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1 | /* $Id$ */ | |
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 | ||
30 | typedef 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 | ||
43 | void acss_setkey(ACSS_KEY *, const unsigned char *, int, int); | |
44 | void acss_setsubkey(ACSS_KEY *, const unsigned char *); | |
45 | int acss(ACSS_KEY *, unsigned long, const unsigned char *, unsigned char *); | |
46 | ||
47 | #endif /* ifndef _ACSS_H_ */ |