chiark / gitweb /
math/f25519.[ch]: More field operations.
[catacomb] / math / ec-exp.h
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b085fd91 1/* -*-c-*-
b085fd91 2 *
3 * Exponentiation operations for elliptic curves
4 *
5 * (c) 2001 Straylight/Edgeware
6 */
7
45c0fd36 8/*----- Licensing notice --------------------------------------------------*
b085fd91 9 *
10 * This file is part of Catacomb.
11 *
12 * Catacomb is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU Library General Public License as
14 * published by the Free Software Foundation; either version 2 of the
15 * License, or (at your option) any later version.
45c0fd36 16 *
b085fd91 17 * Catacomb is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU Library General Public License for more details.
45c0fd36 21 *
b085fd91 22 * You should have received a copy of the GNU Library General Public
23 * License along with Catacomb; if not, write to the Free
24 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
25 * MA 02111-1307, USA.
26 */
27
b085fd91 28#ifndef CATACOMB_EC_EXP_H
29#define CATACOMB_EC_EXP_H
30
31#ifdef __cplusplus
32 extern "C" {
33#endif
34
35/*----- Exponentation definitions -----------------------------------------*/
36
37#define EXP_TYPE ec
38
41cb1beb 39#define EXP_COPY(d, p) do { \
40 (d).x = MP_COPY((p).x); \
41 (d).y = MP_COPY((p).y); \
42 (d).z = (p).z ? MP_COPY((p).z) : MP_NEW; \
45c0fd36 43} while (0)
41cb1beb 44#define EXP_DROP(x) EC_DESTROY(&(x))
b085fd91 45
41cb1beb 46#define EXP_MUL(a, x) EC_ADD(c, &(a), &(a), &(x))
02d7884d 47#define EXP_SQR(a) EC_DBL(c, &(a), &(a))
391faf42 48#define EXP_FIX(x)
b085fd91 49
50#define EXP_SETMUL(d, x, y) do { \
41cb1beb 51 EC_CREATE(&(d)); \
52 EC_ADD(c, &(d), &(x), &(y)); \
b085fd91 53} while (0)
54#define EXP_SETSQR(d, x) do { \
41cb1beb 55 EC_CREATE(&(d)); \
56 EC_DBL(c, &(d), &(x)); \
b085fd91 57} while (0)
58
59#include "exp.h"
60
61/*----- That's all, folks -------------------------------------------------*/
62
63#ifdef __cplusplus
64 }
65#endif
66
67#endif