| 1 | /* -*-c-*- |
| 2 | * |
| 3 | * Exponentiation operations for elliptic curves |
| 4 | * |
| 5 | * (c) 2001 Straylight/Edgeware |
| 6 | */ |
| 7 | |
| 8 | /*----- Licensing notice --------------------------------------------------* |
| 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. |
| 16 | * |
| 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. |
| 21 | * |
| 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 | |
| 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 | |
| 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; \ |
| 43 | } while (0) |
| 44 | #define EXP_DROP(x) EC_DESTROY(&(x)) |
| 45 | |
| 46 | #define EXP_MUL(a, x) EC_ADD(c, &(a), &(a), &(x)) |
| 47 | #define EXP_SQR(a) EC_DBL(c, &(a), &(a)) |
| 48 | #define EXP_FIX(x) |
| 49 | |
| 50 | #define EXP_SETMUL(d, x, y) do { \ |
| 51 | EC_CREATE(&(d)); \ |
| 52 | EC_ADD(c, &(d), &(x), &(y)); \ |
| 53 | } while (0) |
| 54 | #define EXP_SETSQR(d, x) do { \ |
| 55 | EC_CREATE(&(d)); \ |
| 56 | EC_DBL(c, &(d), &(x)); \ |
| 57 | } while (0) |
| 58 | |
| 59 | #include "exp.h" |
| 60 | |
| 61 | /*----- That's all, folks -------------------------------------------------*/ |
| 62 | |
| 63 | #ifdef __cplusplus |
| 64 | } |
| 65 | #endif |
| 66 | |
| 67 | #endif |