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