Allow explicit group parameters for DH groups.
[u/mdw/catacomb] / group-file.c
CommitLineData
34e4f738 1/* -*-c-*-
2 *
3 * $Id: group-file.c,v 1.1 2004/04/01 12:50:09 mdw Exp $
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 $
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/*----- Header files ------------------------------------------------------*/
43
44#include "group.h"
45
46/*----- Main code ---------------------------------------------------------*/
47
48/* --- @group_readfile@ --- *
49 *
50 * Arguments: @group *g@ = an abstract group
51 * @ge *d@ = destination group element
52 * @FILE *fp@ = the file to read from
53 *
54 * Returns: Zero on success, nonzero on failure.
55 *
56 * Use: Parses a group element from a file.
57 */
58
59int group_readfile(group *g, ge *d, FILE *fp)
60 { return (G_READ(g, d, &mptext_fileops, fp)); }
61
62/* --- @group_writefile@ --- *
63 *
64 * Arguments: @group *g@ = an abstract group
65 * @ge *x@ = a group element
66 * @FILE *fp@ = the file to write on
67 *
68 * Returns: Zero on success, nonzero on failure.
69 *
70 * Use: Writes a group element to a file.
71 */
72
73int group_writefile(group *g, ge *x, FILE *fp)
74 { return (G_WRITE(g, x, &mptext_stringops, fp)); }
75
76/*----- That's all, folks -------------------------------------------------*/