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Author SHA1 Message Date
Steffen Jaeckel
fede300ee8 fp_prime_random_ex: use parameter 't' 2014-10-13 16:46:10 +02:00
Steffen Jaeckel
ce72d69438 add macro FP_PRIME_SIZE 2014-10-13 16:45:34 +02:00
Steffen Jaeckel
4673d82793 improve makefiles 
shared makefile now uses libtool
update gitignore according
remove 'timing' target in shared makefile
add dependency of HEADERS to OBJECTS for both makefiles
 2014-10-13 16:44:58 +02:00
Giovanni Bajo
08484a1020 Avoid always generating 0x80 as MSB in primes. 
When we ask to generate a prime whose size is a multiple of 8,
the code wrongly computes the mask as 0x00 instead of 0xFF, so the
generated prime always has the MSB set to 0x80 (the highest bit is OR'ed
later in the code).
 2014-10-13 13:40:57 +02:00
Steffen Jaeckel
86ba42797a update makefiles 2014-10-13 13:40:41 +02:00
Steffen Jaeckel
7a38e49b8e add fp_isprime_ex() 
fp_isprime() is now only a wrapper function to fp_isprime_ex()
 2014-10-13 13:40:36 +02:00
Steffen Jaeckel
f7b194f741 minor changes, trim trailing spaces 2014-10-13 13:39:30 +02:00
Steffen Jaeckel
3a80f80039 deterministic build of tfm.pdf 2014-10-13 12:32:25 +02:00
Steffen Jaeckel
4e0e2c0f90 update changes 2014-10-13 12:24:45 +02:00
Steffen Jaeckel
b0509acce9 Merge branch 'feature/rand' 2014-08-28 02:58:22 +02:00
Steffen Jaeckel
97248ae23e update makefiles 2014-08-14 21:19:14 +02:00
Steffen Jaeckel
ec7f25200f add fp_rand() 
it's a port of the function in libtommath
 2014-08-14 21:19:14 +02:00
Steffen Jaeckel
56438df4cf test/mtest/stest: improve a bit 
fix compiler warnings
make internal buffer size dependant on its possible size
fix return values
 2014-08-14 21:18:23 +02:00
Steffen Jaeckel
0b1ad14d7b makefile: rework a bit 2014-08-14 21:17:11 +02:00
Steffen Jaeckel
03334b30b4 mont: make INNERMUL register clobber list equal to the 64bit version 2014-08-14 21:17:11 +02:00
Steffen Jaeckel
14bb3e83ca gen.pl: update to current directory structure 2014-08-14 21:17:11 +02:00
Steffen Jaeckel
ec6c224b09 fix sqr_comba compiler warnings 2014-08-11 17:54:09 +02:00
Steffen Jaeckel
72fe8e48ba montgomery reduce: change #ifdef 
as INNERMUL8 is only defined where it is available, simply check if it's
defined and don't check again for the arch
 2014-07-20 16:08:35 +02:00
Steffen Jaeckel
06ef0be491 tfm.h: add missing prototype of fp_radix_size() 2014-06-21 13:24:22 +02:00
Steffen Jaeckel
7882b0370d ed1a1e90e9 was not only a x86-64 problem 2014-06-21 13:24:03 +02:00
Steffen Jaeckel
60cf64919f fp_read_radix: port modifications from libtommath 2014-06-15 18:35:31 +02:00
Steffen Jaeckel
74df3d9970 demo/stest: print ident string 2014-06-15 18:34:15 +02:00
Steffen Jaeckel
1e129bf61e demo/test: enable montogomery and prime tests per default 2014-06-14 18:17:47 +02:00
Steffen Jaeckel
06e1cd7216 fix compiler warning 2014-06-14 17:39:18 +02:00
Steffen Jaeckel
c6b1b8e2f1 fix ulong64 typedef that led to broken builds for several platforms 
x86_64-w64-mingw32 and 32Bit mode on 64Bit system

x86_64-w64-mingw32-gcc
'gcc -m32'
'gcc -mx32'
 2014-06-14 17:39:10 +02:00
Steffen Jaeckel
9671aa83e1 update makefile to be able to define a target platform prefix 2014-06-14 17:27:51 +02:00
Steffen Jaeckel
cbb1821bb9 don't require mtest when compiling test 2014-06-14 17:21:03 +02:00
Steffen Jaeckel
c81aac2674 demo/test: fix some compiler warnings 2014-06-12 19:38:15 +02:00
Steffen Jaeckel
019beee1c7 update makefiles 2014-06-12 18:20:38 +02:00
Steffen Jaeckel
ed1a1e90e9 fix clobber list for x86-64 assembler 2014-06-12 18:20:32 +02:00
Steffen Jaeckel
be2ca4880d Regenerate sqr comba files 2014-06-12 18:20:11 +02:00
Steffen Jaeckel
bdeafda752 Regenerate mul comba files 2014-06-12 18:19:53 +02:00
Steffen Jaeckel
3cabe12a21 mul generator: update preamble not to compile the code if it's not required 2014-06-12 18:08:34 +02:00
Steffen Jaeckel
8c8d763389 sqr generator: update preamble not to compile the code if it's not required 2014-06-12 18:08:10 +02:00
Steffen Jaeckel
2d5b8206fa also patch fp_mul() as proposed by tom on the ML [1] 
[1] https://groups.google.com/forum/#!topic/libtom/MdbS1vcLhCU
 2014-06-12 18:06:26 +02:00
Steffen Jaeckel
a7804acf42 implement 50f587c36f as proposed by tom 2014-06-12 18:04:03 +02:00
Steffen Jaeckel
e8163eb74a fixup 3f7a1dca3b 2014-06-12 18:01:58 +02:00
Steffen Jaeckel
82aeb1d824 change DIGIT_BIT define to be able to test e.g. FP_SIZE in a macro 2014-06-12 17:59:22 +02:00
Steffen Jaeckel
540e3ecbc1 Realign mult generators with existing files in repo. 
NB: fp_mul_comba32() is hand-optimized and has to be hand-crafted after
re-generation
 2014-06-12 17:40:58 +02:00
Steffen Jaeckel
39b18f774c fix compiler warnings 2014-06-12 17:36:49 +02:00
Steffen Jaeckel
86e7c59ff4 trim trailing spaces/clean-up 2014-06-12 17:35:54 +02:00
Steffen Jaeckel
bea9b1cc22 Merge remote-tracking branch 'rasky/bugfix_sqr_bufferoverflow' 2014-06-12 11:31:39 +02:00
Steffen Jaeckel
7993b1b66c regenerate fp_sqr_comba_small_set.c 2014-06-12 11:00:30 +02:00
Steffen Jaeckel
6673bd99ce minor fixes to really reproduce original files 2014-06-12 10:58:54 +02:00
Steffen Jaeckel
f8227a0dd9 trim trailing spaces 2014-06-12 10:58:39 +02:00
Steffen Jaeckel
f5b5bc09fb Revert "Bugfix: clear the exceeding destination digits." 
This reverts commit 50f587c36f.
 2014-06-12 10:50:19 +02:00
Steffen Jaeckel
7d003805ad Revert "Regenerate sqr comba files with bugfix" 
This reverts commit ab4374299c.
 2014-06-12 10:50:03 +02:00
Steffen Jaeckel
bfa4582842 Merge pull request #2 from rasky/bugfix_sqr_destdigits 
Bugfix sqr destdigits, c.f. 50f587c36f for further explanation
 2011-09-21 03:31:20 -07:00
Giovanni Bajo
3f7a1dca3b Fix for buffer overflows in fp_mul. 2011-09-20 12:06:44 +02:00
Giovanni Bajo
c32affe350 Bugfix: fix buffer overflow with comba sqr 
The comba sqr code does not check the maximum bounds of fp_int; eg:
if you invoke fp_sqr_comba_20, it will write 40 digits to the
destination even if FP_SIZE < 40. This is correct for achieving high
speeds, but it means that it is the caller's responsibility to check for
such overflows.

fp_sqr.c only checks for numeric overflows (a->used * 2 >= FP_SIZE)
though. This means that if you call fp_sqr() with a small number (say
1), and your FP_SIZE is 10, and you have enabled a fp_sqr_comba_8, it
will overflow your buffer by writing 16 digits.

Since the exact subset of active comba multipliers/sqrs are up to the user
(in tfm.h), we fix the code never to invoke them if they can cause
overflows.
 2011-09-20 12:06:44 +02:00