view libtommath/bn_mp_addmod.c @ 429:ce14fab86732 channel-fix

propagate from branch 'au.asn.ucc.matt.dropbear' (head 6cb7793493d92968e09b5dea21d71ded5811d21f) to branch 'au.asn.ucc.matt.dropbear.channel-fix' (head 275bf5c6b71ca286c29733b9e38bac40eeb06a40)
author Matt Johnston <matt@ucc.asn.au>
date Mon, 12 Feb 2007 13:38:18 +0000
parents 5ff8218bcee9
children 60fc6476e044
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#include <tommath.h>
#ifdef BN_MP_ADDMOD_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://math.libtomcrypt.com
 */

/* d = a + b (mod c) */
int
mp_addmod (mp_int * a, mp_int * b, mp_int * c, mp_int * d)
{
  int     res;
  mp_int  t;

  if ((res = mp_init (&t)) != MP_OKAY) {
    return res;
  }

  if ((res = mp_add (a, b, &t)) != MP_OKAY) {
    mp_clear (&t);
    return res;
  }
  res = mp_mod (&t, c, d);
  mp_clear (&t);
  return res;
}
#endif

/* $Source: /cvs/libtom/libtommath/bn_mp_addmod.c,v $ */
/* $Revision: 1.3 $ */
/* $Date: 2006/03/31 14:18:44 $ */