Commit | Line | Data |
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b085fd91 | 1 | /* -*-c-*- |
2 | * | |
b085fd91 | 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 { \ |
b67c17c3 MW |
40 | if (EC_ATINF(&(p))) \ |
41 | (d).x = (d).y = (d).z = MP_NEW; \ | |
42 | else { \ | |
43 | (d).x = MP_COPY((p).x); \ | |
44 | (d).y = MP_COPY((p).y); \ | |
45 | (d).z = (p).z ? MP_COPY((p).z) : MP_NEW; \ | |
46 | } \ | |
45c0fd36 | 47 | } while (0) |
41cb1beb | 48 | #define EXP_DROP(x) EC_DESTROY(&(x)) |
b085fd91 | 49 | |
41cb1beb | 50 | #define EXP_MUL(a, x) EC_ADD(c, &(a), &(a), &(x)) |
02d7884d | 51 | #define EXP_SQR(a) EC_DBL(c, &(a), &(a)) |
391faf42 | 52 | #define EXP_FIX(x) |
b085fd91 | 53 | |
54 | #define EXP_SETMUL(d, x, y) do { \ | |
41cb1beb | 55 | EC_CREATE(&(d)); \ |
56 | EC_ADD(c, &(d), &(x), &(y)); \ | |
b085fd91 | 57 | } while (0) |
58 | #define EXP_SETSQR(d, x) do { \ | |
41cb1beb | 59 | EC_CREATE(&(d)); \ |
60 | EC_DBL(c, &(d), &(x)); \ | |
b085fd91 | 61 | } while (0) |
62 | ||
63 | #include "exp.h" | |
64 | ||
65 | /*----- That's all, folks -------------------------------------------------*/ | |
66 | ||
67 | #ifdef __cplusplus | |
68 | } | |
69 | #endif | |
70 | ||
71 | #endif |