34e4f738 |
1 | /* -*-c-*- |
2 | * |
3 | * $Id: group-exp.h,v 1.1 2004/04/01 12:50:09 mdw Exp $ |
4 | * |
5 | * Exponentiation operations for abstract groups |
6 | * |
7 | * (c) 2004 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: group-exp.h,v $ |
33 | * Revision 1.1 2004/04/01 12:50:09 mdw |
34 | * Add cyclic group abstraction, with test code. Separate off exponentation |
35 | * functions for better static linking. Fix a buttload of bugs on the way. |
36 | * Generally ensure that negative exponents do inversion correctly. Add |
37 | * table of standard prime-field subgroups. (Binary field subgroups are |
38 | * currently unimplemented but easy to add if anyone ever finds a good one.) |
39 | * |
40 | */ |
41 | |
42 | #ifndef CATACOMB_GROUP_EXP_H |
43 | #define CATACOMB_GROUP_EXP_H |
44 | |
45 | #ifdef __cplusplus |
46 | extern "C" { |
47 | #endif |
48 | |
49 | /*----- Exponentation definitions -----------------------------------------*/ |
50 | |
51 | #define EXP_TYPE ge * |
52 | |
53 | #define EXP_COPY(d, p) do { \ |
54 | (d) = G_CREATE(gg); \ |
55 | G_COPY(gg, (d), (p)); \ |
56 | } while (0) |
57 | #define EXP_DROP(x) G_DESTROY(gg, (x)) |
58 | |
59 | #define EXP_MUL(a, x) G_MUL(gg, (a), (a), (x)) |
60 | #define EXP_SQR(a) G_SQR(gg, (a), (a)); |
61 | #define EXP_FIX(x) |
62 | |
63 | #define EXP_SETMUL(d, x, y) do { \ |
64 | (d) = G_CREATE(gg); \ |
65 | G_MUL(gg, (d), (x), (y)); \ |
66 | } while (0) |
67 | #define EXP_SETSQR(d, x) do { \ |
68 | (d) = G_CREATE(gg); \ |
69 | G_SQR(gg, (d), (x)); \ |
70 | } while (0) |
71 | |
72 | #include "exp.h" |
73 | |
74 | /*----- That's all, folks -------------------------------------------------*/ |
75 | |
76 | #ifdef __cplusplus |
77 | } |
78 | #endif |
79 | |
80 | #endif |