OpenSSL CHANGES
_______________
- Changes between 0.9.7c and 0.9.8 [xx XXX xxxx]
+ Changes between 0.9.7g and 0.9.8 [xx XXX xxxx]
+
+ *) Add new functionality to the bn blinding code:
+ - automatic re-creation of the BN_BLINDING parameters after
+ a fixed number of uses (currently 32)
+ - add new function for parameter creation
+ - introduce flags to control the update behaviour of the
+ BN_BLINDING parameters
+ - hide BN_BLINDING structure
+ Add a second BN_BLINDING slot to the RSA structure to improve
+ performance when a single RSA object is shared among several
+ threads.
+ [Nils Larsch]
+
+ *) Add support for DTLS.
+ [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
+
+ *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
+ to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
+ [Walter Goulet]
+
+ *) Remove buggy and incompletet DH cert support from
+ ssl/ssl_rsa.c and ssl/s3_both.c
+ [Nils Larsch]
+
+ *) Use SHA-1 instead of MD5 as the default digest algorithm for
+ the apps/openssl applications.
+ [Nils Larsch]
+
+ *) Compile clean with "-Wall -Wmissing-prototypes
+ -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
+ DEBUG_SAFESTACK must also be set.
+ [Ben Laurie]
+
+ *) Change ./Configure so that certain algorithms can be disabled by default.
+ The new counterpiece to "no-xxx" is "enable-xxx".
+
+ The patented RC5 and MDC2 algorithms will now be disabled unless
+ "enable-rc5" and "enable-mdc2", respectively, are specified.
+
+ (IDEA remains enabled despite being patented. This is because IDEA
+ is frequently required for interoperability, and there is no license
+ fee for non-commercial use. As before, "no-idea" can be used to
+ avoid this algorithm.)
+
+ [Bodo Moeller]
+
+ *) Add processing of proxy certificates (see RFC 3820). This work was
+ sponsored by KTH (The Royal Institute of Technology in Stockholm) and
+ EGEE (Enabling Grids for E-science in Europe).
+ [Richard Levitte]
+
+ *) RC4 performance overhaul on modern architectures/implementations, such
+ as Intel P4, IA-64 and AMD64.
+ [Andy Polyakov]
+
+ *) New utility extract-section.pl. This can be used specify an alternative
+ section number in a pod file instead of having to treat each file as
+ a separate case in Makefile. This can be done by adding two lines to the
+ pod file:
+
+ =for comment openssl_section:XXX
+
+ The blank line is mandatory.
+
+ [Steve Henson]
+
+ *) New arguments -certform, -keyform and -pass for s_client and s_server
+ to allow alternative format key and certificate files and passphrase
+ sources.
+ [Steve Henson]
+
+ *) New structure X509_VERIFY_PARAM which combines current verify parameters,
+ update associated structures and add various utility functions.
+
+ Add new policy related verify parameters, include policy checking in
+ standard verify code. Enhance 'smime' application with extra parameters
+ to support policy checking and print out.
+ [Steve Henson]
+
+ *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
+ Nehemiah processors. These extensions support AES encryption in hardware
+ as well as RNG (though RNG support is currently disabled).
+ [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
+
+ *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
+ [Geoff Thorpe]
+
+ *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
+ [Andy Polyakov and a number of other people]
+
+ *) Improved PowerPC platform support. Most notably BIGNUM assembler
+ implementation contributed by IBM.
+ [Suresh Chari, Peter Waltenberg, Andy Polyakov]
+
+ *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
+ exponent rather than 'unsigned long'. There is a corresponding change to
+ the new 'rsa_keygen' element of the RSA_METHOD structure.
+ [Jelte Jansen, Geoff Thorpe]
+
+ *) Functionality for creating the initial serial number file is now
+ moved from CA.pl to the 'ca' utility with a new option -create_serial.
+
+ (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
+ number file to 1, which is bound to cause problems. To avoid
+ the problems while respecting compatibility between different 0.9.7
+ patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
+ CA.pl for serial number initialization. With the new release 0.9.8,
+ we can fix the problem directly in the 'ca' utility.)
+ [Steve Henson]
+
+ *) Reduced header interdepencies by declaring more opaque objects in
+ ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
+ give fewer recursive includes, which could break lazy source code - so
+ this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
+ developers should define this symbol when building and using openssl to
+ ensure they track the recommended behaviour, interfaces, [etc], but
+ backwards-compatible behaviour prevails when this isn't defined.
+ [Geoff Thorpe]
+
+ *) New function X509_POLICY_NODE_print() which prints out policy nodes.
+ [Steve Henson]
+
+ *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
+ This will generate a random key of the appropriate length based on the
+ cipher context. The EVP_CIPHER can provide its own random key generation
+ routine to support keys of a specific form. This is used in the des and
+ 3des routines to generate a key of the correct parity. Update S/MIME
+ code to use new functions and hence generate correct parity DES keys.
+ Add EVP_CHECK_DES_KEY #define to return an error if the key is not
+ valid (weak or incorrect parity).
+ [Steve Henson]
+
+ *) Add a local set of CRLs that can be used by X509_verify_cert() as well
+ as looking them up. This is useful when the verified structure may contain
+ CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
+ present unless the new PKCS7_NO_CRL flag is asserted.
+ [Steve Henson]
+
+ *) Extend ASN1 oid configuration module. It now additionally accepts the
+ syntax:
+
+ shortName = some long name, 1.2.3.4
+ [Steve Henson]
+
+ *) Reimplemented the BN_CTX implementation. There is now no more static
+ limitation on the number of variables it can handle nor the depth of the
+ "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
+ information can now expand as required, and rather than having a single
+ static array of bignums, BN_CTX now uses a linked-list of such arrays
+ allowing it to expand on demand whilst maintaining the usefulness of
+ BN_CTX's "bundling".
+ [Geoff Thorpe]
+
+ *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
+ to allow all RSA operations to function using a single BN_CTX.
+ [Geoff Thorpe]
+
+ *) Preliminary support for certificate policy evaluation and checking. This
+ is initially intended to pass the tests outlined in "Conformance Testing
+ of Relying Party Client Certificate Path Processing Logic" v1.07.
+ [Steve Henson]
+
+ *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
+ remained unused and not that useful. A variety of other little bignum
+ tweaks and fixes have also been made continuing on from the audit (see
+ below).
+ [Geoff Thorpe]
+
+ *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
+ associated ASN1, EVP and SSL functions and old ASN1 macros.
+ [Richard Levitte]
+
+ *) 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
*) 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
Makefile.shared, for Cygwin's sake.
[Richard Levitte]
- *) Extend the BIGNUM API by creating new macros that behave like
- functions
-
- void BN_set_sign(BIGNUM *a, int neg);
- int BN_get_sign(const BIGNUM *a);
+ *) Extend the BIGNUM API by creating a function
+ void BN_set_negative(BIGNUM *a, int neg);
+ and a macro that behave like
+ int BN_is_negative(const BIGNUM *a);
- and avoid the need to access 'a->neg' directly in applications.
- [Nils Larsch <nla@trustcenter.de>]
+ to avoid the need to access 'a->neg' directly in applications.
+ [Nils Larsch]
*) Implement fast modular reduction for pseudo-Mersenne primes
used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
*) Include some named elliptic curves, and add OIDs from X9.62,
SECG, and WAP/WTLS. Each curve can be obtained from the new
function
- EC_GROUP_new_by_nid(),
+ EC_GROUP_new_by_curve_name(),
and the list of available named curves can be obtained with
EC_get_builtin_curves().
Also add a 'curve_name' member to EC_GROUP objects, which can be
accessed via
- EC_GROUP_set_nid()
- EC_GROUP_get_nid()
- [Nils Larsch <nla@trustcenter.de, Bodo Moeller]
+ EC_GROUP_set_curve_name()
+ EC_GROUP_get_curve_name()
+ [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
*) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
was actually never needed) and in BN_mul(). The removal in BN_mul()
differing sizes.
[Richard Levitte]
- Changes between 0.9.7b and 0.9.7c [xx XXX 2003]
+ Changes between 0.9.7g and 0.9.7h [XX xxx XXXX]
+
+ *) Add support for smime-type MIME parameter in S/MIME messages which some
+ clients need.
+ [Steve Henson]
+
+ *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
+ a threadsafe manner. Modify rsa code to use new function and add calls
+ to dsa and dh code (which had race conditions before).
+ [Steve Henson]
+
+ *) Include the fixed error library code in the C error file definitions
+ instead of fixing them up at runtime. This keeps the error code
+ structures constant.
+ [Steve Henson]
+
+ Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
+
+ *) Fixes for newer kerberos headers. NB: the casts are needed because
+ the 'length' field is signed on one version and unsigned on another
+ with no (?) obvious way to tell the difference, without these VC++
+ complains. Also the "definition" of FAR (blank) is no longer included
+ nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
+ some needed definitions.
+ [Steve Henson]
+
+ *) Undo Cygwin change.
+ [Ulf Möller]
+
+ *) Added support for proxy certificates according to RFC 3820.
+ Because they may be a security thread to unaware applications,
+ they must be explicitely allowed in run-time. See
+ docs/HOWTO/proxy_certificates.txt for further information.
+ [Richard Levitte]
+
+ Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
+
+ *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
+ server and client random values. Previously
+ (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
+ less random data when sizeof(time_t) > 4 (some 64 bit platforms).
+
+ This change has negligible security impact because:
+
+ 1. Server and client random values still have 24 bytes of pseudo random
+ data.
+
+ 2. Server and client random values are sent in the clear in the initial
+ handshake.
+
+ 3. The master secret is derived using the premaster secret (48 bytes in
+ size for static RSA ciphersuites) as well as client server and random
+ values.
+
+ The OpenSSL team would like to thank the UK NISCC for bringing this issue
+ to our attention.
+
+ [Stephen Henson, reported by UK NISCC]
+
+ *) Use Windows randomness collection on Cygwin.
+ [Ulf Möller]
+
+ *) Fix hang in EGD/PRNGD query when communication socket is closed
+ prematurely by EGD/PRNGD.
+ [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
+
+ *) Prompt for pass phrases when appropriate for PKCS12 input format.
+ [Steve Henson]
+
+ *) Back-port of selected performance improvements from development
+ branch, as well as improved support for PowerPC platforms.
+ [Andy Polyakov]
+
+ *) Add lots of checks for memory allocation failure, error codes to indicate
+ failure and freeing up memory if a failure occurs.
+ [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
+
+ *) Add new -passin argument to dgst.
+ [Steve Henson]
+
+ *) Perform some character comparisons of different types in X509_NAME_cmp:
+ this is needed for some certificates that reencode DNs into UTF8Strings
+ (in violation of RFC3280) and can't or wont issue name rollover
+ certificates.
+ [Steve Henson]
+
+ *) Make an explicit check during certificate validation to see that
+ the CA setting in each certificate on the chain is correct. As a
+ side effect always do the following basic checks on extensions,
+ not just when there's an associated purpose to the check:
+
+ - if there is an unhandled critical extension (unless the user
+ has chosen to ignore this fault)
+ - if the path length has been exceeded (if one is set at all)
+ - that certain extensions fit the associated purpose (if one has
+ been given)
+ [Richard Levitte]
+
+ Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
+
+ *) Avoid a race condition when CRLs are checked in a multi threaded
+ environment. This would happen due to the reordering of the revoked
+ entries during signature checking and serial number lookup. Now the
+ encoding is cached and the serial number sort performed under a lock.
+ Add new STACK function sk_is_sorted().
+ [Steve Henson]
+
+ *) Add Delta CRL to the extension code.
+ [Steve Henson]
+
+ *) Various fixes to s3_pkt.c so alerts are sent properly.
+ [David Holmes <d.holmes@f5.com>]
+
+ *) Reduce the chances of duplicate issuer name and serial numbers (in
+ violation of RFC3280) using the OpenSSL certificate creation utilities.
+ This is done by creating a random 64 bit value for the initial serial
+ number when a serial number file is created or when a self signed
+ certificate is created using 'openssl req -x509'. The initial serial
+ number file is created using 'openssl x509 -next_serial' in CA.pl
+ rather than being initialized to 1.
+ [Steve Henson]
+
+ Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
+
+ *) Fix null-pointer assignment in do_change_cipher_spec() revealed
+ by using the Codenomicon TLS Test Tool (CAN-2004-0079)
+ [Joe Orton, Steve Henson]
+
+ *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
+ (CAN-2004-0112)
+ [Joe Orton, Steve Henson]
+
+ *) 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]
+
+ *) X509 verify fixes. Disable broken certificate workarounds when
+ X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
+ keyUsage extension present. Don't accept CRLs with unhandled critical
+ extensions: since verify currently doesn't process CRL extensions this
+ rejects a CRL with *any* critical extensions. Add new verify error codes
+ for these cases.
+ [Steve Henson]
+
+ *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
+ A clarification of RFC2560 will require the use of OCTET STRINGs and
+ some implementations cannot handle the current raw format. Since OpenSSL
+ copies and compares OCSP nonces as opaque blobs without any attempt at
+ parsing them this should not create any compatibility issues.
+ [Steve Henson]
+
+ *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
+ calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
+ this HMAC (and other) operations are several times slower than OpenSSL
+ < 0.9.7.
+ [Steve Henson]
+
+ *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
+ [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
+
+ *) Use the correct content when signing type "other".
+ [Steve Henson]
+
+ Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
+
+ *) Fix various bugs revealed by running the NISCC test suite:
+
+ Stop out of bounds reads in the ASN1 code when presented with
+ invalid tags (CAN-2003-0543 and CAN-2003-0544).
+
+ Free up ASN1_TYPE correctly if ANY type is invalid (CAN-2003-0545).
+
+ If verify callback ignores invalid public key errors don't try to check
+ certificate signature with the NULL public key.
+
+ [Steve Henson]
*) New -ignore_err option in ocsp application to stop the server
exiting on the first error in a request.
[Steve Henson]
+ *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
+ if the server requested one: as stated in TLS 1.0 and SSL 3.0
+ specifications.
+ [Steve Henson]
+
*) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
extra data after the compression methods not only for TLS 1.0
but also for SSL 3.0 (as required by the specification).
between threads, blinding will still be very fast).
[Bodo Moeller]
-yet to be integrated into this CVS branch:
-- Geoff's ENGINE_set_default() fix
+ *) 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]
*) Target "mingw" now allows native Windows code to be generated in
the Cygwin environment as well as with the MinGW compiler.
*) Clean old EAY MD5 hack from e_os.h.
[Richard Levitte]
- Changes between 0.9.6j and 0.9.6k [xx XXX 2003]
+ Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
+
+ *) Fix null-pointer assignment in do_change_cipher_spec() revealed
+ by using the Codenomicon TLS Test Tool (CAN-2004-0079)
+ [Joe Orton, Steve Henson]
+
+ Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
+
+ *) Fix additional bug revealed by the NISCC test suite:
+
+ Stop bug triggering large recursion when presented with
+ certain ASN.1 tags (CAN-2003-0851)
+ [Steve Henson]
+
+ Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
+
+ *) Fix various bugs revealed by running the NISCC test suite:
+
+ Stop out of bounds reads in the ASN1 code when presented with
+ invalid tags (CAN-2003-0543 and CAN-2003-0544).
+
+ If verify callback ignores invalid public key errors don't try to check
+ certificate signature with the NULL public key.
+
+ [Steve Henson]
*) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
if the server requested one: as stated in TLS 1.0 and SSL 3.0
projects / openssl.git / blobdiff