Mercurial > dropbear
diff libtommath/bn_mp_sqrmod.c @ 1739:13d834efc376 fuzz
merge from main
author | Matt Johnston <matt@ucc.asn.au> |
---|---|
date | Thu, 15 Oct 2020 19:55:15 +0800 |
parents | 1051e4eea25a |
children |
line wrap: on
line diff
--- a/libtommath/bn_mp_sqrmod.c Wed Feb 28 22:11:39 2018 +0800 +++ b/libtommath/bn_mp_sqrmod.c Thu Oct 15 19:55:15 2020 +0800 @@ -1,41 +1,25 @@ -#include <tommath_private.h> +#include "tommath_private.h" #ifdef BN_MP_SQRMOD_C -/* LibTomMath, multiple-precision integer library -- Tom St Denis - * - * LibTomMath is a library that provides multiple-precision - * integer arithmetic as well as number theoretic functionality. - * - * The library was designed directly after the MPI library by - * 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, [email protected], http://libtom.org - */ +/* LibTomMath, multiple-precision integer library -- Tom St Denis */ +/* SPDX-License-Identifier: Unlicense */ /* c = a * a (mod b) */ -int -mp_sqrmod (mp_int * a, mp_int * b, mp_int * c) +mp_err mp_sqrmod(const mp_int *a, const mp_int *b, mp_int *c) { - int res; - mp_int t; + mp_err err; + mp_int t; + + if ((err = mp_init(&t)) != MP_OKAY) { + return err; + } - if ((res = mp_init (&t)) != MP_OKAY) { - return res; - } + if ((err = mp_sqr(a, &t)) != MP_OKAY) { + goto LBL_ERR; + } + err = mp_mod(&t, b, c); - if ((res = mp_sqr (a, &t)) != MP_OKAY) { - mp_clear (&t); - return res; - } - res = mp_mod (&t, b, c); - mp_clear (&t); - return res; +LBL_ERR: + mp_clear(&t); + return err; } #endif - -/* ref: $Format:%D$ */ -/* git commit: $Format:%H$ */ -/* commit time: $Format:%ai$ */