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275 commits

Author SHA1 Message Date
Bodo Möller
de6e207db6 It's "#elif", not "#elsif". 2000-11-30 19:35:51 +00:00
Bodo Möller
db5bda670f Changes to Lenka's Montgomery implementation. 
Submitted by: Lenka Fibikova
 2000-11-30 17:35:17 +00:00
Bodo Möller
19cda70045 Corrections to the comments in BN_mod_inverse. 2000-11-30 12:53:53 +00:00
Bodo Möller
04ca16890b BN_mod_exp problems ... 2000-11-30 11:47:04 +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
ac445acf69 bn_modfs.c is no longer needed, a BN_sqrt implementation 
exists in bn_sqrt.c now
 2000-11-30 00:43:41 +00:00
Bodo Möller
77ac92d00a Fix bntest.c problem -- one of the primes got lost 2000-11-30 00:37:49 +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
01e62900c7 BN_legendre is no longer needed now that OpenSSL has BN_kronecker. 2000-11-29 19:59:59 +00:00
Bodo Möller
eb1f1b0a34 Fix BN_kronecker so that it works correctly if 'a' is negative 
(we need the two's complement of BN_lsw then).
 2000-11-29 19:26:33 +00:00
Bodo Möller
14697d9d6d BN_to_montgomery expects its inputs to be in the interval 0 .. modulus-1, 
so we have to reduce the random numbers used in test_mont.

Before this change, test_mont failed in [debug-]solaris-sparcv9-gcc
configurations ("Montgomery multiplication test failed!" because
the multiplication result obtained with Montgomery multiplication
differed from the result obtained by BN_mod_mul).
Substituing the old version of bn_gcd.c (BN_mod_inverse) did not avoid
the problem.

The strange thing is that it I did not observe any problems
when using debug-solaris-sparcv8-gcc and solaris-sparcv9-cc,
as well as when compiling OpenSSL 0.9.6 in the solaric-sparcv9-gcc
configuration on the same system.
 2000-11-29 18:08:24 +00:00
Bodo Möller
429b8162c6 add missing braces 2000-11-29 16:43:03 +00:00
Bodo Möller
03a0848922 Fix warnings in expspeed.c (but the segmentation fault remains) 
Improve readability of bn_shift.c.

Add comment in bn_lib.c (why zero data between top and max?)

Change bntest.c output for BN_kronecker test
 2000-11-29 13:40:08 +00:00
Bodo Möller
9161672950 BN_bin2bn did *not* contain an off-by-one error; 
I'm still investigating what caused the segementation fault
(maybe "make clean; make" will cure it ...).
But BN_bin2bn should always reset ret->neg.
 2000-11-29 12:53:41 +00:00
Bodo Möller
a08bcccc67 Expand expspeed.c to make BN_kronecker timings. 
This caused a segmentation fault in calls to malloc, so I cleaned up
bn_lib.c a little so that it is easier to see what is going on.
The bug turned out to be an off-by-one error in BN_bin2bn.
 2000-11-29 12:32:10 +00:00
Bodo Möller
bdec3c5323 Implement BN_kronecker test. 
Modify "CHANGES" entry for BN_mod_inverse (it's not just avoiding BN_div
that increases performance, avoiding BN_mul also helps)
 2000-11-29 11:06:50 +00:00
Bodo Möller
b6cafbd7d8 Make BN_mod_inverse a little faster 2000-11-29 09:57:13 +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
Richard Levitte
0135e33511 Copy and paste error... bn_add_part_words() should of course call 
bn_add_words(), not bn_sub_words()...
 2000-11-29 09:36:48 +00:00
Bodo Möller
adcc64cd9e Use BN_pseudo_rand instead of BN_rand 2000-11-28 11:49:12 +00:00
Bodo Möller
c94b6de017 Timings. 2000-11-28 11:47:51 +00:00
Bodo Möller
d79cab27a5 Correct a bug in BN_kronecker. 
Sketch the test for BN_kronecker.
 2000-11-28 07:53:35 +00:00
Bodo Möller
c782089611 Add test_kron function, which will contain a test for BN_kronecker. 2000-11-28 06:41:05 +00:00
Bodo Möller
265592b99a Add bn_kron.c (BN_kronecker), which I forgot in the previous commit. 
Also add the next file in advance so that I can't forget this one :-)
 2000-11-28 06:37:43 +00:00
Bodo Möller
077ff61eef Undo previous commit, which was an accident. 2000-11-27 21:22:45 +00:00
Bodo Möller
dcbd0d74d5 Fix BN_is_... macros. 
Fix BN_gcd.
Analyze BN_mod_inverse.
Add BN_kronecker.
"make update".
 2000-11-27 21:17:20 +00:00
Bodo Möller
1ec0a3862e Change submitted files so that they compile (in particular, 
use BN_CTX_start/get/end instead of accessing ctx->tos).

Change indentation to "EAY" style.
 2000-11-26 19:20:56 +00:00
Bodo Möller
946cd9a540 Change submitted files so that they compile (in particular, 
use BN_CTX_start/get/end instead of accessing ctx->tos).

Change indentation to "EAY" style.
 2000-11-26 19:13:52 +00:00
Bodo Möller
5acaa49504 More BN_mod_... functions. 2000-11-26 18:31:32 +00:00
Bodo Möller
535b9b5724 Add bn_mod.c (should have happend in the previous commit ...). 
BN_swap manual page.
 2000-11-26 16:46:57 +00:00
Bodo Möller
78a0c1f18d modular arithmetics 
"make update"
 2000-11-26 16:42:38 +00:00
Bodo Möller
6cc5e19d47 Remove CR at line ends. 2000-11-26 12:55:19 +00:00
Bodo Möller
7e0c5264e7 Elliptic curves over GF(p), new BIGNUM functions, Montgomery re-implementation. 
These new files will not be included literally in OpenSSL, but I intend
to integrate most of their contents.  Most file names will change,
and when the integration is done, the superfluous files will be deleted.

Submitted by: Lenka Fibikova <fibikova@exp-math.uni-essen.de>
 2000-11-26 12:12:35 +00:00
Richard Levitte
73343ac38a Correct a number of syntax errors. 2000-11-22 18:20:31 +00:00
Richard Levitte
c4f3542abf Reimplement bn_div_words, bn_add_words and bn_sub_words for VAX. 
I'm a little bit nervous about bn_div_words, as I don't know what it's
supposed to return on overflow.  For now, I trust the rest of the
system to give it numbers that will not cause any overflow...
 2000-11-21 23:32:38 +00:00
Richard Levitte
c799770060 Avoid getting warnings about unary - being used on unsigned integer. 2000-11-21 23:29:55 +00:00
Richard Levitte
baa257f1ed Remove two bn_wexpand() from BN_mul(), which is a step toward getting 
BN_mul() correctly constified, avoids two realloc()'s that aren't
really necessary and saves memory to boot.  This required a small
change in bn_mul_part_recursive() and the addition of variants of
bn_cmp_words(), bn_add_words() and bn_sub_words() that can take arrays
with differing sizes.

The test results show a performance that very closely matches the
original code from before my constification.  This may seem like a
very small win from a performance point of view, but if one remembers
that the variants of bn_cmp_words(), bn_add_words() and bn_sub_words()
are not at all optimized for the moment (and there's no corresponding
assembler code), and that their use may be just as non-optimal, I'm
pretty confident there are possibilities...

This code needs reviewing!
 2000-11-18 22:58:26 +00:00
Richard Levitte
e06cc57118 Remove a declaration for a function that does not exist. 2000-11-18 20:52:14 +00:00
Richard Levitte
0450d28759 Make the definition of bn_add_words() match the definition. 2000-11-18 20:49:02 +00:00
Richard Levitte
227385b719 Make sure BN_DIV2W is not defining when defining it, and remove the 
declarations of bn_add_part_words() and bn_sub_part_words() since they
do not exist.
 2000-11-17 12:01:55 +00:00
Bodo Möller
28fd5c60de Constify bn_dump1 implementation so that it matches the prototype 
in bn.h
 2000-11-17 08:36:10 +00:00
Richard Levitte
cbd48ba626 More constification of the BN library. 2000-11-16 22:43:32 +00:00
Richard Levitte
67d93e6f49 Make sure to print the BN counting (BN_COUNT) to stderr instead of 
stdout.  bc gets so confused by bean counts.
 2000-11-16 22:42:39 +00:00
Richard Levitte
afb83c45e6 Oops, when I clean, I should do it thoroughly. 2000-11-16 22:41:26 +00:00
Richard Levitte
43fcc1b096 I've checked again and again. There really is no need to expand a to 
4 times it's size when bn_sqr_recursive() won't look farther than the
original length.  Thereby, constification is no longer a problem.
 2000-11-16 21:35:41 +00:00
Ben Laurie
757e392d4e Make Rijndael work! Those long flights have some good points. 2000-11-12 02:13:38 +00:00
Bodo Möller
e1a8ac495b tmp2 is not used in BN_mod_mul_montgomery. 2000-11-09 16:39:01 +00:00
Bodo Möller
7f7b8d6871 BN_CTX-related fixes. 2000-11-08 10:05:34 +00:00
Bodo Möller
e0bf5c11ea Handle BN_copy failure after successful BN_new. 2000-11-07 09:39:51 +00:00