-
OpenSSL CHANGES
_______________
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
projects / openssl.git / blobdiff