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comparison libtommath/bn_mp_addmod.c @ 391:00fcf5045160

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propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head c1db4398d56c56c6d06ae1e20c1e0d04dbb598ed) to branch 'au.asn.ucc.matt.dropbear' (head d26d5eb2837f46b56a33fb0e7573aa0201abd4d5)
author Matt Johnston <matt@ucc.asn.au>
date Thu, 11 Jan 2007 04:29:08 +0000
parents 5ff8218bcee9
children 60fc6476e044
comparison
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390:d8e44bef7917 391:00fcf5045160
1 #include <tommath.h>
2 #ifdef BN_MP_ADDMOD_C
3 /* LibTomMath, multiple-precision integer library -- Tom St Denis
4 *
5 * LibTomMath is a library that provides multiple-precision
6 * integer arithmetic as well as number theoretic functionality.
7 *
8 * The library was designed directly after the MPI library by
9 * Michael Fromberger but has been written from scratch with
10 * additional optimizations in place.
11 *
12 * The library is free for all purposes without any express
13 * guarantee it works.
14 *
15 * Tom St Denis, [email protected], http://math.libtomcrypt.com
16 */
17
18 /* d = a + b (mod c) */
19 int
20 mp_addmod (mp_int * a, mp_int * b, mp_int * c, mp_int * d)
21 {
22 int res;
23 mp_int t;
24
25 if ((res = mp_init (&t)) != MP_OKAY) {
26 return res;
27 }
28
29 if ((res = mp_add (a, b, &t)) != MP_OKAY) {
30 mp_clear (&t);
31 return res;
32 }
33 res = mp_mod (&t, c, d);
34 mp_clear (&t);
35 return res;
36 }
37 #endif
38
39 /* $Source: /cvs/libtom/libtommath/bn_mp_addmod.c,v $ */
40 /* $Revision: 1.3 $ */
41 /* $Date: 2006/03/31 14:18:44 $ */