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comparison libtommath/bn_mp_exptmod.c @ 1436:60fc6476e044

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Update to libtommath v1.0
author Matt Johnston <matt@ucc.asn.au>
date Sat, 24 Jun 2017 22:37:14 +0800
parents 5ff8218bcee9
children 8bba51a55704
comparison
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1435:f849a5ca2efc 1436:60fc6476e044
1 #include <tommath.h> 1 #include <tommath_private.h>
2 #ifdef BN_MP_EXPTMOD_C 2 #ifdef BN_MP_EXPTMOD_C
3 /* LibTomMath, multiple-precision integer library -- Tom St Denis 3 /* LibTomMath, multiple-precision integer library -- Tom St Denis
4 * 4 *
5 * LibTomMath is a library that provides multiple-precision 5 * LibTomMath is a library that provides multiple-precision
6 * integer arithmetic as well as number theoretic functionality. 6 * integer arithmetic as well as number theoretic functionality.
10 * additional optimizations in place. 10 * additional optimizations in place.
11 * 11 *
12 * The library is free for all purposes without any express 12 * The library is free for all purposes without any express
13 * guarantee it works. 13 * guarantee it works.
14 * 14 *
15 * Tom St Denis, [email protected], http://math.libtomcrypt.com 15 * Tom St Denis, [email protected], http://libtom.org
16 */ 16 */
17 17
18 18
19 /* this is a shell function that calls either the normal or Montgomery 19 /* this is a shell function that calls either the normal or Montgomery
20 * exptmod functions. Originally the call to the montgomery code was 20 * exptmod functions. Originally the call to the montgomery code was
87 } 87 }
88 #endif 88 #endif
89 89
90 /* if the modulus is odd or dr != 0 use the montgomery method */ 90 /* if the modulus is odd or dr != 0 use the montgomery method */
91 #ifdef BN_MP_EXPTMOD_FAST_C 91 #ifdef BN_MP_EXPTMOD_FAST_C
92 if (mp_isodd (P) == 1 || dr != 0) { 92 if ((mp_isodd (P) == MP_YES) || (dr != 0)) {
93 return mp_exptmod_fast (G, X, P, Y, dr); 93 return mp_exptmod_fast (G, X, P, Y, dr);
94 } else { 94 } else {
95 #endif 95 #endif
96 #ifdef BN_S_MP_EXPTMOD_C 96 #ifdef BN_S_MP_EXPTMOD_C
97 /* otherwise use the generic Barrett reduction technique */ 97 /* otherwise use the generic Barrett reduction technique */
105 #endif 105 #endif
106 } 106 }
107 107
108 #endif 108 #endif
109 109
110 /* $Source: /cvs/libtom/libtommath/bn_mp_exptmod.c,v $ */ 110 /* $Source$ */
111 /* $Revision: 1.4 $ */ 111 /* $Revision$ */
112 /* $Date: 2006/03/31 14:18:44 $ */ 112 /* $Date$ */