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Author SHA1 Message Date
Geoff Thorpe
82b2f57e30 Use the BN_is_odd() macro in place of code that (inconsistently) does much 
the same thing.

Also, I have some stuff on the back-burner related to some BN_CTX notes
from Peter Gutmann about his cryptlib hacks to the bignum code. The BN_CTX
comments are there to remind me of some relevant points in the code.
 2003-12-02 03:28:24 +00:00
Geoff Thorpe
d870740cd7 Put the first stage of my bignum debugging adventures into CVS. This code 
is itself experimental, and in addition may cause execution to break on
existing openssl "bugs" that previously were harmless or at least
invisible.
 2003-11-04 22:54:49 +00:00
Bodo Möller
8dea52fa42 Fix some things that look like bugs. 
One problem that looked like a problem in bn_recp.c at first turned
out to be a BN_mul bug.  An example is given in bn_recp.c; finding
the bug responsible for this is left as an exercise.
 2000-12-07 22:06:09 +00:00
Bodo Möller
25439b76ad Move reduction step from BN_mod_exp to BN_mod_exp_mont_word. 
Fix BN_mod_exp_simple for a==0 (mod m).
Skip useless round in BN_mod_sqrt (1 is always a square, no need
to test BN_kronecker for it).
 2000-11-30 09:45:26 +00:00
Bodo Möller
73c2522c7c Handle special cases correctly in exponentation functions. 
test_bn still fails in the BN_sqrt test because
small primes appear to turn into zero for no
obvious reason, leading to "div by zero" errors.
 2000-11-30 00:33:18 +00:00
Bodo Möller
cd2eebfd64 BN_sqrt 2000-11-30 00:18:19 +00:00
Bodo Möller
499e167fda Improve BN_mod_inverse performance. 
Get the BN_mod_exp_mont bugfix (for handling negative inputs) correct
this time.
 2000-11-29 09:41:19 +00:00
Bodo Möller
c94b6de017 Timings. 2000-11-28 11:47:51 +00:00
Bodo Möller
78a0c1f18d modular arithmetics 
"make update"
 2000-11-26 16:42:38 +00:00
Richard Levitte
020fc820dc Constify the BIGNUM routines a bit more. The only trouble were the 
two functions that did expansion on in parameters (BN_mul() and
BN_sqr()).  The problem was solved by making bn_dup_expand() which is
a mix of bn_expand2() and BN_dup().
 2000-11-06 21:15:54 +00:00
Richard Levitte
5270e7025e Merge the engine branch into the main trunk. All conflicts resolved. 
At the same time, add VMS support for Rijndael.
 2000-10-26 21:07:28 +00:00
Bodo Möller
fc57ebc057 Actually comment out the parts of BN_MOD_MUL_WORD that I inteded to 
comment out in the previous commit
 2000-06-23 08:10:28 +00:00
Bodo Möller
e958c5afe7 In BN_mod_exp_mont_word, avoid one application of BN_MOD_MUL_WORD, 
and for small 'a' also a couple of calls to
BN_mod_mul_montgomery(r, r, r, ...).
 2000-06-23 05:51:37 +00:00
Bodo Möller
c3b1424cc0 Use BN_CTX_end when exiting early from BN_mod_exp_mont_word because 
BN_mod_exp_atalla could be used.
 2000-06-13 13:50:42 +00:00
Geoff Thorpe
8ba6d1b0cc The atalla functionality doesn't work with the "word" version of 
BN_mod_exp. Call the regular atalla mod_exp operation instead.
 2000-06-13 13:18:51 +00:00
Bodo Möller
dc434bbcb0 Slightly faster DSA verification (BN_mod_exp2_mont), 
marginally faster BN_mod_exp for 1024 bit exponents.
 2000-06-08 20:26:03 +00:00
Bodo Möller
f8989a2155 Use the equivalent of a sliding window (without precomputation 
because we're only handling words anyway) in BN_mod_exp_mont_word
making it a little faster for very small exponents,
and adjust the performance gain estimate in CHANGES according
to slightly more thorough measurements.
(15% faster than BN_mod_exp_mont for "large" base,
20% faster than BN_mod_exp_mont for small base.)
 2000-06-08 09:39:28 +00:00
Bodo Möller
6dad7bd69c Speed up DH with small generator. 2000-06-07 21:29:25 +00:00
Ben Laurie
bd03b99b9b Add support for Compaq Atalla crypto accelerator. 2000-02-16 22:15:39 +00:00
Ulf Möller
9b141126d4 New functions BN_CTX_start(), BN_CTX_get(), BN_CTX_end() to access 
temporary BIGNUMs. BN_CTX still uses a fixed number of BIGNUMs, but
the BN_CTX implementation could now easily be changed.
 2000-02-05 14:17:32 +00:00
Ben Laurie
84c15db551 Some constification and stacks that slipped through the cracks (how?). 1999-06-04 22:23:10 +00:00
Ulf Möller
6b691a5c85 Change functions to ANSI C. 1999-04-19 21:31:43 +00:00
Mark J. Cox
a0a5407901 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.

Submitted by: Eric A Young from a C2Net version of SSLeay
Reviewed by: Mark J Cox
PR:
 1999-01-28 10:40:38 +00:00
Ralf S. Engelschall
dfeab0689f Import of old SSLeay release: SSLeay 0.9.1b (unreleased) 1998-12-21 11:00:56 +00:00
Ralf S. Engelschall
58964a4922 Import of old SSLeay release: SSLeay 0.9.0b 1998-12-21 10:56:39 +00:00
Ralf S. Engelschall
d02b48c63a Import of old SSLeay release: SSLeay 0.8.1b 1998-12-21 10:52:47 +00:00