encrypt.h

来自「Linux下的socks的程序源程序,用于socks的代理服务」· C头文件 代码 · 共 93 行

/*-
 * Copyright (c) 1991 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted provided
 * that: (1) source distributions retain this entire copyright notice and
 * comment, and (2) distributions including binaries display the following
 * acknowledgement:  ``This product includes software developed by the
 * University of California, Berkeley and its contributors'' in the
 * documentation or other materials provided with the distribution and in
 * all advertising materials mentioning features or use of this software.
 * Neither the name of the University nor the names of its contributors may
 * be used to endorse or promote products derived from this software without
 * specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 *	@(#)encrypt.h	5.1 (Berkeley) 2/28/91
 */

/*
 * Copyright (C) 1990 by the Massachusetts Institute of Technology
 *
 * Export of this software from the United States of America is assumed
 * to require a specific license from the United States Government.
 * It is the responsibility of any person or organization contemplating
 * export to obtain such a license before exporting.
 *
 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
 * distribute this software and its documentation for any purpose and
 * without fee is hereby granted, provided that the above copyright
 * notice appear in all copies and that both that copyright notice and
 * this permission notice appear in supporting documentation, and that
 * the name of M.I.T. not be used in advertising or publicity pertaining
 * to distribution of the software without specific, written prior
 * permission.  M.I.T. makes no representations about the suitability of
 * this software for any purpose.  It is provided "as is" without express
 * or implied warranty.
 */

#ifndef	__ENCRYPT__
#define	__ENCRYPT__

#define	DIR_DECRYPT		1
#define	DIR_ENCRYPT		2

typedef	unsigned char Block[8];
typedef unsigned char *BlockT;
typedef struct { Block _; } Schedule[16];

#define	VALIDKEY(key)	( key[0] | key[1] | key[2] | key[3] | \
			  key[4] | key[5] | key[6] | key[7])

#define	SAMEKEY(k1, k2)	(!bcmp((void *)k1, (void *)k2, sizeof(Block)))

typedef	struct {
	short		type;
	int		length;
	unsigned char	*data;
} Session_Key;

#if	!defined(P)
#ifdef	__STDC__
#define P(x)	x
#else
#define P(x)	()
#endif
#endif

typedef struct {
	char	*name;
	int	type;
	void	(*output) P((unsigned char *, int));
	int	(*input) P((int));
	void	(*init) P((int));
	int	(*start) P((int, int));
	int	(*is) P((unsigned char *, int));
	int	(*reply) P((unsigned char *, int));
	void	(*session) P((Session_Key *, int));
	int	(*keyid) P((int, unsigned char *, int *));
	void	(*printsub) P((unsigned char *, int, unsigned char *, int));
} Encryptions;

#define	SK_DES		1	/* Matched Kerberos v5 KEYTYPE_DES */

#include "enc-proto.h"

extern int encrypt_debug_mode;
extern int (*decrypt_input) P((int));
extern void (*encrypt_output) P((unsigned char *, int));
#endif