-
OpenSSL CHANGES
_______________
Changes between 0.9.6 and 0.9.7 [xx XXX 2000]
+ *) Use better test patterns in bntest.
+ [Ulf Möller]
+
+ *) Added Kerberos Cipher Suites to be used with TLS, as written in RFC
+ 2712.
+ [Veers Staats <staatsvr@asc.hpc.mil>,
+ Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
+
+ *) rand_win.c fix for Borland C.
+ [Ulf Möller]
+
+ *) BN_rshift bugfix for n == 0.
+ [Bodo Moeller]
+
+ *) 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
+ (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 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 <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 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]
projects / openssl.git / blobdiff