 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3170 *) Introduce safe string copy and catenation functions
3171 (BUF_strlcpy() and BUF_strlcat()).
3172 [Ben Laurie (CHATS) and Richard Levitte]
3174 *) Avoid using fixed-size buffers for one-line DNs.
3175 [Ben Laurie (CHATS)]
3177 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3178 resizing buffers containing secrets, and use where appropriate.
3179 [Ben Laurie (CHATS)]
3181 *) Avoid using fixed size buffers for configuration file location.
3182 [Ben Laurie (CHATS)]
3184 *) Avoid filename truncation for various CA files.
3185 [Ben Laurie (CHATS)]
3187 *) Use sizeof in preference to magic numbers.
3188 [Ben Laurie (CHATS)]
3190 *) Avoid filename truncation in cert requests.
3191 [Ben Laurie (CHATS)]
3193 *) Add assertions to check for (supposedly impossible) buffer
3195 [Ben Laurie (CHATS)]
3197 *) Don't cache truncated DNS entries in the local cache (this could
3198 potentially lead to a spoofing attack).
3199 [Ben Laurie (CHATS)]
3201 *) Fix various buffers to be large enough for hex/decimal
3202 representations in a platform independent manner.
3203 [Ben Laurie (CHATS)]
3205 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3206 resizing buffers containing secrets, and use where appropriate.
3207 [Ben Laurie (CHATS)]
3209 *) Add BIO_indent() to avoid much slightly worrying code to do
3211 [Ben Laurie (CHATS)]
3213 *) Convert sprintf()/BIO_puts() to BIO_printf().
3214 [Ben Laurie (CHATS)]
3216 *) buffer_gets() could terminate with the buffer only half
3218 [Ben Laurie (CHATS)]
3220 *) Add assertions to prevent user-supplied crypto functions from
3221 overflowing internal buffers by having large block sizes, etc.
3222 [Ben Laurie (CHATS)]
3224 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3226 [Ben Laurie (CHATS)]
3228 *) Eliminate unused copy of key in RC4.
3229 [Ben Laurie (CHATS)]
3231 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3232 [Ben Laurie (CHATS)]
3234 *) Fix off-by-one error in EGD path.
3235 [Ben Laurie (CHATS)]
3237 *) If RANDFILE path is too long, ignore instead of truncating.
3238 [Ben Laurie (CHATS)]
3240 *) Eliminate unused and incorrectly sized X.509 structure
3242 [Ben Laurie (CHATS)]
3244 *) Eliminate unused and dangerous function knumber().
3245 [Ben Laurie (CHATS)]
3247 *) Eliminate unused and dangerous structure, KSSL_ERR.
3248 [Ben Laurie (CHATS)]
3250 *) Protect against overlong session ID context length in an encoded
3251 session object. Since these are local, this does not appear to be
3253 [Ben Laurie (CHATS)]
3255 *) Change from security patch (see 0.9.6e below) that did not affect
3256 the 0.9.6 release series:
3258 Remote buffer overflow in SSL3 protocol - an attacker could
3259 supply an oversized master key in Kerberos-enabled versions.
3261 [Ben Laurie (CHATS)]
3263 *) Change the SSL kerb5 codes to match RFC 2712.
3266 *) Make -nameopt work fully for req and add -reqopt switch.
3267 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3269 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3270 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3272 *) Make sure tests can be performed even if the corresponding algorithms
3273 have been removed entirely. This was also the last step to make
3274 OpenSSL compilable with DJGPP under all reasonable conditions.
3275 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3277 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3278 to allow version independent disabling of normally unselected ciphers,
3279 which may be activated as a side-effect of selecting a single cipher.
3281 (E.g., cipher list string "RSA" enables ciphersuites that are left
3282 out of "ALL" because they do not provide symmetric encryption.
3283 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3284 [Lutz Jaenicke, Bodo Moeller]
3286 *) Add appropriate support for separate platform-dependent build
3287 directories. The recommended way to make a platform-dependent
3288 build directory is the following (tested on Linux), maybe with
3291 # Place yourself outside of the OpenSSL source tree. In
3292 # this example, the environment variable OPENSSL_SOURCE
3293 # is assumed to contain the absolute OpenSSL source directory.
3294 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3295 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3296 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3297 mkdir -p `dirname $F`
3298 ln -s $OPENSSL_SOURCE/$F $F
3301 To be absolutely sure not to disturb the source tree, a "make clean"
3302 is a good thing. If it isn't successfull, don't worry about it,
3303 it probably means the source directory is very clean.
3306 *) Make sure any ENGINE control commands make local copies of string
3307 pointers passed to them whenever necessary. Otherwise it is possible
3308 the caller may have overwritten (or deallocated) the original string
3309 data when a later ENGINE operation tries to use the stored values.
3310 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3312 *) Improve diagnostics in file reading and command-line digests.
3313 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3315 *) Add AES modes CFB and OFB to the object database. Correct an
3316 error in AES-CFB decryption.
3319 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3320 allows existing EVP_CIPHER_CTX structures to be reused after
3321 calling EVP_*Final(). This behaviour is used by encryption
3322 BIOs and some applications. This has the side effect that
3323 applications must explicitly clean up cipher contexts with
3324 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3327 *) Check the values of dna and dnb in bn_mul_recursive before calling
3328 bn_mul_comba (a non zero value means the a or b arrays do not contain
3329 n2 elements) and fallback to bn_mul_normal if either is not zero.
3332 *) Fix escaping of non-ASCII characters when using the -subj option
3333 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3336 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3337 form for "surname", serialNumber has no short form.
3338 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3339 therefore remove "mail" short name for "internet 7".
3340 The OID for unique identifiers in X509 certificates is
3341 x500UniqueIdentifier, not uniqueIdentifier.
3342 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3345 *) Add an "init" command to the ENGINE config module and auto initialize
3346 ENGINEs. Without any "init" command the ENGINE will be initialized
3347 after all ctrl commands have been executed on it. If init=1 the
3348 ENGINE is initailized at that point (ctrls before that point are run
3349 on the uninitialized ENGINE and after on the initialized one). If
3350 init=0 then the ENGINE will not be iniatialized at all.
3353 *) Fix the 'app_verify_callback' interface so that the user-defined
3354 argument is actually passed to the callback: In the
3355 SSL_CTX_set_cert_verify_callback() prototype, the callback
3356 declaration has been changed from
3359 int (*cb)(X509_STORE_CTX *,void *);
3360 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3361 i=s->ctx->app_verify_callback(&ctx)
3362 has been changed into
3363 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3365 To update applications using SSL_CTX_set_cert_verify_callback(),
3366 a dummy argument can be added to their callback functions.
3367 [D. K. Smetters <smetters@parc.xerox.com>]
3369 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3370 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3372 *) Add and OPENSSL_LOAD_CONF define which will cause
3373 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3374 This allows older applications to transparently support certain
3375 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3376 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3377 load the config file and OPENSSL_add_all_algorithms_conf() which will
3378 always load it have also been added.
3381 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
3382 Adjust NIDs and EVP layer.
3383 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3385 *) Config modules support in openssl utility.
3387 Most commands now load modules from the config file,
3388 though in a few (such as version) this isn't done
3389 because it couldn't be used for anything.
3391 In the case of ca and req the config file used is
3392 the same as the utility itself: that is the -config
3393 command line option can be used to specify an
3397 *) Move default behaviour from OPENSSL_config(). If appname is NULL
3398 use "openssl_conf" if filename is NULL use default openssl config file.
3401 *) Add an argument to OPENSSL_config() to allow the use of an alternative
3402 config section name. Add a new flag to tolerate a missing config file
3403 and move code to CONF_modules_load_file().
3406 *) Support for crypto accelerator cards from Accelerated Encryption
3407 Processing, www.aep.ie. (Use engine 'aep')
3408 The support was copied from 0.9.6c [engine] and adapted/corrected
3409 to work with the new engine framework.
3410 [AEP Inc. and Richard Levitte]
3412 *) Support for SureWare crypto accelerator cards from Baltimore
3413 Technologies. (Use engine 'sureware')
3414 The support was copied from 0.9.6c [engine] and adapted
3415 to work with the new engine framework.
3418 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
3419 make the newer ENGINE framework commands for the CHIL engine work.
3420 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
3422 *) Make it possible to produce shared libraries on ReliantUNIX.
3423 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
3425 *) Add the configuration target debug-linux-ppro.
3426 Make 'openssl rsa' use the general key loading routines
3427 implemented in apps.c, and make those routines able to
3428 handle the key format FORMAT_NETSCAPE and the variant
3430 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3432 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3433 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3435 *) Add -keyform to rsautl, and document -engine.
3436 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3438 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3439 BIO_R_NO_SUCH_FILE error code rather than the generic
3440 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3443 *) Add new functions
3445 ERR_peek_last_error_line
3446 ERR_peek_last_error_line_data.
3447 These are similar to
3450 ERR_peek_error_line_data,
3451 but report on the latest error recorded rather than the first one
3452 still in the error queue.
3453 [Ben Laurie, Bodo Moeller]
3455 *) default_algorithms option in ENGINE config module. This allows things
3457 default_algorithms = ALL
3458 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3461 *) Prelminary ENGINE config module.
3464 *) New experimental application configuration code.
3467 *) Change the AES code to follow the same name structure as all other
3468 symmetric ciphers, and behave the same way. Move everything to
3469 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3470 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3472 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3473 [Ben Laurie and Theo de Raadt]
3475 *) Add option to output public keys in req command.
3476 [Massimiliano Pala madwolf@openca.org]
3478 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3479 (up to about 10% better than before for P-192 and P-224).
3482 *) New functions/macros
3484 SSL_CTX_set_msg_callback(ctx, cb)
3485 SSL_CTX_set_msg_callback_arg(ctx, arg)
3486 SSL_set_msg_callback(ssl, cb)
3487 SSL_set_msg_callback_arg(ssl, arg)
3489 to request calling a callback function
3491 void cb(int write_p, int version, int content_type,
3492 const void *buf, size_t len, SSL *ssl, void *arg)
3494 whenever a protocol message has been completely received
3495 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3496 protocol version according to which the SSL library interprets
3497 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3498 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3499 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3500 specification (change_cipher_spec(20), alert(21), handshake(22)).
3501 'buf' and 'len' point to the actual message, 'ssl' to the
3502 SSL object, and 'arg' is the application-defined value set by
3503 SSL[_CTX]_set_msg_callback_arg().
3505 'openssl s_client' and 'openssl s_server' have new '-msg' options
3506 to enable a callback that displays all protocol messages.
3509 *) Change the shared library support so shared libraries are built as
3510 soon as the corresponding static library is finished, and thereby get
3511 openssl and the test programs linked against the shared library.
3512 This still only happens when the keyword "shard" has been given to
3513 the configuration scripts.
3515 NOTE: shared library support is still an experimental thing, and
3516 backward binary compatibility is still not guaranteed.
3517 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3519 *) Add support for Subject Information Access extension.
3520 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3522 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3523 additional bytes when new memory had to be allocated, not just
3524 when reusing an existing buffer.
3527 *) New command line and configuration option 'utf8' for the req command.
3528 This allows field values to be specified as UTF8 strings.
3531 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3532 runs for the former and machine-readable output for the latter.
3535 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3536 of the e-mail address in the DN (i.e., it will go into a certificate
3537 extension only). The new configuration file option 'email_in_dn = no'
3538 has the same effect.
3539 [Massimiliano Pala madwolf@openca.org]
3541 *) Change all functions with names starting with des_ to be starting
3542 with DES_ instead. Add wrappers that are compatible with libdes,
3543 but are named _ossl_old_des_*. Finally, add macros that map the
3544 des_* symbols to the corresponding _ossl_old_des_* if libdes
3545 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3546 desired, the des_* symbols will be mapped to DES_*, with one
3549 Since we provide two compatibility mappings, the user needs to
3550 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3551 compatibility is desired. The default (i.e., when that macro
3552 isn't defined) is OpenSSL 0.9.6c compatibility.
3554 There are also macros that enable and disable the support of old
3555 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3556 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3557 are defined, the default will apply: to support the old des routines.
3559 In either case, one must include openssl/des.h to get the correct
3560 definitions. Do not try to just include openssl/des_old.h, that
3563 NOTE: This is a major break of an old API into a new one. Software
3564 authors are encouraged to switch to the DES_ style functions. Some
3565 time in the future, des_old.h and the libdes compatibility functions
3566 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
3567 default), and then completely removed.
3570 *) Test for certificates which contain unsupported critical extensions.
3571 If such a certificate is found during a verify operation it is
3572 rejected by default: this behaviour can be overridden by either
3573 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
3574 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
3575 X509_supported_extension() has also been added which returns 1 if a
3576 particular extension is supported.
3579 *) Modify the behaviour of EVP cipher functions in similar way to digests
3580 to retain compatibility with existing code.
3583 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
3584 compatibility with existing code. In particular the 'ctx' parameter does
3585 not have to be to be initialized before the call to EVP_DigestInit() and
3586 it is tidied up after a call to EVP_DigestFinal(). New function
3587 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
3588 EVP_MD_CTX_copy() changed to not require the destination to be
3589 initialized valid and new function EVP_MD_CTX_copy_ex() added which
3590 requires the destination to be valid.
3592 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
3593 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
3596 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
3597 so that complete 'Handshake' protocol structures are kept in memory
3598 instead of overwriting 'msg_type' and 'length' with 'body' data.
3601 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
3602 [Massimo Santin via Richard Levitte]
3604 *) Major restructuring to the underlying ENGINE code. This includes
3605 reduction of linker bloat, separation of pure "ENGINE" manipulation
3606 (initialisation, etc) from functionality dealing with implementations
3607 of specific crypto iterfaces. This change also introduces integrated
3608 support for symmetric ciphers and digest implementations - so ENGINEs
3609 can now accelerate these by providing EVP_CIPHER and EVP_MD
3610 implementations of their own. This is detailed in crypto/engine/README
3611 as it couldn't be adequately described here. However, there are a few
3612 API changes worth noting - some RSA, DSA, DH, and RAND functions that
3613 were changed in the original introduction of ENGINE code have now
3614 reverted back - the hooking from this code to ENGINE is now a good
3615 deal more passive and at run-time, operations deal directly with
3616 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
3617 dereferencing through an ENGINE pointer any more. Also, the ENGINE
3618 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
3619 they were not being used by the framework as there is no concept of a
3620 BIGNUM_METHOD and they could not be generalised to the&
projects / openssl.git / blob