-
OpenSSL CHANGES
_______________
- Changes between 0.9.5a and 0.9.6 [xx XXX 2000]
+ Changes between 0.9.6 and 0.9.7 [xx XXX 2000]
+
+ *) 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
+ (Tonelli-Shanks algorithm).
+ [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, 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]
+
+ *) 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]
+
+ *) Disable ssl2_peek and ssl3_peek (i.e., both implementations
+ of SSL_peek) because they both are completely broken.
+ They will be fixed RSN by adding an additional 'peek' parameter
+ to the internal read functions.
+ [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]
+
+ *) 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]
+
+ *) 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 exponentation, 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 <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
+
+ *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
+ was actually never needed) and in BN_mul(). The removal in BN_mul()
+ required a small change in bn_mul_part_recursive() and the addition
+ of the static 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]
+
+ *) 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]
+
+ *) 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 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]
+
+ *) 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]
+
+ *) 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]
+
+ *) Add support for shared libraries under Irix.
+ [Albert Chin-A-Young <china@thewrittenword.com>]
+
+ *) Improve RPM specification file by forcing symbolic linking and making
+ sure the installed documentation is also owned by root.root.
+ [Damien Miller <djm@mindrot.org>]
+
+ *) Add configuration option to build on Linux on both big-endian and
+ little-endian MIPS.
+ [Ralf Baechle <ralf@uni-koblenz.de>]
+
+ *) 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]
+
+ *) Add the possibility to create shared libraries on HP-UX
+ [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 <mainbug@celocom.de>, 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 typo in get_cert_by_subject() in by_dir.c
+ [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
+
+ *) 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 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]
+
+ *) 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 <gertz@epact.se>]
+
+ *) Correct util/mkdef.pl to be selective about disabled algorithms.
+ Previously, it would create entries for disableed algorithms no
+ matter what.
+ [Richard Levitte]
+
+ 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 <jaltman@columbia.edu>]
+
+ *) 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 Möller]
*) Add DSO method for VMS.
[Richard Levitte]
[Steve Henson]
*) Changes needed for Tandem NSK.
- [Scott Uroff scott@xypro.com]
+ [Scott Uroff <scott@xypro.com>]
*) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
RSA_padding_check_SSLv23(), special padding was never detected
projects / openssl.git / blobdiff