| /* $Id: acss.h,v 1.2 2004/02/06 04:22:43 dtucker Exp $ */ |
| /* |
| * Copyright (c) 2004 The OpenBSD project |
| * |
| * Permission to use, copy, modify, and distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| #ifndef _ACSS_H_ |
| #define _ACSS_H_ |
| |
| /* 40bit key */ |
| #define ACSS_KEYSIZE 5 |
| |
| /* modes of acss */ |
| #define ACSS_AUTHENTICATE 0 |
| #define ACSS_SESSIONKEY 1 |
| #define ACSS_TITLEKEY 2 |
| #define ACSS_DATA 3 |
| |
| typedef struct acss_key_st { |
| unsigned int lfsr17; /* current state of lfsrs */ |
| unsigned int lfsr25; |
| unsigned int lfsrsum; |
| unsigned char seed[ACSS_KEYSIZE]; |
| unsigned char data[ACSS_KEYSIZE]; |
| unsigned char subkey[ACSS_KEYSIZE]; |
| int encrypt; /* XXX make these bit flags? */ |
| int mode; |
| int seeded; |
| int subkey_avilable; |
| } ACSS_KEY; |
| |
| void acss_setkey(ACSS_KEY *, const unsigned char *, int, int); |
| void acss_setsubkey(ACSS_KEY *, const unsigned char *); |
| int acss(ACSS_KEY *, unsigned long, const unsigned char *, unsigned char *); |
| |
| #endif /* ifndef _ACSS_H_ */ |