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 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_ */ 48