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1 | /* -*-c-*- |
2 | * |
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3 | * $Id: ec-exp.h,v 1.5 2004/04/03 03:32:05 mdw Exp $ |
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4 | * |
5 | * Exponentiation operations for elliptic curves |
6 | * |
7 | * (c) 2001 Straylight/Edgeware |
8 | */ |
9 | |
10 | /*----- Licensing notice --------------------------------------------------* |
11 | * |
12 | * This file is part of Catacomb. |
13 | * |
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. |
18 | * |
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. |
23 | * |
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, |
27 | * MA 02111-1307, USA. |
28 | */ |
29 | |
30 | /*----- Revision history --------------------------------------------------* |
31 | * |
32 | * $Log: ec-exp.h,v $ |
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33 | * Revision 1.5 2004/04/03 03:32:05 mdw |
34 | * General robustification. |
35 | * |
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36 | * Revision 1.4 2004/03/22 02:19:10 mdw |
37 | * Rationalise the sliding-window threshold. Drop guarantee that right |
38 | * arguments to EC @add@ are canonical, and fix up projective implementations |
39 | * to cope. |
40 | * |
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41 | * Revision 1.3 2004/03/21 22:52:06 mdw |
42 | * Merge and close elliptic curve branch. |
43 | * |
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44 | * Revision 1.2.4.1 2004/03/20 00:13:31 mdw |
45 | * Projective coordinates for prime curves |
46 | * |
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47 | * Revision 1.2 2003/05/15 23:25:59 mdw |
48 | * Make elliptic curve stuff build. |
49 | * |
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50 | * Revision 1.1 2002/01/13 13:48:44 mdw |
51 | * Further progress. |
52 | * |
53 | */ |
54 | |
55 | #ifndef CATACOMB_EC_EXP_H |
56 | #define CATACOMB_EC_EXP_H |
57 | |
58 | #ifdef __cplusplus |
59 | extern "C" { |
60 | #endif |
61 | |
62 | /*----- Exponentation definitions -----------------------------------------*/ |
63 | |
64 | #define EXP_TYPE ec |
65 | |
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66 | #define EXP_COPY(d, p) do { \ |
67 | (d).x = MP_COPY((p).x); \ |
68 | (d).y = MP_COPY((p).y); \ |
69 | (d).z = (p).z ? MP_COPY((p).z) : MP_NEW; \ |
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70 | } while (0) |
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71 | #define EXP_DROP(x) EC_DESTROY(&(x)) |
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72 | |
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73 | #define EXP_MUL(a, x) EC_ADD(c, &(a), &(a), &(x)) |
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74 | #define EXP_SQR(a) EC_DBL(c, &(a), &(a)) |
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75 | #define EXP_FIX(x) |
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76 | |
77 | #define EXP_SETMUL(d, x, y) do { \ |
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78 | EC_CREATE(&(d)); \ |
79 | EC_ADD(c, &(d), &(x), &(y)); \ |
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80 | } while (0) |
81 | #define EXP_SETSQR(d, x) do { \ |
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82 | EC_CREATE(&(d)); \ |
83 | EC_DBL(c, &(d), &(x)); \ |
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84 | } while (0) |
85 | |
86 | #include "exp.h" |
87 | |
88 | /*----- That's all, folks -------------------------------------------------*/ |
89 | |
90 | #ifdef __cplusplus |
91 | } |
92 | #endif |
93 | |
94 | #endif |