5 Changes between 1.0.0 and 1.1.0 [xx XXX xxxx]
7 *) Add an "external" session cache for debugging purposes to s_server. This
8 should help trace issues which normally are only apparent in deployed
12 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
13 a few changes are required:
15 Add SSL_OP_NO_TLSv1_1 flag.
17 Update version checking logic to handle version 1.1.
18 Add explicit IV handling (ported from DTLS code).
19 Add command line options to s_client/s_server.
22 *) Experiemental password based recipient info support for CMS library:
26 *) Split password based encryption into PBES2 and PBKDF2 functions. This
27 neatly separates the code into cipher and PBE sections and is required
28 for some algorithms that split PBES2 into separate pieces (such as
32 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
33 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
34 BIO_set_cipher() and some obscure PEM functions were changed so they
35 can now return an error. The RAND changes required a change to the
36 RAND_METHOD structure.
39 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
40 a gcc attribute to warn if the result of a function is ignored. This
41 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
42 whose return value is often ignored.
45 Changes between 0.9.8m (?) and 1.0.0 [xx XXX xxxx]
47 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
50 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
51 output hashes compatible with older versions of OpenSSL.
52 [Willy Weisz <weisz@vcpc.univie.ac.at>]
54 *) Fix compression algorithm handling: if resuming a session use the
55 compression algorithm of the resumed session instead of determining
56 it from client hello again. Don't allow server to change algorithm.
59 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
60 change when encrypting or decrypting.
63 *) Add load_crls() function to apps tidying load_certs() too. Add option
64 to verify utility to allow additional CRLs to be included.
67 *) Update OCSP request code to permit adding custom headers to the request:
68 some responders need this.
71 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
73 [Julia Lawall <julia@diku.dk>]
75 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
76 needlessly dereferenced structures, used obsolete functions and
77 didn't handle all updated verify codes correctly.
80 *) Disable MD2 in the default configuration.
83 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
84 indicate the initial BIO being pushed or popped. This makes it possible
85 to determine whether the BIO is the one explicitly called or as a result
86 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
87 it handles reference counts correctly and doesn't zero out the I/O bio
88 when it is not being explicitly popped. WARNING: applications which
89 included workarounds for the old buggy behaviour will need to be modified
90 or they could free up already freed BIOs.
93 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
94 renaming to all platforms (within the 0.9.8 branch, this was
95 done conditionally on Netware platforms to avoid a name clash).
96 [Guenter <lists@gknw.net>]
98 *) Add ECDHE and PSK support to DTLS.
99 [Michael Tuexen <tuexen@fh-muenster.de>]
101 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
105 *) Add "missing" function EVP_MD_flags() (without this the only way to
106 retrieve a digest flags is by accessing the structure directly. Update
107 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
108 or cipher is registered as in the "from" argument. Print out all
109 registered digests in the dgst usage message instead of manually
110 attempting to work them out.
113 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
114 this allows the use of compression and extensions. Change default cipher
115 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
116 by default unless an application cipher string requests it.
119 *) Alter match criteria in PKCS12_parse(). It used to try to use local
120 key ids to find matching certificates and keys but some PKCS#12 files
121 don't follow the (somewhat unwritten) rules and this strategy fails.
122 Now just gather all certificates together and the first private key
123 then look for the first certificate that matches the key.
126 *) Support use of registered digest and cipher names for dgst and cipher
127 commands instead of having to add each one as a special case. So now
134 openssl dgst -sha256 foo
136 and this works for ENGINE based algorithms too.
140 *) Update Gost ENGINE to support parameter files.
141 [Victor B. Wagner <vitus@cryptocom.ru>]
143 *) Support GeneralizedTime in ca utility.
144 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
146 *) Enhance the hash format used for certificate directory links. The new
147 form uses the canonical encoding (meaning equivalent names will work
148 even if they aren't identical) and uses SHA1 instead of MD5. This form
149 is incompatible with the older format and as a result c_rehash should
150 be used to rebuild symbolic links.
153 *) Make PKCS#8 the default write format for private keys, replacing the
154 traditional format. This form is standardised, more secure and doesn't
155 include an implicit MD5 dependency.
158 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
159 committed to OpenSSL should pass this lot as a minimum.
162 *) Add session ticket override functionality for use by EAP-FAST.
163 [Jouni Malinen <j@w1.fi>]
165 *) Modify HMAC functions to return a value. Since these can be implemented
166 in an ENGINE errors can occur.
169 *) Type-checked OBJ_bsearch_ex.
172 *) Type-checked OBJ_bsearch. Also some constification necessitated
173 by type-checking. Still to come: TXT_DB, bsearch(?),
174 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
178 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
179 seconds to a tm structure directly, instead of going through OS
180 specific date routines. This avoids any issues with OS routines such
181 as the year 2038 bug. New *_adj() functions for ASN1 time structures
182 and X509_time_adj_ex() to cover the extended range. The existing
183 X509_time_adj() is still usable and will no longer have any date issues.
186 *) Delta CRL support. New use deltas option which will attempt to locate
187 and search any appropriate delta CRLs available.
189 This work was sponsored by Google.
192 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
193 code and add additional score elements. Validate alternate CRL paths
194 as part of the CRL checking and indicate a new error "CRL path validation
195 error" in this case. Applications wanting additional details can use
196 the verify callback and check the new "parent" field. If this is not
197 NULL CRL path validation is taking place. Existing applications wont
198 see this because it requires extended CRL support which is off by
201 This work was sponsored by Google.
204 *) Support for freshest CRL extension.
206 This work was sponsored by Google.
209 *) Initial indirect CRL support. Currently only supported in the CRLs
210 passed directly and not via lookup. Process certificate issuer
211 CRL entry extension and lookup CRL entries by bother issuer name
212 and serial number. Check and process CRL issuer entry in IDP extension.
214 This work was sponsored by Google.
217 *) Add support for distinct certificate and CRL paths. The CRL issuer
218 certificate is validated separately in this case. Only enabled if
219 an extended CRL support flag is set: this flag will enable additional
220 CRL functionality in future.
222 This work was sponsored by Google.
225 *) Add support for policy mappings extension.
227 This work was sponsored by Google.
230 *) Fixes to pathlength constraint, self issued certificate handling,
231 policy processing to align with RFC3280 and PKITS tests.
233 This work was sponsored by Google.
236 *) Support for name constraints certificate extension. DN, email, DNS
237 and URI types are currently supported.
239 This work was sponsored by Google.
242 *) To cater for systems that provide a pointer-based thread ID rather
243 than numeric, deprecate the current numeric thread ID mechanism and
244 replace it with a structure and associated callback type. This
245 mechanism allows a numeric "hash" to be extracted from a thread ID in
246 either case, and on platforms where pointers are larger than 'long',
247 mixing is done to help ensure the numeric 'hash' is usable even if it
248 can't be guaranteed unique. The default mechanism is to use "&errno"
249 as a pointer-based thread ID to distinguish between threads.
251 Applications that want to provide their own thread IDs should now use
252 CRYPTO_THREADID_set_callback() to register a callback that will call
253 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
255 Note that ERR_remove_state() is now deprecated, because it is tied
256 to the assumption that thread IDs are numeric. ERR_remove_state(0)
257 to free the current thread's error state should be replaced by
258 ERR_remove_thread_state(NULL).
260 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
261 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
262 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
263 application was previously providing a numeric thread callback that
264 was inappropriate for distinguishing threads, then uniqueness might
265 have been obtained with &errno that happened immediately in the
266 intermediate development versions of OpenSSL; this is no longer the
267 case, the numeric thread callback will now override the automatic use
269 [Geoff Thorpe, with help from Bodo Moeller]
271 *) Initial support for different CRL issuing certificates. This covers a
272 simple case where the self issued certificates in the chain exist and
273 the real CRL issuer is higher in the existing chain.
275 This work was sponsored by Google.
278 *) Removed effectively defunct crypto/store from the build.
281 *) Revamp of STACK to provide stronger type-checking. Still to come:
282 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
283 ASN1_STRING, CONF_VALUE.
286 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
287 RAM on SSL connections. This option can save about 34k per idle SSL.
290 *) Revamp of LHASH to provide stronger type-checking. Still to come:
291 STACK, TXT_DB, bsearch, qsort.
294 *) Initial support for Cryptographic Message Syntax (aka CMS) based
295 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
296 support for data, signedData, compressedData, digestedData and
297 encryptedData, envelopedData types included. Scripts to check against
298 RFC4134 examples draft and interop and consistency checks of many
299 content types and variants.
302 *) Add options to enc utility to support use of zlib compression BIO.
305 *) Extend mk1mf to support importing of options and assembly language
306 files from Configure script, currently only included in VC-WIN32.
307 The assembly language rules can now optionally generate the source
308 files from the associated perl scripts.
311 *) Implement remaining functionality needed to support GOST ciphersuites.
312 Interop testing has been performed using CryptoPro implementations.
313 [Victor B. Wagner <vitus@cryptocom.ru>]
315 *) s390x assembler pack.
318 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
322 *) Implement Opaque PRF Input TLS extension as specified in
323 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
324 official specification yet and no extension type assignment by
325 IANA exists, this extension (for now) will have to be explicitly
326 enabled when building OpenSSL by providing the extension number
327 to use. For example, specify an option
329 -DTLSEXT_TYPE_opaque_prf_input=0x9527
331 to the "config" or "Configure" script to enable the extension,
332 assuming extension number 0x9527 (which is a completely arbitrary
333 and unofficial assignment based on the MD5 hash of the Internet
334 Draft). Note that by doing so, you potentially lose
335 interoperability with other TLS implementations since these might
336 be using the same extension number for other purposes.
338 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
339 opaque PRF input value to use in the handshake. This will create
340 an interal copy of the length-'len' string at 'src', and will
341 return non-zero for success.
343 To get more control and flexibility, provide a callback function
346 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
347 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
351 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
354 Callback function 'cb' will be called in handshakes, and is
355 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
356 Argument 'arg' is for application purposes (the value as given to
357 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
358 be provided to the callback function). The callback function
359 has to return non-zero to report success: usually 1 to use opaque
360 PRF input just if possible, or 2 to enforce use of the opaque PRF
361 input. In the latter case, the library will abort the handshake
362 if opaque PRF input is not successfully negotiated.
364 Arguments 'peerinput' and 'len' given to the callback function
365 will always be NULL and 0 in the case of a client. A server will
366 see the client's opaque PRF input through these variables if
367 available (NULL and 0 otherwise). Note that if the server
368 provides an opaque PRF input, the length must be the same as the
369 length of the client's opaque PRF input.
371 Note that the callback function will only be called when creating
372 a new session (session resumption can resume whatever was
373 previously negotiated), and will not be called in SSL 2.0
374 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
375 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
376 for applications that need to enforce opaque PRF input.
380 *) Update ssl code to support digests other than SHA1+MD5 for handshake
383 [Victor B. Wagner <vitus@cryptocom.ru>]
385 *) Add RFC4507 support to OpenSSL. This includes the corrections in
386 RFC4507bis. The encrypted ticket format is an encrypted encoded
387 SSL_SESSION structure, that way new session features are automatically
390 If a client application caches session in an SSL_SESSION structure
391 support is transparent because tickets are now stored in the encoded
394 The SSL_CTX structure automatically generates keys for ticket
395 protection in servers so again support should be possible
396 with no application modification.
398 If a client or server wishes to disable RFC4507 support then the option
399 SSL_OP_NO_TICKET can be set.
401 Add a TLS extension debugging callback to allow the contents of any client
402 or server extensions to be examined.
404 This work was sponsored by Google.
407 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
408 OpenSSL should now compile cleanly on gcc 4.2
409 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
411 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
412 support including streaming MAC support: this is required for GOST
414 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
416 *) Add option -stream to use PKCS#7 streaming in smime utility. New
417 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
418 to output in BER and PEM format.
421 *) Experimental support for use of HMAC via EVP_PKEY interface. This
422 allows HMAC to be handled via the EVP_DigestSign*() interface. The
423 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
424 ENGINE support for HMAC keys which are unextractable. New -mac and
425 -macopt options to dgst utility.
428 *) New option -sigopt to dgst utility. Update dgst to use
429 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
430 alternative signing paramaters such as X9.31 or PSS in the dgst
434 *) Change ssl_cipher_apply_rule(), the internal function that does
435 the work each time a ciphersuite string requests enabling
436 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
437 removing ("!foo+bar") a class of ciphersuites: Now it maintains
438 the order of disabled ciphersuites such that those ciphersuites
439 that most recently went from enabled to disabled not only stay
440 in order with respect to each other, but also have higher priority
441 than other disabled ciphersuites the next time ciphersuites are
444 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
445 the same ciphersuites as with "HIGH" alone, but in a specific
446 order where the PSK ciphersuites come first (since they are the
447 most recently disabled ciphersuites when "HIGH" is parsed).
449 Also, change ssl_create_cipher_list() (using this new
450 funcionality) such that between otherwise identical
451 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
455 *) Change ssl_create_cipher_list() so that it automatically
456 arranges the ciphersuites in reasonable order before starting
457 to process the rule string. Thus, the definition for "DEFAULT"
458 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
459 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
460 This makes it much easier to arrive at a reasonable default order
461 in applications for which anonymous ciphers are OK (meaning
462 that you can't actually use DEFAULT).
463 [Bodo Moeller; suggested by Victor Duchovni]
465 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
466 processing) into multiple integers instead of setting
467 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
468 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
469 (These masks as well as the individual bit definitions are hidden
470 away into the non-exported interface ssl/ssl_locl.h, so this
471 change to the definition of the SSL_CIPHER structure shouldn't
472 affect applications.) This give us more bits for each of these
473 categories, so there is no longer a need to coagulate AES128 and
474 AES256 into a single algorithm bit, and to coagulate Camellia128
475 and Camellia256 into a single algorithm bit, which has led to all
478 Thus, among other things, the kludge introduced in 0.9.7m and
479 0.9.8e for masking out AES256 independently of AES128 or masking
480 out Camellia256 independently of AES256 is not needed here in 0.9.9.
482 With the change, we also introduce new ciphersuite aliases that
483 so far were missing: "AES128", "AES256", "CAMELLIA128", and
487 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
488 Use the leftmost N bytes of the signature input if the input is
489 larger than the prime q (with N being the size in bytes of q).
492 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
493 it yet and it is largely untested.
496 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
499 *) Initial incomplete changes to avoid need for function casts in OpenSSL
500 some compilers (gcc 4.2 and later) reject their use. Safestack is
501 reimplemented. Update ASN1 to avoid use of legacy functions.
504 *) Win32/64 targets are linked with Winsock2.
507 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
508 to external functions. This can be used to increase CRL handling
509 efficiency especially when CRLs are very large by (for example) storing
510 the CRL revoked certificates in a database.
513 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
514 new CRLs added to a directory can be used. New command line option
515 -verify_return_error to s_client and s_server. This causes real errors
516 to be returned by the verify callback instead of carrying on no matter
517 what. This reflects the way a "real world" verify callback would behave.
520 *) GOST engine, supporting several GOST algorithms and public key formats.
521 Kindly donated by Cryptocom.
524 *) Partial support for Issuing Distribution Point CRL extension. CRLs
525 partitioned by DP are handled but no indirect CRL or reason partitioning
526 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
527 selected via a scoring technique which handles IDP and AKID in CRLs.
530 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
531 will ultimately be used for all verify operations: this will remove the
532 X509_STORE dependency on certificate verification and allow alternative
533 lookup methods. X509_STORE based implementations of these two callbacks.
536 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
537 Modify get_crl() to find a valid (unexpired) CRL if possible.
540 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
541 this would be called X509_CRL_cmp() but that name is already used by
542 a function that just compares CRL issuer names. Cache several CRL
543 extensions in X509_CRL structure and cache CRLDP in X509.
546 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
547 this maps equivalent X509_NAME structures into a consistent structure.
548 Name comparison can then be performed rapidly using memcmp().
551 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
555 *) Allow digests to supply their own micalg string for S/MIME type using
556 the ctrl EVP_MD_CTRL_MICALG.
559 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
560 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
561 ctrl. It can then customise the structure before and/or after signing
565 *) New function OBJ_add_sigid() to allow application defined signature OIDs
566 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
567 to free up any added signature OIDs.
570 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
571 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
572 digest and cipher tables. New options added to openssl utility:
573 list-message-digest-algorithms and list-cipher-algorithms.
576 *) Change the array representation of binary polynomials: the list
577 of degrees of non-zero coefficients is now terminated with -1.
578 Previously it was terminated with 0, which was also part of the
579 value; thus, the array representation was not applicable to
580 polynomials where t^0 has coefficient zero. This change makes
581 the array representation useful in a more general context.
584 *) Various modifications and fixes to SSL/TLS cipher string
585 handling. For ECC, the code now distinguishes between fixed ECDH
586 with RSA certificates on the one hand and with ECDSA certificates
587 on the other hand, since these are separate ciphersuites. The
588 unused code for Fortezza ciphersuites has been removed.
590 For consistency with EDH, ephemeral ECDH is now called "EECDH"
591 (not "ECDHE"). For consistency with the code for DH
592 certificates, use of ECDH certificates is now considered ECDH
593 authentication, not RSA or ECDSA authentication (the latter is
594 merely the CA's signing algorithm and not actively used in the
597 The temporary ciphersuite alias "ECCdraft" is no longer
598 available, and ECC ciphersuites are no longer excluded from "ALL"
599 and "DEFAULT". The following aliases now exist for RFC 4492
600 ciphersuites, most of these by analogy with the DH case:
602 kECDHr - ECDH cert, signed with RSA
603 kECDHe - ECDH cert, signed with ECDSA
604 kECDH - ECDH cert (signed with either RSA or ECDSA)
605 kEECDH - ephemeral ECDH
606 ECDH - ECDH cert or ephemeral ECDH
612 AECDH - anonymous ECDH
613 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
617 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
618 Use correct micalg parameters depending on digest(s) in signed message.
621 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
622 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
625 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
626 an engine to register a method. Add ENGINE lookups for methods and
627 functional reference processing.
630 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
631 EVP_{Sign,Verify}* which allow an application to customise the signature
635 *) New -resign option to smime utility. This adds one or more signers
636 to an existing PKCS#7 signedData structure. Also -md option to use an
637 alternative message digest algorithm for signing.
640 *) Tidy up PKCS#7 routines and add new functions to make it easier to
641 create PKCS7 structures containing multiple signers. Update smime
642 application to support multiple signers.
645 *) New -macalg option to pkcs12 utility to allow setting of an alternative
649 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
650 Reorganize PBE internals to lookup from a static table using NIDs,
651 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
652 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
653 PRF which will be automatically used with PBES2.
656 *) Replace the algorithm specific calls to generate keys in "req" with the
660 *) Update PKCS#7 enveloped data routines to use new API. This is now
661 supported by any public key method supporting the encrypt operation. A
662 ctrl is added to allow the public key algorithm to examine or modify
663 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
667 *) Add a ctrl to asn1 method to allow a public key algorithm to express
668 a default digest type to use. In most cases this will be SHA1 but some
669 algorithms (such as GOST) need to specify an alternative digest. The
670 return value indicates how strong the prefernce is 1 means optional and
671 2 is mandatory (that is it is the only supported type). Modify
672 ASN1_item_sign() to accept a NULL digest argument to indicate it should
673 use the default md. Update openssl utilities to use the default digest
674 type for signing if it is not explicitly indicated.
677 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
678 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
679 signing method from the key type. This effectively removes the link
680 between digests and public key types.
683 *) Add an OID cross reference table and utility functions. Its purpose is to
684 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
685 rsaEncryption. This will allow some of the algorithm specific hackery
686 needed to use the correct OID to be removed.
689 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
690 structures for PKCS7_sign(). They are now set up by the relevant public
694 *) Add provisional EC pkey method with support for ECDSA and ECDH.
697 *) Add support for key derivation (agreement) in the API, DH method and
701 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
702 public and private key formats. As a side effect these add additional
703 command line functionality not previously available: DSA signatures can be
704 generated and verified using pkeyutl and DH key support and generation in
709 [Oliver Tappe <zooey@hirschkaefer.de>]
711 *) New make target "install_html_docs" installs HTML renditions of the
713 [Oliver Tappe <zooey@hirschkaefer.de>]
715 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
716 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
717 support key and parameter generation and add initial key generation
718 functionality for RSA.
721 *) Add functions for main EVP_PKEY_method operations. The undocumented
722 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
723 EVP_PKEY_{encrypt,decrypt}_old.
726 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
727 key API, doesn't do much yet.
730 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
731 public key algorithms. New option to openssl utility:
732 "list-public-key-algorithms" to print out info.
735 *) Implement the Supported Elliptic Curves Extension for
736 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
739 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
740 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
743 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
744 utilities such as rsa, dsa, dsaparam etc except they process any key
748 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
749 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
750 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
754 *) Initial support for pluggable public key ASN1.
755 De-spaghettify the public key ASN1 handling. Move public and private
756 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
757 algorithm specific handling to a single module within the relevant
758 algorithm directory. Add functions to allow (near) opaque processing
759 of public and private key structures.
762 *) Implement the Supported Point Formats Extension for
763 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
766 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
767 for the psk identity [hint] and the psk callback functions to the
768 SSL_SESSION, SSL and SSL_CTX structure.
771 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
775 SSL_CTX_use_psk_identity_hint
776 SSL_get_psk_identity_hint
778 SSL_use_psk_identity_hint
780 [Mika Kousa and Pasi Eronen of Nokia Corporation]
782 *) Add RFC 3161 compliant time stamp request creation, response generation
783 and response verification functionality.
784 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
786 *) Add initial support for TLS extensions, specifically for the server_name
787 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
788 have new members for a host name. The SSL data structure has an
789 additional member SSL_CTX *initial_ctx so that new sessions can be
790 stored in that context to allow for session resumption, even after the
791 SSL has been switched to a new SSL_CTX in reaction to a client's
792 server_name extension.
794 New functions (subject to change):
797 SSL_get_servername_type()
800 New CTRL codes and macros (subject to change):
802 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
803 - SSL_CTX_set_tlsext_servername_callback()
804 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
805 - SSL_CTX_set_tlsext_servername_arg()
806 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
808 openssl s_client has a new '-servername ...' option.
810 openssl s_server has new options '-servername_host ...', '-cert2 ...',
811 '-key2 ...', '-servername_fatal' (subject to change). This allows
812 testing the HostName extension for a specific single host name ('-cert'
813 and '-key' remain fallbacks for handshakes without HostName
814 negotiation). If the unrecogninzed_name alert has to be sent, this by
815 default is a warning; it becomes fatal with the '-servername_fatal'
818 [Peter Sylvester, Remy Allais, Christophe Renou]
820 *) Whirlpool hash implementation is added.
823 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
824 bn(64,32). Because of instruction set limitations it doesn't have
825 any negative impact on performance. This was done mostly in order
826 to make it possible to share assembler modules, such as bn_mul_mont
827 implementations, between 32- and 64-bit builds without hassle.
830 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
831 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
835 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
836 dedicated Montgomery multiplication procedure, is introduced.
837 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
838 "64-bit" performance on certain 32-bit targets.
841 *) New option SSL_OP_NO_COMP to disable use of compression selectively
842 in SSL structures. New SSL ctrl to set maximum send fragment size.
843 Save memory by seeting the I/O buffer sizes dynamically instead of
844 using the maximum available value.
847 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
848 in addition to the text details.
851 *) Very, very preliminary EXPERIMENTAL support for printing of general
852 ASN1 structures. This currently produces rather ugly output and doesn't
853 handle several customised structures at all.
856 *) Integrated support for PVK file format and some related formats such
857 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
858 these in the 'rsa' and 'dsa' utilities.
861 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
864 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
865 place for the (very old) "NETSCAPE" format certificates which are now
866 handled using new ASN1 code equivalents.
869 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
870 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
871 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
874 *) Modify CRL distribution points extension code to print out previously
875 unsupported fields. Enhance extension setting code to allow setting of
879 *) Add print and set support for Issuing Distribution Point CRL extension.
882 *) Change 'Configure' script to enable Camellia by default.
885 Changes between 0.9.8l (?) and 0.9.8m (?) [xx XXX xxxx]
887 *) Handle TLS versions 2.0 and later properly and correctly use the
888 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
889 off ancient servers have a habit of sticking around for a while...
892 *) Modify compression code so it frees up structures without using the
893 ex_data callbacks. This works around a problem where some applications
894 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
895 restarting) then use compression (e.g. SSL with compression) later.
896 This results in significant per-connection memory leaks and
897 has caused some security issues including CVE-2008-1678 and
901 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
902 connect (but not renegotiate) with servers which do not support RI.
903 Until RI is more widely deployed this option is enabled by default.
906 *) Add "missing" ssl ctrls to clear options and mode.
909 *) If client attempts to renegotiate and doesn't support RI respond with
910 a no_renegotiation alert as required by draft-ietf-tls-renegotiation.
911 Some renegotiating TLS clients will continue a connection gracefully
912 when they receive the alert. Unfortunately OpenSSL mishandled
913 this alert and would hang waiting for a server hello which it will never
914 receive. Now we treat a received no_renegotiation alert as a fatal
915 error. This is because applications requesting a renegotiation might well
916 expect it to succeed and would have no code in place to handle the server
917 denying it so the only safe thing to do is to terminate the connection.
920 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
921 peer supports secure renegotiation and 0 otherwise. Print out peer
922 renegotiation support in s_client/s_server.
925 *) Replace the highly broken and deprecated SPKAC certification method with
926 the updated NID creation version. This should correctly handle UTF8.
929 *) Implement draft-ietf-tls-renegotiation-03. Re-enable
930 renegotiation but require the extension as needed. Unfortunately,
931 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION turns out to be a
932 bad idea. It has been replaced by
933 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
934 SSL_CTX_set_options(). This is really not recommended unless you
935 know what you are doing.
936 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
938 *) Fixes to stateless session resumption handling. Use initial_ctx when
939 issuing and attempting to decrypt tickets in case it has changed during
940 servername handling. Use a non-zero length session ID when attempting
941 stateless session resumption: this makes it possible to determine if
942 a resumption has occurred immediately after receiving server hello
943 (several places in OpenSSL subtly assume this) instead of later in
947 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
948 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
949 fixes for a few places where the return code is not checked
951 [Julia Lawall <julia@diku.dk>]
953 *) Add --strict-warnings option to Configure script to include devteam
954 warnings in other configurations.
957 *) Add support for --libdir option and LIBDIR variable in makefiles. This
958 makes it possible to install openssl libraries in locations which
959 have names other than "lib", for example "/usr/lib64" which some
961 [Steve Henson, based on patch from Jeremy Utley]
963 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
964 X690 8.9.12 and can produce some misleading textual output of OIDs.
965 [Steve Henson, reported by Dan Kaminsky]
967 *) Delete MD2 from algorithm tables. This follows the recommendation in
968 several standards that it is not used in new applications due to
969 several cryptographic weaknesses. For binary compatibility reasons
970 the MD2 API is still compiled in by default.
973 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
977 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
978 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
980 [Guenter <lists@gknw.net>]
982 *) Fix the server certificate chain building code to use X509_verify_cert(),
983 it used to have an ad-hoc builder which was unable to cope with anything
984 other than a simple chain.
985 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
987 *) Don't check self signed certificate signatures in X509_verify_cert()
988 by default (a flag can override this): it just wastes time without
989 adding any security. As a useful side effect self signed root CAs
990 with non-FIPS digests are now usable in FIPS mode.
993 *) In dtls1_process_out_of_seq_message() the check if the current message
994 is already buffered was missing. For every new message was memory
995 allocated, allowing an attacker to perform an denial of service attack
996 with sending out of seq handshake messages until there is no memory
997 left. Additionally every future messege was buffered, even if the
998 sequence number made no sense and would be part of another handshake.
999 So only messages with sequence numbers less than 10 in advance will be
1000 buffered. (CVE-2009-1378)
1001 [Robin Seggelmann, discovered by Daniel Mentz]
1003 *) Records are buffered if they arrive with a future epoch to be
1004 processed after finishing the corresponding handshake. There is
1005 currently no limitation to this buffer allowing an attacker to perform
1006 a DOS attack with sending records with future epochs until there is no
1007 memory left. This patch adds the pqueue_size() function to detemine
1008 the size of a buffer and limits the record buffer to 100 entries.
1010 [Robin Seggelmann, discovered by Daniel Mentz]
1012 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1013 parent structure is freed. (CVE-2009-1379)
1016 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1017 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1020 [Ilya O. <vrghost@gmail.com>]
1022 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1024 *) Disable renegotiation completely - this fixes a severe security
1025 problem (CVE-2009-3555) at the cost of breaking all
1026 renegotiation. Renegotiation can be re-enabled by setting
1027 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1028 run-time. This is really not recommended unless you know what
1032 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1034 *) Don't set val to NULL when freeing up structures, it is freed up by
1035 underlying code. If sizeof(void *) > sizeof(long) this can result in
1036 zeroing past the valid field. (CVE-2009-0789)
1037 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1039 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1040 checked correctly. This would allow some invalid signed attributes to
1041 appear to verify correctly. (CVE-2009-0591)
1042 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1044 *) Reject UniversalString and BMPString types with invalid lengths. This
1045 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1046 a legal length. (CVE-2009-0590)
1049 *) Set S/MIME signing as the default purpose rather than setting it
1050 unconditionally. This allows applications to override it at the store
1054 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1055 to handle some structures.
1058 *) Improve efficiency of mem_gets: don't search whole buffer each time
1060 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1062 *) New -hex option for openssl rand.
1065 *) Print out UTF8String and NumericString when parsing ASN1.
1068 *) Support NumericString type for name components.
1071 *) Allow CC in the environment to override the automatically chosen
1072 compiler. Note that nothing is done to ensure flags work with the
1076 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1078 *) Properly check EVP_VerifyFinal() and similar return values
1080 [Ben Laurie, Bodo Moeller, Google Security Team]
1082 *) Enable TLS extensions by default.
1085 *) Allow the CHIL engine to be loaded, whether the application is
1086 multithreaded or not. (This does not release the developer from the
1087 obligation to set up the dynamic locking callbacks.)
1088 [Sander Temme <sander@temme.net>]
1090 *) Use correct exit code if there is an error in dgst command.
1091 [Steve Henson; problem pointed out by Roland Dirlewanger]
1093 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1094 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1097 *) Add experimental JPAKE support, including demo authentication in
1098 s_client and s_server.
1101 *) Set the comparison function in v3_addr_canonize().
1102 [Rob Austein <sra@hactrn.net>]
1104 *) Add support for XMPP STARTTLS in s_client.
1105 [Philip Paeps <philip@freebsd.org>]
1107 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1108 to ensure that even with this option, only ciphersuites in the
1109 server's preference list will be accepted. (Note that the option
1110 applies only when resuming a session, so the earlier behavior was
1111 just about the algorithm choice for symmetric cryptography.)
1114 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1116 *) Fix NULL pointer dereference if a DTLS server received
1117 ChangeCipherSpec as first record (CVE-2009-1386).
1120 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1121 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1124 *) The fix in 0.9.8c that supposedly got rid of unsafe
1125 double-checked locking was incomplete for RSA blinding,
1126 addressing just one layer of what turns out to have been
1127 doubly unsafe triple-checked locking.
1129 So now fix this for real by retiring the MONT_HELPER macro
1130 in crypto/rsa/rsa_eay.c.
1132 [Bodo Moeller; problem pointed out by Marius Schilder]
1134 *) Various precautionary measures:
1136 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1138 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1139 (NB: This would require knowledge of the secret session ticket key
1140 to exploit, in which case you'd be SOL either way.)
1142 - Change bn_nist.c so that it will properly handle input BIGNUMs
1143 outside the expected range.
1145 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1148 [Neel Mehta, Bodo Moeller]
1150 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1151 the load fails. Useful for distros.
1152 [Ben Laurie and the FreeBSD team]
1154 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1157 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1160 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1162 This work was sponsored by Logica.
1165 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1166 keystores. Support for SSL/TLS client authentication too.
1167 Not compiled unless enable-capieng specified to Configure.
1169 This work was sponsored by Logica.
1172 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1173 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1174 attribute creation routines such as certifcate requests and PKCS#12
1178 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1180 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1181 handshake which could lead to a cilent crash as found using the
1182 Codenomicon TLS test suite (CVE-2008-1672)
1183 [Steve Henson, Mark Cox]
1185 *) Fix double free in TLS server name extensions which could lead to
1186 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1189 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1191 Clear the error queue to ensure that error entries left from
1192 older function calls do not interfere with the correct operation.
1193 [Lutz Jaenicke, Erik de Castro Lopo]
1195 *) Remove root CA certificates of commercial CAs:
1197 The OpenSSL project does not recommend any specific CA and does not
1198 have any policy with respect to including or excluding any CA.
1199 Therefore it does not make any sense to ship an arbitrary selection
1200 of root CA certificates with the OpenSSL software.
1203 *) RSA OAEP patches to fix two separate invalid memory reads.
1204 The first one involves inputs when 'lzero' is greater than
1205 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1206 before the beginning of from). The second one involves inputs where
1207 the 'db' section contains nothing but zeroes (there is a one-byte
1208 invalid read after the end of 'db').
1209 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1211 *) Partial backport from 0.9.9-dev:
1213 Introduce bn_mul_mont (dedicated Montgomery multiplication
1214 procedure) as a candidate for BIGNUM assembler implementation.
1215 While 0.9.9-dev uses assembler for various architectures, only
1216 x86_64 is available by default here in the 0.9.8 branch, and
1217 32-bit x86 is available through a compile-time setting.
1219 To try the 32-bit x86 assembler implementation, use Configure
1220 option "enable-montasm" (which exists only for this backport).
1222 As "enable-montasm" for 32-bit x86 disclaims code stability
1223 anyway, in this constellation we activate additional code
1224 backported from 0.9.9-dev for further performance improvements,
1225 namely BN_from_montgomery_word. (To enable this otherwise,
1226 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1228 [Andy Polyakov (backport partially by Bodo Moeller)]
1230 *) Add TLS session ticket callback. This allows an application to set
1231 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1232 values. This is useful for key rollover for example where several key
1233 sets may exist with different names.
1236 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1237 This was broken until now in 0.9.8 releases, such that the only way
1238 a registered ENGINE could be used (assuming it initialises
1239 successfully on the host) was to explicitly set it as the default
1240 for the relevant algorithms. This is in contradiction with 0.9.7
1241 behaviour and the documentation. With this fix, when an ENGINE is
1242 registered into a given algorithm's table of implementations, the
1243 'uptodate' flag is reset so that auto-discovery will be used next
1244 time a new context for that algorithm attempts to select an
1246 [Ian Lister (tweaked by Geoff Thorpe)]
1248 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1249 implemention in the following ways:
1251 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1254 Lack of BER streaming support means one pass streaming processing is
1255 only supported if data is detached: setting the streaming flag is
1256 ignored for embedded content.
1258 CMS support is disabled by default and must be explicitly enabled
1259 with the enable-cms configuration option.
1262 *) Update the GMP engine glue to do direct copies between BIGNUM and
1263 mpz_t when openssl and GMP use the same limb size. Otherwise the
1264 existing "conversion via a text string export" trick is still used.
1265 [Paul Sheer <paulsheer@gmail.com>]
1267 *) Zlib compression BIO. This is a filter BIO which compressed and
1268 uncompresses any data passed through it.
1271 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1272 RFC3394 compatible AES key wrapping.
1275 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1276 sets string data without copying. X509_ALGOR_set0() and
1277 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1278 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1279 from an X509_ATTRIBUTE structure optionally checking it occurs only
1280 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1284 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1285 to get the expected BN_FLG_CONSTTIME behavior.
1286 [Bodo Moeller (Google)]
1290 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1291 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1292 - added some more tests to do_tests.pl
1293 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1294 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1295 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1296 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1297 - various changes to netware.pl to enable gcc-cross builds on Win32
1299 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1300 - various changes to fix missing prototype warnings
1301 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1302 - added AES, WHIRLPOOL and CPUID assembler code to build files
1303 - added missing AES assembler make rules to mk1mf.pl
1304 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1305 [Guenter Knauf <eflash@gmx.net>]
1307 *) Implement certificate status request TLS extension defined in RFC3546.
1308 A client can set the appropriate parameters and receive the encoded
1309 OCSP response via a callback. A server can query the supplied parameters
1310 and set the encoded OCSP response in the callback. Add simplified examples
1311 to s_client and s_server.
1314 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1316 *) Fix various bugs:
1317 + Binary incompatibility of ssl_ctx_st structure
1318 + DTLS interoperation with non-compliant servers
1319 + Don't call get_session_cb() without proposed session
1320 + Fix ia64 assembler code
1321 [Andy Polyakov, Steve Henson]
1323 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1325 *) DTLS Handshake overhaul. There were longstanding issues with
1326 OpenSSL DTLS implementation, which were making it impossible for
1327 RFC 4347 compliant client to communicate with OpenSSL server.
1328 Unfortunately just fixing these incompatibilities would "cut off"
1329 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1330 server keeps tolerating non RFC compliant syntax. The opposite is
1331 not true, 0.9.8f client can not communicate with earlier server.
1332 This update even addresses CVE-2007-4995.
1335 *) Changes to avoid need for function casts in OpenSSL: some compilers
1336 (gcc 4.2 and later) reject their use.
1337 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1340 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1341 RFC4507bis. The encrypted ticket format is an encrypted encoded
1342 SSL_SESSION structure, that way new session features are automatically
1345 If a client application caches session in an SSL_SESSION structure
1346 support is transparent because tickets are now stored in the encoded
1349 The SSL_CTX structure automatically generates keys for ticket
1350 protection in servers so again support should be possible
1351 with no application modification.
1353 If a client or server wishes to disable RFC4507 support then the option
1354 SSL_OP_NO_TICKET can be set.
1356 Add a TLS extension debugging callback to allow the contents of any client
1357 or server extensions to be examined.
1359 This work was sponsored by Google.
1362 *) Add initial support for TLS extensions, specifically for the server_name
1363 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1364 have new members for a host name. The SSL data structure has an
1365 additional member SSL_CTX *initial_ctx so that new sessions can be
1366 stored in that context to allow for session resumption, even after the
1367 SSL has been switched to a new SSL_CTX in reaction to a client's
1368 server_name extension.
1370 New functions (subject to change):
1372 SSL_get_servername()
1373 SSL_get_servername_type()
1376 New CTRL codes and macros (subject to change):
1378 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1379 - SSL_CTX_set_tlsext_servername_callback()
1380 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1381 - SSL_CTX_set_tlsext_servername_arg()
1382 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1384 openssl s_client has a new '-servername ...' option.
1386 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1387 '-key2 ...', '-servername_fatal' (subject to change). This allows
1388 testing the HostName extension for a specific single host name ('-cert'
1389 and '-key' remain fallbacks for handshakes without HostName
1390 negotiation). If the unrecogninzed_name alert has to be sent, this by
1391 default is a warning; it becomes fatal with the '-servername_fatal'
1394 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1396 *) Add AES and SSE2 assembly language support to VC++ build.
1399 *) Mitigate attack on final subtraction in Montgomery reduction.
1402 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1403 (which previously caused an internal error).
1406 *) Squeeze another 10% out of IGE mode when in != out.
1409 *) AES IGE mode speedup.
1410 [Dean Gaudet (Google)]
1412 *) Add the Korean symmetric 128-bit cipher SEED (see
1413 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1414 add SEED ciphersuites from RFC 4162:
1416 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1417 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1418 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1419 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1421 To minimize changes between patchlevels in the OpenSSL 0.9.8
1422 series, SEED remains excluded from compilation unless OpenSSL
1423 is configured with 'enable-seed'.
1424 [KISA, Bodo Moeller]
1426 *) Mitigate branch prediction attacks, which can be practical if a
1427 single processor is shared, allowing a spy process to extract
1428 information. For detailed background information, see
1429 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1430 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1431 and Necessary Software Countermeasures"). The core of the change
1432 are new versions BN_div_no_branch() and
1433 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1434 respectively, which are slower, but avoid the security-relevant
1435 conditional branches. These are automatically called by BN_div()
1436 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1437 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1438 remove a conditional branch.
1440 BN_FLG_CONSTTIME is the new name for the previous
1441 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1442 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1443 in the exponent causes BN_mod_exp_mont() to use the alternative
1444 implementation in BN_mod_exp_mont_consttime().) The old name
1445 remains as a deprecated alias.
1447 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1448 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1449 constant-time implementations for more than just exponentiation.
1450 Here too the old name is kept as a deprecated alias.
1452 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1453 the BN_BLINDING structure gets an independent copy of the
1454 modulus. This means that the previous "BIGNUM *m" argument to
1455 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1456 essentially becomes "const BIGNUM *m", although we can't actually
1457 change this in the header file before 0.9.9. It allows
1458 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1459 enable BN_FLG_CONSTTIME.
1461 [Matthew D Wood (Intel Corp)]
1463 *) In the SSL/TLS server implementation, be strict about session ID
1464 context matching (which matters if an application uses a single
1465 external cache for different purposes). Previously,
1466 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1467 set. This did ensure strict client verification, but meant that,
1468 with applications using a single external cache for quite
1469 different requirements, clients could circumvent ciphersuite
1470 restrictions for a given session ID context by starting a session
1471 in a different context.
1474 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1475 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1476 authentication-only ciphersuites.
1479 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1480 not complete and could lead to a possible single byte overflow
1481 (CVE-2007-5135) [Ben Laurie]
1483 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1485 *) Since AES128 and AES256 (and similarly Camellia128 and
1486 Camellia256) share a single mask bit in the logic of
1487 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1488 kludge to work properly if AES128 is available and AES256 isn't
1489 (or if Camellia128 is available and Camellia256 isn't).
1492 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1493 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1494 When a point or a seed is encoded in a BIT STRING, we need to
1495 prevent the removal of trailing zero bits to get the proper DER
1496 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1497 of a NamedBitList, for which trailing 0 bits need to be removed.)
1500 *) Have SSL/TLS server implementation tolerate "mismatched" record
1501 protocol version while receiving ClientHello even if the
1502 ClientHello is fragmented. (The server can't insist on the
1503 particular protocol version it has chosen before the ServerHello
1504 message has informed the client about his choice.)
1507 *) Add RFC 3779 support.
1508 [Rob Austein for ARIN, Ben Laurie]
1510 *) Load error codes if they are not already present instead of using a
1511 static variable. This allows them to be cleanly unloaded and reloaded.
1512 Improve header file function name parsing.
1515 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1516 or CAPABILITY handshake as required by RFCs.
1519 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1521 *) Introduce limits to prevent malicious keys being able to
1522 cause a denial of service. (CVE-2006-2940)
1523 [Steve Henson, Bodo Moeller]
1525 *) Fix ASN.1 parsing of certain invalid structures that can result
1526 in a denial of service. (CVE-2006-2937) [Steve Henson]
1528 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1529 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1531 *) Fix SSL client code which could crash if connecting to a
1532 malicious SSLv2 server. (CVE-2006-4343)
1533 [Tavis Ormandy and Will Drewry, Google Security Team]
1535 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1536 match only those. Before that, "AES256-SHA" would be interpreted
1537 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1538 the same strength classification in 0.9.7h) as we currently only
1539 have a single AES bit in the ciphersuite description bitmap.
1540 That change, however, also applied to ciphersuite strings such as
1541 "RC4-MD5" that intentionally matched multiple ciphersuites --
1542 namely, SSL 2.0 ciphersuites in addition to the more common ones
1543 from SSL 3.0/TLS 1.0.
1545 So we change the selection algorithm again: Naming an explicit
1546 ciphersuite selects this one ciphersuite, and any other similar
1547 ciphersuite (same bitmap) from *other* protocol versions.
1548 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1549 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1551 Since SSL 2.0 does not have any ciphersuites for which the
1552 128/256 bit distinction would be relevant, this works for now.
1553 The proper fix will be to use different bits for AES128 and
1554 AES256, which would have avoided the problems from the beginning;
1555 however, bits are scarce, so we can only do this in a new release
1556 (not just a patchlevel) when we can change the SSL_CIPHER
1557 definition to split the single 'unsigned long mask' bitmap into
1558 multiple values to extend the available space.
1562 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1564 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1565 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1567 *) Add AES IGE and biIGE modes.
1570 *) Change the Unix randomness entropy gathering to use poll() when
1571 possible instead of select(), since the latter has some
1572 undesirable limitations.
1573 [Darryl Miles via Richard Levitte and Bodo Moeller]
1575 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
1576 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
1577 cannot be implicitly activated as part of, e.g., the "AES" alias.
1578 However, please upgrade to OpenSSL 0.9.9[-dev] for
1579 non-experimental use of the ECC ciphersuites to get TLS extension
1580 support, which is required for curve and point format negotiation
1581 to avoid potential handshake problems.
1584 *) Disable rogue ciphersuites:
1586 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1587 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1588 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1590 The latter two were purportedly from
1591 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1594 Also deactivate the remaining ciphersuites from
1595 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1596 unofficial, and the ID has long expired.
1599 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1600 dual-core machines) and other potential thread-safety issues.
1603 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
1604 versions), which is now available for royalty-free use
1605 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
1606 Also, add Camellia TLS ciphersuites from RFC 4132.
1608 To minimize changes between patchlevels in the OpenSSL 0.9.8
1609 series, Camellia remains excluded from compilation unless OpenSSL
1610 is configured with 'enable-camellia'.
1613 *) Disable the padding bug check when compression is in use. The padding
1614 bug check assumes the first packet is of even length, this is not
1615 necessarily true if compresssion is enabled and can result in false
1616 positives causing handshake failure. The actual bug test is ancient
1617 code so it is hoped that implementations will either have fixed it by
1618 now or any which still have the bug do not support compression.
1621 Changes between 0.9.8a and 0.9.8b [04 May 2006]
1623 *) When applying a cipher rule check to see if string match is an explicit
1624 cipher suite and only match that one cipher suite if it is.
1627 *) Link in manifests for VC++ if needed.
1628 [Austin Ziegler <halostatue@gmail.com>]
1630 *) Update support for ECC-based TLS ciphersuites according to
1631 draft-ietf-tls-ecc-12.txt with proposed changes (but without
1632 TLS extensions, which are supported starting with the 0.9.9
1633 branch, not in the OpenSSL 0.9.8 branch).
1636 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
1637 opaque EVP_CIPHER_CTX handling.
1640 *) Fixes and enhancements to zlib compression code. We now only use
1641 "zlib1.dll" and use the default __cdecl calling convention on Win32
1642 to conform with the standards mentioned here:
1643 http://www.zlib.net/DLL_FAQ.txt
1644 Static zlib linking now works on Windows and the new --with-zlib-include
1645 --with-zlib-lib options to Configure can be used to supply the location
1646 of the headers and library. Gracefully handle case where zlib library
1650 *) Several fixes and enhancements to the OID generation code. The old code
1651 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
1652 handle numbers larger than ULONG_MAX, truncated printing and had a
1653 non standard OBJ_obj2txt() behaviour.
1656 *) Add support for building of engines under engine/ as shared libraries
1657 under VC++ build system.
1660 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
1661 Hopefully, we will not see any false combination of paths any more.
1664 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
1666 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1667 (part of SSL_OP_ALL). This option used to disable the
1668 countermeasure against man-in-the-middle protocol-version
1669 rollback in the SSL 2.0 server implementation, which is a bad
1670 idea. (CVE-2005-2969)
1672 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1673 for Information Security, National Institute of Advanced Industrial
1674 Science and Technology [AIST], Japan)]
1676 *) Add two function to clear and return the verify parameter flags.
1679 *) Keep cipherlists sorted in the source instead of sorting them at
1680 runtime, thus removing the need for a lock.
1683 *) Avoid some small subgroup attacks in Diffie-Hellman.
1684 [Nick Mathewson and Ben Laurie]
1686 *) Add functions for well-known primes.
1689 *) Extended Windows CE support.
1690 [Satoshi Nakamura and Andy Polyakov]
1692 *) Initialize SSL_METHOD structures at compile time instead of during
1693 runtime, thus removing the need for a lock.
1696 *) Make PKCS7_decrypt() work even if no certificate is supplied by
1697 attempting to decrypt each encrypted key in turn. Add support to
1701 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
1703 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
1706 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
1709 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
1710 key into the same file any more.
1713 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
1716 *) Add -utf8 command line and config file option to 'ca'.
1717 [Stefan <stf@udoma.org]
1719 *) Removed the macro des_crypt(), as it seems to conflict with some
1720 libraries. Use DES_crypt().
1723 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
1724 involves renaming the source and generated shared-libs for
1725 both. The engines will accept the corrected or legacy ids
1726 ('ncipher' and '4758_cca' respectively) when binding. NB,
1727 this only applies when building 'shared'.
1728 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
1730 *) Add attribute functions to EVP_PKEY structure. Modify
1731 PKCS12_create() to recognize a CSP name attribute and
1732 use it. Make -CSP option work again in pkcs12 utility.
1735 *) Add new functionality to the bn blinding code:
1736 - automatic re-creation of the BN_BLINDING parameters after
1737 a fixed number of uses (currently 32)
1738 - add new function for parameter creation
1739 - introduce flags to control the update behaviour of the
1740 BN_BLINDING parameters
1741 - hide BN_BLINDING structure
1742 Add a second BN_BLINDING slot to the RSA structure to improve
1743 performance when a single RSA object is shared among several
1747 *) Add support for DTLS.
1748 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
1750 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
1751 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
1754 *) Remove buggy and incompletet DH cert support from
1755 ssl/ssl_rsa.c and ssl/s3_both.c
1758 *) Use SHA-1 instead of MD5 as the default digest algorithm for
1759 the apps/openssl applications.
1762 *) Compile clean with "-Wall -Wmissing-prototypes
1763 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
1764 DEBUG_SAFESTACK must also be set.
1767 *) Change ./Configure so that certain algorithms can be disabled by default.
1768 The new counterpiece to "no-xxx" is "enable-xxx".
1770 The patented RC5 and MDC2 algorithms will now be disabled unless
1771 "enable-rc5" and "enable-mdc2", respectively, are specified.
1773 (IDEA remains enabled despite being patented. This is because IDEA
1774 is frequently required for interoperability, and there is no license
1775 fee for non-commercial use. As before, "no-idea" can be used to
1776 avoid this algorithm.)
1780 *) Add processing of proxy certificates (see RFC 3820). This work was
1781 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
1782 EGEE (Enabling Grids for E-science in Europe).
1785 *) RC4 performance overhaul on modern architectures/implementations, such
1786 as Intel P4, IA-64 and AMD64.
1789 *) New utility extract-section.pl. This can be used specify an alternative
1790 section number in a pod file instead of having to treat each file as
1791 a separate case in Makefile. This can be done by adding two lines to the
1794 =for comment openssl_section:XXX
1796 The blank line is mandatory.
1800 *) New arguments -certform, -keyform and -pass for s_client and s_server
1801 to allow alternative format key and certificate files and passphrase
1805 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
1806 update associated structures and add various utility functions.
1808 Add new policy related verify parameters, include policy checking in
1809 standard verify code. Enhance 'smime' application with extra parameters
1810 to support policy checking and print out.
1813 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
1814 Nehemiah processors. These extensions support AES encryption in hardware
1815 as well as RNG (though RNG support is currently disabled).
1816 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
1818 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
1821 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
1822 [Andy Polyakov and a number of other people]
1824 *) Improved PowerPC platform support. Most notably BIGNUM assembler
1825 implementation contributed by IBM.
1826 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
1828 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
1829 exponent rather than 'unsigned long'. There is a corresponding change to
1830 the new 'rsa_keygen' element of the RSA_METHOD structure.
1831 [Jelte Jansen, Geoff Thorpe]
1833 *) Functionality for creating the initial serial number file is now
1834 moved from CA.pl to the 'ca' utility with a new option -create_serial.
1836 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
1837 number file to 1, which is bound to cause problems. To avoid
1838 the problems while respecting compatibility between different 0.9.7
1839 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
1840 CA.pl for serial number initialization. With the new release 0.9.8,
1841 we can fix the problem directly in the 'ca' utility.)
1844 *) Reduced header interdepencies by declaring more opaque objects in
1845 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
1846 give fewer recursive includes, which could break lazy source code - so
1847 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
1848 developers should define this symbol when building and using openssl to
1849 ensure they track the recommended behaviour, interfaces, [etc], but
1850 backwards-compatible behaviour prevails when this isn't defined.
1853 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
1856 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
1857 This will generate a random key of the appropriate length based on the
1858 cipher context. The EVP_CIPHER can provide its own random key generation
1859 routine to support keys of a specific form. This is used in the des and
1860 3des routines to generate a key of the correct parity. Update S/MIME
1861 code to use new functions and hence generate correct parity DES keys.
1862 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
1863 valid (weak or incorrect parity).
1866 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
1867 as looking them up. This is useful when the verified structure may contain
1868 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
1869 present unless the new PKCS7_NO_CRL flag is asserted.
1872 *) Extend ASN1 oid configuration module. It now additionally accepts the
1875 shortName = some long name, 1.2.3.4
1878 *) Reimplemented the BN_CTX implementation. There is now no more static
1879 limitation on the number of variables it can handle nor the depth of the
1880 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
1881 information can now expand as required, and rather than having a single
1882 static array of bignums, BN_CTX now uses a linked-list of such arrays
1883 allowing it to expand on demand whilst maintaining the usefulness of
1884 BN_CTX's "bundling".
1887 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
1888 to allow all RSA operations to function using a single BN_CTX.
1891 *) Preliminary support for certificate policy evaluation and checking. This
1892 is initially intended to pass the tests outlined in "Conformance Testing
1893 of Relying Party Client Certificate Path Processing Logic" v1.07.
1896 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
1897 remained unused and not that useful. A variety of other little bignum
1898 tweaks and fixes have also been made continuing on from the audit (see
1902 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
1903 associated ASN1, EVP and SSL functions and old ASN1 macros.
1906 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
1907 and this should never fail. So the return value from the use of
1908 BN_set_word() (which can fail due to needless expansion) is now deprecated;
1909 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
1912 *) BN_CTX_get() should return zero-valued bignums, providing the same
1913 initialised value as BN_new().
1914 [Geoff Thorpe, suggested by Ulf Möller]
1916 *) Support for inhibitAnyPolicy certificate extension.
1919 *) An audit of the BIGNUM code is underway, for which debugging code is
1920 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
1921 is considered valid when processing BIGNUMs, and causes execution to
1922 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
1923 further steps are taken to deliberately pollute unused data in BIGNUM
1924 structures to try and expose faulty code further on. For now, openssl will
1925 (in its default mode of operation) continue to tolerate the inconsistent
1926 forms that it has tolerated in the past, but authors and packagers should
1927 consider trying openssl and their own applications when compiled with
1928 these debugging symbols defined. It will help highlight potential bugs in
1929 their own code, and will improve the test coverage for OpenSSL itself. At
1930 some point, these tighter rules will become openssl's default to improve
1931 maintainability, though the assert()s and other overheads will remain only
1932 in debugging configurations. See bn.h for more details.
1933 [Geoff Thorpe, Nils Larsch, Ulf Möller]
1935 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
1936 that can only be obtained through BN_CTX_new() (which implicitly
1937 initialises it). The presence of this function only made it possible
1938 to overwrite an existing structure (and cause memory leaks).
1941 *) Because of the callback-based approach for implementing LHASH as a
1942 template type, lh_insert() adds opaque objects to hash-tables and
1943 lh_doall() or lh_doall_arg() are typically used with a destructor callback
1944 to clean up those corresponding objects before destroying the hash table
1945 (and losing the object pointers). So some over-zealous constifications in
1946 LHASH have been relaxed so that lh_insert() does not take (nor store) the
1947 objects as "const" and the lh_doall[_arg] callback wrappers are not
1948 prototyped to have "const" restrictions on the object pointers they are
1949 given (and so aren't required to cast them away any more).
1952 *) The tmdiff.h API was so ugly and minimal that our own timing utility
1953 (speed) prefers to use its own implementation. The two implementations
1954 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
1955 its object type properly exposed (MS_TM) instead of casting to/from "char
1956 *". This may still change yet if someone realises MS_TM and "ms_time_***"
1957 aren't necessarily the greatest nomenclatures - but this is what was used
1958 internally to the implementation so I've used that for now.
1961 *) Ensure that deprecated functions do not get compiled when
1962 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
1963 the self-tests were still using deprecated key-generation functions so
1964 these have been updated also.
1967 *) Reorganise PKCS#7 code to separate the digest location functionality
1968 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
1969 New function PKCS7_set_digest() to set the digest type for PKCS#7
1970 digestedData type. Add additional code to correctly generate the
1971 digestedData type and add support for this type in PKCS7 initialization
1975 *) New function PKCS7_set0_type_other() this initializes a PKCS7
1976 structure of type "other".
1979 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
1980 sure the loop does correctly stop and breaking ("division by zero")
1981 modulus operations are not performed. The (pre-generated) prime
1982 table crypto/bn/bn_prime.h was already correct, but it could not be
1983 re-generated on some platforms because of the "division by zero"
1984 situation in the script.
1985 [Ralf S. Engelschall]
1987 *) Update support for ECC-based TLS ciphersuites according to
1988 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
1989 SHA-1 now is only used for "small" curves (where the
1990 representation of a field element takes up to 24 bytes); for
1991 larger curves, the field element resulting from ECDH is directly
1992 used as premaster secret.
1993 [Douglas Stebila (Sun Microsystems Laboratories)]
1995 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
1996 curve secp160r1 to the tests.
1997 [Douglas Stebila (Sun Microsystems Laboratories)]
1999 *) Add the possibility to load symbols globally with DSO.
2000 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2002 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2003 control of the error stack.
2006 *) Add support for STORE in ENGINE.
2009 *) Add the STORE type. The intention is to provide a common interface
2010 to certificate and key stores, be they simple file-based stores, or
2011 HSM-type store, or LDAP stores, or...
2012 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2015 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2016 pass a list of arguments to any function as well as provide a way
2017 for a function to pass data back to the caller.
2020 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2021 works like BUF_strdup() but can be used to duplicate a portion of
2022 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2026 *) Add the function sk_find_ex() which works like sk_find(), but will
2027 return an index to an element even if an exact match couldn't be
2028 found. The index is guaranteed to point at the element where the
2029 searched-for key would be inserted to preserve sorting order.
2032 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2033 takes an extra flags argument for optional functionality. Currently,
2034 the following flags are defined:
2036 OBJ_BSEARCH_VALUE_ON_NOMATCH
2037 This one gets OBJ_bsearch_ex() to return a pointer to the first
2038 element where the comparing function returns a negative or zero
2041 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2042 This one gets OBJ_bsearch_ex() to return a pointer to the first
2043 element where the comparing function returns zero. This is useful
2044 if there are more than one element where the comparing function
2048 *) Make it possible to create self-signed certificates with 'openssl ca'
2049 in such a way that the self-signed certificate becomes part of the
2050 CA database and uses the same mechanisms for serial number generation
2051 as all other certificate signing. The new flag '-selfsign' enables
2052 this functionality. Adapt CA.sh and CA.pl.in.
2055 *) Add functionality to check the public key of a certificate request
2056 against a given private. This is useful to check that a certificate
2057 request can be signed by that key (self-signing).
2060 *) Make it possible to have multiple active certificates with the same
2061 subject in the CA index file. This is done only if the keyword
2062 'unique_subject' is set to 'no' in the main CA section (default
2063 if 'CA_default') of the configuration file. The value is saved
2064 with the database itself in a separate index attribute file,
2065 named like the index file with '.attr' appended to the name.
2068 *) Generate muti valued AVAs using '+' notation in config files for
2072 *) Support for nameConstraints certificate extension.
2075 *) Support for policyConstraints certificate extension.
2078 *) Support for policyMappings certificate extension.
2081 *) Make sure the default DSA_METHOD implementation only uses its
2082 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2083 and change its own handlers to be NULL so as to remove unnecessary
2084 indirection. This lets alternative implementations fallback to the
2085 default implementation more easily.
2088 *) Support for directoryName in GeneralName related extensions
2092 *) Make it possible to link applications using Makefile.shared.
2093 Make that possible even when linking against static libraries!
2096 *) Support for single pass processing for S/MIME signing. This now
2097 means that S/MIME signing can be done from a pipe, in addition
2098 cleartext signing (multipart/signed type) is effectively streaming
2099 and the signed data does not need to be all held in memory.
2101 This is done with a new flag PKCS7_STREAM. When this flag is set
2102 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2103 is done after the data is output (and digests calculated) in
2104 SMIME_write_PKCS7().
2107 *) Add full support for -rpath/-R, both in shared libraries and
2108 applications, at least on the platforms where it's known how
2112 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2113 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2114 will now compute a table of multiples of the generator that
2115 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2116 faster (notably in the case of a single point multiplication,
2117 scalar * generator).
2118 [Nils Larsch, Bodo Moeller]
2120 *) IPv6 support for certificate extensions. The various extensions
2121 which use the IP:a.b.c.d can now take IPv6 addresses using the
2122 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2126 *) Added an ENGINE that implements RSA by performing private key
2127 exponentiations with the GMP library. The conversions to and from
2128 GMP's mpz_t format aren't optimised nor are any montgomery forms
2129 cached, and on x86 it appears OpenSSL's own performance has caught up.
2130 However there are likely to be other architectures where GMP could
2131 provide a boost. This ENGINE is not built in by default, but it can be
2132 specified at Configure time and should be accompanied by the necessary
2133 linker additions, eg;
2134 ./config -DOPENSSL_USE_GMP -lgmp
2137 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2138 testing availability of engines with "-t" - the old behaviour is
2139 produced by increasing the feature's verbosity with "-tt".
2142 *) ECDSA routines: under certain error conditions uninitialized BN objects
2143 could be freed. Solution: make sure initialization is performed early
2144 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2148 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2149 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2150 software implementations. For DSA and DH, parameter generation can
2151 also be overriden by providing the appropriate method callbacks.
2154 *) Change the "progress" mechanism used in key-generation and
2155 primality testing to functions that take a new BN_GENCB pointer in
2156 place of callback/argument pairs. The new API functions have "_ex"
2157 postfixes and the older functions are reimplemented as wrappers for
2158 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2159 declarations of the old functions to help (graceful) attempts to
2160 migrate to the new functions. Also, the new key-generation API
2161 functions operate on a caller-supplied key-structure and return
2162 success/failure rather than returning a key or NULL - this is to
2163 help make "keygen" another member function of RSA_METHOD etc.
2165 Example for using the new callback interface:
2167 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2171 BN_GENCB_set(&my_cb, my_callback, my_arg);
2173 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2174 /* For the meaning of a, b in calls to my_callback(), see the
2175 * documentation of the function that calls the callback.
2176 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2177 * my_callback should return 1 if it wants BN_is_prime_ex()
2178 * to continue, or 0 to stop.
2183 *) Change the ZLIB compression method to be stateful, and make it
2184 available to TLS with the number defined in
2185 draft-ietf-tls-compression-04.txt.
2188 *) Add the ASN.1 structures and functions for CertificatePair, which
2189 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2191 CertificatePair ::= SEQUENCE {
2192 forward [0] Certificate OPTIONAL,
2193 reverse [1] Certificate OPTIONAL,
2194 -- at least one of the pair shall be present -- }
2196 Also implement the PEM functions to read and write certificate
2197 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2199 This needed to be defined, mostly for the sake of the LDAP
2200 attribute crossCertificatePair, but may prove useful elsewhere as
2204 *) Make it possible to inhibit symlinking of shared libraries in
2205 Makefile.shared, for Cygwin's sake.
2208 *) Extend the BIGNUM API by creating a function
2209 void BN_set_negative(BIGNUM *a, int neg);
2210 and a macro that behave like
2211 int BN_is_negative(const BIGNUM *a);
2213 to avoid the need to access 'a->neg' directly in applications.
2216 *) Implement fast modular reduction for pseudo-Mersenne primes
2217 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2218 EC_GROUP_new_curve_GFp() will now automatically use this
2220 [Nils Larsch <nla@trustcenter.de>]
2222 *) Add new lock type (CRYPTO_LOCK_BN).
2225 *) Change the ENGINE framework to automatically load engines
2226 dynamically from specific directories unless they could be
2227 found to already be built in or loaded. Move all the
2228 current engines except for the cryptodev one to a new
2230 The engines in engines/ are built as shared libraries if
2231 the "shared" options was given to ./Configure or ./config.
2232 Otherwise, they are inserted in libcrypto.a.
2233 /usr/local/ssl/engines is the default directory for dynamic
2234 engines, but that can be overriden at configure time through
2235 the usual use of --prefix and/or --openssldir, and at run
2236 time with the environment variable OPENSSL_ENGINES.
2237 [Geoff Thorpe and Richard Levitte]
2239 *) Add Makefile.shared, a helper makefile to build shared
2240 libraries. Addapt Makefile.org.
2243 *) Add version info to Win32 DLLs.
2244 [Peter 'Luna' Runestig" <peter@runestig.com>]
2246 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2247 can be added using this API to created arbitrary PKCS#12
2248 files while avoiding the low level API.
2250 New options to PKCS12_create(), key or cert can be NULL and
2251 will then be omitted from the output file. The encryption
2252 algorithm NIDs can be set to -1 for no encryption, the mac
2253 iteration count can be set to 0 to omit the mac.
2255 Enhance pkcs12 utility by making the -nokeys and -nocerts
2256 options work when creating a PKCS#12 file. New option -nomac
2257 to omit the mac, NONE can be set for an encryption algorithm.
2258 New code is modified to use the enhanced PKCS12_create()
2259 instead of the low level API.
2262 *) Extend ASN1 encoder to support indefinite length constructed
2263 encoding. This can output sequences tags and octet strings in
2264 this form. Modify pk7_asn1.c to support indefinite length
2265 encoding. This is experimental and needs additional code to
2266 be useful, such as an ASN1 bio and some enhanced streaming
2269 Extend template encode functionality so that tagging is passed
2270 down to the template encoder.
2273 *) Let 'openssl req' fail if an argument to '-newkey' is not
2274 recognized instead of using RSA as a default.
2277 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2278 As these are not official, they are not included in "ALL";
2279 the "ECCdraft" ciphersuite group alias can be used to select them.
2280 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2282 *) Add ECDH engine support.
2283 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2285 *) Add ECDH in new directory crypto/ecdh/.
2286 [Douglas Stebila (Sun Microsystems Laboratories)]
2288 *) Let BN_rand_range() abort with an error after 100 iterations
2289 without success (which indicates a broken PRNG).
2292 *) Change BN_mod_sqrt() so that it verifies that the input value
2293 is really the square of the return value. (Previously,
2294 BN_mod_sqrt would show GIGO behaviour.)
2297 *) Add named elliptic curves over binary fields from X9.62, SECG,
2298 and WAP/WTLS; add OIDs that were still missing.
2300 [Sheueling Chang Shantz and Douglas Stebila
2301 (Sun Microsystems Laboratories)]
2303 *) Extend the EC library for elliptic curves over binary fields
2304 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2307 EC_GF2m_simple_method
2311 EC_GROUP_new_curve_GF2m
2312 EC_GROUP_set_curve_GF2m
2313 EC_GROUP_get_curve_GF2m
2314 EC_POINT_set_affine_coordinates_GF2m
2315 EC_POINT_get_affine_coordinates_GF2m
2316 EC_POINT_set_compressed_coordinates_GF2m
2318 Point compression for binary fields is disabled by default for
2319 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2322 As binary polynomials are represented as BIGNUMs, various members
2323 of the EC_GROUP and EC_POINT data structures can be shared
2324 between the implementations for prime fields and binary fields;
2325 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2326 are essentially identical to their ..._GFp counterparts.
2327 (For simplicity, the '..._GFp' prefix has been dropped from
2328 various internal method names.)
2330 An internal 'field_div' method (similar to 'field_mul' and
2331 'field_sqr') has been added; this is used only for binary fields.
2333 [Sheueling Chang Shantz and Douglas Stebila
2334 (Sun Microsystems Laboratories)]
2336 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2337 through methods ('mul', 'precompute_mult').
2339 The generic implementations (now internally called 'ec_wNAF_mul'
2340 and 'ec_wNAF_precomputed_mult') remain the default if these
2341 methods are undefined.
2343 [Sheueling Chang Shantz and Douglas Stebila
2344 (Sun Microsystems Laboratories)]
2346 *) New function EC_GROUP_get_degree, which is defined through
2347 EC_METHOD. For curves over prime fields, this returns the bit
2348 length of the modulus.
2350 [Sheueling Chang Shantz and Douglas Stebila
2351 (Sun Microsystems Laboratories)]
2353 *) New functions EC_GROUP_dup, EC_POINT_dup.
2354 (These simply call ..._new and ..._copy).
2356 [Sheueling Chang Shantz and Douglas Stebila
2357 (Sun Microsystems Laboratories)]
2359 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2360 Polynomials are represented as BIGNUMs (where the sign bit is not
2361 used) in the following functions [macros]:
2364 BN_GF2m_sub [= BN_GF2m_add]
2365 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2366 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2367 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2369 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2370 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2371 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2372 BN_GF2m_cmp [= BN_ucmp]
2374 (Note that only the 'mod' functions are actually for fields GF(2^m).
2375 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2377 For some functions, an the irreducible polynomial defining a
2378 field can be given as an 'unsigned int[]' with strictly
2379 decreasing elements giving the indices of those bits that are set;
2380 i.e., p[] represents the polynomial
2381 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2383 p[0] > p[1] > ... > p[k] = 0.
2384 This applies to the following functions:
2389 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2390 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2392 BN_GF2m_mod_sqrt_arr
2393 BN_GF2m_mod_solve_quad_arr
2397 Conversion can be performed by the following functions:
2402 bntest.c has additional tests for binary polynomial arithmetic.
2404 Two implementations for BN_GF2m_mod_div() are available.
2405 The default algorithm simply uses BN_GF2m_mod_inv() and
2406 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2407 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2408 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2410 [Sheueling Chang Shantz and Douglas Stebila
2411 (Sun Microsystems Laboratories)]
2413 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2414 functionality is disabled at compile-time.
2415 [Douglas Stebila <douglas.stebila@sun.com>]
2417 *) Change default behaviour of 'openssl asn1parse' so that more
2418 information is visible when viewing, e.g., a certificate:
2420 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2421 mode the content of non-printable OCTET STRINGs is output in a
2422 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2423 avoid the appearance of a printable string.
2424 [Nils Larsch <nla@trustcenter.de>]
2426 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2428 EC_GROUP_set_asn1_flag()
2429 EC_GROUP_get_asn1_flag()
2430 EC_GROUP_set_point_conversion_form()
2431 EC_GROUP_get_point_conversion_form()
2432 These control ASN1 encoding details:
2433 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2434 has been set to OPENSSL_EC_NAMED_CURVE.
2435 - Points are encoded in uncompressed form by default; options for
2436 asn1_for are as for point2oct, namely
2437 POINT_CONVERSION_COMPRESSED
2438 POINT_CONVERSION_UNCOMPRESSED
2439 POINT_CONVERSION_HYBRID
2441 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2444 EC_GROUP_get0_seed()
2445 EC_GROUP_get_seed_len()
2446 This is used only for ASN1 purposes (so far).
2447 [Nils Larsch <nla@trustcenter.de>]
2449 *) Add 'field_type' member to EC_METHOD, which holds the NID
2450 of the appropriate field type OID. The new function
2451 EC_METHOD_get_field_type() returns this value.
2452 [Nils Larsch <nla@trustcenter.de>]
2457 EC_POINT_point2hex()
2458 EC_POINT_hex2point()
2459 providing useful interfaces to EC_POINT_point2oct() and
2460 EC_POINT_oct2point().
2461 [Nils Larsch <nla@trustcenter.de>]
2463 *) Change internals of the EC library so that the functions
2464 EC_GROUP_set_generator()
2465 EC_GROUP_get_generator()
2466 EC_GROUP_get_order()
2467 EC_GROUP_get_cofactor()
2468 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2469 to methods, which would lead to unnecessary code duplication when
2470 adding different types of curves.
2471 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2473 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2474 arithmetic, and such that modified wNAFs are generated
2475 (which avoid length expansion in many cases).
2478 *) Add a function EC_GROUP_check_discriminant() (defined via
2479 EC_METHOD) that verifies that the curve discriminant is non-zero.
2481 Add a function EC_GROUP_check() that makes some sanity tests
2482 on a EC_GROUP, its generator and order. This includes
2483 EC_GROUP_check_discriminant().
2484 [Nils Larsch <nla@trustcenter.de>]
2486 *) Add ECDSA in new directory crypto/ecdsa/.
2488 Add applications 'openssl ecparam' and 'openssl ecdsa'
2489 (these are based on 'openssl dsaparam' and 'openssl dsa').
2491 ECDSA support is also included in various other files across the
2492 library. Most notably,
2493 - 'openssl req' now has a '-newkey ecdsa:file' option;
2494 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2495 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2496 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2497 them suitable for ECDSA where domain parameters must be
2498 extracted before the specific public key;
2499 - ECDSA engine support has been added.
2500 [Nils Larsch <nla@trustcenter.de>]
2502 *) Include some named elliptic curves, and add OIDs from X9.62,
2503 SECG, and WAP/WTLS. Each curve can be obtained from the new
2505 EC_GROUP_new_by_curve_name(),
2506 and the list of available named curves can be obtained with
2507 EC_get_builtin_curves().
2508 Also add a 'curve_name' member to EC_GROUP objects, which can be
2510 EC_GROUP_set_curve_name()
2511 EC_GROUP_get_curve_name()
2512 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2514 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2515 was actually never needed) and in BN_mul(). The removal in BN_mul()
2516 required a small change in bn_mul_part_recursive() and the addition
2517 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2518 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2519 bn_sub_words() and bn_add_words() except they take arrays with
2523 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2525 *) Cleanse PEM buffers before freeing them since they may contain
2527 [Benjamin Bennett <ben@psc.edu>]
2529 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2530 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2531 authentication-only ciphersuites.
2534 *) Since AES128 and AES256 share a single mask bit in the logic of
2535 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2536 kludge to work properly if AES128 is available and AES256 isn't.
2539 *) Expand security boundary to match 1.1.1 module.
2542 *) Remove redundant features: hash file source, editing of test vectors
2543 modify fipsld to use external fips_premain.c signature.
2546 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2547 run algorithm test programs.
2550 *) Make algorithm test programs more tolerant of whitespace.
2553 *) Have SSL/TLS server implementation tolerate "mismatched" record
2554 protocol version while receiving ClientHello even if the
2555 ClientHello is fragmented. (The server can't insist on the
2556 particular protocol version it has chosen before the ServerHello
2557 message has informed the client about his choice.)
2560 *) Load error codes if they are not already present instead of using a
2561 static variable. This allows them to be cleanly unloaded and reloaded.
2564 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2566 *) Introduce limits to prevent malicious keys being able to
2567 cause a denial of service. (CVE-2006-2940)
2568 [Steve Henson, Bodo Moeller]
2570 *) Fix ASN.1 parsing of certain invalid structures that can result
2571 in a denial of service. (CVE-2006-2937) [Steve Henson]
2573 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2574 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2576 *) Fix SSL client code which could crash if connecting to a
2577 malicious SSLv2 server. (CVE-2006-4343)
2578 [Tavis Ormandy and Will Drewry, Google Security Team]
2580 *) Change ciphersuite string processing so that an explicit
2581 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
2582 will no longer include "AES128-SHA"), and any other similar
2583 ciphersuite (same bitmap) from *other* protocol versions (so that
2584 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
2585 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
2586 changes from 0.9.8b and 0.9.8d.
2589 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
2591 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2592 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2594 *) Change the Unix randomness entropy gathering to use poll() when
2595 possible instead of select(), since the latter has some
2596 undesirable limitations.
2597 [Darryl Miles via Richard Levitte and Bodo Moeller]
2599 *) Disable rogue ciphersuites:
2601 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2602 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2603 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2605 The latter two were purportedly from
2606 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2609 Also deactive the remaining ciphersuites from
2610 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2611 unofficial, and the ID has long expired.
2614 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2615 dual-core machines) and other potential thread-safety issues.
2618 Changes between 0.9.7i and 0.9.7j [04 May 2006]
2620 *) Adapt fipsld and the build system to link against the validated FIPS
2621 module in FIPS mode.
2624 *) Fixes for VC++ 2005 build under Windows.
2627 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
2628 from a Windows bash shell such as MSYS. It is autodetected from the
2629 "config" script when run from a VC++ environment. Modify standard VC++
2630 build to use fipscanister.o from the GNU make build.
2633 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
2635 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
2636 The value now differs depending on if you build for FIPS or not.
2637 BEWARE! A program linked with a shared FIPSed libcrypto can't be
2638 safely run with a non-FIPSed libcrypto, as it may crash because of
2639 the difference induced by this change.
2642 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
2644 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2645 (part of SSL_OP_ALL). This option used to disable the
2646 countermeasure against man-in-the-middle protocol-version
2647 rollback in the SSL 2.0 server implementation, which is a bad
2648 idea. (CVE-2005-2969)
2650 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2651 for Information Security, National Institute of Advanced Industrial
2652 Science and Technology [AIST], Japan)]
2654 *) Minimal support for X9.31 signatures and PSS padding modes. This is
2655 mainly for FIPS compliance and not fully integrated at this stage.
2658 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
2659 the exponentiation using a fixed-length exponent. (Otherwise,
2660 the information leaked through timing could expose the secret key
2661 after many signatures; cf. Bleichenbacher's attack on DSA with
2665 *) Make a new fixed-window mod_exp implementation the default for
2666 RSA, DSA, and DH private-key operations so that the sequence of
2667 squares and multiplies and the memory access pattern are
2668 independent of the particular secret key. This will mitigate
2669 cache-timing and potential related attacks.
2671 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
2672 and this is automatically used by BN_mod_exp_mont() if the new flag
2673 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
2674 will use this BN flag for private exponents unless the flag
2675 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
2676 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
2678 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
2680 *) Change the client implementation for SSLv23_method() and
2681 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
2682 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
2683 (Previously, the SSL 2.0 backwards compatible Client Hello
2684 message format would be used even with SSL_OP_NO_SSLv2.)
2687 *) Add support for smime-type MIME parameter in S/MIME messages which some
2691 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
2692 a threadsafe manner. Modify rsa code to use new function and add calls
2693 to dsa and dh code (which had race conditions before).
2696 *) Include the fixed error library code in the C error file definitions
2697 instead of fixing them up at runtime. This keeps the error code
2698 structures constant.
2701 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
2703 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
2706 *) Fixes for newer kerberos headers. NB: the casts are needed because
2707 the 'length' field is signed on one version and unsigned on another
2708 with no (?) obvious way to tell the difference, without these VC++
2709 complains. Also the "definition" of FAR (blank) is no longer included
2710 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
2711 some needed definitions.
2714 *) Undo Cygwin change.
2717 *) Added support for proxy certificates according to RFC 3820.
2718 Because they may be a security thread to unaware applications,
2719 they must be explicitely allowed in run-time. See
2720 docs/HOWTO/proxy_certificates.txt for further information.
2723 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
2725 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
2726 server and client random values. Previously
2727 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
2728 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
2730 This change has negligible security impact because:
2732 1. Server and client random values still have 24 bytes of pseudo random
2735 2. Server and client random values are sent in the clear in the initial
2738 3. The master secret is derived using the premaster secret (48 bytes in
2739 size for static RSA ciphersuites) as well as client server and random
2742 The OpenSSL team would like to thank the UK NISCC for bringing this issue
2745 [Stephen Henson, reported by UK NISCC]
2747 *) Use Windows randomness collection on Cygwin.
2750 *) Fix hang in EGD/PRNGD query when communication socket is closed
2751 prematurely by EGD/PRNGD.
2752 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
2754 *) Prompt for pass phrases when appropriate for PKCS12 input format.
2757 *) Back-port of selected performance improvements from development
2758 branch, as well as improved support for PowerPC platforms.
2761 *) Add lots of checks for memory allocation failure, error codes to indicate
2762 failure and freeing up memory if a failure occurs.
2763 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
2765 *) Add new -passin argument to dgst.
2768 *) Perform some character comparisons of different types in X509_NAME_cmp:
2769 this is needed for some certificates that reencode DNs into UTF8Strings
2770 (in violation of RFC3280) and can't or wont issue name rollover
2774 *) Make an explicit check during certificate validation to see that
2775 the CA setting in each certificate on the chain is correct. As a
2776 side effect always do the following basic checks on extensions,
2777 not just when there's an associated purpose to the check:
2779 - if there is an unhandled critical extension (unless the user
2780 has chosen to ignore this fault)
2781 - if the path length has been exceeded (if one is set at all)
2782 - that certain extensions fit the associated purpose (if one has
2786 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
2788 *) Avoid a race condition when CRLs are checked in a multi threaded
2789 environment. This would happen due to the reordering of the revoked
2790 entries during signature checking and serial number lookup. Now the
2791 encoding is cached and the serial number sort performed under a lock.
2792 Add new STACK function sk_is_sorted().
2795 *) Add Delta CRL to the extension code.
2798 *) Various fixes to s3_pkt.c so alerts are sent properly.
2799 [David Holmes <d.holmes@f5.com>]
2801 *) Reduce the chances of duplicate issuer name and serial numbers (in
2802 violation of RFC3280) using the OpenSSL certificate creation utilities.
2803 This is done by creating a random 64 bit value for the initial serial
2804 number when a serial number file is created or when a self signed
2805 certificate is created using 'openssl req -x509'. The initial serial
2806 number file is created using 'openssl x509 -next_serial' in CA.pl
2807 rather than being initialized to 1.
2810 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
2812 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
2813 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
2814 [Joe Orton, Steve Henson]
2816 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
2818 [Joe Orton, Steve Henson]
2820 *) Make it possible to have multiple active certificates with the same
2821 subject in the CA index file. This is done only if the keyword
2822 'unique_subject' is set to 'no' in the main CA section (default
2823 if 'CA_default') of the configuration file. The value is saved
2824 with the database itself in a separate index attribute file,
2825 named like the index file with '.attr' appended to the name.
2828 *) X509 verify fixes. Disable broken certificate workarounds when
2829 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
2830 keyUsage extension present. Don't accept CRLs with unhandled critical
2831 extensions: since verify currently doesn't process CRL extensions this
2832 rejects a CRL with *any* critical extensions. Add new verify error codes
2836 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
2837 A clarification of RFC2560 will require the use of OCTET STRINGs and
2838 some implementations cannot handle the current raw format. Since OpenSSL
2839 copies and compares OCSP nonces as opaque blobs without any attempt at
2840 parsing them this should not create any compatibility issues.
2843 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
2844 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
2845 this HMAC (and other) operations are several times slower than OpenSSL
2849 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
2850 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
2852 *) Use the correct content when signing type "other".
2855 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
2857 *) Fix various bugs revealed by running the NISCC test suite:
2859 Stop out of bounds reads in the ASN1 code when presented with
2860 invalid tags (CVE-2003-0543 and CVE-2003-0544).
2862 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
2864 If verify callback ignores invalid public key errors don't try to check
2865 certificate signature with the NULL public key.
2869 *) New -ignore_err option in ocsp application to stop the server
2870 exiting on the first error in a request.
2873 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
2874 if the server requested one: as stated in TLS 1.0 and SSL 3.0
2878 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
2879 extra data after the compression methods not only for TLS 1.0
2880 but also for SSL 3.0 (as required by the specification).
2881 [Bodo Moeller; problem pointed out by Matthias Loepfe]
2883 *) Change X509_certificate_type() to mark the key as exported/exportable
2884 when it's 512 *bits* long, not 512 bytes.
2887 *) Change AES_cbc_encrypt() so it outputs exact multiple of
2888 blocks during encryption.
2891 *) Various fixes to base64 BIO and non blocking I/O. On write
2892 flushes were not handled properly if the BIO retried. On read
2893 data was not being buffered properly and had various logic bugs.
2894 This also affects blocking I/O when the data being decoded is a
2898 *) Various S/MIME bugfixes and compatibility changes:
2899 output correct application/pkcs7 MIME type if
2900 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
2901 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
2902 of files as .eml work). Correctly handle very long lines in MIME
2906 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
2908 *) Countermeasure against the Klima-Pokorny-Rosa extension of
2909 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
2910 a protocol version number mismatch like a decryption error
2911 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
2914 *) Turn on RSA blinding by default in the default implementation
2915 to avoid a timing attack. Applications that don't want it can call
2916 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
2917 They would be ill-advised to do so in most cases.
2918 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
2920 *) Change RSA blinding code so that it works when the PRNG is not
2921 seeded (in this case, the secret RSA exponent is abused as
2922 an unpredictable seed -- if it is not unpredictable, there
2923 is no point in blinding anyway). Make RSA blinding thread-safe
2924 by remembering the creator's thread ID in rsa->blinding and
2925 having all other threads use local one-time blinding factors
2926 (this requires more computation than sharing rsa->blinding, but
2927 avoids excessive locking; and if an RSA object is not shared
2928 between threads, blinding will still be very fast).
2931 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
2932 ENGINE as defaults for all supported algorithms irrespective of
2933 the 'flags' parameter. 'flags' is now honoured, so applications
2934 should make sure they are passing it correctly.
2937 *) Target "mingw" now allows native Windows code to be generated in
2938 the Cygwin environment as well as with the MinGW compiler.
2941 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
2943 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
2944 via timing by performing a MAC computation even if incorrrect
2945 block cipher padding has been found. This is a countermeasure
2946 against active attacks where the attacker has to distinguish
2947 between bad padding and a MAC verification error. (CVE-2003-0078)
2949 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
2950 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
2951 Martin Vuagnoux (EPFL, Ilion)]
2953 *) Make the no-err option work as intended. The intention with no-err
2954 is not to have the whole error stack handling routines removed from
2955 libcrypto, it's only intended to remove all the function name and
2956 reason texts, thereby removing some of the footprint that may not
2957 be interesting if those errors aren't displayed anyway.
2959 NOTE: it's still possible for any application or module to have it's
2960 own set of error texts inserted. The routines are there, just not
2961 used by default when no-err is given.
2964 *) Add support for FreeBSD on IA64.
2965 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
2967 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
2968 Kerberos function mit_des_cbc_cksum(). Before this change,
2969 the value returned by DES_cbc_cksum() was like the one from
2970 mit_des_cbc_cksum(), except the bytes were swapped.
2971 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
2973 *) Allow an application to disable the automatic SSL chain building.
2974 Before this a rather primitive chain build was always performed in
2975 ssl3_output_cert_chain(): an application had no way to send the
2976 correct chain if the automatic operation produced an incorrect result.
2978 Now the chain builder is disabled if either:
2980 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
2982 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
2984 The reasoning behind this is that an application would not want the
2985 auto chain building to take place if extra chain certificates are
2986 present and it might also want a means of sending no additional
2987 certificates (for example the chain has two certificates and the
2991 *) Add the possibility to build without the ENGINE framework.
2992 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
2994 *) Under Win32 gmtime() can return NULL: check return value in
2995 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
2998 *) DSA routines: under certain error conditions uninitialized BN objects
2999 could be freed. Solution: make sure initialization is performed early
3000 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3001 Nils Larsch <nla@trustcenter.de> via PR#459)
3004 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3005 checked on reconnect on the client side, therefore session resumption
3006 could still fail with a "ssl session id is different" error. This
3007 behaviour is masked when SSL_OP_ALL is used due to
3008 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3009 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3010 followup to PR #377.
3013 *) IA-32 assembler support enhancements: unified ELF targets, support
3014 for SCO/Caldera platforms, fix for Cygwin shared build.
3017 *) Add support for FreeBSD on sparc64. As a consequence, support for
3018 FreeBSD on non-x86 processors is separate from x86 processors on
3019 the config script, much like the NetBSD support.
3020 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3022 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3024 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3027 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3028 code (06) was taken as the first octet of the session ID and the last
3029 octet was ignored consequently. As a result SSLv2 client side session
3030 caching could not have worked due to the session ID mismatch between
3032 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3036 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3037 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3041 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3042 seems that in spite of existing for more than a year, many application
3043 author have done nothing to provide the necessary callbacks, which
3044 means that this particular engine will not work properly anywhere.
3045 This is a very unfortunate situation which forces us, in the name
3046 of usability, to give the hw_ncipher.c a static lock, which is part
3048 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3049 appear in 0.9.8 or later. We EXPECT application authors to have
3050 dealt properly with this when 0.9.8 is released (unless we actually
3051 make such changes in the libcrypto locking code that changes will
3052 have to be made anyway).
3055 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3056 octets have been read, EOF or an error occurs. Without this change
3057 some truncated ASN1 structures will not produce an error.
3060 *) Disable Heimdal support, since it hasn't been fully implemented.
3061 Still give the possibility to force the use of Heimdal, but with
3062 warnings and a request that patches get sent to openssl-dev.
3065 *) Add the VC-CE target, introduce the WINCE sysname, and add
3066 INSTALL.WCE and appropriate conditionals to make it build.
3067 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3069 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3070 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3071 edit numbers of the version.
3072 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3074 *) Introduce safe string copy and catenation functions
3075 (BUF_strlcpy() and BUF_strlcat()).
3076 [Ben Laurie (CHATS) and Richard Levitte]
3078 *) Avoid using fixed-size buffers for one-line DNs.
3079 [Ben Laurie (CHATS)]
3081 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3082 resizing buffers containing secrets, and use where appropriate.
3083 [Ben Laurie (CHATS)]
3085 *) Avoid using fixed size buffers for configuration file location.
3086 [Ben Laurie (CHATS)]
3088 *) Avoid filename truncation for various CA files.
3089 [Ben Laurie (CHATS)]
3091 *) Use sizeof in preference to magic numbers.
3092 [Ben Laurie (CHATS)]
3094 *) Avoid filename truncation in cert requests.
3095 [Ben Laurie (CHATS)]
3097 *) Add assertions to check for (supposedly impossible) buffer
3099 [Ben Laurie (CHATS)]
3101 *) Don't cache truncated DNS entries in the local cache (this could
3102 potentially lead to a spoofing attack).
3103 [Ben Laurie (CHATS)]
3105 *) Fix various buffers to be large enough for hex/decimal
3106 representations in a platform independent manner.
3107 [Ben Laurie (CHATS)]
3109 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3110 resizing buffers containing secrets, and use where appropriate.
3111 [Ben Laurie (CHATS)]
3113 *) Add BIO_indent() to avoid much slightly worrying code to do
3115 [Ben Laurie (CHATS)]
3117 *) Convert sprintf()/BIO_puts() to BIO_printf().
3118 [Ben Laurie (CHATS)]
3120 *) buffer_gets() could terminate with the buffer only half
3122 [Ben Laurie (CHATS)]
3124 *) Add assertions to prevent user-supplied crypto functions from
3125 overflowing internal buffers by having large block sizes, etc.
3126 [Ben Laurie (CHATS)]
3128 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3130 [Ben Laurie (CHATS)]
3132 *) Eliminate unused copy of key in RC4.
3133 [Ben Laurie (CHATS)]
3135 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3136 [Ben Laurie (CHATS)]
3138 *) Fix off-by-one error in EGD path.
3139 [Ben Laurie (CHATS)]
3141 *) If RANDFILE path is too long, ignore instead of truncating.
3142 [Ben Laurie (CHATS)]
3144 *) Eliminate unused and incorrectly sized X.509 structure
3146 [Ben Laurie (CHATS)]
3148 *) Eliminate unused and dangerous function knumber().
3149 [Ben Laurie (CHATS)]
3151 *) Eliminate unused and dangerous structure, KSSL_ERR.
3152 [Ben Laurie (CHATS)]
3154 *) Protect against overlong session ID context length in an encoded
3155 session object. Since these are local, this does not appear to be
3157 [Ben Laurie (CHATS)]
3159 *) Change from security patch (see 0.9.6e below) that did not affect
3160 the 0.9.6 release series:
3162 Remote buffer overflow in SSL3 protocol - an attacker could
3163 supply an oversized master key in Kerberos-enabled versions.
3165 [Ben Laurie (CHATS)]
3167 *) Change the SSL kerb5 codes to match RFC 2712.
3170 *) Make -nameopt work fully for req and add -reqopt switch.
3171 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3173 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3174 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3176 *) Make sure tests can be performed even if the corresponding algorithms
3177 have been removed entirely. This was also the last step to make
3178 OpenSSL compilable with DJGPP under all reasonable conditions.
3179 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3181 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3182 to allow version independent disabling of normally unselected ciphers,
3183 which may be activated as a side-effect of selecting a single cipher.
3185 (E.g., cipher list string "RSA" enables ciphersuites that are left
3186 out of "ALL" because they do not provide symmetric encryption.
3187 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3188 [Lutz Jaenicke, Bodo Moeller]
3190 *) Add appropriate support for separate platform-dependent build
3191 directories. The recommended way to make a platform-dependent
3192 build directory is the following (tested on Linux), maybe with
3195 # Place yourself outside of the OpenSSL source tree. In
3196 # this example, the environment variable OPENSSL_SOURCE
3197 # is assumed to contain the absolute OpenSSL source directory.
3198 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3199 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3200 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3201 mkdir -p `dirname $F`
3202 ln -s $OPENSSL_SOURCE/$F $F
3205 To be absolutely sure not to disturb the source tree, a "make clean"
3206 is a good thing. If it isn't successfull, don't worry about it,
3207 it probably means the source directory is very clean.
3210 *) Make sure any ENGINE control commands make local copies of string
3211 pointers passed to them whenever necessary. Otherwise it is possible
3212 the caller may have overwritten (or deallocated) the original string
3213 data when a later ENGINE operation tries to use the stored values.
3214 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3216 *) Improve diagnostics in file reading and command-line digests.
3217 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3219 *) Add AES modes CFB and OFB to the object database. Correct an
3220 error in AES-CFB decryption.
3223 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3224 allows existing EVP_CIPHER_CTX structures to be reused after
3225 calling EVP_*Final(). This behaviour is used by encryption
3226 BIOs and some applications. This has the side effect that
3227 applications must explicitly clean up cipher contexts with
3228 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3231 *) Check the values of dna and dnb in bn_mul_recursive before calling
3232 bn_mul_comba (a non zero value means the a or b arrays do not contain
3233 n2 elements) and fallback to bn_mul_normal if either is not zero.
3236 *) Fix escaping of non-ASCII characters when using the -subj option
3237 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3240 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3241 form for "surname", serialNumber has no short form.
3242 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3243 therefore remove "mail" short name for "internet 7".
3244 The OID for unique identifiers in X509 certificates is
3245 x500UniqueIdentifier, not uniqueIdentifier.
3246 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3249 *) Add an "init" command to the ENGINE config module and auto initialize
3250 ENGINEs. Without any "init" command the ENGINE will be initialized
3251 after all ctrl commands have been executed on it. If init=1 the
3252 ENGINE is initailized at that point (ctrls before that point are run
3253 on the uninitialized ENGINE and after on the initialized one). If
3254 init=0 then the ENGINE will not be iniatialized at all.
3257 *) Fix the 'app_verify_callback' interface so that the user-defined
3258 argument is actually passed to the callback: In the
3259 SSL_CTX_set_cert_verify_callback() prototype, the callback
3260 declaration has been changed from
3263 int (*cb)(X509_STORE_CTX *,void *);
3264 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3265 i=s->ctx->app_verify_callback(&ctx)
3266 has been changed into
3267 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3269 To update applications using SSL_CTX_set_cert_verify_callback(),
3270 a dummy argument can be added to their callback functions.
3271 [D. K. Smetters <smetters@parc.xerox.com>]
3273 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3274 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3276 *) Add and OPENSSL_LOAD_CONF define which will cause
3277 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3278 This allows older applications to transparently support certain
3279 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3280 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3281 load the config file and OPENSSL_add_all_algorithms_conf() which will
3282 always load it have also been added.
3285 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
3286 Adjust NIDs and EVP layer.
3287 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3289 *) Config modules support in openssl utility.
3291 Most commands now load modules from the config file,
3292 though in a few (such as version) this isn't done
3293 because it couldn't be used for anything.
3295 In the case of ca and req the config file used is
3296 the same as the utility itself: that is the -config
3297 command line option can be used to specify an
3301 *) Move default behaviour from OPENSSL_config(). If appname is NULL
3302 use "openssl_conf" if filename is NULL use default openssl config file.
3305 *) Add an argument to OPENSSL_config() to allow the use of an alternative
3306 config section name. Add a new flag to tolerate a missing config file
3307 and move code to CONF_modules_load_file().
3310 *) Support for crypto accelerator cards from Accelerated Encryption
3311 Processing, www.aep.ie. (Use engine 'aep')
3312 The support was copied from 0.9.6c [engine] and adapted/corrected
3313 to work with the new engine framework.
3314 [AEP Inc. and Richard Levitte]
3316 *) Support for SureWare crypto accelerator cards from Baltimore
3317 Technologies. (Use engine 'sureware')
3318 The support was copied from 0.9.6c [engine] and adapted
3319 to work with the new engine framework.
3322 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
3323 make the newer ENGINE framework commands for the CHIL engine work.
3324 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
3326 *) Make it possible to produce shared libraries on ReliantUNIX.
3327 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
3329 *) Add the configuration target debug-linux-ppro.
3330 Make 'openssl rsa' use the general key loading routines
3331 implemented in apps.c, and make those routines able to
3332 handle the key format FORMAT_NETSCAPE and the variant
3334 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3336 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3337 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3339 *) Add -keyform to rsautl, and document -engine.
3340 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3342 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3343 BIO_R_NO_SUCH_FILE error code rather than the generic
3344 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3347 *) Add new functions
3349 ERR_peek_last_error_line
3350 ERR_peek_last_error_line_data.
3351 These are similar to
3354 ERR_peek_error_line_data,
3355 but report on the latest error recorded rather than the first one
3356 still in the error queue.
3357 [Ben Laurie, Bodo Moeller]
3359 *) default_algorithms option in ENGINE config module. This allows things
3361 default_algorithms = ALL
3362 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3365 *) Prelminary ENGINE config module.
3368 *) New experimental application configuration code.
3371 *) Change the AES code to follow the same name structure as all other
3372 symmetric ciphers, and behave the same way. Move everything to
3373 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3374 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3376 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3377 [Ben Laurie and Theo de Raadt]
3379 *) Add option to output public keys in req command.
3380 [Massimiliano Pala madwolf@openca.org]
3382 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3383 (up to about 10% better than before for P-192 and P-224).
3386 *) New functions/macros
3388 SSL_CTX_set_msg_callback(ctx, cb)
3389 SSL_CTX_set_msg_callback_arg(ctx, arg)
3390 SSL_set_msg_callback(ssl, cb)
3391 SSL_set_msg_callback_arg(ssl, arg)
3393 to request calling a callback function
3395 void cb(int write_p, int version, int content_type,
3396 const void *buf, size_t len, SSL *ssl, void *arg)
3398 whenever a protocol message has been completely received
3399 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3400 protocol version according to which the SSL library interprets
3401 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3402 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3403 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3404 specification (change_cipher_spec(20), alert(21), handshake(22)).
3405 'buf' and 'len' point to the actual message, 'ssl' to the
3406 SSL object, and 'arg' is the application-defined value set by
3407 SSL[_CTX]_set_msg_callback_arg().
3409 'openssl s_client' and 'openssl s_server' have new '-msg' options
3410 to enable a callback that displays all protocol messages.
3413 *) Change the shared library support so shared libraries are built as
3414 soon as the corresponding static library is finished, and thereby get
3415 openssl and the test programs linked against the shared library.
3416 This still only happens when the keyword "shard" has been given to
3417 the configuration scripts.
3419 NOTE: shared library support is still an experimental thing, and
3420 backward binary compatibility is still not guaranteed.
3421 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3423 *) Add support for Subject Information Access extension.
3424 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3426 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3427 additional bytes when new memory had to be allocated, not just
3428 when reusing an existing buffer.
3431 *) New command line and configuration option 'utf8' for the req command.
3432 This allows field values to be specified as UTF8 strings.
3435 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3436 runs for the former and machine-readable output for the latter.
3439 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3440 of the e-mail address in the DN (i.e., it will go into a certificate
3441 extension only). The new configuration file option 'email_in_dn = no'
3442 has the same effect.
3443 [Massimiliano Pala madwolf@openca.org]
3445 *) Change all functions with names starting with des_ to be starting
3446 with DES_ instead. Add wrappers that are compatible with libdes,
3447 but are named _ossl_old_des_*. Finally, add macros that map the
3448 des_* symbols to the corresponding _ossl_old_des_* if libdes
3449 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3450 desired, the des_* symbols will be mapped to DES_*, with one
3453 Since we provide two compatibility mappings, the user needs to
3454 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3455 compatibility is desired. The default (i.e., when that macro
3456 isn't defined) is OpenSSL 0.9.6c compatibility.
3458 There are also macros that enable and disable the support of old
3459 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3460 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3461 are defined, the default will apply: to support the old des routines.
3463 In either case, one must include openssl/des.h to get the correct
3464 definitions. Do not try to just include openssl/des_old.h, that
3467 NOTE: This is a major break of an old API into a new one. Software
3468 authors are encouraged to switch to the DES_ style functions. Some
3469 time in the future, des_old.h and the libdes compatibility functions
3470 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
3471 default), and then completely removed.
3474 *) Test for certificates which contain unsupported critical extensions.
3475 If such a certificate is found during a verify operation it is
3476 rejected by default: this behaviour can be overridden by either
3477 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
3478 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
3479 X509_supported_extension() has also been added which returns 1 if a
3480 particular extension is supported.
3483 *) Modify the behaviour of EVP cipher functions in similar way to digests
3484 to retain compatibility with existing code.
3487 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
3488 compatibility with existing code. In particular the 'ctx' parameter does
3489 not have to be to be initialized before the call to EVP_DigestInit() and
3490 it is tidied up after a call to EVP_DigestFinal(). New function
3491 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
3492 EVP_MD_CTX_copy() changed to not require the destination to be
3493 initialized valid and new function EVP_MD_CTX_copy_ex() added which
3494 requires the destination to be valid.
3496 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
3497 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
3500 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
3501 so that complete 'Handshake' protocol structures are kept in memory
3502 instead of overwriting 'msg_type' and 'length' with 'body' data.
3505 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
3506 [Massimo Santin via Richard Levitte]
3508 *) Major restructuring to the underlying ENGINE code. This includes
3509 reduction of linker bloat, separation of pure "ENGINE" manipulation
3510 (initialisation, etc) from functionality dealing with implementations
3511 of specific crypto iterfaces. This change also introduces integrated
3512 support for symmetric ciphers and digest implementations - so ENGINEs
3513 can now accelerate these by providing EVP_CIPHER and EVP_MD
3514 implementations of their own. This is detailed in crypto/engine/README
3515 as it couldn't be adequately described here. However, there are a few
3516 API changes worth noting - some RSA, DSA, DH, and RAND functions that
3517 were changed in the original introduction of ENGINE code have now
3518 reverted back - the hooking from this code to ENGINE is now a good
3519 deal more passive and at run-time, operations deal directly with
3520 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
3521 dereferencing through an ENGINE pointer any more. Also, the ENGINE
3522 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
3523 they were not being used by the framework as there is no concept of a
3524 BIGNUM_METHOD and they could not be generalised to the new
3525 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
3526 ENGINE_cpy() has been removed as it cannot be consistently defined in
3530 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
3533 *) Change mkdef.pl to sort symbols that get the same entry number,
3534 and make sure the automatically generated functions ERR_load_*
3535 become part of libeay.num as well.
3538 *) New function SSL_renegotiate_pending(). This returns true once
3539 renegotiation has been requested (either SSL_renegotiate() call
3540 or HelloRequest/ClientHello receveived from the peer) and becomes
3541 false once a handshake has been completed.
3542 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
3543 sends a HelloRequest, but does not ensure that a handshake takes
3544 place. SSL_renegotiate_pending() is useful for checking if the
3545 client has followed the request.)
3548 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
3549 By default, clients may request session resumption even during
3550 renegotiation (if session ID contexts permit); with this option,
3551 session resumption is possible only in the first handshake.
3553 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
3554 more bits available for options that should not be part of
3555 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
3558 *) Add some demos for certificate and certificate request creation.
3561 *) Make maximum certificate chain size accepted from the peer application
3562 settable (SSL*_get/set_max_cert_list()), as proposed by
3563 "Douglas E. Engert" <deengert@anl.gov>.
3566 *) Add support for shared libraries for Unixware-7
3567 (Boyd Lynn Gerber <gerberb@zenez.com>).
3570 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
3571 be done prior to destruction. Use this to unload error strings from
3572 ENGINEs that load their own error strings. NB: This adds two new API
3573 functions to "get" and "set" this destroy handler in an ENGINE.
3576 *) Alter all existing ENGINE implementations (except "openssl" and
3577 "openbsd") to dynamically instantiate their own error strings. This
3578 makes them more flexible to be built both as statically-linked ENGINEs
3579 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
3580 Also, add stub code to each that makes building them as self-contained
3581 shared-libraries easier (see README.ENGINE).
3584 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
3585 implementations into applications that are completely implemented in
3586 self-contained shared-libraries. The "dynamic" ENGINE exposes control
3587 commands that can be used to configure what shared-library to load and
3588 to control aspects of the way it is handled. Also, made an update to
3589 the README.ENGINE file that brings its information up-to-date and
3590 provides some information and instructions on the "dynamic" ENGINE
3591 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
3594 *) Make it possible to unload ranges of ERR strings with a new
3595 "ERR_unload_strings" function.
3598 *) Add a copy() function to EVP_MD.
3601 *) Make EVP_MD routines take a context pointer instead of just the
3602 md_data void pointer.
3605 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
3606 that the digest can only process a single chunk of data
3607 (typically because it is provided by a piece of
3608 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
3609 is only going to provide a single chunk of data, and hence the
3610 framework needn't accumulate the data for oneshot drivers.
3613 *) As with "ERR", make it possible to replace the underlying "ex_data"
3614 functions. This change also alters the storage and management of global
3615 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
3616 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
3617 index counters. The API functions that use this state have been changed
3618 to take a "class_index" rather&nb
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