Mercurial > dropbear

comparison bn_mp_xor.c @ 142:d29b64170cf0 libtommath-orig

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
import of libtommath 0.32
author Matt Johnston <matt@ucc.asn.au>
date Sun, 19 Dec 2004 11:33:56 +0000
parents 86e0b50a9b58
children d8254fc979e9
comparison
equal deleted inserted replaced
19:e1037a1e12e7 142:d29b64170cf0
1 #include <tommath.h>
2 #ifdef BN_MP_XOR_C
1 /* LibTomMath, multiple-precision integer library -- Tom St Denis 3 /* LibTomMath, multiple-precision integer library -- Tom St Denis
2 * 4 *
3 * LibTomMath is a library that provides multiple-precision 5 * LibTomMath is a library that provides multiple-precision
4 * integer arithmetic as well as number theoretic functionality. 6 * integer arithmetic as well as number theoretic functionality.
5 * 7 *
10 * The library is free for all purposes without any express 12 * The library is free for all purposes without any express
11 * guarantee it works. 13 * guarantee it works.
12 * 14 *
13 * Tom St Denis, [email protected], http://math.libtomcrypt.org 15 * Tom St Denis, [email protected], http://math.libtomcrypt.org
14 */ 16 */
15 #include <tommath.h>
16 17
17 /* XOR two ints together */ 18 /* XOR two ints together */
18 int 19 int
19 mp_xor (mp_int * a, mp_int * b, mp_int * c) 20 mp_xor (mp_int * a, mp_int * b, mp_int * c)
20 { 21 {
34 px = a->used; 35 px = a->used;
35 x = a; 36 x = a;
36 } 37 }
37 38
38 for (ix = 0; ix < px; ix++) { 39 for (ix = 0; ix < px; ix++) {
39 t.dp[ix] ^= x->dp[ix]; 40
40 } 41 }
41 mp_clamp (&t); 42 mp_clamp (&t);
42 mp_exch (c, &t); 43 mp_exch (c, &t);
43 mp_clear (&t); 44 mp_clear (&t);
44 return MP_OKAY; 45 return MP_OKAY;
45 } 46 }
47 #endif