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OpenSSL CHANGES
_______________
Changes between 1.0.1b and 1.0.1c [10 May 2012]
*) Sanity check record length before skipping explicit IV in TLS
1.2, 1.1 and DTLS to fix DoS attack.
Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
fuzzing as a service testing platform.
(CVE-2012-2333)
[Steve Henson]
*) Initialise tkeylen properly when encrypting CMS messages.
Thanks to Solar Designer of Openwall for reporting this issue.
[Steve Henson]
*) In FIPS mode don't try to use composite ciphers as they are not
approved.
[Steve Henson]
Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
*) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
mean any application compiled against OpenSSL 1.0.0 headers setting
SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng
TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
0x10000000L Any application which was previously compiled against
OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
will need to be recompiled as a result. Letting be results in
inability to disable specifically TLS 1.1 and in client context,
in unlike event, limit maximum offered version to TLS 1.0 [see below].
[Steve Henson]
*) In order to ensure interoperabilty SSL_OP_NO_protocolX does not
disable just protocol X, but all protocols above X *if* there are
protocols *below* X still enabled. In more practical terms it means
that if application wants to disable TLS1.0 in favor of TLS1.1 and
above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
client side.
[Andy Polyakov]
Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
*) Check for potentially exploitable overflows in asn1_d2i_read_bio
BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
in CRYPTO_realloc_clean.
Thanks to Tavis Ormandy, Google Security Team, for discovering this
issue and to Adam Langley <agl@chromium.org> for fixing it.
(CVE-2012-2110)
[Adam Langley (Google), Tavis Ormandy, Google Security Team]
*) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
[Adam Langley]
*) Workarounds for some broken servers that "hang" if a client hello
record length exceeds 255 bytes.
1. Do not use record version number > TLS 1.0 in initial client
hello: some (but not all) hanging servers will now work.
2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
the number of ciphers sent in the client hello. This should be
set to an even number, such as 50, for example by passing:
-DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
Most broken servers should now work.
3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
TLS 1.2 client support entirely.
[Steve Henson]
*) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
[Andy Polyakov]
Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
*) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
STRING form instead of a DigestInfo.
[Steve Henson]
*) The format used for MDC2 RSA signatures is inconsistent between EVP
and the RSA_sign/RSA_verify functions. This was made more apparent when
OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
the correct format in RSA_verify so both forms transparently work.
[Steve Henson]
*) Some servers which support TLS 1.0 can choke if we initially indicate
support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
encrypted premaster secret. As a workaround use the maximum pemitted
client version in client hello, this should keep such servers happy
and still work with previous versions of OpenSSL.
[Steve Henson]
*) Add support for TLS/DTLS heartbeats.
[Robin Seggelmann <seggelmann@fh-muenster.de>]
*) Add support for SCTP.
[Robin Seggelmann <seggelmann@fh-muenster.de>]
*) Improved PRNG seeding for VOS.
[Paul Green <Paul.Green@stratus.com>]
*) Extensive assembler packs updates, most notably:
- x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
- x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
- x86_64: bit-sliced AES implementation;
- ARM: NEON support, contemporary platforms optimizations;
- s390x: z196 support;
- *: GHASH and GF(2^m) multiplication implementations;
[Andy Polyakov]
*) Make TLS-SRP code conformant with RFC 5054 API cleanup
(removal of unnecessary code)
[Peter Sylvester <peter.sylvester@edelweb.fr>]
*) Add TLS key material exporter from RFC 5705.
[Eric Rescorla]
*) Add DTLS-SRTP negotiation from RFC 5764.
[Eric Rescorla]
*) Add Next Protocol Negotiation,
http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
disabled with a no-npn flag to config or Configure. Code donated
by Google.
[Adam Langley <agl@google.com> and Ben Laurie]
*) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
NIST-P256, NIST-P521, with constant-time single point multiplication on
typical inputs. Compiler support for the nonstandard type __uint128_t is
required to use this (present in gcc 4.4 and later, for 64-bit builds).
Code made available under Apache License version 2.0.
Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
line to include this in your build of OpenSSL, and run "make depend" (or
"make update"). This enables the following EC_METHODs:
EC_GFp_nistp224_method()
EC_GFp_nistp256_method()
EC_GFp_nistp521_method()
EC_GROUP_new_by_curve_name() will automatically use these (while
EC_GROUP_new_curve_GFp() currently prefers the more flexible
implementations).
[Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
*) Use type ossl_ssize_t instad of ssize_t which isn't available on
all platforms. Move ssize_t definition from e_os.h to the public
header file e_os2.h as it now appears in public header file cms.h
[Steve Henson]
*) New -sigopt option to the ca, req and x509 utilities. Additional
signature parameters can be passed using this option and in
particular PSS.
[Steve Henson]
*) Add RSA PSS signing function. This will generate and set the
appropriate AlgorithmIdentifiers for PSS based on those in the
corresponding EVP_MD_CTX structure. No application support yet.
[Steve Henson]
*) Support for companion algorithm specific ASN1 signing routines.
New function ASN1_item_sign_ctx() signs a pre-initialised
EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
the appropriate parameters.
[Steve Henson]
*) Add new algorithm specific ASN1 verification initialisation function
to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
handling will be the same no matter what EVP_PKEY_METHOD is used.
Add a PSS handler to support verification of PSS signatures: checked
against a number of sample certificates.
[Steve Henson]
*) Add signature printing for PSS. Add PSS OIDs.
[Steve Henson, Martin Kaiser <lists@kaiser.cx>]
*) Add algorithm specific signature printing. An individual ASN1 method
can now print out signatures instead of the standard hex dump.
More complex signatures (e.g. PSS) can print out more meaningful
information. Include DSA version that prints out the signature
parameters r, s.
[Steve Henson]
*) Password based recipient info support for CMS library: implementing
RFC3211.
[Steve Henson]
*) Split password based encryption into PBES2 and PBKDF2 functions. This
neatly separates the code into cipher and PBE sections and is required
for some algorithms that split PBES2 into separate pieces (such as
password based CMS).
[Steve Henson]
*) Session-handling fixes:
- Fix handling of connections that are resuming with a session ID,
but also support Session Tickets.
- Fix a bug that suppressed issuing of a new ticket if the client
presented a ticket with an expired session.
- Try to set the ticket lifetime hint to something reasonable.
- Make tickets shorter by excluding irrelevant information.
- On the client side, don't ignore renewed tickets.
[Adam Langley, Bodo Moeller (Google)]
*) Fix PSK session representation.
[Bodo Moeller]
*) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
This work was sponsored by Intel.
[Andy Polyakov]
*) Add GCM support to TLS library. Some custom code is needed to split
the IV between the fixed (from PRF) and explicit (from TLS record)
portions. This adds all GCM ciphersuites supported by RFC5288 and
RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
add a special AESGCM string for GCM only.
[Steve Henson]
*) Expand range of ctrls for AES GCM. Permit setting invocation
field on decrypt and retrieval of invocation field only on encrypt.
[Steve Henson]
*) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
As required by RFC5289 these ciphersuites cannot be used if for
versions of TLS earlier than 1.2.
[Steve Henson]
*) For FIPS capable OpenSSL interpret a NULL default public key method
as unset and return the appopriate default but do *not* set the default.
This means we can return the appopriate method in applications that
swicth between FIPS and non-FIPS modes.
[Steve Henson]
*) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
ENGINE is used then we cannot handle that in the FIPS module so we
keep original code iff non-FIPS operations are allowed.
[Steve Henson]
*) Add -attime option to openssl utilities.
[Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
*) Redirect DSA and DH operations to FIPS module in FIPS mode.
[Steve Henson]
*) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
FIPS EC methods unconditionally for now.
[Steve Henson]
*) New build option no-ec2m to disable characteristic 2 code.
[Steve Henson]
*) Backport libcrypto audit of return value checking from 1.1.0-dev; not
all cases can be covered as some introduce binary incompatibilities.
[Steve Henson]
*) Redirect RSA operations to FIPS module including keygen,
encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
[Steve Henson]
*) Add similar low level API blocking to ciphers.
[Steve Henson]
*) Low level digest APIs are not approved in FIPS mode: any attempt
to use these will cause a fatal error. Applications that *really* want
to use them can use the private_* version instead.
[Steve Henson]
*) Redirect cipher operations to FIPS module for FIPS builds.
[Steve Henson]
*) Redirect digest operations to FIPS module for FIPS builds.
[Steve Henson]
*) Update build system to add "fips" flag which will link in fipscanister.o
for static and shared library builds embedding a signature if needed.
[Steve Henson]
*) Output TLS supported curves in preference order instead of numerical
order. This is currently hardcoded for the highest order curves first.
This should be configurable so applications can judge speed vs strength.
[Steve Henson]
*) Add TLS v1.2 server support for client authentication.
[Steve Henson]
*) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
and enable MD5.
[Steve Henson]
*) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
FIPS modules versions.
[Steve Henson]
*) Add TLS v1.2 client side support for client authentication. Keep cache
of handshake records longer as we don't know the hash algorithm to use
until after the certificate request message is received.
[Steve Henson]
*) Initial TLS v1.2 client support. Add a default signature algorithms
extension including all the algorithms we support. Parse new signature
format in client key exchange. Relax some ECC signing restrictions for
TLS v1.2 as indicated in RFC5246.
[Steve Henson]
*) Add server support for TLS v1.2 signature algorithms extension. Switch
to new signature format when needed using client digest preference.
All server ciphersuites should now work correctly in TLS v1.2. No client
support yet and no support for client certificates.
[Steve Henson]
*) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
ciphersuites. At present only RSA key exchange ciphersuites work with
TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
and version checking.
[Steve Henson]
*) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
with this defined it will not be affected by any changes to ssl internal
structures. Add several utility functions to allow openssl application
to work with OPENSSL_NO_SSL_INTERN defined.
[Steve Henson]
*) Add SRP support.
[Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
*) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
[Steve Henson]
*) Permit abbreviated handshakes when renegotiating using the function
SSL_renegotiate_abbreviated().
[Robin Seggelmann <seggelmann@fh-muenster.de>]
*) Add call to ENGINE_register_all_complete() to
ENGINE_load_builtin_engines(), so some implementations get used
automatically instead of needing explicit application support.
[Steve Henson]
*) Add support for TLS key exporter as described in RFC5705.
[Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
*) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
a few changes are required:
Add SSL_OP_NO_TLSv1_1 flag.
Add TLSv1_1 methods.
Update version checking logic to handle version 1.1.
Add explicit IV handling (ported from DTLS code).
Add command line options to s_client/s_server.
[Steve Henson]
Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
*) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
in CMS and PKCS7 code. When RSA decryption fails use a random key for
content decryption and always return the same error. Note: this attack
needs on average 2^20 messages so it only affects automated senders. The
old behaviour can be reenabled in the CMS code by setting the
CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
an MMA defence is not necessary.
Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
this issue. (CVE-2012-0884)
[Steve Henson]
*) Fix CVE-2011-4619: make sure we really are receiving a
client hello before rejecting multiple SGC restarts. Thanks to
Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
[Steve Henson]
Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
*) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
Thanks to Antonio Martin, Enterprise Secure Access Research and
Development, Cisco Systems, Inc. for discovering this bug and
preparing a fix. (CVE-2012-0050)
[Antonio Martin]
Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
*) Nadhem Alfardan and Kenny Paterson have discovered an extension
of the Vaudenay padding oracle attack on CBC mode encryption
which enables an efficient plaintext recovery attack against
the OpenSSL implementation of DTLS. Their attack exploits timing
differences arising during decryption processing. A research
paper describing this attack can be found at:
http://www.isg.rhul.ac.uk/~kp/dtls.pdf
Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
Security Group at Royal Holloway, University of London
(www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
<seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
for preparing the fix. (CVE-2011-4108)
[Robin Seggelmann, Michael Tuexen]
*) Clear bytes used for block padding of SSL 3.0 records.
(CVE-2011-4576)
[Adam Langley (Google)]
*) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
Kadianakis <desnacked@gmail.com> for discovering this issue and
Adam Langley for preparing the fix. (CVE-2011-4619)
[Adam Langley (Google)]
*) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
[Andrey Kulikov <amdeich@gmail.com>]
*) Prevent malformed RFC3779 data triggering an assertion failure.
Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
[Rob Austein <sra@hactrn.net>]
*) Improved PRNG seeding for VOS.
[Paul Green <Paul.Green@stratus.com>]
*) Fix ssl_ciph.c set-up race.
[Adam Langley (Google)]
*) Fix spurious failures in ecdsatest.c.
[Emilia Käsper (Google)]
*) Fix the BIO_f_buffer() implementation (which was mixing different
interpretations of the '..._len' fields).
[Adam Langley (Google)]
*) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
threads won't reuse the same blinding coefficients.
This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
lock to call BN_BLINDING_invert_ex, and avoids one use of
BN_BLINDING_update for each BN_BLINDING structure (previously,
the last update always remained unused).
[Emilia Käsper (Google)]
*) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
[Bob Buckholz (Google)]
Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
*) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
by initialising X509_STORE_CTX properly. (CVE-2011-3207)
[Kaspar Brand <ossl@velox.ch>]
*) Fix SSL memory handling for (EC)DH ciphersuites, in particular
for multi-threaded use of ECDH. (CVE-2011-3210)
[Adam Langley (Google)]
*) Fix x509_name_ex_d2i memory leak on bad inputs.
[Bodo Moeller]
*) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
signature public key algorithm by using OID xref utilities instead.
Before this you could only use some ECC ciphersuites with SHA1 only.
[Steve Henson]
*) Add protection against ECDSA timing attacks as mentioned in the paper
by Billy Bob Brumley and Nicola Tuveri, see:
http://eprint.iacr.org/2011/232.pdf
[Billy Bob Brumley and Nicola Tuveri]
Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
*) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
[Neel Mehta, Adam Langley, Bodo Moeller (Google)]
*) Fix bug in string printing code: if *any* escaping is enabled we must
escape the escape character (backslash) or the resulting string is
ambiguous.
[Steve Henson]
Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
*) Disable code workaround for ancient and obsolete Netscape browsers
and servers: an attacker can use it in a ciphersuite downgrade attack.
Thanks to Martin Rex for discovering this bug. CVE-2010-4180
[Steve Henson]
*) Fixed J-PAKE implementation error, originally discovered by
Sebastien Martini, further info and confirmation from Stefan
Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
[Ben Laurie]
Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
*) Fix extension code to avoid race conditions which can result in a buffer
overrun vulnerability: resumed sessions must not be modified as they can
be shared by multiple threads. CVE-2010-3864
[Steve Henson]
*) Fix WIN32 build system to correctly link an ENGINE directory into
a DLL.
[Steve Henson]
Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
*) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
(CVE-2010-1633)
[Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
*) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
context. The operation can be customised via the ctrl mechanism in
case ENGINEs want to include additional functionality.
[Steve Henson]
*) Tolerate yet another broken PKCS#8 key format: private key value negative.
[Steve Henson]
*) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
output hashes compatible with older versions of OpenSSL.
[Willy Weisz <weisz@vcpc.univie.ac.at>]
*) Fix compression algorithm handling: if resuming a session use the
compression algorithm of the resumed session instead of determining
it from client hello again. Don't allow server to change algorithm.
[Steve Henson]
*) Add load_crls() function to apps tidying load_certs() too. Add option
to verify utility to allow additional CRLs to be included.
[Steve Henson]
*) Update OCSP request code to permit adding custom headers to the request:
some responders need this.
[Steve Henson]
*) The function EVP_PKEY_sign() returns <=0 on error: check return code
correctly.
[Julia Lawall <julia@diku.dk>]
*) Update verify callback code in apps/s_cb.c and apps/verify.c, it
needlessly dereferenced structures, used obsolete functions and
didn't handle all updated verify codes correctly.
[Steve Henson]
*) Disable MD2 in the default configuration.
[Steve Henson]
*) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
indicate the initial BIO being pushed or popped. This makes it possible
to determine whether the BIO is the one explicitly called or as a result
of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
it handles reference counts correctly and doesn't zero out the I/O bio
when it is not being explicitly popped. WARNING: applications which
included workarounds for the old buggy behaviour will need to be modified
or they could free up already freed BIOs.
[Steve Henson]
*) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
renaming to all platforms (within the 0.9.8 branch, this was
done conditionally on Netware platforms to avoid a name clash).
[Guenter <lists@gknw.net>]
*) Add ECDHE and PSK support to DTLS.
[Michael Tuexen <tuexen@fh-muenster.de>]
*) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
be used on C++.
[Steve Henson]
*) Add "missing" function EVP_MD_flags() (without this the only way to
retrieve a digest flags is by accessing the structure directly. Update
EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
or cipher is registered as in the "from" argument. Print out all
registered digests in the dgst usage message instead of manually
attempting to work them out.
[Steve Henson]
*) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
this allows the use of compression and extensions. Change default cipher
string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
by default unless an application cipher string requests it.
[Steve Henson]
*) Alter match criteria in PKCS12_parse(). It used to try to use local
key ids to find matching certificates and keys but some PKCS#12 files
don't follow the (somewhat unwritten) rules and this strategy fails.
Now just gather all certificates together and the first private key
then look for the first certificate that matches the key.
[Steve Henson]
*) Support use of registered digest and cipher names for dgst and cipher
commands instead of having to add each one as a special case. So now
you can do:
openssl sha256 foo
as well as:
openssl dgst -sha256 foo
and this works for ENGINE based algorithms too.
[Steve Henson]
*) Update Gost ENGINE to support parameter files.
[Victor B. Wagner <vitus@cryptocom.ru>]
*) Support GeneralizedTime in ca utility.
[Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
*) Enhance the hash format used for certificate directory links. The new
form uses the canonical encoding (meaning equivalent names will work
even if they aren't identical) and uses SHA1 instead of MD5. This form
is incompatible with the older format and as a result c_rehash should
be used to rebuild symbolic links.
[Steve Henson]
*) Make PKCS#8 the default write format for private keys, replacing the
traditional format. This form is standardised, more secure and doesn't
include an implicit MD5 dependency.
[Steve Henson]
*) Add a $gcc_devteam_warn option to Configure. The idea is that any code
committed to OpenSSL should pass this lot as a minimum.
[Steve Henson]
*) Add session ticket override functionality for use by EAP-FAST.
[Jouni Malinen <j@w1.fi>]
*) Modify HMAC functions to return a value. Since these can be implemented
in an ENGINE errors can occur.
[Steve Henson]
*) Type-checked OBJ_bsearch_ex.
[Ben Laurie]
*) Type-checked OBJ_bsearch. Also some constification necessitated
by type-checking. Still to come: TXT_DB, bsearch(?),
OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
CONF_VALUE.
[Ben Laurie]
*) New function OPENSSL_gmtime_adj() to add a specific number of days and
seconds to a tm structure directly, instead of going through OS
specific date routines. This avoids any issues with OS routines such
as the year 2038 bug. New *_adj() functions for ASN1 time structures
and X509_time_adj_ex() to cover the extended range. The existing
X509_time_adj() is still usable and will no longer have any date issues.
[Steve Henson]
*) Delta CRL support. New use deltas option which will attempt to locate
and search any appropriate delta CRLs available.
This work was sponsored by Google.
[Steve Henson]
*) Support for CRLs partitioned by reason code. Reorganise CRL processing
code and add additional score elements. Validate alternate CRL paths
as part of the CRL checking and indicate a new error "CRL path validation
error" in this case. Applications wanting additional details can use
the verify callback and check the new "parent" field. If this is not
NULL CRL path validation is taking place. Existing applications wont
see this because it requires extended CRL support which is off by
default.
This work was sponsored by Google.
[Steve Henson]
*) Support for freshest CRL extension.
This work was sponsored by Google.
[Steve Henson]
*) Initial indirect CRL support. Currently only supported in the CRLs
passed directly and not via lookup. Process certificate issuer
CRL entry extension and lookup CRL entries by bother issuer name
and serial number. Check and process CRL issuer entry in IDP extension.
This work was sponsored by Google.
[Steve Henson]
*) Add support for distinct certificate and CRL paths. The CRL issuer
certificate is validated separately in this case. Only enabled if
an extended CRL support flag is set: this flag will enable additional
CRL functionality in future.
This work was sponsored by Google.
[Steve Henson]
*) Add support for policy mappings extension.
This work was sponsored by Google.
[Steve Henson]
*) Fixes to pathlength constraint, self issued certificate handling,
policy processing to align with RFC3280 and PKITS tests.
This work was sponsored by Google.
[Steve Henson]
*) Support for name constraints certificate extension. DN, email, DNS
and URI types are currently supported.
This work was sponsored by Google.
[Steve Henson]
*) To cater for systems that provide a pointer-based thread ID rather
than numeric, deprecate the current numeric thread ID mechanism and
replace it with a structure and associated callback type. This
mechanism allows a numeric "hash" to be extracted from a thread ID in
either case, and on platforms where pointers are larger than 'long',
mixing is done to help ensure the numeric 'hash' is usable even if it
can't be guaranteed unique. The default mechanism is to use "&errno"
as a pointer-based thread ID to distinguish between threads.
Applications that want to provide their own thread IDs should now use
CRYPTO_THREADID_set_callback() to register a callback that will call
either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
Note that ERR_remove_state() is now deprecated, because it is tied
to the assumption that thread IDs are numeric. ERR_remove_state(0)
to free the current thread's error state should be replaced by
ERR_remove_thread_state(NULL).
(This new approach replaces the functions CRYPTO_set_idptr_callback(),
CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
application was previously providing a numeric thread callback that
was inappropriate for distinguishing threads, then uniqueness might
have been obtained with &errno that happened immediately in the
intermediate development versions of OpenSSL; this is no longer the
case, the numeric thread callback will now override the automatic use
of &errno.)
[Geoff Thorpe, with help from Bodo Moeller]
*) Initial support for different CRL issuing certificates. This covers a
simple case where the self issued certificates in the chain exist and
the real CRL issuer is higher in the existing chain.
This work was sponsored by Google.
[Steve Henson]
*) Removed effectively defunct crypto/store from the build.
[Ben Laurie]
*) Revamp of STACK to provide stronger type-checking. Still to come:
TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
ASN1_STRING, CONF_VALUE.
[Ben Laurie]
*) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
RAM on SSL connections. This option can save about 34k per idle SSL.
[Nick Mathewson]
*) Revamp of LHASH to provide stronger type-checking. Still to come:
STACK, TXT_DB, bsearch, qsort.
[Ben Laurie]
*) Initial support for Cryptographic Message Syntax (aka CMS) based
on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
support for data, signedData, compressedData, digestedData and
encryptedData, envelopedData types included. Scripts to check against
RFC4134 examples draft and interop and consistency checks of many
content types and variants.
[Steve Henson]
*) Add options to enc utility to support use of zlib compression BIO.
[Steve Henson]
*) Extend mk1mf to support importing of options and assembly language
files from Configure script, currently only included in VC-WIN32.
The assembly language rules can now optionally generate the source
files from the associated perl scripts.
[Steve Henson]
*) Implement remaining functionality needed to support GOST ciphersuites.
Interop testing has been performed using CryptoPro implementations.
[Victor B. Wagner <vitus@cryptocom.ru>]
*) s390x assembler pack.
[Andy Polyakov]
*) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
"family."
[Andy Polyakov]
*) Implement Opaque PRF Input TLS extension as specified in
draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
official specification yet and no extension type assignment by
IANA exists, this extension (for now) will have to be explicitly
enabled when building OpenSSL by providing the extension number
to use. For example, specify an option
-DTLSEXT_TYPE_opaque_prf_input=0x9527
to the "config" or "Configure" script to enable the extension,
assuming extension number 0x9527 (which is a completely arbitrary
and unofficial assignment based on the MD5 hash of the Internet
Draft). Note that by doing so, you potentially lose
interoperability with other TLS implementations since these might
be using the same extension number for other purposes.
SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
opaque PRF input value to use in the handshake. This will create
an interal copy of the length-'len' string at 'src', and will
return non-zero for success.
To get more control and flexibility, provide a callback function
by using
SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
where
int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
void *arg;
Callback function 'cb' will be called in handshakes, and is
expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
Argument 'arg' is for application purposes (the value as given to
SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
be provided to the callback function). The callback function
has to return non-zero to report success: usually 1 to use opaque
PRF input just if possible, or 2 to enforce use of the opaque PRF
input. In the latter case, the library will abort the handshake
if opaque PRF input is not successfully negotiated.
Arguments 'peerinput' and 'len' given to the callback function
will always be NULL and 0 in the case of a client. A server will
see the client's opaque PRF input through these variables if
available (NULL and 0 otherwise). Note that if the server
provides an opaque PRF input, the length must be the same as the
length of the client's opaque PRF input.
Note that the callback function will only be called when creating
a new session (session resumption can resume whatever was
previously negotiated), and will not be called in SSL 2.0
handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
for applications that need to enforce opaque PRF input.
[Bodo Moeller]
*) Update ssl code to support digests other than SHA1+MD5 for handshake
MAC.
[Victor B. Wagner <vitus@cryptocom.ru>]
*) Add RFC4507 support to OpenSSL. This includes the corrections in
RFC4507bis. The encrypted ticket format is an encrypted encoded
SSL_SESSION structure, that way new session features are automatically
supported.
If a client application caches session in an SSL_SESSION structure
support is transparent because tickets are now stored in the encoded
SSL_SESSION.
The SSL_CTX structure automatically generates keys for ticket
protection in servers so again support should be possible
with no application modification.
If a client or server wishes to disable RFC4507 support then the option
SSL_OP_NO_TICKET can be set.
Add a TLS extension debugging callback to allow the contents of any client
or server extensions to be examined.
This work was sponsored by Google.
[Steve Henson]
*) Final changes to avoid use of pointer pointer casts in OpenSSL.
OpenSSL should now compile cleanly on gcc 4.2
[Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
*) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
support including streaming MAC support: this is required for GOST
ciphersuite support.
[Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
*) Add option -stream to use PKCS#7 streaming in smime utility. New
function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
to output in BER and PEM format.
[Steve Henson]
*) Experimental support for use of HMAC via EVP_PKEY interface. This
allows HMAC to be handled via the EVP_DigestSign*() interface. The
EVP_PKEY "key" in this case is the HMAC key, potentially allowing
ENGINE support for HMAC keys which are unextractable. New -mac and
-macopt options to dgst utility.
[Steve Henson]
*) New option -sigopt to dgst utility. Update dgst to use
EVP_Digest{Sign,Verify}*. These two changes make it possible to use
alternative signing paramaters such as X9.31 or PSS in the dgst
utility.
[Steve Henson]
*) Change ssl_cipher_apply_rule(), the internal function that does
the work each time a ciphersuite string requests enabling
("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
removing ("!foo+bar") a class of ciphersuites: Now it maintains
the order of disabled ciphersuites such that those ciphersuites
that most recently went from enabled to disabled not only stay
in order with respect to each other, but also have higher priority
than other disabled ciphersuites the next time ciphersuites are
enabled again.
This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
the same ciphersuites as with "HIGH" alone, but in a specific
order where the PSK ciphersuites come first (since they are the
most recently disabled ciphersuites when "HIGH" is parsed).
Also, change ssl_create_cipher_list() (using this new
funcionality) such that between otherwise identical
cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
the default order.
[Bodo Moeller]
*) Change ssl_create_cipher_list() so that it automatically
arranges the ciphersuites in reasonable order before starting
to process the rule string. Thus, the definition for "DEFAULT"
(SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
This makes it much easier to arrive at a reasonable default order
in applications for which anonymous ciphers are OK (meaning
that you can't actually use DEFAULT).
[Bodo Moeller; suggested by Victor Duchovni]
*) Split the SSL/TLS algorithm mask (as used for ciphersuite string
processing) into multiple integers instead of setting
"SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
"SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
(These masks as well as the individual bit definitions are hidden
away into the non-exported interface ssl/ssl_locl.h, so this
change to the definition of the SSL_CIPHER structure shouldn't
affect applications.) This give us more bits for each of these
categories, so there is no longer a need to coagulate AES128 and
AES256 into a single algorithm bit, and to coagulate Camellia128
and Camellia256 into a single algorithm bit, which has led to all
kinds of kludges.
Thus, among other things, the kludge introduced in 0.9.7m and
0.9.8e for masking out AES256 independently of AES128 or masking
out Camellia256 independently of AES256 is not needed here in 0.9.9.
With the change, we also introduce new ciphersuite aliases that
so far were missing: "AES128", "AES256", "CAMELLIA128", and
"CAMELLIA256".
[Bodo Moeller]
*) Add support for dsa-with-SHA224 and dsa-with-SHA256.
Use the leftmost N bytes of the signature input if the input is
larger than the prime q (with N being the size in bytes of q).
[Nils Larsch]
*) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
it yet and it is largely untested.
[Steve Henson]
*) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
[Nils Larsch]
*) Initial incomplete changes to avoid need for function casts in OpenSSL
some compilers (gcc 4.2 and later) reject their use. Safestack is
reimplemented. Update ASN1 to avoid use of legacy functions.
[Steve Henson]
*) Win32/64 targets are linked with Winsock2.
[Andy Polyakov]
*) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
to external functions. This can be used to increase CRL handling
efficiency especially when CRLs are very large by (for example) storing
the CRL revoked certificates in a database.
[Steve Henson]
*) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
new CRLs added to a directory can be used. New command line option
-verify_return_error to s_client and s_server. This causes real errors
to be returned by the verify callback instead of carrying on no matter
what. This reflects the way a "real world" verify callback would behave.
[Steve Henson]
*) GOST engine, supporting several GOST algorithms and public key formats.
Kindly donated by Cryptocom.
[Cryptocom]
*) Partial support for Issuing Distribution Point CRL extension. CRLs
partitioned by DP are handled but no indirect CRL or reason partitioning
(yet). Complete overhaul of CRL handling: now the most suitable CRL is
selected via a scoring technique which handles IDP and AKID in CRLs.
[Steve Henson]
*) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
will ultimately be used for all verify operations: this will remove the
X509_STORE dependency on certificate verification and allow alternative
lookup methods. X509_STORE based implementations of these two callbacks.
[Steve Henson]