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 *) Fix compression algorithm handling: if resuming a session use the
48 compression algorithm of the resumed session instead of determining
49 it from client hello again. Don't allow server to change algorithm.
52 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
53 change when encrypting or decrypting.
56 *) Add load_crls() function to apps tidying load_certs() too. Add option
57 to verify utility to allow additional CRLs to be included.
60 *) Update OCSP request code to permit adding custom headers to the request:
61 some responders need this.
64 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
66 [Julia Lawall <julia@diku.dk>]
68 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
69 needlessly dereferenced structures, used obsolete functions and
70 didn't handle all updated verify codes correctly.
73 *) Disable MD2 in the default configuration.
76 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
77 indicate the initial BIO being pushed or popped. This makes it possible
78 to determine whether the BIO is the one explicitly called or as a result
79 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
80 it handles reference counts correctly and doesn't zero out the I/O bio
81 when it is not being explicitly popped. WARNING: applications which
82 included workarounds for the old buggy behaviour will need to be modified
83 or they could free up already freed BIOs.
86 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
87 renaming to all platforms (within the 0.9.8 branch, this was
88 done conditionally on Netware platforms to avoid a name clash).
89 [Guenter <lists@gknw.net>]
91 *) Add ECDHE and PSK support to DTLS.
92 [Michael Tuexen <tuexen@fh-muenster.de>]
94 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
98 *) Add "missing" function EVP_MD_flags() (without this the only way to
99 retrieve a digest flags is by accessing the structure directly. Update
100 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
101 or cipher is registered as in the "from" argument. Print out all
102 registered digests in the dgst usage message instead of manually
103 attempting to work them out.
106 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
107 this allows the use of compression and extensions. Change default cipher
108 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
109 by default unless an application cipher string requests it.
112 *) Alter match criteria in PKCS12_parse(). It used to try to use local
113 key ids to find matching certificates and keys but some PKCS#12 files
114 don't follow the (somewhat unwritten) rules and this strategy fails.
115 Now just gather all certificates together and the first private key
116 then look for the first certificate that matches the key.
119 *) Support use of registered digest and cipher names for dgst and cipher
120 commands instead of having to add each one as a special case. So now
127 openssl dgst -sha256 foo
129 and this works for ENGINE based algorithms too.
133 *) Update Gost ENGINE to support parameter files.
134 [Victor B. Wagner <vitus@cryptocom.ru>]
136 *) Support GeneralizedTime in ca utility.
137 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
139 *) Enhance the hash format used for certificate directory links. The new
140 form uses the canonical encoding (meaning equivalent names will work
141 even if they aren't identical) and uses SHA1 instead of MD5. This form
142 is incompatible with the older format and as a result c_rehash should
143 be used to rebuild symbolic links.
146 *) Make PKCS#8 the default write format for private keys, replacing the
147 traditional format. This form is standardised, more secure and doesn't
148 include an implicit MD5 dependency.
151 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
152 committed to OpenSSL should pass this lot as a minimum.
155 *) Add session ticket override functionality for use by EAP-FAST.
156 [Jouni Malinen <j@w1.fi>]
158 *) Modify HMAC functions to return a value. Since these can be implemented
159 in an ENGINE errors can occur.
162 *) Type-checked OBJ_bsearch_ex.
165 *) Type-checked OBJ_bsearch. Also some constification necessitated
166 by type-checking. Still to come: TXT_DB, bsearch(?),
167 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
171 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
172 seconds to a tm structure directly, instead of going through OS
173 specific date routines. This avoids any issues with OS routines such
174 as the year 2038 bug. New *_adj() functions for ASN1 time structures
175 and X509_time_adj_ex() to cover the extended range. The existing
176 X509_time_adj() is still usable and will no longer have any date issues.
179 *) Delta CRL support. New use deltas option which will attempt to locate
180 and search any appropriate delta CRLs available.
182 This work was sponsored by Google.
185 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
186 code and add additional score elements. Validate alternate CRL paths
187 as part of the CRL checking and indicate a new error "CRL path validation
188 error" in this case. Applications wanting additional details can use
189 the verify callback and check the new "parent" field. If this is not
190 NULL CRL path validation is taking place. Existing applications wont
191 see this because it requires extended CRL support which is off by
194 This work was sponsored by Google.
197 *) Support for freshest CRL extension.
199 This work was sponsored by Google.
202 *) Initial indirect CRL support. Currently only supported in the CRLs
203 passed directly and not via lookup. Process certificate issuer
204 CRL entry extension and lookup CRL entries by bother issuer name
205 and serial number. Check and process CRL issuer entry in IDP extension.
207 This work was sponsored by Google.
210 *) Add support for distinct certificate and CRL paths. The CRL issuer
211 certificate is validated separately in this case. Only enabled if
212 an extended CRL support flag is set: this flag will enable additional
213 CRL functionality in future.
215 This work was sponsored by Google.
218 *) Add support for policy mappings extension.
220 This work was sponsored by Google.
223 *) Fixes to pathlength constraint, self issued certificate handling,
224 policy processing to align with RFC3280 and PKITS tests.
226 This work was sponsored by Google.
229 *) Support for name constraints certificate extension. DN, email, DNS
230 and URI types are currently supported.
232 This work was sponsored by Google.
235 *) To cater for systems that provide a pointer-based thread ID rather
236 than numeric, deprecate the current numeric thread ID mechanism and
237 replace it with a structure and associated callback type. This
238 mechanism allows a numeric "hash" to be extracted from a thread ID in
239 either case, and on platforms where pointers are larger than 'long',
240 mixing is done to help ensure the numeric 'hash' is usable even if it
241 can't be guaranteed unique. The default mechanism is to use "&errno"
242 as a pointer-based thread ID to distinguish between threads.
244 Applications that want to provide their own thread IDs should now use
245 CRYPTO_THREADID_set_callback() to register a callback that will call
246 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
248 Note that ERR_remove_state() is now deprecated, because it is tied
249 to the assumption that thread IDs are numeric. ERR_remove_state(0)
250 to free the current thread's error state should be replaced by
251 ERR_remove_thread_state(NULL).
253 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
254 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
255 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
256 application was previously providing a numeric thread callback that
257 was inappropriate for distinguishing threads, then uniqueness might
258 have been obtained with &errno that happened immediately in the
259 intermediate development versions of OpenSSL; this is no longer the
260 case, the numeric thread callback will now override the automatic use
262 [Geoff Thorpe, with help from Bodo Moeller]
264 *) Initial support for different CRL issuing certificates. This covers a
265 simple case where the self issued certificates in the chain exist and
266 the real CRL issuer is higher in the existing chain.
268 This work was sponsored by Google.
271 *) Removed effectively defunct crypto/store from the build.
274 *) Revamp of STACK to provide stronger type-checking. Still to come:
275 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
276 ASN1_STRING, CONF_VALUE.
279 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
280 RAM on SSL connections. This option can save about 34k per idle SSL.
283 *) Revamp of LHASH to provide stronger type-checking. Still to come:
284 STACK, TXT_DB, bsearch, qsort.
287 *) Initial support for Cryptographic Message Syntax (aka CMS) based
288 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
289 support for data, signedData, compressedData, digestedData and
290 encryptedData, envelopedData types included. Scripts to check against
291 RFC4134 examples draft and interop and consistency checks of many
292 content types and variants.
295 *) Add options to enc utility to support use of zlib compression BIO.
298 *) Extend mk1mf to support importing of options and assembly language
299 files from Configure script, currently only included in VC-WIN32.
300 The assembly language rules can now optionally generate the source
301 files from the associated perl scripts.
304 *) Implement remaining functionality needed to support GOST ciphersuites.
305 Interop testing has been performed using CryptoPro implementations.
306 [Victor B. Wagner <vitus@cryptocom.ru>]
308 *) s390x assembler pack.
311 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
315 *) Implement Opaque PRF Input TLS extension as specified in
316 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
317 official specification yet and no extension type assignment by
318 IANA exists, this extension (for now) will have to be explicitly
319 enabled when building OpenSSL by providing the extension number
320 to use. For example, specify an option
322 -DTLSEXT_TYPE_opaque_prf_input=0x9527
324 to the "config" or "Configure" script to enable the extension,
325 assuming extension number 0x9527 (which is a completely arbitrary
326 and unofficial assignment based on the MD5 hash of the Internet
327 Draft). Note that by doing so, you potentially lose
328 interoperability with other TLS implementations since these might
329 be using the same extension number for other purposes.
331 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
332 opaque PRF input value to use in the handshake. This will create
333 an interal copy of the length-'len' string at 'src', and will
334 return non-zero for success.
336 To get more control and flexibility, provide a callback function
339 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
340 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
344 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
347 Callback function 'cb' will be called in handshakes, and is
348 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
349 Argument 'arg' is for application purposes (the value as given to
350 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
351 be provided to the callback function). The callback function
352 has to return non-zero to report success: usually 1 to use opaque
353 PRF input just if possible, or 2 to enforce use of the opaque PRF
354 input. In the latter case, the library will abort the handshake
355 if opaque PRF input is not successfully negotiated.
357 Arguments 'peerinput' and 'len' given to the callback function
358 will always be NULL and 0 in the case of a client. A server will
359 see the client's opaque PRF input through these variables if
360 available (NULL and 0 otherwise). Note that if the server
361 provides an opaque PRF input, the length must be the same as the
362 length of the client's opaque PRF input.
364 Note that the callback function will only be called when creating
365 a new session (session resumption can resume whatever was
366 previously negotiated), and will not be called in SSL 2.0
367 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
368 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
369 for applications that need to enforce opaque PRF input.
373 *) Update ssl code to support digests other than SHA1+MD5 for handshake
376 [Victor B. Wagner <vitus@cryptocom.ru>]
378 *) Add RFC4507 support to OpenSSL. This includes the corrections in
379 RFC4507bis. The encrypted ticket format is an encrypted encoded
380 SSL_SESSION structure, that way new session features are automatically
383 If a client application caches session in an SSL_SESSION structure
384 support is transparent because tickets are now stored in the encoded
387 The SSL_CTX structure automatically generates keys for ticket
388 protection in servers so again support should be possible
389 with no application modification.
391 If a client or server wishes to disable RFC4507 support then the option
392 SSL_OP_NO_TICKET can be set.
394 Add a TLS extension debugging callback to allow the contents of any client
395 or server extensions to be examined.
397 This work was sponsored by Google.
400 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
401 OpenSSL should now compile cleanly on gcc 4.2
402 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
404 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
405 support including streaming MAC support: this is required for GOST
407 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
409 *) Add option -stream to use PKCS#7 streaming in smime utility. New
410 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
411 to output in BER and PEM format.
414 *) Experimental support for use of HMAC via EVP_PKEY interface. This
415 allows HMAC to be handled via the EVP_DigestSign*() interface. The
416 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
417 ENGINE support for HMAC keys which are unextractable. New -mac and
418 -macopt options to dgst utility.
421 *) New option -sigopt to dgst utility. Update dgst to use
422 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
423 alternative signing paramaters such as X9.31 or PSS in the dgst
427 *) Change ssl_cipher_apply_rule(), the internal function that does
428 the work each time a ciphersuite string requests enabling
429 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
430 removing ("!foo+bar") a class of ciphersuites: Now it maintains
431 the order of disabled ciphersuites such that those ciphersuites
432 that most recently went from enabled to disabled not only stay
433 in order with respect to each other, but also have higher priority
434 than other disabled ciphersuites the next time ciphersuites are
437 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
438 the same ciphersuites as with "HIGH" alone, but in a specific
439 order where the PSK ciphersuites come first (since they are the
440 most recently disabled ciphersuites when "HIGH" is parsed).
442 Also, change ssl_create_cipher_list() (using this new
443 funcionality) such that between otherwise identical
444 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
448 *) Change ssl_create_cipher_list() so that it automatically
449 arranges the ciphersuites in reasonable order before starting
450 to process the rule string. Thus, the definition for "DEFAULT"
451 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
452 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
453 This makes it much easier to arrive at a reasonable default order
454 in applications for which anonymous ciphers are OK (meaning
455 that you can't actually use DEFAULT).
456 [Bodo Moeller; suggested by Victor Duchovni]
458 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
459 processing) into multiple integers instead of setting
460 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
461 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
462 (These masks as well as the individual bit definitions are hidden
463 away into the non-exported interface ssl/ssl_locl.h, so this
464 change to the definition of the SSL_CIPHER structure shouldn't
465 affect applications.) This give us more bits for each of these
466 categories, so there is no longer a need to coagulate AES128 and
467 AES256 into a single algorithm bit, and to coagulate Camellia128
468 and Camellia256 into a single algorithm bit, which has led to all
471 Thus, among other things, the kludge introduced in 0.9.7m and
472 0.9.8e for masking out AES256 independently of AES128 or masking
473 out Camellia256 independently of AES256 is not needed here in 0.9.9.
475 With the change, we also introduce new ciphersuite aliases that
476 so far were missing: "AES128", "AES256", "CAMELLIA128", and
480 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
481 Use the leftmost N bytes of the signature input if the input is
482 larger than the prime q (with N being the size in bytes of q).
485 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
486 it yet and it is largely untested.
489 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
492 *) Initial incomplete changes to avoid need for function casts in OpenSSL
493 some compilers (gcc 4.2 and later) reject their use. Safestack is
494 reimplemented. Update ASN1 to avoid use of legacy functions.
497 *) Win32/64 targets are linked with Winsock2.
500 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
501 to external functions. This can be used to increase CRL handling
502 efficiency especially when CRLs are very large by (for example) storing
503 the CRL revoked certificates in a database.
506 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
507 new CRLs added to a directory can be used. New command line option
508 -verify_return_error to s_client and s_server. This causes real errors
509 to be returned by the verify callback instead of carrying on no matter
510 what. This reflects the way a "real world" verify callback would behave.
513 *) GOST engine, supporting several GOST algorithms and public key formats.
514 Kindly donated by Cryptocom.
517 *) Partial support for Issuing Distribution Point CRL extension. CRLs
518 partitioned by DP are handled but no indirect CRL or reason partitioning
519 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
520 selected via a scoring technique which handles IDP and AKID in CRLs.
523 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
524 will ultimately be used for all verify operations: this will remove the
525 X509_STORE dependency on certificate verification and allow alternative
526 lookup methods. X509_STORE based implementations of these two callbacks.
529 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
530 Modify get_crl() to find a valid (unexpired) CRL if possible.
533 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
534 this would be called X509_CRL_cmp() but that name is already used by
535 a function that just compares CRL issuer names. Cache several CRL
536 extensions in X509_CRL structure and cache CRLDP in X509.
539 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
540 this maps equivalent X509_NAME structures into a consistent structure.
541 Name comparison can then be performed rapidly using memcmp().
544 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
548 *) Allow digests to supply their own micalg string for S/MIME type using
549 the ctrl EVP_MD_CTRL_MICALG.
552 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
553 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
554 ctrl. It can then customise the structure before and/or after signing
558 *) New function OBJ_add_sigid() to allow application defined signature OIDs
559 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
560 to free up any added signature OIDs.
563 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
564 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
565 digest and cipher tables. New options added to openssl utility:
566 list-message-digest-algorithms and list-cipher-algorithms.
569 *) Change the array representation of binary polynomials: the list
570 of degrees of non-zero coefficients is now terminated with -1.
571 Previously it was terminated with 0, which was also part of the
572 value; thus, the array representation was not applicable to
573 polynomials where t^0 has coefficient zero. This change makes
574 the array representation useful in a more general context.
577 *) Various modifications and fixes to SSL/TLS cipher string
578 handling. For ECC, the code now distinguishes between fixed ECDH
579 with RSA certificates on the one hand and with ECDSA certificates
580 on the other hand, since these are separate ciphersuites. The
581 unused code for Fortezza ciphersuites has been removed.
583 For consistency with EDH, ephemeral ECDH is now called "EECDH"
584 (not "ECDHE"). For consistency with the code for DH
585 certificates, use of ECDH certificates is now considered ECDH
586 authentication, not RSA or ECDSA authentication (the latter is
587 merely the CA's signing algorithm and not actively used in the
590 The temporary ciphersuite alias "ECCdraft" is no longer
591 available, and ECC ciphersuites are no longer excluded from "ALL"
592 and "DEFAULT". The following aliases now exist for RFC 4492
593 ciphersuites, most of these by analogy with the DH case:
595 kECDHr - ECDH cert, signed with RSA
596 kECDHe - ECDH cert, signed with ECDSA
597 kECDH - ECDH cert (signed with either RSA or ECDSA)
598 kEECDH - ephemeral ECDH
599 ECDH - ECDH cert or ephemeral ECDH
605 AECDH - anonymous ECDH
606 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
610 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
611 Use correct micalg parameters depending on digest(s) in signed message.
614 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
615 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
618 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
619 an engine to register a method. Add ENGINE lookups for methods and
620 functional reference processing.
623 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
624 EVP_{Sign,Verify}* which allow an application to customise the signature
628 *) New -resign option to smime utility. This adds one or more signers
629 to an existing PKCS#7 signedData structure. Also -md option to use an
630 alternative message digest algorithm for signing.
633 *) Tidy up PKCS#7 routines and add new functions to make it easier to
634 create PKCS7 structures containing multiple signers. Update smime
635 application to support multiple signers.
638 *) New -macalg option to pkcs12 utility to allow setting of an alternative
642 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
643 Reorganize PBE internals to lookup from a static table using NIDs,
644 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
645 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
646 PRF which will be automatically used with PBES2.
649 *) Replace the algorithm specific calls to generate keys in "req" with the
653 *) Update PKCS#7 enveloped data routines to use new API. This is now
654 supported by any public key method supporting the encrypt operation. A
655 ctrl is added to allow the public key algorithm to examine or modify
656 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
660 *) Add a ctrl to asn1 method to allow a public key algorithm to express
661 a default digest type to use. In most cases this will be SHA1 but some
662 algorithms (such as GOST) need to specify an alternative digest. The
663 return value indicates how strong the prefernce is 1 means optional and
664 2 is mandatory (that is it is the only supported type). Modify
665 ASN1_item_sign() to accept a NULL digest argument to indicate it should
666 use the default md. Update openssl utilities to use the default digest
667 type for signing if it is not explicitly indicated.
670 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
671 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
672 signing method from the key type. This effectively removes the link
673 between digests and public key types.
676 *) Add an OID cross reference table and utility functions. Its purpose is to
677 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
678 rsaEncryption. This will allow some of the algorithm specific hackery
679 needed to use the correct OID to be removed.
682 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
683 structures for PKCS7_sign(). They are now set up by the relevant public
687 *) Add provisional EC pkey method with support for ECDSA and ECDH.
690 *) Add support for key derivation (agreement) in the API, DH method and
694 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
695 public and private key formats. As a side effect these add additional
696 command line functionality not previously available: DSA signatures can be
697 generated and verified using pkeyutl and DH key support and generation in
702 [Oliver Tappe <zooey@hirschkaefer.de>]
704 *) New make target "install_html_docs" installs HTML renditions of the
706 [Oliver Tappe <zooey@hirschkaefer.de>]
708 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
709 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
710 support key and parameter generation and add initial key generation
711 functionality for RSA.
714 *) Add functions for main EVP_PKEY_method operations. The undocumented
715 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
716 EVP_PKEY_{encrypt,decrypt}_old.
719 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
720 key API, doesn't do much yet.
723 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
724 public key algorithms. New option to openssl utility:
725 "list-public-key-algorithms" to print out info.
728 *) Implement the Supported Elliptic Curves Extension for
729 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
732 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
733 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
736 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
737 utilities such as rsa, dsa, dsaparam etc except they process any key
741 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
742 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
743 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
747 *) Initial support for pluggable public key ASN1.
748 De-spaghettify the public key ASN1 handling. Move public and private
749 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
750 algorithm specific handling to a single module within the relevant
751 algorithm directory. Add functions to allow (near) opaque processing
752 of public and private key structures.
755 *) Implement the Supported Point Formats Extension for
756 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
759 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
760 for the psk identity [hint] and the psk callback functions to the
761 SSL_SESSION, SSL and SSL_CTX structure.
764 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
768 SSL_CTX_use_psk_identity_hint
769 SSL_get_psk_identity_hint
771 SSL_use_psk_identity_hint
773 [Mika Kousa and Pasi Eronen of Nokia Corporation]
775 *) Add RFC 3161 compliant time stamp request creation, response generation
776 and response verification functionality.
777 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
779 *) Add initial support for TLS extensions, specifically for the server_name
780 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
781 have new members for a host name. The SSL data structure has an
782 additional member SSL_CTX *initial_ctx so that new sessions can be
783 stored in that context to allow for session resumption, even after the
784 SSL has been switched to a new SSL_CTX in reaction to a client's
785 server_name extension.
787 New functions (subject to change):
790 SSL_get_servername_type()
793 New CTRL codes and macros (subject to change):
795 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
796 - SSL_CTX_set_tlsext_servername_callback()
797 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
798 - SSL_CTX_set_tlsext_servername_arg()
799 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
801 openssl s_client has a new '-servername ...' option.
803 openssl s_server has new options '-servername_host ...', '-cert2 ...',
804 '-key2 ...', '-servername_fatal' (subject to change). This allows
805 testing the HostName extension for a specific single host name ('-cert'
806 and '-key' remain fallbacks for handshakes without HostName
807 negotiation). If the unrecogninzed_name alert has to be sent, this by
808 default is a warning; it becomes fatal with the '-servername_fatal'
811 [Peter Sylvester, Remy Allais, Christophe Renou]
813 *) Whirlpool hash implementation is added.
816 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
817 bn(64,32). Because of instruction set limitations it doesn't have
818 any negative impact on performance. This was done mostly in order
819 to make it possible to share assembler modules, such as bn_mul_mont
820 implementations, between 32- and 64-bit builds without hassle.
823 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
824 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
828 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
829 dedicated Montgomery multiplication procedure, is introduced.
830 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
831 "64-bit" performance on certain 32-bit targets.
834 *) New option SSL_OP_NO_COMP to disable use of compression selectively
835 in SSL structures. New SSL ctrl to set maximum send fragment size.
836 Save memory by seeting the I/O buffer sizes dynamically instead of
837 using the maximum available value.
840 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
841 in addition to the text details.
844 *) Very, very preliminary EXPERIMENTAL support for printing of general
845 ASN1 structures. This currently produces rather ugly output and doesn't
846 handle several customised structures at all.
849 *) Integrated support for PVK file format and some related formats such
850 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
851 these in the 'rsa' and 'dsa' utilities.
854 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
857 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
858 place for the (very old) "NETSCAPE" format certificates which are now
859 handled using new ASN1 code equivalents.
862 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
863 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
864 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
867 *) Modify CRL distribution points extension code to print out previously
868 unsupported fields. Enhance extension setting code to allow setting of
872 *) Add print and set support for Issuing Distribution Point CRL extension.
875 *) Change 'Configure' script to enable Camellia by default.
878 Changes between 0.9.8l (?) and 0.9.8m (?) [xx XXX xxxx]
880 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
881 connect (but not renegotiate) with servers which do not support RI.
882 Until RI is more widely deployed this option is enabled by default.
885 *) Add "missing" ssl ctrls to clear options and mode.
888 *) If client attempts to renegotiate and doesn't support RI respond with
889 a no_renegotiation alert as required by draft-ietf-tls-renegotiation.
890 Some renegotiating TLS clients will continue a connection gracefully
891 when they receive the alert. Unfortunately OpenSSL mishandled
892 this alert and would hang waiting for a server hello which it will never
893 receive. Now we treat a received no_renegotiation alert as a fatal
894 error. This is because applications requesting a renegotiation might well
895 expect it to succeed and would have no code in place to handle the server
896 denying it so the only safe thing to do is to terminate the connection.
899 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
900 peer supports secure renegotiation and 0 otherwise. Print out peer
901 renegotiation support in s_client/s_server.
904 *) Replace the highly broken and deprecated SPKAC certification method with
905 the updated NID creation version. This should correctly handle UTF8.
908 *) Implement draft-ietf-tls-renegotiation. Re-enable
909 renegotiation but require the extension as needed. Unfortunately,
910 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION turns out to be a
911 bad idea. It has been replaced by
912 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
913 SSL_CTX_set_options(). This is really not recommended unless you
914 know what you are doing.
915 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
917 *) Fixes to stateless session resumption handling. Use initial_ctx when
918 issuing and attempting to decrypt tickets in case it has changed during
919 servername handling. Use a non-zero length session ID when attempting
920 stateless session resumption: this makes it possible to determine if
921 a resumption has occurred immediately after receiving server hello
922 (several places in OpenSSL subtly assume this) instead of later in
926 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
927 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
928 fixes for a few places where the return code is not checked
930 [Julia Lawall <julia@diku.dk>]
932 *) Add --strict-warnings option to Configure script to include devteam
933 warnings in other configurations.
936 *) Add support for --libdir option and LIBDIR variable in makefiles. This
937 makes it possible to install openssl libraries in locations which
938 have names other than "lib", for example "/usr/lib64" which some
940 [Steve Henson, based on patch from Jeremy Utley]
942 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
943 X690 8.9.12 and can produce some misleading textual output of OIDs.
944 [Steve Henson, reported by Dan Kaminsky]
946 *) Delete MD2 from algorithm tables. This follows the recommendation in
947 several standards that it is not used in new applications due to
948 several cryptographic weaknesses. For binary compatibility reasons
949 the MD2 API is still compiled in by default.
952 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
956 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
957 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
959 [Guenter <lists@gknw.net>]
961 *) Fix the server certificate chain building code to use X509_verify_cert(),
962 it used to have an ad-hoc builder which was unable to cope with anything
963 other than a simple chain.
964 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
966 *) Don't check self signed certificate signatures in X509_verify_cert()
967 by default (a flag can override this): it just wastes time without
968 adding any security. As a useful side effect self signed root CAs
969 with non-FIPS digests are now usable in FIPS mode.
972 *) In dtls1_process_out_of_seq_message() the check if the current message
973 is already buffered was missing. For every new message was memory
974 allocated, allowing an attacker to perform an denial of service attack
975 with sending out of seq handshake messages until there is no memory
976 left. Additionally every future messege was buffered, even if the
977 sequence number made no sense and would be part of another handshake.
978 So only messages with sequence numbers less than 10 in advance will be
979 buffered. (CVE-2009-1378)
980 [Robin Seggelmann, discovered by Daniel Mentz]
982 *) Records are buffered if they arrive with a future epoch to be
983 processed after finishing the corresponding handshake. There is
984 currently no limitation to this buffer allowing an attacker to perform
985 a DOS attack with sending records with future epochs until there is no
986 memory left. This patch adds the pqueue_size() function to detemine
987 the size of a buffer and limits the record buffer to 100 entries.
989 [Robin Seggelmann, discovered by Daniel Mentz]
991 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
992 parent structure is freed. (CVE-2009-1379)
995 *) Handle non-blocking I/O properly in SSL_shutdown() call.
996 [Darryl Miles <darryl-mailinglists@netbauds.net>]
999 [Ilya O. <vrghost@gmail.com>]
1001 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1003 *) Disable renegotiation completely - this fixes a severe security
1004 problem (CVE-2009-3555) at the cost of breaking all
1005 renegotiation. Renegotiation can be re-enabled by setting
1006 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1007 run-time. This is really not recommended unless you know what
1011 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1013 *) Don't set val to NULL when freeing up structures, it is freed up by
1014 underlying code. If sizeof(void *) > sizeof(long) this can result in
1015 zeroing past the valid field. (CVE-2009-0789)
1016 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1018 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1019 checked correctly. This would allow some invalid signed attributes to
1020 appear to verify correctly. (CVE-2009-0591)
1021 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1023 *) Reject UniversalString and BMPString types with invalid lengths. This
1024 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1025 a legal length. (CVE-2009-0590)
1028 *) Set S/MIME signing as the default purpose rather than setting it
1029 unconditionally. This allows applications to override it at the store
1033 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1034 to handle some structures.
1037 *) Improve efficiency of mem_gets: don't search whole buffer each time
1039 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1041 *) New -hex option for openssl rand.
1044 *) Print out UTF8String and NumericString when parsing ASN1.
1047 *) Support NumericString type for name components.
1050 *) Allow CC in the environment to override the automatically chosen
1051 compiler. Note that nothing is done to ensure flags work with the
1055 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1057 *) Properly check EVP_VerifyFinal() and similar return values
1059 [Ben Laurie, Bodo Moeller, Google Security Team]
1061 *) Enable TLS extensions by default.
1064 *) Allow the CHIL engine to be loaded, whether the application is
1065 multithreaded or not. (This does not release the developer from the
1066 obligation to set up the dynamic locking callbacks.)
1067 [Sander Temme <sander@temme.net>]
1069 *) Use correct exit code if there is an error in dgst command.
1070 [Steve Henson; problem pointed out by Roland Dirlewanger]
1072 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1073 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1076 *) Add experimental JPAKE support, including demo authentication in
1077 s_client and s_server.
1080 *) Set the comparison function in v3_addr_canonize().
1081 [Rob Austein <sra@hactrn.net>]
1083 *) Add support for XMPP STARTTLS in s_client.
1084 [Philip Paeps <philip@freebsd.org>]
1086 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1087 to ensure that even with this option, only ciphersuites in the
1088 server's preference list will be accepted. (Note that the option
1089 applies only when resuming a session, so the earlier behavior was
1090 just about the algorithm choice for symmetric cryptography.)
1093 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1095 *) Fix NULL pointer dereference if a DTLS server received
1096 ChangeCipherSpec as first record (CVE-2009-1386).
1099 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1100 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1103 *) The fix in 0.9.8c that supposedly got rid of unsafe
1104 double-checked locking was incomplete for RSA blinding,
1105 addressing just one layer of what turns out to have been
1106 doubly unsafe triple-checked locking.
1108 So now fix this for real by retiring the MONT_HELPER macro
1109 in crypto/rsa/rsa_eay.c.
1111 [Bodo Moeller; problem pointed out by Marius Schilder]
1113 *) Various precautionary measures:
1115 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1117 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1118 (NB: This would require knowledge of the secret session ticket key
1119 to exploit, in which case you'd be SOL either way.)
1121 - Change bn_nist.c so that it will properly handle input BIGNUMs
1122 outside the expected range.
1124 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1127 [Neel Mehta, Bodo Moeller]
1129 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1130 the load fails. Useful for distros.
1131 [Ben Laurie and the FreeBSD team]
1133 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1136 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1139 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1141 This work was sponsored by Logica.
1144 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1145 keystores. Support for SSL/TLS client authentication too.
1146 Not compiled unless enable-capieng specified to Configure.
1148 This work was sponsored by Logica.
1151 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1152 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1153 attribute creation routines such as certifcate requests and PKCS#12
1157 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1159 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1160 handshake which could lead to a cilent crash as found using the
1161 Codenomicon TLS test suite (CVE-2008-1672)
1162 [Steve Henson, Mark Cox]
1164 *) Fix double free in TLS server name extensions which could lead to
1165 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1168 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1170 Clear the error queue to ensure that error entries left from
1171 older function calls do not interfere with the correct operation.
1172 [Lutz Jaenicke, Erik de Castro Lopo]
1174 *) Remove root CA certificates of commercial CAs:
1176 The OpenSSL project does not recommend any specific CA and does not
1177 have any policy with respect to including or excluding any CA.
1178 Therefore it does not make any sense to ship an arbitrary selection
1179 of root CA certificates with the OpenSSL software.
1182 *) RSA OAEP patches to fix two separate invalid memory reads.
1183 The first one involves inputs when 'lzero' is greater than
1184 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1185 before the beginning of from). The second one involves inputs where
1186 the 'db' section contains nothing but zeroes (there is a one-byte
1187 invalid read after the end of 'db').
1188 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1190 *) Partial backport from 0.9.9-dev:
1192 Introduce bn_mul_mont (dedicated Montgomery multiplication
1193 procedure) as a candidate for BIGNUM assembler implementation.
1194 While 0.9.9-dev uses assembler for various architectures, only
1195 x86_64 is available by default here in the 0.9.8 branch, and
1196 32-bit x86 is available through a compile-time setting.
1198 To try the 32-bit x86 assembler implementation, use Configure
1199 option "enable-montasm" (which exists only for this backport).
1201 As "enable-montasm" for 32-bit x86 disclaims code stability
1202 anyway, in this constellation we activate additional code
1203 backported from 0.9.9-dev for further performance improvements,
1204 namely BN_from_montgomery_word. (To enable this otherwise,
1205 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1207 [Andy Polyakov (backport partially by Bodo Moeller)]
1209 *) Add TLS session ticket callback. This allows an application to set
1210 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1211 values. This is useful for key rollover for example where several key
1212 sets may exist with different names.
1215 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1216 This was broken until now in 0.9.8 releases, such that the only way
1217 a registered ENGINE could be used (assuming it initialises
1218 successfully on the host) was to explicitly set it as the default
1219 for the relevant algorithms. This is in contradiction with 0.9.7
1220 behaviour and the documentation. With this fix, when an ENGINE is
1221 registered into a given algorithm's table of implementations, the
1222 'uptodate' flag is reset so that auto-discovery will be used next
1223 time a new context for that algorithm attempts to select an
1225 [Ian Lister (tweaked by Geoff Thorpe)]
1227 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1228 implemention in the following ways:
1230 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1233 Lack of BER streaming support means one pass streaming processing is
1234 only supported if data is detached: setting the streaming flag is
1235 ignored for embedded content.
1237 CMS support is disabled by default and must be explicitly enabled
1238 with the enable-cms configuration option.
1241 *) Update the GMP engine glue to do direct copies between BIGNUM and
1242 mpz_t when openssl and GMP use the same limb size. Otherwise the
1243 existing "conversion via a text string export" trick is still used.
1244 [Paul Sheer <paulsheer@gmail.com>]
1246 *) Zlib compression BIO. This is a filter BIO which compressed and
1247 uncompresses any data passed through it.
1250 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1251 RFC3394 compatible AES key wrapping.
1254 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1255 sets string data without copying. X509_ALGOR_set0() and
1256 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1257 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1258 from an X509_ATTRIBUTE structure optionally checking it occurs only
1259 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1263 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1264 to get the expected BN_FLG_CONSTTIME behavior.
1265 [Bodo Moeller (Google)]
1269 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1270 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1271 - added some more tests to do_tests.pl
1272 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1273 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1274 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1275 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1276 - various changes to netware.pl to enable gcc-cross builds on Win32
1278 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1279 - various changes to fix missing prototype warnings
1280 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1281 - added AES, WHIRLPOOL and CPUID assembler code to build files
1282 - added missing AES assembler make rules to mk1mf.pl
1283 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1284 [Guenter Knauf <eflash@gmx.net>]
1286 *) Implement certificate status request TLS extension defined in RFC3546.
1287 A client can set the appropriate parameters and receive the encoded
1288 OCSP response via a callback. A server can query the supplied parameters
1289 and set the encoded OCSP response in the callback. Add simplified examples
1290 to s_client and s_server.
1293 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1295 *) Fix various bugs:
1296 + Binary incompatibility of ssl_ctx_st structure
1297 + DTLS interoperation with non-compliant servers
1298 + Don't call get_session_cb() without proposed session
1299 + Fix ia64 assembler code
1300 [Andy Polyakov, Steve Henson]
1302 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1304 *) DTLS Handshake overhaul. There were longstanding issues with
1305 OpenSSL DTLS implementation, which were making it impossible for
1306 RFC 4347 compliant client to communicate with OpenSSL server.
1307 Unfortunately just fixing these incompatibilities would "cut off"
1308 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1309 server keeps tolerating non RFC compliant syntax. The opposite is
1310 not true, 0.9.8f client can not communicate with earlier server.
1311 This update even addresses CVE-2007-4995.
1314 *) Changes to avoid need for function casts in OpenSSL: some compilers
1315 (gcc 4.2 and later) reject their use.
1316 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1319 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1320 RFC4507bis. The encrypted ticket format is an encrypted encoded
1321 SSL_SESSION structure, that way new session features are automatically
1324 If a client application caches session in an SSL_SESSION structure
1325 support is transparent because tickets are now stored in the encoded
1328 The SSL_CTX structure automatically generates keys for ticket
1329 protection in servers so again support should be possible
1330 with no application modification.
1332 If a client or server wishes to disable RFC4507 support then the option
1333 SSL_OP_NO_TICKET can be set.
1335 Add a TLS extension debugging callback to allow the contents of any client
1336 or server extensions to be examined.
1338 This work was sponsored by Google.
1341 *) Add initial support for TLS extensions, specifically for the server_name
1342 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1343 have new members for a host name. The SSL data structure has an
1344 additional member SSL_CTX *initial_ctx so that new sessions can be
1345 stored in that context to allow for session resumption, even after the
1346 SSL has been switched to a new SSL_CTX in reaction to a client's
1347 server_name extension.
1349 New functions (subject to change):
1351 SSL_get_servername()
1352 SSL_get_servername_type()
1355 New CTRL codes and macros (subject to change):
1357 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1358 - SSL_CTX_set_tlsext_servername_callback()
1359 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1360 - SSL_CTX_set_tlsext_servername_arg()
1361 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1363 openssl s_client has a new '-servername ...' option.
1365 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1366 '-key2 ...', '-servername_fatal' (subject to change). This allows
1367 testing the HostName extension for a specific single host name ('-cert'
1368 and '-key' remain fallbacks for handshakes without HostName
1369 negotiation). If the unrecogninzed_name alert has to be sent, this by
1370 default is a warning; it becomes fatal with the '-servername_fatal'
1373 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1375 *) Add AES and SSE2 assembly language support to VC++ build.
1378 *) Mitigate attack on final subtraction in Montgomery reduction.
1381 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1382 (which previously caused an internal error).
1385 *) Squeeze another 10% out of IGE mode when in != out.
1388 *) AES IGE mode speedup.
1389 [Dean Gaudet (Google)]
1391 *) Add the Korean symmetric 128-bit cipher SEED (see
1392 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1393 add SEED ciphersuites from RFC 4162:
1395 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1396 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1397 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1398 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1400 To minimize changes between patchlevels in the OpenSSL 0.9.8
1401 series, SEED remains excluded from compilation unless OpenSSL
1402 is configured with 'enable-seed'.
1403 [KISA, Bodo Moeller]
1405 *) Mitigate branch prediction attacks, which can be practical if a
1406 single processor is shared, allowing a spy process to extract
1407 information. For detailed background information, see
1408 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1409 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1410 and Necessary Software Countermeasures"). The core of the change
1411 are new versions BN_div_no_branch() and
1412 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1413 respectively, which are slower, but avoid the security-relevant
1414 conditional branches. These are automatically called by BN_div()
1415 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1416 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1417 remove a conditional branch.
1419 BN_FLG_CONSTTIME is the new name for the previous
1420 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1421 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1422 in the exponent causes BN_mod_exp_mont() to use the alternative
1423 implementation in BN_mod_exp_mont_consttime().) The old name
1424 remains as a deprecated alias.
1426 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1427 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1428 constant-time implementations for more than just exponentiation.
1429 Here too the old name is kept as a deprecated alias.
1431 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1432 the BN_BLINDING structure gets an independent copy of the
1433 modulus. This means that the previous "BIGNUM *m" argument to
1434 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1435 essentially becomes "const BIGNUM *m", although we can't actually
1436 change this in the header file before 0.9.9. It allows
1437 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1438 enable BN_FLG_CONSTTIME.
1440 [Matthew D Wood (Intel Corp)]
1442 *) In the SSL/TLS server implementation, be strict about session ID
1443 context matching (which matters if an application uses a single
1444 external cache for different purposes). Previously,
1445 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1446 set. This did ensure strict client verification, but meant that,
1447 with applications using a single external cache for quite
1448 different requirements, clients could circumvent ciphersuite
1449 restrictions for a given session ID context by starting a session
1450 in a different context.
1453 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1454 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1455 authentication-only ciphersuites.
1458 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1459 not complete and could lead to a possible single byte overflow
1460 (CVE-2007-5135) [Ben Laurie]
1462 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1464 *) Since AES128 and AES256 (and similarly Camellia128 and
1465 Camellia256) share a single mask bit in the logic of
1466 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1467 kludge to work properly if AES128 is available and AES256 isn't
1468 (or if Camellia128 is available and Camellia256 isn't).
1471 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1472 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1473 When a point or a seed is encoded in a BIT STRING, we need to
1474 prevent the removal of trailing zero bits to get the proper DER
1475 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1476 of a NamedBitList, for which trailing 0 bits need to be removed.)
1479 *) Have SSL/TLS server implementation tolerate "mismatched" record
1480 protocol version while receiving ClientHello even if the
1481 ClientHello is fragmented. (The server can't insist on the
1482 particular protocol version it has chosen before the ServerHello
1483 message has informed the client about his choice.)
1486 *) Add RFC 3779 support.
1487 [Rob Austein for ARIN, Ben Laurie]
1489 *) Load error codes if they are not already present instead of using a
1490 static variable. This allows them to be cleanly unloaded and reloaded.
1491 Improve header file function name parsing.
1494 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1495 or CAPABILITY handshake as required by RFCs.
1498 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1500 *) Introduce limits to prevent malicious keys being able to
1501 cause a denial of service. (CVE-2006-2940)
1502 [Steve Henson, Bodo Moeller]
1504 *) Fix ASN.1 parsing of certain invalid structures that can result
1505 in a denial of service. (CVE-2006-2937) [Steve Henson]
1507 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1508 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1510 *) Fix SSL client code which could crash if connecting to a
1511 malicious SSLv2 server. (CVE-2006-4343)
1512 [Tavis Ormandy and Will Drewry, Google Security Team]
1514 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1515 match only those. Before that, "AES256-SHA" would be interpreted
1516 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1517 the same strength classification in 0.9.7h) as we currently only
1518 have a single AES bit in the ciphersuite description bitmap.
1519 That change, however, also applied to ciphersuite strings such as
1520 "RC4-MD5" that intentionally matched multiple ciphersuites --
1521 namely, SSL 2.0 ciphersuites in addition to the more common ones
1522 from SSL 3.0/TLS 1.0.
1524 So we change the selection algorithm again: Naming an explicit
1525 ciphersuite selects this one ciphersuite, and any other similar
1526 ciphersuite (same bitmap) from *other* protocol versions.
1527 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1528 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1530 Since SSL 2.0 does not have any ciphersuites for which the
1531 128/256 bit distinction would be relevant, this works for now.
1532 The proper fix will be to use different bits for AES128 and
1533 AES256, which would have avoided the problems from the beginning;
1534 however, bits are scarce, so we can only do this in a new release
1535 (not just a patchlevel) when we can change the SSL_CIPHER
1536 definition to split the single 'unsigned long mask' bitmap into
1537 multiple values to extend the available space.
1541 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1543 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1544 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1546 *) Add AES IGE and biIGE modes.
1549 *) Change the Unix randomness entropy gathering to use poll() when
1550 possible instead of select(), since the latter has some
1551 undesirable limitations.
1552 [Darryl Miles via Richard Levitte and Bodo Moeller]
1554 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
1555 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
1556 cannot be implicitly activated as part of, e.g., the "AES" alias.
1557 However, please upgrade to OpenSSL 0.9.9[-dev] for
1558 non-experimental use of the ECC ciphersuites to get TLS extension
1559 support, which is required for curve and point format negotiation
1560 to avoid potential handshake problems.
1563 *) Disable rogue ciphersuites:
1565 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1566 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1567 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1569 The latter two were purportedly from
1570 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1573 Also deactivate the remaining ciphersuites from
1574 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1575 unofficial, and the ID has long expired.
1578 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1579 dual-core machines) and other potential thread-safety issues.
1582 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
1583 versions), which is now available for royalty-free use
1584 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
1585 Also, add Camellia TLS ciphersuites from RFC 4132.
1587 To minimize changes between patchlevels in the OpenSSL 0.9.8
1588 series, Camellia remains excluded from compilation unless OpenSSL
1589 is configured with 'enable-camellia'.
1592 *) Disable the padding bug check when compression is in use. The padding
1593 bug check assumes the first packet is of even length, this is not
1594 necessarily true if compresssion is enabled and can result in false
1595 positives causing handshake failure. The actual bug test is ancient
1596 code so it is hoped that implementations will either have fixed it by
1597 now or any which still have the bug do not support compression.
1600 Changes between 0.9.8a and 0.9.8b [04 May 2006]
1602 *) When applying a cipher rule check to see if string match is an explicit
1603 cipher suite and only match that one cipher suite if it is.
1606 *) Link in manifests for VC++ if needed.
1607 [Austin Ziegler <halostatue@gmail.com>]
1609 *) Update support for ECC-based TLS ciphersuites according to
1610 draft-ietf-tls-ecc-12.txt with proposed changes (but without
1611 TLS extensions, which are supported starting with the 0.9.9
1612 branch, not in the OpenSSL 0.9.8 branch).
1615 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
1616 opaque EVP_CIPHER_CTX handling.
1619 *) Fixes and enhancements to zlib compression code. We now only use
1620 "zlib1.dll" and use the default __cdecl calling convention on Win32
1621 to conform with the standards mentioned here:
1622 http://www.zlib.net/DLL_FAQ.txt
1623 Static zlib linking now works on Windows and the new --with-zlib-include
1624 --with-zlib-lib options to Configure can be used to supply the location
1625 of the headers and library. Gracefully handle case where zlib library
1629 *) Several fixes and enhancements to the OID generation code. The old code
1630 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
1631 handle numbers larger than ULONG_MAX, truncated printing and had a
1632 non standard OBJ_obj2txt() behaviour.
1635 *) Add support for building of engines under engine/ as shared libraries
1636 under VC++ build system.
1639 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
1640 Hopefully, we will not see any false combination of paths any more.
1643 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
1645 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1646 (part of SSL_OP_ALL). This option used to disable the
1647 countermeasure against man-in-the-middle protocol-version
1648 rollback in the SSL 2.0 server implementation, which is a bad
1649 idea. (CVE-2005-2969)
1651 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1652 for Information Security, National Institute of Advanced Industrial
1653 Science and Technology [AIST], Japan)]
1655 *) Add two function to clear and return the verify parameter flags.
1658 *) Keep cipherlists sorted in the source instead of sorting them at
1659 runtime, thus removing the need for a lock.
1662 *) Avoid some small subgroup attacks in Diffie-Hellman.
1663 [Nick Mathewson and Ben Laurie]
1665 *) Add functions for well-known primes.
1668 *) Extended Windows CE support.
1669 [Satoshi Nakamura and Andy Polyakov]
1671 *) Initialize SSL_METHOD structures at compile time instead of during
1672 runtime, thus removing the need for a lock.
1675 *) Make PKCS7_decrypt() work even if no certificate is supplied by
1676 attempting to decrypt each encrypted key in turn. Add support to
1680 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
1682 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
1685 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
1688 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
1689 key into the same file any more.
1692 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
1695 *) Add -utf8 command line and config file option to 'ca'.
1696 [Stefan <stf@udoma.org]
1698 *) Removed the macro des_crypt(), as it seems to conflict with some
1699 libraries. Use DES_crypt().
1702 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
1703 involves renaming the source and generated shared-libs for
1704 both. The engines will accept the corrected or legacy ids
1705 ('ncipher' and '4758_cca' respectively) when binding. NB,
1706 this only applies when building 'shared'.
1707 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
1709 *) Add attribute functions to EVP_PKEY structure. Modify
1710 PKCS12_create() to recognize a CSP name attribute and
1711 use it. Make -CSP option work again in pkcs12 utility.
1714 *) Add new functionality to the bn blinding code:
1715 - automatic re-creation of the BN_BLINDING parameters after
1716 a fixed number of uses (currently 32)
1717 - add new function for parameter creation
1718 - introduce flags to control the update behaviour of the
1719 BN_BLINDING parameters
1720 - hide BN_BLINDING structure
1721 Add a second BN_BLINDING slot to the RSA structure to improve
1722 performance when a single RSA object is shared among several
1726 *) Add support for DTLS.
1727 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
1729 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
1730 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
1733 *) Remove buggy and incompletet DH cert support from
1734 ssl/ssl_rsa.c and ssl/s3_both.c
1737 *) Use SHA-1 instead of MD5 as the default digest algorithm for
1738 the apps/openssl applications.
1741 *) Compile clean with "-Wall -Wmissing-prototypes
1742 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
1743 DEBUG_SAFESTACK must also be set.
1746 *) Change ./Configure so that certain algorithms can be disabled by default.
1747 The new counterpiece to "no-xxx" is "enable-xxx".
1749 The patented RC5 and MDC2 algorithms will now be disabled unless
1750 "enable-rc5" and "enable-mdc2", respectively, are specified.
1752 (IDEA remains enabled despite being patented. This is because IDEA
1753 is frequently required for interoperability, and there is no license
1754 fee for non-commercial use. As before, "no-idea" can be used to
1755 avoid this algorithm.)
1759 *) Add processing of proxy certificates (see RFC 3820). This work was
1760 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
1761 EGEE (Enabling Grids for E-science in Europe).
1764 *) RC4 performance overhaul on modern architectures/implementations, such
1765 as Intel P4, IA-64 and AMD64.
1768 *) New utility extract-section.pl. This can be used specify an alternative
1769 section number in a pod file instead of having to treat each file as
1770 a separate case in Makefile. This can be done by adding two lines to the
1773 =for comment openssl_section:XXX
1775 The blank line is mandatory.
1779 *) New arguments -certform, -keyform and -pass for s_client and s_server
1780 to allow alternative format key and certificate files and passphrase
1784 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
1785 update associated structures and add various utility functions.
1787 Add new policy related verify parameters, include policy checking in
1788 standard verify code. Enhance 'smime' application with extra parameters
1789 to support policy checking and print out.
1792 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
1793 Nehemiah processors. These extensions support AES encryption in hardware
1794 as well as RNG (though RNG support is currently disabled).
1795 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
1797 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
1800 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
1801 [Andy Polyakov and a number of other people]
1803 *) Improved PowerPC platform support. Most notably BIGNUM assembler
1804 implementation contributed by IBM.
1805 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
1807 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
1808 exponent rather than 'unsigned long'. There is a corresponding change to
1809 the new 'rsa_keygen' element of the RSA_METHOD structure.
1810 [Jelte Jansen, Geoff Thorpe]
1812 *) Functionality for creating the initial serial number file is now
1813 moved from CA.pl to the 'ca' utility with a new option -create_serial.
1815 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
1816 number file to 1, which is bound to cause problems. To avoid
1817 the problems while respecting compatibility between different 0.9.7
1818 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
1819 CA.pl for serial number initialization. With the new release 0.9.8,
1820 we can fix the problem directly in the 'ca' utility.)
1823 *) Reduced header interdepencies by declaring more opaque objects in
1824 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
1825 give fewer recursive includes, which could break lazy source code - so
1826 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
1827 developers should define this symbol when building and using openssl to
1828 ensure they track the recommended behaviour, interfaces, [etc], but
1829 backwards-compatible behaviour prevails when this isn't defined.
1832 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
1835 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
1836 This will generate a random key of the appropriate length based on the
1837 cipher context. The EVP_CIPHER can provide its own random key generation
1838 routine to support keys of a specific form. This is used in the des and
1839 3des routines to generate a key of the correct parity. Update S/MIME
1840 code to use new functions and hence generate correct parity DES keys.
1841 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
1842 valid (weak or incorrect parity).
1845 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
1846 as looking them up. This is useful when the verified structure may contain
1847 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
1848 present unless the new PKCS7_NO_CRL flag is asserted.
1851 *) Extend ASN1 oid configuration module. It now additionally accepts the
1854 shortName = some long name, 1.2.3.4
1857 *) Reimplemented the BN_CTX implementation. There is now no more static
1858 limitation on the number of variables it can handle nor the depth of the
1859 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
1860 information can now expand as required, and rather than having a single
1861 static array of bignums, BN_CTX now uses a linked-list of such arrays
1862 allowing it to expand on demand whilst maintaining the usefulness of
1863 BN_CTX's "bundling".
1866 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
1867 to allow all RSA operations to function using a single BN_CTX.
1870 *) Preliminary support for certificate policy evaluation and checking. This
1871 is initially intended to pass the tests outlined in "Conformance Testing
1872 of Relying Party Client Certificate Path Processing Logic" v1.07.
1875 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
1876 remained unused and not that useful. A variety of other little bignum
1877 tweaks and fixes have also been made continuing on from the audit (see
1881 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
1882 associated ASN1, EVP and SSL functions and old ASN1 macros.
1885 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
1886 and this should never fail. So the return value from the use of
1887 BN_set_word() (which can fail due to needless expansion) is now deprecated;
1888 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
1891 *) BN_CTX_get() should return zero-valued bignums, providing the same
1892 initialised value as BN_new().
1893 [Geoff Thorpe, suggested by Ulf Möller]
1895 *) Support for inhibitAnyPolicy certificate extension.
1898 *) An audit of the BIGNUM code is underway, for which debugging code is
1899 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
1900 is considered valid when processing BIGNUMs, and causes execution to
1901 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
1902 further steps are taken to deliberately pollute unused data in BIGNUM
1903 structures to try and expose faulty code further on. For now, openssl will
1904 (in its default mode of operation) continue to tolerate the inconsistent
1905 forms that it has tolerated in the past, but authors and packagers should
1906 consider trying openssl and their own applications when compiled with
1907 these debugging symbols defined. It will help highlight potential bugs in
1908 their own code, and will improve the test coverage for OpenSSL itself. At
1909 some point, these tighter rules will become openssl's default to improve
1910 maintainability, though the assert()s and other overheads will remain only
1911 in debugging configurations. See bn.h for more details.
1912 [Geoff Thorpe, Nils Larsch, Ulf Möller]
1914 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
1915 that can only be obtained through BN_CTX_new() (which implicitly
1916 initialises it). The presence of this function only made it possible
1917 to overwrite an existing structure (and cause memory leaks).
1920 *) Because of the callback-based approach for implementing LHASH as a
1921 template type, lh_insert() adds opaque objects to hash-tables and
1922 lh_doall() or lh_doall_arg() are typically used with a destructor callback
1923 to clean up those corresponding objects before destroying the hash table
1924 (and losing the object pointers). So some over-zealous constifications in
1925 LHASH have been relaxed so that lh_insert() does not take (nor store) the
1926 objects as "const" and the lh_doall[_arg] callback wrappers are not
1927 prototyped to have "const" restrictions on the object pointers they are
1928 given (and so aren't required to cast them away any more).
1931 *) The tmdiff.h API was so ugly and minimal that our own timing utility
1932 (speed) prefers to use its own implementation. The two implementations
1933 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
1934 its object type properly exposed (MS_TM) instead of casting to/from "char
1935 *". This may still change yet if someone realises MS_TM and "ms_time_***"
1936 aren't necessarily the greatest nomenclatures - but this is what was used
1937 internally to the implementation so I've used that for now.
1940 *) Ensure that deprecated functions do not get compiled when
1941 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
1942 the self-tests were still using deprecated key-generation functions so
1943 these have been updated also.
1946 *) Reorganise PKCS#7 code to separate the digest location functionality
1947 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
1948 New function PKCS7_set_digest() to set the digest type for PKCS#7
1949 digestedData type. Add additional code to correctly generate the
1950 digestedData type and add support for this type in PKCS7 initialization
1954 *) New function PKCS7_set0_type_other() this initializes a PKCS7
1955 structure of type "other".
1958 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
1959 sure the loop does correctly stop and breaking ("division by zero")
1960 modulus operations are not performed. The (pre-generated) prime
1961 table crypto/bn/bn_prime.h was already correct, but it could not be
1962 re-generated on some platforms because of the "division by zero"
1963 situation in the script.
1964 [Ralf S. Engelschall]
1966 *) Update support for ECC-based TLS ciphersuites according to
1967 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
1968 SHA-1 now is only used for "small" curves (where the
1969 representation of a field element takes up to 24 bytes); for
1970 larger curves, the field element resulting from ECDH is directly
1971 used as premaster secret.
1972 [Douglas Stebila (Sun Microsystems Laboratories)]
1974 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
1975 curve secp160r1 to the tests.
1976 [Douglas Stebila (Sun Microsystems Laboratories)]
1978 *) Add the possibility to load symbols globally with DSO.
1979 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
1981 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
1982 control of the error stack.
1985 *) Add support for STORE in ENGINE.
1988 *) Add the STORE type. The intention is to provide a common interface
1989 to certificate and key stores, be they simple file-based stores, or
1990 HSM-type store, or LDAP stores, or...
1991 NOTE: The code is currently UNTESTED and isn't really used anywhere.
1994 *) Add a generic structure called OPENSSL_ITEM. This can be used to
1995 pass a list of arguments to any function as well as provide a way
1996 for a function to pass data back to the caller.
1999 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2000 works like BUF_strdup() but can be used to duplicate a portion of
2001 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2005 *) Add the function sk_find_ex() which works like sk_find(), but will
2006 return an index to an element even if an exact match couldn't be
2007 found. The index is guaranteed to point at the element where the
2008 searched-for key would be inserted to preserve sorting order.
2011 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2012 takes an extra flags argument for optional functionality. Currently,
2013 the following flags are defined:
2015 OBJ_BSEARCH_VALUE_ON_NOMATCH
2016 This one gets OBJ_bsearch_ex() to return a pointer to the first
2017 element where the comparing function returns a negative or zero
2020 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2021 This one gets OBJ_bsearch_ex() to return a pointer to the first
2022 element where the comparing function returns zero. This is useful
2023 if there are more than one element where the comparing function
2027 *) Make it possible to create self-signed certificates with 'openssl ca'
2028 in such a way that the self-signed certificate becomes part of the
2029 CA database and uses the same mechanisms for serial number generation
2030 as all other certificate signing. The new flag '-selfsign' enables
2031 this functionality. Adapt CA.sh and CA.pl.in.
2034 *) Add functionality to check the public key of a certificate request
2035 against a given private. This is useful to check that a certificate
2036 request can be signed by that key (self-signing).
2039 *) Make it possible to have multiple active certificates with the same
2040 subject in the CA index file. This is done only if the keyword
2041 'unique_subject' is set to 'no' in the main CA section (default
2042 if 'CA_default') of the configuration file. The value is saved
2043 with the database itself in a separate index attribute file,
2044 named like the index file with '.attr' appended to the name.
2047 *) Generate muti valued AVAs using '+' notation in config files for
2051 *) Support for nameConstraints certificate extension.
2054 *) Support for policyConstraints certificate extension.
2057 *) Support for policyMappings certificate extension.
2060 *) Make sure the default DSA_METHOD implementation only uses its
2061 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2062 and change its own handlers to be NULL so as to remove unnecessary
2063 indirection. This lets alternative implementations fallback to the
2064 default implementation more easily.
2067 *) Support for directoryName in GeneralName related extensions
2071 *) Make it possible to link applications using Makefile.shared.
2072 Make that possible even when linking against static libraries!
2075 *) Support for single pass processing for S/MIME signing. This now
2076 means that S/MIME signing can be done from a pipe, in addition
2077 cleartext signing (multipart/signed type) is effectively streaming
2078 and the signed data does not need to be all held in memory.
2080 This is done with a new flag PKCS7_STREAM. When this flag is set
2081 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2082 is done after the data is output (and digests calculated) in
2083 SMIME_write_PKCS7().
2086 *) Add full support for -rpath/-R, both in shared libraries and
2087 applications, at least on the platforms where it's known how
2091 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2092 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2093 will now compute a table of multiples of the generator that
2094 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2095 faster (notably in the case of a single point multiplication,
2096 scalar * generator).
2097 [Nils Larsch, Bodo Moeller]
2099 *) IPv6 support for certificate extensions. The various extensions
2100 which use the IP:a.b.c.d can now take IPv6 addresses using the
2101 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2105 *) Added an ENGINE that implements RSA by performing private key
2106 exponentiations with the GMP library. The conversions to and from
2107 GMP's mpz_t format aren't optimised nor are any montgomery forms
2108 cached, and on x86 it appears OpenSSL's own performance has caught up.
2109 However there are likely to be other architectures where GMP could
2110 provide a boost. This ENGINE is not built in by default, but it can be
2111 specified at Configure time and should be accompanied by the necessary
2112 linker additions, eg;
2113 ./config -DOPENSSL_USE_GMP -lgmp
2116 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2117 testing availability of engines with "-t" - the old behaviour is
2118 produced by increasing the feature's verbosity with "-tt".
2121 *) ECDSA routines: under certain error conditions uninitialized BN objects
2122 could be freed. Solution: make sure initialization is performed early
2123 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2127 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2128 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2129 software implementations. For DSA and DH, parameter generation can
2130 also be overriden by providing the appropriate method callbacks.
2133 *) Change the "progress" mechanism used in key-generation and
2134 primality testing to functions that take a new BN_GENCB pointer in
2135 place of callback/argument pairs. The new API functions have "_ex"
2136 postfixes and the older functions are reimplemented as wrappers for
2137 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2138 declarations of the old functions to help (graceful) attempts to
2139 migrate to the new functions. Also, the new key-generation API
2140 functions operate on a caller-supplied key-structure and return
2141 success/failure rather than returning a key or NULL - this is to
2142 help make "keygen" another member function of RSA_METHOD etc.
2144 Example for using the new callback interface:
2146 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2150 BN_GENCB_set(&my_cb, my_callback, my_arg);
2152 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2153 /* For the meaning of a, b in calls to my_callback(), see the
2154 * documentation of the function that calls the callback.
2155 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2156 * my_callback should return 1 if it wants BN_is_prime_ex()
2157 * to continue, or 0 to stop.
2162 *) Change the ZLIB compression method to be stateful, and make it
2163 available to TLS with the number defined in
2164 draft-ietf-tls-compression-04.txt.
2167 *) Add the ASN.1 structures and functions for CertificatePair, which
2168 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2170 CertificatePair ::= SEQUENCE {
2171 forward [0] Certificate OPTIONAL,
2172 reverse [1] Certificate OPTIONAL,
2173 -- at least one of the pair shall be present -- }
2175 Also implement the PEM functions to read and write certificate
2176 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2178 This needed to be defined, mostly for the sake of the LDAP
2179 attribute crossCertificatePair, but may prove useful elsewhere as
2183 *) Make it possible to inhibit symlinking of shared libraries in
2184 Makefile.shared, for Cygwin's sake.
2187 *) Extend the BIGNUM API by creating a function
2188 void BN_set_negative(BIGNUM *a, int neg);
2189 and a macro that behave like
2190 int BN_is_negative(const BIGNUM *a);
2192 to avoid the need to access 'a->neg' directly in applications.
2195 *) Implement fast modular reduction for pseudo-Mersenne primes
2196 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2197 EC_GROUP_new_curve_GFp() will now automatically use this
2199 [Nils Larsch <nla@trustcenter.de>]
2201 *) Add new lock type (CRYPTO_LOCK_BN).
2204 *) Change the ENGINE framework to automatically load engines
2205 dynamically from specific directories unless they could be
2206 found to already be built in or loaded. Move all the
2207 current engines except for the cryptodev one to a new
2209 The engines in engines/ are built as shared libraries if
2210 the "shared" options was given to ./Configure or ./config.
2211 Otherwise, they are inserted in libcrypto.a.
2212 /usr/local/ssl/engines is the default directory for dynamic
2213 engines, but that can be overriden at configure time through
2214 the usual use of --prefix and/or --openssldir, and at run
2215 time with the environment variable OPENSSL_ENGINES.
2216 [Geoff Thorpe and Richard Levitte]
2218 *) Add Makefile.shared, a helper makefile to build shared
2219 libraries. Addapt Makefile.org.
2222 *) Add version info to Win32 DLLs.
2223 [Peter 'Luna' Runestig" <peter@runestig.com>]
2225 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2226 can be added using this API to created arbitrary PKCS#12
2227 files while avoiding the low level API.
2229 New options to PKCS12_create(), key or cert can be NULL and
2230 will then be omitted from the output file. The encryption
2231 algorithm NIDs can be set to -1 for no encryption, the mac
2232 iteration count can be set to 0 to omit the mac.
2234 Enhance pkcs12 utility by making the -nokeys and -nocerts
2235 options work when creating a PKCS#12 file. New option -nomac
2236 to omit the mac, NONE can be set for an encryption algorithm.
2237 New code is modified to use the enhanced PKCS12_create()
2238 instead of the low level API.
2241 *) Extend ASN1 encoder to support indefinite length constructed
2242 encoding. This can output sequences tags and octet strings in
2243 this form. Modify pk7_asn1.c to support indefinite length
2244 encoding. This is experimental and needs additional code to
2245 be useful, such as an ASN1 bio and some enhanced streaming
2248 Extend template encode functionality so that tagging is passed
2249 down to the template encoder.
2252 *) Let 'openssl req' fail if an argument to '-newkey' is not
2253 recognized instead of using RSA as a default.
2256 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2257 As these are not official, they are not included in "ALL";
2258 the "ECCdraft" ciphersuite group alias can be used to select them.
2259 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2261 *) Add ECDH engine support.
2262 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2264 *) Add ECDH in new directory crypto/ecdh/.
2265 [Douglas Stebila (Sun Microsystems Laboratories)]
2267 *) Let BN_rand_range() abort with an error after 100 iterations
2268 without success (which indicates a broken PRNG).
2271 *) Change BN_mod_sqrt() so that it verifies that the input value
2272 is really the square of the return value. (Previously,
2273 BN_mod_sqrt would show GIGO behaviour.)
2276 *) Add named elliptic curves over binary fields from X9.62, SECG,
2277 and WAP/WTLS; add OIDs that were still missing.
2279 [Sheueling Chang Shantz and Douglas Stebila
2280 (Sun Microsystems Laboratories)]
2282 *) Extend the EC library for elliptic curves over binary fields
2283 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2286 EC_GF2m_simple_method
2290 EC_GROUP_new_curve_GF2m
2291 EC_GROUP_set_curve_GF2m
2292 EC_GROUP_get_curve_GF2m
2293 EC_POINT_set_affine_coordinates_GF2m
2294 EC_POINT_get_affine_coordinates_GF2m
2295 EC_POINT_set_compressed_coordinates_GF2m
2297 Point compression for binary fields is disabled by default for
2298 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2301 As binary polynomials are represented as BIGNUMs, various members
2302 of the EC_GROUP and EC_POINT data structures can be shared
2303 between the implementations for prime fields and binary fields;
2304 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2305 are essentially identical to their ..._GFp counterparts.
2306 (For simplicity, the '..._GFp' prefix has been dropped from
2307 various internal method names.)
2309 An internal 'field_div' method (similar to 'field_mul' and
2310 'field_sqr') has been added; this is used only for binary fields.
2312 [Sheueling Chang Shantz and Douglas Stebila
2313 (Sun Microsystems Laboratories)]
2315 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2316 through methods ('mul', 'precompute_mult').
2318 The generic implementations (now internally called 'ec_wNAF_mul'
2319 and 'ec_wNAF_precomputed_mult') remain the default if these
2320 methods are undefined.
2322 [Sheueling Chang Shantz and Douglas Stebila
2323 (Sun Microsystems Laboratories)]
2325 *) New function EC_GROUP_get_degree, which is defined through
2326 EC_METHOD. For curves over prime fields, this returns the bit
2327 length of the modulus.
2329 [Sheueling Chang Shantz and Douglas Stebila
2330 (Sun Microsystems Laboratories)]
2332 *) New functions EC_GROUP_dup, EC_POINT_dup.
2333 (These simply call ..._new and ..._copy).
2335 [Sheueling Chang Shantz and Douglas Stebila
2336 (Sun Microsystems Laboratories)]
2338 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2339 Polynomials are represented as BIGNUMs (where the sign bit is not
2340 used) in the following functions [macros]:
2343 BN_GF2m_sub [= BN_GF2m_add]
2344 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2345 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2346 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2348 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2349 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2350 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2351 BN_GF2m_cmp [= BN_ucmp]
2353 (Note that only the 'mod' functions are actually for fields GF(2^m).
2354 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2356 For some functions, an the irreducible polynomial defining a
2357 field can be given as an 'unsigned int[]' with strictly
2358 decreasing elements giving the indices of those bits that are set;
2359 i.e., p[] represents the polynomial
2360 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2362 p[0] > p[1] > ... > p[k] = 0.
2363 This applies to the following functions:
2368 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2369 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2371 BN_GF2m_mod_sqrt_arr
2372 BN_GF2m_mod_solve_quad_arr
2376 Conversion can be performed by the following functions:
2381 bntest.c has additional tests for binary polynomial arithmetic.
2383 Two implementations for BN_GF2m_mod_div() are available.
2384 The default algorithm simply uses BN_GF2m_mod_inv() and
2385 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2386 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2387 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2389 [Sheueling Chang Shantz and Douglas Stebila
2390 (Sun Microsystems Laboratories)]
2392 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2393 functionality is disabled at compile-time.
2394 [Douglas Stebila <douglas.stebila@sun.com>]
2396 *) Change default behaviour of 'openssl asn1parse' so that more
2397 information is visible when viewing, e.g., a certificate:
2399 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2400 mode the content of non-printable OCTET STRINGs is output in a
2401 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2402 avoid the appearance of a printable string.
2403 [Nils Larsch <nla@trustcenter.de>]
2405 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2407 EC_GROUP_set_asn1_flag()
2408 EC_GROUP_get_asn1_flag()
2409 EC_GROUP_set_point_conversion_form()
2410 EC_GROUP_get_point_conversion_form()
2411 These control ASN1 encoding details:
2412 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2413 has been set to OPENSSL_EC_NAMED_CURVE.
2414 - Points are encoded in uncompressed form by default; options for
2415 asn1_for are as for point2oct, namely
2416 POINT_CONVERSION_COMPRESSED
2417 POINT_CONVERSION_UNCOMPRESSED
2418 POINT_CONVERSION_HYBRID
2420 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2423 EC_GROUP_get0_seed()
2424 EC_GROUP_get_seed_len()
2425 This is used only for ASN1 purposes (so far).
2426 [Nils Larsch <nla@trustcenter.de>]
2428 *) Add 'field_type' member to EC_METHOD, which holds the NID
2429 of the appropriate field type OID. The new function
2430 EC_METHOD_get_field_type() returns this value.
2431 [Nils Larsch <nla@trustcenter.de>]
2436 EC_POINT_point2hex()
2437 EC_POINT_hex2point()
2438 providing useful interfaces to EC_POINT_point2oct() and
2439 EC_POINT_oct2point().
2440 [Nils Larsch <nla@trustcenter.de>]
2442 *) Change internals of the EC library so that the functions
2443 EC_GROUP_set_generator()
2444 EC_GROUP_get_generator()
2445 EC_GROUP_get_order()
2446 EC_GROUP_get_cofactor()
2447 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2448 to methods, which would lead to unnecessary code duplication when
2449 adding different types of curves.
2450 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2452 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2453 arithmetic, and such that modified wNAFs are generated
2454 (which avoid length expansion in many cases).
2457 *) Add a function EC_GROUP_check_discriminant() (defined via
2458 EC_METHOD) that verifies that the curve discriminant is non-zero.
2460 Add a function EC_GROUP_check() that makes some sanity tests
2461 on a EC_GROUP, its generator and order. This includes
2462 EC_GROUP_check_discriminant().
2463 [Nils Larsch <nla@trustcenter.de>]
2465 *) Add ECDSA in new directory crypto/ecdsa/.
2467 Add applications 'openssl ecparam' and 'openssl ecdsa'
2468 (these are based on 'openssl dsaparam' and 'openssl dsa').
2470 ECDSA support is also included in various other files across the
2471 library. Most notably,
2472 - 'openssl req' now has a '-newkey ecdsa:file' option;
2473 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2474 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2475 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2476 them suitable for ECDSA where domain parameters must be
2477 extracted before the specific public key;
2478 - ECDSA engine support has been added.
2479 [Nils Larsch <nla@trustcenter.de>]
2481 *) Include some named elliptic curves, and add OIDs from X9.62,
2482 SECG, and WAP/WTLS. Each curve can be obtained from the new
2484 EC_GROUP_new_by_curve_name(),
2485 and the list of available named curves can be obtained with
2486 EC_get_builtin_curves().
2487 Also add a 'curve_name' member to EC_GROUP objects, which can be
2489 EC_GROUP_set_curve_name()
2490 EC_GROUP_get_curve_name()
2491 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2493 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2494 was actually never needed) and in BN_mul(). The removal in BN_mul()
2495 required a small change in bn_mul_part_recursive() and the addition
2496 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2497 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2498 bn_sub_words() and bn_add_words() except they take arrays with
2502 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2504 *) Cleanse PEM buffers before freeing them since they may contain
2506 [Benjamin Bennett <ben@psc.edu>]
2508 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2509 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2510 authentication-only ciphersuites.
2513 *) Since AES128 and AES256 share a single mask bit in the logic of
2514 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2515 kludge to work properly if AES128 is available and AES256 isn't.
2518 *) Expand security boundary to match 1.1.1 module.
2521 *) Remove redundant features: hash file source, editing of test vectors
2522 modify fipsld to use external fips_premain.c signature.
2525 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2526 run algorithm test programs.
2529 *) Make algorithm test programs more tolerant of whitespace.
2532 *) Have SSL/TLS server implementation tolerate "mismatched" record
2533 protocol version while receiving ClientHello even if the
2534 ClientHello is fragmented. (The server can't insist on the
2535 particular protocol version it has chosen before the ServerHello
2536 message has informed the client about his choice.)
2539 *) Load error codes if they are not already present instead of using a
2540 static variable. This allows them to be cleanly unloaded and reloaded.
2543 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2545 *) Introduce limits to prevent malicious keys being able to
2546 cause a denial of service. (CVE-2006-2940)
2547 [Steve Henson, Bodo Moeller]
2549 *) Fix ASN.1 parsing of certain invalid structures that can result
2550 in a denial of service. (CVE-2006-2937) [Steve Henson]
2552 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2553 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2555 *) Fix SSL client code which could crash if connecting to a
2556 malicious SSLv2 server. (CVE-2006-4343)
2557 [Tavis Ormandy and Will Drewry, Google Security Team]
2559 *) Change ciphersuite string processing so that an explicit
2560 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
2561 will no longer include "AES128-SHA"), and any other similar
2562 ciphersuite (same bitmap) from *other* protocol versions (so that
2563 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
2564 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
2565 changes from 0.9.8b and 0.9.8d.
2568 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
2570 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2571 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2573 *) Change the Unix randomness entropy gathering to use poll() when
2574 possible instead of select(), since the latter has some
2575 undesirable limitations.
2576 [Darryl Miles via Richard Levitte and Bodo Moeller]
2578 *) Disable rogue ciphersuites:
2580 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2581 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2582 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2584 The latter two were purportedly from
2585 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2588 Also deactive the remaining ciphersuites from
2589 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2590 unofficial, and the ID has long expired.
2593 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2594 dual-core machines) and other potential thread-safety issues.
2597 Changes between 0.9.7i and 0.9.7j [04 May 2006]
2599 *) Adapt fipsld and the build system to link against the validated FIPS
2600 module in FIPS mode.
2603 *) Fixes for VC++ 2005 build under Windows.
2606 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
2607 from a Windows bash shell such as MSYS. It is autodetected from the
2608 "config" script when run from a VC++ environment. Modify standard VC++
2609 build to use fipscanister.o from the GNU make build.
2612 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
2614 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
2615 The value now differs depending on if you build for FIPS or not.
2616 BEWARE! A program linked with a shared FIPSed libcrypto can't be
2617 safely run with a non-FIPSed libcrypto, as it may crash because of
2618 the difference induced by this change.
2621 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
2623 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2624 (part of SSL_OP_ALL). This option used to disable the
2625 countermeasure against man-in-the-middle protocol-version
2626 rollback in the SSL 2.0 server implementation, which is a bad
2627 idea. (CVE-2005-2969)
2629 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2630 for Information Security, National Institute of Advanced Industrial
2631 Science and Technology [AIST], Japan)]
2633 *) Minimal support for X9.31 signatures and PSS padding modes. This is
2634 mainly for FIPS compliance and not fully integrated at this stage.
2637 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
2638 the exponentiation using a fixed-length exponent. (Otherwise,
2639 the information leaked through timing could expose the secret key
2640 after many signatures; cf. Bleichenbacher's attack on DSA with
2644 *) Make a new fixed-window mod_exp implementation the default for
2645 RSA, DSA, and DH private-key operations so that the sequence of
2646 squares and multiplies and the memory access pattern are
2647 independent of the particular secret key. This will mitigate
2648 cache-timing and potential related attacks.
2650 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
2651 and this is automatically used by BN_mod_exp_mont() if the new flag
2652 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
2653 will use this BN flag for private exponents unless the flag
2654 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
2655 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
2657 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
2659 *) Change the client implementation for SSLv23_method() and
2660 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
2661 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
2662 (Previously, the SSL 2.0 backwards compatible Client Hello
2663 message format would be used even with SSL_OP_NO_SSLv2.)
2666 *) Add support for smime-type MIME parameter in S/MIME messages which some
2670 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
2671 a threadsafe manner. Modify rsa code to use new function and add calls
2672 to dsa and dh code (which had race conditions before).
2675 *) Include the fixed error library code in the C error file definitions
2676 instead of fixing them up at runtime. This keeps the error code
2677 structures constant.
2680 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
2682 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
2685 *) Fixes for newer kerberos headers. NB: the casts are needed because
2686 the 'length' field is signed on one version and unsigned on another
2687 with no (?) obvious way to tell the difference, without these VC++
2688 complains. Also the "definition" of FAR (blank) is no longer included
2689 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
2690 some needed definitions.
2693 *) Undo Cygwin change.
2696 *) Added support for proxy certificates according to RFC 3820.
2697 Because they may be a security thread to unaware applications,
2698 they must be explicitely allowed in run-time. See
2699 docs/HOWTO/proxy_certificates.txt for further information.
2702 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
2704 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
2705 server and client random values. Previously
2706 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
2707 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
2709 This change has negligible security impact because:
2711 1. Server and client random values still have 24 bytes of pseudo random
2714 2. Server and client random values are sent in the clear in the initial
2717 3. The master secret is derived using the premaster secret (48 bytes in
2718 size for static RSA ciphersuites) as well as client server and random
2721 The OpenSSL team would like to thank the UK NISCC for bringing this issue
2724 [Stephen Henson, reported by UK NISCC]
2726 *) Use Windows randomness collection on Cygwin.
2729 *) Fix hang in EGD/PRNGD query when communication socket is closed
2730 prematurely by EGD/PRNGD.
2731 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
2733 *) Prompt for pass phrases when appropriate for PKCS12 input format.
2736 *) Back-port of selected performance improvements from development
2737 branch, as well as improved support for PowerPC platforms.
2740 *) Add lots of checks for memory allocation failure, error codes to indicate
2741 failure and freeing up memory if a failure occurs.
2742 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
2744 *) Add new -passin argument to dgst.
2747 *) Perform some character comparisons of different types in X509_NAME_cmp:
2748 this is needed for some certificates that reencode DNs into UTF8Strings
2749 (in violation of RFC3280) and can't or wont issue name rollover
2753 *) Make an explicit check during certificate validation to see that
2754 the CA setting in each certificate on the chain is correct. As a
2755 side effect always do the following basic checks on extensions,
2756 not just when there's an associated purpose to the check:
2758 - if there is an unhandled critical extension (unless the user
2759 has chosen to ignore this fault)
2760 - if the path length has been exceeded (if one is set at all)
2761 - that certain extensions fit the associated purpose (if one has
2765 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
2767 *) Avoid a race condition when CRLs are checked in a multi threaded
2768 environment. This would happen due to the reordering of the revoked
2769 entries during signature checking and serial number lookup. Now the
2770 encoding is cached and the serial number sort performed under a lock.
2771 Add new STACK function sk_is_sorted().
2774 *) Add Delta CRL to the extension code.
2777 *) Various fixes to s3_pkt.c so alerts are sent properly.
2778 [David Holmes <d.holmes@f5.com>]
2780 *) Reduce the chances of duplicate issuer name and serial numbers (in
2781 violation of RFC3280) using the OpenSSL certificate creation utilities.
2782 This is done by creating a random 64 bit value for the initial serial
2783 number when a serial number file is created or when a self signed
2784 certificate is created using 'openssl req -x509'. The initial serial
2785 number file is created using 'openssl x509 -next_serial' in CA.pl
2786 rather than being initialized to 1.
2789 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
2791 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
2792 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
2793 [Joe Orton, Steve Henson]
2795 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
2797 [Joe Orton, Steve Henson]
2799 *) Make it possible to have multiple active certificates with the same
2800 subject in the CA index file. This is done only if the keyword
2801 'unique_subject' is set to 'no' in the main CA section (default
2802 if 'CA_default') of the configuration file. The value is saved
2803 with the database itself in a separate index attribute file,
2804 named like the index file with '.attr' appended to the name.
2807 *) X509 verify fixes. Disable broken certificate workarounds when
2808 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
2809 keyUsage extension present. Don't accept CRLs with unhandled critical
2810 extensions: since verify currently doesn't process CRL extensions this
2811 rejects a CRL with *any* critical extensions. Add new verify error codes
2815 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
2816 A clarification of RFC2560 will require the use of OCTET STRINGs and
2817 some implementations cannot handle the current raw format. Since OpenSSL
2818 copies and compares OCSP nonces as opaque blobs without any attempt at
2819 parsing them this should not create any compatibility issues.
2822 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
2823 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
2824 this HMAC (and other) operations are several times slower than OpenSSL
2828 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
2829 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
2831 *) Use the correct content when signing type "other".
2834 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
2836 *) Fix various bugs revealed by running the NISCC test suite:
2838 Stop out of bounds reads in the ASN1 code when presented with
2839 invalid tags (CVE-2003-0543 and CVE-2003-0544).
2841 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
2843 If verify callback ignores invalid public key errors don't try to check
2844 certificate signature with the NULL public key.
2848 *) New -ignore_err option in ocsp application to stop the server
2849 exiting on the first error in a request.
2852 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
2853 if the server requested one: as stated in TLS 1.0 and SSL 3.0
2857 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
2858 extra data after the compression methods not only for TLS 1.0
2859 but also for SSL 3.0 (as required by the specification).
2860 [Bodo Moeller; problem pointed out by Matthias Loepfe]
2862 *) Change X509_certificate_type() to mark the key as exported/exportable
2863 when it's 512 *bits* long, not 512 bytes.
2866 *) Change AES_cbc_encrypt() so it outputs exact multiple of
2867 blocks during encryption.
2870 *) Various fixes to base64 BIO and non blocking I/O. On write
2871 flushes were not handled properly if the BIO retried. On read
2872 data was not being buffered properly and had various logic bugs.
2873 This also affects blocking I/O when the data being decoded is a
2877 *) Various S/MIME bugfixes and compatibility changes:
2878 output correct application/pkcs7 MIME type if
2879 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
2880 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
2881 of files as .eml work). Correctly handle very long lines in MIME
2885 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
2887 *) Countermeasure against the Klima-Pokorny-Rosa extension of
2888 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
2889 a protocol version number mismatch like a decryption error
2890 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
2893 *) Turn on RSA blinding by default in the default implementation
2894 to avoid a timing attack. Applications that don't want it can call
2895 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
2896 They would be ill-advised to do so in most cases.
2897 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
2899 *) Change RSA blinding code so that it works when the PRNG is not
2900 seeded (in this case, the secret RSA exponent is abused as
2901 an unpredictable seed -- if it is not unpredictable, there
2902 is no point in blinding anyway). Make RSA blinding thread-safe
2903 by remembering the creator's thread ID in rsa->blinding and
2904 having all other threads use local one-time blinding factors
2905 (this requires more computation than sharing rsa->blinding, but
2906 avoids excessive locking; and if an RSA object is not shared
2907 between threads, blinding will still be very fast).
2910 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
2911 ENGINE as defaults for all supported algorithms irrespective of
2912 the 'flags' parameter. 'flags' is now honoured, so applications
2913 should make sure they are passing it correctly.
2916 *) Target "mingw" now allows native Windows code to be generated in
2917 the Cygwin environment as well as with the MinGW compiler.
2920 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
2922 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
2923 via timing by performing a MAC computation even if incorrrect
2924 block cipher padding has been found. This is a countermeasure
2925 against active attacks where the attacker has to distinguish
2926 between bad padding and a MAC verification error. (CVE-2003-0078)
2928 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
2929 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
2930 Martin Vuagnoux (EPFL, Ilion)]
2932 *) Make the no-err option work as intended. The intention with no-err
2933 is not to have the whole error stack handling routines removed from
2934 libcrypto, it's only intended to remove all the function name and
2935 reason texts, thereby removing some of the footprint that may not
2936 be interesting if those errors aren't displayed anyway.
2938 NOTE: it's still possible for any application or module to have it's
2939 own set of error texts inserted. The routines are there, just not
2940 used by default when no-err is given.
2943 *) Add support for FreeBSD on IA64.
2944 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
2946 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
2947 Kerberos function mit_des_cbc_cksum(). Before this change,
2948 the value returned by DES_cbc_cksum() was like the one from
2949 mit_des_cbc_cksum(), except the bytes were swapped.
2950 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
2952 *) Allow an application to disable the automatic SSL chain building.
2953 Before this a rather primitive chain build was always performed in
2954 ssl3_output_cert_chain(): an application had no way to send the
2955 correct chain if the automatic operation produced an incorrect result.
2957 Now the chain builder is disabled if either:
2959 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
2961 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
2963 The reasoning behind this is that an application would not want the
2964 auto chain building to take place if extra chain certificates are
2965 present and it might also want a means of sending no additional
2966 certificates (for example the chain has two certificates and the
2970 *) Add the possibility to build without the ENGINE framework.
2971 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
2973 *) Under Win32 gmtime() can return NULL: check return value in
2974 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
2977 *) DSA routines: under certain error conditions uninitialized BN objects
2978 could be freed. Solution: make sure initialization is performed early
2979 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
2980 Nils Larsch <nla@trustcenter.de> via PR#459)
2983 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
2984 checked on reconnect on the client side, therefore session resumption
2985 could still fail with a "ssl session id is different" error. This
2986 behaviour is masked when SSL_OP_ALL is used due to
2987 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
2988 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
2989 followup to PR #377.
2992 *) IA-32 assembler support enhancements: unified ELF targets, support
2993 for SCO/Caldera platforms, fix for Cygwin shared build.
2996 *) Add support for FreeBSD on sparc64. As a consequence, support for
2997 FreeBSD on non-x86 processors is separate from x86 processors on
2998 the config script, much like the NetBSD support.
2999 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3001 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3003 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3006 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3007 code (06) was taken as the first octet of the session ID and the last
3008 octet was ignored consequently. As a result SSLv2 client side session
3009 caching could not have worked due to the session ID mismatch between
3011 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3015 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3016 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3020 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3021 seems that in spite of existing for more than a year, many application
3022 author have done nothing to provide the necessary callbacks, which
3023 means that this particular engine will not work properly anywhere.
3024 This is a very unfortunate situation which forces us, in the name
3025 of usability, to give the hw_ncipher.c a static lock, which is part
3027 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3028 appear in 0.9.8 or later. We EXPECT application authors to have
3029 dealt properly with this when 0.9.8 is released (unless we actually
3030 make such changes in the libcrypto locking code that changes will
3031 have to be made anyway).
3034 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3035 octets have been read, EOF or an error occurs. Without this change
3036 some truncated ASN1 structures will not produce an error.
3039 *) Disable Heimdal support, since it hasn't been fully implemented.
3040 Still give the possibility to force the use of Heimdal, but with
3041 warnings and a request that patches get sent to openssl-dev.
3044 *) Add the VC-CE target, introduce the WINCE sysname, and add
3045 INSTALL.WCE and appropriate conditionals to make it build.
3046 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3048 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3049 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3050 edit numbers of the version.
3051 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3053 *) Introduce safe string copy and catenation functions
3054 (BUF_strlcpy() and BUF_strlcat()).
3055 [Ben Laurie (CHATS) and Richard Levitte]
3057 *) Avoid using fixed-size buffers for one-line DNs.
3058 [Ben Laurie (CHATS)]
3060 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3061 resizing buffers containing secrets, and use where appropriate.
3062 [Ben Laurie (CHATS)]
3064 *) Avoid using fixed size buffers for configuration file location.
3065 [Ben Laurie (CHATS)]
3067 *) Avoid filename truncation for various CA files.
3068 [Ben Laurie (CHATS)]
3070 *) Use sizeof in preference to magic numbers.
3071 [Ben Laurie (CHATS)]
3073 *) Avoid filename truncation in cert requests.
3074 [Ben Laurie (CHATS)]
3076 *) Add assertions to check for (supposedly impossible) buffer
3078 [Ben Laurie (CHATS)]
3080 *) Don't cache truncated DNS entries in the local cache (this could
3081 potentially lead to a spoofing attack).
3082 [Ben Laurie (CHATS)]
3084 *) Fix various buffers to be large enough for hex/decimal
3085 representations in a platform independent manner.
3086 [Ben Laurie (CHATS)]
3088 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3089 resizing buffers containing secrets, and use where appropriate.
3090 [Ben Laurie (CHATS)]
3092 *) Add BIO_indent() to avoid much slightly worrying code to do
3094 [Ben Laurie (CHATS)]
3096 *) Convert sprintf()/BIO_puts() to BIO_printf().
3097 [Ben Laurie (CHATS)]
3099 *) buffer_gets() could terminate with the buffer only half
3101 [Ben Laurie (CHATS)]
3103 *) Add assertions to prevent user-supplied crypto functions from
3104 overflowing internal buffers by having large block sizes, etc.
3105 [Ben Laurie (CHATS)]
3107 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3109 [Ben Laurie (CHATS)]
3111 *) Eliminate unused copy of key in RC4.
3112 [Ben Laurie (CHATS)]
3114 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3115 [Ben Laurie (CHATS)]
3117 *) Fix off-by-one error in EGD path.
3118 [Ben Laurie (CHATS)]
3120 *) If RANDFILE path is too long, ignore instead of truncating.
3121 [Ben Laurie (CHATS)]
3123 *) Eliminate unused and incorrectly sized X.509 structure
3125 [Ben Laurie (CHATS)]
3127 *) Eliminate unused and dangerous function knumber().
3128 [Ben Laurie (CHATS)]
3130 *) Eliminate unused and dangerous structure, KSSL_ERR.
3131 [Ben Laurie (CHATS)]
3133 *) Protect against overlong session ID context length in an encoded
3134 session object. Since these are local, this does not appear to be
3136 [Ben Laurie (CHATS)]
3138 *) Change from security patch (see 0.9.6e below) that did not affect
3139 the 0.9.6 release series:
3141 Remote buffer overflow in SSL3 protocol - an attacker could
3142 supply an oversized master key in Kerberos-enabled versions.
3144 [Ben Laurie (CHATS)]
3146 *) Change the SSL kerb5 codes to match RFC 2712.
3149 *) Make -nameopt work fully for req and add -reqopt switch.
3150 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3152 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3153 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3155 *) Make sure tests can be performed even if the corresponding algorithms
3156 have been removed entirely. This was also the last step to make
3157 OpenSSL compilable with DJGPP under all reasonable conditions.
3158 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3160 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3161 to allow version independent disabling of normally unselected ciphers,
3162 which may be activated as a side-effect of selecting a single cipher.
3164 (E.g., cipher list string "RSA" enables ciphersuites that are left
3165 out of "ALL" because they do not provide symmetric encryption.
3166 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3167 [Lutz Jaenicke, Bodo Moeller]
3169 *) Add appropriate support for separate platform-dependent build
3170 directories. The recommended way to make a platform-dependent
3171 build directory is the following (tested on Linux), maybe with
3174 # Place yourself outside of the OpenSSL source tree. In
3175 # this example, the environment variable OPENSSL_SOURCE
3176 # is assumed to contain the absolute OpenSSL source directory.
3177 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3178 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3179 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3180 mkdir -p `dirname $F`
3181 ln -s $OPENSSL_SOURCE/$F $F
3184 To be absolutely sure not to disturb the source tree, a "make clean"
3185 is a good thing. If it isn't successfull, don't worry about it,
3186 it probably means the source directory is very clean.
3189 *) Make sure any ENGINE control commands make local copies of string
3190 pointers passed to them whenever necessary. Otherwise it is possible
3191 the caller may have overwritten (or deallocated) the original string
3192 data when a later ENGINE operation tries to use the stored values.
3193 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3195 *) Improve diagnostics in file reading and command-line digests.
3196 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3198 *) Add AES modes CFB and OFB to the object database. Correct an
3199 error in AES-CFB decryption.
3202 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3203 allows existing EVP_CIPHER_CTX structures to be reused after
3204 calling EVP_*Final(). This behaviour is used by encryption
3205 BIOs and some applications. This has the side effect that
3206 applications must explicitly clean up cipher contexts with
3207 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3210 *) Check the values of dna and dnb in bn_mul_recursive before calling
3211 bn_mul_comba (a non zero value means the a or b arrays do not contain
3212 n2 elements) and fallback to bn_mul_normal if either is not zero.
3215 *) Fix escaping of non-ASCII characters when using the -subj option
3216 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3219 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3220 form for "surname", serialNumber has no short form.
3221 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3222 therefore remove "mail" short name for "internet 7".
3223 The OID for unique identifiers in X509 certificates is
3224 x500UniqueIdentifier, not uniqueIdentifier.
3225 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3228 *) Add an "init" command to the ENGINE config module and auto initialize
3229 ENGINEs. Without any "init" command the ENGINE will be initialized
3230 after all ctrl commands have been executed on it. If init=1 the
3231 ENGINE is initailized at that point (ctrls before that point are run
3232 on the uninitialized ENGINE and after on the initialized one). If
3233 init=0 then the ENGINE will not be iniatialized at all.
3236 *) Fix the 'app_verify_callback' interface so that the user-defined
3237 argument is actually passed to the callback: In the
3238 SSL_CTX_set_cert_verify_callback() prototype, the callback
3239 declaration has been changed from
3242 int (*cb)(X509_STORE_CTX *,void *);
3243 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3244 i=s->ctx->app_verify_callback(&ctx)
3245 has been changed into
3246 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3248 To update applications using SSL_CTX_set_cert_verify_callback(),
3249 a dummy argument can be added to their callback functions.
3250 [D. K. Smetters <smetters@parc.xerox.com>]
3252 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3253 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3255 *) Add and OPENSSL_LOAD_CONF define which will cause
3256 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3257 This allows older applications to transparently support certain
3258 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3259 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3260 load the config file and OPENSSL_add_all_algorithms_conf() which will
3261 always load it have also been added.
3264 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
3265 Adjust NIDs and EVP layer.
3266 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3268 *) Config modules support in openssl utility.
3270 Most commands now load modules from the config file,
3271 though in a few (such as version) this isn't done
3272 because it couldn't be used for anything.
3274 In the case of ca and req the config file used is
3275 the same as the utility itself: that is the -config
3276 command line option can be used to specify an
3280 *) Move default behaviour from OPENSSL_config(). If appname is NULL
3281 use "openssl_conf" if filename is NULL use default openssl config file.
3284 *) Add an argument to OPENSSL_config() to allow the use of an alternative
3285 config section name. Add a new flag to tolerate a missing config file
3286 and move code to CONF_modules_load_file().
3289 *) Support for crypto accelerator cards from Accelerated Encryption
3290 Processing, www.aep.ie. (Use engine 'aep')
3291 The support was copied from 0.9.6c [engine] and adapted/corrected
3292 to work with the new engine framework.
3293 [AEP Inc. and Richard Levitte]
3295 *) Support for SureWare crypto accelerator cards from Baltimore
3296 Technologies. (Use engine 'sureware')
3297 The support was copied from 0.9.6c [engine] and adapted
3298 to work with the new engine framework.
3301 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
3302 make the newer ENGINE framework commands for the CHIL engine work.
3303 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
3305 *) Make it possible to produce shared libraries on ReliantUNIX.
3306 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
3308 *) Add the configuration target debug-linux-ppro.
3309 Make 'openssl rsa' use the general key loading routines
3310 implemented in apps.c, and make those routines able to
3311 handle the key format FORMAT_NETSCAPE and the variant
3313 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3315 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3316 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3318 *) Add -keyform to rsautl, and document -engine.
3319 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3321 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3322 BIO_R_NO_SUCH_FILE error code rather than the generic
3323 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3326 *) Add new functions
3328 ERR_peek_last_error_line
3329 ERR_peek_last_error_line_data.
3330 These are similar to
3333 ERR_peek_error_line_data,
3334 but report on the latest error recorded rather than the first one
3335 still in the error queue.
3336 [Ben Laurie, Bodo Moeller]
3338 *) default_algorithms option in ENGINE config module. This allows things
3340 default_algorithms = ALL
3341 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3344 *) Prelminary ENGINE config module.
3347 *) New experimental application configuration code.
3350 *) Change the AES code to follow the same name structure as all other
3351 symmetric ciphers, and behave the same way. Move everything to
3352 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3353 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3355 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3356 [Ben Laurie and Theo de Raadt]
3358 *) Add option to output public keys in req command.
3359 [Massimiliano Pala madwolf@openca.org]
3361 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3362 (up to about 10% better than before for P-192 and P-224).
3365 *) New functions/macros
3367 SSL_CTX_set_msg_callback(ctx, cb)
3368 SSL_CTX_set_msg_callback_arg(ctx, arg)
3369 SSL_set_msg_callback(ssl, cb)
3370 SSL_set_msg_callback_arg(ssl, arg)
3372 to request calling a callback function
3374 void cb(int write_p, int version, int content_type,
3375 const void *buf, size_t len, SSL *ssl, void *arg)
3377 whenever a protocol message has been completely received
3378 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3379 protocol version according to which the SSL library interprets
3380 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3381 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3382 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3383 specification (change_cipher_spec(20), alert(21), handshake(22)).
3384 'buf' and 'len' point to the actual message, 'ssl' to the
3385 SSL object, and 'arg' is the application-defined value set by
3386 SSL[_CTX]_set_msg_callback_arg().
3388 'openssl s_client' and 'openssl s_server' have new '-msg' options
3389 to enable a callback that displays all protocol messages.
3392 *) Change the shared library support so shared libraries are built as
3393 soon as the corresponding static library is finished, and thereby get
3394 openssl and the test programs linked against the shared library.
3395 This still only happens when the keyword "shard" has been given to
3396 the configuration scripts.
3398 NOTE: shared library support is still an experimental thing, and
3399 backward binary compatibility is still not guaranteed.
3400 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3402 *) Add support for Subject Information Access extension.
3403 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3405 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3406 additional bytes when new memory had to be allocated, not just
3407 when reusing an existing buffer.
3410 *) New command line and configuration option 'utf8' for the req command.
3411 This allows field values to be specified as UTF8 strings.
3414 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3415 runs for the former and machine-readable output for the latter.
3418 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3419 of the e-mail address in the DN (i.e., it will go into a certificate
3420 extension only). The new configuration file option 'email_in_dn = no'
3421 has the same effect.
3422 [Massimiliano Pala madwolf@openca.org]
3424 *) Change all functions with names starting with des_ to be starting
3425 with DES_ instead. Add wrappers that are compatible with libdes,
3426 but are named _ossl_old_des_*. Finally, add macros that map the
3427 des_* symbols to the corresponding _ossl_old_des_* if libdes
3428 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3429 desired, the des_* symbols will be mapped to DES_*, with one
3432 Since we provide two compatibility mappings, the user needs to
3433 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3434 compatibility is desired. The default (i.e., when that macro
3435 isn't defined) is OpenSSL 0.9.6c compatibility.
3437 There are also macros that enable and disable the support of old
3438 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3439 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3440 are defined, the default will apply: to support the old des routines.
3442 In either case, one must include openssl/des.h to get the correct
3443 definitions. Do not try to just include openssl/des_old.h, that
3446 NOTE: This is a major break of an old API into a new one. Software
3447 authors are encouraged to switch to the DES_ style functions. Some
3448 time in the future, des_old.h and the libdes compatibility functions
3449 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
3450 default), and then completely removed.
3453 *) Test for certificates which contain unsupported critical extensions.
3454 If such a certificate is found during a verify operation it is
3455 rejected by default: this behaviour can be overridden by either
3456 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
3457 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
3458 X509_supported_extension() has also been added which returns 1 if a
3459 particular extension is supported.
3462 *) Modify the behaviour of EVP cipher functions in similar way to digests
3463 to retain compatibility with existing code.
3466 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
3467 compatibility with existing code. In particular the 'ctx' parameter does
3468 not have to be to be initialized before the call to EVP_DigestInit() and
3469 it is tidied up after a call to EVP_DigestFinal(). New function
3470 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
3471 EVP_MD_CTX_copy() changed to not require the destination to be
3472 initialized valid and new function EVP_MD_CTX_copy_ex() added which
3473 requires the destination to be valid.
3475 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
3476 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
3479 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
3480 so that complete 'Handshake' protocol structures are kept in memory
3481 instead of overwriting 'msg_type' and 'length' with 'body' data.
3484 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
3485 [Massimo Santin via Richard Levitte]
3487 *) Major restructuring to the underlying ENGINE code. This includes
3488 reduction of linker bloat, separation of pure "ENGINE" manipulation
3489 (initialisation, etc) from functionality dealing with implementations
3490 of specific crypto iterfaces. This change also introduces integrated
3491 support for symmetric ciphers and digest implementations - so ENGINEs
3492 can now accelerate these by providing EVP_CIPHER and EVP_MD
3493 implementations of their own. This is detailed in crypto/engine/README
3494 as it couldn't be adequately described here. However, there are a few
3495 API changes worth noting - some RSA, DSA, DH, and RAND functions that
3496 were changed in the original introduction of ENGINE code have now
3497 reverted back - the hooking from this code to ENGINE is now a good
3498 deal more passive and at run-time, operations deal directly with
3499 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
3500 dereferencing through an ENGINE pointer any more. Also, the ENGINE
3501 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
3502 they were not being used by the framework as there is no concept of a
3503 BIGNUM_METHOD and they could not be generalised to the new
3504 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
3505 ENGINE_cpy() has been removed as it cannot be consistently defined in
3509 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
3512 *) Change mkdef.pl to sort symbols that get the same entry number,
3513 and make sure the automatically generated functions ERR_load_*
3514 become part of libeay.num as well.
3517 *) New function SSL_renegotiate_pending(). This returns true once
3518 renegotiation has been requested (either SSL_renegotiate() call
3519 or HelloRequest/ClientHello receveived from the peer) and becomes
3520 false once a handshake has been completed.
3521 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
3522 sends a HelloRequest, but does not ensure that a handshake takes
3523 place. SSL_renegotiate_pending() is useful for checking if the
3524 client has followed the request.)
3527 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
3528 By default, clients may request session resumption even during
3529 renegotiation (if session ID contexts permit); with this option,
3530 session resumption is possible only in the first handshake.
3532 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
3533 more bits available for options that should not be part of
3534 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
3537 *) Add some demos for certificate and certificate request creation.
3540 *) Make maximum certificate chain size accepted from the peer application
3541 settable (SSL*_get/set_max_cert_list()), as proposed by
3542 "Douglas E. Engert" <deengert@anl.gov>.
3545 *) Add support for shared libraries for Unixware-7
3546 (Boyd Lynn Gerber <gerberb@zenez.com>).
3549 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
3550 be done prior to destruction. Use this to unload error strings from
3551 ENGINEs that load their own error strings. NB: This adds two new API
3552 functions to "get" and "set" this destroy handler in an ENGINE.
3555 *) Alter all existing ENGINE implementations (except "openssl" and
3556 "openbsd") to dynamically instantiate their own error strings. This
3557 makes them more flexible to be built both as statically-linked ENGINEs
3558 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
3559 Also, add stub code to each that makes building them as self-contained
3560 shared-libraries easier (see README.ENGINE).
3563 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
3564 implementations into applications that are completely implemented in
3565 self-contained shared-libraries. The "dynamic" ENGINE exposes control
3566 commands that can be used to configure what shared-library to load and
3567 to control aspects of the way it is handled. Also, made an update to
3568 the README.ENGINE file that brings its information up-to-date and
3569 provides some information and instructions on the "dynamic" ENGINE
3570 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
3573 *) Make it possible to unload ranges of ERR strings with a new
3574 "ERR_unload_strings" function.
3577 *) Add a copy() function to EVP_MD.
3580 *) Make EVP_MD routines take a context pointer instead of just the
3581 md_data void pointer.
3584 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
3585 that the digest can only process a single chunk of data
3586 (typically because it is provided by a piece of
3587 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
3588 is only going to provide a single chunk of data, and hence the
3589 framework needn't accumulate the data for oneshot drivers.
3592 *) As with "ERR", make it possible to replace the underlying "ex_data"
3593 functions. This change also alters the storage and management of global
3594 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
3595 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
3596 index counters. The API functions that use this state have been changed
3597 to take a "class_index" rather than pointers to the class's local STACK
3598 and counter, and there is now an API function to dynamically create new
3599 classes. This centralisation allows us to (a) plug a lot of the
3600 thread-safety problems that existed, and (b) makes it possible to clean
3601 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
3602 such data would previously have always leaked in application code and
3603 workarounds were in place to make the memory debugging turn a blind eye
3604 to it. Application code that doesn't use this new function will still
3605 leak as before, but their memory debugging output will announce it now
3606 rather than letting it slide.
3608 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
3609 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
3610 has a return value to indicate success or failure.
3613 *) Make it possible to replace the underlying "ERR" functions such that the
3614 global state (2 LHASH tables and 2 locks) is only used by the "default"
3615 implementation. This change also adds two functions to "get" and "set"
3616 the implementation prior to it being automatically set the first time
3617 any other ERR function takes place. Ie. an application can call "get",
3618 pass the return value to a module it has just loaded, and that module
3619 can call its own "set" function using that value. This means the
3620 module's "ERR" operations will use (and modify) the error state in the
3621 application and not in its own statically linked copy of OpenSSL code.
3624 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
3625 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
3626 the operation, and provides a more encapsulated way for external code
3627 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
3628 to use these functions rather than manually incrementing the counts.
3630 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
3633 *) Add EVP test program.
3636 *) Add symmetric cipher support to ENGINE. Expect the API to change!
3639 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
3640 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
3641 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
3642 These allow a CRL to be built without having to access X509_CRL fields
3643 directly. Modify 'ca' application to use new functions.
3646 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
3647 bug workarounds. Rollback attack detection is a security feature.
3648 The problem will only arise on OpenSSL servers when TLSv1 is not
3649 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
3650 Software authors not wanting to support TLSv1 will have special reasons
3651 for their choice and can explicitly enable this option.
3652 [Bodo Moeller, Lutz Jaenicke]
3654 *) Rationalise EVP so it can be extended: don't include a union of
3655 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
3656 (similar to those existing for EVP_CIPHER_CTX).
3661 EVP_MD_CTX_init(&md); /* new function call */
3662 EVP_DigestInit(&md, EVP_sha1());
3663 EVP_DigestUpdate(&md, in, len);
3664 EVP_DigestFinal(&md, out, NULL);
3665 EVP_MD_CTX_cleanup(&md); /* new function call */
3669 *) Make DES key schedule conform to the usual scheme, as well as
3670 correcting its structure. This means that calls to DES functions
3671 now have to pass a pointer to a des_key_schedule instead of a
3672 plain des_key_schedule (which was actually always a pointer
3675 des_key_schedule ks;
3677 des_set_key_checked(..., &ks);
3678 des_ncbc_encrypt(..., &ks, ...);
3680 (Note that a later change renames 'des_...' into 'DES_...'.)
3683 *) Initial reduction of linker bloat: the use of some functions, such as
3684 PEM causes large amounts of unused functions to be linked in due to
3685 poor organisation. For example pem_all.c contains every PEM function
3686 which has a knock on effect of linking in large amounts of (unused)
3687 ASN1 code. Grouping together similar functions and splitting unrelated
3688 functions prevents this.
3691 *) Cleanup of EVP macros.
3694 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
3695 correct _ecb suffix.
3698 *) Add initial OCSP responder support to ocsp application. The
3699 revocation information is handled using the text based index
3700 use by the ca application. The responder can either handle
3701 requests generated internally, supplied in files (for example
3702 via a CGI script) or using an internal minimal server.
3705 *) Add configuration choices to get zlib com
projects / openssl.git / blob