5 Changes between 1.0.0 and 1.1.0 [xx XXX xxxx]
7 *) Add new algorithm specific ASN1 verification initialisation function
8 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
9 handling will be the same no matter what EVP_PKEY_METHOD is used.
10 Add a PSS handler to support verification of PSS signatures: checked
11 against a number of sample certificates.
14 *) Add signature printing for PSS. Add PSS OIDs.
15 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
17 *) Add algorithm specific signature printing. An individual ASN1 method
18 can now print out signatures instead of the standard hex dump.
20 More complex signatures (e.g. PSS) can print out more meaningful
21 information. Include DSA version that prints out the signature
25 *) Add -trusted_first option which attempts to find certificates in the
26 trusted store even if an untrusted chain is also supplied.
29 *) Initial experimental support for explicitly trusted non-root CAs.
30 OpenSSL still tries to build a complete chain to a root but if an
31 intermediate CA has a trust setting included that is used. The first
32 setting is used: whether to trust or reject.
35 *) New -verify_name option in command line utilities to set verification
39 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
40 Add CMAC pkey methods.
43 *) Experiemental regnegotiation in s_server -www mode. If the client
44 browses /reneg connection is renegotiated. If /renegcert it is
45 renegotiated requesting a certificate.
48 *) Add an "external" session cache for debugging purposes to s_server. This
49 should help trace issues which normally are only apparent in deployed
50 multi-process servers.
53 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
54 a few changes are required:
56 Add SSL_OP_NO_TLSv1_1 flag.
58 Update version checking logic to handle version 1.1.
59 Add explicit IV handling (ported from DTLS code).
60 Add command line options to s_client/s_server.
63 *) Experiemental password based recipient info support for CMS library:
67 *) Split password based encryption into PBES2 and PBKDF2 functions. This
68 neatly separates the code into cipher and PBE sections and is required
69 for some algorithms that split PBES2 into separate pieces (such as
73 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
74 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
75 BIO_set_cipher() and some obscure PEM functions were changed so they
76 can now return an error. The RAND changes required a change to the
77 RAND_METHOD structure.
80 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
81 a gcc attribute to warn if the result of a function is ignored. This
82 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
83 whose return value is often ignored.
86 Changes between 0.9.8m and 1.0.0 [25 Feb 2010]
88 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
89 context. The operation can be customised via the ctrl mechanism in
90 case ENGINEs want to include additional functionality.
93 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
96 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
97 output hashes compatible with older versions of OpenSSL.
98 [Willy Weisz <weisz@vcpc.univie.ac.at>]
100 *) Fix compression algorithm handling: if resuming a session use the
101 compression algorithm of the resumed session instead of determining
102 it from client hello again. Don't allow server to change algorithm.
105 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
106 change when encrypting or decrypting.
109 *) Add load_crls() function to apps tidying load_certs() too. Add option
110 to verify utility to allow additional CRLs to be included.
113 *) Update OCSP request code to permit adding custom headers to the request:
114 some responders need this.
117 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
119 [Julia Lawall <julia@diku.dk>]
121 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
122 needlessly dereferenced structures, used obsolete functions and
123 didn't handle all updated verify codes correctly.
126 *) Disable MD2 in the default configuration.
129 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
130 indicate the initial BIO being pushed or popped. This makes it possible
131 to determine whether the BIO is the one explicitly called or as a result
132 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
133 it handles reference counts correctly and doesn't zero out the I/O bio
134 when it is not being explicitly popped. WARNING: applications which
135 included workarounds for the old buggy behaviour will need to be modified
136 or they could free up already freed BIOs.
139 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
140 renaming to all platforms (within the 0.9.8 branch, this was
141 done conditionally on Netware platforms to avoid a name clash).
142 [Guenter <lists@gknw.net>]
144 *) Add ECDHE and PSK support to DTLS.
145 [Michael Tuexen <tuexen@fh-muenster.de>]
147 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
151 *) Add "missing" function EVP_MD_flags() (without this the only way to
152 retrieve a digest flags is by accessing the structure directly. Update
153 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
154 or cipher is registered as in the "from" argument. Print out all
155 registered digests in the dgst usage message instead of manually
156 attempting to work them out.
159 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
160 this allows the use of compression and extensions. Change default cipher
161 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
162 by default unless an application cipher string requests it.
165 *) Alter match criteria in PKCS12_parse(). It used to try to use local
166 key ids to find matching certificates and keys but some PKCS#12 files
167 don't follow the (somewhat unwritten) rules and this strategy fails.
168 Now just gather all certificates together and the first private key
169 then look for the first certificate that matches the key.
172 *) Support use of registered digest and cipher names for dgst and cipher
173 commands instead of having to add each one as a special case. So now
180 openssl dgst -sha256 foo
182 and this works for ENGINE based algorithms too.
186 *) Update Gost ENGINE to support parameter files.
187 [Victor B. Wagner <vitus@cryptocom.ru>]
189 *) Support GeneralizedTime in ca utility.
190 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
192 *) Enhance the hash format used for certificate directory links. The new
193 form uses the canonical encoding (meaning equivalent names will work
194 even if they aren't identical) and uses SHA1 instead of MD5. This form
195 is incompatible with the older format and as a result c_rehash should
196 be used to rebuild symbolic links.
199 *) Make PKCS#8 the default write format for private keys, replacing the
200 traditional format. This form is standardised, more secure and doesn't
201 include an implicit MD5 dependency.
204 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
205 committed to OpenSSL should pass this lot as a minimum.
208 *) Add session ticket override functionality for use by EAP-FAST.
209 [Jouni Malinen <j@w1.fi>]
211 *) Modify HMAC functions to return a value. Since these can be implemented
212 in an ENGINE errors can occur.
215 *) Type-checked OBJ_bsearch_ex.
218 *) Type-checked OBJ_bsearch. Also some constification necessitated
219 by type-checking. Still to come: TXT_DB, bsearch(?),
220 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
224 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
225 seconds to a tm structure directly, instead of going through OS
226 specific date routines. This avoids any issues with OS routines such
227 as the year 2038 bug. New *_adj() functions for ASN1 time structures
228 and X509_time_adj_ex() to cover the extended range. The existing
229 X509_time_adj() is still usable and will no longer have any date issues.
232 *) Delta CRL support. New use deltas option which will attempt to locate
233 and search any appropriate delta CRLs available.
235 This work was sponsored by Google.
238 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
239 code and add additional score elements. Validate alternate CRL paths
240 as part of the CRL checking and indicate a new error "CRL path validation
241 error" in this case. Applications wanting additional details can use
242 the verify callback and check the new "parent" field. If this is not
243 NULL CRL path validation is taking place. Existing applications wont
244 see this because it requires extended CRL support which is off by
247 This work was sponsored by Google.
250 *) Support for freshest CRL extension.
252 This work was sponsored by Google.
255 *) Initial indirect CRL support. Currently only supported in the CRLs
256 passed directly and not via lookup. Process certificate issuer
257 CRL entry extension and lookup CRL entries by bother issuer name
258 and serial number. Check and process CRL issuer entry in IDP extension.
260 This work was sponsored by Google.
263 *) Add support for distinct certificate and CRL paths. The CRL issuer
264 certificate is validated separately in this case. Only enabled if
265 an extended CRL support flag is set: this flag will enable additional
266 CRL functionality in future.
268 This work was sponsored by Google.
271 *) Add support for policy mappings extension.
273 This work was sponsored by Google.
276 *) Fixes to pathlength constraint, self issued certificate handling,
277 policy processing to align with RFC3280 and PKITS tests.
279 This work was sponsored by Google.
282 *) Support for name constraints certificate extension. DN, email, DNS
283 and URI types are currently supported.
285 This work was sponsored by Google.
288 *) To cater for systems that provide a pointer-based thread ID rather
289 than numeric, deprecate the current numeric thread ID mechanism and
290 replace it with a structure and associated callback type. This
291 mechanism allows a numeric "hash" to be extracted from a thread ID in
292 either case, and on platforms where pointers are larger than 'long',
293 mixing is done to help ensure the numeric 'hash' is usable even if it
294 can't be guaranteed unique. The default mechanism is to use "&errno"
295 as a pointer-based thread ID to distinguish between threads.
297 Applications that want to provide their own thread IDs should now use
298 CRYPTO_THREADID_set_callback() to register a callback that will call
299 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
301 Note that ERR_remove_state() is now deprecated, because it is tied
302 to the assumption that thread IDs are numeric. ERR_remove_state(0)
303 to free the current thread's error state should be replaced by
304 ERR_remove_thread_state(NULL).
306 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
307 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
308 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
309 application was previously providing a numeric thread callback that
310 was inappropriate for distinguishing threads, then uniqueness might
311 have been obtained with &errno that happened immediately in the
312 intermediate development versions of OpenSSL; this is no longer the
313 case, the numeric thread callback will now override the automatic use
315 [Geoff Thorpe, with help from Bodo Moeller]
317 *) Initial support for different CRL issuing certificates. This covers a
318 simple case where the self issued certificates in the chain exist and
319 the real CRL issuer is higher in the existing chain.
321 This work was sponsored by Google.
324 *) Removed effectively defunct crypto/store from the build.
327 *) Revamp of STACK to provide stronger type-checking. Still to come:
328 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
329 ASN1_STRING, CONF_VALUE.
332 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
333 RAM on SSL connections. This option can save about 34k per idle SSL.
336 *) Revamp of LHASH to provide stronger type-checking. Still to come:
337 STACK, TXT_DB, bsearch, qsort.
340 *) Initial support for Cryptographic Message Syntax (aka CMS) based
341 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
342 support for data, signedData, compressedData, digestedData and
343 encryptedData, envelopedData types included. Scripts to check against
344 RFC4134 examples draft and interop and consistency checks of many
345 content types and variants.
348 *) Add options to enc utility to support use of zlib compression BIO.
351 *) Extend mk1mf to support importing of options and assembly language
352 files from Configure script, currently only included in VC-WIN32.
353 The assembly language rules can now optionally generate the source
354 files from the associated perl scripts.
357 *) Implement remaining functionality needed to support GOST ciphersuites.
358 Interop testing has been performed using CryptoPro implementations.
359 [Victor B. Wagner <vitus@cryptocom.ru>]
361 *) s390x assembler pack.
364 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
368 *) Implement Opaque PRF Input TLS extension as specified in
369 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
370 official specification yet and no extension type assignment by
371 IANA exists, this extension (for now) will have to be explicitly
372 enabled when building OpenSSL by providing the extension number
373 to use. For example, specify an option
375 -DTLSEXT_TYPE_opaque_prf_input=0x9527
377 to the "config" or "Configure" script to enable the extension,
378 assuming extension number 0x9527 (which is a completely arbitrary
379 and unofficial assignment based on the MD5 hash of the Internet
380 Draft). Note that by doing so, you potentially lose
381 interoperability with other TLS implementations since these might
382 be using the same extension number for other purposes.
384 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
385 opaque PRF input value to use in the handshake. This will create
386 an interal copy of the length-'len' string at 'src', and will
387 return non-zero for success.
389 To get more control and flexibility, provide a callback function
392 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
393 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
397 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
400 Callback function 'cb' will be called in handshakes, and is
401 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
402 Argument 'arg' is for application purposes (the value as given to
403 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
404 be provided to the callback function). The callback function
405 has to return non-zero to report success: usually 1 to use opaque
406 PRF input just if possible, or 2 to enforce use of the opaque PRF
407 input. In the latter case, the library will abort the handshake
408 if opaque PRF input is not successfully negotiated.
410 Arguments 'peerinput' and 'len' given to the callback function
411 will always be NULL and 0 in the case of a client. A server will
412 see the client's opaque PRF input through these variables if
413 available (NULL and 0 otherwise). Note that if the server
414 provides an opaque PRF input, the length must be the same as the
415 length of the client's opaque PRF input.
417 Note that the callback function will only be called when creating
418 a new session (session resumption can resume whatever was
419 previously negotiated), and will not be called in SSL 2.0
420 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
421 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
422 for applications that need to enforce opaque PRF input.
426 *) Update ssl code to support digests other than SHA1+MD5 for handshake
429 [Victor B. Wagner <vitus@cryptocom.ru>]
431 *) Add RFC4507 support to OpenSSL. This includes the corrections in
432 RFC4507bis. The encrypted ticket format is an encrypted encoded
433 SSL_SESSION structure, that way new session features are automatically
436 If a client application caches session in an SSL_SESSION structure
437 support is transparent because tickets are now stored in the encoded
440 The SSL_CTX structure automatically generates keys for ticket
441 protection in servers so again support should be possible
442 with no application modification.
444 If a client or server wishes to disable RFC4507 support then the option
445 SSL_OP_NO_TICKET can be set.
447 Add a TLS extension debugging callback to allow the contents of any client
448 or server extensions to be examined.
450 This work was sponsored by Google.
453 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
454 OpenSSL should now compile cleanly on gcc 4.2
455 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
457 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
458 support including streaming MAC support: this is required for GOST
460 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
462 *) Add option -stream to use PKCS#7 streaming in smime utility. New
463 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
464 to output in BER and PEM format.
467 *) Experimental support for use of HMAC via EVP_PKEY interface. This
468 allows HMAC to be handled via the EVP_DigestSign*() interface. The
469 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
470 ENGINE support for HMAC keys which are unextractable. New -mac and
471 -macopt options to dgst utility.
474 *) New option -sigopt to dgst utility. Update dgst to use
475 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
476 alternative signing paramaters such as X9.31 or PSS in the dgst
480 *) Change ssl_cipher_apply_rule(), the internal function that does
481 the work each time a ciphersuite string requests enabling
482 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
483 removing ("!foo+bar") a class of ciphersuites: Now it maintains
484 the order of disabled ciphersuites such that those ciphersuites
485 that most recently went from enabled to disabled not only stay
486 in order with respect to each other, but also have higher priority
487 than other disabled ciphersuites the next time ciphersuites are
490 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
491 the same ciphersuites as with "HIGH" alone, but in a specific
492 order where the PSK ciphersuites come first (since they are the
493 most recently disabled ciphersuites when "HIGH" is parsed).
495 Also, change ssl_create_cipher_list() (using this new
496 funcionality) such that between otherwise identical
497 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
501 *) Change ssl_create_cipher_list() so that it automatically
502 arranges the ciphersuites in reasonable order before starting
503 to process the rule string. Thus, the definition for "DEFAULT"
504 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
505 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
506 This makes it much easier to arrive at a reasonable default order
507 in applications for which anonymous ciphers are OK (meaning
508 that you can't actually use DEFAULT).
509 [Bodo Moeller; suggested by Victor Duchovni]
511 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
512 processing) into multiple integers instead of setting
513 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
514 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
515 (These masks as well as the individual bit definitions are hidden
516 away into the non-exported interface ssl/ssl_locl.h, so this
517 change to the definition of the SSL_CIPHER structure shouldn't
518 affect applications.) This give us more bits for each of these
519 categories, so there is no longer a need to coagulate AES128 and
520 AES256 into a single algorithm bit, and to coagulate Camellia128
521 and Camellia256 into a single algorithm bit, which has led to all
524 Thus, among other things, the kludge introduced in 0.9.7m and
525 0.9.8e for masking out AES256 independently of AES128 or masking
526 out Camellia256 independently of AES256 is not needed here in 0.9.9.
528 With the change, we also introduce new ciphersuite aliases that
529 so far were missing: "AES128", "AES256", "CAMELLIA128", and
533 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
534 Use the leftmost N bytes of the signature input if the input is
535 larger than the prime q (with N being the size in bytes of q).
538 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
539 it yet and it is largely untested.
542 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
545 *) Initial incomplete changes to avoid need for function casts in OpenSSL
546 some compilers (gcc 4.2 and later) reject their use. Safestack is
547 reimplemented. Update ASN1 to avoid use of legacy functions.
550 *) Win32/64 targets are linked with Winsock2.
553 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
554 to external functions. This can be used to increase CRL handling
555 efficiency especially when CRLs are very large by (for example) storing
556 the CRL revoked certificates in a database.
559 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
560 new CRLs added to a directory can be used. New command line option
561 -verify_return_error to s_client and s_server. This causes real errors
562 to be returned by the verify callback instead of carrying on no matter
563 what. This reflects the way a "real world" verify callback would behave.
566 *) GOST engine, supporting several GOST algorithms and public key formats.
567 Kindly donated by Cryptocom.
570 *) Partial support for Issuing Distribution Point CRL extension. CRLs
571 partitioned by DP are handled but no indirect CRL or reason partitioning
572 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
573 selected via a scoring technique which handles IDP and AKID in CRLs.
576 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
577 will ultimately be used for all verify operations: this will remove the
578 X509_STORE dependency on certificate verification and allow alternative
579 lookup methods. X509_STORE based implementations of these two callbacks.
582 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
583 Modify get_crl() to find a valid (unexpired) CRL if possible.
586 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
587 this would be called X509_CRL_cmp() but that name is already used by
588 a function that just compares CRL issuer names. Cache several CRL
589 extensions in X509_CRL structure and cache CRLDP in X509.
592 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
593 this maps equivalent X509_NAME structures into a consistent structure.
594 Name comparison can then be performed rapidly using memcmp().
597 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
601 *) Allow digests to supply their own micalg string for S/MIME type using
602 the ctrl EVP_MD_CTRL_MICALG.
605 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
606 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
607 ctrl. It can then customise the structure before and/or after signing
611 *) New function OBJ_add_sigid() to allow application defined signature OIDs
612 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
613 to free up any added signature OIDs.
616 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
617 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
618 digest and cipher tables. New options added to openssl utility:
619 list-message-digest-algorithms and list-cipher-algorithms.
622 *) Change the array representation of binary polynomials: the list
623 of degrees of non-zero coefficients is now terminated with -1.
624 Previously it was terminated with 0, which was also part of the
625 value; thus, the array representation was not applicable to
626 polynomials where t^0 has coefficient zero. This change makes
627 the array representation useful in a more general context.
630 *) Various modifications and fixes to SSL/TLS cipher string
631 handling. For ECC, the code now distinguishes between fixed ECDH
632 with RSA certificates on the one hand and with ECDSA certificates
633 on the other hand, since these are separate ciphersuites. The
634 unused code for Fortezza ciphersuites has been removed.
636 For consistency with EDH, ephemeral ECDH is now called "EECDH"
637 (not "ECDHE"). For consistency with the code for DH
638 certificates, use of ECDH certificates is now considered ECDH
639 authentication, not RSA or ECDSA authentication (the latter is
640 merely the CA's signing algorithm and not actively used in the
643 The temporary ciphersuite alias "ECCdraft" is no longer
644 available, and ECC ciphersuites are no longer excluded from "ALL"
645 and "DEFAULT". The following aliases now exist for RFC 4492
646 ciphersuites, most of these by analogy with the DH case:
648 kECDHr - ECDH cert, signed with RSA
649 kECDHe - ECDH cert, signed with ECDSA
650 kECDH - ECDH cert (signed with either RSA or ECDSA)
651 kEECDH - ephemeral ECDH
652 ECDH - ECDH cert or ephemeral ECDH
658 AECDH - anonymous ECDH
659 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
663 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
664 Use correct micalg parameters depending on digest(s) in signed message.
667 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
668 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
671 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
672 an engine to register a method. Add ENGINE lookups for methods and
673 functional reference processing.
676 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
677 EVP_{Sign,Verify}* which allow an application to customise the signature
681 *) New -resign option to smime utility. This adds one or more signers
682 to an existing PKCS#7 signedData structure. Also -md option to use an
683 alternative message digest algorithm for signing.
686 *) Tidy up PKCS#7 routines and add new functions to make it easier to
687 create PKCS7 structures containing multiple signers. Update smime
688 application to support multiple signers.
691 *) New -macalg option to pkcs12 utility to allow setting of an alternative
695 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
696 Reorganize PBE internals to lookup from a static table using NIDs,
697 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
698 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
699 PRF which will be automatically used with PBES2.
702 *) Replace the algorithm specific calls to generate keys in "req" with the
706 *) Update PKCS#7 enveloped data routines to use new API. This is now
707 supported by any public key method supporting the encrypt operation. A
708 ctrl is added to allow the public key algorithm to examine or modify
709 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
713 *) Add a ctrl to asn1 method to allow a public key algorithm to express
714 a default digest type to use. In most cases this will be SHA1 but some
715 algorithms (such as GOST) need to specify an alternative digest. The
716 return value indicates how strong the prefernce is 1 means optional and
717 2 is mandatory (that is it is the only supported type). Modify
718 ASN1_item_sign() to accept a NULL digest argument to indicate it should
719 use the default md. Update openssl utilities to use the default digest
720 type for signing if it is not explicitly indicated.
723 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
724 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
725 signing method from the key type. This effectively removes the link
726 between digests and public key types.
729 *) Add an OID cross reference table and utility functions. Its purpose is to
730 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
731 rsaEncryption. This will allow some of the algorithm specific hackery
732 needed to use the correct OID to be removed.
735 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
736 structures for PKCS7_sign(). They are now set up by the relevant public
740 *) Add provisional EC pkey method with support for ECDSA and ECDH.
743 *) Add support for key derivation (agreement) in the API, DH method and
747 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
748 public and private key formats. As a side effect these add additional
749 command line functionality not previously available: DSA signatures can be
750 generated and verified using pkeyutl and DH key support and generation in
755 [Oliver Tappe <zooey@hirschkaefer.de>]
757 *) New make target "install_html_docs" installs HTML renditions of the
759 [Oliver Tappe <zooey@hirschkaefer.de>]
761 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
762 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
763 support key and parameter generation and add initial key generation
764 functionality for RSA.
767 *) Add functions for main EVP_PKEY_method operations. The undocumented
768 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
769 EVP_PKEY_{encrypt,decrypt}_old.
772 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
773 key API, doesn't do much yet.
776 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
777 public key algorithms. New option to openssl utility:
778 "list-public-key-algorithms" to print out info.
781 *) Implement the Supported Elliptic Curves Extension for
782 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
785 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
786 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
789 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
790 utilities such as rsa, dsa, dsaparam etc except they process any key
794 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
795 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
796 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
800 *) Initial support for pluggable public key ASN1.
801 De-spaghettify the public key ASN1 handling. Move public and private
802 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
803 algorithm specific handling to a single module within the relevant
804 algorithm directory. Add functions to allow (near) opaque processing
805 of public and private key structures.
808 *) Implement the Supported Point Formats Extension for
809 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
812 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
813 for the psk identity [hint] and the psk callback functions to the
814 SSL_SESSION, SSL and SSL_CTX structure.
817 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
821 SSL_CTX_use_psk_identity_hint
822 SSL_get_psk_identity_hint
824 SSL_use_psk_identity_hint
826 [Mika Kousa and Pasi Eronen of Nokia Corporation]
828 *) Add RFC 3161 compliant time stamp request creation, response generation
829 and response verification functionality.
830 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
832 *) Add initial support for TLS extensions, specifically for the server_name
833 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
834 have new members for a host name. The SSL data structure has an
835 additional member SSL_CTX *initial_ctx so that new sessions can be
836 stored in that context to allow for session resumption, even after the
837 SSL has been switched to a new SSL_CTX in reaction to a client's
838 server_name extension.
840 New functions (subject to change):
843 SSL_get_servername_type()
846 New CTRL codes and macros (subject to change):
848 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
849 - SSL_CTX_set_tlsext_servername_callback()
850 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
851 - SSL_CTX_set_tlsext_servername_arg()
852 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
854 openssl s_client has a new '-servername ...' option.
856 openssl s_server has new options '-servername_host ...', '-cert2 ...',
857 '-key2 ...', '-servername_fatal' (subject to change). This allows
858 testing the HostName extension for a specific single host name ('-cert'
859 and '-key' remain fallbacks for handshakes without HostName
860 negotiation). If the unrecogninzed_name alert has to be sent, this by
861 default is a warning; it becomes fatal with the '-servername_fatal'
864 [Peter Sylvester, Remy Allais, Christophe Renou]
866 *) Whirlpool hash implementation is added.
869 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
870 bn(64,32). Because of instruction set limitations it doesn't have
871 any negative impact on performance. This was done mostly in order
872 to make it possible to share assembler modules, such as bn_mul_mont
873 implementations, between 32- and 64-bit builds without hassle.
876 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
877 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
881 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
882 dedicated Montgomery multiplication procedure, is introduced.
883 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
884 "64-bit" performance on certain 32-bit targets.
887 *) New option SSL_OP_NO_COMP to disable use of compression selectively
888 in SSL structures. New SSL ctrl to set maximum send fragment size.
889 Save memory by seeting the I/O buffer sizes dynamically instead of
890 using the maximum available value.
893 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
894 in addition to the text details.
897 *) Very, very preliminary EXPERIMENTAL support for printing of general
898 ASN1 structures. This currently produces rather ugly output and doesn't
899 handle several customised structures at all.
902 *) Integrated support for PVK file format and some related formats such
903 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
904 these in the 'rsa' and 'dsa' utilities.
907 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
910 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
911 place for the (very old) "NETSCAPE" format certificates which are now
912 handled using new ASN1 code equivalents.
915 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
916 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
917 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
920 *) Modify CRL distribution points extension code to print out previously
921 unsupported fields. Enhance extension setting code to allow setting of
925 *) Add print and set support for Issuing Distribution Point CRL extension.
928 *) Change 'Configure' script to enable Camellia by default.
931 Changes between 0.9.8m and 0.9.8n [xx XXX xxxx]
933 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
934 could be crashed if the relevant tables were not present (e.g. chrooted).
935 [Tomas Hoger <thoger@redhat.com>]
937 Changes between 0.9.8l and 0.9.8m [xx XXX xxxx]
939 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
940 accommodate for stack sorting, always a write lock!).
943 *) On some versions of WIN32 Heap32Next is very slow. This can cause
944 excessive delays in the RAND_poll(): over a minute. As a workaround
945 include a time check in the inner Heap32Next loop too.
948 *) The code that handled flushing of data in SSL/TLS originally used the
949 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
950 the problem outlined in PR#1949. The fix suggested there however can
951 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
952 of Apache). So instead simplify the code to flush unconditionally.
953 This should be fine since flushing with no data to flush is a no op.
956 *) Handle TLS versions 2.0 and later properly and correctly use the
957 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
958 off ancient servers have a habit of sticking around for a while...
961 *) Modify compression code so it frees up structures without using the
962 ex_data callbacks. This works around a problem where some applications
963 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
964 restarting) then use compression (e.g. SSL with compression) later.
965 This results in significant per-connection memory leaks and
966 has caused some security issues including CVE-2008-1678 and
970 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
971 connect and renegotiate with servers which do not support RI.
972 Until RI is more widely deployed this option is enabled by default.
975 *) Add "missing" ssl ctrls to clear options and mode.
978 *) If client attempts to renegotiate and doesn't support RI respond with
979 a no_renegotiation alert as required by RFC5746. Some renegotiating
980 TLS clients will continue a connection gracefully when they receive
981 the alert. Unfortunately OpenSSL mishandled this alert and would hang
982 waiting for a server hello which it will never receive. Now we treat a
983 received no_renegotiation alert as a fatal error. This is because
984 applications requesting a renegotiation might well expect it to succeed
985 and would have no code in place to handle the server denying it so the
986 only safe thing to do is to terminate the connection.
989 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
990 peer supports secure renegotiation and 0 otherwise. Print out peer
991 renegotiation support in s_client/s_server.
994 *) Replace the highly broken and deprecated SPKAC certification method with
995 the updated NID creation version. This should correctly handle UTF8.
998 *) Implement RFC5746. Re-enable renegotiation but require the extension
999 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1000 turns out to be a bad idea. It has been replaced by
1001 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1002 SSL_CTX_set_options(). This is really not recommended unless you
1003 know what you are doing.
1004 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1006 *) Fixes to stateless session resumption handling. Use initial_ctx when
1007 issuing and attempting to decrypt tickets in case it has changed during
1008 servername handling. Use a non-zero length session ID when attempting
1009 stateless session resumption: this makes it possible to determine if
1010 a resumption has occurred immediately after receiving server hello
1011 (several places in OpenSSL subtly assume this) instead of later in
1015 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1016 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1017 fixes for a few places where the return code is not checked
1019 [Julia Lawall <julia@diku.dk>]
1021 *) Add --strict-warnings option to Configure script to include devteam
1022 warnings in other configurations.
1025 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1026 makes it possible to install openssl libraries in locations which
1027 have names other than "lib", for example "/usr/lib64" which some
1029 [Steve Henson, based on patch from Jeremy Utley]
1031 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1032 X690 8.9.12 and can produce some misleading textual output of OIDs.
1033 [Steve Henson, reported by Dan Kaminsky]
1035 *) Delete MD2 from algorithm tables. This follows the recommendation in
1036 several standards that it is not used in new applications due to
1037 several cryptographic weaknesses. For binary compatibility reasons
1038 the MD2 API is still compiled in by default.
1041 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1045 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1046 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1048 [Guenter <lists@gknw.net>]
1050 *) Fix the server certificate chain building code to use X509_verify_cert(),
1051 it used to have an ad-hoc builder which was unable to cope with anything
1052 other than a simple chain.
1053 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1055 *) Don't check self signed certificate signatures in X509_verify_cert()
1056 by default (a flag can override this): it just wastes time without
1057 adding any security. As a useful side effect self signed root CAs
1058 with non-FIPS digests are now usable in FIPS mode.
1061 *) In dtls1_process_out_of_seq_message() the check if the current message
1062 is already buffered was missing. For every new message was memory
1063 allocated, allowing an attacker to perform an denial of service attack
1064 with sending out of seq handshake messages until there is no memory
1065 left. Additionally every future messege was buffered, even if the
1066 sequence number made no sense and would be part of another handshake.
1067 So only messages with sequence numbers less than 10 in advance will be
1068 buffered. (CVE-2009-1378)
1069 [Robin Seggelmann, discovered by Daniel Mentz]
1071 *) Records are buffered if they arrive with a future epoch to be
1072 processed after finishing the corresponding handshake. There is
1073 currently no limitation to this buffer allowing an attacker to perform
1074 a DOS attack with sending records with future epochs until there is no
1075 memory left. This patch adds the pqueue_size() function to detemine
1076 the size of a buffer and limits the record buffer to 100 entries.
1078 [Robin Seggelmann, discovered by Daniel Mentz]
1080 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1081 parent structure is freed. (CVE-2009-1379)
1084 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1085 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1088 [Ilya O. <vrghost@gmail.com>]
1090 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1092 *) Disable renegotiation completely - this fixes a severe security
1093 problem (CVE-2009-3555) at the cost of breaking all
1094 renegotiation. Renegotiation can be re-enabled by setting
1095 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1096 run-time. This is really not recommended unless you know what
1100 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1102 *) Don't set val to NULL when freeing up structures, it is freed up by
1103 underlying code. If sizeof(void *) > sizeof(long) this can result in
1104 zeroing past the valid field. (CVE-2009-0789)
1105 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1107 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1108 checked correctly. This would allow some invalid signed attributes to
1109 appear to verify correctly. (CVE-2009-0591)
1110 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1112 *) Reject UniversalString and BMPString types with invalid lengths. This
1113 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1114 a legal length. (CVE-2009-0590)
1117 *) Set S/MIME signing as the default purpose rather than setting it
1118 unconditionally. This allows applications to override it at the store
1122 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1123 to handle some structures.
1126 *) Improve efficiency of mem_gets: don't search whole buffer each time
1128 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1130 *) New -hex option for openssl rand.
1133 *) Print out UTF8String and NumericString when parsing ASN1.
1136 *) Support NumericString type for name components.
1139 *) Allow CC in the environment to override the automatically chosen
1140 compiler. Note that nothing is done to ensure flags work with the
1144 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1146 *) Properly check EVP_VerifyFinal() and similar return values
1148 [Ben Laurie, Bodo Moeller, Google Security Team]
1150 *) Enable TLS extensions by default.
1153 *) Allow the CHIL engine to be loaded, whether the application is
1154 multithreaded or not. (This does not release the developer from the
1155 obligation to set up the dynamic locking callbacks.)
1156 [Sander Temme <sander@temme.net>]
1158 *) Use correct exit code if there is an error in dgst command.
1159 [Steve Henson; problem pointed out by Roland Dirlewanger]
1161 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1162 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1165 *) Add experimental JPAKE support, including demo authentication in
1166 s_client and s_server.
1169 *) Set the comparison function in v3_addr_canonize().
1170 [Rob Austein <sra@hactrn.net>]
1172 *) Add support for XMPP STARTTLS in s_client.
1173 [Philip Paeps <philip@freebsd.org>]
1175 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1176 to ensure that even with this option, only ciphersuites in the
1177 server's preference list will be accepted. (Note that the option
1178 applies only when resuming a session, so the earlier behavior was
1179 just about the algorithm choice for symmetric cryptography.)
1182 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1184 *) Fix NULL pointer dereference if a DTLS server received
1185 ChangeCipherSpec as first record (CVE-2009-1386).
1188 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1189 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1192 *) The fix in 0.9.8c that supposedly got rid of unsafe
1193 double-checked locking was incomplete for RSA blinding,
1194 addressing just one layer of what turns out to have been
1195 doubly unsafe triple-checked locking.
1197 So now fix this for real by retiring the MONT_HELPER macro
1198 in crypto/rsa/rsa_eay.c.
1200 [Bodo Moeller; problem pointed out by Marius Schilder]
1202 *) Various precautionary measures:
1204 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1206 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1207 (NB: This would require knowledge of the secret session ticket key
1208 to exploit, in which case you'd be SOL either way.)
1210 - Change bn_nist.c so that it will properly handle input BIGNUMs
1211 outside the expected range.
1213 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1216 [Neel Mehta, Bodo Moeller]
1218 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1219 the load fails. Useful for distros.
1220 [Ben Laurie and the FreeBSD team]
1222 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1225 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1228 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1230 This work was sponsored by Logica.
1233 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1234 keystores. Support for SSL/TLS client authentication too.
1235 Not compiled unless enable-capieng specified to Configure.
1237 This work was sponsored by Logica.
1240 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1241 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1242 attribute creation routines such as certifcate requests and PKCS#12
1246 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1248 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1249 handshake which could lead to a cilent crash as found using the
1250 Codenomicon TLS test suite (CVE-2008-1672)
1251 [Steve Henson, Mark Cox]
1253 *) Fix double free in TLS server name extensions which could lead to
1254 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1257 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1259 Clear the error queue to ensure that error entries left from
1260 older function calls do not interfere with the correct operation.
1261 [Lutz Jaenicke, Erik de Castro Lopo]
1263 *) Remove root CA certificates of commercial CAs:
1265 The OpenSSL project does not recommend any specific CA and does not
1266 have any policy with respect to including or excluding any CA.
1267 Therefore it does not make any sense to ship an arbitrary selection
1268 of root CA certificates with the OpenSSL software.
1271 *) RSA OAEP patches to fix two separate invalid memory reads.
1272 The first one involves inputs when 'lzero' is greater than
1273 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1274 before the beginning of from). The second one involves inputs where
1275 the 'db' section contains nothing but zeroes (there is a one-byte
1276 invalid read after the end of 'db').
1277 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1279 *) Partial backport from 0.9.9-dev:
1281 Introduce bn_mul_mont (dedicated Montgomery multiplication
1282 procedure) as a candidate for BIGNUM assembler implementation.
1283 While 0.9.9-dev uses assembler for various architectures, only
1284 x86_64 is available by default here in the 0.9.8 branch, and
1285 32-bit x86 is available through a compile-time setting.
1287 To try the 32-bit x86 assembler implementation, use Configure
1288 option "enable-montasm" (which exists only for this backport).
1290 As "enable-montasm" for 32-bit x86 disclaims code stability
1291 anyway, in this constellation we activate additional code
1292 backported from 0.9.9-dev for further performance improvements,
1293 namely BN_from_montgomery_word. (To enable this otherwise,
1294 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1296 [Andy Polyakov (backport partially by Bodo Moeller)]
1298 *) Add TLS session ticket callback. This allows an application to set
1299 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1300 values. This is useful for key rollover for example where several key
1301 sets may exist with different names.
1304 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1305 This was broken until now in 0.9.8 releases, such that the only way
1306 a registered ENGINE could be used (assuming it initialises
1307 successfully on the host) was to explicitly set it as the default
1308 for the relevant algorithms. This is in contradiction with 0.9.7
1309 behaviour and the documentation. With this fix, when an ENGINE is
1310 registered into a given algorithm's table of implementations, the
1311 'uptodate' flag is reset so that auto-discovery will be used next
1312 time a new context for that algorithm attempts to select an
1314 [Ian Lister (tweaked by Geoff Thorpe)]
1316 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1317 implemention in the following ways:
1319 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1322 Lack of BER streaming support means one pass streaming processing is
1323 only supported if data is detached: setting the streaming flag is
1324 ignored for embedded content.
1326 CMS support is disabled by default and must be explicitly enabled
1327 with the enable-cms configuration option.
1330 *) Update the GMP engine glue to do direct copies between BIGNUM and
1331 mpz_t when openssl and GMP use the same limb size. Otherwise the
1332 existing "conversion via a text string export" trick is still used.
1333 [Paul Sheer <paulsheer@gmail.com>]
1335 *) Zlib compression BIO. This is a filter BIO which compressed and
1336 uncompresses any data passed through it.
1339 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1340 RFC3394 compatible AES key wrapping.
1343 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1344 sets string data without copying. X509_ALGOR_set0() and
1345 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1346 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1347 from an X509_ATTRIBUTE structure optionally checking it occurs only
1348 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1352 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1353 to get the expected BN_FLG_CONSTTIME behavior.
1354 [Bodo Moeller (Google)]
1358 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1359 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1360 - added some more tests to do_tests.pl
1361 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1362 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1363 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1364 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1365 - various changes to netware.pl to enable gcc-cross builds on Win32
1367 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1368 - various changes to fix missing prototype warnings
1369 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1370 - added AES, WHIRLPOOL and CPUID assembler code to build files
1371 - added missing AES assembler make rules to mk1mf.pl
1372 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1373 [Guenter Knauf <eflash@gmx.net>]
1375 *) Implement certificate status request TLS extension defined in RFC3546.
1376 A client can set the appropriate parameters and receive the encoded
1377 OCSP response via a callback. A server can query the supplied parameters
1378 and set the encoded OCSP response in the callback. Add simplified examples
1379 to s_client and s_server.
1382 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1384 *) Fix various bugs:
1385 + Binary incompatibility of ssl_ctx_st structure
1386 + DTLS interoperation with non-compliant servers
1387 + Don't call get_session_cb() without proposed session
1388 + Fix ia64 assembler code
1389 [Andy Polyakov, Steve Henson]
1391 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1393 *) DTLS Handshake overhaul. There were longstanding issues with
1394 OpenSSL DTLS implementation, which were making it impossible for
1395 RFC 4347 compliant client to communicate with OpenSSL server.
1396 Unfortunately just fixing these incompatibilities would "cut off"
1397 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1398 server keeps tolerating non RFC compliant syntax. The opposite is
1399 not true, 0.9.8f client can not communicate with earlier server.
1400 This update even addresses CVE-2007-4995.
1403 *) Changes to avoid need for function casts in OpenSSL: some compilers
1404 (gcc 4.2 and later) reject their use.
1405 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1408 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1409 RFC4507bis. The encrypted ticket format is an encrypted encoded
1410 SSL_SESSION structure, that way new session features are automatically
1413 If a client application caches session in an SSL_SESSION structure
1414 support is transparent because tickets are now stored in the encoded
1417 The SSL_CTX structure automatically generates keys for ticket
1418 protection in servers so again support should be possible
1419 with no application modification.
1421 If a client or server wishes to disable RFC4507 support then the option
1422 SSL_OP_NO_TICKET can be set.
1424 Add a TLS extension debugging callback to allow the contents of any client
1425 or server extensions to be examined.
1427 This work was sponsored by Google.
1430 *) Add initial support for TLS extensions, specifically for the server_name
1431 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1432 have new members for a host name. The SSL data structure has an
1433 additional member SSL_CTX *initial_ctx so that new sessions can be
1434 stored in that context to allow for session resumption, even after the
1435 SSL has been switched to a new SSL_CTX in reaction to a client's
1436 server_name extension.
1438 New functions (subject to change):
1440 SSL_get_servername()
1441 SSL_get_servername_type()
1444 New CTRL codes and macros (subject to change):
1446 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1447 - SSL_CTX_set_tlsext_servername_callback()
1448 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1449 - SSL_CTX_set_tlsext_servername_arg()
1450 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1452 openssl s_client has a new '-servername ...' option.
1454 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1455 '-key2 ...', '-servername_fatal' (subject to change). This allows
1456 testing the HostName extension for a specific single host name ('-cert'
1457 and '-key' remain fallbacks for handshakes without HostName
1458 negotiation). If the unrecogninzed_name alert has to be sent, this by
1459 default is a warning; it becomes fatal with the '-servername_fatal'
1462 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1464 *) Add AES and SSE2 assembly language support to VC++ build.
1467 *) Mitigate attack on final subtraction in Montgomery reduction.
1470 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1471 (which previously caused an internal error).
1474 *) Squeeze another 10% out of IGE mode when in != out.
1477 *) AES IGE mode speedup.
1478 [Dean Gaudet (Google)]
1480 *) Add the Korean symmetric 128-bit cipher SEED (see
1481 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1482 add SEED ciphersuites from RFC 4162:
1484 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1485 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1486 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1487 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1489 To minimize changes between patchlevels in the OpenSSL 0.9.8
1490 series, SEED remains excluded from compilation unless OpenSSL
1491 is configured with 'enable-seed'.
1492 [KISA, Bodo Moeller]
1494 *) Mitigate branch prediction attacks, which can be practical if a
1495 single processor is shared, allowing a spy process to extract
1496 information. For detailed background information, see
1497 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1498 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1499 and Necessary Software Countermeasures"). The core of the change
1500 are new versions BN_div_no_branch() and
1501 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1502 respectively, which are slower, but avoid the security-relevant
1503 conditional branches. These are automatically called by BN_div()
1504 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1505 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1506 remove a conditional branch.
1508 BN_FLG_CONSTTIME is the new name for the previous
1509 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1510 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1511 in the exponent causes BN_mod_exp_mont() to use the alternative
1512 implementation in BN_mod_exp_mont_consttime().) The old name
1513 remains as a deprecated alias.
1515 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1516 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1517 constant-time implementations for more than just exponentiation.
1518 Here too the old name is kept as a deprecated alias.
1520 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1521 the BN_BLINDING structure gets an independent copy of the
1522 modulus. This means that the previous "BIGNUM *m" argument to
1523 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1524 essentially becomes "const BIGNUM *m", although we can't actually
1525 change this in the header file before 0.9.9. It allows
1526 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1527 enable BN_FLG_CONSTTIME.
1529 [Matthew D Wood (Intel Corp)]
1531 *) In the SSL/TLS server implementation, be strict about session ID
1532 context matching (which matters if an application uses a single
1533 external cache for different purposes). Previously,
1534 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1535 set. This did ensure strict client verification, but meant that,
1536 with applications using a single external cache for quite
1537 different requirements, clients could circumvent ciphersuite
1538 restrictions for a given session ID context by starting a session
1539 in a different context.
1542 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1543 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1544 authentication-only ciphersuites.
1547 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1548 not complete and could lead to a possible single byte overflow
1549 (CVE-2007-5135) [Ben Laurie]
1551 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1553 *) Since AES128 and AES256 (and similarly Camellia128 and
1554 Camellia256) share a single mask bit in the logic of
1555 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1556 kludge to work properly if AES128 is available and AES256 isn't
1557 (or if Camellia128 is available and Camellia256 isn't).
1560 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1561 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1562 When a point or a seed is encoded in a BIT STRING, we need to
1563 prevent the removal of trailing zero bits to get the proper DER
1564 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1565 of a NamedBitList, for which trailing 0 bits need to be removed.)
1568 *) Have SSL/TLS server implementation tolerate "mismatched" record
1569 protocol version while receiving ClientHello even if the
1570 ClientHello is fragmented. (The server can't insist on the
1571 particular protocol version it has chosen before the ServerHello
1572 message has informed the client about his choice.)
1575 *) Add RFC 3779 support.
1576 [Rob Austein for ARIN, Ben Laurie]
1578 *) Load error codes if they are not already present instead of using a
1579 static variable. This allows them to be cleanly unloaded and reloaded.
1580 Improve header file function name parsing.
1583 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1584 or CAPABILITY handshake as required by RFCs.
1587 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1589 *) Introduce limits to prevent malicious keys being able to
1590 cause a denial of service. (CVE-2006-2940)
1591 [Steve Henson, Bodo Moeller]
1593 *) Fix ASN.1 parsing of certain invalid structures that can result
1594 in a denial of service. (CVE-2006-2937) [Steve Henson]
1596 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1597 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1599 *) Fix SSL client code which could crash if connecting to a
1600 malicious SSLv2 server. (CVE-2006-4343)
1601 [Tavis Ormandy and Will Drewry, Google Security Team]
1603 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1604 match only those. Before that, "AES256-SHA" would be interpreted
1605 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1606 the same strength classification in 0.9.7h) as we currently only
1607 have a single AES bit in the ciphersuite description bitmap.
1608 That change, however, also applied to ciphersuite strings such as
1609 "RC4-MD5" that intentionally matched multiple ciphersuites --
1610 namely, SSL 2.0 ciphersuites in addition to the more common ones
1611 from SSL 3.0/TLS 1.0.
1613 So we change the selection algorithm again: Naming an explicit
1614 ciphersuite selects this one ciphersuite, and any other similar
1615 ciphersuite (same bitmap) from *other* protocol versions.
1616 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1617 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1619 Since SSL 2.0 does not have any ciphersuites for which the
1620 128/256 bit distinction would be relevant, this works for now.
1621 The proper fix will be to use different bits for AES128 and
1622 AES256, which would have avoided the problems from the beginning;
1623 however, bits are scarce, so we can only do this in a new release
1624 (not just a patchlevel) when we can change the SSL_CIPHER
1625 definition to split the single 'unsigned long mask' bitmap into
1626 multiple values to extend the available space.
1630 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1632 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1633 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1635 *) Add AES IGE and biIGE modes.
1638 *) Change the Unix randomness entropy gathering to use poll() when
1639 possible instead of select(), since the latter has some
1640 undesirable limitations.
1641 [Darryl Miles via Richard Levitte and Bodo Moeller]
1643 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
1644 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
1645 cannot be implicitly activated as part of, e.g., the "AES" alias.
1646 However, please upgrade to OpenSSL 0.9.9[-dev] for
1647 non-experimental use of the ECC ciphersuites to get TLS extension
1648 support, which is required for curve and point format negotiation
1649 to avoid potential handshake problems.
1652 *) Disable rogue ciphersuites:
1654 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1655 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1656 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1658 The latter two were purportedly from
1659 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1662 Also deactivate the remaining ciphersuites from
1663 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1664 unofficial, and the ID has long expired.
1667 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1668 dual-core machines) and other potential thread-safety issues.
1671 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
1672 versions), which is now available for royalty-free use
1673 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
1674 Also, add Camellia TLS ciphersuites from RFC 4132.
1676 To minimize changes between patchlevels in the OpenSSL 0.9.8
1677 series, Camellia remains excluded from compilation unless OpenSSL
1678 is configured with 'enable-camellia'.
1681 *) Disable the padding bug check when compression is in use. The padding
1682 bug check assumes the first packet is of even length, this is not
1683 necessarily true if compresssion is enabled and can result in false
1684 positives causing handshake failure. The actual bug test is ancient
1685 code so it is hoped that implementations will either have fixed it by
1686 now or any which still have the bug do not support compression.
1689 Changes between 0.9.8a and 0.9.8b [04 May 2006]
1691 *) When applying a cipher rule check to see if string match is an explicit
1692 cipher suite and only match that one cipher suite if it is.
1695 *) Link in manifests for VC++ if needed.
1696 [Austin Ziegler <halostatue@gmail.com>]
1698 *) Update support for ECC-based TLS ciphersuites according to
1699 draft-ietf-tls-ecc-12.txt with proposed changes (but without
1700 TLS extensions, which are supported starting with the 0.9.9
1701 branch, not in the OpenSSL 0.9.8 branch).
1704 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
1705 opaque EVP_CIPHER_CTX handling.
1708 *) Fixes and enhancements to zlib compression code. We now only use
1709 "zlib1.dll" and use the default __cdecl calling convention on Win32
1710 to conform with the standards mentioned here:
1711 http://www.zlib.net/DLL_FAQ.txt
1712 Static zlib linking now works on Windows and the new --with-zlib-include
1713 --with-zlib-lib options to Configure can be used to supply the location
1714 of the headers and library. Gracefully handle case where zlib library
1718 *) Several fixes and enhancements to the OID generation code. The old code
1719 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
1720 handle numbers larger than ULONG_MAX, truncated printing and had a
1721 non standard OBJ_obj2txt() behaviour.
1724 *) Add support for building of engines under engine/ as shared libraries
1725 under VC++ build system.
1728 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
1729 Hopefully, we will not see any false combination of paths any more.
1732 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
1734 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1735 (part of SSL_OP_ALL). This option used to disable the
1736 countermeasure against man-in-the-middle protocol-version
1737 rollback in the SSL 2.0 server implementation, which is a bad
1738 idea. (CVE-2005-2969)
1740 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1741 for Information Security, National Institute of Advanced Industrial
1742 Science and Technology [AIST], Japan)]
1744 *) Add two function to clear and return the verify parameter flags.
1747 *) Keep cipherlists sorted in the source instead of sorting them at
1748 runtime, thus removing the need for a lock.
1751 *) Avoid some small subgroup attacks in Diffie-Hellman.
1752 [Nick Mathewson and Ben Laurie]
1754 *) Add functions for well-known primes.
1757 *) Extended Windows CE support.
1758 [Satoshi Nakamura and Andy Polyakov]
1760 *) Initialize SSL_METHOD structures at compile time instead of during
1761 runtime, thus removing the need for a lock.
1764 *) Make PKCS7_decrypt() work even if no certificate is supplied by
1765 attempting to decrypt each encrypted key in turn. Add support to
1769 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
1771 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
1774 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
1777 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
1778 key into the same file any more.
1781 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
1784 *) Add -utf8 command line and config file option to 'ca'.
1785 [Stefan <stf@udoma.org]
1787 *) Removed the macro des_crypt(), as it seems to conflict with some
1788 libraries. Use DES_crypt().
1791 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
1792 involves renaming the source and generated shared-libs for
1793 both. The engines will accept the corrected or legacy ids
1794 ('ncipher' and '4758_cca' respectively) when binding. NB,
1795 this only applies when building 'shared'.
1796 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
1798 *) Add attribute functions to EVP_PKEY structure. Modify
1799 PKCS12_create() to recognize a CSP name attribute and
1800 use it. Make -CSP option work again in pkcs12 utility.
1803 *) Add new functionality to the bn blinding code:
1804 - automatic re-creation of the BN_BLINDING parameters after
1805 a fixed number of uses (currently 32)
1806 - add new function for parameter creation
1807 - introduce flags to control the update behaviour of the
1808 BN_BLINDING parameters
1809 - hide BN_BLINDING structure
1810 Add a second BN_BLINDING slot to the RSA structure to improve
1811 performance when a single RSA object is shared among several
1815 *) Add support for DTLS.
1816 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
1818 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
1819 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
1822 *) Remove buggy and incompletet DH cert support from
1823 ssl/ssl_rsa.c and ssl/s3_both.c
1826 *) Use SHA-1 instead of MD5 as the default digest algorithm for
1827 the apps/openssl applications.
1830 *) Compile clean with "-Wall -Wmissing-prototypes
1831 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
1832 DEBUG_SAFESTACK must also be set.
1835 *) Change ./Configure so that certain algorithms can be disabled by default.
1836 The new counterpiece to "no-xxx" is "enable-xxx".
1838 The patented RC5 and MDC2 algorithms will now be disabled unless
1839 "enable-rc5" and "enable-mdc2", respectively, are specified.
1841 (IDEA remains enabled despite being patented. This is because IDEA
1842 is frequently required for interoperability, and there is no license
1843 fee for non-commercial use. As before, "no-idea" can be used to
1844 avoid this algorithm.)
1848 *) Add processing of proxy certificates (see RFC 3820). This work was
1849 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
1850 EGEE (Enabling Grids for E-science in Europe).
1853 *) RC4 performance overhaul on modern architectures/implementations, such
1854 as Intel P4, IA-64 and AMD64.
1857 *) New utility extract-section.pl. This can be used specify an alternative
1858 section number in a pod file instead of having to treat each file as
1859 a separate case in Makefile. This can be done by adding two lines to the
1862 =for comment openssl_section:XXX
1864 The blank line is mandatory.
1868 *) New arguments -certform, -keyform and -pass for s_client and s_server
1869 to allow alternative format key and certificate files and passphrase
1873 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
1874 update associated structures and add various utility functions.
1876 Add new policy related verify parameters, include policy checking in
1877 standard verify code. Enhance 'smime' application with extra parameters
1878 to support policy checking and print out.
1881 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
1882 Nehemiah processors. These extensions support AES encryption in hardware
1883 as well as RNG (though RNG support is currently disabled).
1884 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
1886 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
1889 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
1890 [Andy Polyakov and a number of other people]
1892 *) Improved PowerPC platform support. Most notably BIGNUM assembler
1893 implementation contributed by IBM.
1894 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
1896 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
1897 exponent rather than 'unsigned long'. There is a corresponding change to
1898 the new 'rsa_keygen' element of the RSA_METHOD structure.
1899 [Jelte Jansen, Geoff Thorpe]
1901 *) Functionality for creating the initial serial number file is now
1902 moved from CA.pl to the 'ca' utility with a new option -create_serial.
1904 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
1905 number file to 1, which is bound to cause problems. To avoid
1906 the problems while respecting compatibility between different 0.9.7
1907 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
1908 CA.pl for serial number initialization. With the new release 0.9.8,
1909 we can fix the problem directly in the 'ca' utility.)
1912 *) Reduced header interdepencies by declaring more opaque objects in
1913 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
1914 give fewer recursive includes, which could break lazy source code - so
1915 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
1916 developers should define this symbol when building and using openssl to
1917 ensure they track the recommended behaviour, interfaces, [etc], but
1918 backwards-compatible behaviour prevails when this isn't defined.
1921 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
1924 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
1925 This will generate a random key of the appropriate length based on the
1926 cipher context. The EVP_CIPHER can provide its own random key generation
1927 routine to support keys of a specific form. This is used in the des and
1928 3des routines to generate a key of the correct parity. Update S/MIME
1929 code to use new functions and hence generate correct parity DES keys.
1930 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
1931 valid (weak or incorrect parity).
1934 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
1935 as looking them up. This is useful when the verified structure may contain
1936 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
1937 present unless the new PKCS7_NO_CRL flag is asserted.
1940 *) Extend ASN1 oid configuration module. It now additionally accepts the
1943 shortName = some long name, 1.2.3.4
1946 *) Reimplemented the BN_CTX implementation. There is now no more static
1947 limitation on the number of variables it can handle nor the depth of the
1948 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
1949 information can now expand as required, and rather than having a single
1950 static array of bignums, BN_CTX now uses a linked-list of such arrays
1951 allowing it to expand on demand whilst maintaining the usefulness of
1952 BN_CTX's "bundling".
1955 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
1956 to allow all RSA operations to function using a single BN_CTX.
1959 *) Preliminary support for certificate policy evaluation and checking. This
1960 is initially intended to pass the tests outlined in "Conformance Testing
1961 of Relying Party Client Certificate Path Processing Logic" v1.07.
1964 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
1965 remained unused and not that useful. A variety of other little bignum
1966 tweaks and fixes have also been made continuing on from the audit (see
1970 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
1971 associated ASN1, EVP and SSL functions and old ASN1 macros.
1974 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
1975 and this should never fail. So the return value from the use of
1976 BN_set_word() (which can fail due to needless expansion) is now deprecated;
1977 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
1980 *) BN_CTX_get() should return zero-valued bignums, providing the same
1981 initialised value as BN_new().
1982 [Geoff Thorpe, suggested by Ulf Möller]
1984 *) Support for inhibitAnyPolicy certificate extension.
1987 *) An audit of the BIGNUM code is underway, for which debugging code is
1988 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
1989 is considered valid when processing BIGNUMs, and causes execution to
1990 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
1991 further steps are taken to deliberately pollute unused data in BIGNUM
1992 structures to try and expose faulty code further on. For now, openssl will
1993 (in its default mode of operation) continue to tolerate the inconsistent
1994 forms that it has tolerated in the past, but authors and packagers should
1995 consider trying openssl and their own applications when compiled with
1996 these debugging symbols defined. It will help highlight potential bugs in
1997 their own code, and will improve the test coverage for OpenSSL itself. At
1998 some point, these tighter rules will become openssl's default to improve
1999 maintainability, though the assert()s and other overheads will remain only
2000 in debugging configurations. See bn.h for more details.
2001 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2003 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2004 that can only be obtained through BN_CTX_new() (which implicitly
2005 initialises it). The presence of this function only made it possible
2006 to overwrite an existing structure (and cause memory leaks).
2009 *) Because of the callback-based approach for implementing LHASH as a
2010 template type, lh_insert() adds opaque objects to hash-tables and
2011 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2012 to clean up those corresponding objects before destroying the hash table
2013 (and losing the object pointers). So some over-zealous constifications in
2014 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2015 objects as "const" and the lh_doall[_arg] callback wrappers are not
2016 prototyped to have "const" restrictions on the object pointers they are
2017 given (and so aren't required to cast them away any more).
2020 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2021 (speed) prefers to use its own implementation. The two implementations
2022 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2023 its object type properly exposed (MS_TM) instead of casting to/from "char
2024 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2025 aren't necessarily the greatest nomenclatures - but this is what was used
2026 internally to the implementation so I've used that for now.
2029 *) Ensure that deprecated functions do not get compiled when
2030 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2031 the self-tests were still using deprecated key-generation functions so
2032 these have been updated also.
2035 *) Reorganise PKCS#7 code to separate the digest location functionality
2036 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2037 New function PKCS7_set_digest() to set the digest type for PKCS#7
2038 digestedData type. Add additional code to correctly generate the
2039 digestedData type and add support for this type in PKCS7 initialization
2043 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2044 structure of type "other".
2047 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2048 sure the loop does correctly stop and breaking ("division by zero")
2049 modulus operations are not performed. The (pre-generated) prime
2050 table crypto/bn/bn_prime.h was already correct, but it could not be
2051 re-generated on some platforms because of the "division by zero"
2052 situation in the script.
2053 [Ralf S. Engelschall]
2055 *) Update support for ECC-based TLS ciphersuites according to
2056 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2057 SHA-1 now is only used for "small" curves (where the
2058 representation of a field element takes up to 24 bytes); for
2059 larger curves, the field element resulting from ECDH is directly
2060 used as premaster secret.
2061 [Douglas Stebila (Sun Microsystems Laboratories)]
2063 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2064 curve secp160r1 to the tests.
2065 [Douglas Stebila (Sun Microsystems Laboratories)]
2067 *) Add the possibility to load symbols globally with DSO.
2068 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2070 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2071 control of the error stack.
2074 *) Add support for STORE in ENGINE.
2077 *) Add the STORE type. The intention is to provide a common interface
2078 to certificate and key stores, be they simple file-based stores, or
2079 HSM-type store, or LDAP stores, or...
2080 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2083 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2084 pass a list of arguments to any function as well as provide a way
2085 for a function to pass data back to the caller.
2088 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2089 works like BUF_strdup() but can be used to duplicate a portion of
2090 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2094 *) Add the function sk_find_ex() which works like sk_find(), but will
2095 return an index to an element even if an exact match couldn't be
2096 found. The index is guaranteed to point at the element where the
2097 searched-for key would be inserted to preserve sorting order.
2100 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2101 takes an extra flags argument for optional functionality. Currently,
2102 the following flags are defined:
2104 OBJ_BSEARCH_VALUE_ON_NOMATCH
2105 This one gets OBJ_bsearch_ex() to return a pointer to the first
2106 element where the comparing function returns a negative or zero
2109 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2110 This one gets OBJ_bsearch_ex() to return a pointer to the first
2111 element where the comparing function returns zero. This is useful
2112 if there are more than one element where the comparing function
2116 *) Make it possible to create self-signed certificates with 'openssl ca'
2117 in such a way that the self-signed certificate becomes part of the
2118 CA database and uses the same mechanisms for serial number generation
2119 as all other certificate signing. The new flag '-selfsign' enables
2120 this functionality. Adapt CA.sh and CA.pl.in.
2123 *) Add functionality to check the public key of a certificate request
2124 against a given private. This is useful to check that a certificate
2125 request can be signed by that key (self-signing).
2128 *) Make it possible to have multiple active certificates with the same
2129 subject in the CA index file. This is done only if the keyword
2130 'unique_subject' is set to 'no' in the main CA section (default
2131 if 'CA_default') of the configuration file. The value is saved
2132 with the database itself in a separate index attribute file,
2133 named like the index file with '.attr' appended to the name.
2136 *) Generate muti valued AVAs using '+' notation in config files for
2140 *) Support for nameConstraints certificate extension.
2143 *) Support for policyConstraints certificate extension.
2146 *) Support for policyMappings certificate extension.
2149 *) Make sure the default DSA_METHOD implementation only uses its
2150 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2151 and change its own handlers to be NULL so as to remove unnecessary
2152 indirection. This lets alternative implementations fallback to the
2153 default implementation more easily.
2156 *) Support for directoryName in GeneralName related extensions
2160 *) Make it possible to link applications using Makefile.shared.
2161 Make that possible even when linking against static libraries!
2164 *) Support for single pass processing for S/MIME signing. This now
2165 means that S/MIME signing can be done from a pipe, in addition
2166 cleartext signing (multipart/signed type) is effectively streaming
2167 and the signed data does not need to be all held in memory.
2169 This is done with a new flag PKCS7_STREAM. When this flag is set
2170 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2171 is done after the data is output (and digests calculated) in
2172 SMIME_write_PKCS7().
2175 *) Add full support for -rpath/-R, both in shared libraries and
2176 applications, at least on the platforms where it's known how
2180 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2181 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2182 will now compute a table of multiples of the generator that
2183 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2184 faster (notably in the case of a single point multiplication,
2185 scalar * generator).
2186 [Nils Larsch, Bodo Moeller]
2188 *) IPv6 support for certificate extensions. The various extensions
2189 which use the IP:a.b.c.d can now take IPv6 addresses using the
2190 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2194 *) Added an ENGINE that implements RSA by performing private key
2195 exponentiations with the GMP library. The conversions to and from
2196 GMP's mpz_t format aren't optimised nor are any montgomery forms
2197 cached, and on x86 it appears OpenSSL's own performance has caught up.
2198 However there are likely to be other architectures where GMP could
2199 provide a boost. This ENGINE is not built in by default, but it can be
2200 specified at Configure time and should be accompanied by the necessary
2201 linker additions, eg;
2202 ./config -DOPENSSL_USE_GMP -lgmp
2205 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2206 testing availability of engines with "-t" - the old behaviour is
2207 produced by increasing the feature's verbosity with "-tt".
2210 *) ECDSA routines: under certain error conditions uninitialized BN objects
2211 could be freed. Solution: make sure initialization is performed early
2212 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2216 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2217 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2218 software implementations. For DSA and DH, parameter generation can
2219 also be overriden by providing the appropriate method callbacks.
2222 *) Change the "progress" mechanism used in key-generation and
2223 primality testing to functions that take a new BN_GENCB pointer in
2224 place of callback/argument pairs. The new API functions have "_ex"
2225 postfixes and the older functions are reimplemented as wrappers for
2226 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2227 declarations of the old functions to help (graceful) attempts to
2228 migrate to the new functions. Also, the new key-generation API
2229 functions operate on a caller-supplied key-structure and return
2230 success/failure rather than returning a key or NULL - this is to
2231 help make "keygen" another member function of RSA_METHOD etc.
2233 Example for using the new callback interface:
2235 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2239 BN_GENCB_set(&my_cb, my_callback, my_arg);
2241 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2242 /* For the meaning of a, b in calls to my_callback(), see the
2243 * documentation of the function that calls the callback.
2244 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2245 * my_callback should return 1 if it wants BN_is_prime_ex()
2246 * to continue, or 0 to stop.
2251 *) Change the ZLIB compression method to be stateful, and make it
2252 available to TLS with the number defined in
2253 draft-ietf-tls-compression-04.txt.
2256 *) Add the ASN.1 structures and functions for CertificatePair, which
2257 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2259 CertificatePair ::= SEQUENCE {
2260 forward [0] Certificate OPTIONAL,
2261 reverse [1] Certificate OPTIONAL,
2262 -- at least one of the pair shall be present -- }
2264 Also implement the PEM functions to read and write certificate
2265 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2267 This needed to be defined, mostly for the sake of the LDAP
2268 attribute crossCertificatePair, but may prove useful elsewhere as
2272 *) Make it possible to inhibit symlinking of shared libraries in
2273 Makefile.shared, for Cygwin's sake.
2276 *) Extend the BIGNUM API by creating a function
2277 void BN_set_negative(BIGNUM *a, int neg);
2278 and a macro that behave like
2279 int BN_is_negative(const BIGNUM *a);
2281 to avoid the need to access 'a->neg' directly in applications.
2284 *) Implement fast modular reduction for pseudo-Mersenne primes
2285 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2286 EC_GROUP_new_curve_GFp() will now automatically use this
2288 [Nils Larsch <nla@trustcenter.de>]
2290 *) Add new lock type (CRYPTO_LOCK_BN).
2293 *) Change the ENGINE framework to automatically load engines
2294 dynamically from specific directories unless they could be
2295 found to already be built in or loaded. Move all the
2296 current engines except for the cryptodev one to a new
2298 The engines in engines/ are built as shared libraries if
2299 the "shared" options was given to ./Configure or ./config.
2300 Otherwise, they are inserted in libcrypto.a.
2301 /usr/local/ssl/engines is the default directory for dynamic
2302 engines, but that can be overriden at configure time through
2303 the usual use of --prefix and/or --openssldir, and at run
2304 time with the environment variable OPENSSL_ENGINES.
2305 [Geoff Thorpe and Richard Levitte]
2307 *) Add Makefile.shared, a helper makefile to build shared
2308 libraries. Addapt Makefile.org.
2311 *) Add version info to Win32 DLLs.
2312 [Peter 'Luna' Runestig" <peter@runestig.com>]
2314 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2315 can be added using this API to created arbitrary PKCS#12
2316 files while avoiding the low level API.
2318 New options to PKCS12_create(), key or cert can be NULL and
2319 will then be omitted from the output file. The encryption
2320 algorithm NIDs can be set to -1 for no encryption, the mac
2321 iteration count can be set to 0 to omit the mac.
2323 Enhance pkcs12 utility by making the -nokeys and -nocerts
2324 options work when creating a PKCS#12 file. New option -nomac
2325 to omit the mac, NONE can be set for an encryption algorithm.
2326 New code is modified to use the enhanced PKCS12_create()
2327 instead of the low level API.
2330 *) Extend ASN1 encoder to support indefinite length constructed
2331 encoding. This can output sequences tags and octet strings in
2332 this form. Modify pk7_asn1.c to support indefinite length
2333 encoding. This is experimental and needs additional code to
2334 be useful, such as an ASN1 bio and some enhanced streaming
2337 Extend template encode functionality so that tagging is passed
2338 down to the template encoder.
2341 *) Let 'openssl req' fail if an argument to '-newkey' is not
2342 recognized instead of using RSA as a default.
2345 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2346 As these are not official, they are not included in "ALL";
2347 the "ECCdraft" ciphersuite group alias can be used to select them.
2348 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2350 *) Add ECDH engine support.
2351 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2353 *) Add ECDH in new directory crypto/ecdh/.
2354 [Douglas Stebila (Sun Microsystems Laboratories)]
2356 *) Let BN_rand_range() abort with an error after 100 iterations
2357 without success (which indicates a broken PRNG).
2360 *) Change BN_mod_sqrt() so that it verifies that the input value
2361 is really the square of the return value. (Previously,
2362 BN_mod_sqrt would show GIGO behaviour.)
2365 *) Add named elliptic curves over binary fields from X9.62, SECG,
2366 and WAP/WTLS; add OIDs that were still missing.
2368 [Sheueling Chang Shantz and Douglas Stebila
2369 (Sun Microsystems Laboratories)]
2371 *) Extend the EC library for elliptic curves over binary fields
2372 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2375 EC_GF2m_simple_method
2379 EC_GROUP_new_curve_GF2m
2380 EC_GROUP_set_curve_GF2m
2381 EC_GROUP_get_curve_GF2m
2382 EC_POINT_set_affine_coordinates_GF2m
2383 EC_POINT_get_affine_coordinates_GF2m
2384 EC_POINT_set_compressed_coordinates_GF2m
2386 Point compression for binary fields is disabled by default for
2387 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2390 As binary polynomials are represented as BIGNUMs, various members
2391 of the EC_GROUP and EC_POINT data structures can be shared
2392 between the implementations for prime fields and binary fields;
2393 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2394 are essentially identical to their ..._GFp counterparts.
2395 (For simplicity, the '..._GFp' prefix has been dropped from
2396 various internal method names.)
2398 An internal 'field_div' method (similar to 'field_mul' and
2399 'field_sqr') has been added; this is used only for binary fields.
2401 [Sheueling Chang Shantz and Douglas Stebila
2402 (Sun Microsystems Laboratories)]
2404 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2405 through methods ('mul', 'precompute_mult').
2407 The generic implementations (now internally called 'ec_wNAF_mul'
2408 and 'ec_wNAF_precomputed_mult') remain the default if these
2409 methods are undefined.
2411 [Sheueling Chang Shantz and Douglas Stebila
2412 (Sun Microsystems Laboratories)]
2414 *) New function EC_GROUP_get_degree, which is defined through
2415 EC_METHOD. For curves over prime fields, this returns the bit
2416 length of the modulus.
2418 [Sheueling Chang Shantz and Douglas Stebila
2419 (Sun Microsystems Laboratories)]
2421 *) New functions EC_GROUP_dup, EC_POINT_dup.
2422 (These simply call ..._new and ..._copy).
2424 [Sheueling Chang Shantz and Douglas Stebila
2425 (Sun Microsystems Laboratories)]
2427 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2428 Polynomials are represented as BIGNUMs (where the sign bit is not
2429 used) in the following functions [macros]:
2432 BN_GF2m_sub [= BN_GF2m_add]
2433 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2434 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2435 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2437 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2438 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2439 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2440 BN_GF2m_cmp [= BN_ucmp]
2442 (Note that only the 'mod' functions are actually for fields GF(2^m).
2443 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2445 For some functions, an the irreducible polynomial defining a
2446 field can be given as an 'unsigned int[]' with strictly
2447 decreasing elements giving the indices of those bits that are set;
2448 i.e., p[] represents the polynomial
2449 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2451 p[0] > p[1] > ... > p[k] = 0.
2452 This applies to the following functions:
2457 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2458 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2460 BN_GF2m_mod_sqrt_arr
2461 BN_GF2m_mod_solve_quad_arr
2465 Conversion can be performed by the following functions:
2470 bntest.c has additional tests for binary polynomial arithmetic.
2472 Two implementations for BN_GF2m_mod_div() are available.
2473 The default algorithm simply uses BN_GF2m_mod_inv() and
2474 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2475 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2476 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2478 [Sheueling Chang Shantz and Douglas Stebila
2479 (Sun Microsystems Laboratories)]
2481 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2482 functionality is disabled at compile-time.
2483 [Douglas Stebila <douglas.stebila@sun.com>]
2485 *) Change default behaviour of 'openssl asn1parse' so that more
2486 information is visible when viewing, e.g., a certificate:
2488 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2489 mode the content of non-printable OCTET STRINGs is output in a
2490 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2491 avoid the appearance of a printable string.
2492 [Nils Larsch <nla@trustcenter.de>]
2494 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2496 EC_GROUP_set_asn1_flag()
2497 EC_GROUP_get_asn1_flag()
2498 EC_GROUP_set_point_conversion_form()
2499 EC_GROUP_get_point_conversion_form()
2500 These control ASN1 encoding details:
2501 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2502 has been set to OPENSSL_EC_NAMED_CURVE.
2503 - Points are encoded in uncompressed form by default; options for
2504 asn1_for are as for point2oct, namely
2505 POINT_CONVERSION_COMPRESSED
2506 POINT_CONVERSION_UNCOMPRESSED
2507 POINT_CONVERSION_HYBRID
2509 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2512 EC_GROUP_get0_seed()
2513 EC_GROUP_get_seed_len()
2514 This is used only for ASN1 purposes (so far).
2515 [Nils Larsch <nla@trustcenter.de>]
2517 *) Add 'field_type' member to EC_METHOD, which holds the NID
2518 of the appropriate field type OID. The new function
2519 EC_METHOD_get_field_type() returns this value.
2520 [Nils Larsch <nla@trustcenter.de>]
2525 EC_POINT_point2hex()
2526 EC_POINT_hex2point()
2527 providing useful interfaces to EC_POINT_point2oct() and
2528 EC_POINT_oct2point().
2529 [Nils Larsch <nla@trustcenter.de>]
2531 *) Change internals of the EC library so that the functions
2532 EC_GROUP_set_generator()
2533 EC_GROUP_get_generator()
2534 EC_GROUP_get_order()
2535 EC_GROUP_get_cofactor()
2536 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2537 to methods, which would lead to unnecessary code duplication when
2538 adding different types of curves.
2539 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2541 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2542 arithmetic, and such that modified wNAFs are generated
2543 (which avoid length expansion in many cases).
2546 *) Add a function EC_GROUP_check_discriminant() (defined via
2547 EC_METHOD) that verifies that the curve discriminant is non-zero.
2549 Add a function EC_GROUP_check() that makes some sanity tests
2550 on a EC_GROUP, its generator and order. This includes
2551 EC_GROUP_check_discriminant().
2552 [Nils Larsch <nla@trustcenter.de>]
2554 *) Add ECDSA in new directory crypto/ecdsa/.
2556 Add applications 'openssl ecparam' and 'openssl ecdsa'
2557 (these are based on 'openssl dsaparam' and 'openssl dsa').
2559 ECDSA support is also included in various other files across the
2560 library. Most notably,
2561 - 'openssl req' now has a '-newkey ecdsa:file' option;
2562 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2563 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2564 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2565 them suitable for ECDSA where domain parameters must be
2566 extracted before the specific public key;
2567 - ECDSA engine support has been added.
2568 [Nils Larsch <nla@trustcenter.de>]
2570 *) Include some named elliptic curves, and add OIDs from X9.62,
2571 SECG, and WAP/WTLS. Each curve can be obtained from the new
2573 EC_GROUP_new_by_curve_name(),
2574 and the list of available named curves can be obtained with
2575 EC_get_builtin_curves().
2576 Also add a 'curve_name' member to EC_GROUP objects, which can be
2578 EC_GROUP_set_curve_name()
2579 EC_GROUP_get_curve_name()
2580 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2582 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2583 was actually never needed) and in BN_mul(). The removal in BN_mul()
2584 required a small change in bn_mul_part_recursive() and the addition
2585 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2586 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2587 bn_sub_words() and bn_add_words() except they take arrays with
2591 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2593 *) Cleanse PEM buffers before freeing them since they may contain
2595 [Benjamin Bennett <ben@psc.edu>]
2597 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2598 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2599 authentication-only ciphersuites.
2602 *) Since AES128 and AES256 share a single mask bit in the logic of
2603 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2604 kludge to work properly if AES128 is available and AES256 isn't.
2607 *) Expand security boundary to match 1.1.1 module.
2610 *) Remove redundant features: hash file source, editing of test vectors
2611 modify fipsld to use external fips_premain.c signature.
2614 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2615 run algorithm test programs.
2618 *) Make algorithm test programs more tolerant of whitespace.
2621 *) Have SSL/TLS server implementation tolerate "mismatched" record
2622 protocol version while receiving ClientHello even if the
2623 ClientHello is fragmented. (The server can't insist on the
2624 particular protocol version it has chosen before the ServerHello
2625 message has informed the client about his choice.)
2628 *) Load error codes if they are not already present instead of using a
2629 static variable. This allows them to be cleanly unloaded and reloaded.
2632 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2634 *) Introduce limits to prevent malicious keys being able to
2635 cause a denial of service. (CVE-2006-2940)
2636 [Steve Henson, Bodo Moeller]
2638 *) Fix ASN.1 parsing of certain invalid structures that can result
2639 in a denial of service. (CVE-2006-2937) [Steve Henson]
2641 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2642 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2644 *) Fix SSL client code which could crash if connecting to a
2645 malicious SSLv2 server. (CVE-2006-4343)
2646 [Tavis Ormandy and Will Drewry, Google Security Team]
2648 *) Change ciphersuite string processing so that an explicit
2649 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
2650 will no longer include "AES128-SHA"), and any other similar
2651 ciphersuite (same bitmap) from *other* protocol versions (so that
2652 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
2653 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
2654 changes from 0.9.8b and 0.9.8d.
2657 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
2659 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2660 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2662 *) Change the Unix randomness entropy gathering to use poll() when
2663 possible instead of select(), since the latter has some
2664 undesirable limitations.
2665 [Darryl Miles via Richard Levitte and Bodo Moeller]
2667 *) Disable rogue ciphersuites:
2669 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2670 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2671 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2673 The latter two were purportedly from
2674 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2677 Also deactive the remaining ciphersuites from
2678 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2679 unofficial, and the ID has long expired.
2682 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2683 dual-core machines) and other potential thread-safety issues.
2686 Changes between 0.9.7i and 0.9.7j [04 May 2006]
2688 *) Adapt fipsld and the build system to link against the validated FIPS
2689 module in FIPS mode.
2692 *) Fixes for VC++ 2005 build under Windows.
2695 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
2696 from a Windows bash shell such as MSYS. It is autodetected from the
2697 "config" script when run from a VC++ environment. Modify standard VC++
2698 build to use fipscanister.o from the GNU make build.
2701 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
2703 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
2704 The value now differs depending on if you build for FIPS or not.
2705 BEWARE! A program linked with a shared FIPSed libcrypto can't be
2706 safely run with a non-FIPSed libcrypto, as it may crash because of
2707 the difference induced by this change.
2710 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
2712 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2713 (part of SSL_OP_ALL). This option used to disable the
2714 countermeasure against man-in-the-middle protocol-version
2715 rollback in the SSL 2.0 server implementation, which is a bad
2716 idea. (CVE-2005-2969)
2718 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2719 for Information Security, National Institute of Advanced Industrial
2720 Science and Technology [AIST], Japan)]
2722 *) Minimal support for X9.31 signatures and PSS padding modes. This is
2723 mainly for FIPS compliance and not fully integrated at this stage.
2726 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
2727 the exponentiation using a fixed-length exponent. (Otherwise,
2728 the information leaked through timing could expose the secret key
2729 after many signatures; cf. Bleichenbacher's attack on DSA with
2733 *) Make a new fixed-window mod_exp implementation the default for
2734 RSA, DSA, and DH private-key operations so that the sequence of
2735 squares and multiplies and the memory access pattern are
2736 independent of the particular secret key. This will mitigate
2737 cache-timing and potential related attacks.
2739 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
2740 and this is automatically used by BN_mod_exp_mont() if the new flag
2741 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
2742 will use this BN flag for private exponents unless the flag
2743 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
2744 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
2746 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
2748 *) Change the client implementation for SSLv23_method() and
2749 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
2750 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
2751 (Previously, the SSL 2.0 backwards compatible Client Hello
2752 message format would be used even with SSL_OP_NO_SSLv2.)
2755 *) Add support for smime-type MIME parameter in S/MIME messages which some
2759 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
2760 a threadsafe manner. Modify rsa code to use new function and add calls
2761 to dsa and dh code (which had race conditions before).
2764 *) Include the fixed error library code in the C error file definitions
2765 instead of fixing them up at runtime. This keeps the error code
2766 structures constant.
2769 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
2771 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
2774 *) Fixes for newer kerberos headers. NB: the casts are needed because
2775 the 'length' field is signed on one version and unsigned on another
2776 with no (?) obvious way to tell the difference, without these VC++
2777 complains. Also the "definition" of FAR (blank) is no longer included
2778 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
2779 some needed definitions.
2782 *) Undo Cygwin change.
2785 *) Added support for proxy certificates according to RFC 3820.
2786 Because they may be a security thread to unaware applications,
2787 they must be explicitely allowed in run-time. See
2788 docs/HOWTO/proxy_certificates.txt for further information.
2791 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
2793 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
2794 server and client random values. Previously
2795 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
2796 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
2798 This change has negligible security impact because:
2800 1. Server and client random values still have 24 bytes of pseudo random
2803 2. Server and client random values are sent in the clear in the initial
2806 3. The master secret is derived using the premaster secret (48 bytes in
2807 size for static RSA ciphersuites) as well as client server and random
2810 The OpenSSL team would like to thank the UK NISCC for bringing this issue
2813 [Stephen Henson, reported by UK NISCC]
2815 *) Use Windows randomness collection on Cygwin.
2818 *) Fix hang in EGD/PRNGD query when communication socket is closed
2819 prematurely by EGD/PRNGD.
2820 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
2822 *) Prompt for pass phrases when appropriate for PKCS12 input format.
2825 *) Back-port of selected performance improvements from development
2826 branch, as well as improved support for PowerPC platforms.
2829 *) Add lots of checks for memory allocation failure, error codes to indicate
2830 failure and freeing up memory if a failure occurs.
2831 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
2833 *) Add new -passin argument to dgst.
2836 *) Perform some character comparisons of different types in X509_NAME_cmp:
2837 this is needed for some certificates that reencode DNs into UTF8Strings
2838 (in violation of RFC3280) and can't or wont issue name rollover
2842 *) Make an explicit check during certificate validation to see that
2843 the CA setting in each certificate on the chain is correct. As a
2844 side effect always do the following basic checks on extensions,
2845 not just when there's an associated purpose to the check:
2847 - if there is an unhandled critical extension (unless the user
2848 has chosen to ignore this fault)
2849 - if the path length has been exceeded (if one is set at all)
2850 - that certain extensions fit the associated purpose (if one has
2854 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
2856 *) Avoid a race condition when CRLs are checked in a multi threaded
2857 environment. This would happen due to the reordering of the revoked
2858 entries during signature checking and serial number lookup. Now the
2859 encoding is cached and the serial number sort performed under a lock.
2860 Add new STACK function sk_is_sorted().
2863 *) Add Delta CRL to the extension code.
2866 *) Various fixes to s3_pkt.c so alerts are sent properly.
2867 [David Holmes <d.holmes@f5.com>]
2869 *) Reduce the chances of duplicate issuer name and serial numbers (in
2870 violation of RFC3280) using the OpenSSL certificate creation utilities.
2871 This is done by creating a random 64 bit value for the initial serial
2872 number when a serial number file is created or when a self signed
2873 certificate is created using 'openssl req -x509'. The initial serial
2874 number file is created using 'openssl x509 -next_serial' in CA.pl
2875 rather than being initialized to 1.
2878 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
2880 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
2881 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
2882 [Joe Orton, Steve Henson]
2884 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
2886 [Joe Orton, Steve Henson]
2888 *) Make it possible to have multiple active certificates with the same
2889 subject in the CA index file. This is done only if the keyword
2890 'unique_subject' is set to 'no' in the main CA section (default
2891 if 'CA_default') of the configuration file. The value is saved
2892 with the database itself in a separate index attribute file,
2893 named like the index file with '.attr' appended to the name.
2896 *) X509 verify fixes. Disable broken certificate workarounds when
2897 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
2898 keyUsage extension present. Don't accept CRLs with unhandled critical
2899 extensions: since verify currently doesn't process CRL extensions this
2900 rejects a CRL with *any* critical extensions. Add new verify error codes
2904 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
2905 A clarification of RFC2560 will require the use of OCTET STRINGs and
2906 some implementations cannot handle the current raw format. Since OpenSSL
2907 copies and compares OCSP nonces as opaque blobs without any attempt at
2908 parsing them this should not create any compatibility issues.
2911 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
2912 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
2913 this HMAC (and other) operations are several times slower than OpenSSL
2917 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
2918 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
2920 *) Use the correct content when signing type "other".
2923 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
2925 *) Fix various bugs revealed by running the NISCC test suite:
2927 Stop out of bounds reads in the ASN1 code when presented with
2928 invalid tags (CVE-2003-0543 and CVE-2003-0544).
2930 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
2932 If verify callback ignores invalid public key errors don't try to check
2933 certificate signature with the NULL public key.
2937 *) New -ignore_err option in ocsp application to stop the server
2938 exiting on the first error in a request.
2941 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
2942 if the server requested one: as stated in TLS 1.0 and SSL 3.0
2946 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
2947 extra data after the compression methods not only for TLS 1.0
2948 but also for SSL 3.0 (as required by the specification).
2949 [Bodo Moeller; problem pointed out by Matthias Loepfe]
2951 *) Change X509_certificate_type() to mark the key as exported/exportable
2952 when it's 512 *bits* long, not 512 bytes.
2955 *) Change AES_cbc_encrypt() so it outputs exact multiple of
2956 blocks during encryption.
2959 *) Various fixes to base64 BIO and non blocking I/O. On write
2960 flushes were not handled properly if the BIO retried. On read
2961 data was not being buffered properly and had various logic bugs.
2962 This also affects blocking I/O when the data being decoded is a
2966 *) Various S/MIME bugfixes and compatibility changes:
2967 output correct application/pkcs7 MIME type if
2968 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
2969 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
2970 of files as .eml work). Correctly handle very long lines in MIME
2974 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
2976 *) Countermeasure against the Klima-Pokorny-Rosa extension of
2977 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
2978 a protocol version number mismatch like a decryption error
2979 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
2982 *) Turn on RSA blinding by default in the default implementation
2983 to avoid a timing attack. Applications that don't want it can call
2984 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
2985 They would be ill-advised to do so in most cases.
2986 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
2988 *) Change RSA blinding code so that it works when the PRNG is not
2989 seeded (in this case, the secret RSA exponent is abused as
2990 an unpredictable seed -- if it is not unpredictable, there
2991 is no point in blinding anyway). Make RSA blinding thread-safe
2992 by remembering the creator's thread ID in rsa->blinding and
2993 having all other threads use local one-time blinding factors
2994 (this requires more computation than sharing rsa->blinding, but
2995 avoids excessive locking; and if an RSA object is not shared
2996 between threads, blinding will still be very fast).
2999 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3000 ENGINE as defaults for all supported algorithms irrespective of
3001 the 'flags' parameter. 'flags' is now honoured, so applications
3002 should make sure they are passing it correctly.
3005 *) Target "mingw" now allows native Windows code to be generated in
3006 the Cygwin environment as well as with the MinGW compiler.
3009 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3011 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3012 via timing by performing a MAC computation even if incorrrect
3013 block cipher padding has been found. This is a countermeasure
3014 against active attacks where the attacker has to distinguish
3015 between bad padding and a MAC verification error. (CVE-2003-0078)
3017 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3018 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3019 Martin Vuagnoux (EPFL, Ilion)]
3021 *) Make the no-err option work as intended. The intention with no-err
3022 is not to have the whole error stack handling routines removed from
3023 libcrypto, it's only intended to remove all the function name and
3024 reason texts, thereby removing some of the footprint that may not
3025 be interesting if those errors aren't displayed anyway.
3027 NOTE: it's still possible for any application or module to have it's
3028 own set of error texts inserted. The routines are there, just not
3029 used by default when no-err is given.
3032 *) Add support for FreeBSD on IA64.
3033 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3035 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3036 Kerberos function mit_des_cbc_cksum(). Before this change,
3037 the value returned by DES_cbc_cksum() was like the one from
3038 mit_des_cbc_cksum(), except the bytes were swapped.
3039 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3041 *) Allow an application to disable the automatic SSL chain building.
3042 Before this a rather primitive chain build was always performed in
3043 ssl3_output_cert_chain(): an application had no way to send the
3044 correct chain if the automatic operation produced an incorrect result.
3046 Now the chain builder is disabled if either:
3048 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3050 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3052 The reasoning behind this is that an application would not want the
3053 auto chain building to take place if extra chain certificates are
3054 present and it might also want a means of sending no additional
3055 certificates (for example the chain has two certificates and the
3059 *) Add the possibility to build without the ENGINE framework.
3060 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3062 *) Under Win32 gmtime() can return NULL: check return value in
3063 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3066 *) DSA routines: under certain error conditions uninitialized BN objects
3067 could be freed. Solution: make sure initialization is performed early
3068 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3069 Nils Larsch <nla@trustcenter.de> via PR#459)
3072 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3073 checked on reconnect on the client side, therefore session resumption
3074 could still fail with a "ssl session id is different" error. This
3075 behaviour is masked when SSL_OP_ALL is used due to
3076 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3077 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3078 followup to PR #377.
3081 *) IA-32 assembler support enhancements: unified ELF targets, support
3082 for SCO/Caldera platforms, fix for Cygwin shared build.
3085 *) Add support for FreeBSD on sparc64. As a consequence, support for
3086 FreeBSD on non-x86 processors is separate from x86 processors on
3087 the config script, much like the NetBSD support.
3088 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3090 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3092 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3095 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3096 code (06) was taken as the first octet of the session ID and the last
3097 octet was ignored consequently. As a result SSLv2 client side session
3098 caching could not have worked due to the session ID mismatch between
3100 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3104 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3105 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3109 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3110 seems that in spite of existing for more than a year, many application
3111 author have done nothing to provide the necessary callbacks, which
3112 means that this particular engine will not work properly anywhere.
3113 This is a very unfortunate situation which forces us, in the name
3114 of usability, to give the hw_ncipher.c a static lock, which is part
3116 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3117 appear in 0.9.8 or later. We EXPECT application authors to have
3118 dealt properly with this when 0.9.8 is released (unless we actually
3119 make such changes in the libcrypto locking code that changes will
3120 have to be made anyway).
3123 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3124 octets have been read, EOF or an error occurs. Without this change
3125 some truncated ASN1 structures will not produce an error.
3128 *) Disable Heimdal support, since it hasn't been fully implemented.
3129 Still give the possibility to force the use of Heimdal, but with
3130 warnings and a request that patches get sent to openssl-dev.
3133 *) Add the VC-CE target, introduce the WINCE sysname, and add
3134 INSTALL.WCE and appropriate conditionals to make it build.
3135 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3137 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3138 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3139 edit numbers of the version.
3140 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3142 *) Introduce safe string copy and catenation functions
3143 (BUF_strlcpy() and BUF_strlcat()).
3144 [Ben Laurie (CHATS) and Richard Levitte]
3146 *) Avoid using fixed-size buffers for one-line DNs.
3147 [Ben Laurie (CHATS)]
3149 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3150 resizing buffers containing secrets, and use where appropriate.
3151 [Ben Laurie (CHATS)]
3153 *) Avoid using fixed size buffers for configuration file location.
3154 [Ben Laurie (CHATS)]
3156 *) Avoid filename truncation for various CA files.
3157 [Ben Laurie (CHATS)]
3159 *) Use sizeof in preference to magic numbers.
3160 [Ben Laurie (CHATS)]
3162 *) Avoid filename truncation in cert requests.
3163 [Ben Laurie (CHATS)]
3165 *) Add assertions to check for (supposedly impossible) buffer
3167 [Ben Laurie (CHATS)]
3169 *) Don't cache truncated DNS entries in the local cache (this could
3170 potentially lead to a spoofing attack).
3171 [Ben Laurie (CHATS)]
3173 *) Fix various buffers to be large enough for hex/decimal
3174 representations in a platform independent manner.
3175 [Ben Laurie (CHATS)]
3177 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3178 resizing buffers containing secrets, and use where appropriate.
3179 [Ben Laurie (CHATS)]
3181 *) Add BIO_indent() to avoid much slightly worrying code to do
3183 [Ben Laurie (CHATS)]
3185 *) Convert sprintf()/BIO_puts() to BIO_printf().
3186 [Ben Laurie (CHATS)]
3188 *) buffer_gets() could terminate with the buffer only half
3190 [Ben Laurie (CHATS)]
3192 *) Add assertions to prevent user-supplied crypto functions from
3193 overflowing internal buffers by having large block sizes, etc.
3194 [Ben Laurie (CHATS)]
3196 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3198 [Ben Laurie (CHATS)]
3200 *) Eliminate unused copy of key in RC4.
3201 [Ben Laurie (CHATS)]
3203 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3204 [Ben Laurie (CHATS)]
3206 *) Fix off-by-one error in EGD path.
3207 [Ben Laurie (CHATS)]
3209 *) If RANDFILE path is too long, ignore instead of truncating.
3210 [Ben Laurie (CHATS)]
3212 *) Eliminate unused and incorrectly sized X.509 structure
3214 [Ben Laurie (CHATS)]
3216 *) Eliminate unused and dangerous function knumber().
3217 [Ben Laurie (CHATS)]
3219 *) Eliminate unused and dangerous structure, KSSL_ERR.
3220 [Ben Laurie (CHATS)]
3222 *) Protect against overlong session ID context length in an encoded
3223 session object. Since these are local, this does not appear to be
3225 [Ben Laurie (CHATS)]
3227 *) Change from security patch (see 0.9.6e below) that did not affect
3228 the 0.9.6 release series:
3230 Remote buffer overflow in SSL3 protocol - an attacker could
3231 supply an oversized master key in Kerberos-enabled versions.
3233 [Ben Laurie (CHATS)]
3235 *) Change the SSL kerb5 codes to match RFC 2712.
3238 *) Make -nameopt work fully for req and add -reqopt switch.
3239 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3241 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3242 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3244 *) Make sure tests can be performed even if the corresponding algorithms
3245 have been removed entirely. This was also the last step to make
3246 OpenSSL compilable with DJGPP under all reasonable conditions.
3247 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3249 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3250 to allow version independent disabling of normally unselected ciphers,
3251 which may be activated as a side-effect of selecting a single cipher.
3253 (E.g., cipher list string "RSA" enables ciphersuites that are left
3254 out of "ALL" because they do not provide symmetric encryption.
3255 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3256 [Lutz Jaenicke, Bodo Moeller]
3258 *) Add appropriate support for separate platform-dependent build
3259 directories. The recommended way to make a platform-dependent
3260 build directory is the following (tested on Linux), maybe with
3263 # Place yourself outside of the OpenSSL source tree. In
3264 # this example, the environment variable OPENSSL_SOURCE
3265 # is assumed to contain the absolute OpenSSL source directory.
3266 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3267 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3268 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3269 mkdir -p `dirname $F`
3270 ln -s $OPENSSL_SOURCE/$F $F
3273 To be absolutely sure not to disturb the source tree, a "make clean"
3274 is a good thing. If it isn't successfull, don't worry about it,
3275 it probably means the source directory is very clean.
3278 *) Make sure any ENGINE control commands make local copies of string
3279 pointers passed to them whenever necessary. Otherwise it is possible
3280 the caller may have overwritten (or deallocated) the original string
3281 data when a later ENGINE operation tries to use the stored values.
3282 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3284 *) Improve diagnostics in file reading and command-line digests.
3285 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3287 *) Add AES modes CFB and OFB to the object database. Correct an
3288 error in AES-CFB decryption.
3291 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3292 allows existing EVP_CIPHER_CTX structures to be reused after
3293 calling EVP_*Final(). This behaviour is used by encryption
3294 BIOs and some applications. This has the side effect that
3295 applications must explicitly clean up cipher contexts with
3296 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3299 *) Check the values of dna and dnb in bn_mul_recursive before calling
3300 bn_mul_comba (a non zero value means the a or b arrays do not contain
3301 n2 elements) and fallback to bn_mul_normal if either is not zero.
3304 *) Fix escaping of non-ASCII characters when using the -subj option
3305 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3308 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3309 form for "surname", serialNumber has no short form.
3310 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3311 therefore remove "mail" short name for "internet 7".
3312 The OID for unique identifiers in X509 certificates is
3313 x500UniqueIdentifier, not uniqueIdentifier.
3314 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3317 *) Add an "init" command to the ENGINE config module and auto initialize
3318 ENGINEs. Without any "init" command the ENGINE will be initialized
3319 after all ctrl commands have been executed on it. If init=1 the
3320 ENGINE is initailized at that point (ctrls before that point are run
3321 on the uninitialized ENGINE and after on the initialized one). If
3322 init=0 then the ENGINE will not be iniatialized at all.
3325 *) Fix the 'app_verify_callback' interface so that the user-defined
3326 argument is actually passed to the callback: In the
3327 SSL_CTX_set_cert_verify_callback() prototype, the callback
3328 declaration has been changed from
3331 int (*cb)(X509_STORE_CTX *,void *);
3332 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3333 i=s->ctx->app_verify_callback(&ctx)
3334 has been changed into
3335 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3337 To update applications using SSL_CTX_set_cert_verify_callback(),
3338 a dummy argument can be added to their callback functions.
3339 [D. K. Smetters <smetters@parc.xerox.com>]
3341 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3342 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3344 *) Add and OPENSSL_LOAD_CONF define which will cause
3345 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3346 This allows older applications to transparently support certain
3347 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3348 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3349 load the config file and OPENSSL_add_all_algorithms_conf() which will
3350 always load it have also been added.
3353 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
3354 Adjust NIDs and EVP layer.
3355 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3357 *) Config modules support in openssl utility.
3359 Most commands now load modules from the config file,
3360 though in a few (such as version) this isn't done
3361 because it couldn't be used for anything.
3363 In the case of ca and req the config file used is
3364 the same as the utility itself: that is the -config
3365 command line option can be used to specify an
3369 *) Move default behaviour from OPENSSL_config(). If appname is NULL
3370 use "openssl_conf" if filename is NULL use default openssl config file.
3373 *) Add an argument to OPENSSL_config() to allow the use of an alternative
3374 config section name. Add a new flag to tolerate a missing config file
3375 and move code to CONF_modules_load_file().
3378 *) Support for crypto accelerator cards from Accelerated Encryption
3379 Processing, www.aep.ie. (Use engine 'aep')
3380 The support was copied from 0.9.6c [engine] and adapted/corrected
3381 to work with the new engine framework.
3382 [AEP Inc. and Richard Levitte]
3384 *) Support for SureWare crypto accelerator cards from Baltimore
3385 Technologies. (Use engine 'sureware')
3386 The support was copied from 0.9.6c [engine] and adapted
3387 to work with the new engine framework.
3390 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
3391 make the newer ENGINE framework commands for the CHIL engine work.
3392 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
3394 *) Make it possible to produce shared libraries on ReliantUNIX.
3395 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
3397 *) Add the configuration target debug-linux-ppro.
3398 Make 'openssl rsa' use the general key loading routines
3399 implemented in apps.c, and make those routines able to
3400 handle the key format FORMAT_NETSCAPE and the variant
3402 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3404 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3405 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3407 *) Add -keyform to rsautl, and document -engine.
3408 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3410 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3411 BIO_R_NO_SUCH_FILE error code rather than the generic
3412 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3415 *) Add new functions
3417 ERR_peek_last_error_line
3418 ERR_peek_last_error_line_data.
3419 These are similar to
3422 ERR_peek_error_line_data,
3423 but report on the latest error recorded rather than the first one
3424 still in the error queue.
3425 [Ben Laurie, Bodo Moeller]
3427 *) default_algorithms option in ENGINE config module. This allows things
3429 default_algorithms = ALL
3430 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3433 *) Prelminary ENGINE config module.
3436 *) New experimental application configuration code.
3439 *) Change the AES code to follow the same name structure as all other
3440 symmetric ciphers, and behave the same way. Move everything to
3441 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3442 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3444 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3445 [Ben Laurie and Theo de Raadt]
3447 *) Add option to output public keys in req command.
3448 [Massimiliano Pala madwolf@openca.org]
3450 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3451 (up to about 10% better than before for P-192 and P-224).
3454 *) New functions/macros
3456 SSL_CTX_set_msg_callback(ctx, cb)
3457 SSL_CTX_set_msg_callback_arg(ctx, arg)
3458 SSL_set_msg_callback(ssl, cb)
3459 SSL_set_msg_callback_arg(ssl, arg)
3461 to request calling a callback function
3463 void cb(int write_p, int version, int content_type,
3464 const void *buf, size_t len, SSL *ssl, void *arg)
3466 whenever a protocol message has been completely received
3467 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3468 protocol version according to which the SSL library interprets
3469 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3470 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3471 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3472 specification (change_cipher_spec(20), alert(21), handshake(22)).
3473 'buf' and 'len' point to the actual message, 'ssl' to the
3474 SSL object, and 'arg' is the application-defined value set by
3475 SSL[_CTX]_set_msg_callback_arg().
3477 'openssl s_client' and 'openssl s_server' have new '-msg' options
3478 to enable a callback that displays all protocol messages.
3481 *) Change the shared library support so shared libraries are built as
3482 soon as the corresponding static library is finished, and thereby get
3483 openssl and the test programs linked against the shared library.
3484 This still only happens when the keyword "shard" has been given to
3485 the configuration scripts.
3487 NOTE: shared library support is still an experimental thing, and
3488 backward binary compatibility is still not guaranteed.
3489 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3491 *) Add support for Subject Information Access extension.
3492 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3494 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3495 additional bytes when new memory had to be allocated, not just
3496 when reusing an existing buffer.
3499 *) New command line and configuration option 'utf8' for the req command.
3500 This allows field values to be specified as UTF8 strings.
3503 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3504 runs for the former and machine-readable output for the latter.
3507 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3508 of the e-mail address in the DN (i.e., it will go into a certificate
3509 extension only). The new configuration file option 'email_in_dn = no'
3510 has the same effect.
3511 [Massimiliano Pala madwolf@openca.org]
3513 *) Change all functions with names starting with des_ to be starting
3514 with DES_ instead. Add wrappers that are compatible with libdes,
3515 but are named _ossl_old_des_*. Finally, add macros that map the
3516 des_* symbols to the corresponding _ossl_old_des_* if libdes
3517 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3518 desired, the des_* symbols will be mapped to DES_*, with one
3521 Since we provide two compatibility mappings, the user needs to
3522 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3523 compatibility is desired. The default (i.e., when that macro
3524 isn't defined) is OpenSSL 0.9.6c compatibility.
3526 There are also macros that enable and disable the support of old
3527 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3528 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3529 are defined, the default will apply: to support the old des routines.
3531 In either case, one must include openssl/des.h to get the correct
3532 definitions. Do not try to just include openssl/des_old.h, that
3535 NOTE: This is a major break of an old API into a new one. Software
3536 authors are encouraged to switch to the DES_ style functions. Some
3537 time in the future, des_old.h and the libdes compatibility functions
3538 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
3539 default), and then completely removed.
3542 *) Test for certificates which contain unsupported critical extensions.
3543 If such a certificate is found during a verify operation it is
3544 rejected by default: this behaviour can be overridden by either
3545 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
3546 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
3547 X509_supported_extension() has also been added which returns 1 if a
3548 particular extension is supported.
3551 *) Modify the behaviour of EVP cipher functions in similar way to digests
3552 to retain compatibility with existing code.
3555 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
3556 compatibility with existing code. In particular the 'ctx' parameter does
3557 not have to be to be initialized before the call to EVP_DigestInit() and
3558 it is tidied up after a call to EVP_DigestFinal(). New function
3559 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
3560 EVP_MD_CTX_copy() changed to not require the destination to be
3561 initialized valid and new function EVP_MD_CTX_copy_ex() added which
3562 requires the destination to be valid.
3564 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
3565 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
3568 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
3569 so that complete 'Handshake' protocol structures are kept in memory
3570 instead of overwriting 'msg_type' and 'length' with 'body' data.
3573 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
3574 [Massimo Santin via Richard Levitte]
3576 *) Major restructuring to the underlying ENGINE code. This includes
3577 reduction of linker bloat, separation of pure "ENGINE" manipulation
3578 (initialisation, etc) from functionality dealing with implementations
3579 of specific crypto iterfaces. This change also introduces integrated
3580 support for symmetric ciphers and digest implementations - so ENGINEs
3581 can now accelerate these by providing EVP_CIPHER and EVP_MD
3582 implementations of their own. This is detailed in crypto/engine/README
3583 as it couldn't be adequately described here. However, there are a few
3584 API changes worth noting - some RSA, DSA, DH, and RAND functions that
3585 were changed in the original introduction of ENGINE code have now
3586 reverted back - the hooking from this code to ENGINE is now a good
3587 deal more passive and at run-time, operations deal directly with
3588 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
3589 dereferencing through an ENGINE pointer any more. Also, the ENGINE
3590 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
3591 they were not being used by the framework as there is no concept of a
3592 BIGNUM_METHOD and they could not be generalised to the new
3593 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
3594 ENGINE_cpy() has been removed as it cannot be consistently defined in
3598 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
3601 *) Change mkdef.pl to sort symbols that get the same entry number,
3602 and make sure the automatically generated functions ERR_load_*
3603 become part of libeay.num as well.
3606 *) New function SSL_renegotiate_pending(). This returns true once
3607 renegotiation has been requested (either SSL_renegotiate() call
3608 or HelloRequest/ClientHello receveived from the peer) and becomes
3609 false once a handshake has been completed.
3610 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
3611 sends a HelloRequest, but does not ensure that a handshake takes
3612 place. SSL_renegotiate_pending() is useful for checking if the
3613 client has followed the request.)
3616 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
3617 By default, clients may request session resumption even during
3618 renegotiation (if session ID contexts permit); with this option,
3619 session resumption is possible only in the first handshake.
3621 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
3622 more bits available for options that should not be part of
3623 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
3626 *) Add some demos for certificate and certificate request creation.
3629 *) Make maximum certificate chain size accepted from the peer application
3630 settable (SSL*_get/set_max_cert_list()), as proposed by
3631 "Douglas E. Engert" <deengert@anl.gov>.
3634 *) Add support for shared libraries for Unixware-7
3635 (Boyd Lynn Gerber <gerberb@zenez.com>).
3638 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
3639 be done prior to destruction. Use this to unload error strings from
3640 ENGINEs that load their own error strings. NB: This adds two new API
3641 functions to "get" and "set" this destroy handler in an ENGINE.
3644 *) Alter all existing ENGINE implementations (except "openssl" and
3645 "openbsd") to dynamically instantiate their own error strings. This
3646 makes them more flexible to be built both as statically-linked ENGINEs
3647 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
3648 Also, add stub code to each that makes building them as self-contained
3649 shared-libraries easier (see README.ENGINE).
3652 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
3653 implementations into applications that are completely implemented in
3654 self-contained shared-libraries. The "dynamic" ENGINE exposes control
3655 commands that can be used to configure what shared-library to load and
3656 to control aspects of the way it is handled. Also, made an update to
3657 the README.ENGINE file that brings its information up-to-date and
3658 provides some information and instructions on the "dynamic" ENGINE
3659 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
3662 *) Make it possible to unload ranges of ERR strings with a new
3663 "ERR_unload_strings" function.
3666 *) Add a copy() function to EVP_MD.
3669 *) Make EVP_MD routines take a context pointer instead of just the
3670 md_data void pointer.
3673 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
3674 that the digest can only process a single chunk of data
3675 (typically because it is provided by a piece of
3676 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
3677 is only going to provide a single chunk of data, and hence the
3678 framework needn't accumulate the data for oneshot drivers.
3681 *) As with "ERR", make it possible to replace the underlying "ex_data"
3682 functions. This change also alters the storage and management of global
3683 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
3684 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
3685 index counters. The API functions that use this state have been changed
3686 to take a "class_index" rather than pointers to the class's local STACK
3687 and counter, and there is now an API function to dynamically create new
3688 classes. This centralisation allows us to (a) plug a lot of the
3689 thread-safety problems that existed, and (b) makes it possible to clean
3690 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
3691 such data would previously have always leaked in application code and
3692 workarounds were in place to make the memory debugging turn a blind eye
3693 to it. Application code that doesn't use this new function will still
3694 leak as before, but their memory debugging output will announce it now
3695 rather than letting it slide.
3697 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
3698 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
3699 has a return value to indicate success or failure.
3702 *) Make it possible to replace the underlying "ERR" functions such that the
3703 global state (2 LHASH tables and 2 locks) is only used by the "default"
3704 implementation. This change also adds two functions to "get" and "set"
3705 the implementation prior to it being automatically set the first time
projects / openssl.git / blob