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view libtommath/bn_mp_init_copy.c @ 1702:8f93f37c01de

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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_INIT_COPY_C
/* LibTomMath, multiple-precision integer library -- Tom St Denis */
/* SPDX-License-Identifier: Unlicense */

/* creates "a" then copies b into it */
mp_err mp_init_copy(mp_int *a, const mp_int *b)
{
   mp_err     err;

   if ((err = mp_init_size(a, b->used)) != MP_OKAY) {
      return err;
   }

   if ((err = mp_copy(b, a)) != MP_OKAY) {
      mp_clear(a);
   }

   return err;
}
#endif