34e4f738 |
1 | /* -*-c-*- |
2 | * |
0f3faccd |
3 | * $Id: group-file.c,v 1.2 2004/04/04 19:04:11 mdw Exp $ |
34e4f738 |
4 | * |
5 | * File I/O for group elements |
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-file.c,v $ |
0f3faccd |
33 | * Revision 1.2 2004/04/04 19:04:11 mdw |
34 | * Raw I/O of elliptic curve points and group elements. |
35 | * |
34e4f738 |
36 | * Revision 1.1 2004/04/01 12:50:09 mdw |
37 | * Add cyclic group abstraction, with test code. Separate off exponentation |
38 | * functions for better static linking. Fix a buttload of bugs on the way. |
39 | * Generally ensure that negative exponents do inversion correctly. Add |
40 | * table of standard prime-field subgroups. (Binary field subgroups are |
41 | * currently unimplemented but easy to add if anyone ever finds a good one.) |
42 | * |
43 | */ |
44 | |
45 | /*----- Header files ------------------------------------------------------*/ |
46 | |
47 | #include "group.h" |
48 | |
49 | /*----- Main code ---------------------------------------------------------*/ |
50 | |
51 | /* --- @group_readfile@ --- * |
52 | * |
53 | * Arguments: @group *g@ = an abstract group |
54 | * @ge *d@ = destination group element |
55 | * @FILE *fp@ = the file to read from |
56 | * |
57 | * Returns: Zero on success, nonzero on failure. |
58 | * |
59 | * Use: Parses a group element from a file. |
60 | */ |
61 | |
62 | int group_readfile(group *g, ge *d, FILE *fp) |
63 | { return (G_READ(g, d, &mptext_fileops, fp)); } |
64 | |
65 | /* --- @group_writefile@ --- * |
66 | * |
67 | * Arguments: @group *g@ = an abstract group |
68 | * @ge *x@ = a group element |
69 | * @FILE *fp@ = the file to write on |
70 | * |
71 | * Returns: Zero on success, nonzero on failure. |
72 | * |
73 | * Use: Writes a group element to a file. |
74 | */ |
75 | |
76 | int group_writefile(group *g, ge *x, FILE *fp) |
0f3faccd |
77 | { return (G_WRITE(g, x, &mptext_fileops, fp)); } |
34e4f738 |
78 | |
79 | /*----- That's all, folks -------------------------------------------------*/ |