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1 | /* -*-c-*- |
2 | * |
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3 | * $Id: ectab.h,v 1.4 2004/04/08 01:36:15 mdw Exp $ |
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4 | * |
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5 | * Table of standard elliptic curves |
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6 | * |
7 | * (c) 2004 Straylight/Edgeware |
8 | */ |
9 | |
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10 | /*----- Licensing notice --------------------------------------------------* |
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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. |
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18 | * |
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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. |
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23 | * |
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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 | |
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30 | #ifndef CATACOMB_ECTAB_H |
31 | #define CATACOMB_ECTAB_H |
32 | |
33 | #ifdef __cplusplus |
34 | extern "C" { |
35 | #endif |
36 | |
37 | /*----- Header files ------------------------------------------------------*/ |
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38 | |
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39 | #include "ec.h" |
40 | |
41 | /*----- Data structures ---------------------------------------------------*/ |
42 | |
43 | typedef struct ecdata { |
44 | unsigned ftag; /* The kind of curve this is */ |
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45 | mp p, beta; /* Modulus, and conversion magic */ |
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46 | mp a, b; /* Elliptic curve parameters */ |
47 | mp r; /* Order of common point %$g$% */ |
48 | mp h; /* Cofactor %$h = \#E/r$% */ |
49 | mp gx, gy; /* Common point */ |
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50 | } ecdata; |
51 | |
52 | enum { |
53 | FTAG_PRIME, /* Prime but not nice */ |
54 | FTAG_NICEPRIME, /* Nice prime field */ |
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55 | FTAG_BINPOLY, /* Binary field, poly basis */ |
56 | FTAG_BINNORM /* Binary field, normal basis */ |
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57 | }; |
58 | |
59 | typedef struct ecentry { |
60 | const char *name; |
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61 | ecdata *data; |
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62 | } ecentry; |
63 | |
64 | /*----- Global variables --------------------------------------------------*/ |
65 | |
66 | extern const ecentry ectab[]; |
67 | |
68 | /*----- That's all, folks -------------------------------------------------*/ |
69 | |
70 | #ifdef __cplusplus |
71 | } |
72 | #endif |
73 | |
74 | #endif |