f7ea7527 |
1 | /* -*-c-*- |
2 | * |
3 | * $Id: mpbarrett-exp.h,v 1.1 2001/06/16 12:58:12 mdw Exp $ |
4 | * |
5 | * Exponentiation operations for Barrett reduction |
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: mpbarrett-exp.h,v $ |
33 | * Revision 1.1 2001/06/16 12:58:12 mdw |
34 | * Parameters for generic exponentiation. |
35 | * |
36 | */ |
37 | |
38 | #ifndef CATACOMB_MPBARRETT_EXP_H |
39 | #define CATACOMB_MPBARRETT_EXP_H |
40 | |
41 | #ifdef __cplusplus |
42 | extern "C" { |
43 | #endif |
44 | |
45 | /*----- Exponentation definitions -----------------------------------------*/ |
46 | |
47 | #define EXP_TYPE mp * |
48 | |
49 | #define EXP_COPY(d, x) d = MP_COPY(x) |
50 | #define EXP_DROP(x) MP_DROP(x) |
51 | |
52 | #define EXP_MUL(a, x) do { \ |
53 | mp *t = mp_mul(spare, a, x); \ |
54 | spare = a; \ |
55 | a = mpbarrett_reduce(mb, t, t); \ |
56 | } while (0) |
57 | |
58 | #define EXP_SQR(a) do { \ |
59 | mp *t = mp_sqr(spare, a); \ |
60 | spare = a; \ |
61 | a = mpbarrett_reduce(mb, t, t); \ |
62 | } while (0) |
63 | |
64 | #define EXP_SETMUL(d, x, y) do { \ |
65 | d = mp_mul(MP_NEW, x, y); \ |
66 | d = mpbarrett_reduce(mb, d, d); \ |
67 | } while (0) |
68 | |
69 | #define EXP_SETSQR(d, x) do { \ |
70 | d = mp_sqr(MP_NEW, x); \ |
71 | d = mpbarrett_reduce(mb, d, d); \ |
72 | } while (0) |
73 | |
74 | #include "exp.h" |
75 | |
76 | /*----- That's all, folks -------------------------------------------------*/ |
77 | |
78 | #ifdef __cplusplus |
79 | } |
80 | #endif |
81 | |
82 | #endif |