Mercurial > dropbear
view libtommath/bn_mp_shrink.c @ 1702:8f93f37c01de
Allow DH to be completely disabled (#97)
Reduces binary size by ~2kB by default and by 21kB with no other
libtommath functions users, ex. with curve25519 kex and ed25519
key only.
author | Vladislav Grishenko <themiron@users.noreply.github.com> |
---|---|
date | Thu, 28 May 2020 20:01:48 +0500 |
parents | 1051e4eea25a |
children |
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#include "tommath_private.h" #ifdef BN_MP_SHRINK_C /* LibTomMath, multiple-precision integer library -- Tom St Denis */ /* SPDX-License-Identifier: Unlicense */ /* shrink a bignum */ mp_err mp_shrink(mp_int *a) { mp_digit *tmp; int alloc = MP_MAX(MP_MIN_PREC, a->used); if (a->alloc != alloc) { if ((tmp = (mp_digit *) MP_REALLOC(a->dp, (size_t)a->alloc * sizeof(mp_digit), (size_t)alloc * sizeof(mp_digit))) == NULL) { return MP_MEM; } a->dp = tmp; a->alloc = alloc; } return MP_OKAY; } #endif