diff options
| author | Steffen Jaeckel <s_jaeckel@gmx.de> | 2019-09-16 15:50:38 +0200 |
|---|---|---|
| committer | Matt Johnston <matt@ucc.asn.au> | 2019-09-16 21:50:38 +0800 |
| commit | 615ed4e46a52b6bfe0bfc581b8c2fbcc6cc488d1 (patch) | |
| tree | 12b2ba29ae4c42fc65d64d43968c5d03ab3f4452 /libtommath/bn_mp_reduce_2k.c | |
| parent | fa116e983b4931010e1082dd5c8bf38bbc77718c (diff) | |
update ltm to 1.1.0 and enable FIPS 186.4 compliant key-generation (#79)
* make key-generation compliant to FIPS 186.4
* fix includes in tommath_class.h
* update fuzzcorpus instead of error-out
* fixup fuzzing make-targets
* update Makefile.in
* apply necessary patches to ltm sources
* clean-up not required ltm files
* update to vanilla ltm 1.1.0
this already only contains the required files
* remove set/get double
Diffstat (limited to 'libtommath/bn_mp_reduce_2k.c')
| -rw-r--r-- | libtommath/bn_mp_reduce_2k.c | 27 |
1 files changed, 12 insertions, 15 deletions
diff --git a/libtommath/bn_mp_reduce_2k.c b/libtommath/bn_mp_reduce_2k.c index 6bc96d1..8f36b11 100644 --- a/libtommath/bn_mp_reduce_2k.c +++ b/libtommath/bn_mp_reduce_2k.c @@ -1,4 +1,4 @@ -#include <tommath_private.h> +#include "tommath_private.h" #ifdef BN_MP_REDUCE_2K_C /* LibTomMath, multiple-precision integer library -- Tom St Denis * @@ -9,14 +9,11 @@ * Michael Fromberger but has been written from scratch with * additional optimizations in place. * - * The library is free for all purposes without any express - * guarantee it works. - * - * Tom St Denis, tstdenis82@gmail.com, http://libtom.org + * SPDX-License-Identifier: Unlicense */ /* reduces a modulo n where n is of the form 2**p - d */ -int mp_reduce_2k(mp_int *a, mp_int *n, mp_digit d) +int mp_reduce_2k(mp_int *a, const mp_int *n, mp_digit d) { mp_int q; int p, res; @@ -29,35 +26,35 @@ int mp_reduce_2k(mp_int *a, mp_int *n, mp_digit d) top: /* q = a/2**p, a = a mod 2**p */ if ((res = mp_div_2d(a, p, &q, a)) != MP_OKAY) { - goto ERR; + goto LBL_ERR; } - if (d != 1) { + if (d != 1u) { /* q = q * d */ if ((res = mp_mul_d(&q, d, &q)) != MP_OKAY) { - goto ERR; + goto LBL_ERR; } } /* a = a + q */ if ((res = s_mp_add(a, &q, a)) != MP_OKAY) { - goto ERR; + goto LBL_ERR; } if (mp_cmp_mag(a, n) != MP_LT) { if ((res = s_mp_sub(a, n, a)) != MP_OKAY) { - goto ERR; + goto LBL_ERR; } goto top; } -ERR: +LBL_ERR: mp_clear(&q); return res; } #endif -/* ref: $Format:%D$ */ -/* git commit: $Format:%H$ */ -/* commit time: $Format:%ai$ */ +/* ref: HEAD -> master, tag: v1.1.0 */ +/* git commit: 08549ad6bc8b0cede0b357a9c341c5c6473a9c55 */ +/* commit time: 2019-01-28 20:32:32 +0100 */ |