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OpenSSL CHANGES
_______________
Changes between 0.9.8h and 0.9.8i [xx XXX xxxx]
*) Fix a state transitition in s3_srvr.c and d1_srvr.c
(was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
[Nagendra Modadugu]
*) The fix in 0.9.8c that supposedly got rid of unsafe
double-checked locking was incomplete for RSA blinding,
addressing just one layer of what turns out to have been
doubly unsafe triple-checked locking.
So now fix this for real by retiring the MONT_HELPER macro
in crypto/rsa/rsa_eay.c.
[Bodo Moeller; problem pointed out by Marius Schilder]
*) Various precautionary measures:
- Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
- Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
(NB: This would require knowledge of the secret session ticket key
to exploit, in which case you'd be SOL either way.)
- Change bn_nist.c so that it will properly handle input BIGNUMs
outside the expected range.
- Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
builds.
[Neel Mehta, Bodo Moeller]
*) Add support for Local Machine Keyset attribute in PKCS#12 files.
[Steve Henson]
*) Fix BN_GF2m_mod_arr() top-bit cleanup code.
[Huang Ying]
*) Expand ENGINE to support engine supplied SSL client certificate functions.
This work was sponsored by Logica.
[Steve Henson]
*) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
keystores. Support for SSL/TLS client authentication too.
Not compiled unless enable-capieng specified to Configure.
This work was sponsored by Logica.
[Steve Henson]
*) Allow engines to be "soft loaded" - i.e. optionally don't die if
the load fails. Useful for distros.
[Ben Laurie and the FreeBSD team]
Changes between 0.9.8g and 0.9.8h [28 May 2008]
*) Fix flaw if 'Server Key exchange message' is omitted from a TLS
handshake which could lead to a cilent crash as found using the
Codenomicon TLS test suite (CVE-2008-1672)
[Steve Henson, Mark Cox]
*) Fix double free in TLS server name extensions which could lead to
a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
[Joe Orton]
*) Clear error queue in SSL_CTX_use_certificate_chain_file()
Clear the error queue to ensure that error entries left from
older function calls do not interfere with the correct operation.
[Lutz Jaenicke, Erik de Castro Lopo]
*) Remove root CA certificates of commercial CAs:
The OpenSSL project does not recommend any specific CA and does not
have any policy with respect to including or excluding any CA.
Therefore it does not make any sense to ship an arbitrary selection
of root CA certificates with the OpenSSL software.
[Lutz Jaenicke]
*) RSA OAEP patches to fix two separate invalid memory reads.
The first one involves inputs when 'lzero' is greater than
'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
before the beginning of from). The second one involves inputs where
the 'db' section contains nothing but zeroes (there is a one-byte
invalid read after the end of 'db').
[Ivan Nestlerode <[email protected]>]
*) Partial backport from 0.9.9-dev:
Introduce bn_mul_mont (dedicated Montgomery multiplication
procedure) as a candidate for BIGNUM assembler implementation.
While 0.9.9-dev uses assembler for various architectures, only
x86_64 is available by default here in the 0.9.8 branch, and
32-bit x86 is available through a compile-time setting.
To try the 32-bit x86 assembler implementation, use Configure
option "enable-montasm" (which exists only for this backport).
As "enable-montasm" for 32-bit x86 disclaims code stability
anyway, in this constellation we activate additional code
backported from 0.9.9-dev for further performance improvements,
namely BN_from_montgomery_word. (To enable this otherwise,
e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
[Andy Polyakov (backport partially by Bodo Moeller)]
*) Add TLS session ticket callback. This allows an application to set
TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
values. This is useful for key rollover for example where several key
sets may exist with different names.
[Steve Henson]
*) Reverse ENGINE-internal logic for caching default ENGINE handles.
This was broken until now in 0.9.8 releases, such that the only way
a registered ENGINE could be used (assuming it initialises
successfully on the host) was to explicitly set it as the default
for the relevant algorithms. This is in contradiction with 0.9.7
behaviour and the documentation. With this fix, when an ENGINE is
registered into a given algorithm's table of implementations, the
'uptodate' flag is reset so that auto-discovery will be used next
time a new context for that algorithm attempts to select an
implementation.
[Ian Lister (tweaked by Geoff Thorpe)]
*) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
implemention in the following ways:
Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
hard coded.
Lack of BER streaming support means one pass streaming processing is
only supported if data is detached: setting the streaming flag is
ignored for embedded content.
CMS support is disabled by default and must be explicitly enabled
with the enable-cms configuration option.
[Steve Henson]
*) Update the GMP engine glue to do direct copies between BIGNUM and
mpz_t when openssl and GMP use the same limb size. Otherwise the
existing "conversion via a text string export" trick is still used.
[Paul Sheer <[email protected]>]
*) Zlib compression BIO. This is a filter BIO which compressed and
uncompresses any data passed through it.
[Steve Henson]
*) Add AES_wrap_key() and AES_unwrap_key() functions to implement
RFC3394 compatible AES key wrapping.
[Steve Henson]
*) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
sets string data without copying. X509_ALGOR_set0() and
X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
from an X509_ATTRIBUTE structure optionally checking it occurs only
once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
data.
[Steve Henson]
*) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
to get the expected BN_FLG_CONSTTIME behavior.
[Bodo Moeller (Google)]
*) Netware support:
- fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
- fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
- added some more tests to do_tests.pl
- fixed RunningProcess usage so that it works with newer LIBC NDKs too
- removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
- added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
- various changes to netware.pl to enable gcc-cross builds on Win32
platform
- changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
- various changes to fix missing prototype warnings
- fixed x86nasm.pl to create correct asm files for NASM COFF output
- added AES, WHIRLPOOL and CPUID assembler code to build files
- added missing AES assembler make rules to mk1mf.pl
- fixed order of includes in apps/ocsp.c so that e_os.h settings apply
[Guenter Knauf <[email protected]>]
*) Implement certificate status request TLS extension defined in RFC3546.
A client can set the appropriate parameters and receive the encoded
OCSP response via a callback. A server can query the supplied parameters
and set the encoded OCSP response in the callback. Add simplified examples
to s_client and s_server.
[Steve Henson]
Changes between 0.9.8g and 0.9.8h-fips [xx XXX xxxx]
*) Add flag EVP_CIPH_FLAG_LENGTH_BITS to indicate that input buffer length
is in bits not bytes. The Monte Carlo FIPS140-2 CFB1 tests require this.
[Steve Henson]
*) Add option --with-fipslibdir to specify location of fipscanister.lib
and friends. When combined with fips build option fipscanister.lib is
not built but linked from the supplied directory. Always link fips
utilities against fiscanister.lib only except in fipsdso builds.
[Steve Henson]
*) Add SSE2 instruction support to WIN32 build. These will be compiled
by default and used if an appopriate CPU is detected. Some older versions
of NASM or MASM which don't support SSE2 will need to be updated.
[Steve Henson]
*) Tolerate DigestInfo structure with absent parameters in FIPS mode
(as required by several standards).
[Steve Henson]
*) Enhance mkfipsscr.pl to cope with different directory layouts. It now
relies on the filename and makes no assumptions about the pathname.
In the case of PSS it scans the file to determine the salt length.
Paths can be filtered. Also reports duplicate and missing files.
[Steve Henson]
*) Updates to WIN32 build system. Make use of AES assembly language routines.
Use assembly language routines in FIPS compilation.
[Steve Henson]
*) Use standard implementations of SHAx, DES, AES under crypto/ in FIPS
mode to avoid having to maintain two versions. This will also make use
of appropriate assembly language optimizations.
[Steve Henson]
*) Check for selftest status in all crypto operations and exit with a
fatal error if selftest failed.
[Steve Henson]
*) New flag in EVP_CIPHER: EVP_CIPH_FLAG_DEFAULT_ASN1. This will
automatically use EVP_CIPHER_{get,set}_asn1_iv and avoid the
need for any ASN1 dependencies in FIPS library. Move AES and 3DES
cipher definitions to fips library and modify AES and 3DES algorithm
tests and self tests to use EVP.
[Steve Henson]
*) Move EVP cipher code into enc_min.c to support a minimal implementation
for use by FIPS applications.
[Steve Henson]
*) Add algorithm config module. Currently just handles setting FIPS mode.
[Steve Henson]
*) Rewrite self tests and pairwise tests to use EVP. Add more extensive
self tests for RSA in all digests and modes.
[Steve Henson]
*) New flags RSA_FIPS_METHOD and DSA_FIPS_METHOD to indicate a method is
allowed in FIPS mode. Disable direct low level RSA and DSA signature
operations in FIPS mode so all operations have to be made via EVP.
[Steve Henson]
*) New flag EVP_MD_FLAG_SVCTX which passes EVP_MD_CTX and key to underlying
sign/verify method. This permits the method to perform finalization
and signing itself and have access to the EVP_MD_CTX structure in case
additional parameters are needed. Modify fips_{dsa,rsa}_{sign,verify}
to use EVP_MD_FLAG_SVCTX and support PSS and X9.31 RSA modes.
Modify RSA algorithm test programs to use new parameters.
[Steve Henson]
*) Add small standalone ASN1 encoder/decoder to handle DSA signature format.
Modify test, algorithm test and selftest routines to use EVP for DSA.
Move FIPS implementation of EVP_sha*() and EVP_dss1() under fips-1.0.
[Steve Henson]
*) Modify VC++ build system to rename .text and .rdata segments in
FIPS sources to .fipst${a,b,c}, and $fipsr${a,b,c} and place them
in a static library fipscanister.lib using a perl script. These are
then combined by the VC++ linker into a single segment in suffix
order but without the suffix (i.e. .fipstx, .fipsrd and .fipsda).
This serves the same purpose as fipscanister.o on other platforms
but has the advantage that it can be created using only standard VC++
utilities.
[Steve Henson and Andy Polyakov]
*) Modify WIN32 build system to forward references functions implemented
in FIPS DLL.
[Steve Henson]
*) Move error library so that all lhash dependencies are in a separate
file. Include a simplified ERR_get_state() function for stand alone
FIPS applications. Include a initialization function OPENSSL_init()
to set all callbacks, automatically call OPENSSL_init() once when
a cipher or digest is added. This should mean that almost all applications
set the callbacks automatically. Exceptional cases can call OPENSSL_init()
manually like this:
#ifdef OPENSSL_HAVE_INIT
OPENSSL_init();
#endif
before starting any threads.
[Steve Henson]
*) Collect common functions into header file "fips_utl.h".
[Steve Henson]
*) Only enable dynamic lock functionality in CRYPTO_lock() when it is really
needed. Move some lock functionality into new file dyn_lck.c .
This further reduces FIPS dependencies allowing the complete removal
of STACK and OBJ_bsearch().
[Steve Henson]
*) Reduce FIPS test program dependencies by providing stand alone
versions of some existing functions in libcrypto. Avoid use
of BIOs by converting to system stdio. Move some functions in FIPS
files: e.g. all use of BIO_printf().
[Steve Henson]
*) Modify build of libcrypto in FIPS mode by using a perl
script "arx.pl" which calls the archiver specifically
excluding any FIPS dependencies in libcrypto.
[Steve Henson]
*) Port OpenSSL 0.9.7 FIPS code to 0.9.8. Convert to new
Makefile form. Update Configure. Convert and update
FIPS source files. Update libcrypto, libssl and apps
with additional functionality from 0.9.7 FIPS code.
Update Windows build system.
[Steve Henson]
Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
*) Fix various bugs:
+ Binary incompatibility of ssl_ctx_st structure
+ DTLS interoperation with non-compliant servers
+ Don't call get_session_cb() without proposed session
+ Fix ia64 assembler code
[Andy Polyakov, Steve Henson]
Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
*) DTLS Handshake overhaul. There were longstanding issues with
OpenSSL DTLS implementation, which were making it impossible for
RFC 4347 compliant client to communicate with OpenSSL server.
Unfortunately just fixing these incompatibilities would "cut off"
pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
server keeps tolerating non RFC compliant syntax. The opposite is
not true, 0.9.8f client can not communicate with earlier server.
This update even addresses CVE-2007-4995.
[Andy Polyakov]
*) Changes to avoid need for function casts in OpenSSL: some compilers
(gcc 4.2 and later) reject their use.
[Kurt Roeckx <[email protected]>, Peter Hartley <[email protected]>,
Steve Henson]
*) 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]
*) Add initial support for TLS extensions, specifically for the server_name
extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
have new members for a host name. The SSL data structure has an
additional member SSL_CTX *initial_ctx so that new sessions can be
stored in that context to allow for session resumption, even after the
SSL has been switched to a new SSL_CTX in reaction to a client's
server_name extension.
New functions (subject to change):
SSL_get_servername()
SSL_get_servername_type()
SSL_set_SSL_CTX()
New CTRL codes and macros (subject to change):
SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
- SSL_CTX_set_tlsext_servername_callback()
SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
- SSL_CTX_set_tlsext_servername_arg()
SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
openssl s_client has a new '-servername ...' option.
openssl s_server has new options '-servername_host ...', '-cert2 ...',
'-key2 ...', '-servername_fatal' (subject to change). This allows
testing the HostName extension for a specific single host name ('-cert'
and '-key' remain fallbacks for handshakes without HostName
negotiation). If the unrecogninzed_name alert has to be sent, this by
default is a warning; it becomes fatal with the '-servername_fatal'
option.
[Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
*) Add AES and SSE2 assembly language support to VC++ build.
[Steve Henson]
*) Mitigate attack on final subtraction in Montgomery reduction.
[Andy Polyakov]
*) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
(which previously caused an internal error).
[Bodo Moeller]
*) Squeeze another 10% out of IGE mode when in != out.
[Ben Laurie]
*) AES IGE mode speedup.
[Dean Gaudet (Google)]
*) Add the Korean symmetric 128-bit cipher SEED (see
http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
add SEED ciphersuites from RFC 4162:
TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
To minimize changes between patchlevels in the OpenSSL 0.9.8
series, SEED remains excluded from compilation unless OpenSSL
is configured with 'enable-seed'.
[KISA, Bodo Moeller]
*) Mitigate branch prediction attacks, which can be practical if a
single processor is shared, allowing a spy process to extract
information. For detailed background information, see
http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
and Necessary Software Countermeasures"). The core of the change
are new versions BN_div_no_branch() and
BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
respectively, which are slower, but avoid the security-relevant
conditional branches. These are automatically called by BN_div()
and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
remove a conditional branch.
BN_FLG_CONSTTIME is the new name for the previous
BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
in the exponent causes BN_mod_exp_mont() to use the alternative
implementation in BN_mod_exp_mont_consttime().) The old name
remains as a deprecated alias.
Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
constant-time implementations for more than just exponentiation.
Here too the old name is kept as a deprecated alias.
BN_BLINDING_new() will now use BN_dup() for the modulus so that
the BN_BLINDING structure gets an independent copy of the
modulus. This means that the previous "BIGNUM *m" argument to
BN_BLINDING_new() and to BN_BLINDING_create_param() now
essentially becomes "const BIGNUM *m", although we can't actually
change this in the header file before 0.9.9. It allows
RSA_setup_blinding() to use BN_with_flags() on the modulus to
enable BN_FLG_CONSTTIME.
[Matthew D Wood (Intel Corp)]
*) In the SSL/TLS server implementation, be strict about session ID
context matching (which matters if an application uses a single
external cache for different purposes). Previously,
out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
set. This did ensure strict client verification, but meant that,
with applications using a single external cache for quite
different requirements, clients could circumvent ciphersuite
restrictions for a given session ID context by starting a session
in a different context.
[Bodo Moeller]
*) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
a ciphersuite string such as "DEFAULT:RSA" cannot enable
authentication-only ciphersuites.
[Bodo Moeller]
*) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
not complete and could lead to a possible single byte overflow
(CVE-2007-5135) [Ben Laurie]
Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
*) Since AES128 and AES256 (and similarly Camellia128 and
Camellia256) share a single mask bit in the logic of
ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
kludge to work properly if AES128 is available and AES256 isn't
(or if Camellia128 is available and Camellia256 isn't).
[Victor Duchovni]
*) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
(within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
When a point or a seed is encoded in a BIT STRING, we need to
prevent the removal of trailing zero bits to get the proper DER
encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
of a NamedBitList, for which trailing 0 bits need to be removed.)
[Bodo Moeller]
*) Have SSL/TLS server implementation tolerate "mismatched" record
protocol version while receiving ClientHello even if the
ClientHello is fragmented. (The server can't insist on the
particular protocol version it has chosen before the ServerHello
message has informed the client about his choice.)
[Bodo Moeller]
*) Add RFC 3779 support.
[Rob Austein for ARIN, Ben Laurie]
*) Load error codes if they are not already present instead of using a
static variable. This allows them to be cleanly unloaded and reloaded.
Improve header file function name parsing.
[Steve Henson]
*) extend SMTP and IMAP protocol emulation in s_client to use EHLO
or CAPABILITY handshake as required by RFCs.
[Goetz Babin-Ebell]
Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
*) Introduce limits to prevent malicious keys being able to
cause a denial of service. (CVE-2006-2940)
[Steve Henson, Bodo Moeller]
*) Fix ASN.1 parsing of certain invalid structures that can result
in a denial of service. (CVE-2006-2937) [Steve Henson]
*) Fix buffer overflow in SSL_get_shared_ciphers() function.
(CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
*) Fix SSL client code which could crash if connecting to a
malicious SSLv2 server. (CVE-2006-4343)
[Tavis Ormandy and Will Drewry, Google Security Team]
*) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
match only those. Before that, "AES256-SHA" would be interpreted
as a pattern and match "AES128-SHA" too (since AES128-SHA got
the same strength classification in 0.9.7h) as we currently only
have a single AES bit in the ciphersuite description bitmap.
That change, however, also applied to ciphersuite strings such as
"RC4-MD5" that intentionally matched multiple ciphersuites --
namely, SSL 2.0 ciphersuites in addition to the more common ones
from SSL 3.0/TLS 1.0.
So we change the selection algorithm again: Naming an explicit
ciphersuite selects this one ciphersuite, and any other similar
ciphersuite (same bitmap) from *other* protocol versions.
Thus, "RC4-MD5" again will properly select both the SSL 2.0
ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
Since SSL 2.0 does not have any ciphersuites for which the
128/256 bit distinction would be relevant, this works for now.
The proper fix will be to use different bits for AES128 and
AES256, which would have avoided the problems from the beginning;
however, bits are scarce, so we can only do this in a new release
(not just a patchlevel) when we can change the SSL_CIPHER
definition to split the single 'unsigned long mask' bitmap into
multiple values to extend the available space.
[Bodo Moeller]
Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
*) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
(CVE-2006-4339) [Ben Laurie and Google Security Team]
*) Add AES IGE and biIGE modes.
[Ben Laurie]
*) Change the Unix randomness entropy gathering to use poll() when
possible instead of select(), since the latter has some
undesirable limitations.
[Darryl Miles via Richard Levitte and Bodo Moeller]
*) Disable "ECCdraft" ciphersuites more thoroughly. Now special
treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
cannot be implicitly activated as part of, e.g., the "AES" alias.
However, please upgrade to OpenSSL 0.9.9[-dev] for
non-experimental use of the ECC ciphersuites to get TLS extension
support, which is required for curve and point format negotiation
to avoid potential handshake problems.
[Bodo Moeller]
*) Disable rogue ciphersuites:
- SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
- SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
- SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
The latter two were purportedly from
draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
appear there.
Also deactivate the remaining ciphersuites from
draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
unofficial, and the ID has long expired.
[Bodo Moeller]
*) Fix RSA blinding Heisenbug (problems sometimes occured on
dual-core machines) and other potential thread-safety issues.
[Bodo Moeller]
*) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
versions), which is now available for royalty-free use
(see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
Also, add Camellia TLS ciphersuites from RFC 4132.
To minimize changes between patchlevels in the OpenSSL 0.9.8
series, Camellia remains excluded from compilation unless OpenSSL
is configured with 'enable-camellia'.
[NTT]
*) Disable the padding bug check when compression is in use. The padding
bug check assumes the first packet is of even length, this is not
necessarily true if compresssion is enabled and can result in false
positives causing handshake failure. The actual bug test is ancient
code so it is hoped that implementations will either have fixed it by
now or any which still have the bug do not support compression.
[Steve Henson]
Changes between 0.9.8a and 0.9.8b [04 May 2006]
*) When applying a cipher rule check to see if string match is an explicit
cipher suite and only match that one cipher suite if it is.
[Steve Henson]
*) Link in manifests for VC++ if needed.
[Austin Ziegler <[email protected]>]
*) Update support for ECC-based TLS ciphersuites according to
draft-ietf-tls-ecc-12.txt with proposed changes (but without
TLS extensions, which are supported starting with the 0.9.9
branch, not in the OpenSSL 0.9.8 branch).
[Douglas Stebila]
*) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
opaque EVP_CIPHER_CTX handling.
[Steve Henson]
*) Fixes and enhancements to zlib compression code. We now only use
"zlib1.dll" and use the default __cdecl calling convention on Win32
to conform with the standards mentioned here:
http://www.zlib.net/DLL_FAQ.txt
Static zlib linking now works on Windows and the new --with-zlib-include
--with-zlib-lib options to Configure can be used to supply the location
of the headers and library. Gracefully handle case where zlib library
can't be loaded.
[Steve Henson]
*) Several fixes and enhancements to the OID generation code. The old code
sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
handle numbers larger than ULONG_MAX, truncated printing and had a
non standard OBJ_obj2txt() behaviour.
[Steve Henson]
*) Add support for building of engines under engine/ as shared libraries
under VC++ build system.
[Steve Henson]
*) Corrected the numerous bugs in the Win32 path splitter in DSO.
Hopefully, we will not see any false combination of paths any more.
[Richard Levitte]
Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
*) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
(part of SSL_OP_ALL). This option used to disable the
countermeasure against man-in-the-middle protocol-version
rollback in the SSL 2.0 server implementation, which is a bad
idea. (CVE-2005-2969)
[Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
for Information Security, National Institute of Advanced Industrial
Science and Technology [AIST], Japan)]
*) Add two function to clear and return the verify parameter flags.
[Steve Henson]
*) Keep cipherlists sorted in the source instead of sorting them at
runtime, thus removing the need for a lock.
[Nils Larsch]
*) Avoid some small subgroup attacks in Diffie-Hellman.
[Nick Mathewson and Ben Laurie]
*) Add functions for well-known primes.
[Nick Mathewson]
*) Extended Windows CE support.
[Satoshi Nakamura and Andy Polyakov]
*) Initialize SSL_METHOD structures at compile time instead of during
runtime, thus removing the need for a lock.
[Steve Henson]
*) Make PKCS7_decrypt() work even if no certificate is supplied by
attempting to decrypt each encrypted key in turn. Add support to
smime utility.
[Steve Henson]
Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
[NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
OpenSSL 0.9.8.]
*) Add libcrypto.pc and libssl.pc for those who feel they need them.
[Richard Levitte]
*) Change CA.sh and CA.pl so they don't bundle the CSR and the private
key into the same file any more.
[Richard Levitte]
*) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
[Andy Polyakov]
*) Add -utf8 command line and config file option to 'ca'.
[Stefan <[email protected]]
*) Removed the macro des_crypt(), as it seems to conflict with some
libraries. Use DES_crypt().
[Richard Levitte]
*) Correct naming of the 'chil' and '4758cca' ENGINEs. This
involves renaming the source and generated shared-libs for
both. The engines will accept the corrected or legacy ids
('ncipher' and '4758_cca' respectively) when binding. NB,
this only applies when building 'shared'.
[Corinna Vinschen <[email protected]> and Geoff Thorpe]
*) Add attribute functions to EVP_PKEY structure. Modify
PKCS12_create() to recognize a CSP name attribute and
use it. Make -CSP option work again in pkcs12 utility.
[Steve Henson]
*) 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 <[email protected]> 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 <[email protected]>, 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