3 * $Id: ec-exp.h,v 1.6 2004/04/08 01:36:15 mdw Exp $
5 * Exponentiation operations for elliptic curves
7 * (c) 2001 Straylight/Edgeware
10 /*----- Licensing notice --------------------------------------------------*
12 * This file is part of Catacomb.
14 * Catacomb is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU Library General Public License as
16 * published by the Free Software Foundation; either version 2 of the
17 * License, or (at your option) any later version.
19 * Catacomb is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU Library General Public License for more details.
24 * You should have received a copy of the GNU Library General Public
25 * License along with Catacomb; if not, write to the Free
26 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
30 #ifndef CATACOMB_EC_EXP_H
31 #define CATACOMB_EC_EXP_H
37 /*----- Exponentation definitions -----------------------------------------*/
41 #define EXP_COPY(d, p) do { \
42 (d).x = MP_COPY((p).x); \
43 (d).y = MP_COPY((p).y); \
44 (d).z = (p).z ? MP_COPY((p).z) : MP_NEW; \
46 #define EXP_DROP(x) EC_DESTROY(&(x))
48 #define EXP_MUL(a, x) EC_ADD(c, &(a), &(a), &(x))
49 #define EXP_SQR(a) EC_DBL(c, &(a), &(a))
52 #define EXP_SETMUL(d, x, y) do { \
54 EC_ADD(c, &(d), &(x), &(y)); \
56 #define EXP_SETSQR(d, x) do { \
58 EC_DBL(c, &(d), &(x)); \
63 /*----- That's all, folks -------------------------------------------------*/