ref: 09b250f079e38883e8ad5dc47e4aa93258e0c083
dir: /sys/src/ape/lib/openssl/CHANGES/
OpenSSL CHANGES
_______________
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]
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 M�ller]
*) 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 M�ller]
*) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
that can only be obtained through BN_CTX_new() (which implicitly
initialises it). The presence of this function only made it possible
to overwrite an existing structure (and cause memory leaks).
[Geoff Thorpe]
*) Because of the callback-based approach for implementing LHASH as a
template type, lh_insert() adds opaque objects to hash-tables and
lh_doall() or lh_doall_arg() are typically used with a destructor callback
to clean up those corresponding objects before destroying the hash table
(and losing the object pointers). So some over-zealous constifications in
LHASH have been relaxed so that lh_insert() does not take (nor store) the
objects as "const" and the lh_doall[_arg] callback wrappers are not
prototyped to have "const" restrictions on the object pointers they are
given (and so aren't required to cast them away any more).
[Geoff Thorpe]
*) The tmdiff.h API was so ugly and minimal that our own timing utility
(speed) prefers to use its own implementation. The two implementations
haven't been consolidated as yet (volunteers?) but the tmdiff API has had
its object type properly exposed (MS_TM) instead of casting to/from "char
*". This may still change yet if someone realises MS_TM and "ms_time_***"
aren't necessarily the greatest nomenclatures - but this is what was used
internally to the implementation so I've used that for now.
[Geoff Thorpe]
*) Ensure that deprecated functions do not get compiled when
OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
the self-tests were still using deprecated key-generation functions so
these have been updated also.
[Geoff Thorpe]
*) Reorganise PKCS#7 code to separate the digest location functionality
into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
New function PKCS7_set_digest() to set the digest type for PKCS#7
digestedData type. Add additional code to correctly generate the
digestedData type and add support for this type in PKCS7 initialization
functions.
[Steve Henson]
*) New function PKCS7_set0_type_other() this initializes a PKCS7
structure of type "other".
[Steve Henson]
*) Fix prime generation loop in crypto/bn/bn_prime.pl by making
sure the loop does correctly stop and breaking ("division by zero")
modulus operations are not performed. The (pre-generated) prime
table crypto/bn/bn_prime.h was already correct, but it could not be
re-generated on some platforms because of the "division by zero"
situation in the script.
[Ralf S. Engelschall]
*) Update support for ECC-based TLS ciphersuites according to
draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
SHA-1 now is only used for "small" curves (where the
representation of a field element takes up to 24 bytes); for
larger curves, the field element resulting from ECDH is directly
used as premaster secret.
[Douglas Stebila (Sun Microsystems Laboratories)]
*) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
curve secp160r1 to the tests.
[Douglas Stebila (Sun Microsystems Laboratories)]
*) Add the possibility to load symbols globally with DSO.
[G�tz Babin-Ebell <[email protected]> via Richard Levitte]
*) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
control of the error stack.
[Richard Levitte]
*) Add support for STORE in ENGINE.
[Richard Levitte]
*) Add the STORE type. The intention is to provide a common interface
to certificate and key stores, be they simple file-based stores, or
HSM-type store, or LDAP stores, or...
NOTE: The code is currently UNTESTED and isn't really used anywhere.
[Richard Levitte]
*) Add a generic structure called OPENSSL_ITEM. This can be used to
pass a list of arguments to any function as well as provide a way
for a function to pass data back to the caller.
[Richard Levitte]
*) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
works like BUF_strdup() but can be used to duplicate a portion of
a string. The copy gets NUL-terminated. BUF_memdup() duplicates
a memory area.
[Richard Levitte]
*) Add the function sk_find_ex() which works like sk_find(), but will
return an index to an element even if an exact match couldn't be
found. The index is guaranteed to point at the element where the
searched-for key would be inserted to preserve sorting order.
[Richard Levitte]
*) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
takes an extra flags argument for optional functionality. Currently,
the following flags are defined:
OBJ_BSEARCH_VALUE_ON_NOMATCH
This one gets OBJ_bsearch_ex() to return a pointer to the first
element where the comparing function returns a negative or zero
number.
OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
This one gets OBJ_bsearch_ex() to return a pointer to the first
element where the comparing function returns zero. This is useful
if there are more than one element where the comparing function
returns zero.
[Richard Levitte]
*) Make it possible to create self-signed certificates with 'openssl ca'
in such a way that the self-signed certificate becomes part of the
CA database and uses the same mechanisms for serial number generation
as all other certificate signing. The new flag '-selfsign' enables
this functionality. Adapt CA.sh and CA.pl.in.
[Richard Levitte]
*) Add functionality to check the public key of a certificate request
against a given private. This is useful to check that a certificate
request can be signed by that key (self-signing).
[Richard Levitte]
*) Make it possible to have multiple active certificates with the same
subject in the CA index file. This is done only if the keyword
'unique_subject' is set to 'no' in the main CA section (default
if 'CA_default') of the configuration file. The value is saved
with the database itself in a separate index attribute file,
named like the index file with '.attr' appended to the name.
[Richard Levitte]
*) Generate muti valued AVAs using '+' notation in config files for
req and dirName.
[Steve Henson]
*) Support for nameConstraints certificate extension.
[Steve Henson]
*) Support for policyConstraints certificate extension.
[Steve Henson]
*) Support for policyMappings certificate extension.
[Steve Henson]
*) Make sure the default DSA_METHOD implementation only uses its
dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
and change its own handlers to be NULL so as to remove unnecessary
indirection. This lets alternative implementations fallback to the
default implementation more easily.
[Geoff Thorpe]
*) Support for directoryName in GeneralName related extensions
in config files.
[Steve Henson]
*) Make it possible to link applications using Makefile.shared.
Make that possible even when linking against static libraries!
[Richard Levitte]
*) Support for single pass processing for S/MIME signing. This now
means that S/MIME signing can be done from a pipe, in addition
cleartext signing (multipart/signed type) is effectively streaming
and the signed data does not need to be all held in memory.
This is done with a new flag PKCS7_STREAM. When this flag is set
PKCS7_sign() only initializes the PKCS7 structure and the actual signing
is done after the data is output (and digests calculated) in
SMIME_write_PKCS7().
[Steve Henson]
*) Add full support for -rpath/-R, both in shared libraries and
applications, at least on the platforms where it's known how
to do it.
[Richard Levitte]
*) In crypto/ec/ec_mult.c, implement fast point multiplication with
precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
will now compute a table of multiples of the generator that
makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
faster (notably in the case of a single point multiplication,
scalar * generator).
[Nils Larsch, Bodo Moeller]
*) IPv6 support for certificate extensions. The various extensions
which use the IP:a.b.c.d can now take IPv6 addresses using the
formats of RFC1884 2.2 . IPv6 addresses are now also displayed
correctly.
[Steve Henson]
*) Added an ENGINE that implements RSA by performing private key
exponentiations with the GMP library. The conversions to and from
GMP's mpz_t format aren't optimised nor are any montgomery forms
cached, and on x86 it appears OpenSSL's own performance has caught up.
However there are likely to be other architectures where GMP could
provide a boost. This ENGINE is not built in by default, but it can be
specified at Configure time and should be accompanied by the necessary
linker additions, eg;
./config -DOPENSSL_USE_GMP -lgmp
[Geoff Thorpe]
*) "openssl engine" will not display ENGINE/DSO load failure errors when
testing availability of engines with "-t" - the old behaviour is
produced by increasing the feature's verbosity with "-tt".
[Geoff Thorpe]
*) ECDSA routines: under certain error conditions uninitialized BN objects
could be freed. Solution: make sure initialization is performed early
enough. (Reported and fix supplied by Nils Larsch <[email protected]>
via PR#459)
[Lutz Jaenicke]
*) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
and DH_METHOD (eg. by ENGINE implementations) to override the normal
software implementations. For DSA and DH, parameter generation can
also be overriden by providing the appropriate method callbacks.
[Geoff Thorpe]
*) Change the "progress" mechanism used in key-generation and
primality testing to functions that take a new BN_GENCB pointer in
place of callback/argument pairs. The new API functions have "_ex"
postfixes and the older functions are reimplemented as wrappers for
the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
declarations of the old functions to help (graceful) attempts to
migrate to the new functions. Also, the new key-generation API
functions operate on a caller-supplied key-structure and return
success/failure rather than returning a key or NULL - this is to
help make "keygen" another member function of RSA_METHOD etc.
Example for using the new callback interface:
int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
void *my_arg = ...;
BN_GENCB my_cb;
BN_GENCB_set(&my_cb, my_callback, my_arg);
return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
/* For the meaning of a, b in calls to my_callback(), see the
* documentation of the function that calls the callback.
* cb will point to my_cb; my_arg can be retrieved as cb->arg.
* my_callback should return 1 if it wants BN_is_prime_ex()
* to continue, or 0 to stop.
*/
[Geoff Thorpe]
*) Change the ZLIB compression method to be stateful, and make it
available to TLS with the number defined in
draft-ietf-tls-compression-04.txt.
[Richard Levitte]
*) Add the ASN.1 structures and functions for CertificatePair, which
is defined as follows (according to X.509_4thEditionDraftV6.pdf):
CertificatePair ::= SEQUENCE {
forward [0] Certificate OPTIONAL,
reverse [1] Certificate OPTIONAL,
-- at least one of the pair shall be present -- }
Also implement the PEM functions to read and write certificate
pairs, and defined the PEM tag as "CERTIFICATE PAIR".
This needed to be defined, mostly for the sake of the LDAP
attribute crossCertificatePair, but may prove useful elsewhere as
well.
[Richard Levitte]
*) Make it possible to inhibit symlinking of shared libraries in
Makefile.shared, for Cygwin's sake.
[Richard Levitte]
*) 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);
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).
EC_GROUP_new_curve_GFp() will now automatically use this
if applicable.
[Nils Larsch <[email protected]>]
*) Add new lock type (CRYPTO_LOCK_BN).
[Bodo Moeller]
*) Change the ENGINE framework to automatically load engines
dynamically from specific directories unless they could be
found to already be built in or loaded. Move all the
current engines except for the cryptodev one to a new
directory engines/.
The engines in engines/ are built as shared libraries if
the "shared" options was given to ./Configure or ./config.
Otherwise, they are inserted in libcrypto.a.
/usr/local/ssl/engines is the default directory for dynamic
engines, but that can be overriden at configure time through
the usual use of --prefix and/or --openssldir, and at run
time with the environment variable OPENSSL_ENGINES.
[Geoff Thorpe and Richard Levitte]
*) Add Makefile.shared, a helper makefile to build shared
libraries. Addapt Makefile.org.
[Richard Levitte]
*) Add version info to Win32 DLLs.
[Peter 'Luna' Runestig" <[email protected]>]
*) Add new 'medium level' PKCS#12 API. Certificates and keys
can be added using this API to created arbitrary PKCS#12
files while avoiding the low level API.
New options to PKCS12_create(), key or cert can be NULL and
will then be omitted from the output file. The encryption
algorithm NIDs can be set to -1 for no encryption, the mac
iteration count can be set to 0 to omit the mac.
Enhance pkcs12 utility by making the -nokeys and -nocerts
options work when creating a PKCS#12 file. New option -nomac
to omit the mac, NONE can be set for an encryption algorithm.
New code is modified to use the enhanced PKCS12_create()
instead of the low level API.
[Steve Henson]
*) Extend ASN1 encoder to support indefinite length constructed
encoding. This can output sequences tags and octet strings in
this form. Modify pk7_asn1.c to support indefinite length
encoding. This is experimental and needs additional code to
be useful, such as an ASN1 bio and some enhanced streaming
PKCS#7 code.
Extend template encode functionality so that tagging is passed
down to the template encoder.
[Steve Henson]
*) Let 'openssl req' fail if an argument to '-newkey' is not
recognized instead of using RSA as a default.
[Bodo Moeller]
*) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
As these are not official, they are not included in "ALL";
the "ECCdraft" ciphersuite group alias can be used to select them.
[Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
*) Add ECDH engine support.
[Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
*) Add ECDH in new directory crypto/ecdh/.
[Douglas Stebila (Sun Microsystems Laboratories)]
*) Let BN_rand_range() abort with an error after 100 iterations
without success (which indicates a broken PRNG).
[Bodo Moeller]
*) Change BN_mod_sqrt() so that it verifies that the input value
is really the square of the return value. (Previously,
BN_mod_sqrt would show GIGO behaviour.)
[Bodo Moeller]
*) Add named elliptic curves over binary fields from X9.62, SECG,
and WAP/WTLS; add OIDs that were still missing.
[Sheueling Chang Shantz and Douglas Stebila
(Sun Microsystems Laboratories)]
*) Extend the EC library for elliptic curves over binary fields
(new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
New EC_METHOD:
EC_GF2m_simple_method
New API functions:
EC_GROUP_new_curve_GF2m
EC_GROUP_set_curve_GF2m
EC_GROUP_get_curve_GF2m
EC_POINT_set_affine_coordinates_GF2m
EC_POINT_get_affine_coordinates_GF2m
EC_POINT_set_compressed_coordinates_GF2m
Point compression for binary fields is disabled by default for
patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
enable it).
As binary polynomials are represented as BIGNUMs, various members
of the EC_GROUP and EC_POINT data structures can be shared
between the implementations for prime fields and binary fields;
the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
are essentially identical to their ..._GFp counterparts.
(For simplicity, the '..._GFp' prefix has been dropped from
various internal method names.)
An internal 'field_div' method (similar to 'field_mul' and
'field_sqr') has been added; this is used only for binary fields.
[Sheueling Chang Shantz and Douglas Stebila
(Sun Microsystems Laboratories)]
*) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
through methods ('mul', 'precompute_mult').
The generic implementations (now internally called 'ec_wNAF_mul'
and 'ec_wNAF_precomputed_mult') remain the default if these
methods are undefined.
[Sheueling Chang Shantz and Douglas Stebila
(Sun Microsystems Laboratories)]
*) New function EC_GROUP_get_degree, which is defined through
EC_METHOD. For curves over prime fields, this returns the bit
length of the modulus.
[Sheueling Chang Shantz and Douglas Stebila
(Sun Microsystems Laboratories)]
*) New functions EC_GROUP_dup, EC_POINT_dup.
(These simply call ..._new and ..._copy).
[Sheueling Chang Shantz and Douglas Stebila
(Sun Microsystems Laboratories)]
*) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
Polynomials are represented as BIGNUMs (where the sign bit is not
used) in the following functions [macros]:
BN_GF2m_add
BN_GF2m_sub [= BN_GF2m_add]
BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
BN_GF2m_mod_inv
BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
BN_GF2m_cmp [= BN_ucmp]
(Note that only the 'mod' functions are actually for fields GF(2^m).
BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
For some functions, an the irreducible polynomial defining a
field can be given as an 'unsigned int[]' with strictly
decreasing elements giving the indices of those bits that are set;
i.e., p[] represents the polynomial
f(t) = t^p[0] + t^p[1] + ... + t^p[k]
where
p[0] > p[1] > ... > p[k] = 0.
This applies to the following functions:
BN_GF2m_mod_arr
BN_GF2m_mod_mul_arr
BN_GF2m_mod_sqr_arr
BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
BN_GF2m_mod_exp_arr
BN_GF2m_mod_sqrt_arr
BN_GF2m_mod_solve_quad_arr
BN_GF2m_poly2arr
BN_GF2m_arr2poly
Conversion can be performed by the following functions:
BN_GF2m_poly2arr
BN_GF2m_arr2poly
bntest.c has additional tests for binary polynomial arithmetic.
Two implementations for BN_GF2m_mod_div() are available.
The default algorithm simply uses BN_GF2m_mod_inv() and
BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
copyright notice in crypto/bn/bn_gf2m.c before enabling it).
[Sheueling Chang Shantz and Douglas Stebila
(Sun Microsystems Laboratories)]
*) Add new error code 'ERR_R_DISABLED' that can be used when some
functionality is disabled at compile-time.
[Douglas Stebila <[email protected]>]
*) Change default behaviour of 'openssl asn1parse' so that more
information is visible when viewing, e.g., a certificate:
Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
mode the content of non-printable OCTET STRINGs is output in a
style similar to INTEGERs, but with '[HEX DUMP]' prepended to
avoid the appearance of a printable string.
[Nils Larsch <[email protected]>]
*) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
functions
EC_GROUP_set_asn1_flag()
EC_GROUP_get_asn1_flag()
EC_GROUP_set_point_conversion_form()
EC_GROUP_get_point_conversion_form()
These control ASN1 encoding details:
- Curves (i.e., groups) are encoded explicitly unless asn1_flag
has been set to OPENSSL_EC_NAMED_CURVE.
- Points are encoded in uncompressed form by default; options for
asn1_for are as for point2oct, namely
POINT_CONVERSION_COMPRESSED
POINT_CONVERSION_UNCOMPRESSED
POINT_CONVERSION_HYBRID
Also add 'seed' and 'seed_len' members to EC_GROUP with access
functions
EC_GROUP_set_seed()
EC_GROUP_get0_seed()
EC_GROUP_get_seed_len()
This is used only for ASN1 purposes (so far).
[Nils Larsch <[email protected]>]
*) Add 'field_type' member to EC_METHOD, which holds the NID
of the appropriate field type OID. The new function
EC_METHOD_get_field_type() returns this value.
[Nils Larsch <[email protected]>]
*) Add functions
EC_POINT_point2bn()
EC_POINT_bn2point()
EC_POINT_point2hex()
EC_POINT_hex2point()
providing useful interfaces to EC_POINT_point2oct() and
EC_POINT_oct2point().
[Nils Larsch <[email protected]>]
*) Change internals of the EC library so that the functions
EC_GROUP_set_generator()
EC_GROUP_get_generator()
EC_GROUP_get_order()
EC_GROUP_get_cofactor()
are implemented directly in crypto/ec/ec_lib.c and not dispatched
to methods, which would lead to unnecessary code duplication when
adding different types of curves.
[Nils Larsch <[email protected]> with input by Bodo Moeller]
*) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
arithmetic, and such that modified wNAFs are generated
(which avoid length expansion in many cases).
[Bodo Moeller]
*) Add a function EC_GROUP_check_discriminant() (defined via
EC_METHOD) that verifies that the curve discriminant is non-zero.
Add a function EC_GROUP_check() that makes some sanity tests
on a EC_GROUP, its generator and order. This includes
EC_GROUP_check_discriminant().
[Nils Larsch <[email protected]>]
*) Add ECDSA in new directory crypto/ecdsa/.
Add applications 'openssl ecparam' and 'openssl ecdsa'
(these are based on 'openssl dsaparam' and 'openssl dsa').
ECDSA support is also included in various other files across the
library. Most notably,
- 'openssl req' now has a '-newkey ecdsa:file' option;
- EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
- X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
them suitable for ECDSA where domain parameters must be
extracted before the specific public key;
- ECDSA engine support has been added.
[Nils Larsch <[email protected]>]
*) 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_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_curve_name()
EC_GROUP_get_curve_name()
[Nils Larsch <[email protected], 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()
required a small change in bn_mul_part_recursive() and the addition
of the functions bn_cmp_part_words(), bn_sub_part_words() and
bn_add_part_words(), which do the same thing as bn_cmp_words(),
bn_sub_words() and bn_add_words() except they take arrays with
differing sizes.
[Richard Levitte]
Changes between 0.9.7m and 0.9.7n [xx XXX xxxx]
*) 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]
Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
*) Cleanse PEM buffers before freeing them since they may contain
sensitive data.
[Benjamin Bennett <[email protected]>]
*) 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]
*) Since AES128 and AES256 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.
[Victor Duchovni]
*) Expand security boundary to match 1.1.1 module.
[Steve Henson]
*) Remove redundant features: hash file source, editing of test vectors
modify fipsld to use external fips_premain.c signature.
[Steve Henson]
*) New perl script mkfipsscr.pl to create shell scripts or batch files to
run algorithm test programs.
[Steve Henson]
*) Make algorithm test programs more tolerant of whitespace.
[Steve Henson]
*) 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]
*) Load error codes if they are not already present instead of using a
static variable. This allows them to be cleanly unloaded and reloaded.
[Steve Henson]
Changes between 0.9.7k and 0.9.7l [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]
*) Change ciphersuite string processing so that an explicit
ciphersuite selects this one ciphersuite (so that "AES256-SHA"
will no longer include "AES128-SHA"), and any other similar
ciphersuite (same bitmap) from *other* protocol versions (so that
"RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
changes from 0.9.8b and 0.9.8d.
[Bodo Moeller]
Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
*) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
(CVE-2006-4339) [Ben Laurie and Google Security Team]
*) 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 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 deactive 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]
Changes between 0.9.7i and 0.9.7j [04 May 2006]
*) Adapt fipsld and the build system to link against the validated FIPS
module in FIPS mode.
[Steve Henson]
*) Fixes for VC++ 2005 build under Windows.
[Steve Henson]
*) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
from a Windows bash shell such as MSYS. It is autodetected from the
"config" script when run from a VC++ environment. Modify standard VC++
build to use fipscanister.o from the GNU make build.
[Steve Henson]
Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
*) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
The value now differs depending on if you build for FIPS or not.
BEWARE! A program linked with a shared FIPSed libcrypto can't be
safely run with a non-FIPSed libcrypto, as it may crash because of
the difference induced by this change.
[Andy Polyakov]
Changes between 0.9.7g and 0.9.7h [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)]
*) Minimal support for X9.31 signatures and PSS padding modes. This is
mainly for FIPS compliance and not fully integrated at this stage.
[Steve Henson]
*) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
the exponentiation using a fixed-length exponent. (Otherwise,
the information leaked through timing could expose the secret key
after many signatures; cf. Bleichenbacher's attack on DSA with
biased k.)
[Bodo Moeller]
*) Make a new fixed-window mod_exp implementation the default for
RSA, DSA, and DH private-key operations so that the sequence of
squares and multiplies and the memory access pattern are
independent of the particular secret key. This will mitigate
cache-timing and potential related attacks.
BN_mod_exp_mont_consttime() is the new exponentiation implementation,
and this is automatically used by BN_mod_exp_mont() if the new flag
BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
will use this BN flag for private exponents unless the flag
RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
[Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
*) Change the client implementation for SSLv23_method() and
SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
(Previously, the SSL 2.0 backwards compatible Client Hello
message format would be used even with SSL_OP_NO_SSLv2.)
[Bodo Moeller]
*) 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]
[NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
OpenSSL 0.9.8.]
*) 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 M�ller]
*) 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 M�ller]
*) Fix hang in EGD/PRNGD query when communication socket is closed
prematurely by EGD/PRNGD.
[Darren Tucker <[email protected]> via Lutz J�nicke, 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 <[email protected]>, 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 <[email protected]>]
*) 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 (CVE-2004-0079)
[Joe Orton, Steve Henson]
*) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
(CVE-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 <[email protected]>]
*) 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 (CVE-2003-0543 and CVE-2003-0544).
Free up ASN1_TYPE correctly if ANY type is invalid (CVE-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).
[Bodo Moeller; problem pointed out by Matthias Loepfe]
*) Change X509_certificate_type() to mark the key as exported/exportable
when it's 512 *bits* long, not 512 bytes.
[Richard Levitte]
*) Change AES_cbc_encrypt() so it outputs exact multiple of
blocks during encryption.
[Richard Levitte]
*) Various fixes to base64 BIO and non blocking I/O. On write
flushes were not handled properly if the BIO retried. On read
data was not being buffered properly and had various logic bugs.
This also affects blocking I/O when the data being decoded is a
certain size.
[Steve Henson]
*) Various S/MIME bugfixes and compatibility changes:
output correct application/pkcs7 MIME type if
PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
of files as .eml work). Correctly handle very long lines in MIME
parser.
[Steve Henson]
Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
*) Countermeasure against the Klima-Pokorny-Rosa extension of
Bleichbacher's attack on PKCS #1 v1.5 padding: treat
a protocol version number mismatch like a decryption error
in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
[Bodo Moeller]
*) Turn on RSA blinding by default in the default implementation
to avoid a timing attack. Applications that don't want it can call
RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
They would be ill-advised to do so in most cases.
[Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
*) Change RSA blinding code so that it works when the PRNG is not
seeded (in this case, the secret RSA exponent is abused as
an unpredictable seed -- if it is not unpredictable, there
is no point in blinding anyway). Make RSA blinding thread-safe
by remembering the creator's thread ID in rsa->blinding and
having all other threads use local one-time blinding factors
(this requires more computation than sharing rsa->blinding, but
avoids excessive locking; and if an RSA object is not shared
between threads, blinding will still be very fast).
[Bodo Moeller]
*) 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.
[Ulf Moeller]
Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
*) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
via timing by performing a MAC computation even if incorrrect
block cipher padding has been found. This is a countermeasure
against active attacks where the attacker has to distinguish
between bad padding and a MAC verification error. (CVE-2003-0078)
[Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
Martin Vuagnoux (EPFL, Ilion)]
*) Make the no-err option work as intended. The intention with no-err
is not to have the whole error stack handling routines removed from
libcrypto, it's only intended to remove all the function name and
reason texts, thereby removing some of the footprint that may not
be interesting if those errors aren't displayed anyway.
NOTE: it's still possible for any application or module to have it's
own set of error texts inserted. The routines are there, just not
used by default when no-err is given.
[Richard Levitte]
*) Add support for FreeBSD on IA64.
[[email protected] via Richard Levitte, resolves #454]
*) Adjust DES_cbc_cksum() so it returns the same value as the MIT
Kerberos function mit_des_cbc_cksum(). Before this change,
the value returned by DES_cbc_cksum() was like the one from
mit_des_cbc_cksum(), except the bytes were swapped.
[Kevin Greaney <[email protected]> and Richard Levitte]
*) Allow an application to disable the automatic SSL chain building.
Before this a rather primitive chain build was always performed in
ssl3_output_cert_chain(): an application had no way to send the
correct chain if the automatic operation produced an incorrect result.
Now the chain builder is disabled if either:
1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
The reasoning behind this is that an application would not want the
auto chain building to take place if extra chain certificates are
present and it might also want a means of sending no additional
certificates (for example the chain has two certificates and the
root is omitted).
[Steve Henson]
*) Add the possibility to build without the ENGINE framework.
[Steven Reddie <[email protected]> via Richard Levitte]
*) Under Win32 gmtime() can return NULL: check return value in
OPENSSL_gmtime(). Add error code for case where gmtime() fails.
[Steve Henson]
*) DSA routines: under certain error conditions uninitialized BN objects
could be freed. Solution: make sure initialization is performed early
enough. (Reported and fix supplied by Ivan D Nestlerode <[email protected]>,
Nils Larsch <[email protected]> via PR#459)
[Lutz Jaenicke]
*) Another fix for SSLv2 session ID handling: the session ID was incorrectly
checked on reconnect on the client side, therefore session resumption
could still fail with a "ssl session id is different" error. This
behaviour is masked when SSL_OP_ALL is used due to
SSL_OP_MICROSOFT_SESS_ID_BUG being set.
Behaviour observed by Crispin Flowerday <[email protected]> as
followup to PR #377.
[Lutz Jaenicke]
*) IA-32 assembler support enhancements: unified ELF targets, support
for SCO/Caldera platforms, fix for Cygwin shared build.
[Andy Polyakov]
*) Add support for FreeBSD on sparc64. As a consequence, support for
FreeBSD on non-x86 processors is separate from x86 processors on
the config script, much like the NetBSD support.
[Richard Levitte & Kris Kennaway <[email protected]>]
Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
[NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
OpenSSL 0.9.7.]
*) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
code (06) was taken as the first octet of the session ID and the last
octet was ignored consequently. As a result SSLv2 client side session
caching could not have worked due to the session ID mismatch between
client and server.
Behaviour observed by Crispin Flowerday <[email protected]> as
PR #377.
[Lutz Jaenicke]
*) Change the declaration of needed Kerberos libraries to use EX_LIBS
instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
removed entirely.
[Richard Levitte]
*) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
seems that in spite of existing for more than a year, many application
author have done nothing to provide the necessary callbacks, which
means that this particular engine will not work properly anywhere.
This is a very unfortunate situation which forces us, in the name
of usability, to give the hw_ncipher.c a static lock, which is part
of libcrypto.
NOTE: This is for the 0.9.7 series ONLY. This hack will never
appear in 0.9.8 or later. We EXPECT application authors to have
dealt properly with this when 0.9.8 is released (unless we actually
make such changes in the libcrypto locking code that changes will
have to be made anyway).
[Richard Levitte]
*) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
octets have been read, EOF or an error occurs. Without this change
some truncated ASN1 structures will not produce an error.
[Steve Henson]
*) Disable Heimdal support, since it hasn't been fully implemented.
Still give the possibility to force the use of Heimdal, but with
warnings and a request that patches get sent to openssl-dev.
[Richard Levitte]
*) Add the VC-CE target, introduce the WINCE sysname, and add
INSTALL.WCE and appropriate conditionals to make it build.
[Steven Reddie <[email protected]> via Richard Levitte]
*) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
cygssl-x.y.z.dll, where x, y and z are the major, minor and
edit numbers of the version.
[Corinna Vinschen <[email protected]> and Richard Levitte]
*) Introduce safe string copy and catenation functions
(BUF_strlcpy() and BUF_strlcat()).
[Ben Laurie (CHATS) and Richard Levitte]
*) Avoid using fixed-size buffers for one-line DNs.
[Ben Laurie (CHATS)]
*) Add BUF_MEM_grow_clean() to avoid information leakage when
resizing buffers containing secrets, and use where appropriate.
[Ben Laurie (CHATS)]
*) Avoid using fixed size buffers for configuration file location.
[Ben Laurie (CHATS)]
*) Avoid filename truncation for various CA files.
[Ben Laurie (CHATS)]
*) Use sizeof in preference to magic numbers.
[Ben Laurie (CHATS)]
*) Avoid filename truncation in cert requests.
[Ben Laurie (CHATS)]
*) Add assertions to check for (supposedly impossible) buffer
overflows.
[Ben Laurie (CHATS)]
*) Don't cache truncated DNS entries in the local cache (this could
potentially lead to a spoofing attack).
[Ben Laurie (CHATS)]
*) Fix various buffers to be large enough for hex/decimal
representations in a platform independent manner.
[Ben Laurie (CHATS)]
*) Add CRYPTO_realloc_clean() to avoid information leakage when
resizing buffers containing secrets, and use where appropriate.
[Ben Laurie (CHATS)]
*) Add BIO_indent() to avoid much slightly worrying code to do
indents.
[Ben Laurie (CHATS)]
*) Convert sprintf()/BIO_puts() to BIO_printf().
[Ben Laurie (CHATS)]
*) buffer_gets() could terminate with the buffer only half
full. Fixed.
[Ben Laurie (CHATS)]
*) Add assertions to prevent user-supplied crypto functions from
overflowing internal buffers by having large block sizes, etc.
[Ben Laurie (CHATS)]
*) New OPENSSL_assert() macro (similar to assert(), but enabled
unconditionally).
[Ben Laurie (CHATS)]
*) Eliminate unused copy of key in RC4.
[Ben Laurie (CHATS)]
*) Eliminate unused and incorrectly sized buffers for IV in pem.h.
[Ben Laurie (CHATS)]
*) Fix off-by-one error in EGD path.
[Ben Laurie (CHATS)]
*) If RANDFILE path is too long, ignore instead of truncating.
[Ben Laurie (CHATS)]
*) Eliminate unused and incorrectly sized X.509 structure
CBCParameter.
[Ben Laurie (CHATS)]
*) Eliminate unused and dangerous function knumber().
[Ben Laurie (CHATS)]
*) Eliminate unused and dangerous structure, KSSL_ERR.
[Ben Laurie (CHATS)]
*) Protect against overlong session ID context length in an encoded
session object. Since these are local, this does not appear to be
exploitable.
[Ben Laurie (CHATS)]
*) Change from security patch (see 0.9.6e below) that did not affect
the 0.9.6 release series:
Remote buffer overflow in SSL3 protocol - an attacker could
supply an oversized master key in Kerberos-enabled versions.
(CVE-2002-0657)
[Ben Laurie (CHATS)]
*) Change the SSL kerb5 codes to match RFC 2712.
[Richard Levitte]
*) Make -nameopt work fully for req and add -reqopt switch.
[Michael Bell <[email protected]>, Steve Henson]
*) The "block size" for block ciphers in CFB and OFB mode should be 1.
[Steve Henson, reported by Yngve Nysaeter Pettersen <[email protected]>]
*) Make sure tests can be performed even if the corresponding algorithms
have been removed entirely. This was also the last step to make
OpenSSL compilable with DJGPP under all reasonable conditions.
[Richard Levitte, Doug Kaufman <[email protected]>]
*) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
to allow version independent disabling of normally unselected ciphers,
which may be activated as a side-effect of selecting a single cipher.
(E.g., cipher list string "RSA" enables ciphersuites that are left
out of "ALL" because they do not provide symmetric encryption.
"RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
[Lutz Jaenicke, Bodo Moeller]
*) Add appropriate support for separate platform-dependent build
directories. The recommended way to make a platform-dependent
build directory is the following (tested on Linux), maybe with
some local tweaks:
# Place yourself outside of the OpenSSL source tree. In
# this example, the environment variable OPENSSL_SOURCE
# is assumed to contain the absolute OpenSSL source directory.
mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
cd objtree/"`uname -s`-`uname -r`-`uname -m`"
(cd $OPENSSL_SOURCE; find . -type f) | while read F; do
mkdir -p `dirname $F`
ln -s $OPENSSL_SOURCE/$F $F
done
To be absolutely sure not to disturb the source tree, a "make clean"
is a good thing. If it isn't successfull, don't worry about it,
it probably means the source directory is very clean.
[Richard Levitte]
*) Make sure any ENGINE control commands make local copies of string
pointers passed to them whenever necessary. Otherwise it is possible
the caller may have overwritten (or deallocated) the original string
data when a later ENGINE operation tries to use the stored values.
[G�tz Babin-Ebell <[email protected]>]
*) Improve diagnostics in file reading and command-line digests.
[Ben Laurie aided and abetted by Solar Designer <[email protected]>]
*) Add AES modes CFB and OFB to the object database. Correct an
error in AES-CFB decryption.
[Richard Levitte]
*) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
allows existing EVP_CIPHER_CTX structures to be reused after
calling EVP_*Final(). This behaviour is used by encryption
BIOs and some applications. This has the side effect that
applications must explicitly clean up cipher contexts with
EVP_CIPHER_CTX_cleanup() or they will leak memory.
[Steve Henson]
*) Check the values of dna and dnb in bn_mul_recursive before calling
bn_mul_comba (a non zero value means the a or b arrays do not contain
n2 elements) and fallback to bn_mul_normal if either is not zero.
[Steve Henson]
*) Fix escaping of non-ASCII characters when using the -subj option
of the "openssl req" command line tool. (Robert Joop <[email protected]>)
[Lutz Jaenicke]
*) Make object definitions compliant to LDAP (RFC2256): SN is the short
form for "surname", serialNumber has no short form.
Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
therefore remove "mail" short name for "internet 7".
The OID for unique identifiers in X509 certificates is
x500UniqueIdentifier, not uniqueIdentifier.
Some more OID additions. (Michael Bell <[email protected]>)
[Lutz Jaenicke]
*) Add an "init" command to the ENGINE config module and auto initialize
ENGINEs. Without any "init" command the ENGINE will be initialized
after all ctrl commands have been executed on it. If init=1 the
ENGINE is initailized at that point (ctrls before that point are run
on the uninitialized ENGINE and after on the initialized one). If
init=0 then the ENGINE will not be iniatialized at all.
[Steve Henson]
*) Fix the 'app_verify_callback' interface so that the user-defined
argument is actually passed to the callback: In the
SSL_CTX_set_cert_verify_callback() prototype, the callback
declaration has been changed from
int (*cb)()
into
int (*cb)(X509_STORE_CTX *,void *);
in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
i=s->ctx->app_verify_callback(&ctx)
has been changed into
i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
To update applications using SSL_CTX_set_cert_verify_callback(),
a dummy argument can be added to their callback functions.
[D. K. Smetters <[email protected]>]
*) Added the '4758cca' ENGINE to support IBM 4758 cards.
[Maurice Gittens <[email protected]>, touchups by Geoff Thorpe]
*) Add and OPENSSL_LOAD_CONF define which will cause
OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
This allows older applications to transparently support certain
OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
Two new functions OPENSSL_add_all_algorithms_noconf() which will never
load the config file and OPENSSL_add_all_algorithms_conf() which will
always load it have also been added.
[Steve Henson]
*) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
Adjust NIDs and EVP layer.
[Stephen Sprunk <[email protected]> and Richard Levitte]
*) Config modules support in openssl utility.
Most commands now load modules from the config file,
though in a few (such as version) this isn't done
because it couldn't be used for anything.
In the case of ca and req the config file used is
the same as the utility itself: that is the -config
command line option can be used to specify an
alternative file.
[Steve Henson]
*) Move default behaviour from OPENSSL_config(). If appname is NULL
use "openssl_conf" if filename is NULL use default openssl config file.
[Steve Henson]
*) Add an argument to OPENSSL_config() to allow the use of an alternative
config section name. Add a new flag to tolerate a missing config file
and move code to CONF_modules_load_file().
[Steve Henson]
*) Support for crypto accelerator cards from Accelerated Encryption
Processing, www.aep.ie. (Use engine 'aep')
The support was copied from 0.9.6c [engine] and adapted/corrected
to work with the new engine framework.
[AEP Inc. and Richard Levitte]
*) Support for SureWare crypto accelerator cards from Baltimore
Technologies. (Use engine 'sureware')
The support was copied from 0.9.6c [engine] and adapted
to work with the new engine framework.
[Richard Levitte]
*) Have the CHIL engine fork-safe (as defined by nCipher) and actually
make the newer ENGINE framework commands for the CHIL engine work.
[Toomas Kiisk <[email protected]> and Richard Levitte]
*) Make it possible to produce shared libraries on ReliantUNIX.
[Robert Dahlem <[email protected]> via Richard Levitte]
*) Add the configuration target debug-linux-ppro.
Make 'openssl rsa' use the general key loading routines
implemented in apps.c, and make those routines able to
handle the key format FORMAT_NETSCAPE and the variant
FORMAT_IISSGC.
[Toomas Kiisk <[email protected]> via Richard Levitte]
*) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
[Toomas Kiisk <[email protected]> via Richard Levitte]
*) Add -keyform to rsautl, and document -engine.
[Richard Levitte, inspired by Toomas Kiisk <[email protected]>]
*) Change BIO_new_file (crypto/bio/bss_file.c) to use new
BIO_R_NO_SUCH_FILE error code rather than the generic
ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
[Ben Laurie]
*) Add new functions
ERR_peek_last_error
ERR_peek_last_error_line
ERR_peek_last_error_line_data.
These are similar to
ERR_peek_error
ERR_peek_error_line
ERR_peek_error_line_data,
but report on the latest error recorded rather than the first one
still in the error queue.
[Ben Laurie, Bodo Moeller]
*) default_algorithms option in ENGINE config module. This allows things
like:
default_algorithms = ALL
default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
[Steve Henson]
*) Prelminary ENGINE config module.
[Steve Henson]
*) New experimental application configuration code.
[Steve Henson]
*) Change the AES code to follow the same name structure as all other
symmetric ciphers, and behave the same way. Move everything to
the directory crypto/aes, thereby obsoleting crypto/rijndael.
[Stephen Sprunk <[email protected]> and Richard Levitte]
*) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
[Ben Laurie and Theo de Raadt]
*) Add option to output public keys in req command.
[Massimiliano Pala [email protected]]
*) Use wNAFs in EC_POINTs_mul() for improved efficiency
(up to about 10% better than before for P-192 and P-224).
[Bodo Moeller]
*) New functions/macros
SSL_CTX_set_msg_callback(ctx, cb)
SSL_CTX_set_msg_callback_arg(ctx, arg)
SSL_set_msg_callback(ssl, cb)
SSL_set_msg_callback_arg(ssl, arg)
to request calling a callback function
void cb(int write_p, int version, int content_type,
const void *buf, size_t len, SSL *ssl, void *arg)
whenever a protocol message has been completely received
(write_p == 0) or sent (write_p == 1). Here 'version' is the
protocol version according to which the SSL library interprets
the current protocol message (SSL2_VERSION, SSL3_VERSION, or
TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
the content type as defined in the SSL 3.0/TLS 1.0 protocol
specification (change_cipher_spec(20), alert(21), handshake(22)).
'buf' and 'len' point to the actual message, 'ssl' to the
SSL object, and 'arg' is the application-defined value set by
SSL[_CTX]_set_msg_callback_arg().
'openssl s_client' and 'openssl s_server' have new '-msg' options
to enable a callback that displays all protocol messages.
[Bodo Moeller]
*) Change the shared library support so shared libraries are built as
soon as the corresponding static library is finished, and thereby get
openssl and the test programs linked against the shared library.
This still only happens when the keyword "shard" has been given to
the configuration scripts.
NOTE: shared library support is still an experimental thing, and
backward binary compatibility is still not guaranteed.
["Maciej W. Rozycki" <[email protected]> and Richard Levitte]
*) Add support for Subject Information Access extension.
[Peter Sylvester <[email protected]>]
*) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
additional bytes when new memory had to be allocated, not just
when reusing an existing buffer.
[Bodo Moeller]
*) New command line and configuration option 'utf8' for the req command.
This allows field values to be specified as UTF8 strings.
[Steve Henson]
*) Add -multi and -mr options to "openssl speed" - giving multiple parallel
runs for the former and machine-readable output for the latter.
[Ben Laurie]
*) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
of the e-mail address in the DN (i.e., it will go into a certificate
extension only). The new configuration file option 'email_in_dn = no'
has the same effect.
[Massimiliano Pala [email protected]]
*) Change all functions with names starting with des_ to be starting
with DES_ instead. Add wrappers that are compatible with libdes,
but are named _ossl_old_des_*. Finally, add macros that map the
des_* symbols to the corresponding _ossl_old_des_* if libdes
compatibility is desired. If OpenSSL 0.9.6c compatibility is
desired, the des_* symbols will be mapped to DES_*, with one
exception.
Since we provide two compatibility mappings, the user needs to
define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
compatibility is desired. The default (i.e., when that macro
isn't defined) is OpenSSL 0.9.6c compatibility.
There are also macros that enable and disable the support of old
des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
are defined, the default will apply: to support the old des routines.
In either case, one must include openssl/des.h to get the correct
definitions. Do not try to just include openssl/des_old.h, that
won't work.
NOTE: This is a major break of an old API into a new one. Software
authors are encouraged to switch to the DES_ style functions. Some
time in the future, des_old.h and the libdes compatibility functions
will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
default), and then completely removed.
[Richard Levitte]
*) Test for certificates which contain unsupported critical extensions.
If such a certificate is found during a verify operation it is
rejected by default: this behaviour can be overridden by either
handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
X509_supported_extension() has also been added which returns 1 if a
particular extension is supported.
[Steve Henson]
*) Modify the behaviour of EVP cipher functions in similar way to digests
to retain compatibility with existing code.
[Steve Henson]
*) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
compatibility with existing code. In particular the 'ctx' parameter does
not have to be to be initialized before the call to EVP_DigestInit() and
it is tidied up after a call to EVP_DigestFinal(). New function
EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
EVP_MD_CTX_copy() changed to not require the destination to be
initialized valid and new function EVP_MD_CTX_copy_ex() added which
requires the destination to be valid.
Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
[Steve Henson]
*) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
so that complete 'Handshake' protocol structures are kept in memory
instead of overwriting 'msg_type' and 'length' with 'body' data.
[Bodo Moeller]
*) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
[Massimo Santin via Richard Levitte]
*) Major restructuring to the underlying ENGINE code. This includes
reduction of linker bloat, separation of pure "ENGINE" manipulation
(initialisation, etc) from functionality dealing with implementations
of specific crypto iterfaces. This change also introduces integrated
support for symmetric ciphers and digest implementations - so ENGINEs
can now accelerate these by providing EVP_CIPHER and EVP_MD
implementations of their own. This is detailed in crypto/engine/README
as it couldn't be adequately described here. However, there are a few
API changes worth noting - some RSA, DSA, DH, and RAND functions that
were changed in the original introduction of ENGINE code have now
reverted back - the hooking from this code to ENGINE is now a good
deal more passive and at run-time, operations deal directly with
RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
dereferencing through an ENGINE pointer any more. Also, the ENGINE
functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
they were not being used by the framework as there is no concept of a
BIGNUM_METHOD and they could not be generalised to the new
'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
ENGINE_cpy() has been removed as it cannot be consistently defined in
the new code.
[Geoff Thorpe]
*) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
[Steve Henson]
*) Change mkdef.pl to sort symbols that get the same entry number,
and make sure the automatically generated functions ERR_load_*
become part of libeay.num as well.
[Richard Levitte]
*) New function SSL_renegotiate_pending(). This returns true once
renegotiation has been requested (either SSL_renegotiate() call
or HelloRequest/ClientHello receveived from the peer) and becomes
false once a handshake has been completed.
(For servers, SSL_renegotiate() followed by SSL_do_handshake()
sends a HelloRequest, but does not ensure that a handshake takes
place. SSL_renegotiate_pending() is useful for checking if the
client has followed the request.)
[Bodo Moeller]
*) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
By default, clients may request session resumption even during
renegotiation (if session ID contexts permit); with this option,
session resumption is possible only in the first handshake.
SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
more bits available for options that should not be part of
SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
[Bodo Moeller]
*) Add some demos for certificate and certificate request creation.
[Steve Henson]
*) Make maximum certificate chain size accepted from the peer application
settable (SSL*_get/set_max_cert_list()), as proposed by
"Douglas E. Engert" <[email protected]>.
[Lutz Jaenicke]
*) Add support for shared libraries for Unixware-7
(Boyd Lynn Gerber <[email protected]>).
[Lutz Jaenicke]
*) Add a "destroy" handler to ENGINEs that allows structural cleanup to
be done prior to destruction. Use this to unload error strings from
ENGINEs that load their own error strings. NB: This adds two new API
functions to "get" and "set" this destroy handler in an ENGINE.
[Geoff Thorpe]
*) Alter all existing ENGINE implementations (except "openssl" and
"openbsd") to dynamically instantiate their own error strings. This
makes them more flexible to be built both as statically-linked ENGINEs
and self-contained shared-libraries loadable via the "dynamic" ENGINE.
Also, add stub code to each that makes building them as self-contained
shared-libraries easier (see README.ENGINE).
[Geoff Thorpe]
*) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
implementations into applications that are completely implemented in
self-contained shared-libraries. The "dynamic" ENGINE exposes control
commands that can be used to configure what shared-library to load and
to control aspects of the way it is handled. Also, made an update to
the README.ENGINE file that brings its information up-to-date and
provides some information and instructions on the "dynamic" ENGINE
(ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
[Geoff Thorpe]
*) Make it possible to unload ranges of ERR strings with a new
"ERR_unload_strings" function.
[Geoff Thorpe]
*) Add a copy() function to EVP_MD.
[Ben Laurie]
*) Make EVP_MD routines take a context pointer instead of just the
md_data void pointer.
[Ben Laurie]
*) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
that the digest can only process a single chunk of data
(typically because it is provided by a piece of
hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
is only going to provide a single chunk of data, and hence the
framework needn't accumulate the data for oneshot drivers.
[Ben Laurie]
*) As with "ERR", make it possible to replace the underlying "ex_data"
functions. This change also alters the storage and management of global
ex_data state - it's now all inside ex_data.c and all "class" code (eg.
RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
index counters. The API functions that use this state have been changed
to take a "class_index" rather than pointers to the class's local STACK
and counter, and there is now an API function to dynamically create new
classes. This centralisation allows us to (a) plug a lot of the
thread-safety problems that existed, and (b) makes it possible to clean
up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
such data would previously have always leaked in application code and
workarounds were in place to make the memory debugging turn a blind eye
to it. Application code that doesn't use this new function will still
leak as before, but their memory debugging output will announce it now
rather than letting it slide.
Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
has a return value to indicate success or failure.
[Geoff Thorpe]
*) Make it possible to replace the underlying "ERR" functions such that the
global state (2 LHASH tables and 2 locks) is only used by the "default"
implementation. This change also adds two functions to "get" and "set"
the implementation prior to it being automatically set the first time
any other ERR function takes place. Ie. an application can call "get",
pass the return value to a module it has just loaded, and that module
can call its own "set" function using that value. This means the
module's "ERR" operations will use (and modify) the error state in the
application and not in its own statically linked copy of OpenSSL code.
[Geoff Thorpe]
*) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
reference counts. This performs normal REF_PRINT/REF_CHECK macros on
the operation, and provides a more encapsulated way for external code
(crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
to use these functions rather than manually incrementing the counts.
Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
[Geoff Thorpe]
*) Add EVP test program.
[Ben Laurie]
*) Add symmetric cipher support to ENGINE. Expect the API to change!
[Ben Laurie]
*) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
These allow a CRL to be built without having to access X509_CRL fields
directly. Modify 'ca' application to use new functions.
[Steve Henson]
*) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
bug workarounds. Rollback attack detection is a security feature.
The problem will only arise on OpenSSL servers when TLSv1 is not
available (sslv3_server_method() or SSL_OP_NO_TLSv1).
Software authors not wanting to support TLSv1 will have special reasons
for their choice and can explicitly enable this option.
[Bodo Moeller, Lutz Jaenicke]
*) Rationalise EVP so it can be extended: don't include a union of
cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
(similar to those existing for EVP_CIPHER_CTX).
Usage example:
EVP_MD_CTX md;
EVP_MD_CTX_init(&md); /* new function call */
EVP_DigestInit(&md, EVP_sha1());
EVP_DigestUpdate(&md, in, len);
EVP_DigestFinal(&md, out, NULL);
EVP_MD_CTX_cleanup(&md); /* new function call */
[Ben Laurie]
*) Make DES key schedule conform to the usual scheme, as well as
correcting its structure. This means that calls to DES functions
now have to pass a pointer to a des_key_schedule instead of a
plain des_key_schedule (which was actually always a pointer
anyway): E.g.,
des_key_schedule ks;
des_set_key_checked(..., &ks);
des_ncbc_encrypt(..., &ks, ...);
(Note that a later change renames 'des_...' into 'DES_...'.)
[Ben Laurie]
*) Initial reduction of linker bloat: the use of some functions, such as
PEM causes large amounts of unused functions to be linked in due to
poor organisation. For example pem_all.c contains every PEM function
which has a knock on effect of linking in large amounts of (unused)
ASN1 code. Grouping together similar functions and splitting unrelated
functions prevents this.
[Steve Henson]
*) Cleanup of EVP macros.
[Ben Laurie]
*) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
correct _ecb suffix.
[Ben Laurie]
*) Add initial OCSP responder support to ocsp application. The
revocation information is handled using the text based index
use by the ca application. The responder can either handle
requests generated internally, supplied in files (for example
via a CGI script) or using an internal minimal server.
[Steve Henson]
*) Add configuration choices to get zlib compression for TLS.
[Richard Levitte]
*) Changes to Kerberos SSL for RFC 2712 compliance:
1. Implemented real KerberosWrapper, instead of just using
KRB5 AP_REQ message. [Thanks to Simon Wilkinson <[email protected]>]
2. Implemented optional authenticator field of KerberosWrapper.
Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
and authenticator structs; see crypto/krb5/.
Generalized Kerberos calls to support multiple Kerberos libraries.
[Vern Staats <[email protected]>,
Jeffrey Altman <[email protected]>
via Richard Levitte]
*) Cause 'openssl speed' to use fully hard-coded DSA keys as it
already does with RSA. testdsa.h now has 'priv_key/pub_key'
values for each of the key sizes rather than having just
parameters (and 'speed' generating keys each time).
[Geoff Thorpe]
*) Speed up EVP routines.
Before:
encrypt
type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
decrypt
des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
After:
encrypt
des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
decrypt
des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
[Ben Laurie]
*) Added the OS2-EMX target.
["Brian Havard" <[email protected]> and Richard Levitte]
*) Rewrite apps to use NCONF routines instead of the old CONF. New functions
to support NCONF routines in extension code. New function CONF_set_nconf()
to allow functions which take an NCONF to also handle the old LHASH
structure: this means that the old CONF compatible routines can be
retained (in particular wrt extensions) without having to duplicate the
code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
[Steve Henson]
*) Enhance the general user interface with mechanisms for inner control
and with possibilities to have yes/no kind of prompts.
[Richard Levitte]
*) Change all calls to low level digest routines in the library and
applications to use EVP. Add missing calls to HMAC_cleanup() and
don't assume HMAC_CTX can be copied using memcpy().
[Verdon Walker <[email protected]>, Steve Henson]
*) Add the possibility to control engines through control names but with
arbitrary arguments instead of just a string.
Change the key loaders to take a UI_METHOD instead of a callback
function pointer. NOTE: this breaks binary compatibility with earlier
versions of OpenSSL [engine].
Adapt the nCipher code for these new conditions and add a card insertion
callback.
[Richard Levitte]
*) Enhance the general user interface with mechanisms to better support
dialog box interfaces, application-defined prompts, the possibility
to use defaults (for example default passwords from somewhere else)
and interrupts/cancellations.
[Richard Levitte]
*) Tidy up PKCS#12 attribute handling. Add support for the CSP name
attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
[Steve Henson]
*) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
tidy up some unnecessarily weird code in 'sk_new()').
[Geoff, reported by Diego Tartara <[email protected]>]
*) Change the key loading routines for ENGINEs to use the same kind
callback (pem_password_cb) as all other routines that need this
kind of callback.
[Richard Levitte]
*) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
256 bit (=32 byte) keys. Of course seeding with more entropy bytes
than this minimum value is recommended.
[Lutz Jaenicke]
*) New random seeder for OpenVMS, using the system process statistics
that are easily reachable.
[Richard Levitte]
*) Windows apparently can't transparently handle global
variables defined in DLLs. Initialisations such as:
const ASN1_ITEM *it = &ASN1_INTEGER_it;
wont compile. This is used by the any applications that need to
declare their own ASN1 modules. This was fixed by adding the option
EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
needed for static libraries under Win32.
[Steve Henson]
*) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
setting of purpose and trust fields. New X509_STORE trust and
purpose functions and tidy up setting in other SSL functions.
[Steve Henson]
*) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
structure. These are inherited by X509_STORE_CTX when it is
initialised. This allows various defaults to be set in the
X509_STORE structure (such as flags for CRL checking and custom
purpose or trust settings) for functions which only use X509_STORE_CTX
internally such as S/MIME.
Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
trust settings if they are not set in X509_STORE. This allows X509_STORE
purposes and trust (in S/MIME for example) to override any set by default.
Add command line options for CRL checking to smime, s_client and s_server
applications.
[Steve Henson]
*) Initial CRL based revocation checking. If the CRL checking flag(s)
are set then the CRL is looked up in the X509_STORE structure and
its validity and signature checked, then if the certificate is found
in the CRL the verify fails with a revoked error.
Various new CRL related callbacks added to X509_STORE_CTX structure.
Command line options added to 'verify' application to support this.
This needs some additional work, such as being able to handle multiple
CRLs with different times, extension based lookup (rather than just
by subject name) and ultimately more complete V2 CRL extension
handling.
[Steve Henson]
*) Add a general user interface API (crypto/ui/). This is designed
to replace things like des_read_password and friends (backward
compatibility functions using this new API are provided).
The purpose is to remove prompting functions from the DES code
section as well as provide for prompting through dialog boxes in
a window system and the like.
[Richard Levitte]
*) Add "ex_data" support to ENGINE so implementations can add state at a
per-structure level rather than having to store it globally.
[Geoff]
*) Make it possible for ENGINE structures to be copied when retrieved by
ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
This causes the "original" ENGINE structure to act like a template,
analogous to the RSA vs. RSA_METHOD type of separation. Because of this
operational state can be localised to each ENGINE structure, despite the
fact they all share the same "methods". New ENGINE structures returned in
this case have no functional references and the return value is the single
structural reference. This matches the single structural reference returned
by ENGINE_by_id() normally, when it is incremented on the pre-existing
ENGINE structure.
[Geoff]
*) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
needs to match any other type at all we need to manually clear the
tag cache.
[Steve Henson]
*) Changes to the "openssl engine" utility to include;
- verbosity levels ('-v', '-vv', and '-vvv') that provide information
about an ENGINE's available control commands.
- executing control commands from command line arguments using the
'-pre' and '-post' switches. '-post' is only used if '-t' is
specified and the ENGINE is successfully initialised. The syntax for
the individual commands are colon-separated, for example;
openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
[Geoff]
*) New dynamic control command support for ENGINEs. ENGINEs can now
declare their own commands (numbers), names (strings), descriptions,
and input types for run-time discovery by calling applications. A
subset of these commands are implicitly classed as "executable"
depending on their input type, and only these can be invoked through
the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
can be based on user input, config files, etc). The distinction is
that "executable" commands cannot return anything other than a boolean
result and can only support numeric or string input, whereas some
discoverable commands may only be for direct use through
ENGINE_ctrl(), eg. supporting the exchange of binary data, function
pointers, or other custom uses. The "executable" commands are to
support parameterisations of ENGINE behaviour that can be
unambiguously defined by ENGINEs and used consistently across any
OpenSSL-based application. Commands have been added to all the
existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
control over shared-library paths without source code alterations.
[Geoff]
*) Changed all ENGINE implementations to dynamically allocate their
ENGINEs rather than declaring them statically. Apart from this being
necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
this also allows the implementations to compile without using the
internal engine_int.h header.
[Geoff]
*) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
'const' value. Any code that should be able to modify a RAND_METHOD
should already have non-const pointers to it (ie. they should only
modify their own ones).
[Geoff]
*) Made a variety of little tweaks to the ENGINE code.
- "atalla" and "ubsec" string definitions were moved from header files
to C code. "nuron" string definitions were placed in variables
rather than hard-coded - allowing parameterisation of these values
later on via ctrl() commands.
- Removed unused "#if 0"'d code.
- Fixed engine list iteration code so it uses ENGINE_free() to release
structural references.
- Constified the RAND_METHOD element of ENGINE structures.
- Constified various get/set functions as appropriate and added
missing functions (including a catch-all ENGINE_cpy that duplicates
all ENGINE values onto a new ENGINE except reference counts/state).
- Removed NULL parameter checks in get/set functions. Setting a method
or function to NULL is a way of cancelling out a previously set
value. Passing a NULL ENGINE parameter is just plain stupid anyway
and doesn't justify the extra error symbols and code.
- Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
flags from engine_int.h to engine.h.
- Changed prototypes for ENGINE handler functions (init(), finish(),
ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
[Geoff]
*) Implement binary inversion algorithm for BN_mod_inverse in addition
to the algorithm using long division. The binary algorithm can be
used only if the modulus is odd. On 32-bit systems, it is faster
only for relatively small moduli (roughly 20-30% for 128-bit moduli,
roughly 5-15% for 256-bit moduli), so we use it only for moduli
up to 450 bits. In 64-bit environments, the binary algorithm
appears to be advantageous for much longer moduli; here we use it
for moduli up to 2048 bits.
[Bodo Moeller]
*) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
could not support the combine flag in choice fields.
[Steve Henson]
*) Add a 'copy_extensions' option to the 'ca' utility. This copies
extensions from a certificate request to the certificate.
[Steve Henson]
*) Allow multiple 'certopt' and 'nameopt' options to be separated
by commas. Add 'namopt' and 'certopt' options to the 'ca' config
file: this allows the display of the certificate about to be
signed to be customised, to allow certain fields to be included
or excluded and extension details. The old system didn't display
multicharacter strings properly, omitted fields not in the policy
and couldn't display additional details such as extensions.
[Steve Henson]
*) Function EC_POINTs_mul for multiple scalar multiplication
of an arbitrary number of elliptic curve points
\sum scalars[i]*points[i],
optionally including the generator defined for the EC_GROUP:
scalar*generator + \sum scalars[i]*points[i].
EC_POINT_mul is a simple wrapper function for the typical case
that the point list has just one item (besides the optional
generator).
[Bodo Moeller]
*) First EC_METHODs for curves over GF(p):
EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
operations and provides various method functions that can also
operate with faster implementations of modular arithmetic.
EC_GFp_mont_method() reuses most functions that are part of
EC_GFp_simple_method, but uses Montgomery arithmetic.
[Bodo Moeller; point addition and point doubling
implementation directly derived from source code provided by
Lenka Fibikova <[email protected]>]
*) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
crypto/ec/ec_lib.c):
Curves are EC_GROUP objects (with an optional group generator)
based on EC_METHODs that are built into the library.
Points are EC_POINT objects based on EC_GROUP objects.
Most of the framework would be able to handle curves over arbitrary
finite fields, but as there are no obvious types for fields other
than GF(p), some functions are limited to that for now.
[Bodo Moeller]
*) Add the -HTTP option to s_server. It is similar to -WWW, but requires
that the file contains a complete HTTP response.
[Richard Levitte]
*) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
change the def and num file printf format specifier from "%-40sXXX"
to "%-39s XXX". The latter will always guarantee a space after the
field while the former will cause them to run together if the field
is 40 of more characters long.
[Steve Henson]
*) Constify the cipher and digest 'method' functions and structures
and modify related functions to take constant EVP_MD and EVP_CIPHER
pointers.
[Steve Henson]
*) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
[Bodo Moeller]
*) Modify EVP_Digest*() routines so they now return values. Although the
internal software routines can never fail additional hardware versions
might.
[Steve Henson]
*) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
(= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
ASN1 error codes
ERR_R_NESTED_ASN1_ERROR
...
ERR_R_MISSING_ASN1_EOS
were 4 .. 9, conflicting with
ERR_LIB_RSA (= ERR_R_RSA_LIB)
...
ERR_LIB_PEM (= ERR_R_PEM_LIB).
They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
Add new error code 'ERR_R_INTERNAL_ERROR'.
[Bodo Moeller]
*) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
suffices.
[Bodo Moeller]
*) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
sets the subject name for a new request or supersedes the
subject name in a given request. Formats that can be parsed are
'CN=Some Name, OU=myOU, C=IT'
and
'CN=Some Name/OU=myOU/C=IT'.
Add options '-batch' and '-verbose' to 'openssl req'.
[Massimiliano Pala <[email protected]>]
*) Introduce the possibility to access global variables through
functions on platform were that's the best way to handle exporting
global variables in shared libraries. To enable this functionality,
one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
"OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
is normally done by Configure or something similar).
To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
in the source file (foo.c) like this:
OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
OPENSSL_IMPLEMENT_GLOBAL(double,bar);
To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
OPENSSL_DECLARE_GLOBAL(int,foo);
#define foo OPENSSL_GLOBAL_REF(foo)
OPENSSL_DECLARE_GLOBAL(double,bar);
#define bar OPENSSL_GLOBAL_REF(bar)
The #defines are very important, and therefore so is including the
header file everywhere where the defined globals are used.
The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
of ASN.1 items, but that structure is a bit different.
The largest change is in util/mkdef.pl which has been enhanced with
better and easier to understand logic to choose which symbols should
go into the Windows .def files as well as a number of fixes and code
cleanup (among others, algorithm keywords are now sorted
lexicographically to avoid constant rewrites).
[Richard Levitte]
*) In BN_div() keep a copy of the sign of 'num' before writing the
result to 'rm' because if rm==num the value will be overwritten
and produce the wrong result if 'num' is negative: this caused
problems with BN_mod() and BN_nnmod().
[Steve Henson]
*) Function OCSP_request_verify(). This checks the signature on an
OCSP request and verifies the signer certificate. The signer
certificate is just checked for a generic purpose and OCSP request
trust settings.
[Steve Henson]
*) Add OCSP_check_validity() function to check the validity of OCSP
responses. OCSP responses are prepared in real time and may only
be a few seconds old. Simply checking that the current time lies
between thisUpdate and nextUpdate max reject otherwise valid responses
caused by either OCSP responder or client clock inaccuracy. Instead
we allow thisUpdate and nextUpdate to fall within a certain period of
the current time. The age of the response can also optionally be
checked. Two new options -validity_period and -status_age added to
ocsp utility.
[Steve Henson]
*) If signature or public key algorithm is unrecognized print out its
OID rather that just UNKNOWN.
[Steve Henson]
*) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
ID to be generated from the issuer certificate alone which can then be
passed to OCSP_id_issuer_cmp().
[Steve Henson]
*) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
ASN1 modules to export functions returning ASN1_ITEM pointers
instead of the ASN1_ITEM structures themselves. This adds several
new macros which allow the underlying ASN1 function/structure to
be accessed transparently. As a result code should not use ASN1_ITEM
references directly (such as &X509_it) but instead use the relevant
macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
use of the new ASN1 code on platforms where exporting structures
is problematical (for example in shared libraries) but exporting
functions returning pointers to structures is not.
[Steve Henson]
*) Add support for overriding the generation of SSL/TLS session IDs.
These callbacks can be registered either in an SSL_CTX or per SSL.
The purpose of this is to allow applications to control, if they wish,
the arbitrary values chosen for use as session IDs, particularly as it
can be useful for session caching in multiple-server environments. A
command-line switch for testing this (and any client code that wishes
to use such a feature) has been added to "s_server".
[Geoff Thorpe, Lutz Jaenicke]
*) Modify mkdef.pl to recognise and parse preprocessor conditionals
of the form '#if defined(...) || defined(...) || ...' and
'#if !defined(...) && !defined(...) && ...'. This also avoids
the growing number of special cases it was previously handling.
[Richard Levitte]
*) Make all configuration macros available for application by making
sure they are available in opensslconf.h, by giving them names starting
with "OPENSSL_" to avoid conflicts with other packages and by making
sure e_os2.h will cover all platform-specific cases together with
opensslconf.h.
Additionally, it is now possible to define configuration/platform-
specific names (called "system identities"). In the C code, these
are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
macro with the name beginning with "OPENSSL_SYS_", which is determined
from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
what is available.
[Richard Levitte]
*) New option -set_serial to 'req' and 'x509' this allows the serial
number to use to be specified on the command line. Previously self
signed certificates were hard coded with serial number 0 and the
CA options of 'x509' had to use a serial number in a file which was
auto incremented.
[Steve Henson]
*) New options to 'ca' utility to support V2 CRL entry extensions.
Currently CRL reason, invalidity date and hold instruction are
supported. Add new CRL extensions to V3 code and some new objects.
[Steve Henson]
*) New function EVP_CIPHER_CTX_set_padding() this is used to
disable standard block padding (aka PKCS#5 padding) in the EVP
API, which was previously mandatory. This means that the data is
not padded in any way and so the total length much be a multiple
of the block size, otherwise an error occurs.
[Steve Henson]
*) Initial (incomplete) OCSP SSL support.
[Steve Henson]
*) New function OCSP_parse_url(). This splits up a URL into its host,
port and path components: primarily to parse OCSP URLs. New -url
option to ocsp utility.
[Steve Henson]
*) New nonce behavior. The return value of OCSP_check_nonce() now
reflects the various checks performed. Applications can decide
whether to tolerate certain situations such as an absent nonce
in a response when one was present in a request: the ocsp application
just prints out a warning. New function OCSP_add1_basic_nonce()
this is to allow responders to include a nonce in a response even if
the request is nonce-less.
[Steve Henson]
*) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
skipped when using openssl x509 multiple times on a single input file,
e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
[Bodo Moeller]
*) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
set string type: to handle setting ASN1_TIME structures. Fix ca
utility to correctly initialize revocation date of CRLs.
[Steve Henson]
*) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
the clients preferred ciphersuites and rather use its own preferences.
Should help to work around M$ SGC (Server Gated Cryptography) bug in
Internet Explorer by ensuring unchanged hash method during stepup.
(Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
[Lutz Jaenicke]
*) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
to aes and add a new 'exist' option to print out symbols that don't
appear to exist.
[Steve Henson]
*) Additional options to ocsp utility to allow flags to be set and
additional certificates supplied.
[Steve Henson]
*) Add the option -VAfile to 'openssl ocsp', so the user can give the
OCSP client a number of certificate to only verify the response
signature against.
[Richard Levitte]
*) Update Rijndael code to version 3.0 and change EVP AES ciphers to
handle the new API. Currently only ECB, CBC modes supported. Add new
AES OIDs.
Add TLS AES ciphersuites as described in RFC3268, "Advanced
Encryption Standard (AES) Ciphersuites for Transport Layer
Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
not enabled by default and were not part of the "ALL" ciphersuite
alias because they were not yet official; they could be
explicitly requested by specifying the "AESdraft" ciphersuite
group alias. In the final release of OpenSSL 0.9.7, the group
alias is called "AES" and is part of "ALL".)
[Ben Laurie, Steve Henson, Bodo Moeller]
*) New function OCSP_copy_nonce() to copy nonce value (if present) from
request to response.
[Steve Henson]
*) Functions for OCSP responders. OCSP_request_onereq_count(),
OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
extract information from a certificate request. OCSP_response_create()
creates a response and optionally adds a basic response structure.
OCSP_basic_add1_status() adds a complete single response to a basic
response and returns the OCSP_SINGLERESP structure just added (to allow
extensions to be included for example). OCSP_basic_add1_cert() adds a
certificate to a basic response and OCSP_basic_sign() signs a basic
response with various flags. New helper functions ASN1_TIME_check()
(checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
(converts ASN1_TIME to GeneralizedTime).
[Steve Henson]
*) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
structure from a certificate. X509_pubkey_digest() digests the public_key
contents: this is used in various key identifiers.
[Steve Henson]
*) Make sk_sort() tolerate a NULL argument.
[Steve Henson reported by Massimiliano Pala <[email protected]>]
*) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
passed by the function are trusted implicitly. If any of them signed the
response then it is assumed to be valid and is not verified.
[Steve Henson]
*) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
to data. This was previously part of the PKCS7 ASN1 code. This
was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
[Steve Henson, reported by Kenneth R. Robinette
<[email protected]>]
*) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
routines: without these tracing memory leaks is very painful.
Fix leaks in PKCS12 and PKCS7 routines.
[Steve Henson]
*) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
effectively meant GeneralizedTime would never be used. Now it
is initialised to -1 but X509_time_adj() now has to check the value
and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
[Steve Henson, reported by Kenneth R. Robinette
<[email protected]>]
*) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
result in a zero length in the ASN1_INTEGER structure which was
not consistent with the structure when d2i_ASN1_INTEGER() was used
and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
where it did not print out a minus for negative ASN1_INTEGER.
[Steve Henson]
*) Add summary printout to ocsp utility. The various functions which
convert status values to strings have been renamed to:
OCSP_response_status_str(), OCSP_cert_status_str() and
OCSP_crl_reason_str() and are no longer static. New options
to verify nonce values and to disable verification. OCSP response
printout format cleaned up.
[Steve Henson]
*) Add additional OCSP certificate checks. These are those specified
in RFC2560. This consists of two separate checks: the CA of the
certificate being checked must either be the OCSP signer certificate
or the issuer of the OCSP signer certificate. In the latter case the
OCSP signer certificate must contain the OCSP signing extended key
usage. This check is performed by attempting to match the OCSP
signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
in the OCSP_CERTID structures of the response.
[Steve Henson]
*) Initial OCSP certificate verification added to OCSP_basic_verify()
and related routines. This uses the standard OpenSSL certificate
verify routines to perform initial checks (just CA validity) and
to obtain the certificate chain. Then additional checks will be
performed on the chain. Currently the root CA is checked to see
if it is explicitly trusted for OCSP signing. This is used to set
a root CA as a global signing root: that is any certificate that
chains to that CA is an acceptable OCSP signing certificate.
[Steve Henson]
*) New '-extfile ...' option to 'openssl ca' for reading X.509v3
extensions from a separate configuration file.
As when reading extensions from the main configuration file,
the '-extensions ...' option may be used for specifying the
section to use.
[Massimiliano Pala <[email protected]>]
*) New OCSP utility. Allows OCSP requests to be generated or
read. The request can be sent to a responder and the output
parsed, outputed or printed in text form. Not complete yet:
still needs to check the OCSP response validity.
[Steve Henson]
*) New subcommands for 'openssl ca':
'openssl ca -status <serial>' prints the status of the cert with
the given serial number (according to the index file).
'openssl ca -updatedb' updates the expiry status of certificates
in the index file.
[Massimiliano Pala <[email protected]>]
*) New '-newreq-nodes' command option to CA.pl. This is like
'-newreq', but calls 'openssl req' with the '-nodes' option
so that the resulting key is not encrypted.
[Damien Miller <[email protected]>]
*) New configuration for the GNU Hurd.
[Jonathan Bartlett <[email protected]> via Richard Levitte]
*) Initial code to implement OCSP basic response verify. This
is currently incomplete. Currently just finds the signer's
certificate and verifies the signature on the response.
[Steve Henson]
*) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
value of OPENSSLDIR. This is available via the new '-d' option
to 'openssl version', and is also included in 'openssl version -a'.
[Bodo Moeller]
*) Allowing defining memory allocation callbacks that will be given
file name and line number information in additional arguments
(a const char* and an int). The basic functionality remains, as
well as the original possibility to just replace malloc(),
realloc() and free() by functions that do not know about these
additional arguments. To register and find out the current
settings for extended allocation functions, the following
functions are provided:
CRYPTO_set_mem_ex_functions
CRYPTO_set_locked_mem_ex_functions
CRYPTO_get_mem_ex_functions
CRYPTO_get_locked_mem_ex_functions
These work the same way as CRYPTO_set_mem_functions and friends.
CRYPTO_get_[locked_]mem_functions now writes 0 where such an
extended allocation function is enabled.
Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
a conventional allocation function is enabled.
[Richard Levitte, Bodo Moeller]
*) Finish off removing the remaining LHASH function pointer casts.
There should no longer be any prototype-casting required when using
the LHASH abstraction, and any casts that remain are "bugs". See
the callback types and macros at the head of lhash.h for details
(and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
[Geoff Thorpe]
*) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
If /dev/[u]random devices are not available or do not return enough
entropy, EGD style sockets (served by EGD or PRNGD) will automatically
be queried.
The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
/etc/entropy will be queried once each in this sequence, quering stops
when enough entropy was collected without querying more sockets.
[Lutz Jaenicke]
*) Change the Unix RAND_poll() variant to be able to poll several
random devices, as specified by DEVRANDOM, until a sufficient amount
of data has been collected. We spend at most 10 ms on each file
(select timeout) and read in non-blocking mode. DEVRANDOM now
defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
(previously it was just the string "/dev/urandom"), so on typical
platforms the 10 ms delay will never occur.
Also separate out the Unix variant to its own file, rand_unix.c.
For VMS, there's a currently-empty rand_vms.c.
[Richard Levitte]
*) Move OCSP client related routines to ocsp_cl.c. These
provide utility functions which an application needing
to issue a request to an OCSP responder and analyse the
response will typically need: as opposed to those which an
OCSP responder itself would need which will be added later.
OCSP_request_sign() signs an OCSP request with an API similar
to PKCS7_sign(). OCSP_response_status() returns status of OCSP
response. OCSP_response_get1_basic() extracts basic response
from response. OCSP_resp_find_status(): finds and extracts status
information from an OCSP_CERTID structure (which will be created
when the request structure is built). These are built from lower
level functions which work on OCSP_SINGLERESP structures but
wont normally be used unless the application wishes to examine
extensions in the OCSP response for example.
Replace nonce routines with a pair of functions.
OCSP_request_add1_nonce() adds a nonce value and optionally
generates a random value. OCSP_check_nonce() checks the
validity of the nonce in an OCSP response.
[Steve Henson]
*) Change function OCSP_request_add() to OCSP_request_add0_id().
This doesn't copy the supplied OCSP_CERTID and avoids the
need to free up the newly created id. Change return type
to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
This can then be used to add extensions to the request.
Deleted OCSP_request_new(), since most of its functionality
is now in OCSP_REQUEST_new() (and the case insensitive name
clash) apart from the ability to set the request name which
will be added elsewhere.
[Steve Henson]
*) Update OCSP API. Remove obsolete extensions argument from
various functions. Extensions are now handled using the new
OCSP extension code. New simple OCSP HTTP function which
can be used to send requests and parse the response.
[Steve Henson]
*) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
uses the special reorder version of SET OF to sort the attributes
and reorder them to match the encoded order. This resolves a long
standing problem: a verify on a PKCS7 structure just after signing
it used to fail because the attribute order did not match the
encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
it uses the received order. This is necessary to tolerate some broken
software that does not order SET OF. This is handled by encoding
as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
to produce the required SET OF.
[Steve Henson]
*) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
files to get correct declarations of the ASN.1 item variables.
[Richard Levitte]
*) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
ASN1_ITEM and no wrapper functions.
[Steve Henson]
*) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
replace the old function pointer based I/O routines. Change most of
the *_d2i_bio() and *_d2i_fp() functions to use these.
[Steve Henson]
*) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
lines, recognice more "algorithms" that can be deselected, and make
it complain about algorithm deselection that isn't recognised.
[Richard Levitte]
*) New ASN1 functions to handle dup, sign, verify, digest, pack and
unpack operations in terms of ASN1_ITEM. Modify existing wrappers
to use new functions. Add NO_ASN1_OLD which can be set to remove
some old style ASN1 functions: this can be used to determine if old
code will still work when these eventually go away.
[Steve Henson]
*) New extension functions for OCSP structures, these follow the
same conventions as certificates and CRLs.
[Steve Henson]
*) New function X509V3_add1_i2d(). This automatically encodes and
adds an extension. Its behaviour can be customised with various
flags to append, replace or delete. Various wrappers added for
certifcates and CRLs.
[Steve Henson]
*) Fix to avoid calling the underlying ASN1 print routine when
an extension cannot be parsed. Correct a typo in the
OCSP_SERVICELOC extension. Tidy up print OCSP format.
[Steve Henson]
*) Make mkdef.pl parse some of the ASN1 macros and add apropriate
entries for variables.
[Steve Henson]
*) Add functionality to apps/openssl.c for detecting locking
problems: As the program is single-threaded, all we have
to do is register a locking callback using an array for
storing which locks are currently held by the program.
[Bodo Moeller]
*) Use a lock around the call to CRYPTO_get_ex_new_index() in
SSL_get_ex_data_X509_STORE_idx(), which is used in
ssl_verify_cert_chain() and thus can be called at any time
during TLS/SSL handshakes so that thread-safety is essential.
Unfortunately, the ex_data design is not at all suited
for multi-threaded use, so it probably should be abolished.
[Bodo Moeller]
*) Added Broadcom "ubsec" ENGINE to OpenSSL.
[Broadcom, tweaked and integrated by Geoff Thorpe]
*) Move common extension printing code to new function
X509V3_print_extensions(). Reorganise OCSP print routines and
implement some needed OCSP ASN1 functions. Add OCSP extensions.
[Steve Henson]
*) New function X509_signature_print() to remove duplication in some
print routines.
[Steve Henson]
*) Add a special meaning when SET OF and SEQUENCE OF flags are both
set (this was treated exactly the same as SET OF previously). This
is used to reorder the STACK representing the structure to match the
encoding. This will be used to get round a problem where a PKCS7
structure which was signed could not be verified because the STACK
order did not reflect the encoded order.
[Steve Henson]
*) Reimplement the OCSP ASN1 module using the new code.
[Steve Henson]
*) Update the X509V3 code to permit the use of an ASN1_ITEM structure
for its ASN1 operations. The old style function pointers still exist
for now but they will eventually go away.
[Steve Henson]
*) Merge in replacement ASN1 code from the ASN1 branch. This almost
completely replaces the old ASN1 functionality with a table driven
encoder and decoder which interprets an ASN1_ITEM structure describing
the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
largely maintained. Almost all of the old asn1_mac.h macro based ASN1
has also been converted to the new form.
[Steve Henson]
*) Change BN_mod_exp_recp so that negative moduli are tolerated
(the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
so that BN_mod_exp_mont and BN_mod_exp_mont_word work
for negative moduli.
[Bodo Moeller]
*) Fix BN_uadd and BN_usub: Always return non-negative results instead
of not touching the result's sign bit.
[Bodo Moeller]
*) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
set.
[Bodo Moeller]
*) Changed the LHASH code to use prototypes for callbacks, and created
macros to declare and implement thin (optionally static) functions
that provide type-safety and avoid function pointer casting for the
type-specific callbacks.
[Geoff Thorpe]
*) Added Kerberos Cipher Suites to be used with TLS, as written in
RFC 2712.
[Veers Staats <[email protected]>,
Jeffrey Altman <[email protected]>, via Richard Levitte]
*) Reformat the FAQ so the different questions and answers can be divided
in sections depending on the subject.
[Richard Levitte]
*) Have the zlib compression code load ZLIB.DLL dynamically under
Windows.
[Richard Levitte]
*) New function BN_mod_sqrt for computing square roots modulo a prime
(using the probabilistic Tonelli-Shanks algorithm unless
p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
be handled deterministically).
[Lenka Fibikova <[email protected]>, Bodo Moeller]
*) Make BN_mod_inverse faster by explicitly handling small quotients
in the Euclid loop. (Speed gain about 20% for small moduli [256 or
512 bits], about 30% for larger ones [1024 or 2048 bits].)
[Bodo Moeller]
*) New function BN_kronecker.
[Bodo Moeller]
*) Fix BN_gcd so that it works on negative inputs; the result is
positive unless both parameters are zero.
Previously something reasonably close to an infinite loop was
possible because numbers could be growing instead of shrinking
in the implementation of Euclid's algorithm.
[Bodo Moeller]
*) Fix BN_is_word() and BN_is_one() macros to take into account the
sign of the number in question.
Fix BN_is_word(a,w) to work correctly for w == 0.
The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
because its test if the absolute value of 'a' equals 'w'.
Note that BN_abs_is_word does *not* handle w == 0 reliably;
it exists mostly for use in the implementations of BN_is_zero(),
BN_is_one(), and BN_is_word().
[Bodo Moeller]
*) New function BN_swap.
[Bodo Moeller]
*) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
the exponentiation functions are more likely to produce reasonable
results on negative inputs.
[Bodo Moeller]
*) Change BN_mod_mul so that the result is always non-negative.
Previously, it could be negative if one of the factors was negative;
I don't think anyone really wanted that behaviour.
[Bodo Moeller]
*) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
(except for exponentiation, which stays in crypto/bn/bn_exp.c,
and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
and add new functions:
BN_nnmod
BN_mod_sqr
BN_mod_add
BN_mod_add_quick
BN_mod_sub
BN_mod_sub_quick
BN_mod_lshift1
BN_mod_lshift1_quick
BN_mod_lshift
BN_mod_lshift_quick
These functions always generate non-negative results.
BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
be reduced modulo m.
[Lenka Fibikova <[email protected]>, Bodo Moeller]
#if 0
The following entry accidentily appeared in the CHANGES file
distributed with OpenSSL 0.9.7. The modifications described in
it do *not* apply to OpenSSL 0.9.7.
*) 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()
required a small change in bn_mul_part_recursive() and the addition
of the functions bn_cmp_part_words(), bn_sub_part_words() and
bn_add_part_words(), which do the same thing as bn_cmp_words(),
bn_sub_words() and bn_add_words() except they take arrays with
differing sizes.
[Richard Levitte]
#endif
*) In 'openssl passwd', verify passwords read from the terminal
unless the '-salt' option is used (which usually means that
verification would just waste user's time since the resulting
hash is going to be compared with some given password hash)
or the new '-noverify' option is used.
This is an incompatible change, but it does not affect
non-interactive use of 'openssl passwd' (passwords on the command
line, '-stdin' option, '-in ...' option) and thus should not
cause any problems.
[Bodo Moeller]
*) Remove all references to RSAref, since there's no more need for it.
[Richard Levitte]
*) Make DSO load along a path given through an environment variable
(SHLIB_PATH) with shl_load().
[Richard Levitte]
*) Constify the ENGINE code as a result of BIGNUM constification.
Also constify the RSA code and most things related to it. In a
few places, most notable in the depth of the ASN.1 code, ugly
casts back to non-const were required (to be solved at a later
time)
[Richard Levitte]
*) Make it so the openssl application has all engines loaded by default.
[Richard Levitte]
*) Constify the BIGNUM routines a little more.
[Richard Levitte]
*) Add the following functions:
ENGINE_load_cswift()
ENGINE_load_chil()
ENGINE_load_atalla()
ENGINE_load_nuron()
ENGINE_load_builtin_engines()
That way, an application can itself choose if external engines that
are built-in in OpenSSL shall ever be used or not. The benefit is
that applications won't have to be linked with libdl or other dso
libraries unless it's really needed.
Changed 'openssl engine' to load all engines on demand.
Changed the engine header files to avoid the duplication of some
declarations (they differed!).
[Richard Levitte]
*) 'openssl engine' can now list capabilities.
[Richard Levitte]
*) Better error reporting in 'openssl engine'.
[Richard Levitte]
*) Never call load_dh_param(NULL) in s_server.
[Bodo Moeller]
*) Add engine application. It can currently list engines by name and
identity, and test if they are actually available.
[Richard Levitte]
*) Improve RPM specification file by forcing symbolic linking and making
sure the installed documentation is also owned by root.root.
[Damien Miller <[email protected]>]
*) Give the OpenSSL applications more possibilities to make use of
keys (public as well as private) handled by engines.
[Richard Levitte]
*) Add OCSP code that comes from CertCo.
[Richard Levitte]
*) Add VMS support for the Rijndael code.
[Richard Levitte]
*) Added untested support for Nuron crypto accelerator.
[Ben Laurie]
*) Add support for external cryptographic devices. This code was
previously distributed separately as the "engine" branch.
[Geoff Thorpe, Richard Levitte]
*) Rework the filename-translation in the DSO code. It is now possible to
have far greater control over how a "name" is turned into a filename
depending on the operating environment and any oddities about the
different shared library filenames on each system.
[Geoff Thorpe]
*) Support threads on FreeBSD-elf in Configure.
[Richard Levitte]
*) Fix for SHA1 assembly problem with MASM: it produces
warnings about corrupt line number information when assembling
with debugging information. This is caused by the overlapping
of two sections.
[Bernd Matthes <[email protected]>, Steve Henson]
*) NCONF changes.
NCONF_get_number() has no error checking at all. As a replacement,
NCONF_get_number_e() is defined (_e for "error checking") and is
promoted strongly. The old NCONF_get_number is kept around for
binary backward compatibility.
Make it possible for methods to load from something other than a BIO,
by providing a function pointer that is given a name instead of a BIO.
For example, this could be used to load configuration data from an
LDAP server.
[Richard Levitte]
*) Fix for non blocking accept BIOs. Added new I/O special reason
BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
with non blocking I/O was not possible because no retry code was
implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
this case.
[Steve Henson]
*) Added the beginnings of Rijndael support.
[Ben Laurie]
*) Fix for bug in DirectoryString mask setting. Add support for
X509_NAME_print_ex() in 'req' and X509_print_ex() function
to allow certificate printing to more controllable, additional
'certopt' option to 'x509' to allow new printing options to be
set.
[Steve Henson]
*) Clean old EAY MD5 hack from e_os.h.
[Richard Levitte]
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 (CVE-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 (CVE-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 (CVE-2003-0543 and CVE-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
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).
[Bodo Moeller; problem pointed out by Matthias Loepfe]
*) Change X509_certificate_type() to mark the key as exported/exportable
when it's 512 *bits* long, not 512 bytes.
[Richard Levitte]
Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
*) Countermeasure against the Klima-Pokorny-Rosa extension of
Bleichbacher's attack on PKCS #1 v1.5 padding: treat
a protocol version number mismatch like a decryption error
in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
[Bodo Moeller]
*) Turn on RSA blinding by default in the default implementation
to avoid a timing attack. Applications that don't want it can call
RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
They would be ill-advised to do so in most cases.
[Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
*) Change RSA blinding code so that it works when the PRNG is not
seeded (in this case, the secret RSA exponent is abused as
an unpredictable seed -- if it is not unpredictable, there
is no point in blinding anyway). Make RSA blinding thread-safe
by remembering the creator's thread ID in rsa->blinding and
having all other threads use local one-time blinding factors
(this requires more computation than sharing rsa->blinding, but
avoids excessive locking; and if an RSA object is not shared
between threads, blinding will still be very fast).
[Bodo Moeller]
Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
*) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
via timing by performing a MAC computation even if incorrrect
block cipher padding has been found. This is a countermeasure
against active attacks where the attacker has to distinguish
between bad padding and a MAC verification error. (CVE-2003-0078)
[Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
Martin Vuagnoux (EPFL, Ilion)]
Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
*) New function OPENSSL_cleanse(), which is used to cleanse a section of
memory from it's contents. This is done with a counter that will
place alternating values in each byte. This can be used to solve
two issues: 1) the removal of calls to memset() by highly optimizing
compilers, and 2) cleansing with other values than 0, since those can
be read through on certain media, for example a swap space on disk.
[Geoff Thorpe]
*) Bugfix: client side session caching did not work with external caching,
because the session->cipher setting was not restored when reloading
from the external cache. This problem was masked, when
SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
(Found by Steve Haslam <[email protected]>.)
[Lutz Jaenicke]
*) Fix client_certificate (ssl/s2_clnt.c): The permissible total
length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
[Zeev Lieber <[email protected]>]
*) Undo an undocumented change introduced in 0.9.6e which caused
repeated calls to OpenSSL_add_all_ciphers() and
OpenSSL_add_all_digests() to be ignored, even after calling
EVP_cleanup().
[Richard Levitte]
*) Change the default configuration reader to deal with last line not
being properly terminated.
[Richard Levitte]
*) Change X509_NAME_cmp() so it applies the special rules on handling
DN values that are of type PrintableString, as well as RDNs of type
emailAddress where the value has the type ia5String.
[[email protected] via Richard Levitte]
*) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
the bitwise-OR of the two for use by the majority of applications
wanting this behaviour, and update the docs. The documented
behaviour and actual behaviour were inconsistent and had been
changing anyway, so this is more a bug-fix than a behavioural
change.
[Geoff Thorpe, diagnosed by Nadav Har'El]
*) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
(the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
[Bodo Moeller]
*) Fix initialization code race conditions in
SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
ssl2_get_cipher_by_char(),
ssl3_get_cipher_by_char().
[Patrick McCormick <[email protected]>, Bodo Moeller]
*) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
the cached sessions are flushed, as the remove_cb() might use ex_data
contents. Bug found by Sam Varshavchik <[email protected]>
(see [openssl.org #212]).
[Geoff Thorpe, Lutz Jaenicke]
*) Fix typo in OBJ_txt2obj which incorrectly passed the content
length, instead of the encoding length to d2i_ASN1_OBJECT.
[Steve Henson]
Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
*) [In 0.9.6g-engine release:]
Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
[Lynn Gazis <[email protected]>]
Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
*) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
and get fix the header length calculation.
[Florian Weimer <[email protected]>,
Alon Kantor <[email protected]> (and others),
Steve Henson]
*) Use proper error handling instead of 'assertions' in buffer
overflow checks added in 0.9.6e. This prevents DoS (the
assertions could call abort()).
[Arne Ansper <[email protected]>, Bodo Moeller]
Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
*) Add various sanity checks to asn1_get_length() to reject
the ASN1 length bytes if they exceed sizeof(long), will appear
negative or the content length exceeds the length of the
supplied buffer.
[Steve Henson, Adi Stav <[email protected]>, James Yonan <[email protected]>]
*) Fix cipher selection routines: ciphers without encryption had no flags
for the cipher strength set and where therefore not handled correctly
by the selection routines (PR #130).
[Lutz Jaenicke]
*) Fix EVP_dsa_sha macro.
[Nils Larsch]
*) New option
SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
that was added in OpenSSL 0.9.6d.
As the countermeasure turned out to be incompatible with some
broken SSL implementations, the new option is part of SSL_OP_ALL.
SSL_OP_ALL is usually employed when compatibility with weird SSL
implementations is desired (e.g. '-bugs' option to 's_client' and
's_server'), so the new option is automatically set in many
applications.
[Bodo Moeller]
*) Changes in security patch:
Changes marked "(CHATS)" were sponsored by the Defense Advanced
Research Projects Agency (DARPA) and Air Force Research Laboratory,
Air Force Materiel Command, USAF, under agreement number
F30602-01-2-0537.
*) Add various sanity checks to asn1_get_length() to reject
the ASN1 length bytes if they exceed sizeof(long), will appear
negative or the content length exceeds the length of the
supplied buffer. (CVE-2002-0659)
[Steve Henson, Adi Stav <[email protected]>, James Yonan <[email protected]>]
*) Assertions for various potential buffer overflows, not known to
happen in practice.
[Ben Laurie (CHATS)]
*) Various temporary buffers to hold ASCII versions of integers were
too small for 64 bit platforms. (CVE-2002-0655)
[Matthew Byng-Maddick <[email protected]> and Ben Laurie (CHATS)>
*) Remote buffer overflow in SSL3 protocol - an attacker could
supply an oversized session ID to a client. (CVE-2002-0656)
[Ben Laurie (CHATS)]
*) Remote buffer overflow in SSL2 protocol - an attacker could
supply an oversized client master key. (CVE-2002-0656)
[Ben Laurie (CHATS)]
Changes between 0.9.6c and 0.9.6d [9 May 2002]
*) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
encoded as NULL) with id-dsa-with-sha1.
[Nils Larsch <[email protected]>; problem pointed out by Bodo Moeller]
*) Check various X509_...() return values in apps/req.c.
[Nils Larsch <[email protected]>]
*) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
an end-of-file condition would erronously be flagged, when the CRLF
was just at the end of a processed block. The bug was discovered when
processing data through a buffering memory BIO handing the data to a
BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
<[email protected]> and Nedelcho Stanev.
[Lutz Jaenicke]
*) Implement a countermeasure against a vulnerability recently found
in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
before application data chunks to avoid the use of known IVs
with data potentially chosen by the attacker.
[Bodo Moeller]
*) Fix length checks in ssl3_get_client_hello().
[Bodo Moeller]
*) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
to prevent ssl3_read_internal() from incorrectly assuming that
ssl3_read_bytes() found application data while handshake
processing was enabled when in fact s->s3->in_read_app_data was
merely automatically cleared during the initial handshake.
[Bodo Moeller; problem pointed out by Arne Ansper <[email protected]>]
*) Fix object definitions for Private and Enterprise: they were not
recognized in their shortname (=lowercase) representation. Extend
obj_dat.pl to issue an error when using undefined keywords instead
of silently ignoring the problem (Svenning Sorensen
<[email protected]>).
[Lutz Jaenicke]
*) Fix DH_generate_parameters() so that it works for 'non-standard'
generators, i.e. generators other than 2 and 5. (Previously, the
code did not properly initialise the 'add' and 'rem' values to
BN_generate_prime().)
In the new general case, we do not insist that 'generator' is
actually a primitive root: This requirement is rather pointless;
a generator of the order-q subgroup is just as good, if not
better.
[Bodo Moeller]
*) Map new X509 verification errors to alerts. Discovered and submitted by
Tom Wu <[email protected]>.
[Lutz Jaenicke]
*) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
returning non-zero before the data has been completely received
when using non-blocking I/O.
[Bodo Moeller; problem pointed out by John Hughes]
*) Some of the ciphers missed the strength entry (SSL_LOW etc).
[Ben Laurie, Lutz Jaenicke]
*) Fix bug in SSL_clear(): bad sessions were not removed (found by
Yoram Zahavi <[email protected]>).
[Lutz Jaenicke]
*) Add information about CygWin 1.3 and on, and preserve proper
configuration for the versions before that.
[Corinna Vinschen <[email protected]> and Richard Levitte]
*) Make removal from session cache (SSL_CTX_remove_session()) more robust:
check whether we deal with a copy of a session and do not delete from
the cache in this case. Problem reported by "Izhar Shoshani Levi"
<[email protected]>.
[Lutz Jaenicke]
*) Do not store session data into the internal session cache, if it
is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
flag is set). Proposed by Aslam <[email protected]>.
[Lutz Jaenicke]
*) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
value is 0.
[Richard Levitte]
*) [In 0.9.6d-engine release:]
Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
[Toomas Kiisk <[email protected]> via Richard Levitte]
*) Add the configuration target linux-s390x.
[Neale Ferguson <[email protected]> via Richard Levitte]
*) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
variable as an indication that a ClientHello message has been
received. As the flag value will be lost between multiple
invocations of ssl3_accept when using non-blocking I/O, the
function may not be aware that a handshake has actually taken
place, thus preventing a new session from being added to the
session cache.
To avoid this problem, we now set s->new_session to 2 instead of
using a local variable.
[Lutz Jaenicke, Bodo Moeller]
*) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
if the SSL_R_LENGTH_MISMATCH error is detected.
[Geoff Thorpe, Bodo Moeller]
*) New 'shared_ldflag' column in Configure platform table.
[Richard Levitte]
*) Fix EVP_CIPHER_mode macro.
["Dan S. Camper" <[email protected]>]
*) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
type, we must throw them away by setting rr->length to 0.
[D P Chang <[email protected]>]
Changes between 0.9.6b and 0.9.6c [21 dec 2001]
*) Fix BN_rand_range bug pointed out by Dominikus Scherkl
<[email protected]>. (The previous implementation
worked incorrectly for those cases where range = 10..._2 and
3*range is two bits longer than range.)
[Bodo Moeller]
*) Only add signing time to PKCS7 structures if it is not already
present.
[Steve Henson]
*) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
OBJ_ld_ce should be OBJ_id_ce.
Also some ip-pda OIDs in crypto/objects/objects.txt were
incorrect (cf. RFC 3039).
[Matt Cooper, Frederic Giudicelli, Bodo Moeller]
*) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
returns early because it has nothing to do.
[Andy Schneider <[email protected]>]
*) [In 0.9.6c-engine release:]
Fix mutex callback return values in crypto/engine/hw_ncipher.c.
[Andy Schneider <[email protected]>]
*) [In 0.9.6c-engine release:]
Add support for Cryptographic Appliance's keyserver technology.
(Use engine 'keyclient')
[Cryptographic Appliances and Geoff Thorpe]
*) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
is called via tools/c89.sh because arguments have to be
rearranged (all '-L' options must appear before the first object
modules).
[Richard Shapiro <[email protected]>]
*) [In 0.9.6c-engine release:]
Add support for Broadcom crypto accelerator cards, backported
from 0.9.7.
[Broadcom, Nalin Dahyabhai <[email protected]>, Mark Cox]
*) [In 0.9.6c-engine release:]
Add support for SureWare crypto accelerator cards from
Baltimore Technologies. (Use engine 'sureware')
[Baltimore Technologies and Mark Cox]
*) [In 0.9.6c-engine release:]
Add support for crypto accelerator cards from Accelerated
Encryption Processing, www.aep.ie. (Use engine 'aep')
[AEP Inc. and Mark Cox]
*) Add a configuration entry for gcc on UnixWare.
[Gary Benson <[email protected]>]
*) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
messages are stored in a single piece (fixed-length part and
variable-length part combined) and fix various bugs found on the way.
[Bodo Moeller]
*) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
instead. BIO_gethostbyname() does not know what timeouts are
appropriate, so entries would stay in cache even when they have
become invalid.
[Bodo Moeller; problem pointed out by Rich Salz <[email protected]>
*) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
faced with a pathologically small ClientHello fragment that does
not contain client_version: Instead of aborting with an error,
simply choose the highest available protocol version (i.e.,
TLS 1.0 unless it is disabled). In practice, ClientHello
messages are never sent like this, but this change gives us
strictly correct behaviour at least for TLS.
[Bodo Moeller]
*) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
never resets s->method to s->ctx->method when called from within
one of the SSL handshake functions.
[Bodo Moeller; problem pointed out by Niko Baric]
*) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
(sent using the client's version number) if client_version is
smaller than the protocol version in use. Also change
ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
the client will at least see that alert.
[Bodo Moeller]
*) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
correctly.
[Bodo Moeller]
*) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
client receives HelloRequest while in a handshake.
[Bodo Moeller; bug noticed by Andy Schneider <[email protected]>]
*) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
should end in 'break', not 'goto end' which circuments various
cleanups done in state SSL_ST_OK. But session related stuff
must be disabled for SSL_ST_OK in the case that we just sent a
HelloRequest.
Also avoid some overhead by not calling ssl_init_wbio_buffer()
before just sending a HelloRequest.
[Bodo Moeller, Eric Rescorla <[email protected]>]
*) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
reveal whether illegal block cipher padding was found or a MAC
verification error occured. (Neither SSLerr() codes nor alerts
are directly visible to potential attackers, but the information
may leak via logfiles.)
Similar changes are not required for the SSL 2.0 implementation
because the number of padding bytes is sent in clear for SSL 2.0,
and the extra bytes are just ignored. However ssl/s2_pkt.c
failed to verify that the purported number of padding bytes is in
the legal range.
[Bodo Moeller]
*) Add OpenUNIX-8 support including shared libraries
(Boyd Lynn Gerber <[email protected]>).
[Lutz Jaenicke]
*) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
'wristwatch attack' using huge encoding parameters (cf.
James H. Manger's CRYPTO 2001 paper). Note that the
RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
encoding parameters and hence was not vulnerable.
[Bodo Moeller]
*) BN_sqr() bug fix.
[Ulf M�ller, reported by Jim Ellis <[email protected]>]
*) Rabin-Miller test analyses assume uniformly distributed witnesses,
so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
followed by modular reduction.
[Bodo Moeller; pointed out by Adam Young <[email protected]>]
*) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
equivalent based on BN_pseudo_rand() instead of BN_rand().
[Bodo Moeller]
*) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
This function was broken, as the check for a new client hello message
to handle SGC did not allow these large messages.
(Tracked down by "Douglas E. Engert" <[email protected]>.)
[Lutz Jaenicke]
*) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
[Lutz Jaenicke]
*) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <[email protected]>).
[Lutz Jaenicke]
*) Rework the configuration and shared library support for Tru64 Unix.
The configuration part makes use of modern compiler features and
still retains old compiler behavior for those that run older versions
of the OS. The shared library support part includes a variant that
uses the RPATH feature, and is available through the special
configuration target "alpha-cc-rpath", which will never be selected
automatically.
[Tim Mooney <[email protected]> via Richard Levitte]
*) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
with the same message size as in ssl3_get_certificate_request().
Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
messages might inadvertently be reject as too long.
[Petr Lampa <[email protected]>]
*) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
[Andy Polyakov]
*) Modified SSL library such that the verify_callback that has been set
specificly for an SSL object with SSL_set_verify() is actually being
used. Before the change, a verify_callback set with this function was
ignored and the verify_callback() set in the SSL_CTX at the time of
the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
to allow the necessary settings.
[Lutz Jaenicke]
*) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
explicitly to NULL, as at least on Solaris 8 this seems not always to be
done automatically (in contradiction to the requirements of the C
standard). This made problems when used from OpenSSH.
[Lutz Jaenicke]
*) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
dh->length and always used
BN_rand_range(priv_key, dh->p).
BN_rand_range() is not necessary for Diffie-Hellman, and this
specific range makes Diffie-Hellman unnecessarily inefficient if
dh->length (recommended exponent length) is much smaller than the
length of dh->p. We could use BN_rand_range() if the order of
the subgroup was stored in the DH structure, but we only have
dh->length.
So switch back to
BN_rand(priv_key, l, ...)
where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
otherwise.
[Bodo Moeller]
*) In
RSA_eay_public_encrypt
RSA_eay_private_decrypt
RSA_eay_private_encrypt (signing)
RSA_eay_public_decrypt (signature verification)
(default implementations for RSA_public_encrypt,
RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
always reject numbers >= n.
[Bodo Moeller]
*) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
to synchronize access to 'locking_thread'. This is necessary on
systems where access to 'locking_thread' (an 'unsigned long'
variable) is not atomic.
[Bodo Moeller]
*) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
*before* setting the 'crypto_lock_rand' flag. The previous code had
a race condition if 0 is a valid thread ID.
[Travis Vitek <[email protected]>]
*) Add support for shared libraries under Irix.
[Albert Chin-A-Young <[email protected]>]
*) Add configuration option to build on Linux on both big-endian and
little-endian MIPS.
[Ralf Baechle <[email protected]>]
*) Add the possibility to create shared libraries on HP-UX.
[Richard Levitte]
Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
*) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
Markku-Juhani O. Saarinen <[email protected]>:
PRNG state recovery was possible based on the output of
one PRNG request appropriately sized to gain knowledge on
'md' followed by enough consecutive 1-byte PRNG requests
to traverse all of 'state'.
1. When updating 'md_local' (the current thread's copy of 'md')
during PRNG output generation, hash all of the previous
'md_local' value, not just the half used for PRNG output.
2. Make the number of bytes from 'state' included into the hash
independent from the number of PRNG bytes requested.
The first measure alone would be sufficient to avoid
Markku-Juhani's attack. (Actually it had never occurred
to me that the half of 'md_local' used for chaining was the
half from which PRNG output bytes were taken -- I had always
assumed that the secret half would be used.) The second
measure makes sure that additional data from 'state' is never
mixed into 'md_local' in small portions; this heuristically
further strengthens the PRNG.
[Bodo Moeller]
*) Fix crypto/bn/asm/mips3.s.
[Andy Polyakov]
*) When only the key is given to "enc", the IV is undefined. Print out
an error message in this case.
[Lutz Jaenicke]
*) Handle special case when X509_NAME is empty in X509 printing routines.
[Steve Henson]
*) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
positive and less than q.
[Bodo Moeller]
*) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
used: it isn't thread safe and the add_lock_callback should handle
that itself.
[Paul Rose <[email protected]>]
*) Verify that incoming data obeys the block size in
ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
[Bodo Moeller]
*) Fix OAEP check.
[Ulf M�ller, Bodo M�ller]
*) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
when fixing the server behaviour for backwards-compatible 'client
hello' messages. (Note that the attack is impractical against
SSL 3.0 and TLS 1.0 anyway because length and version checking
means that the probability of guessing a valid ciphertext is
around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
paper.)
Before 0.9.5, the countermeasure (hide the error by generating a
random 'decryption result') did not work properly because
ERR_clear_error() was missing, meaning that SSL_get_error() would
detect the supposedly ignored error.
Both problems are now fixed.
[Bodo Moeller]
*) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
(previously it was 1024).
[Bodo Moeller]
*) Fix for compatibility mode trust settings: ignore trust settings
unless some valid trust or reject settings are present.
[Steve Henson]
*) Fix for blowfish EVP: its a variable length cipher.
[Steve Henson]
*) Fix various bugs related to DSA S/MIME verification. Handle missing
parameters in DSA public key structures and return an error in the
DSA routines if parameters are absent.
[Steve Henson]
*) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
in the current directory if neither $RANDFILE nor $HOME was set.
RAND_file_name() in 0.9.6a returned NULL in this case. This has
caused some confusion to Windows users who haven't defined $HOME.
Thus RAND_file_name() is changed again: e_os.h can define a
DEFAULT_HOME, which will be used if $HOME is not set.
For Windows, we use "C:"; on other platforms, we still require
environment variables.
*) Move 'if (!initialized) RAND_poll()' into regions protected by
CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
having multiple threads call RAND_poll() concurrently.
[Bodo Moeller]
*) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
combination of a flag and a thread ID variable.
Otherwise while one thread is in ssleay_rand_bytes (which sets the
flag), *other* threads can enter ssleay_add_bytes without obeying
the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
that they do not hold after the first thread unsets add_do_not_lock).
[Bodo Moeller]
*) Change bctest again: '-x' expressions are not available in all
versions of 'test'.
[Bodo Moeller]
Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
*) Fix a couple of memory leaks in PKCS7_dataDecode()
[Steve Henson, reported by Heyun Zheng <[email protected]>]
*) Change Configure and Makefiles to provide EXE_EXT, which will contain
the default extension for executables, if any. Also, make the perl
scripts that use symlink() to test if it really exists and use "cp"
if it doesn't. All this made OpenSSL compilable and installable in
CygWin.
[Richard Levitte]
*) Fix for asn1_GetSequence() for indefinite length constructed data.
If SEQUENCE is length is indefinite just set c->slen to the total
amount of data available.
[Steve Henson, reported by [email protected]]
[This change does not apply to 0.9.7.]
*) Change bctest to avoid here-documents inside command substitution
(workaround for FreeBSD /bin/sh bug).
For compatibility with Ultrix, avoid shell functions (introduced
in the bctest version that searches along $PATH).
[Bodo Moeller]
*) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
with des_encrypt() defined on some operating systems, like Solaris
and UnixWare.
[Richard Levitte]
*) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
On the Importance of Eliminating Errors in Cryptographic
Computations, J. Cryptology 14 (2001) 2, 101-119,
http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
[Ulf Moeller]
*) MIPS assembler BIGNUM division bug fix.
[Andy Polyakov]
*) Disabled incorrect Alpha assembler code.
[Richard Levitte]
*) Fix PKCS#7 decode routines so they correctly update the length
after reading an EOC for the EXPLICIT tag.
[Steve Henson]
[This change does not apply to 0.9.7.]
*) Fix bug in PKCS#12 key generation routines. This was triggered
if a 3DES key was generated with a 0 initial byte. Include
PKCS12_BROKEN_KEYGEN compilation option to retain the old
(but broken) behaviour.
[Steve Henson]
*) Enhance bctest to search for a working bc along $PATH and print
it when found.
[Tim Rice <[email protected]> via Richard Levitte]
*) Fix memory leaks in err.c: free err_data string if necessary;
don't write to the wrong index in ERR_set_error_data.
[Bodo Moeller]
*) Implement ssl23_peek (analogous to ssl23_read), which previously
did not exist.
[Bodo Moeller]
*) Replace rdtsc with _emit statements for VC++ version 5.
[Jeremy Cooper <[email protected]>]
*) Make it possible to reuse SSLv2 sessions.
[Richard Levitte]
*) In copy_email() check for >= 0 as a return value for
X509_NAME_get_index_by_NID() since 0 is a valid index.
[Steve Henson reported by Massimiliano Pala <[email protected]>]
*) Avoid coredump with unsupported or invalid public keys by checking if
X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
PKCS7_verify() fails with non detached data.
[Steve Henson]
*) Don't use getenv in library functions when run as setuid/setgid.
New function OPENSSL_issetugid().
[Ulf Moeller]
*) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
due to incorrect handling of multi-threading:
1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
3. Count how many times MemCheck_off() has been called so that
nested use can be treated correctly. This also avoids
inband-signalling in the previous code (which relied on the
assumption that thread ID 0 is impossible).
[Bodo Moeller]
*) Add "-rand" option also to s_client and s_server.
[Lutz Jaenicke]
*) Fix CPU detection on Irix 6.x.
[Kurt Hockenbury <[email protected]> and
"Bruce W. Forsberg" <[email protected]>]
*) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
was empty.
[Steve Henson]
[This change does not apply to 0.9.7.]
*) Use the cached encoding of an X509_NAME structure rather than
copying it. This is apparently the reason for the libsafe "errors"
but the code is actually correct.
[Steve Henson]
*) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
Bleichenbacher's DSA attack.
Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
to be set and top=0 forces the highest bit to be set; top=-1 is new
and leaves the highest bit random.
[Ulf Moeller, Bodo Moeller]
*) In the NCONF_...-based implementations for CONF_... queries
(crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
a temporary CONF structure with the data component set to NULL
(which gives segmentation faults in lh_retrieve).
Instead, use NULL for the CONF pointer in CONF_get_string and
CONF_get_number (which may use environment variables) and directly
return NULL from CONF_get_section.
[Bodo Moeller]
*) Fix potential buffer overrun for EBCDIC.
[Ulf Moeller]
*) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
keyUsage if basicConstraints absent for a CA.
[Steve Henson]
*) Make SMIME_write_PKCS7() write mail header values with a format that
is more generally accepted (no spaces before the semicolon), since
some programs can't parse those values properly otherwise. Also make
sure BIO's that break lines after each write do not create invalid
headers.
[Richard Levitte]
*) Make the CRL encoding routines work with empty SEQUENCE OF. The
macros previously used would not encode an empty SEQUENCE OF
and break the signature.
[Steve Henson]
[This change does not apply to 0.9.7.]
*) Zero the premaster secret after deriving the master secret in
DH ciphersuites.
[Steve Henson]
*) Add some EVP_add_digest_alias registrations (as found in
OpenSSL_add_all_digests()) to SSL_library_init()
aka OpenSSL_add_ssl_algorithms(). This provides improved
compatibility with peers using X.509 certificates
with unconventional AlgorithmIdentifier OIDs.
[Bodo Moeller]
*) Fix for Irix with NO_ASM.
["Bruce W. Forsberg" <[email protected]>]
*) ./config script fixes.
[Ulf Moeller, Richard Levitte]
*) Fix 'openssl passwd -1'.
[Bodo Moeller]
*) Change PKCS12_key_gen_asc() so it can cope with non null
terminated strings whose length is passed in the passlen
parameter, for example from PEM callbacks. This was done
by adding an extra length parameter to asc2uni().
[Steve Henson, reported by <[email protected]>]
*) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
call failed, free the DSA structure.
[Bodo Moeller]
*) Fix to uni2asc() to cope with zero length Unicode strings.
These are present in some PKCS#12 files.
[Steve Henson]
*) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
when writing a 32767 byte record.
[Bodo Moeller; problem reported by Eric Day <[email protected]>]
*) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
(RSA objects have a reference count access to which is protected
by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
so they are meant to be shared between threads.)
[Bodo Moeller, Geoff Thorpe; original patch submitted by
"Reddie, Steven" <[email protected]>]
*) Fix a deadlock in CRYPTO_mem_leaks().
[Bodo Moeller]
*) Use better test patterns in bntest.
[Ulf M�ller]
*) rand_win.c fix for Borland C.
[Ulf M�ller]
*) BN_rshift bugfix for n == 0.
[Bodo Moeller]
*) Add a 'bctest' script that checks for some known 'bc' bugs
so that 'make test' does not abort just because 'bc' is broken.
[Bodo Moeller]
*) Store verify_result within SSL_SESSION also for client side to
avoid potential security hole. (Re-used sessions on the client side
always resulted in verify_result==X509_V_OK, not using the original
result of the server certificate verification.)
[Lutz Jaenicke]
*) Fix ssl3_pending: If the record in s->s3->rrec is not of type
SSL3_RT_APPLICATION_DATA, return 0.
Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
[Bodo Moeller]
*) Fix SSL_peek:
Both ssl2_peek and ssl3_peek, which were totally broken in earlier
releases, have been re-implemented by renaming the previous
implementations of ssl2_read and ssl3_read to ssl2_read_internal
and ssl3_read_internal, respectively, and adding 'peek' parameters
to them. The new ssl[23]_{read,peek} functions are calls to
ssl[23]_read_internal with the 'peek' flag set appropriately.
A 'peek' parameter has also been added to ssl3_read_bytes, which
does the actual work for ssl3_read_internal.
[Bodo Moeller]
*) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
the method-specific "init()" handler. Also clean up ex_data after
calling the method-specific "finish()" handler. Previously, this was
happening the other way round.
[Geoff Thorpe]
*) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
The previous value, 12, was not always sufficient for BN_mod_exp().
[Bodo Moeller]
*) Make sure that shared libraries get the internal name engine with
the full version number and not just 0. This should mark the
shared libraries as not backward compatible. Of course, this should
be changed again when we can guarantee backward binary compatibility.
[Richard Levitte]
*) Fix typo in get_cert_by_subject() in by_dir.c
[Jean-Marc Desperrier <[email protected]>]
*) Rework the system to generate shared libraries:
- Make note of the expected extension for the shared libraries and
if there is a need for symbolic links from for example libcrypto.so.0
to libcrypto.so.0.9.7. There is extended info in Configure for
that.
- Make as few rebuilds of the shared libraries as possible.
- Still avoid linking the OpenSSL programs with the shared libraries.
- When installing, install the shared libraries separately from the
static ones.
[Richard Levitte]
*) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
and not in SSL_clear because the latter is also used by the
accept/connect functions; previously, the settings made by
SSL_set_read_ahead would be lost during the handshake.
[Bodo Moeller; problems reported by Anders Gertz <[email protected]>]
*) Correct util/mkdef.pl to be selective about disabled algorithms.
Previously, it would create entries for disableed algorithms no
matter what.
[Richard Levitte]
*) Added several new manual pages for SSL_* function.
[Lutz Jaenicke]
Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
*) In ssl23_get_client_hello, generate an error message when faced
with an initial SSL 3.0/TLS record that is too small to contain the
first two bytes of the ClientHello message, i.e. client_version.
(Note that this is a pathologic case that probably has never happened
in real life.) The previous approach was to use the version number
from the record header as a substitute; but our protocol choice
should not depend on that one because it is not authenticated
by the Finished messages.
[Bodo Moeller]
*) More robust randomness gathering functions for Windows.
[Jeffrey Altman <[email protected]>]
*) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
not set then we don't setup the error code for issuer check errors
to avoid possibly overwriting other errors which the callback does
handle. If an application does set the flag then we assume it knows
what it is doing and can handle the new informational codes
appropriately.
[Steve Henson]
*) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
a general "ANY" type, as such it should be able to decode anything
including tagged types. However it didn't check the class so it would
wrongly interpret tagged types in the same way as their universal
counterpart and unknown types were just rejected. Changed so that the
tagged and unknown types are handled in the same way as a SEQUENCE:
that is the encoding is stored intact. There is also a new type
"V_ASN1_OTHER" which is used when the class is not universal, in this
case we have no idea what the actual type is so we just lump them all
together.
[Steve Henson]
*) On VMS, stdout may very well lead to a file that is written to
in a record-oriented fashion. That means that every write() will
write a separate record, which will be read separately by the
programs trying to read from it. This can be very confusing.
The solution is to put a BIO filter in the way that will buffer
text until a linefeed is reached, and then write everything a
line at a time, so every record written will be an actual line,
not chunks of lines and not (usually doesn't happen, but I've
seen it once) several lines in one record. BIO_f_linebuffer() is
the answer.
Currently, it's a VMS-only method, because that's where it has
been tested well enough.
[Richard Levitte]
*) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
it can return incorrect results.
(Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
but it was in 0.9.6-beta[12].)
[Bodo Moeller]
*) Disable the check for content being present when verifying detached
signatures in pk7_smime.c. Some versions of Netscape (wrongly)
include zero length content when signing messages.
[Steve Henson]
*) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
BIO_ctrl (for BIO pairs).
[Bodo M�ller]
*) Add DSO method for VMS.
[Richard Levitte]
*) Bug fix: Montgomery multiplication could produce results with the
wrong sign.
[Ulf M�ller]
*) Add RPM specification openssl.spec and modify it to build three
packages. The default package contains applications, application
documentation and run-time libraries. The devel package contains
include files, static libraries and function documentation. The
doc package contains the contents of the doc directory. The original
openssl.spec was provided by Damien Miller <[email protected]>.
[Richard Levitte]
*) Add a large number of documentation files for many SSL routines.
[Lutz Jaenicke <[email protected]>]
*) Add a configuration entry for Sony News 4.
[NAKAJI Hiroyuki <[email protected]>]
*) Don't set the two most significant bits to one when generating a
random number < q in the DSA library.
[Ulf M�ller]
*) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
the underlying transport is blocking) if a handshake took place.
(The default behaviour is needed by applications such as s_client
and s_server that use select() to determine when to use SSL_read;
but for applications that know in advance when to expect data, it
just makes things more complicated.)
[Bodo Moeller]
*) Add RAND_egd_bytes(), which gives control over the number of bytes read
from EGD.
[Ben Laurie]
*) Add a few more EBCDIC conditionals that make `req' and `x509'
work better on such systems.
[Martin Kraemer <[email protected]>]
*) Add two demo programs for PKCS12_parse() and PKCS12_create().
Update PKCS12_parse() so it copies the friendlyName and the
keyid to the certificates aux info.
[Steve Henson]
*) Fix bug in PKCS7_verify() which caused an infinite loop
if there was more than one signature.
[Sven Uszpelkat <[email protected]>]
*) Major change in util/mkdef.pl to include extra information
about each symbol, as well as presentig variables as well
as functions. This change means that there's n more need
to rebuild the .num files when some algorithms are excluded.
[Richard Levitte]
*) Allow the verify time to be set by an application,
rather than always using the current time.
[Steve Henson]
*) Phase 2 verify code reorganisation. The certificate
verify code now looks up an issuer certificate by a
number of criteria: subject name, authority key id
and key usage. It also verifies self signed certificates
by the same criteria. The main comparison function is
X509_check_issued() which performs these checks.
Lot of changes were necessary in order to support this
without completely rewriting the lookup code.
Authority and subject key identifier are now cached.
The LHASH 'certs' is X509_STORE has now been replaced
by a STACK_OF(X509_OBJECT). This is mainly because an
LHASH can't store or retrieve multiple objects with
the same hash value.
As a result various functions (which were all internal
use only) have changed to handle the new X509_STORE
structure. This will break anything that messed round
with X509_STORE internally.
The functions X509_STORE_add_cert() now checks for an
exact match, rather than just subject name.
The X509_STORE API doesn't directly support the retrieval
of multiple certificates matching a given criteria, however
this can be worked round by performing a lookup first
(which will fill the cache with candidate certificates)
and then examining the cache for matches. This is probably
the best we can do without throwing out X509_LOOKUP
entirely (maybe later...).
The X509_VERIFY_CTX structure has been enhanced considerably.
All certificate lookup operations now go via a get_issuer()
callback. Although this currently uses an X509_STORE it
can be replaced by custom lookups. This is a simple way
to bypass the X509_STORE hackery necessary to make this
work and makes it possible to use more efficient techniques
in future. A very simple version which uses a simple
STACK for its trusted certificate store is also provided
using X509_STORE_CTX_trusted_stack().
The verify_cb() and verify() callbacks now have equivalents
in the X509_STORE_CTX structure.
X509_STORE_CTX also has a 'flags' field which can be used
to customise the verify behaviour.
[Steve Henson]
*) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
excludes S/MIME capabilities.
[Steve Henson]
*) When a certificate request is read in keep a copy of the
original encoding of the signed data and use it when outputing
again. Signatures then use the original encoding rather than
a decoded, encoded version which may cause problems if the
request is improperly encoded.
[Steve Henson]
*) For consistency with other BIO_puts implementations, call
buffer_write(b, ...) directly in buffer_puts instead of calling
BIO_write(b, ...).
In BIO_puts, increment b->num_write as in BIO_write.
[[email protected]]
*) Fix BN_mul_word for the case where the word is 0. (We have to use
BN_zero, we may not return a BIGNUM with an array consisting of
words set to zero.)
[Bodo Moeller]
*) Avoid calling abort() from within the library when problems are
detected, except if preprocessor symbols have been defined
(such as REF_CHECK, BN_DEBUG etc.).
[Bodo Moeller]
*) New openssl application 'rsautl'. This utility can be
used for low level RSA operations. DER public key
BIO/fp routines also added.
[Steve Henson]
*) New Configure entry and patches for compiling on QNX 4.
[Andreas Schneider <[email protected]>]
*) A demo state-machine implementation was sponsored by
Nuron (http://www.nuron.com/) and is now available in
demos/state_machine.
[Ben Laurie]
*) New options added to the 'dgst' utility for signature
generation and verification.
[Steve Henson]
*) Unrecognized PKCS#7 content types are now handled via a
catch all ASN1_TYPE structure. This allows unsupported
types to be stored as a "blob" and an application can
encode and decode it manually.
[Steve Henson]
*) Fix various signed/unsigned issues to make a_strex.c
compile under VC++.
[Oscar Jacobsson <[email protected]>]
*) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
length if passed a buffer. ASN1_INTEGER_to_BN failed
if passed a NULL BN and its argument was negative.
[Steve Henson, pointed out by Sven Heiberg <[email protected]>]
*) Modification to PKCS#7 encoding routines to output definite
length encoding. Since currently the whole structures are in
memory there's not real point in using indefinite length
constructed encoding. However if OpenSSL is compiled with
the flag PKCS7_INDEFINITE_ENCODING the old form is used.
[Steve Henson]
*) Added BIO_vprintf() and BIO_vsnprintf().
[Richard Levitte]
*) Added more prefixes to parse for in the the strings written
through a logging bio, to cover all the levels that are available
through syslog. The prefixes are now:
PANIC, EMERG, EMR => LOG_EMERG
ALERT, ALR => LOG_ALERT
CRIT, CRI => LOG_CRIT
ERROR, ERR => LOG_ERR
WARNING, WARN, WAR => LOG_WARNING
NOTICE, NOTE, NOT => LOG_NOTICE
INFO, INF => LOG_INFO
DEBUG, DBG => LOG_DEBUG
and as before, if none of those prefixes are present at the
beginning of the string, LOG_ERR is chosen.
On Win32, the LOG_* levels are mapped according to this:
LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
LOG_WARNING => EVENTLOG_WARNING_TYPE
LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
[Richard Levitte]
*) Made it possible to reconfigure with just the configuration
argument "reconf" or "reconfigure". The command line arguments
are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
and are retrieved from there when reconfiguring.
[Richard Levitte]
*) MD4 implemented.
[Assar Westerlund <[email protected]>, Richard Levitte]
*) Add the arguments -CAfile and -CApath to the pkcs12 utility.
[Richard Levitte]
*) The obj_dat.pl script was messing up the sorting of object
names. The reason was that it compared the quoted version
of strings as a result "OCSP" > "OCSP Signing" because
" > SPACE. Changed script to store unquoted versions of
names and add quotes on output. It was also omitting some
names from the lookup table if they were given a default
value (that is if SN is missing it is given the same
value as LN and vice versa), these are now added on the
grounds that if an object has a name we should be able to
look it up. Finally added warning output when duplicate
short or long names are found.
[Steve Henson]
*) Changes needed for Tandem NSK.
[Scott Uroff <[email protected]>]
*) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
RSA_padding_check_SSLv23(), special padding was never detected
and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
version rollback attacks was not effective.
In s23_clnt.c, don't use special rollback-attack detection padding
(RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
client; similarly, in s23_srvr.c, don't do the rollback check if
SSL 2.0 is the only protocol enabled in the server.
[Bodo Moeller]
*) Make it possible to get hexdumps of unprintable data with 'openssl
asn1parse'. By implication, the functions ASN1_parse_dump() and
BIO_dump_indent() are added.
[Richard Levitte]
*) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
these print out strings and name structures based on various
flags including RFC2253 support and proper handling of
multibyte characters. Added options to the 'x509' utility
to allow the various flags to be set.
[Steve Henson]
*) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
Also change the functions X509_cmp_current_time() and
X509_gmtime_adj() work with an ASN1_TIME structure,
this will enable certificates using GeneralizedTime in validity
dates to be checked.
[Steve Henson]
*) Make the NEG_PUBKEY_BUG code (which tolerates invalid
negative public key encodings) on by default,
NO_NEG_PUBKEY_BUG can be set to disable it.
[Steve Henson]
*) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
content octets. An i2c_ASN1_OBJECT is unnecessary because
the encoding can be trivially obtained from the structure.
[Steve Henson]
*) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
not read locks (CRYPTO_r_[un]lock).
[Bodo Moeller]
*) A first attempt at creating official support for shared
libraries through configuration. I've kept it so the
default is static libraries only, and the OpenSSL programs
are always statically linked for now, but there are
preparations for dynamic linking in place.
This has been tested on Linux and Tru64.
[Richard Levitte]
*) Randomness polling function for Win9x, as described in:
Peter Gutmann, Software Generation of Practically Strong
Random Numbers.
[Ulf M�ller]
*) Fix so PRNG is seeded in req if using an already existing
DSA key.
[Steve Henson]
*) New options to smime application. -inform and -outform
allow alternative formats for the S/MIME message including
PEM and DER. The -content option allows the content to be
specified separately. This should allow things like Netscape
form signing output easier to verify.
[Steve Henson]
*) Fix the ASN1 encoding of tags using the 'long form'.
[Steve Henson]
*) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
STRING types. These convert content octets to and from the
underlying type. The actual tag and length octets are
already assumed to have been read in and checked. These
are needed because all other string types have virtually
identical handling apart from the tag. By having versions
of the ASN1 functions that just operate on content octets
IMPLICIT tagging can be handled properly. It also allows
the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
and ASN1_INTEGER are identical apart from the tag.
[Steve Henson]
*) Change the handling of OID objects as follows:
- New object identifiers are inserted in objects.txt, following
the syntax given in objects.README.
- objects.pl is used to process obj_mac.num and create a new
obj_mac.h.
- obj_dat.pl is used to create a new obj_dat.h, using the data in
obj_mac.h.
This is currently kind of a hack, and the perl code in objects.pl
isn't very elegant, but it works as I intended. The simplest way
to check that it worked correctly is to look in obj_dat.h and
check the array nid_objs and make sure the objects haven't moved
around (this is important!). Additions are OK, as well as
consistent name changes.
[Richard Levitte]
*) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
[Bodo Moeller]
*) Addition of the command line parameter '-rand file' to 'openssl req'.
The given file adds to whatever has already been seeded into the
random pool through the RANDFILE configuration file option or
environment variable, or the default random state file.
[Richard Levitte]
*) mkstack.pl now sorts each macro group into lexical order.
Previously the output order depended on the order the files
appeared in the directory, resulting in needless rewriting
of safestack.h .
[Steve Henson]
*) Patches to make OpenSSL compile under Win32 again. Mostly
work arounds for the VC++ problem that it treats func() as
func(void). Also stripped out the parts of mkdef.pl that
added extra typesafe functions: these no longer exist.
[Steve Henson]
*) Reorganisation of the stack code. The macros are now all
collected in safestack.h . Each macro is defined in terms of
a "stack macro" of the form SKM_<name>(type, a, b). The
DEBUG_SAFESTACK is now handled in terms of function casts,
this has the advantage of retaining type safety without the
use of additional functions. If DEBUG_SAFESTACK is not defined
then the non typesafe macros are used instead. Also modified the
mkstack.pl script to handle the new form. Needs testing to see
if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
the default if no major problems. Similar behaviour for ASN1_SET_OF
and PKCS12_STACK_OF.
[Steve Henson]
*) When some versions of IIS use the 'NET' form of private key the
key derivation algorithm is different. Normally MD5(password) is
used as a 128 bit RC4 key. In the modified case
MD5(MD5(password) + "SGCKEYSALT") is used insted. Added some
new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
as the old Netscape_RSA functions except they have an additional
'sgckey' parameter which uses the modified algorithm. Also added
an -sgckey command line option to the rsa utility. Thanks to
Adrian Peck <[email protected]> for posting details of the modified
algorithm to openssl-dev.
[Steve Henson]
*) The evp_local.h macros were using 'c.##kname' which resulted in
invalid expansion on some systems (SCO 5.0.5 for example).
Corrected to 'c.kname'.
[Phillip Porch <[email protected]>]
*) New X509_get1_email() and X509_REQ_get1_email() functions that return
a STACK of email addresses from a certificate or request, these look
in the subject name and the subject alternative name extensions and
omit any duplicate addresses.
[Steve Henson]
*) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
This makes DSA verification about 2 % faster.
[Bodo Moeller]
*) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
(meaning that now 2^5 values will be precomputed, which is only 4 KB
plus overhead for 1024 bit moduli).
This makes exponentiations about 0.5 % faster for 1024 bit
exponents (as measured by "openssl speed rsa2048").
[Bodo Moeller]
*) Rename memory handling macros to avoid conflicts with other
software:
Malloc => OPENSSL_malloc
Malloc_locked => OPENSSL_malloc_locked
Realloc => OPENSSL_realloc
Free => OPENSSL_free
[Richard Levitte]
*) New function BN_mod_exp_mont_word for small bases (roughly 15%
faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
[Bodo Moeller]
*) CygWin32 support.
[John Jarvie <[email protected]>]
*) The type-safe stack code has been rejigged. It is now only compiled
in when OpenSSL is configured with the DEBUG_SAFESTACK option and
by default all type-specific stack functions are "#define"d back to
standard stack functions. This results in more streamlined output
but retains the type-safety checking possibilities of the original
approach.
[Geoff Thorpe]
*) The STACK code has been cleaned up, and certain type declarations
that didn't make a lot of sense have been brought in line. This has
also involved a cleanup of sorts in safestack.h to more correctly
map type-safe stack functions onto their plain stack counterparts.
This work has also resulted in a variety of "const"ifications of
lots of the code, especially "_cmp" operations which should normally
be prototyped with "const" parameters anyway.
[Geoff Thorpe]
*) When generating bytes for the first time in md_rand.c, 'stir the pool'
by seeding with STATE_SIZE dummy bytes (with zero entropy count).
(The PRNG state consists of two parts, the large pool 'state' and 'md',
where all of 'md' is used each time the PRNG is used, but 'state'
is used only indexed by a cyclic counter. As entropy may not be
well distributed from the beginning, 'md' is important as a
chaining variable. However, the output function chains only half
of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
all of 'md', and seeding with STATE_SIZE dummy bytes will result
in all of 'state' being rewritten, with the new values depending
on virtually all of 'md'. This overcomes the 80 bit limitation.)
[Bodo Moeller]
*) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
the handshake is continued after ssl_verify_cert_chain();
otherwise, if SSL_VERIFY_NONE is set, remaining error codes
can lead to 'unexplainable' connection aborts later.
[Bodo Moeller; problem tracked down by Lutz Jaenicke]
*) Major EVP API cipher revision.
Add hooks for extra EVP features. This allows various cipher
parameters to be set in the EVP interface. Support added for variable
key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
setting of RC2 and RC5 parameters.
Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
ciphers.
Remove lots of duplicated code from the EVP library. For example *every*
cipher init() function handles the 'iv' in the same way according to the
cipher mode. They also all do nothing if the 'key' parameter is NULL and
for CFB and OFB modes they zero ctx->num.
New functionality allows removal of S/MIME code RC2 hack.
Most of the routines have the same form and so can be declared in terms
of macros.
By shifting this to the top level EVP_CipherInit() it can be removed from
all individual ciphers. If the cipher wants to handle IVs or keys
differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
flags.
Change lots of functions like EVP_EncryptUpdate() to now return a
value: although software versions of the algorithms cannot fail
any installed hardware versions can.
[Steve Henson]
*) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
this option is set, tolerate broken clients that send the negotiated
protocol version number instead of the requested protocol version
number.
[Bodo Moeller]
*) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
i.e. non-zero for export ciphersuites, zero otherwise.
Previous versions had this flag inverted, inconsistent with
rsa_tmp_cb (..._TMP_RSA_CB).
[Bodo Moeller; problem reported by Amit Chopra]
*) Add missing DSA library text string. Work around for some IIS
key files with invalid SEQUENCE encoding.
[Steve Henson]
*) Add a document (doc/standards.txt) that list all kinds of standards
and so on that are implemented in OpenSSL.
[Richard Levitte]
*) Enhance c_rehash script. Old version would mishandle certificates
with the same subject name hash and wouldn't handle CRLs at all.
Added -fingerprint option to crl utility, to support new c_rehash
features.
[Steve Henson]
*) Eliminate non-ANSI declarations in crypto.h and stack.h.
[Ulf M�ller]
*) Fix for SSL server purpose checking. Server checking was
rejecting certificates which had extended key usage present
but no ssl client purpose.
[Steve Henson, reported by Rene Grosser <[email protected]>]
*) Make PKCS#12 code work with no password. The PKCS#12 spec
is a little unclear about how a blank password is handled.
Since the password in encoded as a BMPString with terminating
double NULL a zero length password would end up as just the
double NULL. However no password at all is different and is
handled differently in the PKCS#12 key generation code. NS
treats a blank password as zero length. MSIE treats it as no
password on export: but it will try both on import. We now do
the same: PKCS12_parse() tries zero length and no password if
the password is set to "" or NULL (NULL is now a valid password:
it wasn't before) as does the pkcs12 application.
[Steve Henson]
*) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
perror when PEM_read_bio_X509_REQ fails, the error message must
be obtained from the error queue.
[Bodo Moeller]
*) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
it in ERR_remove_state if appropriate, and change ERR_get_state
accordingly to avoid race conditions (this is necessary because
thread_hash is no longer constant once set).
[Bodo Moeller]
*) Bugfix for linux-elf makefile.one.
[Ulf M�ller]
*) RSA_get_default_method() will now cause a default
RSA_METHOD to be chosen if one doesn't exist already.
Previously this was only set during a call to RSA_new()
or RSA_new_method(NULL) meaning it was possible for
RSA_get_default_method() to return NULL.
[Geoff Thorpe]
*) Added native name translation to the existing DSO code
that will convert (if the flag to do so is set) filenames
that are sufficiently small and have no path information
into a canonical native form. Eg. "blah" converted to
"libblah.so" or "blah.dll" etc.
[Geoff Thorpe]
*) New function ERR_error_string_n(e, buf, len) which is like
ERR_error_string(e, buf), but writes at most 'len' bytes
including the 0 terminator. For ERR_error_string_n, 'buf'
may not be NULL.
[Damien Miller <[email protected]>, Bodo Moeller]
*) CONF library reworked to become more general. A new CONF
configuration file reader "class" is implemented as well as a
new functions (NCONF_*, for "New CONF") to handle it. The now
old CONF_* functions are still there, but are reimplemented to
work in terms of the new functions. Also, a set of functions
to handle the internal storage of the configuration data is
provided to make it easier to write new configuration file
reader "classes" (I can definitely see something reading a
configuration file in XML format, for example), called _CONF_*,
or "the configuration storage API"...
The new configuration file reading functions are:
NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
NCONF_get_section, NCONF_get_string, NCONF_get_numbre
NCONF_default, NCONF_WIN32
NCONF_dump_fp, NCONF_dump_bio
NCONF_default and NCONF_WIN32 are method (or "class") choosers,
NCONF_new creates a new CONF object. This works in the same way
as other interfaces in OpenSSL, like the BIO interface.
NCONF_dump_* dump the internal storage of the configuration file,
which is useful for debugging. All other functions take the same
arguments as the old CONF_* functions wth the exception of the
first that must be a `CONF *' instead of a `LHASH *'.
To make it easer to use the new classes with the old CONF_* functions,
the function CONF_set_default_method is provided.
[Richard Levitte]
*) Add '-tls1' option to 'openssl ciphers', which was already
mentioned in the documentation but had not been implemented.
(This option is not yet really useful because even the additional
experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
[Bodo Moeller]
*) Initial DSO code added into libcrypto for letting OpenSSL (and
OpenSSL-based applications) load shared libraries and bind to
them in a portable way.
[Geoff Thorpe, with contributions from Richard Levitte]
Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
*) Make sure _lrotl and _lrotr are only used with MSVC.
*) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
(the default implementation of RAND_status).
*) Rename openssl x509 option '-crlext', which was added in 0.9.5,
to '-clrext' (= clear extensions), as intended and documented.
[Bodo Moeller; inconsistency pointed out by Michael Attili
<[email protected]>]
*) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
was larger than the MD block size.
[Steve Henson, pointed out by Yost William <[email protected]>]
*) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
using the passed key: if the passed key was a private key the result
of X509_print(), for example, would be to print out all the private key
components.
[Steve Henson]
*) des_quad_cksum() byte order bug fix.
[Ulf M�ller, using the problem description in krb4-0.9.7, where
the solution is attributed to Derrick J Brashear <[email protected]>]
*) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
discouraged.
[Steve Henson, pointed out by Brian Korver <[email protected]>]
*) For easily testing in shell scripts whether some command
'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
returns with exit code 0 iff no command of the given name is available.
'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
the output goes to stdout and nothing is printed to stderr.
Additional arguments are always ignored.
Since for each cipher there is a command of the same name,
the 'no-cipher' compilation switches can be tested this way.
('openssl no-XXX' is not able to detect pseudo-commands such
as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
[Bodo Moeller]
*) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
[Bodo Moeller]
*) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
is set; it will be thrown away anyway because each handshake creates
its own key.
ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
to parameters -- in previous versions (since OpenSSL 0.9.3) the
'default key' from SSL_CTX_set_tmp_dh would always be lost, meanining
you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
[Bodo Moeller]
*) New s_client option -ign_eof: EOF at stdin is ignored, and
'Q' and 'R' lose their special meanings (quit/renegotiate).
This is part of what -quiet does; unlike -quiet, -ign_eof
does not suppress any output.
[Richard Levitte]
*) Add compatibility options to the purpose and trust code. The
purpose X509_PURPOSE_ANY is "any purpose" which automatically
accepts a certificate or CA, this was the previous behaviour,
with all the associated security issues.
X509_TRUST_COMPAT is the old trust behaviour: only and
automatically trust self signed roots in certificate store. A
new trust setting X509_TRUST_DEFAULT is used to specify that
a purpose has no associated trust setting and it should instead
use the value in the default purpose.
[Steve Henson]
*) Fix the PKCS#8 DSA private key code so it decodes keys again
and fix a memory leak.
[Steve Henson]
*) In util/mkerr.pl (which implements 'make errors'), preserve
reason strings from the previous version of the .c file, as
the default to have only downcase letters (and digits) in
automatically generated reasons codes is not always appropriate.
[Bodo Moeller]
*) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
using strerror. Previously, ERR_reason_error_string() returned
library names as reason strings for SYSerr; but SYSerr is a special
case where small numbers are errno values, not library numbers.
[Bodo Moeller]
*) Add '-dsaparam' option to 'openssl dhparam' application. This
converts DSA parameters into DH parameters. (When creating parameters,
DSA_generate_parameters is used.)
[Bodo Moeller]
*) Include 'length' (recommended exponent length) in C code generated
by 'openssl dhparam -C'.
[Bodo Moeller]
*) The second argument to set_label in perlasm was already being used
so couldn't be used as a "file scope" flag. Moved to third argument
which was free.
[Steve Henson]
*) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
instead of RAND_bytes for encryption IVs and salts.
[Bodo Moeller]
*) Include RAND_status() into RAND_METHOD instead of implementing
it only for md_rand.c Otherwise replacing the PRNG by calling
RAND_set_rand_method would be impossible.
[Bodo Moeller]
*) Don't let DSA_generate_key() enter an infinite loop if the random
number generation fails.
[Bodo Moeller]
*) New 'rand' application for creating pseudo-random output.
[Bodo Moeller]
*) Added configuration support for Linux/IA64
[Rolf Haberrecker <[email protected]>]
*) Assembler module support for Mingw32.
[Ulf M�ller]
*) Shared library support for HPUX (in shlib/).
[Lutz Jaenicke <[email protected]> and Anonymous]
*) Shared library support for Solaris gcc.
[Lutz Behnke <[email protected]>]
Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
*) PKCS7_encrypt() was adding text MIME headers twice because they
were added manually and by SMIME_crlf_copy().
[Steve Henson]
*) In bntest.c don't call BN_rand with zero bits argument.
[Steve Henson, pointed out by Andrew W. Gray <[email protected]>]
*) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
case was implemented. This caused BN_div_recp() to fail occasionally.
[Ulf M�ller]
*) Add an optional second argument to the set_label() in the perl
assembly language builder. If this argument exists and is set
to 1 it signals that the assembler should use a symbol whose
scope is the entire file, not just the current function. This
is needed with MASM which uses the format label:: for this scope.
[Steve Henson, pointed out by Peter Runestig <[email protected]>]
*) Change the ASN1 types so they are typedefs by default. Before
almost all types were #define'd to ASN1_STRING which was causing
STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
for example.
[Steve Henson]
*) Change names of new functions to the new get1/get0 naming
convention: After 'get1', the caller owns a reference count
and has to call ..._free; 'get0' returns a pointer to some
data structure without incrementing reference counters.
(Some of the existing 'get' functions increment a reference
counter, some don't.)
Similarly, 'set1' and 'add1' functions increase reference
counters or duplicate objects.
[Steve Henson]
*) Allow for the possibility of temp RSA key generation failure:
the code used to assume it always worked and crashed on failure.
[Steve Henson]
*) Fix potential buffer overrun problem in BIO_printf().
[Ulf M�ller, using public domain code by Patrick Powell; problem
pointed out by David Sacerdote <[email protected]>]
*) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
RAND_egd() and RAND_status(). In the command line application,
the EGD socket can be specified like a seed file using RANDFILE
or -rand.
[Ulf M�ller]
*) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
Some CAs (e.g. Verisign) distribute certificates in this form.
[Steve Henson]
*) Remove the SSL_ALLOW_ADH compile option and set the default cipher
list to exclude them. This means that no special compilation option
is needed to use anonymous DH: it just needs to be included in the
cipher list.
[Steve Henson]
*) Change the EVP_MD_CTX_type macro so its meaning consistent with
EVP_MD_type. The old functionality is available in a new macro called
EVP_MD_md(). Change code that uses it and update docs.
[Steve Henson]
*) ..._ctrl functions now have corresponding ..._callback_ctrl functions
where the 'void *' argument is replaced by a function pointer argument.
Previously 'void *' was abused to point to functions, which works on
many platforms, but is not correct. As these functions are usually
called by macros defined in OpenSSL header files, most source code
should work without changes.
[Richard Levitte]
*) <openssl/opensslconf.h> (which is created by Configure) now contains
sections with information on -D... compiler switches used for
compiling the library so that applications can see them. To enable
one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
must be defined. E.g.,
#define OPENSSL_ALGORITHM_DEFINES
#include <openssl/opensslconf.h>
defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
[Richard Levitte, Ulf and Bodo M�ller]
*) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
record layer.
[Bodo Moeller]
*) Change the 'other' type in certificate aux info to a STACK_OF
X509_ALGOR. Although not an AlgorithmIdentifier as such it has
the required ASN1 format: arbitrary types determined by an OID.
[Steve Henson]
*) Add some PEM_write_X509_REQ_NEW() functions and a command line
argument to 'req'. This is not because the function is newer or
better than others it just uses the work 'NEW' in the certificate
request header lines. Some software needs this.
[Steve Henson]
*) Reorganise password command line arguments: now passwords can be
obtained from various sources. Delete the PEM_cb function and make
it the default behaviour: i.e. if the callback is NULL and the
usrdata argument is not NULL interpret it as a null terminated pass
phrase. If usrdata and the callback are NULL then the pass phrase
is prompted for as usual.
[Steve Henson]
*) Add support for the Compaq Atalla crypto accelerator. If it is installed,
the support is automatically enabled. The resulting binaries will
autodetect the card and use it if present.
[Ben Laurie and Compaq Inc.]
*) Work around for Netscape hang bug. This sends certificate request
and server done in one record. Since this is perfectly legal in the
SSL/TLS protocol it isn't a "bug" option and is on by default. See
the bugs/SSLv3 entry for more info.
[Steve Henson]
*) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
[Andy Polyakov]
*) Add -rand argument to smime and pkcs12 applications and read/write
of seed file.
[Steve Henson]
*) New 'passwd' tool for crypt(3) and apr1 password hashes.
[Bodo Moeller]
*) Add command line password options to the remaining applications.
[Steve Henson]
*) Bug fix for BN_div_recp() for numerators with an even number of
bits.
[Ulf M�ller]
*) More tests in bntest.c, and changed test_bn output.
[Ulf M�ller]
*) ./config recognizes MacOS X now.
[Andy Polyakov]
*) Bug fix for BN_div() when the first words of num and divsor are
equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
[Ulf M�ller]
*) Add support for various broken PKCS#8 formats, and command line
options to produce them.
[Steve Henson]
*) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
get temporary BIGNUMs from a BN_CTX.
[Ulf M�ller]
*) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
for p == 0.
[Ulf M�ller]
*) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
include a #define from the old name to the new. The original intent
was that statically linked binaries could for example just call
SSLeay_add_all_ciphers() to just add ciphers to the table and not
link with digests. This never worked becayse SSLeay_add_all_digests()
and SSLeay_add_all_ciphers() were in the same source file so calling
one would link with the other. They are now in separate source files.
[Steve Henson]
*) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
[Steve Henson]
*) Use a less unusual form of the Miller-Rabin primality test (it used
a binary algorithm for exponentiation integrated into the Miller-Rabin
loop, our standard modexp algorithms are faster).
[Bodo Moeller]
*) Support for the EBCDIC character set completed.
[Martin Kraemer <[email protected]>]
*) Source code cleanups: use const where appropriate, eliminate casts,
use void * instead of char * in lhash.
[Ulf M�ller]
*) Bugfix: ssl3_send_server_key_exchange was not restartable
(the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
this the server could overwrite ephemeral keys that the client
has already seen).
[Bodo Moeller]
*) Turn DSA_is_prime into a macro that calls BN_is_prime,
using 50 iterations of the Rabin-Miller test.
DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
iterations of the Rabin-Miller test as required by the appendix
to FIPS PUB 186[-1]) instead of DSA_is_prime.
As BN_is_prime_fasttest includes trial division, DSA parameter
generation becomes much faster.
This implies a change for the callback functions in DSA_is_prime
and DSA_generate_parameters: The callback function is called once
for each positive witness in the Rabin-Miller test, not just
occasionally in the inner loop; and the parameters to the
callback function now provide an iteration count for the outer
loop rather than for the current invocation of the inner loop.
DSA_generate_parameters additionally can call the callback
function with an 'iteration count' of -1, meaning that a
candidate has passed the trial division test (when q is generated
from an application-provided seed, trial division is skipped).
[Bodo Moeller]
*) New function BN_is_prime_fasttest that optionally does trial
division before starting the Rabin-Miller test and has
an additional BN_CTX * argument (whereas BN_is_prime always
has to allocate at least one BN_CTX).
'callback(1, -1, cb_arg)' is called when a number has passed the
trial division stage.
[Bodo Moeller]
*) Fix for bug in CRL encoding. The validity dates weren't being handled
as ASN1_TIME.
[Steve Henson]
*) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
[Steve Henson]
*) New function BN_pseudo_rand().
[Ulf M�ller]
*) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
bignum version of BN_from_montgomery() with the working code from
SSLeay 0.9.0 (the word based version is faster anyway), and clean up
the comments.
[Ulf M�ller]
*) Avoid a race condition in s2_clnt.c (function get_server_hello) that
made it impossible to use the same SSL_SESSION data structure in
SSL2 clients in multiple threads.
[Bodo Moeller]
*) The return value of RAND_load_file() no longer counts bytes obtained
by stat(). RAND_load_file(..., -1) is new and uses the complete file
to seed the PRNG (previously an explicit byte count was required).
[Ulf M�ller, Bodo M�ller]
*) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
used (char *) instead of (void *) and had casts all over the place.
[Steve Henson]
*) Make BN_generate_prime() return NULL on error if ret!=NULL.
[Ulf M�ller]
*) Retain source code compatibility for BN_prime_checks macro:
BN_is_prime(..., BN_prime_checks, ...) now uses
BN_prime_checks_for_size to determine the appropriate number of
Rabin-Miller iterations.
[Ulf M�ller]
*) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
DH_CHECK_P_NOT_SAFE_PRIME.
(Check if this is true? OpenPGP calls them "strong".)
[Ulf M�ller]
*) Merge the functionality of "dh" and "gendh" programs into a new program
"dhparam". The old programs are retained for now but will handle DH keys
(instead of parameters) in future.
[Steve Henson]
*) Make the ciphers, s_server and s_client programs check the return values
when a new cipher list is set.
[Steve Henson]
*) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
ciphers. Before when the 56bit ciphers were enabled the sorting was
wrong.
The syntax for the cipher sorting has been extended to support sorting by
cipher-strength (using the strength_bits hard coded in the tables).
The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
Fix a bug in the cipher-command parser: when supplying a cipher command
string with an "undefined" symbol (neither command nor alphanumeric
[A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
an error is flagged.
Due to the strength-sorting extension, the code of the
ssl_create_cipher_list() function was completely rearranged. I hope that
the readability was also increased :-)
[Lutz Jaenicke <[email protected]>]
*) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
for the first serial number and places 2 in the serial number file. This
avoids problems when the root CA is created with serial number zero and
the first user certificate has the same issuer name and serial number
as the root CA.
[Steve Henson]
*) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
the new code. Add documentation for this stuff.
[Steve Henson]
*) Changes to X509_ATTRIBUTE utilities. These have been renamed from
X509_*() to X509at_*() on the grounds that they don't handle X509
structures and behave in an analagous way to the X509v3 functions:
they shouldn't be called directly but wrapper functions should be used
instead.
So we also now have some wrapper functions that call the X509at functions
when passed certificate requests. (TO DO: similar things can be done with
PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
things. Some of these need some d2i or i2d and print functionality
because they handle more complex structures.)
[Steve Henson]
*) Add missing #ifndefs that caused missing symbols when building libssl
as a shared library without RSA. Use #ifndef NO_SSL2 instead of
NO_RSA in ssl/s2*.c.
[Kris Kennaway <[email protected]>, modified by Ulf M�ller]
*) Precautions against using the PRNG uninitialized: RAND_bytes() now
has a return value which indicates the quality of the random data
(1 = ok, 0 = not seeded). Also an error is recorded on the thread's
error queue. New function RAND_pseudo_bytes() generates output that is
guaranteed to be unique but not unpredictable. RAND_add is like
RAND_seed, but takes an extra argument for an entropy estimate
(RAND_seed always assumes full entropy).
[Ulf M�ller]
*) Do more iterations of Rabin-Miller probable prime test (specifically,
3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
instead of only 2 for all lengths; see BN_prime_checks_for_size definition
in crypto/bn/bn_prime.c for the complete table). This guarantees a
false-positive rate of at most 2^-80 for random input.
[Bodo Moeller]
*) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
[Bodo Moeller]
*) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
in the 0.9.5 release), this returns the chain
from an X509_CTX structure with a dup of the stack and all
the X509 reference counts upped: so the stack will exist
after X509_CTX_cleanup() has been called. Modify pkcs12.c
to use this.
Also make SSL_SESSION_print() print out the verify return
code.
[Steve Henson]
*) Add manpage for the pkcs12 command. Also change the default
behaviour so MAC iteration counts are used unless the new
-nomaciter option is used. This improves file security and
only older versions of MSIE (4.0 for example) need it.
[Steve Henson]
*) Honor the no-xxx Configure options when creating .DEF files.
[Ulf M�ller]
*) Add PKCS#10 attributes to field table: challengePassword,
unstructuredName and unstructuredAddress. These are taken from
draft PKCS#9 v2.0 but are compatible with v1.2 provided no
international characters are used.
More changes to X509_ATTRIBUTE code: allow the setting of types
based on strings. Remove the 'loc' parameter when adding
attributes because these will be a SET OF encoding which is sorted
in ASN1 order.
[Steve Henson]
*) Initial changes to the 'req' utility to allow request generation
automation. This will allow an application to just generate a template
file containing all the field values and have req construct the
request.
Initial support for X509_ATTRIBUTE handling. Stacks of these are
used all over the place including certificate requests and PKCS#7
structures. They are currently handled manually where necessary with
some primitive wrappers for PKCS#7. The new functions behave in a
manner analogous to the X509 extension functions: they allow
attributes to be looked up by NID and added.
Later something similar to the X509V3 code would be desirable to
automatically handle the encoding, decoding and printing of the
more complex types. The string types like challengePassword can
be handled by the string table functions.
Also modified the multi byte string table handling. Now there is
a 'global mask' which masks out certain types. The table itself
can use the flag STABLE_NO_MASK to ignore the mask setting: this
is useful when for example there is only one permissible type
(as in countryName) and using the mask might result in no valid
types at all.
[Steve Henson]
*) Clean up 'Finished' handling, and add functions SSL_get_finished and
SSL_get_peer_finished to allow applications to obtain the latest
Finished messages sent to the peer or expected from the peer,
respectively. (SSL_get_peer_finished is usually the Finished message
actually received from the peer, otherwise the protocol will be aborted.)
As the Finished message are message digests of the complete handshake
(with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
be used for external authentication procedures when the authentication
provided by SSL/TLS is not desired or is not enough.
[Bodo Moeller]
*) Enhanced support for Alpha Linux is added. Now ./config checks if
the host supports BWX extension and if Compaq C is present on the
$PATH. Just exploiting of the BWX extension results in 20-30%
performance kick for some algorithms, e.g. DES and RC4 to mention
a couple. Compaq C in turn generates ~20% faster code for MD5 and
SHA1.
[Andy Polyakov]
*) Add support for MS "fast SGC". This is arguably a violation of the
SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
weak crypto and after checking the certificate is SGC a second one
with strong crypto. MS SGC stops the first handshake after receiving
the server certificate message and sends a second client hello. Since
a server will typically do all the time consuming operations before
expecting any further messages from the client (server key exchange
is the most expensive) there is little difference between the two.
To get OpenSSL to support MS SGC we have to permit a second client
hello message after we have sent server done. In addition we have to
reset the MAC if we do get this second client hello.
[Steve Henson]
*) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
if a DER encoded private key is RSA or DSA traditional format. Changed
d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
format DER encoded private key. Newer code should use PKCS#8 format which
has the key type encoded in the ASN1 structure. Added DER private key
support to pkcs8 application.
[Steve Henson]
*) SSL 3/TLS 1 servers now don't request certificates when an anonymous
ciphersuites has been selected (as required by the SSL 3/TLS 1
specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
is set, we interpret this as a request to violate the specification
(the worst that can happen is a handshake failure, and 'correct'
behaviour would result in a handshake failure anyway).
[Bodo Moeller]
*) In SSL_CTX_add_session, take into account that there might be multiple
SSL_SESSION structures with the same session ID (e.g. when two threads
concurrently obtain them from an external cache).
The internal cache can handle only one SSL_SESSION with a given ID,
so if there's a conflict, we now throw out the old one to achieve
consistency.
[Bodo Moeller]
*) Add OIDs for idea and blowfish in CBC mode. This will allow both
to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
some routines that use cipher OIDs: some ciphers do not have OIDs
defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
example.
[Steve Henson]
*) Simplify the trust setting structure and code. Now we just have
two sequences of OIDs for trusted and rejected settings. These will
typically have values the same as the extended key usage extension
and any application specific purposes.
The trust checking code now has a default behaviour: it will just
check for an object with the same NID as the passed id. Functions can
be provided to override either the default behaviour or the behaviour
for a given id. SSL client, server and email already have functions
in place for compatibility: they check the NID and also return "trusted"
if the certificate is self signed.
[Steve Henson]
*) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
traditional format into an EVP_PKEY structure.
[Steve Henson]
*) Add a password callback function PEM_cb() which either prompts for
a password if usr_data is NULL or otherwise assumes it is a null
terminated password. Allow passwords to be passed on command line
environment or config files in a few more utilities.
[Steve Henson]
*) Add a bunch of DER and PEM functions to handle PKCS#8 format private
keys. Add some short names for PKCS#8 PBE algorithms and allow them
to be specified on the command line for the pkcs8 and pkcs12 utilities.
Update documentation.
[Steve Henson]
*) Support for ASN1 "NULL" type. This could be handled before by using
ASN1_TYPE but there wasn't any function that would try to read a NULL
and produce an error if it couldn't. For compatibility we also have
ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
don't allocate anything because they don't need to.
[Steve Henson]
*) Initial support for MacOS is now provided. Examine INSTALL.MacOS
for details.
[Andy Polyakov, Roy Woods <[email protected]>]
*) Rebuild of the memory allocation routines used by OpenSSL code and
possibly others as well. The purpose is to make an interface that
provide hooks so anyone can build a separate set of allocation and
deallocation routines to be used by OpenSSL, for example memory
pool implementations, or something else, which was previously hard
since Malloc(), Realloc() and Free() were defined as macros having
the values malloc, realloc and free, respectively (except for Win32
compilations). The same is provided for memory debugging code.
OpenSSL already comes with functionality to find memory leaks, but
this gives people a chance to debug other memory problems.
With these changes, a new set of functions and macros have appeared:
CRYPTO_set_mem_debug_functions() [F]
CRYPTO_get_mem_debug_functions() [F]
CRYPTO_dbg_set_options() [F]
CRYPTO_dbg_get_options() [F]
CRYPTO_malloc_debug_init() [M]
The memory debug functions are NULL by default, unless the library
is compiled with CRYPTO_MDEBUG or friends is defined. If someone
wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
gives the standard debugging functions that come with OpenSSL) or
CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
provided by the library user) must be used. When the standard
debugging functions are used, CRYPTO_dbg_set_options can be used to
request additional information:
CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
the CRYPTO_MDEBUG_xxx macro when compiling the library.
Also, things like CRYPTO_set_mem_functions will always give the
expected result (the new set of functions is used for allocation
and deallocation) at all times, regardless of platform and compiler
options.
To finish it up, some functions that were never use in any other
way than through macros have a new API and new semantic:
CRYPTO_dbg_malloc()
CRYPTO_dbg_realloc()
CRYPTO_dbg_free()
All macros of value have retained their old syntax.
[Richard Levitte and Bodo Moeller]
*) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
ordering of SMIMECapabilities wasn't in "strength order" and there
was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
algorithm.
[Steve Henson]
*) Some ASN1 types with illegal zero length encoding (INTEGER,
ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
[Frans Heymans <[email protected]>, modified by Steve Henson]
*) Merge in my S/MIME library for OpenSSL. This provides a simple
S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
functionality to handle multipart/signed properly) and a utility
called 'smime' to call all this stuff. This is based on code I
originally wrote for Celo who have kindly allowed it to be
included in OpenSSL.
[Steve Henson]
*) Add variants des_set_key_checked and des_set_key_unchecked of
des_set_key (aka des_key_sched). Global variable des_check_key
decides which of these is called by des_set_key; this way
des_check_key behaves as it always did, but applications and
the library itself, which was buggy for des_check_key == 1,
have a cleaner way to pick the version they need.
[Bodo Moeller]
*) New function PKCS12_newpass() which changes the password of a
PKCS12 structure.
[Steve Henson]
*) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
dynamic mix. In both cases the ids can be used as an index into the
table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
functions so they accept a list of the field values and the
application doesn't need to directly manipulate the X509_TRUST
structure.
[Steve Henson]
*) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
need initialising.
[Steve Henson]
*) Modify the way the V3 extension code looks up extensions. This now
works in a similar way to the object code: we have some "standard"
extensions in a static table which is searched with OBJ_bsearch()
and the application can add dynamic ones if needed. The file
crypto/x509v3/ext_dat.h now has the info: this file needs to be
updated whenever a new extension is added to the core code and kept
in ext_nid order. There is a simple program 'tabtest.c' which checks
this. New extensions are not added too often so this file can readily
be maintained manually.
There are two big advantages in doing things this way. The extensions
can be looked up immediately and no longer need to be "added" using
X509V3_add_standard_extensions(): this function now does nothing.
[Side note: I get *lots* of email saying the extension code doesn't
work because people forget to call this function]
Also no dynamic allocation is done unless new extensions are added:
so if we don't add custom extensions there is no need to call
X509V3_EXT_cleanup().
[Steve Henson]
*) Modify enc utility's salting as follows: make salting the default. Add a
magic header, so unsalted files fail gracefully instead of just decrypting
to garbage. This is because not salting is a big security hole, so people
should be discouraged from doing it.
[Ben Laurie]
*) Fixes and enhancements to the 'x509' utility. It allowed a message
digest to be passed on the command line but it only used this
parameter when signing a certificate. Modified so all relevant
operations are affected by the digest parameter including the
-fingerprint and -x509toreq options. Also -x509toreq choked if a
DSA key was used because it didn't fix the digest.
[Steve Henson]
*) Initial certificate chain verify code. Currently tests the untrusted
certificates for consistency with the verify purpose (which is set
when the X509_STORE_CTX structure is set up) and checks the pathlength.
There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
this is because it will reject chains with invalid extensions whereas
every previous version of OpenSSL and SSLeay made no checks at all.
Trust code: checks the root CA for the relevant trust settings. Trust
settings have an initial value consistent with the verify purpose: e.g.
if the verify purpose is for SSL client use it expects the CA to be
trusted for SSL client use. However the default value can be changed to
permit custom trust settings: one example of this would be to only trust
certificates from a specific "secure" set of CAs.
Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
which should be used for version portability: especially since the
verify structure is likely to change more often now.
SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
to set them. If not set then assume SSL clients will verify SSL servers
and vice versa.
Two new options to the verify program: -untrusted allows a set of
untrusted certificates to be passed in and -purpose which sets the
intended purpose of the certificate. If a purpose is set then the
new chain verify code is used to check extension consistency.
[Steve Henson]
*) Support for the authority information access extension.
[Steve Henson]
*) Modify RSA and DSA PEM read routines to transparently handle
PKCS#8 format private keys. New *_PUBKEY_* functions that handle
public keys in a format compatible with certificate
SubjectPublicKeyInfo structures. Unfortunately there were already
functions called *_PublicKey_* which used various odd formats so
these are retained for compatibility: however the DSA variants were
never in a public release so they have been deleted. Changed dsa/rsa
utilities to handle the new format: note no releases ever handled public
keys so we should be OK.
The primary motivation for this change is to avoid the same fiasco
that dogs private keys: there are several incompatible private key
formats some of which are standard and some OpenSSL specific and
require various evil hacks to allow partial transparent handling and
even then it doesn't work with DER formats. Given the option anything
other than PKCS#8 should be dumped: but the other formats have to
stay in the name of compatibility.
With public keys and the benefit of hindsight one standard format
is used which works with EVP_PKEY, RSA or DSA structures: though
it clearly returns an error if you try to read the wrong kind of key.
Added a -pubkey option to the 'x509' utility to output the public key.
Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
(renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
that do the same as the EVP_PKEY_assign_*() except they up the
reference count of the added key (they don't "swallow" the
supplied key).
[Steve Henson]
*) Fixes to crypto/x509/by_file.c the code to read in certificates and
CRLs would fail if the file contained no certificates or no CRLs:
added a new function to read in both types and return the number
read: this means that if none are read it will be an error. The
DER versions of the certificate and CRL reader would always fail
because it isn't possible to mix certificates and CRLs in DER format
without choking one or the other routine. Changed this to just read
a certificate: this is the best we can do. Also modified the code
in apps/verify.c to take notice of return codes: it was previously
attempting to read in certificates from NULL pointers and ignoring
any errors: this is one reason why the cert and CRL reader seemed
to work. It doesn't check return codes from the default certificate
routines: these may well fail if the certificates aren't installed.
[Steve Henson]
*) Code to support otherName option in GeneralName.
[Steve Henson]
*) First update to verify code. Change the verify utility
so it warns if it is passed a self signed certificate:
for consistency with the normal behaviour. X509_verify
has been modified to it will now verify a self signed
certificate if *exactly* the same certificate appears
in the store: it was previously impossible to trust a
single self signed certificate. This means that:
openssl verify ss.pem
now gives a warning about a self signed certificate but
openssl verify -CAfile ss.pem ss.pem
is OK.
[Steve Henson]
*) For servers, store verify_result in SSL_SESSION data structure
(and add it to external session representation).
This is needed when client certificate verifications fails,
but an application-provided verification callback (set by
SSL_CTX_set_cert_verify_callback) allows accepting the session
anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
but returns 1): When the session is reused, we have to set
ssl->verify_result to the appropriate error code to avoid
security holes.
[Bodo Moeller, problem pointed out by Lutz Jaenicke]
*) Fix a bug in the new PKCS#7 code: it didn't consider the
case in PKCS7_dataInit() where the signed PKCS7 structure
didn't contain any existing data because it was being created.
[Po-Cheng Chen <[email protected]>, slightly modified by Steve Henson]
*) Add a salt to the key derivation routines in enc.c. This
forms the first 8 bytes of the encrypted file. Also add a
-S option to allow a salt to be input on the command line.
[Steve Henson]
*) New function X509_cmp(). Oddly enough there wasn't a function
to compare two certificates. We do this by working out the SHA1
hash and comparing that. X509_cmp() will be needed by the trust
code.
[Steve Henson]
*) SSL_get1_session() is like SSL_get_session(), but increments
the reference count in the SSL_SESSION returned.
[Geoff Thorpe <[email protected]>]
*) Fix for 'req': it was adding a null to request attributes.
Also change the X509_LOOKUP and X509_INFO code to handle
certificate auxiliary information.
[Steve Henson]
*) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
the 'enc' command.
[Steve Henson]
*) Add the possibility to add extra information to the memory leak
detecting output, to form tracebacks, showing from where each
allocation was originated: CRYPTO_push_info("constant string") adds
the string plus current file name and line number to a per-thread
stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
is like calling CYRPTO_pop_info() until the stack is empty.
Also updated memory leak detection code to be multi-thread-safe.
[Richard Levitte]
*) Add options -text and -noout to pkcs7 utility and delete the
encryption options which never did anything. Update docs.
[Steve Henson]
*) Add options to some of the utilities to allow the pass phrase
to be included on either the command line (not recommended on
OSes like Unix) or read from the environment. Update the
manpages and fix a few bugs.
[Steve Henson]
*) Add a few manpages for some of the openssl commands.
[Steve Henson]
*) Fix the -revoke option in ca. It was freeing up memory twice,
leaking and not finding already revoked certificates.
[Steve Henson]
*) Extensive changes to support certificate auxiliary information.
This involves the use of X509_CERT_AUX structure and X509_AUX
functions. An X509_AUX function such as PEM_read_X509_AUX()
can still read in a certificate file in the usual way but it
will also read in any additional "auxiliary information". By
doing things this way a fair degree of compatibility can be
retained: existing certificates can have this information added
using the new 'x509' options.
Current auxiliary information includes an "alias" and some trust
settings. The trust settings will ultimately be used in enhanced
certificate chain verification routines: currently a certificate
can only be trusted if it is self signed and then it is trusted
for all purposes.
[Steve Henson]
*) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
The problem was that one of the replacement routines had not been working
since SSLeay releases. For now the offending routine has been replaced
with non-optimised assembler. Even so, this now gives around 95%
performance improvement for 1024 bit RSA signs.
[Mark Cox]
*) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
handling. Most clients have the effective key size in bits equal to
the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
A few however don't do this and instead use the size of the decrypted key
to determine the RC2 key length and the AlgorithmIdentifier to determine
the effective key length. In this case the effective key length can still
be 40 bits but the key length can be 168 bits for example. This is fixed
by manually forcing an RC2 key into the EVP_PKEY structure because the
EVP code can't currently handle unusual RC2 key sizes: it always assumes
the key length and effective key length are equal.
[Steve Henson]
*) Add a bunch of functions that should simplify the creation of
X509_NAME structures. Now you should be able to do:
X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
and have it automatically work out the correct field type and fill in
the structures. The more adventurous can try:
X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
and it will (hopefully) work out the correct multibyte encoding.
[Steve Henson]
*) Change the 'req' utility to use the new field handling and multibyte
copy routines. Before the DN field creation was handled in an ad hoc
way in req, ca, and x509 which was rather broken and didn't support
BMPStrings or UTF8Strings. Since some software doesn't implement
BMPStrings or UTF8Strings yet, they can be enabled using the config file
using the dirstring_type option. See the new comment in the default
openssl.cnf for more info.
[Steve Henson]
*) Make crypto/rand/md_rand.c more robust:
- Assure unique random numbers after fork().
- Make sure that concurrent threads access the global counter and
md serializably so that we never lose entropy in them
or use exactly the same state in multiple threads.
Access to the large state is not always serializable because
the additional locking could be a performance killer, and
md should be large enough anyway.
[Bodo Moeller]
*) New file apps/app_rand.c with commonly needed functionality
for handling the random seed file.
Use the random seed file in some applications that previously did not:
ca,
dsaparam -genkey (which also ignored its '-rand' option),
s_client,
s_server,
x509 (when signing).
Except on systems with /dev/urandom, it is crucial to have a random
seed file at least for key creation, DSA signing, and for DH exchanges;
for RSA signatures we could do without one.
gendh and gendsa (unlike genrsa) used to read only the first byte
of each file listed in the '-rand' option. The function as previously
found in genrsa is now in app_rand.c and is used by all programs
that support '-rand'.
[Bodo Moeller]
*) In RAND_write_file, use mode 0600 for creating files;
don't just chmod when it may be too late.
[Bodo Moeller]
*) Report an error from X509_STORE_load_locations
when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
[Bill Perry]
*) New function ASN1_mbstring_copy() this copies a string in either
ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
into an ASN1_STRING type. A mask of permissible types is passed
and it chooses the "minimal" type to use or an error if not type
is suitable.
[Steve Henson]
*) Add function equivalents to the various macros in asn1.h. The old
macros are retained with an M_ prefix. Code inside the library can
use the M_ macros. External code (including the openssl utility)
should *NOT* in order to be "shared library friendly".
[Steve Henson]
*) Add various functions that can check a certificate's extensions
to see if it usable for various purposes such as SSL client,
server or S/MIME and CAs of these types. This is currently
VERY EXPERIMENTAL but will ultimately be used for certificate chain
verification. Also added a -purpose flag to x509 utility to
print out all the purposes.
[Steve Henson]
*) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
functions.
[Steve Henson]
*) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
for, obtain and decode and extension and obtain its critical flag.
This allows all the necessary extension code to be handled in a
single function call.
[Steve Henson]
*) RC4 tune-up featuring 30-40% performance improvement on most RISC
platforms. See crypto/rc4/rc4_enc.c for further details.
[Andy Polyakov]
*) New -noout option to asn1parse. This causes no output to be produced
its main use is when combined with -strparse and -out to extract data
from a file (which may not be in ASN.1 format).
[Steve Henson]
*) Fix for pkcs12 program. It was hashing an invalid certificate pointer
when producing the local key id.
[Richard Levitte <[email protected]>]
*) New option -dhparam in s_server. This allows a DH parameter file to be
stated explicitly. If it is not stated then it tries the first server
certificate file. The previous behaviour hard coded the filename
"server.pem".
[Steve Henson]
*) Add -pubin and -pubout options to the rsa and dsa commands. These allow
a public key to be input or output. For example:
openssl rsa -in key.pem -pubout -out pubkey.pem
Also added necessary DSA public key functions to handle this.
[Steve Henson]
*) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
in the message. This was handled by allowing
X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
[Steve Henson, reported by Sampo Kellomaki <[email protected]>]
*) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
to the end of the strings whereas this didn't. This would cause problems
if strings read with d2i_ASN1_bytes() were later modified.
[Steve Henson, reported by Arne Ansper <[email protected]>]
*) Fix for base64 decode bug. When a base64 bio reads only one line of
data and it contains EOF it will end up returning an error. This is
caused by input 46 bytes long. The cause is due to the way base64
BIOs find the start of base64 encoded data. They do this by trying a
trial decode on each line until they find one that works. When they
do a flag is set and it starts again knowing it can pass all the
data directly through the decoder. Unfortunately it doesn't reset
the context it uses. This means that if EOF is reached an attempt
is made to pass two EOFs through the context and this causes the
resulting error. This can also cause other problems as well. As is
usual with these problems it takes *ages* to find and the fix is
trivial: move one line.
[Steve Henson, reported by [email protected] (Ivan Nejgebauer) ]
*) Ugly workaround to get s_client and s_server working under Windows. The
old code wouldn't work because it needed to select() on sockets and the
tty (for keypresses and to see if data could be written). Win32 only
supports select() on sockets so we select() with a 1s timeout on the
sockets and then see if any characters are waiting to be read, if none
are present then we retry, we also assume we can always write data to
the tty. This isn't nice because the code then blocks until we've
received a complete line of data and it is effectively polling the
keyboard at 1s intervals: however it's quite a bit better than not
working at all :-) A dedicated Windows application might handle this
with an event loop for example.
[Steve Henson]
*) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
will be called when RSA_sign() and RSA_verify() are used. This is useful
if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
should *not* be used: RSA_sign() and RSA_verify() must be used instead.
This necessitated the support of an extra signature type NID_md5_sha1
for SSL signatures and modifications to the SSL library to use it instead
of calling RSA_public_decrypt() and RSA_private_encrypt().
[Steve Henson]
*) Add new -verify -CAfile and -CApath options to the crl program, these
will lookup a CRL issuers certificate and verify the signature in a
similar way to the verify program. Tidy up the crl program so it
no longer accesses structures directly. Make the ASN1 CRL parsing a bit
less strict. It will now permit CRL extensions even if it is not
a V2 CRL: this will allow it to tolerate some broken CRLs.
[Steve Henson]
*) Initialize all non-automatic variables each time one of the openssl
sub-programs is started (this is necessary as they may be started
multiple times from the "OpenSSL>" prompt).
[Lennart Bang, Bodo Moeller]
*) Preliminary compilation option RSA_NULL which disables RSA crypto without
removing all other RSA functionality (this is what NO_RSA does). This
is so (for example) those in the US can disable those operations covered
by the RSA patent while allowing storage and parsing of RSA keys and RSA
key generation.
[Steve Henson]
*) Non-copying interface to BIO pairs.
(still largely untested)
[Bodo Moeller]
*) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
ASCII string. This was handled independently in various places before.
[Steve Henson]
*) New functions UTF8_getc() and UTF8_putc() that parse and generate
UTF8 strings a character at a time.
[Steve Henson]
*) Use client_version from client hello to select the protocol
(s23_srvr.c) and for RSA client key exchange verification
(s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
[Bodo Moeller]
*) Add various utility functions to handle SPKACs, these were previously
handled by poking round in the structure internals. Added new function
NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
print, verify and generate SPKACs. Based on an original idea from
Massimiliano Pala <[email protected]> but extensively modified.
[Steve Henson]
*) RIPEMD160 is operational on all platforms and is back in 'make test'.
[Andy Polyakov]
*) Allow the config file extension section to be overwritten on the
command line. Based on an original idea from Massimiliano Pala
<[email protected]>. The new option is called -extensions
and can be applied to ca, req and x509. Also -reqexts to override
the request extensions in req and -crlexts to override the crl extensions
in ca.
[Steve Henson]
*) Add new feature to the SPKAC handling in ca. Now you can include
the same field multiple times by preceding it by "XXXX." for example:
1.OU="Unit name 1"
2.OU="Unit name 2"
this is the same syntax as used in the req config file.
[Steve Henson]
*) Allow certificate extensions to be added to certificate requests. These
are specified in a 'req_extensions' option of the req section of the
config file. They can be printed out with the -text option to req but
are otherwise ignored at present.
[Steve Henson]
*) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
data read consists of only the final block it would not decrypted because
EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
A misplaced 'break' also meant the decrypted final block might not be
copied until the next read.
[Steve Henson]
*) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
a few extra parameters to the DH structure: these will be useful if
for example we want the value of 'q' or implement X9.42 DH.
[Steve Henson]
*) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
provides hooks that allow the default DSA functions or functions on a
"per key" basis to be replaced. This allows hardware acceleration and
hardware key storage to be handled without major modification to the
library. Also added low level modexp hooks and CRYPTO_EX structure and
associated functions.
[Steve Henson]
*) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
as "read only": it can't be written to and the buffer it points to will
not be freed. Reading from a read only BIO is much more efficient than
a normal memory BIO. This was added because there are several times when
an area of memory needs to be read from a BIO. The previous method was
to create a memory BIO and write the data to it, this results in two
copies of the data and an O(n^2) reading algorithm. There is a new
function BIO_new_mem_buf() which creates a read only memory BIO from
an area of memory. Also modified the PKCS#7 routines to use read only
memory BIOs.
[Steve Henson]
*) Bugfix: ssl23_get_client_hello did not work properly when called in
state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
but a retry condition occured while trying to read the rest.
[Bodo Moeller]
*) The PKCS7_ENC_CONTENT_new() function was setting the content type as
NID_pkcs7_encrypted by default: this was wrong since this should almost
always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
the encrypted data type: this is a more sensible place to put it and it
allows the PKCS#12 code to be tidied up that duplicated this
functionality.
[Steve Henson]
*) Changed obj_dat.pl script so it takes its input and output files on
the command line. This should avoid shell escape redirection problems
under Win32.
[Steve Henson]
*) Initial support for certificate extension requests, these are included
in things like Xenroll certificate requests. Included functions to allow
extensions to be obtained and added.
[Steve Henson]
*) -crlf option to s_client and s_server for sending newlines as
CRLF (as required by many protocols).
[Bodo Moeller]
Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
*) Install libRSAglue.a when OpenSSL is built with RSAref.
[Ralf S. Engelschall]
*) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
[Andrija Antonijevic <[email protected]>]
*) Fix -startdate and -enddate (which was missing) arguments to 'ca'
program.
[Steve Henson]
*) New function DSA_dup_DH, which duplicates DSA parameters/keys as
DH parameters/keys (q is lost during that conversion, but the resulting
DH parameters contain its length).
For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
much faster than DH_generate_parameters (which creates parameters
where p = 2*q + 1), and also the smaller q makes DH computations
much more efficient (160-bit exponentiation instead of 1024-bit
exponentiation); so this provides a convenient way to support DHE
ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
utter importance to use
SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
or
SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
when such DH parameters are used, because otherwise small subgroup
attacks may become possible!
[Bodo Moeller]
*) Avoid memory leak in i2d_DHparams.
[Bodo Moeller]
*) Allow the -k option to be used more than once in the enc program:
this allows the same encrypted message to be read by multiple recipients.
[Steve Henson]
*) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
it will always use the numerical form of the OID, even if it has a short
or long name.
[Steve Henson]
*) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
method only got called if p,q,dmp1,dmq1,iqmp components were present,
otherwise bn_mod_exp was called. In the case of hardware keys for example
no private key components need be present and it might store extra data
in the RSA structure, which cannot be accessed from bn_mod_exp.
By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
private key operations.
[Steve Henson]
*) Added support for SPARC Linux.
[Andy Polyakov]
*) pem_password_cb function type incompatibly changed from
typedef int pem_password_cb(char *buf, int size, int rwflag);
to
....(char *buf, int size, int rwflag, void *userdata);
so that applications can pass data to their callbacks:
The PEM[_ASN1]_{read,write}... functions and macros now take an
additional void * argument, which is just handed through whenever
the password callback is called.
[Damien Miller <[email protected]>; tiny changes by Bodo Moeller]
New function SSL_CTX_set_default_passwd_cb_userdata.
Compatibility note: As many C implementations push function arguments
onto the stack in reverse order, the new library version is likely to
interoperate with programs that have been compiled with the old
pem_password_cb definition (PEM_whatever takes some data that
happens to be on the stack as its last argument, and the callback
just ignores this garbage); but there is no guarantee whatsoever that
this will work.
*) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
(both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
problems not only on Windows, but also on some Unix platforms.
To avoid problematic command lines, these definitions are now in an
auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
[Bodo Moeller]
*) MIPS III/IV assembler module is reimplemented.
[Andy Polyakov]
*) More DES library cleanups: remove references to srand/rand and
delete an unused file.
[Ulf M�ller]
*) Add support for the the free Netwide assembler (NASM) under Win32,
since not many people have MASM (ml) and it can be hard to obtain.
This is currently experimental but it seems to work OK and pass all
the tests. Check out INSTALL.W32 for info.
[Steve Henson]
*) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
without temporary keys kept an extra copy of the server key,
and connections with temporary keys did not free everything in case
of an error.
[Bodo Moeller]
*) New function RSA_check_key and new openssl rsa option -check
for verifying the consistency of RSA keys.
[Ulf Moeller, Bodo Moeller]
*) Various changes to make Win32 compile work:
1. Casts to avoid "loss of data" warnings in p5_crpt2.c
2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
comparison" warnings.
3. Add sk_<TYPE>_sort to DEF file generator and do make update.
[Steve Henson]
*) Add a debugging option to PKCS#5 v2 key generation function: when
you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
derived keys are printed to stderr.
[Steve Henson]
*) Copy the flags in ASN1_STRING_dup().
[Roman E. Pavlov <[email protected]>]
*) The x509 application mishandled signing requests containing DSA
keys when the signing key was also DSA and the parameters didn't match.
It was supposed to omit the parameters when they matched the signing key:
the verifying software was then supposed to automatically use the CA's
parameters if they were absent from the end user certificate.
Omitting parameters is no longer recommended. The test was also
the wrong way round! This was probably due to unusual behaviour in
EVP_cmp_parameters() which returns 1 if the parameters match.
This meant that parameters were omitted when they *didn't* match and
the certificate was useless. Certificates signed with 'ca' didn't have
this bug.
[Steve Henson, reported by Doug Erickson <[email protected]>]
*) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
The interface is as follows:
Applications can use
CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
"off" is now the default.
The library internally uses
CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
to disable memory-checking temporarily.
Some inconsistent states that previously were possible (and were
even the default) are now avoided.
-DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
with each memory chunk allocated; this is occasionally more helpful
than just having a counter.
-DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
-DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
extensions.
[Bodo Moeller]
*) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
which largely parallels "options", but is for changing API behaviour,
whereas "options" are about protocol behaviour.
Initial "mode" flags are:
SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
a single record has been written.
SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
retries use the same buffer location.
(But all of the contents must be
copied!)
[Bodo Moeller]
*) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
worked.
*) Fix problems with no-hmac etc.
[Ulf M�ller, pointed out by Brian Wellington <[email protected]>]
*) New functions RSA_get_default_method(), RSA_set_method() and
RSA_get_method(). These allows replacement of RSA_METHODs without having
to mess around with the internals of an RSA structure.
[Steve Henson]
*) Fix memory leaks in DSA_do_sign and DSA_is_prime.
Also really enable memory leak checks in openssl.c and in some
test programs.
[Chad C. Mulligan, Bodo Moeller]
*) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
up the length of negative integers. This has now been simplified to just
store the length when it is first determined and use it later, rather
than trying to keep track of where data is copied and updating it to
point to the end.
[Steve Henson, reported by Brien Wheeler
<[email protected]>]
*) Add a new function PKCS7_signatureVerify. This allows the verification
of a PKCS#7 signature but with the signing certificate passed to the
function itself. This contrasts with PKCS7_dataVerify which assumes the
certificate is present in the PKCS#7 structure. This isn't always the
case: certificates can be omitted from a PKCS#7 structure and be
distributed by "out of band" means (such as a certificate database).
[Steve Henson]
*) Complete the PEM_* macros with DECLARE_PEM versions to replace the
function prototypes in pem.h, also change util/mkdef.pl to add the
necessary function names.
[Steve Henson]
*) mk1mf.pl (used by Windows builds) did not properly read the
options set by Configure in the top level Makefile, and Configure
was not even able to write more than one option correctly.
Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
[Bodo Moeller]
*) New functions CONF_load_bio() and CONF_load_fp() to allow a config
file to be loaded from a BIO or FILE pointer. The BIO version will
for example allow memory BIOs to contain config info.
[Steve Henson]
*) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
Whoever hopes to achieve shared-library compatibility across versions
must use this, not the compile-time macro.
(Exercise 0.9.4: Which is the minimum library version required by
such programs?)
Note: All this applies only to multi-threaded programs, others don't
need locks.
[Bodo Moeller]
*) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
through a BIO pair triggered the default case, i.e.
SSLerr(...,SSL_R_UNKNOWN_STATE).
[Bodo Moeller]
*) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
can use the SSL library even if none of the specific BIOs is
appropriate.
[Bodo Moeller]
*) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
for the encoded length.
[Jeon KyoungHo <[email protected]>]
*) Add initial documentation of the X509V3 functions.
[Steve Henson]
*) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
PEM_write_bio_PKCS8PrivateKey() that are equivalent to
PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
secure PKCS#8 private key format with a high iteration count.
[Steve Henson]
*) Fix determination of Perl interpreter: A perl or perl5
_directory_ in $PATH was also accepted as the interpreter.
[Ralf S. Engelschall]
*) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
wrong with it but it was very old and did things like calling
PEM_ASN1_read() directly and used MD5 for the hash not to mention some
unusual formatting.
[Steve Henson]
*) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
to use the new extension code.
[Steve Henson]
*) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
with macros. This should make it easier to change their form, add extra
arguments etc. Fix a few PEM prototypes which didn't have cipher as a
constant.
[Steve Henson]
*) Add to configuration table a new entry that can specify an alternative
name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
according to Mark Crispin <[email protected]>.
[Bodo Moeller]
#if 0
*) DES CBC did not update the IV. Weird.
[Ben Laurie]
#else
des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
Changing the behaviour of the former might break existing programs --
where IV updating is needed, des_ncbc_encrypt can be used.
#endif
*) When bntest is run from "make test" it drives bc to check its
calculations, as well as internally checking them. If an internal check
fails, it needs to cause bc to give a non-zero result or make test carries
on without noticing the failure. Fixed.
[Ben Laurie]
*) DES library cleanups.
[Ulf M�ller]
*) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
ciphers. NOTE: although the key derivation function has been verified
against some published test vectors it has not been extensively tested
yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
of v2.0.
[Steve Henson]
*) Instead of "mkdir -p", which is not fully portable, use new
Perl script "util/mkdir-p.pl".
[Bodo Moeller]
*) Rewrite the way password based encryption (PBE) is handled. It used to
assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
the 'parameter' field of the AlgorithmIdentifier is passed to the
underlying key generation function so it must do its own ASN1 parsing.
This has also changed the EVP_PBE_CipherInit() function which now has a
'parameter' argument instead of literal salt and iteration count values
and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
[Steve Henson]
*) Support for PKCS#5 v1.5 compatible password based encryption algorithms
and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
KEY" because this clashed with PKCS#8 unencrypted string. Since this
value was just used as a "magic string" and not used directly its
value doesn't matter.
[Steve Henson]
*) Introduce some semblance of const correctness to BN. Shame C doesn't
support mutable.
[Ben Laurie]
*) "linux-sparc64" configuration (ultrapenguin).
[Ray Miller <[email protected]>]
"linux-sparc" configuration.
[Christian Forster <[email protected]>]
*) config now generates no-xxx options for missing ciphers.
[Ulf M�ller]
*) Support the EBCDIC character set (work in progress).
File ebcdic.c not yet included because it has a different license.
[Martin Kraemer <[email protected]>]
*) Support BS2000/OSD-POSIX.
[Martin Kraemer <[email protected]>]
*) Make callbacks for key generation use void * instead of char *.
[Ben Laurie]
*) Make S/MIME samples compile (not yet tested).
[Ben Laurie]
*) Additional typesafe stacks.
[Ben Laurie]
*) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
[Bodo Moeller]
Changes between 0.9.3 and 0.9.3a [29 May 1999]
*) New configuration variant "sco5-gcc".
*) Updated some demos.
[Sean O Riordain, Wade Scholine]
*) Add missing BIO_free at exit of pkcs12 application.
[Wu Zhigang]
*) Fix memory leak in conf.c.
[Steve Henson]
*) Updates for Win32 to assembler version of MD5.
[Steve Henson]
*) Set #! path to perl in apps/der_chop to where we found it
instead of using a fixed path.
[Bodo Moeller]
*) SHA library changes for irix64-mips4-cc.
[Andy Polyakov]
*) Improvements for VMS support.
[Richard Levitte]
Changes between 0.9.2b and 0.9.3 [24 May 1999]
*) Bignum library bug fix. IRIX 6 passes "make test" now!
This also avoids the problems with SC4.2 and unpatched SC5.
[Andy Polyakov <[email protected]>]
*) New functions sk_num, sk_value and sk_set to replace the previous macros.
These are required because of the typesafe stack would otherwise break
existing code. If old code used a structure member which used to be STACK
and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
sk_num or sk_value it would produce an error because the num, data members
are not present in STACK_OF. Now it just produces a warning. sk_set
replaces the old method of assigning a value to sk_value
(e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
that does this will no longer work (and should use sk_set instead) but
this could be regarded as a "questionable" behaviour anyway.
[Steve Henson]
*) Fix most of the other PKCS#7 bugs. The "experimental" code can now
correctly handle encrypted S/MIME data.
[Steve Henson]
*) Change type of various DES function arguments from des_cblock
(which means, in function argument declarations, pointer to char)
to des_cblock * (meaning pointer to array with 8 char elements),
which allows the compiler to do more typechecking; it was like
that back in SSLeay, but with lots of ugly casts.
Introduce new type const_des_cblock.
[Bodo Moeller]
*) Reorganise the PKCS#7 library and get rid of some of the more obvious
problems: find RecipientInfo structure that matches recipient certificate
and initialise the ASN1 structures properly based on passed cipher.
[Steve Henson]
*) Belatedly make the BN tests actually check the results.
[Ben Laurie]
*) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
to and from BNs: it was completely broken. New compilation option
NEG_PUBKEY_BUG to allow for some broken certificates that encode public
key elements as negative integers.
[Steve Henson]
*) Reorganize and speed up MD5.
[Andy Polyakov <[email protected]>]
*) VMS support.
[Richard Levitte <[email protected]>]
*) New option -out to asn1parse to allow the parsed structure to be
output to a file. This is most useful when combined with the -strparse
option to examine the output of things like OCTET STRINGS.
[Steve Henson]
*) Make SSL library a little more fool-proof by not requiring any longer
that SSL_set_{accept,connect}_state be called before
SSL_{accept,connect} may be used (SSL_set_..._state is omitted
in many applications because usually everything *appeared* to work as
intended anyway -- now it really works as intended).
[Bodo Moeller]
*) Move openssl.cnf out of lib/.
[Ulf M�ller]
*) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
-Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
-Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
[Ralf S. Engelschall]
*) Various fixes to the EVP and PKCS#7 code. It may now be able to
handle PKCS#7 enveloped data properly.
[Sebastian Akerman <[email protected]>, modified by Steve]
*) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
copying pointers. The cert_st handling is changed by this in
various ways (and thus what used to be known as ctx->default_cert
is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
any longer when s->cert does not give us what we need).
ssl_cert_instantiate becomes obsolete by this change.
As soon as we've got the new code right (possibly it already is?),
we have solved a couple of bugs of the earlier code where s->cert
was used as if it could not have been shared with other SSL structures.
Note that using the SSL API in certain dirty ways now will result
in different behaviour than observed with earlier library versions:
Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
does not influence s as it used to.
In order to clean up things more thoroughly, inside SSL_SESSION
we don't use CERT any longer, but a new structure SESS_CERT
that holds per-session data (if available); currently, this is
the peer's certificate chain and, for clients, the server's certificate
and temporary key. CERT holds only those values that can have
meaningful defaults in an SSL_CTX.
[Bodo Moeller]
*) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
from the internal representation. Various PKCS#7 fixes: remove some
evil casts and set the enc_dig_alg field properly based on the signing
key type.
[Steve Henson]
*) Allow PKCS#12 password to be set from the command line or the
environment. Let 'ca' get its config file name from the environment
variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
and 'x509').
[Steve Henson]
*) Allow certificate policies extension to use an IA5STRING for the
organization field. This is contrary to the PKIX definition but
VeriSign uses it and IE5 only recognises this form. Document 'x509'
extension option.
[Steve Henson]
*) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
without disallowing inline assembler and the like for non-pedantic builds.
[Ben Laurie]
*) Support Borland C++ builder.
[Janez Jere <[email protected]>, modified by Ulf M�ller]
*) Support Mingw32.
[Ulf M�ller]
*) SHA-1 cleanups and performance enhancements.
[Andy Polyakov <[email protected]>]
*) Sparc v8plus assembler for the bignum library.
[Andy Polyakov <[email protected]>]
*) Accept any -xxx and +xxx compiler options in Configure.
[Ulf M�ller]
*) Update HPUX configuration.
[Anonymous]
*) Add missing sk_<type>_unshift() function to safestack.h
[Ralf S. Engelschall]
*) New function SSL_CTX_use_certificate_chain_file that sets the
"extra_cert"s in addition to the certificate. (This makes sense
only for "PEM" format files, as chains as a whole are not
DER-encoded.)
[Bodo Moeller]
*) Support verify_depth from the SSL API.
x509_vfy.c had what can be considered an off-by-one-error:
Its depth (which was not part of the external interface)
was actually counting the number of certificates in a chain;
now it really counts the depth.
[Bodo Moeller]
*) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
instead of X509err, which often resulted in confusing error
messages since the error codes are not globally unique
(e.g. an alleged error in ssl3_accept when a certificate
didn't match the private key).
*) New function SSL_CTX_set_session_id_context that allows to set a default
value (so that you don't need SSL_set_session_id_context for each
connection using the SSL_CTX).
[Bodo Moeller]
*) OAEP decoding bug fix.
[Ulf M�ller]
*) Support INSTALL_PREFIX for package builders, as proposed by
David Harris.
[Bodo Moeller]
*) New Configure options "threads" and "no-threads". For systems
where the proper compiler options are known (currently Solaris
and Linux), "threads" is the default.
[Bodo Moeller]
*) New script util/mklink.pl as a faster substitute for util/mklink.sh.
[Bodo Moeller]
*) Install various scripts to $(OPENSSLDIR)/misc, not to
$(INSTALLTOP)/bin -- they shouldn't clutter directories
such as /usr/local/bin.
[Bodo Moeller]
*) "make linux-shared" to build shared libraries.
[Niels Poppe <[email protected]>]
*) New Configure option no-<cipher> (rsa, idea, rc5, ...).
[Ulf M�ller]
*) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
extension adding in x509 utility.
[Steve Henson]
*) Remove NOPROTO sections and error code comments.
[Ulf M�ller]
*) Partial rewrite of the DEF file generator to now parse the ANSI
prototypes.
[Steve Henson]
*) New Configure options --prefix=DIR and --openssldir=DIR.
[Ulf M�ller]
*) Complete rewrite of the error code script(s). It is all now handled
by one script at the top level which handles error code gathering,
header rewriting and C source file generation. It should be much better
than the old method: it now uses a modified version of Ulf's parser to
read the ANSI prototypes in all header files (thus the old K&R definitions
aren't needed for error creation any more) and do a better job of
translating function codes into names. The old 'ASN1 error code imbedded
in a comment' is no longer necessary and it doesn't use .err files which
have now been deleted. Also the error code call doesn't have to appear all
on one line (which resulted in some large lines...).
[Steve Henson]
*) Change #include filenames from <foo.h> to <openssl/foo.h>.
[Bodo Moeller]
*) Change behaviour of ssl2_read when facing length-0 packets: Don't return
0 (which usually indicates a closed connection), but continue reading.
[Bodo Moeller]
*) Fix some race conditions.
[Bodo Moeller]
*) Add support for CRL distribution points extension. Add Certificate
Policies and CRL distribution points documentation.
[Steve Henson]
*) Move the autogenerated header file parts to crypto/opensslconf.h.
[Ulf M�ller]
*) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
8 of keying material. Merlin has also confirmed interop with this fix
between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
[Merlin Hughes <[email protected]>]
*) Fix lots of warnings.
[Richard Levitte <[email protected]>]
*) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
the directory spec didn't end with a LIST_SEPARATOR_CHAR.
[Richard Levitte <[email protected]>]
*) Fix problems with sizeof(long) == 8.
[Andy Polyakov <[email protected]>]
*) Change functions to ANSI C.
[Ulf M�ller]
*) Fix typos in error codes.
[Martin Kraemer <[email protected]>, Ulf M�ller]
*) Remove defunct assembler files from Configure.
[Ulf M�ller]
*) SPARC v8 assembler BIGNUM implementation.
[Andy Polyakov <[email protected]>]
*) Support for Certificate Policies extension: both print and set.
Various additions to support the r2i method this uses.
[Steve Henson]
*) A lot of constification, and fix a bug in X509_NAME_oneline() that could
return a const string when you are expecting an allocated buffer.
[Ben Laurie]
*) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
types DirectoryString and DisplayText.
[Steve Henson]
*) Add code to allow r2i extensions to access the configuration database,
add an LHASH database driver and add several ctx helper functions.
[Steve Henson]
*) Fix an evil bug in bn_expand2() which caused various BN functions to
fail when they extended the size of a BIGNUM.
[Steve Henson]
*) Various utility functions to handle SXNet extension. Modify mkdef.pl to
support typesafe stack.
[Steve Henson]
*) Fix typo in SSL_[gs]et_options().
[Nils Frostberg <[email protected]>]
*) Delete various functions and files that belonged to the (now obsolete)
old X509V3 handling code.
[Steve Henson]
*) New Configure option "rsaref".
[Ulf M�ller]
*) Don't auto-generate pem.h.
[Bodo Moeller]
*) Introduce type-safe ASN.1 SETs.
[Ben Laurie]
*) Convert various additional casted stacks to type-safe STACK_OF() variants.
[Ben Laurie, Ralf S. Engelschall, Steve Henson]
*) Introduce type-safe STACKs. This will almost certainly break lots of code
that links with OpenSSL (well at least cause lots of warnings), but fear
not: the conversion is trivial, and it eliminates loads of evil casts. A
few STACKed things have been converted already. Feel free to convert more.
In the fullness of time, I'll do away with the STACK type altogether.
[Ben Laurie]
*) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
specified in <certfile> by updating the entry in the index.txt file.
This way one no longer has to edit the index.txt file manually for
revoking a certificate. The -revoke option does the gory details now.
[Massimiliano Pala <[email protected]>, Ralf S. Engelschall]
*) Fix `openssl crl -noout -text' combination where `-noout' killed the
`-text' option at all and this way the `-noout -text' combination was
inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
[Ralf S. Engelschall]
*) Make sure a corresponding plain text error message exists for the
X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
verify callback function determined that a certificate was revoked.
[Ralf S. Engelschall]
*) Bugfix: In test/testenc, don't test "openssl <cipher>" for
ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
all available cipers including rc5, which was forgotten until now.
In order to let the testing shell script know which algorithms
are available, a new (up to now undocumented) command
"openssl list-cipher-commands" is used.
[Bodo Moeller]
*) Bugfix: s_client occasionally would sleep in select() when
it should have checked SSL_pending() first.
[Bodo Moeller]
*) New functions DSA_do_sign and DSA_do_verify to provide access to
the raw DSA values prior to ASN.1 encoding.
[Ulf M�ller]
*) Tweaks to Configure
[Niels Poppe <[email protected]>]
*) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
yet...
[Steve Henson]
*) New variables $(RANLIB) and $(PERL) in the Makefiles.
[Ulf M�ller]
*) New config option to avoid instructions that are illegal on the 80386.
The default code is faster, but requires at least a 486.
[Ulf M�ller]
*) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
SSL2_SERVER_VERSION (not used at all) macros, which are now the
same as SSL2_VERSION anyway.
[Bodo Moeller]
*) New "-showcerts" option for s_client.
[Bodo Moeller]
*) Still more PKCS#12 integration. Add pkcs12 application to openssl
application. Various cleanups and fixes.
[Steve Henson]
*) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
modify error routines to work internally. Add error codes and PBE init
to library startup routines.
[Steve Henson]
*) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
packing functions to asn1 and evp. Changed function names and error
codes along the way.
[Steve Henson]
*) PKCS12 integration: and so it begins... First of several patches to
slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
objects to objects.h
[Steve Henson]
*) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
and display support for Thawte strong extranet extension.
[Steve Henson]
*) Add LinuxPPC support.
[Jeff Dubrule <[email protected]>]
*) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
bn_div_words in alpha.s.
[Hannes Reinecke <[email protected]> and Ben Laurie]
*) Make sure the RSA OAEP test is skipped under -DRSAref because
OAEP isn't supported when OpenSSL is built with RSAref.
[Ulf Moeller <[email protected]>]
*) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
so they no longer are missing under -DNOPROTO.
[Soren S. Jorvang <[email protected]>]
Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
*) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
doesn't work when the session is reused. Coming soon!
[Ben Laurie]
*) Fix a security hole, that allows sessions to be reused in the wrong
context thus bypassing client cert protection! All software that uses
client certs and session caches in multiple contexts NEEDS PATCHING to
allow session reuse! A fuller solution is in the works.
[Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
*) Some more source tree cleanups (removed obsolete files
crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
permission on "config" script to be executable) and a fix for the INSTALL
document.
[Ulf Moeller <[email protected]>]
*) Remove some legacy and erroneous uses of malloc, free instead of
Malloc, Free.
[Lennart Bang <[email protected]>, with minor changes by Steve]
*) Make rsa_oaep_test return non-zero on error.
[Ulf Moeller <[email protected]>]
*) Add support for native Solaris shared libraries. Configure
solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
if someone would make that last step automatic.
[Matthias Loepfe <[email protected]>]
*) ctx_size was not built with the right compiler during "make links". Fixed.
[Ben Laurie]
*) Change the meaning of 'ALL' in the cipher list. It now means "everything
except NULL ciphers". This means the default cipher list will no longer
enable NULL ciphers. They need to be specifically enabled e.g. with
the string "DEFAULT:eNULL".
[Steve Henson]
*) Fix to RSA private encryption routines: if p < q then it would
occasionally produce an invalid result. This will only happen with
externally generated keys because OpenSSL (and SSLeay) ensure p > q.
[Steve Henson]
*) Be less restrictive and allow also `perl util/perlpath.pl
/path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
because this way one can also use an interpreter named `perl5' (which is
usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
installed as `perl').
[Matthias Loepfe <[email protected]>]
*) Let util/clean-depend.pl work also with older Perl 5.00x versions.
[Matthias Loepfe <[email protected]>]
*) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
advapi32.lib to Win32 build and change the pem test comparision
to fc.exe (thanks to Ulrich Kroener <[email protected]> for the
suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
and crypto/des/ede_cbcm_enc.c.
[Steve Henson]
*) DES quad checksum was broken on big-endian architectures. Fixed.
[Ben Laurie]
*) Comment out two functions in bio.h that aren't implemented. Fix up the
Win32 test batch file so it (might) work again. The Win32 test batch file
is horrible: I feel ill....
[Steve Henson]
*) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
in e_os.h. Audit of header files to check ANSI and non ANSI
sections: 10 functions were absent from non ANSI section and not exported
from Windows DLLs. Fixed up libeay.num for new functions.
[Steve Henson]
*) Make `openssl version' output lines consistent.
[Ralf S. Engelschall]
*) Fix Win32 symbol export lists for BIO functions: Added
BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
to ms/libeay{16,32}.def.
[Ralf S. Engelschall]
*) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
fine under Unix and passes some trivial tests I've now added. But the
whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
added to make sure no one expects that this stuff really works in the
OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
openssl_bio.xs.
[Ralf S. Engelschall]
*) Fix the generation of two part addresses in perl.
[Kenji Miyake <[email protected]>, integrated by Ben Laurie]
*) Add config entry for Linux on MIPS.
[John Tobey <[email protected]>]
*) Make links whenever Configure is run, unless we are on Windoze.
[Ben Laurie]
*) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
Currently only issuerAltName and AuthorityKeyIdentifier make any sense
in CRLs.
[Steve Henson]
*) Add a useful kludge to allow package maintainers to specify compiler and
other platforms details on the command line without having to patch the
Configure script everytime: One now can use ``perl Configure
<id>:<details>'', i.e. platform ids are allowed to have details appended
to them (seperated by colons). This is treated as there would be a static
pre-configured entry in Configure's %table under key <id> with value
<details> and ``perl Configure <id>'' is called. So, when you want to
perform a quick test-compile under FreeBSD 3.1 with pgcc and without
assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
now, which overrides the FreeBSD-elf entry on-the-fly.
[Ralf S. Engelschall]
*) Disable new TLS1 ciphersuites by default: they aren't official yet.
[Ben Laurie]
*) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
on the `perl Configure ...' command line. This way one can compile
OpenSSL libraries with Position Independent Code (PIC) which is needed
for linking it into DSOs.
[Ralf S. Engelschall]
*) Remarkably, export ciphers were totally broken and no-one had noticed!
Fixed.
[Ben Laurie]
*) Cleaned up the LICENSE document: The official contact for any license
questions now is the OpenSSL core team under [email protected].
And add a paragraph about the dual-license situation to make sure people
recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
to the OpenSSL toolkit.
[Ralf S. Engelschall]
*) General source tree makefile cleanups: Made `making xxx in yyy...'
display consistent in the source tree and replaced `/bin/rm' by `rm'.
Additonally cleaned up the `make links' target: Remove unnecessary
semicolons, subsequent redundant removes, inline point.sh into mklink.sh
to speed processing and no longer clutter the display with confusing
stuff. Instead only the actually done links are displayed.
[Ralf S. Engelschall]
*) Permit null encryption ciphersuites, used for authentication only. It used
to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
encryption.
[Ben Laurie]
*) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
signed attributes when verifying signatures (this would break them),
the detached data encoding was wrong and public keys obtained using
X509_get_pubkey() weren't freed.
[Steve Henson]
*) Add text documentation for the BUFFER functions. Also added a work around
to a Win95 console bug. This was triggered by the password read stuff: the
last character typed gets carried over to the next fread(). If you were
generating a new cert request using 'req' for example then the last
character of the passphrase would be CR which would then enter the first
field as blank.
[Steve Henson]
*) Added the new `Includes OpenSSL Cryptography Software' button as
doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
button and can be used by applications based on OpenSSL to show the
relationship to the OpenSSL project.
[Ralf S. Engelschall]
*) Remove confusing variables in function signatures in files
ssl/ssl_lib.c and ssl/ssl.h.
[Lennart Bong <[email protected]>]
*) Don't install bss_file.c under PREFIX/include/
[Lennart Bong <[email protected]>]
*) Get the Win32 compile working again. Modify mkdef.pl so it can handle
functions that return function pointers and has support for NT specific
stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
#ifdef WIN32 and WINNTs sprinkled about the place and some changes from
unsigned to signed types: this was killing the Win32 compile.
[Steve Henson]
*) Add new certificate file to stack functions,
SSL_add_dir_cert_subjects_to_stack() and
SSL_add_file_cert_subjects_to_stack(). These largely supplant
SSL_load_client_CA_file(), and can be used to add multiple certs easily
to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
This means that Apache-SSL and similar packages don't have to mess around
to add as many CAs as they want to the preferred list.
[Ben Laurie]
*) Experiment with doxygen documentation. Currently only partially applied to
ssl/ssl_lib.c.
See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
openssl.doxy as the configuration file.
[Ben Laurie]
*) Get rid of remaining C++-style comments which strict C compilers hate.
[Ralf S. Engelschall, pointed out by Carlos Amengual]
*) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
compiled in by default: it has problems with large keys.
[Steve Henson]
*) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
DH private keys and/or callback functions which directly correspond to
their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
is needed for applications which have to configure certificates on a
per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
(e.g. s_server).
For the RSA certificate situation is makes no difference, but
for the DSA certificate situation this fixes the "no shared cipher"
problem where the OpenSSL cipher selection procedure failed because the
temporary keys were not overtaken from the context and the API provided
no way to reconfigure them.
The new functions now let applications reconfigure the stuff and they
are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
non-public-API function ssl_cert_instantiate() is used as a helper
function and also to reduce code redundancy inside ssl_rsa.c.
[Ralf S. Engelschall]
*) Move s_server -dcert and -dkey options out of the undocumented feature
area because they are useful for the DSA situation and should be
recognized by the users.
[Ralf S. Engelschall]
*) Fix the cipher decision scheme for export ciphers: the export bits are
*not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
SSL_EXP_MASK. So, the original variable has to be used instead of the
already masked variable.
[Richard Levitte <[email protected]>]
*) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
[Richard Levitte <[email protected]>]
*) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
from `int' to `unsigned int' because it's a length and initialized by
EVP_DigestFinal() which expects an `unsigned int *'.
[Richard Levitte <[email protected]>]
*) Don't hard-code path to Perl interpreter on shebang line of Configure
script. Instead use the usual Shell->Perl transition trick.
[Ralf S. Engelschall]
*) Make `openssl x509 -noout -modulus' functional also for DSA certificates
(in addition to RSA certificates) to match the behaviour of `openssl dsa
-noout -modulus' as it's already the case for `openssl rsa -noout
-modulus'. For RSA the -modulus is the real "modulus" while for DSA
currently the public key is printed (a decision which was already done by
`openssl dsa -modulus' in the past) which serves a similar purpose.
Additionally the NO_RSA no longer completely removes the whole -modulus
option; it now only avoids using the RSA stuff. Same applies to NO_DSA
now, too.
[Ralf S. Engelschall]
*) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
BIO. See the source (crypto/evp/bio_ok.c) for more info.
[Arne Ansper <[email protected]>]
*) Dump the old yucky req code that tried (and failed) to allow raw OIDs
to be added. Now both 'req' and 'ca' can use new objects defined in the
config file.
[Steve Henson]
*) Add cool BIO that does syslog (or event log on NT).
[Arne Ansper <[email protected]>, integrated by Ben Laurie]
*) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
[Ben Laurie]
*) Add preliminary config info for new extension code.
[Steve Henson]
*) Make RSA_NO_PADDING really use no padding.
[Ulf Moeller <[email protected]>]
*) Generate errors when private/public key check is done.
[Ben Laurie]
*) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
for some CRL extensions and new objects added.
[Steve Henson]
*) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
key usage extension and fuller support for authority key id.
[Steve Henson]
*) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
padding method for RSA, which is recommended for new applications in PKCS
#1 v2.0 (RFC 2437, October 1998).
OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
against Bleichbacher's attack on RSA.
[Ulf Moeller <[email protected]>, reformatted, corrected and integrated by
Ben Laurie]
*) Updates to the new SSL compression code
[Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
*) Fix so that the version number in the master secret, when passed
via RSA, checks that if TLS was proposed, but we roll back to SSLv3
(because the server will not accept higher), that the version number
is 0x03,0x01, not 0x03,0x00
[Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
*) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
[Steve Henson]
*) Support for RAW extensions where an arbitrary extension can be
created by including its DER encoding. See apps/openssl.cnf for
an example.
[Steve Henson]
*) Make sure latest Perl versions don't interpret some generated C array
code as Perl array code in the crypto/err/err_genc.pl script.
[Lars Weber <[email protected]>]
*) Modify ms/do_ms.bat to not generate assembly language makefiles since
not many people have the assembler. Various Win32 compilation fixes and
update to the INSTALL.W32 file with (hopefully) more accurate Win32
build instructions.
[Steve Henson]
*) Modify configure script 'Configure' to automatically create crypto/date.h
file under Win32 and also build pem.h from pem.org. New script
util/mkfiles.pl to create the MINFO file on environments that can't do a
'make files': perl util/mkfiles.pl >MINFO should work.
[Steve Henson]
*) Major rework of DES function declarations, in the pursuit of correctness
and purity. As a result, many evil casts evaporated, and some weirdness,
too. You may find this causes warnings in your code. Zapping your evil
casts will probably fix them. Mostly.
[Ben Laurie]
*) Fix for a typo in asn1.h. Bug fix to object creation script
obj_dat.pl. It considered a zero in an object definition to mean
"end of object": none of the objects in objects.h have any zeros
so it wasn't spotted.
[Steve Henson, reported by Erwann ABALEA <[email protected]>]
*) Add support for Triple DES Cipher Block Chaining with Output Feedback
Masking (CBCM). In the absence of test vectors, the best I have been able
to do is check that the decrypt undoes the encrypt, so far. Send me test
vectors if you have them.
[Ben Laurie]
*) Correct calculation of key length for export ciphers (too much space was
allocated for null ciphers). This has not been tested!
[Ben Laurie]
*) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
message is now correct (it understands "crypto" and "ssl" on its
command line). There is also now an "update" option. This will update
the util/ssleay.num and util/libeay.num files with any new functions.
If you do a:
perl util/mkdef.pl crypto ssl update
it will update them.
[Steve Henson]
*) Overhauled the Perl interface (perl/*):
- ported BN stuff to OpenSSL's different BN library
- made the perl/ source tree CVS-aware
- renamed the package from SSLeay to OpenSSL (the files still contain
their history because I've copied them in the repository)
- removed obsolete files (the test scripts will be replaced
by better Test::Harness variants in the future)
[Ralf S. Engelschall]
*) First cut for a very conservative source tree cleanup:
1. merge various obsolete readme texts into doc/ssleay.txt
where we collect the old documents and readme texts.
2. remove the first part of files where I'm already sure that we no
longer need them because of three reasons: either they are just temporary
files which were left by Eric or they are preserved original files where
I've verified that the diff is also available in the CVS via "cvs diff
-rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
the crypto/md/ stuff).
[Ralf S. Engelschall]
*) More extension code. Incomplete support for subject and issuer alt
name, issuer and authority key id. Change the i2v function parameters
and add an extra 'crl' parameter in the X509V3_CTX structure: guess
what that's for :-) Fix to ASN1 macro which messed up
IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
[Steve Henson]
*) Preliminary support for ENUMERATED type. This is largely copied from the
INTEGER code.
[Steve Henson]
*) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
[Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
*) Make sure `make rehash' target really finds the `openssl' program.
[Ralf S. Engelschall, Matthias Loepfe <[email protected]>]
*) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
like to hear about it if this slows down other processors.
[Ben Laurie]
*) Add CygWin32 platform information to Configure script.
[Alan Batie <[email protected]>]
*) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
[Rainer W. Gerling <[email protected]>]
*) New program nseq to manipulate netscape certificate sequences
[Steve Henson]
*) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
few typos.
[Steve Henson]
*) Fixes to BN code. Previously the default was to define BN_RECURSION
but the BN code had some problems that would cause failures when
doing certificate verification and some other functions.
[Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
*) Add ASN1 and PEM code to support netscape certificate sequences.
[Steve Henson]
*) Add ASN1 and PEM code to support netscape certificate sequences.
[Steve Henson]
*) Add several PKIX and private extended key usage OIDs.
[Steve Henson]
*) Modify the 'ca' program to handle the new extension code. Modify
openssl.cnf for new extension format, add comments.
[Steve Henson]
*) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
and add a sample to openssl.cnf so req -x509 now adds appropriate
CA extensions.
[Steve Henson]
*) Continued X509 V3 changes. Add to other makefiles, integrate with the
error code, add initial support to X509_print() and x509 application.
[Steve Henson]
*) Takes a deep breath and start addding X509 V3 extension support code. Add
files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
stuff is currently isolated and isn't even compiled yet.
[Steve Henson]
*) Continuing patches for GeneralizedTime. Fix up certificate and CRL
ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
Removed the versions check from X509 routines when loading extensions:
this allows certain broken certificates that don't set the version
properly to be processed.
[Steve Henson]
*) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
can still be regenerated with "make depend".
[Ben Laurie]
*) Spelling mistake in C version of CAST-128.
[Ben Laurie, reported by Jeremy Hylton <[email protected]>]
*) Changes to the error generation code. The perl script err-code.pl
now reads in the old error codes and retains the old numbers, only
adding new ones if necessary. It also only changes the .err files if new
codes are added. The makefiles have been modified to only insert errors
when needed (to avoid needlessly modifying header files). This is done
by only inserting errors if the .err file is newer than the auto generated
C file. To rebuild all the error codes from scratch (the old behaviour)
either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
or delete all the .err files.
[Steve Henson]
*) CAST-128 was incorrectly implemented for short keys. The C version has
been fixed, but is untested. The assembler versions are also fixed, but
new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
to regenerate it if needed.
[Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
Hagino <[email protected]>]
*) File was opened incorrectly in randfile.c.
[Ulf M�ller <[email protected]>]
*) Beginning of support for GeneralizedTime. d2i, i2d, check and print
functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
GeneralizedTime. ASN1_TIME is the proper type used in certificates et
al: it's just almost always a UTCTime. Note this patch adds new error
codes so do a "make errors" if there are problems.
[Steve Henson]
*) Correct Linux 1 recognition in config.
[Ulf M�ller <[email protected]>]
*) Remove pointless MD5 hash when using DSA keys in ca.
[Anonymous <[email protected]>]
*) Generate an error if given an empty string as a cert directory. Also
generate an error if handed NULL (previously returned 0 to indicate an
error, but didn't set one).
[Ben Laurie, reported by Anonymous <[email protected]>]
*) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
[Ben Laurie]
*) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
parameters. This was causing a warning which killed off the Win32 compile.
[Steve Henson]
*) Remove C++ style comments from crypto/bn/bn_local.h.
[Neil Costigan <[email protected]>]
*) The function OBJ_txt2nid was broken. It was supposed to return a nid
based on a text string, looking up short and long names and finally
"dot" format. The "dot" format stuff didn't work. Added new function
OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
OID is not part of the table.
[Steve Henson]
*) Add prototypes to X509 lookup/verify methods, fixing a bug in
X509_LOOKUP_by_alias().
[Ben Laurie]
*) Sort openssl functions by name.
[Ben Laurie]
*) Get the gendsa program working (hopefully) and add it to app list. Remove
encryption from sample DSA keys (in case anyone is interested the password
was "1234").
[Steve Henson]
*) Make _all_ *_free functions accept a NULL pointer.
[Frans Heymans <[email protected]>]
*) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
NULL pointers.
[Anonymous <[email protected]>]
*) s_server should send the CAfile as acceptable CAs, not its own cert.
[Bodo Moeller <[email protected]>]
*) Don't blow it for numeric -newkey arguments to apps/req.
[Bodo Moeller <[email protected]>]
*) Temp key "for export" tests were wrong in s3_srvr.c.
[Anonymous <[email protected]>]
*) Add prototype for temp key callback functions
SSL_CTX_set_tmp_{rsa,dh}_callback().
[Ben Laurie]
*) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
[Steve Henson]
*) X509_name_add_entry() freed the wrong thing after an error.
[Arne Ansper <[email protected]>]
*) rsa_eay.c would attempt to free a NULL context.
[Arne Ansper <[email protected]>]
*) BIO_s_socket() had a broken should_retry() on Windoze.
[Arne Ansper <[email protected]>]
*) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
[Arne Ansper <[email protected]>]
*) Make sure the already existing X509_STORE->depth variable is initialized
in X509_STORE_new(), but document the fact that this variable is still
unused in the certificate verification process.
[Ralf S. Engelschall]
*) Fix the various library and apps files to free up pkeys obtained from
X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
[Steve Henson]
*) Fix reference counting in X509_PUBKEY_get(). This makes
demos/maurice/example2.c work, amongst others, probably.
[Steve Henson and Ben Laurie]
*) First cut of a cleanup for apps/. First the `ssleay' program is now named
`openssl' and second, the shortcut symlinks for the `openssl <command>'
are no longer created. This way we have a single and consistent command
line interface `openssl <command>', similar to `cvs <command>'.
[Ralf S. Engelschall, Paul Sutton and Ben Laurie]
*) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
BIT STRING wrapper always have zero unused bits.
[Steve Henson]
*) Add CA.pl, perl version of CA.sh, add extended key usage OID.
[Steve Henson]
*) Make the top-level INSTALL documentation easier to understand.
[Paul Sutton]
*) Makefiles updated to exit if an error occurs in a sub-directory
make (including if user presses ^C) [Paul Sutton]
*) Make Montgomery context stuff explicit in RSA data structure.
[Ben Laurie]
*) Fix build order of pem and err to allow for generated pem.h.
[Ben Laurie]
*) Fix renumbering bug in X509_NAME_delete_entry().
[Ben Laurie]
*) Enhanced the err-ins.pl script so it makes the error library number
global and can add a library name. This is needed for external ASN1 and
other error libraries.
[Steve Henson]
*) Fixed sk_insert which never worked properly.
[Steve Henson]
*) Fix ASN1 macros so they can handle indefinite length construted
EXPLICIT tags. Some non standard certificates use these: they can now
be read in.
[Steve Henson]
*) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
into a single doc/ssleay.txt bundle. This way the information is still
preserved but no longer messes up this directory. Now it's new room for
the new set of documenation files.
[Ralf S. Engelschall]
*) SETs were incorrectly DER encoded. This was a major pain, because they
shared code with SEQUENCEs, which aren't coded the same. This means that
almost everything to do with SETs or SEQUENCEs has either changed name or
number of arguments.
[Ben Laurie, based on a partial fix by GP Jayan <[email protected]>]
*) Fix test data to work with the above.
[Ben Laurie]
*) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
was already fixed by Eric for 0.9.1 it seems.
[Ben Laurie - pointed out by Ulf M�ller <[email protected]>]
*) Autodetect FreeBSD3.
[Ben Laurie]
*) Fix various bugs in Configure. This affects the following platforms:
nextstep
ncr-scde
unixware-2.0
unixware-2.0-pentium
sco5-cc.
[Ben Laurie]
*) Eliminate generated files from CVS. Reorder tests to regenerate files
before they are needed.
[Ben Laurie]
*) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
[Ben Laurie]
Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
*) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
changed SSLeay to OpenSSL in version strings.
[Ralf S. Engelschall]
*) Some fixups to the top-level documents.
[Paul Sutton]
*) Fixed the nasty bug where rsaref.h was not found under compile-time
because the symlink to include/ was missing.
[Ralf S. Engelschall]
*) Incorporated the popular no-RSA/DSA-only patches
which allow to compile a RSA-free SSLeay.
[Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
*) Fixed nasty rehash problem under `make -f Makefile.ssl links'
when "ssleay" is still not found.
[Ralf S. Engelschall]
*) Added more platforms to Configure: Cray T3E, HPUX 11,
[Ralf S. Engelschall, Beckmann <[email protected]>]
*) Updated the README file.
[Ralf S. Engelschall]
*) Added various .cvsignore files in the CVS repository subdirs
to make a "cvs update" really silent.
[Ralf S. Engelschall]
*) Recompiled the error-definition header files and added
missing symbols to the Win32 linker tables.
[Ralf S. Engelschall]
*) Cleaned up the top-level documents;
o new files: CHANGES and LICENSE
o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
o merged COPYRIGHT into LICENSE
o removed obsolete TODO file
o renamed MICROSOFT to INSTALL.W32
[Ralf S. Engelschall]
*) Removed dummy files from the 0.9.1b source tree:
crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
[Ralf S. Engelschall]
*) Added various platform portability fixes.
[Mark J. Cox]
*) The Genesis of the OpenSSL rpject:
We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
Young and Tim J. Hudson created while they were working for C2Net until
summer 1998.
[The OpenSSL Project]
Changes between 0.9.0b and 0.9.1b [not released]
*) Updated a few CA certificates under certs/
[Eric A. Young]
*) Changed some BIGNUM api stuff.
[Eric A. Young]
*) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
DGUX x86, Linux Alpha, etc.
[Eric A. Young]
*) New COMP library [crypto/comp/] for SSL Record Layer Compression:
RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
available).
[Eric A. Young]
*) Add -strparse option to asn1pars program which parses nested
binary structures
[Dr Stephen Henson <[email protected]>]
*) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
[Eric A. Young]
*) DSA fix for "ca" program.
[Eric A. Young]
*) Added "-genkey" option to "dsaparam" program.
[Eric A. Young]
*) Added RIPE MD160 (rmd160) message digest.
[Eric A. Young]
*) Added -a (all) option to "ssleay version" command.
[Eric A. Young]
*) Added PLATFORM define which is the id given to Configure.
[Eric A. Young]
*) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
[Eric A. Young]
*) Extended the ASN.1 parser routines.
[Eric A. Young]
*) Extended BIO routines to support REUSEADDR, seek, tell, etc.
[Eric A. Young]
*) Added a BN_CTX to the BN library.
[Eric A. Young]
*) Fixed the weak key values in DES library
[Eric A. Young]
*) Changed API in EVP library for cipher aliases.
[Eric A. Young]
*) Added support for RC2/64bit cipher.
[Eric A. Young]
*) Converted the lhash library to the crypto/mem.c functions.
[Eric A. Young]
*) Added more recognized ASN.1 object ids.
[Eric A. Young]
*) Added more RSA padding checks for SSL/TLS.
[Eric A. Young]
*) Added BIO proxy/filter functionality.
[Eric A. Young]
*) Added extra_certs to SSL_CTX which can be used
send extra CA certificates to the client in the CA cert chain sending
process. It can be configured with SSL_CTX_add_extra_chain_cert().
[Eric A. Young]
*) Now Fortezza is denied in the authentication phase because
this is key exchange mechanism is not supported by SSLeay at all.
[Eric A. Young]
*) Additional PKCS1 checks.
[Eric A. Young]
*) Support the string "TLSv1" for all TLS v1 ciphers.
[Eric A. Young]
*) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
ex_data index of the SSL context in the X509_STORE_CTX ex_data.
[Eric A. Young]
*) Fixed a few memory leaks.
[Eric A. Young]
*) Fixed various code and comment typos.
[Eric A. Young]
*) A minor bug in ssl/s3_clnt.c where there would always be 4 0
bytes sent in the client random.
[Edward Bishop <[email protected]>]