5 Changes between 0.9.8k and 1.0 [xx XXX xxxx]
7 *) Update OCSP request code to permit adding custom headers to the request:
8 some responders need this.
11 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
12 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
13 BIO_set_cipher() and some obscure PEM functions were changed so they
14 can now return an error. The RAND changes required a change to the
15 RAND_METHOD structure.
18 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
19 a gcc attribute to warn if the result of a function is ignored. This
20 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
21 whose return value is often ignored.
24 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
26 [Julia Lawall <julia@diku.dk>]
28 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
29 needlessly dereferenced structures, used obsolete functions and
30 didn't handle all updated verify codes correctly.
33 *) Delete MD2 from algorithm tables. This follows the recommendation in
34 several standards that it is not used in new applications due to
35 several cryptographic weaknesses. The algorithm is also disabled in
36 the default configuration.
39 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
40 indicate the initial BIO being pushed or popped. This makes it possible
41 to determine whether the BIO is the one explicitly called or as a result
42 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
43 it handles reference counts correctly and doesn't zero out the I/O bio
44 when it is not being explicitly popped. WARNING: applications which
45 included workarounds for the old buggy behaviour will need to be modified
46 or they could free up already freed BIOs.
49 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
50 OPENSSL_asc2uni the original names were too generic and cause name
52 [Guenter <lists@gknw.net>]
54 *) Add ECDHE and PSK support to DTLS.
55 [Michael Tuexen <tuexen@fh-muenster.de>]
57 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
61 *) Add "missing" function EVP_MD_flags() (without this the only way to
62 retrieve a digest flags is by accessing the structure directly. Update
63 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
64 or cipher is registered as in the "from" argument. Print out all
65 registered digests in the dgst usage message instead of manually
66 attempting to work them out.
69 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
70 this allows the use of compression and extensions. Change default cipher
71 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
72 by default unless an application cipher string requests it.
75 *) Alter match criteria in PKCS12_parse(). It used to try to use local
76 key ids to find matching certificates and keys but some PKCS#12 files
77 don't follow the (somewhat unwritten) rules and this strategy fails.
78 Now just gather all certificates together and the first private key
79 then look for the first certificate that matches the key.
82 *) Support use of registered digest and cipher names for dgst and cipher
83 commands instead of having to add each one as a special case. So now
90 openssl dgst -sha256 foo
92 and this works for ENGINE based algorithms too.
96 *) Update Gost ENGINE to support parameter files.
97 [Victor B. Wagner <vitus@cryptocom.ru>]
99 *) Support GeneralizedTime in ca utility.
100 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
102 *) Enhance the hash format used for certificate directory links. The new
103 form uses the canonical encoding (meaning equivalent names will work
104 even if they aren't identical) and uses SHA1 instead of MD5. This form
105 is incompatible with the older format and as a result c_rehash should
106 be used to rebuild symbolic links.
109 *) Make PKCS#8 the default write format for private keys, replacing the
110 traditional format. This form is standardised, more secure and doesn't
111 include an implicit MD5 dependency.
114 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
115 committed to OpenSSL should pass this lot as a minimum.
118 *) Add session ticket override functionality for use by EAP-FAST.
119 [Jouni Malinen <j@w1.fi>]
121 *) Modify HMAC functions to return a value. Since these can be implemented
122 in an ENGINE errors can occur.
125 *) Type-checked OBJ_bsearch_ex.
128 *) Type-checked OBJ_bsearch. Also some constification necessitated
129 by type-checking. Still to come: TXT_DB, bsearch(?),
130 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
134 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
135 seconds to a tm structure directly, instead of going through OS
136 specific date routines. This avoids any issues with OS routines such
137 as the year 2038 bug. New *_adj() functions for ASN1 time structures
138 and X509_time_adj_ex() to cover the extended range. The existing
139 X509_time_adj() is still usable and will no longer have any date issues.
142 *) Delta CRL support. New use deltas option which will attempt to locate
143 and search any appropriate delta CRLs available.
145 This work was sponsored by Google.
148 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
149 code and add additional score elements. Validate alternate CRL paths
150 as part of the CRL checking and indicate a new error "CRL path validation
151 error" in this case. Applications wanting additional details can use
152 the verify callback and check the new "parent" field. If this is not
153 NULL CRL path validation is taking place. Existing applications wont
154 see this because it requires extended CRL support which is off by
157 This work was sponsored by Google.
160 *) Support for freshest CRL extension.
162 This work was sponsored by Google.
165 *) Initial indirect CRL support. Currently only supported in the CRLs
166 passed directly and not via lookup. Process certificate issuer
167 CRL entry extension and lookup CRL entries by bother issuer name
168 and serial number. Check and process CRL issuer entry in IDP extension.
170 This work was sponsored by Google.
173 *) Add support for distinct certificate and CRL paths. The CRL issuer
174 certificate is validated separately in this case. Only enabled if
175 an extended CRL support flag is set: this flag will enable additional
176 CRL functionality in future.
178 This work was sponsored by Google.
181 *) Add support for policy mappings extension.
183 This work was sponsored by Google.
186 *) Fixes to pathlength constraint, self issued certificate handling,
187 policy processing to align with RFC3280 and PKITS tests.
189 This work was sponsored by Google.
192 *) Support for name constraints certificate extension. DN, email, DNS
193 and URI types are currently supported.
195 This work was sponsored by Google.
198 *) To cater for systems that provide a pointer-based thread ID rather
199 than numeric, deprecate the current numeric thread ID mechanism and
200 replace it with a structure and associated callback type. This
201 mechanism allows a numeric "hash" to be extracted from a thread ID in
202 either case, and on platforms where pointers are larger than 'long',
203 mixing is done to help ensure the numeric 'hash' is usable even if it
204 can't be guaranteed unique. The default mechanism is to use "&errno"
205 as a pointer-based thread ID to distinguish between threads.
207 Applications that want to provide their own thread IDs should now use
208 CRYPTO_THREADID_set_callback() to register a callback that will call
209 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
211 Note that ERR_remove_state() is now deprecated, because it is tied
212 to the assumption that thread IDs are numeric. ERR_remove_state(0)
213 to free the current thread's error state should be replaced by
214 ERR_remove_thread_state(NULL).
216 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
217 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
218 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
219 application was previously providing a numeric thread callback that
220 was inappropriate for distinguishing threads, then uniqueness might
221 have been obtained with &errno that happened immediately in the
222 intermediate development versions of OpenSSL; this is no longer the
223 case, the numeric thread callback will now override the automatic use
225 [Geoff Thorpe, with help from Bodo Moeller]
227 *) Initial support for different CRL issuing certificates. This covers a
228 simple case where the self issued certificates in the chain exist and
229 the real CRL issuer is higher in the existing chain.
231 This work was sponsored by Google.
234 *) Removed effectively defunct crypto/store from the build.
237 *) Revamp of STACK to provide stronger type-checking. Still to come:
238 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
239 ASN1_STRING, CONF_VALUE.
242 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
243 RAM on SSL connections. This option can save about 34k per idle SSL.
246 *) Revamp of LHASH to provide stronger type-checking. Still to come:
247 STACK, TXT_DB, bsearch, qsort.
250 *) Initial support for Cryptographic Message Syntax (aka CMS) based
251 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
252 support for data, signedData, compressedData, digestedData and
253 encryptedData, envelopedData types included. Scripts to check against
254 RFC4134 examples draft and interop and consistency checks of many
255 content types and variants.
258 *) Add options to enc utility to support use of zlib compression BIO.
261 *) Extend mk1mf to support importing of options and assembly language
262 files from Configure script, currently only included in VC-WIN32.
263 The assembly language rules can now optionally generate the source
264 files from the associated perl scripts.
267 *) Implement remaining functionality needed to support GOST ciphersuites.
268 Interop testing has been performed using CryptoPro implementations.
269 [Victor B. Wagner <vitus@cryptocom.ru>]
271 *) s390x assembler pack.
274 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
278 *) Implement Opaque PRF Input TLS extension as specified in
279 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
280 official specification yet and no extension type assignment by
281 IANA exists, this extension (for now) will have to be explicitly
282 enabled when building OpenSSL by providing the extension number
283 to use. For example, specify an option
285 -DTLSEXT_TYPE_opaque_prf_input=0x9527
287 to the "config" or "Configure" script to enable the extension,
288 assuming extension number 0x9527 (which is a completely arbitrary
289 and unofficial assignment based on the MD5 hash of the Internet
290 Draft). Note that by doing so, you potentially lose
291 interoperability with other TLS implementations since these might
292 be using the same extension number for other purposes.
294 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
295 opaque PRF input value to use in the handshake. This will create
296 an interal copy of the length-'len' string at 'src', and will
297 return non-zero for success.
299 To get more control and flexibility, provide a callback function
302 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
303 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
307 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
310 Callback function 'cb' will be called in handshakes, and is
311 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
312 Argument 'arg' is for application purposes (the value as given to
313 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
314 be provided to the callback function). The callback function
315 has to return non-zero to report success: usually 1 to use opaque
316 PRF input just if possible, or 2 to enforce use of the opaque PRF
317 input. In the latter case, the library will abort the handshake
318 if opaque PRF input is not successfully negotiated.
320 Arguments 'peerinput' and 'len' given to the callback function
321 will always be NULL and 0 in the case of a client. A server will
322 see the client's opaque PRF input through these variables if
323 available (NULL and 0 otherwise). Note that if the server
324 provides an opaque PRF input, the length must be the same as the
325 length of the client's opaque PRF input.
327 Note that the callback function will only be called when creating
328 a new session (session resumption can resume whatever was
329 previously negotiated), and will not be called in SSL 2.0
330 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
331 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
332 for applications that need to enforce opaque PRF input.
336 *) Update ssl code to support digests other than SHA1+MD5 for handshake
339 [Victor B. Wagner <vitus@cryptocom.ru>]
341 *) Add RFC4507 support to OpenSSL. This includes the corrections in
342 RFC4507bis. The encrypted ticket format is an encrypted encoded
343 SSL_SESSION structure, that way new session features are automatically
346 If a client application caches session in an SSL_SESSION structure
347 support is transparent because tickets are now stored in the encoded
350 The SSL_CTX structure automatically generates keys for ticket
351 protection in servers so again support should be possible
352 with no application modification.
354 If a client or server wishes to disable RFC4507 support then the option
355 SSL_OP_NO_TICKET can be set.
357 Add a TLS extension debugging callback to allow the contents of any client
358 or server extensions to be examined.
360 This work was sponsored by Google.
363 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
364 OpenSSL should now compile cleanly on gcc 4.2
365 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
367 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
368 support including streaming MAC support: this is required for GOST
370 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
372 *) Add option -stream to use PKCS#7 streaming in smime utility. New
373 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
374 to output in BER and PEM format.
377 *) Experimental support for use of HMAC via EVP_PKEY interface. This
378 allows HMAC to be handled via the EVP_DigestSign*() interface. The
379 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
380 ENGINE support for HMAC keys which are unextractable. New -mac and
381 -macopt options to dgst utility.
384 *) New option -sigopt to dgst utility. Update dgst to use
385 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
386 alternative signing paramaters such as X9.31 or PSS in the dgst
390 *) Change ssl_cipher_apply_rule(), the internal function that does
391 the work each time a ciphersuite string requests enabling
392 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
393 removing ("!foo+bar") a class of ciphersuites: Now it maintains
394 the order of disabled ciphersuites such that those ciphersuites
395 that most recently went from enabled to disabled not only stay
396 in order with respect to each other, but also have higher priority
397 than other disabled ciphersuites the next time ciphersuites are
400 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
401 the same ciphersuites as with "HIGH" alone, but in a specific
402 order where the PSK ciphersuites come first (since they are the
403 most recently disabled ciphersuites when "HIGH" is parsed).
405 Also, change ssl_create_cipher_list() (using this new
406 funcionality) such that between otherwise identical
407 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
411 *) Change ssl_create_cipher_list() so that it automatically
412 arranges the ciphersuites in reasonable order before starting
413 to process the rule string. Thus, the definition for "DEFAULT"
414 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
415 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
416 This makes it much easier to arrive at a reasonable default order
417 in applications for which anonymous ciphers are OK (meaning
418 that you can't actually use DEFAULT).
419 [Bodo Moeller; suggested by Victor Duchovni]
421 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
422 processing) into multiple integers instead of setting
423 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
424 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
425 (These masks as well as the individual bit definitions are hidden
426 away into the non-exported interface ssl/ssl_locl.h, so this
427 change to the definition of the SSL_CIPHER structure shouldn't
428 affect applications.) This give us more bits for each of these
429 categories, so there is no longer a need to coagulate AES128 and
430 AES256 into a single algorithm bit, and to coagulate Camellia128
431 and Camellia256 into a single algorithm bit, which has led to all
434 Thus, among other things, the kludge introduced in 0.9.7m and
435 0.9.8e for masking out AES256 independently of AES128 or masking
436 out Camellia256 independently of AES256 is not needed here in 0.9.9.
438 With the change, we also introduce new ciphersuite aliases that
439 so far were missing: "AES128", "AES256", "CAMELLIA128", and
443 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
444 Use the leftmost N bytes of the signature input if the input is
445 larger than the prime q (with N being the size in bytes of q).
448 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
449 it yet and it is largely untested.
452 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
455 *) Initial incomplete changes to avoid need for function casts in OpenSSL
456 some compilers (gcc 4.2 and later) reject their use. Safestack is
457 reimplemented. Update ASN1 to avoid use of legacy functions.
460 *) Win32/64 targets are linked with Winsock2.
463 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
464 to external functions. This can be used to increase CRL handling
465 efficiency especially when CRLs are very large by (for example) storing
466 the CRL revoked certificates in a database.
469 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
470 new CRLs added to a directory can be used. New command line option
471 -verify_return_error to s_client and s_server. This causes real errors
472 to be returned by the verify callback instead of carrying on no matter
473 what. This reflects the way a "real world" verify callback would behave.
476 *) GOST engine, supporting several GOST algorithms and public key formats.
477 Kindly donated by Cryptocom.
480 *) Partial support for Issuing Distribution Point CRL extension. CRLs
481 partitioned by DP are handled but no indirect CRL or reason partitioning
482 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
483 selected via a scoring technique which handles IDP and AKID in CRLs.
486 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
487 will ultimately be used for all verify operations: this will remove the
488 X509_STORE dependency on certificate verification and allow alternative
489 lookup methods. X509_STORE based implementations of these two callbacks.
492 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
493 Modify get_crl() to find a valid (unexpired) CRL if possible.
496 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
497 this would be called X509_CRL_cmp() but that name is already used by
498 a function that just compares CRL issuer names. Cache several CRL
499 extensions in X509_CRL structure and cache CRLDP in X509.
502 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
503 this maps equivalent X509_NAME structures into a consistent structure.
504 Name comparison can then be performed rapidly using memcmp().
507 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
511 *) Allow digests to supply their own micalg string for S/MIME type using
512 the ctrl EVP_MD_CTRL_MICALG.
515 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
516 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
517 ctrl. It can then customise the structure before and/or after signing
521 *) New function OBJ_add_sigid() to allow application defined signature OIDs
522 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
523 to free up any added signature OIDs.
526 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
527 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
528 digest and cipher tables. New options added to openssl utility:
529 list-message-digest-algorithms and list-cipher-algorithms.
532 *) Change the array representation of binary polynomials: the list
533 of degrees of non-zero coefficients is now terminated with -1.
534 Previously it was terminated with 0, which was also part of the
535 value; thus, the array representation was not applicable to
536 polynomials where t^0 has coefficient zero. This change makes
537 the array representation useful in a more general context.
540 *) Various modifications and fixes to SSL/TLS cipher string
541 handling. For ECC, the code now distinguishes between fixed ECDH
542 with RSA certificates on the one hand and with ECDSA certificates
543 on the other hand, since these are separate ciphersuites. The
544 unused code for Fortezza ciphersuites has been removed.
546 For consistency with EDH, ephemeral ECDH is now called "EECDH"
547 (not "ECDHE"). For consistency with the code for DH
548 certificates, use of ECDH certificates is now considered ECDH
549 authentication, not RSA or ECDSA authentication (the latter is
550 merely the CA's signing algorithm and not actively used in the
553 The temporary ciphersuite alias "ECCdraft" is no longer
554 available, and ECC ciphersuites are no longer excluded from "ALL"
555 and "DEFAULT". The following aliases now exist for RFC 4492
556 ciphersuites, most of these by analogy with the DH case:
558 kECDHr - ECDH cert, signed with RSA
559 kECDHe - ECDH cert, signed with ECDSA
560 kECDH - ECDH cert (signed with either RSA or ECDSA)
561 kEECDH - ephemeral ECDH
562 ECDH - ECDH cert or ephemeral ECDH
568 AECDH - anonymous ECDH
569 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
573 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
574 Use correct micalg parameters depending on digest(s) in signed message.
577 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
578 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
581 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
582 an engine to register a method. Add ENGINE lookups for methods and
583 functional reference processing.
586 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
587 EVP_{Sign,Verify}* which allow an application to customise the signature
591 *) New -resign option to smime utility. This adds one or more signers
592 to an existing PKCS#7 signedData structure. Also -md option to use an
593 alternative message digest algorithm for signing.
596 *) Tidy up PKCS#7 routines and add new functions to make it easier to
597 create PKCS7 structures containing multiple signers. Update smime
598 application to support multiple signers.
601 *) New -macalg option to pkcs12 utility to allow setting of an alternative
605 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
606 Reorganize PBE internals to lookup from a static table using NIDs,
607 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
608 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
609 PRF which will be automatically used with PBES2.
612 *) Replace the algorithm specific calls to generate keys in "req" with the
616 *) Update PKCS#7 enveloped data routines to use new API. This is now
617 supported by any public key method supporting the encrypt operation. A
618 ctrl is added to allow the public key algorithm to examine or modify
619 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
623 *) Add a ctrl to asn1 method to allow a public key algorithm to express
624 a default digest type to use. In most cases this will be SHA1 but some
625 algorithms (such as GOST) need to specify an alternative digest. The
626 return value indicates how strong the prefernce is 1 means optional and
627 2 is mandatory (that is it is the only supported type). Modify
628 ASN1_item_sign() to accept a NULL digest argument to indicate it should
629 use the default md. Update openssl utilities to use the default digest
630 type for signing if it is not explicitly indicated.
633 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
634 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
635 signing method from the key type. This effectively removes the link
636 between digests and public key types.
639 *) Add an OID cross reference table and utility functions. Its purpose is to
640 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
641 rsaEncryption. This will allow some of the algorithm specific hackery
642 needed to use the correct OID to be removed.
645 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
646 structures for PKCS7_sign(). They are now set up by the relevant public
650 *) Add provisional EC pkey method with support for ECDSA and ECDH.
653 *) Add support for key derivation (agreement) in the API, DH method and
657 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
658 public and private key formats. As a side effect these add additional
659 command line functionality not previously available: DSA signatures can be
660 generated and verified using pkeyutl and DH key support and generation in
665 [Oliver Tappe <zooey@hirschkaefer.de>]
667 *) New make target "install_html_docs" installs HTML renditions of the
669 [Oliver Tappe <zooey@hirschkaefer.de>]
671 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
672 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
673 support key and parameter generation and add initial key generation
674 functionality for RSA.
677 *) Add functions for main EVP_PKEY_method operations. The undocumented
678 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
679 EVP_PKEY_{encrypt,decrypt}_old.
682 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
683 key API, doesn't do much yet.
686 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
687 public key algorithms. New option to openssl utility:
688 "list-public-key-algorithms" to print out info.
691 *) Implement the Supported Elliptic Curves Extension for
692 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
695 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
696 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
699 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
700 utilities such as rsa, dsa, dsaparam etc except they process any key
704 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
705 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
706 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
710 *) Initial support for pluggable public key ASN1.
711 De-spaghettify the public key ASN1 handling. Move public and private
712 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
713 algorithm specific handling to a single module within the relevant
714 algorithm directory. Add functions to allow (near) opaque processing
715 of public and private key structures.
718 *) Implement the Supported Point Formats Extension for
719 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
722 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
723 for the psk identity [hint] and the psk callback functions to the
724 SSL_SESSION, SSL and SSL_CTX structure.
727 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
731 SSL_CTX_use_psk_identity_hint
732 SSL_get_psk_identity_hint
734 SSL_use_psk_identity_hint
736 [Mika Kousa and Pasi Eronen of Nokia Corporation]
738 *) Add RFC 3161 compliant time stamp request creation, response generation
739 and response verification functionality.
740 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
742 *) Add initial support for TLS extensions, specifically for the server_name
743 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
744 have new members for a host name. The SSL data structure has an
745 additional member SSL_CTX *initial_ctx so that new sessions can be
746 stored in that context to allow for session resumption, even after the
747 SSL has been switched to a new SSL_CTX in reaction to a client's
748 server_name extension.
750 New functions (subject to change):
753 SSL_get_servername_type()
756 New CTRL codes and macros (subject to change):
758 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
759 - SSL_CTX_set_tlsext_servername_callback()
760 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
761 - SSL_CTX_set_tlsext_servername_arg()
762 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
764 openssl s_client has a new '-servername ...' option.
766 openssl s_server has new options '-servername_host ...', '-cert2 ...',
767 '-key2 ...', '-servername_fatal' (subject to change). This allows
768 testing the HostName extension for a specific single host name ('-cert'
769 and '-key' remain fallbacks for handshakes without HostName
770 negotiation). If the unrecogninzed_name alert has to be sent, this by
771 default is a warning; it becomes fatal with the '-servername_fatal'
774 [Peter Sylvester, Remy Allais, Christophe Renou]
776 *) Whirlpool hash implementation is added.
779 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
780 bn(64,32). Because of instruction set limitations it doesn't have
781 any negative impact on performance. This was done mostly in order
782 to make it possible to share assembler modules, such as bn_mul_mont
783 implementations, between 32- and 64-bit builds without hassle.
786 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
787 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
791 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
792 dedicated Montgomery multiplication procedure, is introduced.
793 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
794 "64-bit" performance on certain 32-bit targets.
797 *) New option SSL_OP_NO_COMP to disable use of compression selectively
798 in SSL structures. New SSL ctrl to set maximum send fragment size.
799 Save memory by seeting the I/O buffer sizes dynamically instead of
800 using the maximum available value.
803 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
804 in addition to the text details.
807 *) Very, very preliminary EXPERIMENTAL support for printing of general
808 ASN1 structures. This currently produces rather ugly output and doesn't
809 handle several customised structures at all.
812 *) Integrated support for PVK file format and some related formats such
813 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
814 these in the 'rsa' and 'dsa' utilities.
817 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
820 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
821 place for the (very old) "NETSCAPE" format certificates which are now
822 handled using new ASN1 code equivalents.
825 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
826 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
827 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
830 *) Modify CRL distribution points extension code to print out previously
831 unsupported fields. Enhance extension setting code to allow setting of
835 *) Add print and set support for Issuing Distribution Point CRL extension.
838 *) Change 'Configure' script to enable Camellia by default.
841 Changes between 0.9.8k and 0.9.8l [xx XXX xxxx]
843 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
844 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
845 fixes for a few places where the return code is not checked
847 [Julia Lawall <julia@diku.dk>]
849 *) Add --strict-warnings option to Configure script to include devteam
850 warnings in other configurations.
853 *) Add support for --libdir option and LIBDIR variable in makefiles. This
854 makes it possible to install openssl libraries in locations which
855 have names other than "lib", for example "/usr/lib64" which some
857 [Steve Henson, based on patch from Jeremy Utley]
859 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
860 X690 8.9.12 and can produce some misleading textual output of OIDs.
861 [Steve Henson, reported by Dan Kaminsky]
863 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
867 *) Fix the server certificate chain building code to use X509_verify_cert(),
868 it used to have an ad-hoc builder which was unable to cope with anything
869 other than a simple chain.
870 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
872 *) Don't check self signed certificate signatures in X509_verify_cert()
873 by default (a flag can override this): it just wastes time without
874 adding any security. As a useful side effect self signed root CAs
875 with non-FIPS digests are now usable in FIPS mode.
878 *) In dtls1_process_out_of_seq_message() the check if the current message
879 is already buffered was missing. For every new message was memory
880 allocated, allowing an attacker to perform an denial of service attack
881 with sending out of seq handshake messages until there is no memory
882 left. Additionally every future messege was buffered, even if the
883 sequence number made no sense and would be part of another handshake.
884 So only messages with sequence numbers less than 10 in advance will be
886 [Robin Seggelmann, discovered by Daniel Mentz]
888 *) Records are buffered if they arrive with a future epoch to be
889 processed after finishing the corresponding handshake. There is
890 currently no limitation to this buffer allowing an attacker to perform
891 a DOS attack with sending records with future epochs until there is no
892 memory left. This patch adds the pqueue_size() function to detemine
893 the size of a buffer and limits the record buffer to 100 entries.
894 [Robin Seggelmann, discovered by Daniel Mentz]
896 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
897 parent structure is freed.
900 *) Handle non-blocking I/O properly in SSL_shutdown() call.
901 [Darryl Miles <darryl-mailinglists@netbauds.net>]
904 [Ilya O. <vrghost@gmail.com>]
906 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
908 *) Don't set val to NULL when freeing up structures, it is freed up by
909 underlying code. If sizeof(void *) > sizeof(long) this can result in
910 zeroing past the valid field. (CVE-2009-0789)
911 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
913 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
914 checked correctly. This would allow some invalid signed attributes to
915 appear to verify correctly. (CVE-2009-0591)
916 [Ivan Nestlerode <inestlerode@us.ibm.com>]
918 *) Reject UniversalString and BMPString types with invalid lengths. This
919 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
920 a legal length. (CVE-2009-0590)
923 *) Set S/MIME signing as the default purpose rather than setting it
924 unconditionally. This allows applications to override it at the store
928 *) Permit restricted recursion of ASN1 strings. This is needed in practice
929 to handle some structures.
932 *) Improve efficiency of mem_gets: don't search whole buffer each time
934 [Jeremy Shapiro <jnshapir@us.ibm.com>]
936 *) New -hex option for openssl rand.
939 *) Print out UTF8String and NumericString when parsing ASN1.
942 *) Support NumericString type for name components.
945 *) Allow CC in the environment to override the automatically chosen
946 compiler. Note that nothing is done to ensure flags work with the
950 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
952 *) Properly check EVP_VerifyFinal() and similar return values
954 [Ben Laurie, Bodo Moeller, Google Security Team]
956 *) Enable TLS extensions by default.
959 *) Allow the CHIL engine to be loaded, whether the application is
960 multithreaded or not. (This does not release the developer from the
961 obligation to set up the dynamic locking callbacks.)
962 [Sander Temme <sander@temme.net>]
964 *) Use correct exit code if there is an error in dgst command.
965 [Steve Henson; problem pointed out by Roland Dirlewanger]
967 *) Tweak Configure so that you need to say "experimental-jpake" to enable
968 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
971 *) Add experimental JPAKE support, including demo authentication in
972 s_client and s_server.
975 *) Set the comparison function in v3_addr_canonize().
976 [Rob Austein <sra@hactrn.net>]
978 *) Add support for XMPP STARTTLS in s_client.
979 [Philip Paeps <philip@freebsd.org>]
981 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
982 to ensure that even with this option, only ciphersuites in the
983 server's preference list will be accepted. (Note that the option
984 applies only when resuming a session, so the earlier behavior was
985 just about the algorithm choice for symmetric cryptography.)
988 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
990 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
991 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
994 *) The fix in 0.9.8c that supposedly got rid of unsafe
995 double-checked locking was incomplete for RSA blinding,
996 addressing just one layer of what turns out to have been
997 doubly unsafe triple-checked locking.
999 So now fix this for real by retiring the MONT_HELPER macro
1000 in crypto/rsa/rsa_eay.c.
1002 [Bodo Moeller; problem pointed out by Marius Schilder]
1004 *) Various precautionary measures:
1006 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1008 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1009 (NB: This would require knowledge of the secret session ticket key
1010 to exploit, in which case you'd be SOL either way.)
1012 - Change bn_nist.c so that it will properly handle input BIGNUMs
1013 outside the expected range.
1015 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1018 [Neel Mehta, Bodo Moeller]
1020 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1021 the load fails. Useful for distros.
1022 [Ben Laurie and the FreeBSD team]
1024 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1027 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1030 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1032 This work was sponsored by Logica.
1035 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1036 keystores. Support for SSL/TLS client authentication too.
1037 Not compiled unless enable-capieng specified to Configure.
1039 This work was sponsored by Logica.
1042 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1043 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1044 attribute creation routines such as certifcate requests and PKCS#12
1048 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1050 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1051 handshake which could lead to a cilent crash as found using the
1052 Codenomicon TLS test suite (CVE-2008-1672)
1053 [Steve Henson, Mark Cox]
1055 *) Fix double free in TLS server name extensions which could lead to
1056 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1059 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1061 Clear the error queue to ensure that error entries left from
1062 older function calls do not interfere with the correct operation.
1063 [Lutz Jaenicke, Erik de Castro Lopo]
1065 *) Remove root CA certificates of commercial CAs:
1067 The OpenSSL project does not recommend any specific CA and does not
1068 have any policy with respect to including or excluding any CA.
1069 Therefore it does not make any sense to ship an arbitrary selection
1070 of root CA certificates with the OpenSSL software.
1073 *) RSA OAEP patches to fix two separate invalid memory reads.
1074 The first one involves inputs when 'lzero' is greater than
1075 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1076 before the beginning of from). The second one involves inputs where
1077 the 'db' section contains nothing but zeroes (there is a one-byte
1078 invalid read after the end of 'db').
1079 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1081 *) Partial backport from 0.9.9-dev:
1083 Introduce bn_mul_mont (dedicated Montgomery multiplication
1084 procedure) as a candidate for BIGNUM assembler implementation.
1085 While 0.9.9-dev uses assembler for various architectures, only
1086 x86_64 is available by default here in the 0.9.8 branch, and
1087 32-bit x86 is available through a compile-time setting.
1089 To try the 32-bit x86 assembler implementation, use Configure
1090 option "enable-montasm" (which exists only for this backport).
1092 As "enable-montasm" for 32-bit x86 disclaims code stability
1093 anyway, in this constellation we activate additional code
1094 backported from 0.9.9-dev for further performance improvements,
1095 namely BN_from_montgomery_word. (To enable this otherwise,
1096 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1098 [Andy Polyakov (backport partially by Bodo Moeller)]
1100 *) Add TLS session ticket callback. This allows an application to set
1101 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1102 values. This is useful for key rollover for example where several key
1103 sets may exist with different names.
1106 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1107 This was broken until now in 0.9.8 releases, such that the only way
1108 a registered ENGINE could be used (assuming it initialises
1109 successfully on the host) was to explicitly set it as the default
1110 for the relevant algorithms. This is in contradiction with 0.9.7
1111 behaviour and the documentation. With this fix, when an ENGINE is
1112 registered into a given algorithm's table of implementations, the
1113 'uptodate' flag is reset so that auto-discovery will be used next
1114 time a new context for that algorithm attempts to select an
1116 [Ian Lister (tweaked by Geoff Thorpe)]
1118 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1119 implemention in the following ways:
1121 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1124 Lack of BER streaming support means one pass streaming processing is
1125 only supported if data is detached: setting the streaming flag is
1126 ignored for embedded content.
1128 CMS support is disabled by default and must be explicitly enabled
1129 with the enable-cms configuration option.
1132 *) Update the GMP engine glue to do direct copies between BIGNUM and
1133 mpz_t when openssl and GMP use the same limb size. Otherwise the
1134 existing "conversion via a text string export" trick is still used.
1135 [Paul Sheer <paulsheer@gmail.com>]
1137 *) Zlib compression BIO. This is a filter BIO which compressed and
1138 uncompresses any data passed through it.
1141 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1142 RFC3394 compatible AES key wrapping.
1145 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1146 sets string data without copying. X509_ALGOR_set0() and
1147 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1148 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1149 from an X509_ATTRIBUTE structure optionally checking it occurs only
1150 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1154 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1155 to get the expected BN_FLG_CONSTTIME behavior.
1156 [Bodo Moeller (Google)]
1160 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1161 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1162 - added some more tests to do_tests.pl
1163 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1164 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1165 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1166 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1167 - various changes to netware.pl to enable gcc-cross builds on Win32
1169 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1170 - various changes to fix missing prototype warnings
1171 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1172 - added AES, WHIRLPOOL and CPUID assembler code to build files
1173 - added missing AES assembler make rules to mk1mf.pl
1174 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1175 [Guenter Knauf <eflash@gmx.net>]
1177 *) Implement certificate status request TLS extension defined in RFC3546.
1178 A client can set the appropriate parameters and receive the encoded
1179 OCSP response via a callback. A server can query the supplied parameters
1180 and set the encoded OCSP response in the callback. Add simplified examples
1181 to s_client and s_server.
1184 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1186 *) Fix various bugs:
1187 + Binary incompatibility of ssl_ctx_st structure
1188 + DTLS interoperation with non-compliant servers
1189 + Don't call get_session_cb() without proposed session
1190 + Fix ia64 assembler code
1191 [Andy Polyakov, Steve Henson]
1193 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1195 *) DTLS Handshake overhaul. There were longstanding issues with
1196 OpenSSL DTLS implementation, which were making it impossible for
1197 RFC 4347 compliant client to communicate with OpenSSL server.
1198 Unfortunately just fixing these incompatibilities would "cut off"
1199 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1200 server keeps tolerating non RFC compliant syntax. The opposite is
1201 not true, 0.9.8f client can not communicate with earlier server.
1202 This update even addresses CVE-2007-4995.
1205 *) Changes to avoid need for function casts in OpenSSL: some compilers
1206 (gcc 4.2 and later) reject their use.
1207 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1210 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1211 RFC4507bis. The encrypted ticket format is an encrypted encoded
1212 SSL_SESSION structure, that way new session features are automatically
1215 If a client application caches session in an SSL_SESSION structure
1216 support is transparent because tickets are now stored in the encoded
1219 The SSL_CTX structure automatically generates keys for ticket
1220 protection in servers so again support should be possible
1221 with no application modification.
1223 If a client or server wishes to disable RFC4507 support then the option
1224 SSL_OP_NO_TICKET can be set.
1226 Add a TLS extension debugging callback to allow the contents of any client
1227 or server extensions to be examined.
1229 This work was sponsored by Google.
1232 *) Add initial support for TLS extensions, specifically for the server_name
1233 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1234 have new members for a host name. The SSL data structure has an
1235 additional member SSL_CTX *initial_ctx so that new sessions can be
1236 stored in that context to allow for session resumption, even after the
1237 SSL has been switched to a new SSL_CTX in reaction to a client's
1238 server_name extension.
1240 New functions (subject to change):
1242 SSL_get_servername()
1243 SSL_get_servername_type()
1246 New CTRL codes and macros (subject to change):
1248 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1249 - SSL_CTX_set_tlsext_servername_callback()
1250 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1251 - SSL_CTX_set_tlsext_servername_arg()
1252 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1254 openssl s_client has a new '-servername ...' option.
1256 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1257 '-key2 ...', '-servername_fatal' (subject to change). This allows
1258 testing the HostName extension for a specific single host name ('-cert'
1259 and '-key' remain fallbacks for handshakes without HostName
1260 negotiation). If the unrecogninzed_name alert has to be sent, this by
1261 default is a warning; it becomes fatal with the '-servername_fatal'
1264 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1266 *) Add AES and SSE2 assembly language support to VC++ build.
1269 *) Mitigate attack on final subtraction in Montgomery reduction.
1272 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1273 (which previously caused an internal error).
1276 *) Squeeze another 10% out of IGE mode when in != out.
1279 *) AES IGE mode speedup.
1280 [Dean Gaudet (Google)]
1282 *) Add the Korean symmetric 128-bit cipher SEED (see
1283 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1284 add SEED ciphersuites from RFC 4162:
1286 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1287 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1288 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1289 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1291 To minimize changes between patchlevels in the OpenSSL 0.9.8
1292 series, SEED remains excluded from compilation unless OpenSSL
1293 is configured with 'enable-seed'.
1294 [KISA, Bodo Moeller]
1296 *) Mitigate branch prediction attacks, which can be practical if a
1297 single processor is shared, allowing a spy process to extract
1298 information. For detailed background information, see
1299 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1300 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1301 and Necessary Software Countermeasures"). The core of the change
1302 are new versions BN_div_no_branch() and
1303 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1304 respectively, which are slower, but avoid the security-relevant
1305 conditional branches. These are automatically called by BN_div()
1306 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1307 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1308 remove a conditional branch.
1310 BN_FLG_CONSTTIME is the new name for the previous
1311 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1312 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1313 in the exponent causes BN_mod_exp_mont() to use the alternative
1314 implementation in BN_mod_exp_mont_consttime().) The old name
1315 remains as a deprecated alias.
1317 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1318 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1319 constant-time implementations for more than just exponentiation.
1320 Here too the old name is kept as a deprecated alias.
1322 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1323 the BN_BLINDING structure gets an independent copy of the
1324 modulus. This means that the previous "BIGNUM *m" argument to
1325 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1326 essentially becomes "const BIGNUM *m", although we can't actually
1327 change this in the header file before 0.9.9. It allows
1328 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1329 enable BN_FLG_CONSTTIME.
1331 [Matthew D Wood (Intel Corp)]
1333 *) In the SSL/TLS server implementation, be strict about session ID
1334 context matching (which matters if an application uses a single
1335 external cache for different purposes). Previously,
1336 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1337 set. This did ensure strict client verification, but meant that,
1338 with applications using a single external cache for quite
1339 different requirements, clients could circumvent ciphersuite
1340 restrictions for a given session ID context by starting a session
1341 in a different context.
1344 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1345 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1346 authentication-only ciphersuites.
1349 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1350 not complete and could lead to a possible single byte overflow
1351 (CVE-2007-5135) [Ben Laurie]
1353 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1355 *) Since AES128 and AES256 (and similarly Camellia128 and
1356 Camellia256) share a single mask bit in the logic of
1357 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1358 kludge to work properly if AES128 is available and AES256 isn't
1359 (or if Camellia128 is available and Camellia256 isn't).
1362 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1363 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1364 When a point or a seed is encoded in a BIT STRING, we need to
1365 prevent the removal of trailing zero bits to get the proper DER
1366 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1367 of a NamedBitList, for which trailing 0 bits need to be removed.)
1370 *) Have SSL/TLS server implementation tolerate "mismatched" record
1371 protocol version while receiving ClientHello even if the
1372 ClientHello is fragmented. (The server can't insist on the
1373 particular protocol version it has chosen before the ServerHello
1374 message has informed the client about his choice.)
1377 *) Add RFC 3779 support.
1378 [Rob Austein for ARIN, Ben Laurie]
1380 *) Load error codes if they are not already present instead of using a
1381 static variable. This allows them to be cleanly unloaded and reloaded.
1382 Improve header file function name parsing.
1385 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1386 or CAPABILITY handshake as required by RFCs.
1389 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1391 *) Introduce limits to prevent malicious keys being able to
1392 cause a denial of service. (CVE-2006-2940)
1393 [Steve Henson, Bodo Moeller]
1395 *) Fix ASN.1 parsing of certain invalid structures that can result
1396 in a denial of service. (CVE-2006-2937) [Steve Henson]
1398 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1399 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1401 *) Fix SSL client code which could crash if connecting to a
1402 malicious SSLv2 server. (CVE-2006-4343)
1403 [Tavis Ormandy and Will Drewry, Google Security Team]
1405 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1406 match only those. Before that, "AES256-SHA" would be interpreted
1407 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1408 the same strength classification in 0.9.7h) as we currently only
1409 have a single AES bit in the ciphersuite description bitmap.
1410 That change, however, also applied to ciphersuite strings such as
1411 "RC4-MD5" that intentionally matched multiple ciphersuites --
1412 namely, SSL 2.0 ciphersuites in addition to the more common ones
1413 from SSL 3.0/TLS 1.0.
1415 So we change the selection algorithm again: Naming an explicit
1416 ciphersuite selects this one ciphersuite, and any other similar
1417 ciphersuite (same bitmap) from *other* protocol versions.
1418 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1419 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1421 Since SSL 2.0 does not have any ciphersuites for which the
1422 128/256 bit distinction would be relevant, this works for now.
1423 The proper fix will be to use different bits for AES128 and
1424 AES256, which would have avoided the problems from the beginning;
1425 however, bits are scarce, so we can only do this in a new release
1426 (not just a patchlevel) when we can change the SSL_CIPHER
1427 definition to split the single 'unsigned long mask' bitmap into
1428 multiple values to extend the available space.
1432 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1434 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1435 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1437 *) Add AES IGE and biIGE modes.
1440 *) Change the Unix randomness entropy gathering to use poll() when
1441 possible instead of select(), since the latter has some
1442 undesirable limitations.
1443 [Darryl Miles via Richard Levitte and Bodo Moeller]
1445 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
1446 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
1447 cannot be implicitly activated as part of, e.g., the "AES" alias.
1448 However, please upgrade to OpenSSL 0.9.9[-dev] for
1449 non-experimental use of the ECC ciphersuites to get TLS extension
1450 support, which is required for curve and point format negotiation
1451 to avoid potential handshake problems.
1454 *) Disable rogue ciphersuites:
1456 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1457 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1458 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1460 The latter two were purportedly from
1461 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1464 Also deactivate the remaining ciphersuites from
1465 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1466 unofficial, and the ID has long expired.
1469 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1470 dual-core machines) and other potential thread-safety issues.
1473 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
1474 versions), which is now available for royalty-free use
1475 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
1476 Also, add Camellia TLS ciphersuites from RFC 4132.
1478 To minimize changes between patchlevels in the OpenSSL 0.9.8
1479 series, Camellia remains excluded from compilation unless OpenSSL
1480 is configured with 'enable-camellia'.
1483 *) Disable the padding bug check when compression is in use. The padding
1484 bug check assumes the first packet is of even length, this is not
1485 necessarily true if compresssion is enabled and can result in false
1486 positives causing handshake failure. The actual bug test is ancient
1487 code so it is hoped that implementations will either have fixed it by
1488 now or any which still have the bug do not support compression.
1491 Changes between 0.9.8a and 0.9.8b [04 May 2006]
1493 *) When applying a cipher rule check to see if string match is an explicit
1494 cipher suite and only match that one cipher suite if it is.
1497 *) Link in manifests for VC++ if needed.
1498 [Austin Ziegler <halostatue@gmail.com>]
1500 *) Update support for ECC-based TLS ciphersuites according to
1501 draft-ietf-tls-ecc-12.txt with proposed changes (but without
1502 TLS extensions, which are supported starting with the 0.9.9
1503 branch, not in the OpenSSL 0.9.8 branch).
1506 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
1507 opaque EVP_CIPHER_CTX handling.
1510 *) Fixes and enhancements to zlib compression code. We now only use
1511 "zlib1.dll" and use the default __cdecl calling convention on Win32
1512 to conform with the standards mentioned here:
1513 http://www.zlib.net/DLL_FAQ.txt
1514 Static zlib linking now works on Windows and the new --with-zlib-include
1515 --with-zlib-lib options to Configure can be used to supply the location
1516 of the headers and library. Gracefully handle case where zlib library
1520 *) Several fixes and enhancements to the OID generation code. The old code
1521 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
1522 handle numbers larger than ULONG_MAX, truncated printing and had a
1523 non standard OBJ_obj2txt() behaviour.
1526 *) Add support for building of engines under engine/ as shared libraries
1527 under VC++ build system.
1530 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
1531 Hopefully, we will not see any false combination of paths any more.
1534 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
1536 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1537 (part of SSL_OP_ALL). This option used to disable the
1538 countermeasure against man-in-the-middle protocol-version
1539 rollback in the SSL 2.0 server implementation, which is a bad
1540 idea. (CVE-2005-2969)
1542 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1543 for Information Security, National Institute of Advanced Industrial
1544 Science and Technology [AIST], Japan)]
1546 *) Add two function to clear and return the verify parameter flags.
1549 *) Keep cipherlists sorted in the source instead of sorting them at
1550 runtime, thus removing the need for a lock.
1553 *) Avoid some small subgroup attacks in Diffie-Hellman.
1554 [Nick Mathewson and Ben Laurie]
1556 *) Add functions for well-known primes.
1559 *) Extended Windows CE support.
1560 [Satoshi Nakamura and Andy Polyakov]
1562 *) Initialize SSL_METHOD structures at compile time instead of during
1563 runtime, thus removing the need for a lock.
1566 *) Make PKCS7_decrypt() work even if no certificate is supplied by
1567 attempting to decrypt each encrypted key in turn. Add support to
1571 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
1573 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
1576 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
1579 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
1580 key into the same file any more.
1583 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
1586 *) Add -utf8 command line and config file option to 'ca'.
1587 [Stefan <stf@udoma.org]
1589 *) Removed the macro des_crypt(), as it seems to conflict with some
1590 libraries. Use DES_crypt().
1593 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
1594 involves renaming the source and generated shared-libs for
1595 both. The engines will accept the corrected or legacy ids
1596 ('ncipher' and '4758_cca' respectively) when binding. NB,
1597 this only applies when building 'shared'.
1598 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
1600 *) Add attribute functions to EVP_PKEY structure. Modify
1601 PKCS12_create() to recognize a CSP name attribute and
1602 use it. Make -CSP option work again in pkcs12 utility.
1605 *) Add new functionality to the bn blinding code:
1606 - automatic re-creation of the BN_BLINDING parameters after
1607 a fixed number of uses (currently 32)
1608 - add new function for parameter creation
1609 - introduce flags to control the update behaviour of the
1610 BN_BLINDING parameters
1611 - hide BN_BLINDING structure
1612 Add a second BN_BLINDING slot to the RSA structure to improve
1613 performance when a single RSA object is shared among several
1617 *) Add support for DTLS.
1618 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
1620 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
1621 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
1624 *) Remove buggy and incompletet DH cert support from
1625 ssl/ssl_rsa.c and ssl/s3_both.c
1628 *) Use SHA-1 instead of MD5 as the default digest algorithm for
1629 the apps/openssl applications.
1632 *) Compile clean with "-Wall -Wmissing-prototypes
1633 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
1634 DEBUG_SAFESTACK must also be set.
1637 *) Change ./Configure so that certain algorithms can be disabled by default.
1638 The new counterpiece to "no-xxx" is "enable-xxx".
1640 The patented RC5 and MDC2 algorithms will now be disabled unless
1641 "enable-rc5" and "enable-mdc2", respectively, are specified.
1643 (IDEA remains enabled despite being patented. This is because IDEA
1644 is frequently required for interoperability, and there is no license
1645 fee for non-commercial use. As before, "no-idea" can be used to
1646 avoid this algorithm.)
1650 *) Add processing of proxy certificates (see RFC 3820). This work was
1651 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
1652 EGEE (Enabling Grids for E-science in Europe).
1655 *) RC4 performance overhaul on modern architectures/implementations, such
1656 as Intel P4, IA-64 and AMD64.
1659 *) New utility extract-section.pl. This can be used specify an alternative
1660 section number in a pod file instead of having to treat each file as
1661 a separate case in Makefile. This can be done by adding two lines to the
1664 =for comment openssl_section:XXX
1666 The blank line is mandatory.
1670 *) New arguments -certform, -keyform and -pass for s_client and s_server
1671 to allow alternative format key and certificate files and passphrase
1675 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
1676 update associated structures and add various utility functions.
1678 Add new policy related verify parameters, include policy checking in
1679 standard verify code. Enhance 'smime' application with extra parameters
1680 to support policy checking and print out.
1683 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
1684 Nehemiah processors. These extensions support AES encryption in hardware
1685 as well as RNG (though RNG support is currently disabled).
1686 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
1688 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
1691 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
1692 [Andy Polyakov and a number of other people]
1694 *) Improved PowerPC platform support. Most notably BIGNUM assembler
1695 implementation contributed by IBM.
1696 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
1698 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
1699 exponent rather than 'unsigned long'. There is a corresponding change to
1700 the new 'rsa_keygen' element of the RSA_METHOD structure.
1701 [Jelte Jansen, Geoff Thorpe]
1703 *) Functionality for creating the initial serial number file is now
1704 moved from CA.pl to the 'ca' utility with a new option -create_serial.
1706 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
1707 number file to 1, which is bound to cause problems. To avoid
1708 the problems while respecting compatibility between different 0.9.7
1709 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
1710 CA.pl for serial number initialization. With the new release 0.9.8,
1711 we can fix the problem directly in the 'ca' utility.)
1714 *) Reduced header interdepencies by declaring more opaque objects in
1715 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
1716 give fewer recursive includes, which could break lazy source code - so
1717 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
1718 developers should define this symbol when building and using openssl to
1719 ensure they track the recommended behaviour, interfaces, [etc], but
1720 backwards-compatible behaviour prevails when this isn't defined.
1723 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
1726 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
1727 This will generate a random key of the appropriate length based on the
1728 cipher context. The EVP_CIPHER can provide its own random key generation
1729 routine to support keys of a specific form. This is used in the des and
1730 3des routines to generate a key of the correct parity. Update S/MIME
1731 code to use new functions and hence generate correct parity DES keys.
1732 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
1733 valid (weak or incorrect parity).
1736 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
1737 as looking them up. This is useful when the verified structure may contain
1738 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
1739 present unless the new PKCS7_NO_CRL flag is asserted.
1742 *) Extend ASN1 oid configuration module. It now additionally accepts the
1745 shortName = some long name, 1.2.3.4
1748 *) Reimplemented the BN_CTX implementation. There is now no more static
1749 limitation on the number of variables it can handle nor the depth of the
1750 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
1751 information can now expand as required, and rather than having a single
1752 static array of bignums, BN_CTX now uses a linked-list of such arrays
1753 allowing it to expand on demand whilst maintaining the usefulness of
1754 BN_CTX's "bundling".
1757 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
1758 to allow all RSA operations to function using a single BN_CTX.
1761 *) Preliminary support for certificate policy evaluation and checking. This
1762 is initially intended to pass the tests outlined in "Conformance Testing
1763 of Relying Party Client Certificate Path Processing Logic" v1.07.
1766 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
1767 remained unused and not that useful. A variety of other little bignum
1768 tweaks and fixes have also been made continuing on from the audit (see
1772 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
1773 associated ASN1, EVP and SSL functions and old ASN1 macros.
1776 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
1777 and this should never fail. So the return value from the use of
1778 BN_set_word() (which can fail due to needless expansion) is now deprecated;
1779 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
1782 *) BN_CTX_get() should return zero-valued bignums, providing the same
1783 initialised value as BN_new().
1784 [Geoff Thorpe, suggested by Ulf Möller]
1786 *) Support for inhibitAnyPolicy certificate extension.
1789 *) An audit of the BIGNUM code is underway, for which debugging code is
1790 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
1791 is considered valid when processing BIGNUMs, and causes execution to
1792 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
1793 further steps are taken to deliberately pollute unused data in BIGNUM
1794 structures to try and expose faulty code further on. For now, openssl will
1795 (in its default mode of operation) continue to tolerate the inconsistent
1796 forms that it has tolerated in the past, but authors and packagers should
1797 consider trying openssl and their own applications when compiled with
1798 these debugging symbols defined. It will help highlight potential bugs in
1799 their own code, and will improve the test coverage for OpenSSL itself. At
1800 some point, these tighter rules will become openssl's default to improve
1801 maintainability, though the assert()s and other overheads will remain only
1802 in debugging configurations. See bn.h for more details.
1803 [Geoff Thorpe, Nils Larsch, Ulf Möller]
1805 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
1806 that can only be obtained through BN_CTX_new() (which implicitly
1807 initialises it). The presence of this function only made it possible
1808 to overwrite an existing structure (and cause memory leaks).
1811 *) Because of the callback-based approach for implementing LHASH as a
1812 template type, lh_insert() adds opaque objects to hash-tables and
1813 lh_doall() or lh_doall_arg() are typically used with a destructor callback
1814 to clean up those corresponding objects before destroying the hash table
1815 (and losing the object pointers). So some over-zealous constifications in
1816 LHASH have been relaxed so that lh_insert() does not take (nor store) the
1817 objects as "const" and the lh_doall[_arg] callback wrappers are not
1818 prototyped to have "const" restrictions on the object pointers they are
1819 given (and so aren't required to cast them away any more).
1822 *) The tmdiff.h API was so ugly and minimal that our own timing utility
1823 (speed) prefers to use its own implementation. The two implementations
1824 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
1825 its object type properly exposed (MS_TM) instead of casting to/from "char
1826 *". This may still change yet if someone realises MS_TM and "ms_time_***"
1827 aren't necessarily the greatest nomenclatures - but this is what was used
1828 internally to the implementation so I've used that for now.
1831 *) Ensure that deprecated functions do not get compiled when
1832 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
1833 the self-tests were still using deprecated key-generation functions so
1834 these have been updated also.
1837 *) Reorganise PKCS#7 code to separate the digest location functionality
1838 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
1839 New function PKCS7_set_digest() to set the digest type for PKCS#7
1840 digestedData type. Add additional code to correctly generate the
1841 digestedData type and add support for this type in PKCS7 initialization
1845 *) New function PKCS7_set0_type_other() this initializes a PKCS7
1846 structure of type "other".
1849 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
1850 sure the loop does correctly stop and breaking ("division by zero")
1851 modulus operations are not performed. The (pre-generated) prime
1852 table crypto/bn/bn_prime.h was already correct, but it could not be
1853 re-generated on some platforms because of the "division by zero"
1854 situation in the script.
1855 [Ralf S. Engelschall]
1857 *) Update support for ECC-based TLS ciphersuites according to
1858 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
1859 SHA-1 now is only used for "small" curves (where the
1860 representation of a field element takes up to 24 bytes); for
1861 larger curves, the field element resulting from ECDH is directly
1862 used as premaster secret.
1863 [Douglas Stebila (Sun Microsystems Laboratories)]
1865 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
1866 curve secp160r1 to the tests.
1867 [Douglas Stebila (Sun Microsystems Laboratories)]
1869 *) Add the possibility to load symbols globally with DSO.
1870 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
1872 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
1873 control of the error stack.
1876 *) Add support for STORE in ENGINE.
1879 *) Add the STORE type. The intention is to provide a common interface
1880 to certificate and key stores, be they simple file-based stores, or
1881 HSM-type store, or LDAP stores, or...
1882 NOTE: The code is currently UNTESTED and isn't really used anywhere.
1885 *) Add a generic structure called OPENSSL_ITEM. This can be used to
1886 pass a list of arguments to any function as well as provide a way
1887 for a function to pass data back to the caller.
1890 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
1891 works like BUF_strdup() but can be used to duplicate a portion of
1892 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
1896 *) Add the function sk_find_ex() which works like sk_find(), but will
1897 return an index to an element even if an exact match couldn't be
1898 found. The index is guaranteed to point at the element where the
1899 searched-for key would be inserted to preserve sorting order.
1902 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
1903 takes an extra flags argument for optional functionality. Currently,
1904 the following flags are defined:
1906 OBJ_BSEARCH_VALUE_ON_NOMATCH
1907 This one gets OBJ_bsearch_ex() to return a pointer to the first
1908 element where the comparing function returns a negative or zero
1911 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
1912 This one gets OBJ_bsearch_ex() to return a pointer to the first
1913 element where the comparing function returns zero. This is useful
1914 if there are more than one element where the comparing function
1918 *) Make it possible to create self-signed certificates with 'openssl ca'
1919 in such a way that the self-signed certificate becomes part of the
1920 CA database and uses the same mechanisms for serial number generation
1921 as all other certificate signing. The new flag '-selfsign' enables
1922 this functionality. Adapt CA.sh and CA.pl.in.
1925 *) Add functionality to check the public key of a certificate request
1926 against a given private. This is useful to check that a certificate
1927 request can be signed by that key (self-signing).
1930 *) Make it possible to have multiple active certificates with the same
1931 subject in the CA index file. This is done only if the keyword
1932 'unique_subject' is set to 'no' in the main CA section (default
1933 if 'CA_default') of the configuration file. The value is saved
1934 with the database itself in a separate index attribute file,
1935 named like the index file with '.attr' appended to the name.
1938 *) Generate muti valued AVAs using '+' notation in config files for
1942 *) Support for nameConstraints certificate extension.
1945 *) Support for policyConstraints certificate extension.
1948 *) Support for policyMappings certificate extension.
1951 *) Make sure the default DSA_METHOD implementation only uses its
1952 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
1953 and change its own handlers to be NULL so as to remove unnecessary
1954 indirection. This lets alternative implementations fallback to the
1955 default implementation more easily.
1958 *) Support for directoryName in GeneralName related extensions
1962 *) Make it possible to link applications using Makefile.shared.
1963 Make that possible even when linking against static libraries!
1966 *) Support for single pass processing for S/MIME signing. This now
1967 means that S/MIME signing can be done from a pipe, in addition
1968 cleartext signing (multipart/signed type) is effectively streaming
1969 and the signed data does not need to be all held in memory.
1971 This is done with a new flag PKCS7_STREAM. When this flag is set
1972 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
1973 is done after the data is output (and digests calculated) in
1974 SMIME_write_PKCS7().
1977 *) Add full support for -rpath/-R, both in shared libraries and
1978 applications, at least on the platforms where it's known how
1982 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
1983 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
1984 will now compute a table of multiples of the generator that
1985 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
1986 faster (notably in the case of a single point multiplication,
1987 scalar * generator).
1988 [Nils Larsch, Bodo Moeller]
1990 *) IPv6 support for certificate extensions. The various extensions
1991 which use the IP:a.b.c.d can now take IPv6 addresses using the
1992 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
1996 *) Added an ENGINE that implements RSA by performing private key
1997 exponentiations with the GMP library. The conversions to and from
1998 GMP's mpz_t format aren't optimised nor are any montgomery forms
1999 cached, and on x86 it appears OpenSSL's own performance has caught up.
2000 However there are likely to be other architectures where GMP could
2001 provide a boost. This ENGINE is not built in by default, but it can be
2002 specified at Configure time and should be accompanied by the necessary
2003 linker additions, eg;
2004 ./config -DOPENSSL_USE_GMP -lgmp
2007 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2008 testing availability of engines with "-t" - the old behaviour is
2009 produced by increasing the feature's verbosity with "-tt".
2012 *) ECDSA routines: under certain error conditions uninitialized BN objects
2013 could be freed. Solution: make sure initialization is performed early
2014 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2018 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2019 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2020 software implementations. For DSA and DH, parameter generation can
2021 also be overriden by providing the appropriate method callbacks.
2024 *) Change the "progress" mechanism used in key-generation and
2025 primality testing to functions that take a new BN_GENCB pointer in
2026 place of callback/argument pairs. The new API functions have "_ex"
2027 postfixes and the older functions are reimplemented as wrappers for
2028 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2029 declarations of the old functions to help (graceful) attempts to
2030 migrate to the new functions. Also, the new key-generation API
2031 functions operate on a caller-supplied key-structure and return
2032 success/failure rather than returning a key or NULL - this is to
2033 help make "keygen" another member function of RSA_METHOD etc.
2035 Example for using the new callback interface:
2037 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2041 BN_GENCB_set(&my_cb, my_callback, my_arg);
2043 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2044 /* For the meaning of a, b in calls to my_callback(), see the
2045 * documentation of the function that calls the callback.
2046 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2047 * my_callback should return 1 if it wants BN_is_prime_ex()
2048 * to continue, or 0 to stop.
2053 *) Change the ZLIB compression method to be stateful, and make it
2054 available to TLS with the number defined in
2055 draft-ietf-tls-compression-04.txt.
2058 *) Add the ASN.1 structures and functions for CertificatePair, which
2059 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2061 CertificatePair ::= SEQUENCE {
2062 forward [0] Certificate OPTIONAL,
2063 reverse [1] Certificate OPTIONAL,
2064 -- at least one of the pair shall be present -- }
2066 Also implement the PEM functions to read and write certificate
2067 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2069 This needed to be defined, mostly for the sake of the LDAP
2070 attribute crossCertificatePair, but may prove useful elsewhere as
2074 *) Make it possible to inhibit symlinking of shared libraries in
2075 Makefile.shared, for Cygwin's sake.
2078 *) Extend the BIGNUM API by creating a function
2079 void BN_set_negative(BIGNUM *a, int neg);
2080 and a macro that behave like
2081 int BN_is_negative(const BIGNUM *a);
2083 to avoid the need to access 'a->neg' directly in applications.
2086 *) Implement fast modular reduction for pseudo-Mersenne primes
2087 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2088 EC_GROUP_new_curve_GFp() will now automatically use this
2090 [Nils Larsch <nla@trustcenter.de>]
2092 *) Add new lock type (CRYPTO_LOCK_BN).
2095 *) Change the ENGINE framework to automatically load engines
2096 dynamically from specific directories unless they could be
2097 found to already be built in or loaded. Move all the
2098 current engines except for the cryptodev one to a new
2100 The engines in engines/ are built as shared libraries if
2101 the "shared" options was given to ./Configure or ./config.
2102 Otherwise, they are inserted in libcrypto.a.
2103 /usr/local/ssl/engines is the default directory for dynamic
2104 engines, but that can be overriden at configure time through
2105 the usual use of --prefix and/or --openssldir, and at run
2106 time with the environment variable OPENSSL_ENGINES.
2107 [Geoff Thorpe and Richard Levitte]
2109 *) Add Makefile.shared, a helper makefile to build shared
2110 libraries. Addapt Makefile.org.
2113 *) Add version info to Win32 DLLs.
2114 [Peter 'Luna' Runestig" <peter@runestig.com>]
2116 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2117 can be added using this API to created arbitrary PKCS#12
2118 files while avoiding the low level API.
2120 New options to PKCS12_create(), key or cert can be NULL and
2121 will then be omitted from the output file. The encryption
2122 algorithm NIDs can be set to -1 for no encryption, the mac
2123 iteration count can be set to 0 to omit the mac.
2125 Enhance pkcs12 utility by making the -nokeys and -nocerts
2126 options work when creating a PKCS#12 file. New option -nomac
2127 to omit the mac, NONE can be set for an encryption algorithm.
2128 New code is modified to use the enhanced PKCS12_create()
2129 instead of the low level API.
2132 *) Extend ASN1 encoder to support indefinite length constructed
2133 encoding. This can output sequences tags and octet strings in
2134 this form. Modify pk7_asn1.c to support indefinite length
2135 encoding. This is experimental and needs additional code to
2136 be useful, such as an ASN1 bio and some enhanced streaming
2139 Extend template encode functionality so that tagging is passed
2140 down to the template encoder.
2143 *) Let 'openssl req' fail if an argument to '-newkey' is not
2144 recognized instead of using RSA as a default.
2147 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2148 As these are not official, they are not included in "ALL";
2149 the "ECCdraft" ciphersuite group alias can be used to select them.
2150 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2152 *) Add ECDH engine support.
2153 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2155 *) Add ECDH in new directory crypto/ecdh/.
2156 [Douglas Stebila (Sun Microsystems Laboratories)]
2158 *) Let BN_rand_range() abort with an error after 100 iterations
2159 without success (which indicates a broken PRNG).
2162 *) Change BN_mod_sqrt() so that it verifies that the input value
2163 is really the square of the return value. (Previously,
2164 BN_mod_sqrt would show GIGO behaviour.)
2167 *) Add named elliptic curves over binary fields from X9.62, SECG,
2168 and WAP/WTLS; add OIDs that were still missing.
2170 [Sheueling Chang Shantz and Douglas Stebila
2171 (Sun Microsystems Laboratories)]
2173 *) Extend the EC library for elliptic curves over binary fields
2174 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2177 EC_GF2m_simple_method
2181 EC_GROUP_new_curve_GF2m
2182 EC_GROUP_set_curve_GF2m
2183 EC_GROUP_get_curve_GF2m
2184 EC_POINT_set_affine_coordinates_GF2m
2185 EC_POINT_get_affine_coordinates_GF2m
2186 EC_POINT_set_compressed_coordinates_GF2m
2188 Point compression for binary fields is disabled by default for
2189 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2192 As binary polynomials are represented as BIGNUMs, various members
2193 of the EC_GROUP and EC_POINT data structures can be shared
2194 between the implementations for prime fields and binary fields;
2195 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2196 are essentially identical to their ..._GFp counterparts.
2197 (For simplicity, the '..._GFp' prefix has been dropped from
2198 various internal method names.)
2200 An internal 'field_div' method (similar to 'field_mul' and
2201 'field_sqr') has been added; this is used only for binary fields.
2203 [Sheueling Chang Shantz and Douglas Stebila
2204 (Sun Microsystems Laboratories)]
2206 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2207 through methods ('mul', 'precompute_mult').
2209 The generic implementations (now internally called 'ec_wNAF_mul'
2210 and 'ec_wNAF_precomputed_mult') remain the default if these
2211 methods are undefined.
2213 [Sheueling Chang Shantz and Douglas Stebila
2214 (Sun Microsystems Laboratories)]
2216 *) New function EC_GROUP_get_degree, which is defined through
2217 EC_METHOD. For curves over prime fields, this returns the bit
2218 length of the modulus.
2220 [Sheueling Chang Shantz and Douglas Stebila
2221 (Sun Microsystems Laboratories)]
2223 *) New functions EC_GROUP_dup, EC_POINT_dup.
2224 (These simply call ..._new and ..._copy).
2226 [Sheueling Chang Shantz and Douglas Stebila
2227 (Sun Microsystems Laboratories)]
2229 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2230 Polynomials are represented as BIGNUMs (where the sign bit is not
2231 used) in the following functions [macros]:
2234 BN_GF2m_sub [= BN_GF2m_add]
2235 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2236 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2237 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2239 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2240 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2241 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2242 BN_GF2m_cmp [= BN_ucmp]
2244 (Note that only the 'mod' functions are actually for fields GF(2^m).
2245 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2247 For some functions, an the irreducible polynomial defining a
2248 field can be given as an 'unsigned int[]' with strictly
2249 decreasing elements giving the indices of those bits that are set;
2250 i.e., p[] represents the polynomial
2251 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2253 p[0] > p[1] > ... > p[k] = 0.
2254 This applies to the following functions:
2259 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2260 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2262 BN_GF2m_mod_sqrt_arr
2263 BN_GF2m_mod_solve_quad_arr
2267 Conversion can be performed by the following functions:
2272 bntest.c has additional tests for binary polynomial arithmetic.
2274 Two implementations for BN_GF2m_mod_div() are available.
2275 The default algorithm simply uses BN_GF2m_mod_inv() and
2276 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2277 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2278 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2280 [Sheueling Chang Shantz and Douglas Stebila
2281 (Sun Microsystems Laboratories)]
2283 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2284 functionality is disabled at compile-time.
2285 [Douglas Stebila <douglas.stebila@sun.com>]
2287 *) Change default behaviour of 'openssl asn1parse' so that more
2288 information is visible when viewing, e.g., a certificate:
2290 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2291 mode the content of non-printable OCTET STRINGs is output in a
2292 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2293 avoid the appearance of a printable string.
2294 [Nils Larsch <nla@trustcenter.de>]
2296 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2298 EC_GROUP_set_asn1_flag()
2299 EC_GROUP_get_asn1_flag()
2300 EC_GROUP_set_point_conversion_form()
2301 EC_GROUP_get_point_conversion_form()
2302 These control ASN1 encoding details:
2303 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2304 has been set to OPENSSL_EC_NAMED_CURVE.
2305 - Points are encoded in uncompressed form by default; options for
2306 asn1_for are as for point2oct, namely
2307 POINT_CONVERSION_COMPRESSED
2308 POINT_CONVERSION_UNCOMPRESSED
2309 POINT_CONVERSION_HYBRID
2311 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2314 EC_GROUP_get0_seed()
2315 EC_GROUP_get_seed_len()
2316 This is used only for ASN1 purposes (so far).
2317 [Nils Larsch <nla@trustcenter.de>]
2319 *) Add 'field_type' member to EC_METHOD, which holds the NID
2320 of the appropriate field type OID. The new function
2321 EC_METHOD_get_field_type() returns this value.
2322 [Nils Larsch <nla@trustcenter.de>]
2327 EC_POINT_point2hex()
2328 EC_POINT_hex2point()
2329 providing useful interfaces to EC_POINT_point2oct() and
2330 EC_POINT_oct2point().
2331 [Nils Larsch <nla@trustcenter.de>]
2333 *) Change internals of the EC library so that the functions
2334 EC_GROUP_set_generator()
2335 EC_GROUP_get_generator()
2336 EC_GROUP_get_order()
2337 EC_GROUP_get_cofactor()
2338 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2339 to methods, which would lead to unnecessary code duplication when
2340 adding different types of curves.
2341 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2343 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2344 arithmetic, and such that modified wNAFs are generated
2345 (which avoid length expansion in many cases).
2348 *) Add a function EC_GROUP_check_discriminant() (defined via
2349 EC_METHOD) that verifies that the curve discriminant is non-zero.
2351 Add a function EC_GROUP_check() that makes some sanity tests
2352 on a EC_GROUP, its generator and order. This includes
2353 EC_GROUP_check_discriminant().
2354 [Nils Larsch <nla@trustcenter.de>]
2356 *) Add ECDSA in new directory crypto/ecdsa/.
2358 Add applications 'openssl ecparam' and 'openssl ecdsa'
2359 (these are based on 'openssl dsaparam' and 'openssl dsa').
2361 ECDSA support is also included in various other files across the
2362 library. Most notably,
2363 - 'openssl req' now has a '-newkey ecdsa:file' option;
2364 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2365 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2366 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2367 them suitable for ECDSA where domain parameters must be
2368 extracted before the specific public key;
2369 - ECDSA engine support has been added.
2370 [Nils Larsch <nla@trustcenter.de>]
2372 *) Include some named elliptic curves, and add OIDs from X9.62,
2373 SECG, and WAP/WTLS. Each curve can be obtained from the new
2375 EC_GROUP_new_by_curve_name(),
2376 and the list of available named curves can be obtained with
2377 EC_get_builtin_curves().
2378 Also add a 'curve_name' member to EC_GROUP objects, which can be
2380 EC_GROUP_set_curve_name()
2381 EC_GROUP_get_curve_name()
2382 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2384 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2385 was actually never needed) and in BN_mul(). The removal in BN_mul()
2386 required a small change in bn_mul_part_recursive() and the addition
2387 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2388 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2389 bn_sub_words() and bn_add_words() except they take arrays with
2393 Changes between 0.9.7m and 0.9.7n [xx XXX xxxx]
2395 *) In the SSL/TLS server implementation, be strict about session ID
2396 context matching (which matters if an application uses a single
2397 external cache for different purposes). Previously,
2398 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2399 set. This did ensure strict client verification, but meant that,
2400 with applications using a single external cache for quite
2401 different requirements, clients could circumvent ciphersuite
2402 restrictions for a given session ID context by starting a session
2403 in a different context.
2406 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2408 *) Cleanse PEM buffers before freeing them since they may contain
2410 [Benjamin Bennett <ben@psc.edu>]
2412 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2413 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2414 authentication-only ciphersuites.
2417 *) Since AES128 and AES256 share a single mask bit in the logic of
2418 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2419 kludge to work properly if AES128 is available and AES256 isn't.
2422 *) Expand security boundary to match 1.1.1 module.
2425 *) Remove redundant features: hash file source, editing of test vectors
2426 modify fipsld to use external fips_premain.c signature.
2429 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2430 run algorithm test programs.
2433 *) Make algorithm test programs more tolerant of whitespace.
2436 *) Have SSL/TLS server implementation tolerate "mismatched" record
2437 protocol version while receiving ClientHello even if the
2438 ClientHello is fragmented. (The server can't insist on the
2439 particular protocol version it has chosen before the ServerHello
2440 message has informed the client about his choice.)
2443 *) Load error codes if they are not already present instead of using a
2444 static variable. This allows them to be cleanly unloaded and reloaded.
2447 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2449 *) Introduce limits to prevent malicious keys being able to
2450 cause a denial of service. (CVE-2006-2940)
2451 [Steve Henson, Bodo Moeller]
2453 *) Fix ASN.1 parsing of certain invalid structures that can result
2454 in a denial of service. (CVE-2006-2937) [Steve Henson]
2456 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2457 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2459 *) Fix SSL client code which could crash if connecting to a
2460 malicious SSLv2 server. (CVE-2006-4343)
2461 [Tavis Ormandy and Will Drewry, Google Security Team]
2463 *) Change ciphersuite string processing so that an explicit
2464 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
2465 will no longer include "AES128-SHA"), and any other similar
2466 ciphersuite (same bitmap) from *other* protocol versions (so that
2467 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
2468 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
2469 changes from 0.9.8b and 0.9.8d.
2472 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
2474 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2475 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2477 *) Change the Unix randomness entropy gathering to use poll() when
2478 possible instead of select(), since the latter has some
2479 undesirable limitations.
2480 [Darryl Miles via Richard Levitte and Bodo Moeller]
2482 *) Disable rogue ciphersuites:
2484 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2485 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2486 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2488 The latter two were purportedly from
2489 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2492 Also deactive the remaining ciphersuites from
2493 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2494 unofficial, and the ID has long expired.
2497 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2498 dual-core machines) and other potential thread-safety issues.
2501 Changes between 0.9.7i and 0.9.7j [04 May 2006]
2503 *) Adapt fipsld and the build system to link against the validated FIPS
2504 module in FIPS mode.
2507 *) Fixes for VC++ 2005 build under Windows.
2510 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
2511 from a Windows bash shell such as MSYS. It is autodetected from the
2512 "config" script when run from a VC++ environment. Modify standard VC++
2513 build to use fipscanister.o from the GNU make build.
2516 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
2518 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
2519 The value now differs depending on if you build for FIPS or not.
2520 BEWARE! A program linked with a shared FIPSed libcrypto can't be
2521 safely run with a non-FIPSed libcrypto, as it may crash because of
2522 the difference induced by this change.
2525 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
2527 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2528 (part of SSL_OP_ALL). This option used to disable the
2529 countermeasure against man-in-the-middle protocol-version
2530 rollback in the SSL 2.0 server implementation, which is a bad
2531 idea. (CVE-2005-2969)
2533 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2534 for Information Security, National Institute of Advanced Industrial
2535 Science and Technology [AIST], Japan)]
2537 *) Minimal support for X9.31 signatures and PSS padding modes. This is
2538 mainly for FIPS compliance and not fully integrated at this stage.
2541 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
2542 the exponentiation using a fixed-length exponent. (Otherwise,
2543 the information leaked through timing could expose the secret key
2544 after many signatures; cf. Bleichenbacher's attack on DSA with
2548 *) Make a new fixed-window mod_exp implementation the default for
2549 RSA, DSA, and DH private-key operations so that the sequence of
2550 squares and multiplies and the memory access pattern are
2551 independent of the particular secret key. This will mitigate
2552 cache-timing and potential related attacks.
2554 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
2555 and this is automatically used by BN_mod_exp_mont() if the new flag
2556 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
2557 will use this BN flag for private exponents unless the flag
2558 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
2559 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
2561 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
2563 *) Change the client implementation for SSLv23_method() and
2564 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
2565 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
2566 (Previously, the SSL 2.0 backwards compatible Client Hello
2567 message format would be used even with SSL_OP_NO_SSLv2.)
2570 *) Add support for smime-type MIME parameter in S/MIME messages which some
2574 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
2575 a threadsafe manner. Modify rsa code to use new function and add calls
2576 to dsa and dh code (which had race conditions before).
2579 *) Include the fixed error library code in the C error file definitions
2580 instead of fixing them up at runtime. This keeps the error code
2581 structures constant.
2584 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
2586 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
2589 *) Fixes for newer kerberos headers. NB: the casts are needed because
2590 the 'length' field is signed on one version and unsigned on another
2591 with no (?) obvious way to tell the difference, without these VC++
2592 complains. Also the "definition" of FAR (blank) is no longer included
2593 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
2594 some needed definitions.
2597 *) Undo Cygwin change.
2600 *) Added support for proxy certificates according to RFC 3820.
2601 Because they may be a security thread to unaware applications,
2602 they must be explicitely allowed in run-time. See
2603 docs/HOWTO/proxy_certificates.txt for further information.
2606 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
2608 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
2609 server and client random values. Previously
2610 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
2611 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
2613 This change has negligible security impact because:
2615 1. Server and client random values still have 24 bytes of pseudo random
2618 2. Server and client random values are sent in the clear in the initial
2621 3. The master secret is derived using the premaster secret (48 bytes in
2622 size for static RSA ciphersuites) as well as client server and random
2625 The OpenSSL team would like to thank the UK NISCC for bringing this issue
2628 [Stephen Henson, reported by UK NISCC]
2630 *) Use Windows randomness collection on Cygwin.
2633 *) Fix hang in EGD/PRNGD query when communication socket is closed
2634 prematurely by EGD/PRNGD.
2635 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
2637 *) Prompt for pass phrases when appropriate for PKCS12 input format.
2640 *) Back-port of selected performance improvements from development
2641 branch, as well as improved support for PowerPC platforms.
2644 *) Add lots of checks for memory allocation failure, error codes to indicate
2645 failure and freeing up memory if a failure occurs.
2646 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
2648 *) Add new -passin argument to dgst.
2651 *) Perform some character comparisons of different types in X509_NAME_cmp:
2652 this is needed for some certificates that reencode DNs into UTF8Strings
2653 (in violation of RFC3280) and can't or wont issue name rollover
2657 *) Make an explicit check during certificate validation to see that
2658 the CA setting in each certificate on the chain is correct. As a
2659 side effect always do the following basic checks on extensions,
2660 not just when there's an associated purpose to the check:
2662 - if there is an unhandled critical extension (unless the user
2663 has chosen to ignore this fault)
2664 - if the path length has been exceeded (if one is set at all)
2665 - that certain extensions fit the associated purpose (if one has
2669 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
2671 *) Avoid a race condition when CRLs are checked in a multi threaded
2672 environment. This would happen due to the reordering of the revoked
2673 entries during signature checking and serial number lookup. Now the
2674 encoding is cached and the serial number sort performed under a lock.
2675 Add new STACK function sk_is_sorted().
2678 *) Add Delta CRL to the extension code.
2681 *) Various fixes to s3_pkt.c so alerts are sent properly.
2682 [David Holmes <d.holmes@f5.com>]
2684 *) Reduce the chances of duplicate issuer name and serial numbers (in
2685 violation of RFC3280) using the OpenSSL certificate creation utilities.
2686 This is done by creating a random 64 bit value for the initial serial
2687 number when a serial number file is created or when a self signed
2688 certificate is created using 'openssl req -x509'. The initial serial
2689 number file is created using 'openssl x509 -next_serial' in CA.pl
2690 rather than being initialized to 1.
2693 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
2695 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
2696 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
2697 [Joe Orton, Steve Henson]
2699 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
2701 [Joe Orton, Steve Henson]
2703 *) Make it possible to have multiple active certificates with the same
2704 subject in the CA index file. This is done only if the keyword
2705 'unique_subject' is set to 'no' in the main CA section (default
2706 if 'CA_default') of the configuration file. The value is saved
2707 with the database itself in a separate index attribute file,
2708 named like the index file with '.attr' appended to the name.
2711 *) X509 verify fixes. Disable broken certificate workarounds when
2712 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
2713 keyUsage extension present. Don't accept CRLs with unhandled critical
2714 extensions: since verify currently doesn't process CRL extensions this
2715 rejects a CRL with *any* critical extensions. Add new verify error codes
2719 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
2720 A clarification of RFC2560 will require the use of OCTET STRINGs and
2721 some implementations cannot handle the current raw format. Since OpenSSL
2722 copies and compares OCSP nonces as opaque blobs without any attempt at
2723 parsing them this should not create any compatibility issues.
2726 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
2727 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
2728 this HMAC (and other) operations are several times slower than OpenSSL
2732 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
2733 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
2735 *) Use the correct content when signing type "other".
2738 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
2740 *) Fix various bugs revealed by running the NISCC test suite:
2742 Stop out of bounds reads in the ASN1 code when presented with
2743 invalid tags (CVE-2003-0543 and CVE-2003-0544).
2745 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
2747 If verify callback ignores invalid public key errors don't try to check
2748 certificate signature with the NULL public key.
2752 *) New -ignore_err option in ocsp application to stop the server
2753 exiting on the first error in a request.
2756 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
2757 if the server requested one: as stated in TLS 1.0 and SSL 3.0
2761 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
2762 extra data after the compression methods not only for TLS 1.0
2763 but also for SSL 3.0 (as required by the specification).
2764 [Bodo Moeller; problem pointed out by Matthias Loepfe]
2766 *) Change X509_certificate_type() to mark the key as exported/exportable
2767 when it's 512 *bits* long, not 512 bytes.
2770 *) Change AES_cbc_encrypt() so it outputs exact multiple of
2771 blocks during encryption.
2774 *) Various fixes to base64 BIO and non blocking I/O. On write
2775 flushes were not handled properly if the BIO retried. On read
2776 data was not being buffered properly and had various logic bugs.
2777 This also affects blocking I/O when the data being decoded is a
2781 *) Various S/MIME bugfixes and compatibility changes:
2782 output correct application/pkcs7 MIME type if
2783 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
2784 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
2785 of files as .eml work). Correctly handle very long lines in MIME
2789 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
2791 *) Countermeasure against the Klima-Pokorny-Rosa extension of
2792 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
2793 a protocol version number mismatch like a decryption error
2794 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
2797 *) Turn on RSA blinding by default in the default implementation
2798 to avoid a timing attack. Applications that don't want it can call
2799 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
2800 They would be ill-advised to do so in most cases.
2801 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
2803 *) Change RSA blinding code so that it works when the PRNG is not
2804 seeded (in this case, the secret RSA exponent is abused as
2805 an unpredictable seed -- if it is not unpredictable, there
2806 is no point in blinding anyway). Make RSA blinding thread-safe
2807 by remembering the creator's thread ID in rsa->blinding and
2808 having all other threads use local one-time blinding factors
2809 (this requires more computation than sharing rsa->blinding, but
2810 avoids excessive locking; and if an RSA object is not shared
2811 between threads, blinding will still be very fast).
2814 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
2815 ENGINE as defaults for all supported algorithms irrespective of
2816 the 'flags' parameter. 'flags' is now honoured, so applications
2817 should make sure they are passing it correctly.
2820 *) Target "mingw" now allows native Windows code to be generated in
2821 the Cygwin environment as well as with the MinGW compiler.
2824 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
2826 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
2827 via timing by performing a MAC computation even if incorrrect
2828 block cipher padding has been found. This is a countermeasure
2829 against active attacks where the attacker has to distinguish
2830 between bad padding and a MAC verification error. (CVE-2003-0078)
2832 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
2833 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
2834 Martin Vuagnoux (EPFL, Ilion)]
2836 *) Make the no-err option work as intended. The intention with no-err
2837 is not to have the whole error stack handling routines removed from
2838 libcrypto, it's only intended to remove all the function name and
2839 reason texts, thereby removing some of the footprint that may not
2840 be interesting if those errors aren't displayed anyway.
2842 NOTE: it's still possible for any application or module to have it's
2843 own set of error texts inserted. The routines are there, just not
2844 used by default when no-err is given.
2847 *) Add support for FreeBSD on IA64.
2848 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
2850 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
2851 Kerberos function mit_des_cbc_cksum(). Before this change,
2852 the value returned by DES_cbc_cksum() was like the one from
2853 mit_des_cbc_cksum(), except the bytes were swapped.
2854 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
2856 *) Allow an application to disable the automatic SSL chain building.
2857 Before this a rather primitive chain build was always performed in
2858 ssl3_output_cert_chain(): an application had no way to send the
2859 correct chain if the automatic operation produced an incorrect result.
2861 Now the chain builder is disabled if either:
2863 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
2865 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
2867 The reasoning behind this is that an application would not want the
2868 auto chain building to take place if extra chain certificates are
2869 present and it might also want a means of sending no additional
2870 certificates (for example the chain has two certificates and the
2874 *) Add the possibility to build without the ENGINE framework.
2875 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
2877 *) Under Win32 gmtime() can return NULL: check return value in
2878 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
2881 *) DSA routines: under certain error conditions uninitialized BN objects
2882 could be freed. Solution: make sure initialization is performed early
2883 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
2884 Nils Larsch <nla@trustcenter.de> via PR#459)
2887 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
2888 checked on reconnect on the client side, therefore session resumption
2889 could still fail with a "ssl session id is different" error. This
2890 behaviour is masked when SSL_OP_ALL is used due to
2891 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
2892 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
2893 followup to PR #377.
2896 *) IA-32 assembler support enhancements: unified ELF targets, support
2897 for SCO/Caldera platforms, fix for Cygwin shared build.
2900 *) Add support for FreeBSD on sparc64. As a consequence, support for
2901 FreeBSD on non-x86 processors is separate from x86 processors on
2902 the config script, much like the NetBSD support.
2903 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
2905 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
2907 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
2910 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
2911 code (06) was taken as the first octet of the session ID and the last
2912 octet was ignored consequently. As a result SSLv2 client side session
2913 caching could not have worked due to the session ID mismatch between
2915 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
2919 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
2920 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
2924 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
2925 seems that in spite of existing for more than a year, many application
2926 author have done nothing to provide the necessary callbacks, which
2927 means that this particular engine will not work properly anywhere.
2928 This is a very unfortunate situation which forces us, in the name
2929 of usability, to give the hw_ncipher.c a static lock, which is part
2931 NOTE: This is for the 0.9.7 series ONLY. This hack will never
2932 appear in 0.9.8 or later. We EXPECT application authors to have
2933 dealt properly with this when 0.9.8 is released (unless we actually
2934 make such changes in the libcrypto locking code that changes will
2935 have to be made anyway).
2938 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
2939 octets have been read, EOF or an error occurs. Without this change
2940 some truncated ASN1 structures will not produce an error.
2943 *) Disable Heimdal support, since it hasn't been fully implemented.
2944 Still give the possibility to force the use of Heimdal, but with
2945 warnings and a request that patches get sent to openssl-dev.
2948 *) Add the VC-CE target, introduce the WINCE sysname, and add
2949 INSTALL.WCE and appropriate conditionals to make it build.
2950 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
2952 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
2953 cygssl-x.y.z.dll, where x, y and z are the major, minor and
2954 edit numbers of the version.
2955 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
2957 *) Introduce safe string copy and catenation functions
2958 (BUF_strlcpy() and BUF_strlcat()).
2959 [Ben Laurie (CHATS) and Richard Levitte]
2961 *) Avoid using fixed-size buffers for one-line DNs.
2962 [Ben Laurie (CHATS)]
2964 *) Add BUF_MEM_grow_clean() to avoid information leakage when
2965 resizing buffers containing secrets, and use where appropriate.
2966 [Ben Laurie (CHATS)]
2968 *) Avoid using fixed size buffers for configuration file location.
2969 [Ben Laurie (CHATS)]
2971 *) Avoid filename truncation for various CA files.
2972 [Ben Laurie (CHATS)]
2974 *) Use sizeof in preference to magic numbers.
2975 [Ben Laurie (CHATS)]
2977 *) Avoid filename truncation in cert requests.
2978 [Ben Laurie (CHATS)]
2980 *) Add assertions to check for (supposedly impossible) buffer
2982 [Ben Laurie (CHATS)]
2984 *) Don't cache truncated DNS entries in the local cache (this could
2985 potentially lead to a spoofing attack).
2986 [Ben Laurie (CHATS)]
2988 *) Fix various buffers to be large enough for hex/decimal
2989 representations in a platform independent manner.
2990 [Ben Laurie (CHATS)]
2992 *) Add CRYPTO_realloc_clean() to avoid information leakage when
2993 resizing buffers containing secrets, and use where appropriate.
2994 [Ben Laurie (CHATS)]
2996 *) Add BIO_indent() to avoid much slightly worrying code to do
2998 [Ben Laurie (CHATS)]
3000 *) Convert sprintf()/BIO_puts() to BIO_printf().
3001 [Ben Laurie (CHATS)]
3003 *) buffer_gets() could terminate with the buffer only half
3005 [Ben Laurie (CHATS)]
3007 *) Add assertions to prevent user-supplied crypto functions from
3008 overflowing internal buffers by having large block sizes, etc.
3009 [Ben Laurie (CHATS)]
3011 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3013 [Ben Laurie (CHATS)]
3015 *) Eliminate unused copy of key in RC4.
3016 [Ben Laurie (CHATS)]
3018 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3019 [Ben Laurie (CHATS)]
3021 *) Fix off-by-one error in EGD path.
3022 [Ben Laurie (CHATS)]
3024 *) If RANDFILE path is too long, ignore instead of truncating.
3025 [Ben Laurie (CHATS)]
3027 *) Eliminate unused and incorrectly sized X.509 structure
3029 [Ben Laurie (CHATS)]
3031 *) Eliminate unused and dangerous function knumber().
3032 [Ben Laurie (CHATS)]
3034 *) Eliminate unused and dangerous structure, KSSL_ERR.
3035 [Ben Laurie (CHATS)]
3037 *) Protect against overlong session ID context length in an encoded
3038 session object. Since these are local, this does not appear to be
3040 [Ben Laurie (CHATS)]
3042 *) Change from security patch (see 0.9.6e below) that did not affect
3043 the 0.9.6 release series:
3045 Remote buffer overflow in SSL3 protocol - an attacker could
3046 supply an oversized master key in Kerberos-enabled versions.
3048 [Ben Laurie (CHATS)]
3050 *) Change the SSL kerb5 codes to match RFC 2712.
3053 *) Make -nameopt work fully for req and add -reqopt switch.
3054 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3056 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3057 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3059 *) Make sure tests can be performed even if the corresponding algorithms
3060 have been removed entirely. This was also the last step to make
3061 OpenSSL compilable with DJGPP under all reasonable conditions.
3062 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3064 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3065 to allow version independent disabling of normally unselected ciphers,
3066 which may be activated as a side-effect of selecting a single cipher.
3068 (E.g., cipher list string "RSA" enables ciphersuites that are left
3069 out of "ALL" because they do not provide symmetric encryption.
3070 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3071 [Lutz Jaenicke, Bodo Moeller]
3073 *) Add appropriate support for separate platform-dependent build
3074 directories. The recommended way to make a platform-dependent
3075 build directory is the following (tested on Linux), maybe with
3078 # Place yourself outside of the OpenSSL source tree. In
3079 # this example, the environment variable OPENSSL_SOURCE
3080 # is assumed to contain the absolute OpenSSL source directory.
3081 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3082 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3083 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3084 mkdir -p `dirname $F`
3085 ln -s $OPENSSL_SOURCE/$F $F
3088 To be absolutely sure not to disturb the source tree, a "make clean"
3089 is a good thing. If it isn't successfull, don't worry about it,
3090 it probably means the source directory is very clean.
3093 *) Make sure any ENGINE control commands make local copies of string
3094 pointers passed to them whenever necessary. Otherwise it is possible
3095 the caller may have overwritten (or deallocated) the original string
3096 data when a later ENGINE operation tries to use the stored values.
3097 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3099 *) Improve diagnostics in file reading and command-line digests.
3100 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3102 *) Add AES modes CFB and OFB to the object database. Correct an
3103 error in AES-CFB decryption.
3106 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3107 allows existing EVP_CIPHER_CTX structures to be reused after
3108 calling EVP_*Final(). This behaviour is used by encryption
3109 BIOs and some applications. This has the side effect that
3110 applications must explicitly clean up cipher contexts with
3111 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3114 *) Check the values of dna and dnb in bn_mul_recursive before calling
3115 bn_mul_comba (a non zero value means the a or b arrays do not contain
3116 n2 elements) and fallback to bn_mul_normal if either is not zero.
3119 *) Fix escaping of non-ASCII characters when using the -subj option
3120 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3123 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3124 form for "surname", serialNumber has no short form.
3125 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3126 therefore remove "mail" short name for "internet 7".
3127 The OID for unique identifiers in X509 certificates is
3128 x500UniqueIdentifier, not uniqueIdentifier.
3129 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3132 *) Add an "init" command to the ENGINE config module and auto initialize
3133 ENGINEs. Without any "init" command the ENGINE will be initialized
3134 after all ctrl commands have been executed on it. If init=1 the
3135 ENGINE is initailized at that point (ctrls before that point are run
3136 on the uninitialized ENGINE and after on the initialized one). If
3137 init=0 then the ENGINE will not be iniatialized at all.
3140 *) Fix the 'app_verify_callback' interface so that the user-defined
3141 argument is actually passed to the callback: In the
3142 SSL_CTX_set_cert_verify_callback() prototype, the callback
3143 declaration has been changed from
3146 int (*cb)(X509_STORE_CTX *,void *);
3147 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3148 i=s->ctx->app_verify_callback(&ctx)
3149 has been changed into
3150 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3152 To update applications using SSL_CTX_set_cert_verify_callback(),
3153 a dummy argument can be added to their callback functions.
3154 [D. K. Smetters <smetters@parc.xerox.com>]
3156 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3157 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3159 *) Add and OPENSSL_LOAD_CONF define which will cause
3160 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3161 This allows older applications to transparently support certain
3162 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3163 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3164 load the config file and OPENSSL_add_all_algorithms_conf() which will
3165 always load it have also been added.
3168 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
3169 Adjust NIDs and EVP layer.
3170 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3172 *) Config modules support in openssl utility.
3174 Most commands now load modules from the config file,
3175 though in a few (such as version) this isn't done
3176 because it couldn't be used for anything.
3178 In the case of ca and req the config file used is
3179 the same as the utility itself: that is the -config
3180 command line option can be used to specify an
3184 *) Move default behaviour from OPENSSL_config(). If appname is NULL
3185 use "openssl_conf" if filename is NULL use default openssl config file.
3188 *) Add an argument to OPENSSL_config() to allow the use of an alternative
3189 config section name. Add a new flag to tolerate a missing config file
3190 and move code to CONF_modules_load_file().
3193 *) Support for crypto accelerator cards from Accelerated Encryption
3194 Processing, www.aep.ie. (Use engine 'aep')
3195 The support was copied from 0.9.6c [engine] and adapted/corrected
3196 to work with the new engine framework.
3197 [AEP Inc. and Richard Levitte]
3199 *) Support for SureWare crypto accelerator cards from Baltimore
3200 Technologies. (Use engine 'sureware')
3201 The support was copied from 0.9.6c [engine] and adapted
3202 to work with the new engine framework.
3205 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
3206 make the newer ENGINE framework commands for the CHIL engine work.
3207 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
3209 *) Make it possible to produce shared libraries on ReliantUNIX.
3210 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
3212 *) Add the configuration target debug-linux-ppro.
3213 Make 'openssl rsa' use the general key loading routines
3214 implemented in apps.c, and make those routines able to
3215 handle the key format FORMAT_NETSCAPE and the variant
3217 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3219 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3220 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3222 *) Add -keyform to rsautl, and document -engine.
3223 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3225 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3226 BIO_R_NO_SUCH_FILE error code rather than the generic
3227 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3230 *) Add new functions
3232 ERR_peek_last_error_line
3233 ERR_peek_last_error_line_data.
3234 These are similar to
3237 ERR_peek_error_line_data,
3238 but report on the latest error recorded rather than the first one
3239 still in the error queue.
3240 [Ben Laurie, Bodo Moeller]
3242 *) default_algorithms option in ENGINE config module. This allows things
3244 default_algorithms = ALL
3245 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3248 *) Prelminary ENGINE config module.
3251 *) New experimental application configuration code.
3254 *) Change the AES code to follow the same name structure as all other
3255 symmetric ciphers, and behave the same way. Move everything to
3256 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3257 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3259 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3260 [Ben Laurie and Theo de Raadt]
3262 *) Add option to output public keys in req command.
3263 [Massimiliano Pala madwolf@openca.org]
3265 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3266 (up to about 10% better than before for P-192 and P-224).
3269 *) New functions/macros
3271 SSL_CTX_set_msg_callback(ctx, cb)
3272 SSL_CTX_set_msg_callback_arg(ctx, arg)
3273 SSL_set_msg_callback(ssl, cb)
3274 SSL_set_msg_callback_arg(ssl, arg)
3276 to request calling a callback function
3278 void cb(int write_p, int version, int content_type,
3279 const void *buf, size_t len, SSL *ssl, void *arg)
3281 whenever a protocol message has been completely received
3282 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3283 protocol version according to which the SSL library interprets
3284 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3285 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3286 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3287 specification (change_cipher_spec(20), alert(21), handshake(22)).
3288 'buf' and 'len' point to the actual message, 'ssl' to the
3289 SSL object, and 'arg' is the application-defined value set by
3290 SSL[_CTX]_set_msg_callback_arg().
3292 'openssl s_client' and 'openssl s_server' have new '-msg' options
3293 to enable a callback that displays all protocol messages.
3296 *) Change the shared library support so shared libraries are built as
3297 soon as the corresponding static library is finished, and thereby get
3298 openssl and the test programs linked against the shared library.
3299 This still only happens when the keyword "shard" has been given to
3300 the configuration scripts.
3302 NOTE: shared library support is still an experimental thing, and
3303 backward binary compatibility is still not guaranteed.
3304 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3306 *) Add support for Subject Information Access extension.
3307 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3309 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3310 additional bytes when new memory had to be allocated, not just
3311 when reusing an existing buffer.
3314 *) New command line and configuration option 'utf8' for the req command.
3315 This allows field values to be specified as UTF8 strings.
3318 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3319 runs for the former and machine-readable output for the latter.
3322 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3323 of the e-mail address in the DN (i.e., it will go into a certificate
3324 extension only). The new configuration file option 'email_in_dn = no'
3325 has the same effect.
3326 [Massimiliano Pala madwolf@openca.org]
3328 *) Change all functions with names starting with des_ to be starting
3329 with DES_ instead. Add wrappers that are compatible with libdes,
3330 but are named _ossl_old_des_*. Finally, add macros that map the
3331 des_* symbols to the corresponding _ossl_old_des_* if libdes
3332 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3333 desired, the des_* symbols will be mapped to DES_*, with one
3336 Since we provide two compatibility mappings, the user needs to
3337 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3338 compatibility is desired. The default (i.e., when that macro
3339 isn't defined) is OpenSSL 0.9.6c compatibility.
3341 There are also macros that enable and disable the support of old
3342 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3343 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3344 are defined, the default will apply: to support the old des routines.
3346 In either case, one must include openssl/des.h to get the correct
3347 definitions. Do not try to just include openssl/des_old.h, that
3350 NOTE: This is a major break of an old API into a new one. Software
3351 authors are encouraged to switch to the DES_ style functions. Some
3352 time in the future, des_old.h and the libdes compatibility functions
3353 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
3354 default), and then completely removed.
3357 *) Test for certificates which contain unsupported critical extensions.
3358 If such a certificate is found during a verify operation it is
3359 rejected by default: this behaviour can be overridden by either
3360 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
3361 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
3362 X509_supported_extension() has also been added which returns 1 if a
3363 particular extension is supported.
3366 *) Modify the behaviour of EVP cipher functions in similar way to digests
3367 to retain compatibility with existing code.
3370 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
3371 compatibility with existing code. In particular the 'ctx' parameter does
3372 not have to be to be initialized before the call to EVP_DigestInit() and
3373 it is tidied up after a call to EVP_DigestFinal(). New function
3374 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
3375 EVP_MD_CTX_copy() changed to not require the destination to be
3376 initialized valid and new function EVP_MD_CTX_copy_ex() added which
3377 requires the destination to be valid.
3379 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
3380 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
3383 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
3384 so that complete 'Handshake' protocol structures are kept in memory
3385 instead of overwriting 'msg_type' and 'length' with 'body' data.
3388 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
3389 [Massimo Santin via Richard Levitte]
3391 *) Major restructuring to the underlying ENGINE code. This includes
3392 reduction of linker bloat, separation of pure "ENGINE" manipulation
3393 (initialisation, etc) from functionality dealing with implementations
3394 of specific crypto iterfaces. This change also introduces integrated
3395 support for symmetric ciphers and digest implementations - so ENGINEs
3396 can now accelerate these by providing EVP_CIPHER and EVP_MD
3397 implementations of their own. This is detailed in crypto/engine/README
3398 as it couldn't be adequately described here. However, there are a few
3399 API changes worth noting - some RSA, DSA, DH, and RAND functions that
3400 were changed in the original introduction of ENGINE code have now
3401 reverted back - the hooking from this code to ENGINE is now a good
3402 deal more passive and at run-time, operations deal directly with
3403 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
3404 dereferencing through an ENGINE pointer any more. Also, the ENGINE
3405 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
3406 they were not being used by the framework as there is no concept of a
3407 BIGNUM_METHOD and they could not be generalised to the new
3408 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
3409 ENGINE_cpy() has been removed as it cannot be consistently defined in
3413 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
3416 *) Change mkdef.pl to sort symbols that get the same entry number,
3417 and make sure the automatically generated functions ERR_load_*
3418 become part of libeay.num as well.
3421 *) New function SSL_renegotiate_pending(). This returns true once
3422 renegotiation has been requested (either SSL_renegotiate() call
3423 or HelloRequest/ClientHello receveived from the peer) and becomes
3424 false once a handshake has been completed.
3425 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
3426 sends a HelloRequest, but does not ensure that a handshake takes
3427 place. SSL_renegotiate_pending() is useful for checking if the
3428 client has followed the request.)
3431 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
3432 By default, clients may request session resumption even during
3433 renegotiation (if session ID contexts permit); with this option,
3434 session resumption is possible only in the first handshake.
3436 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
3437 more bits available for options that should not be part of
3438 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
3441 *) Add some demos for certificate and certificate request creation.
3444 *) Make maximum certificate chain size accepted from the peer application
3445 settable (SSL*_get/set_max_cert_list()), as proposed by
3446 "Douglas E. Engert" <deengert@anl.gov>.
3449 *) Add support for shared libraries for Unixware-7
3450 (Boyd Lynn Gerber <gerberb@zenez.com>).
3453 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
3454 be done prior to destruction. Use this to unload error strings from
3455 ENGINEs that load their own error strings. NB: This adds two new API
3456 functions to "get" and "set" this destroy handler in an ENGINE.
3459 *) Alter all existing ENGINE implementations (except "openssl" and
3460 "openbsd") to dynamically instantiate their own error strings. This
3461 makes them more flexible to be built both as statically-linked ENGINEs
3462 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
3463 Also, add stub code to each that makes building them as self-contained
3464 shared-libraries easier (see README.ENGINE).
3467 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
3468 implementations into applications that are completely implemented in
3469 self-contained shared-libraries. The "dynamic" ENGINE exposes control
3470 commands that can be used to configure what shared-library to load and
3471 to control aspects of the way it is handled. Also, made an update to
3472 the README.ENGINE file that brings its information up-to-date and
3473 provides some information and instructions on the "dynamic" ENGINE
3474 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
3477 *) Make it possible to unload ranges of ERR strings with a new
3478 "ERR_unload_strings" function.
3481 *) Add a copy() function to EVP_MD.
3484 *) Make EVP_MD routines take a context pointer instead of just the
3485 md_data void pointer.
3488 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
3489 that the digest can only process a single chunk of data
3490 (typically because it is provided by a piece of
3491 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
3492 is only going to provide a single chunk of data, and hence the
3493 framework needn't accumulate the data for oneshot drivers.
3496 *) As with "ERR", make it possible to replace the underlying "ex_data"
3497 functions. This change also alters the storage and management of global
3498 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
3499 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
3500 index counters. The API functions that use this state have been changed
3501 to take a "class_index" rather than pointers to the class's local STACK
3502 and counter, and there is now an API function to dynamically create new
3503 classes. This centralisation allows us to (a) plug a lot of the
3504 thread-safety problems that existed, and (b) makes it possible to clean
3505 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
3506 such data would previously have always leaked in application code and
3507 workarounds were in place to make the memory debugging turn a blind eye
3508 to it. Application code that doesn't use this new function will still
3509 leak as before, but their memory debugging output will announce it now
3510 rather than letting it slide.
3512 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
3513 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
3514 has a return value to indicate success or failure.
3517 *) Make it possible to replace the underlying "ERR" functions such that the
3518 global state (2 LHASH tables and 2 locks) is only used by the "default"
3519 implementation. This change also adds two functions to "get" and "set"
3520 the implementation prior to it being automatically set the first time
3521 any other ERR function takes place. Ie. an application can call "get",
3522 pass the return value to a module it has just loaded, and that module
3523 can call its own "set" function using that value. This means the
3524 module's "ERR" operations will use (and modify) the error state in the
3525 application and not in its own statically linked copy of OpenSSL code.
3528 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
3529 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
3530 the operation, and provides a more encapsulated way for external code
3531 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
3532 to use these functions rather than manually incrementing the counts.
3534 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
3537 *) Add EVP test program.
3540 *) Add symmetric cipher support to ENGINE. Expect the API to change!
3543 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
3544 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
3545 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
3546 These allow a CRL to be built without having to access X509_CRL fields
3547 directly. Modify 'ca' application to use new functions.
3550 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
3551 bug workarounds. Rollback attack detection is a security feature.
3552 The problem will only arise on OpenSSL servers when TLSv1 is not
3553 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
3554 Software authors not wanting to support TLSv1 will have special reasons
3555 for their choice and can explicitly enable this option.
3556 [Bodo Moeller, Lutz Jaenicke]
3558 *) Rationalise EVP so it can be extended: don't include a union of
3559 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
3560 (similar to those existing for EVP_CIPHER_CTX).
3565 EVP_MD_CTX_init(&md); /* new function call */
3566 EVP_DigestInit(&md, EVP_sha1());
3567 EVP_DigestUpdate(&md, in, len);
3568 EVP_DigestFinal(&md, out, NULL);
3569 EVP_MD_CTX_cleanup(&md); /* new function call */
3573 *) Make DES key schedule conform to the usual scheme, as well as
3574 correcting its structure. This means that calls to DES functions
3575 now have to pass a pointer to a des_key_schedule instead of a
3576 plain des_key_schedule (which was actually always a pointer
3579 des_key_schedule ks;
3581 des_set_key_checked(..., &ks);
3582 des_ncbc_encrypt(..., &ks, ...);
3584 (Note that a later change renames 'des_...' into 'DES_...'.)
3587 *) Initial reduction of linker bloat: the use of some functions, such as
3588 PEM causes large amounts of unused functions to be linked in due to
3589 poor organisation. For example pem_all.c contains every PEM function
3590 which has a knock on effect of linking in large amounts of (unused)
3591 ASN1 code. Grouping together similar functions and splitting unrelated
3592 functions prevents this.
3595 *) Cleanup of EVP macros.
3598 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
3599 correct _ecb suffix.
3602 *) Add initial OCSP responder support to ocsp application. The
3603 revocation information is handled using the text based index
3604 use by the ca application. The responder can either handle
3605 requests generated internally, supplied in files (for example
3606 via a CGI script) or using an internal minimal server.
3609 *) Add configuration choices to get zlib compression for TLS.
3612 *) Changes to Kerberos SSL for RFC 2712 compliance:
3613 1. Implemented real KerberosWrapper, instead of just using
3614 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
projects / openssl.git / blob