+ Changes between 0.9.7c and 0.9.8 [xx XXX xxxx]
+
+ *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
+ associated ASN1, EVP and SSL functions and old ASN1 macros.
+
+ *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
+ and this should never fail. So the return value from the use of
+ BN_set_word() (which can fail due to needless expansion) is now deprecated;
+ if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
+ [Geoff Thorpe]
+
+ *) BN_CTX_get() should return zero-valued bignums, providing the same
+ initialised value as BN_new().
+ [Geoff Thorpe, suggested by Ulf Möller]
+
+ *) Support for inhibitAnyPolicy certificate extension.
+ [Steve Henson]
+
+ *) An audit of the BIGNUM code is underway, for which debugging code is
+ enabled when BN_DEBUG is defined. This makes stricter enforcements on what
+ is considered valid when processing BIGNUMs, and causes execution to
+ assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
+ further steps are taken to deliberately pollute unused data in BIGNUM
+ structures to try and expose faulty code further on. For now, openssl will
+ (in its default mode of operation) continue to tolerate the inconsistent
+ forms that it has tolerated in the past, but authors and packagers should
+ consider trying openssl and their own applications when compiled with
+ these debugging symbols defined. It will help highlight potential bugs in
+ their own code, and will improve the test coverage for OpenSSL itself. At
+ some point, these tighter rules will become openssl's default to improve
+ maintainability, though the assert()s and other overheads will remain only
+ in debugging configurations. See bn.h for more details.
+ [Geoff Thorpe, Nils Larsch, Ulf Möller]
+
+ *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
+ that can only be obtained through BN_CTX_new() (which implicitly
+ initialises it). The presence of this function only made it possible
+ to overwrite an existing structure (and cause memory leaks).
+ [Geoff Thorpe]
+
+ *) Because of the callback-based approach for implementing LHASH as a
+ template type, lh_insert() adds opaque objects to hash-tables and
+ lh_doall() or lh_doall_arg() are typically used with a destructor callback
+ to clean up those corresponding objects before destroying the hash table
+ (and losing the object pointers). So some over-zealous constifications in
+ LHASH have been relaxed so that lh_insert() does not take (nor store) the
+ objects as "const" and the lh_doall[_arg] callback wrappers are not
+ prototyped to have "const" restrictions on the object pointers they are
+ given (and so aren't required to cast them away any more).
+ [Geoff Thorpe]
+
+ *) The tmdiff.h API was so ugly and minimal that our own timing utility
+ (speed) prefers to use its own implementation. The two implementations
+ haven't been consolidated as yet (volunteers?) but the tmdiff API has had
+ its object type properly exposed (MS_TM) instead of casting to/from "char
+ *". This may still change yet if someone realises MS_TM and "ms_time_***"
+ aren't necessarily the greatest nomenclatures - but this is what was used
+ internally to the implementation so I've used that for now.
+ [Geoff Thorpe]
+
+ *) Ensure that deprecated functions do not get compiled when
+ OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
+ the self-tests were still using deprecated key-generation functions so
+ these have been updated also.
+ [Geoff Thorpe]
+
+ *) Reorganise PKCS#7 code to separate the digest location functionality
+ into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
+ New function PKCS7_set_digest() to set the digest type for PKCS#7
+ digestedData type. Add additional code to correctly generate the
+ digestedData type and add support for this type in PKCS7 initialization
+ functions.
+ [Steve Henson]
+
+ *) New function PKCS7_set0_type_other() this initializes a PKCS7
+ structure of type "other".
+ [Steve Henson]
+
+ *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
+ sure the loop does correctly stop and breaking ("division by zero")
+ modulus operations are not performed. The (pre-generated) prime
+ table crypto/bn/bn_prime.h was already correct, but it could not be
+ re-generated on some platforms because of the "division by zero"
+ situation in the script.
+ [Ralf S. Engelschall]
+
+ *) Update support for ECC-based TLS ciphersuites according to
+ draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
+ SHA-1 now is only used for "small" curves (where the
+ representation of a field element takes up to 24 bytes); for
+ larger curves, the field element resulting from ECDH is directly
+ used as premaster secret.
+ [Douglas Stebila (Sun Microsystems Laboratories)]
+
+ *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
+ curve secp160r1 to the tests.
+ [Douglas Stebila (Sun Microsystems Laboratories)]
+
+ *) Add the possibility to load symbols globally with DSO.
+ [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
+
+ *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
+ control of the error stack.
+ [Richard Levitte]
+
+ *) Add support for STORE in ENGINE.
+ [Richard Levitte]
+
+ *) Add the STORE type. The intention is to provide a common interface
+ to certificate and key stores, be they simple file-based stores, or
+ HSM-type store, or LDAP stores, or...
+ NOTE: The code is currently UNTESTED and isn't really used anywhere.
+ [Richard Levitte]
+
+ *) Add a generic structure called OPENSSL_ITEM. This can be used to
+ pass a list of arguments to any function as well as provide a way
+ for a function to pass data back to the caller.
+ [Richard Levitte]
+
+ *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
+ works like BUF_strdup() but can be used to duplicate a portion of
+ a string. The copy gets NUL-terminated. BUF_memdup() duplicates
+ a memory area.
+ [Richard Levitte]
+
+ *) Add the function sk_find_ex() which works like sk_find(), but will
+ return an index to an element even if an exact match couldn't be
+ found. The index is guaranteed to point at the element where the
+ searched-for key would be inserted to preserve sorting order.
+ [Richard Levitte]
+
+ *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
+ takes an extra flags argument for optional functionality. Currently,
+ the following flags are defined:
+
+ OBJ_BSEARCH_VALUE_ON_NOMATCH
+ This one gets OBJ_bsearch_ex() to return a pointer to the first
+ element where the comparing function returns a negative or zero
+ number.
+
+ OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
+ This one gets OBJ_bsearch_ex() to return a pointer to the first
+ element where the comparing function returns zero. This is useful
+ if there are more than one element where the comparing function
+ returns zero.
+ [Richard Levitte]
+
+ *) Make it possible to create self-signed certificates with 'openssl ca'
+ in such a way that the self-signed certificate becomes part of the
+ CA database and uses the same mechanisms for serial number generation
+ as all other certificate signing. The new flag '-selfsign' enables
+ this functionality. Adapt CA.sh and CA.pl.in.
+ [Richard Levitte]
+
+ *) Add functionality to check the public key of a certificate request
+ against a given private. This is useful to check that a certificate
+ request can be signed by that key (self-signing).
+ [Richard Levitte]
+
+ *) Make it possible to have multiple active certificates with the same
+ subject in the CA index file. This is done only if the keyword
+ 'unique_subject' is set to 'no' in the main CA section (default
+ if 'CA_default') of the configuration file. The value is saved
+ with the database itself in a separate index attribute file,
+ named like the index file with '.attr' appended to the name.
+ [Richard Levitte]
+
+ *) Generate muti valued AVAs using '+' notation in config files for
+ req and dirName.
+ [Steve Henson]
+
+ *) Support for nameConstraints certificate extension.
+ [Steve Henson]
+
+ *) Support for policyConstraints certificate extension.
+ [Steve Henson]
+
+ *) Support for policyMappings certificate extension.
+ [Steve Henson]
+
+ *) Fixed a typo bug that would cause ENGINE_set_default() to set an
+ ENGINE as defaults for all supported algorithms irrespective of
+ the 'flags' parameter. 'flags' is now honoured, so applications
+ should make sure they are passing it correctly.
+ [Geoff Thorpe]
+
+ *) Make sure the default DSA_METHOD implementation only uses its
+ dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
+ and change its own handlers to be NULL so as to remove unnecessary
+ indirection. This lets alternative implementations fallback to the
+ default implementation more easily.
+ [Geoff Thorpe]
+
+ *) Support for directoryName in GeneralName related extensions
+ in config files.
+ [Steve Henson]
+
+ *) Make it possible to link applications using Makefile.shared.
+ Make that possible even when linking against static libraries!
+ [Richard Levitte]
+
+ *) Support for single pass processing for S/MIME signing. This now
+ means that S/MIME signing can be done from a pipe, in addition
+ cleartext signing (multipart/signed type) is effectively streaming
+ and the signed data does not need to be all held in memory.
+
+ This is done with a new flag PKCS7_STREAM. When this flag is set
+ PKCS7_sign() only initializes the PKCS7 structure and the actual signing
+ is done after the data is output (and digests calculated) in
+ SMIME_write_PKCS7().
+ [Steve Henson]
+
+ *) Add full support for -rpath/-R, both in shared libraries and
+ applications, at least on the platforms where it's known how
+ to do it.
+ [Richard Levitte]
+
+ *) In crypto/ec/ec_mult.c, implement fast point multiplication with
+ precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
+ will now compute a table of multiples of the generator that
+ makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
+ faster (notably in the case of a single point multiplication,
+ scalar * generator).
+ [Nils Larsch, Bodo Moeller]
+
+ *) IPv6 support for certificate extensions. The various extensions
+ which use the IP:a.b.c.d can now take IPv6 addresses using the
+ formats of RFC1884 2.2 . IPv6 addresses are now also displayed
+ correctly.
+ [Steve Henson]
+
+ *) Added an ENGINE that implements RSA by performing private key
+ exponentiations with the GMP library. The conversions to and from
+ GMP's mpz_t format aren't optimised nor are any montgomery forms
+ cached, and on x86 it appears OpenSSL's own performance has caught up.
+ However there are likely to be other architectures where GMP could
+ provide a boost. This ENGINE is not built in by default, but it can be
+ specified at Configure time and should be accompanied by the necessary
+ linker additions, eg;
+ ./config -DOPENSSL_USE_GMP -lgmp
+ [Geoff Thorpe]
+
+ *) "openssl engine" will not display ENGINE/DSO load failure errors when
+ testing availability of engines with "-t" - the old behaviour is
+ produced by increasing the feature's verbosity with "-tt".
+ [Geoff Thorpe]
+
+ *) ECDSA routines: under certain error conditions uninitialized BN objects
+ could be freed. Solution: make sure initialization is performed early
+ enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
+ via PR#459)
+ [Lutz Jaenicke]
+
+ *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
+ and DH_METHOD (eg. by ENGINE implementations) to override the normal
+ software implementations. For DSA and DH, parameter generation can
+ also be overriden by providing the appropriate method callbacks.
+ [Geoff Thorpe]
projects / openssl.git / blobdiff