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