acss.h revision 1305e95ba6ff9fa202d0818caf10405df4b0f648 
1/*	$Id: acss.h,v 1.2 2004/02/06 04:22:43 dtucker Exp $ */
2/*
3 * Copyright (c) 2004 The OpenBSD project
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18#ifndef _ACSS_H_
19#define _ACSS_H_
20
21/* 40bit key */
22#define ACSS_KEYSIZE		5
23
24/* modes of acss */
25#define ACSS_AUTHENTICATE	0
26#define ACSS_SESSIONKEY		1
27#define ACSS_TITLEKEY		2
28#define ACSS_DATA		3
29
30typedef struct acss_key_st {
31	unsigned int	lfsr17;		/* current state of lfsrs */
32	unsigned int	lfsr25;
33	unsigned int	lfsrsum;
34	unsigned char	seed[ACSS_KEYSIZE];
35	unsigned char	data[ACSS_KEYSIZE];
36	unsigned char	subkey[ACSS_KEYSIZE];
37	int		encrypt;	/* XXX make these bit flags? */
38	int		mode;
39	int		seeded;
40	int		subkey_avilable;
41} ACSS_KEY;
42
43void acss_setkey(ACSS_KEY *, const unsigned char *, int, int);
44void acss_setsubkey(ACSS_KEY *, const unsigned char *);
45int acss(ACSS_KEY *, unsigned long, const unsigned char *, unsigned char *);
46
47#endif /* ifndef _ACSS_H_ */
48