xref: /freebsd/contrib/telnet/libtelnet/encrypt.h (revision b0d29bc47dba79f6f38e67eabadfb4b32ffd9390)
1 /*-
2  * Copyright (c) 1991, 1993
3  *	The Regents of the University of California.  All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. Neither the name of the University nor the names of its contributors
14  *    may be used to endorse or promote products derived from this software
15  *    without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  *	@(#)encrypt.h	8.1 (Berkeley) 6/4/93
30  * $FreeBSD$
31  */
32 
33 /*
34  * Copyright (C) 1990 by the Massachusetts Institute of Technology
35  *
36  * Export of this software from the United States of America is assumed
37  * to require a specific license from the United States Government.
38  * It is the responsibility of any person or organization contemplating
39  * export to obtain such a license before exporting.
40  *
41  * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
42  * distribute this software and its documentation for any purpose and
43  * without fee is hereby granted, provided that the above copyright
44  * notice appear in all copies and that both that copyright notice and
45  * this permission notice appear in supporting documentation, and that
46  * the name of M.I.T. not be used in advertising or publicity pertaining
47  * to distribution of the software without specific, written prior
48  * permission.  M.I.T. makes no representations about the suitability of
49  * this software for any purpose.  It is provided "as is" without express
50  * or implied warranty.
51  */
52 
53 #ifdef	ENCRYPTION
54 # ifndef __ENCRYPTION__
55 # define __ENCRYPTION__
56 
57 #define	DIR_DECRYPT		1
58 #define	DIR_ENCRYPT		2
59 
60 #include <openssl/des.h>
61 typedef	unsigned char Block[8];
62 typedef unsigned char *BlockT;
63 #if 0
64 typedef struct { Block __; } Schedule[16];
65 #else
66 #define Schedule DES_key_schedule
67 #endif
68 
69 #define	VALIDKEY(key)	( key[0] | key[1] | key[2] | key[3] | \
70 			  key[4] | key[5] | key[6] | key[7])
71 
72 #define	SAMEKEY(k1, k2)	(!bcmp((void *)k1, (void *)k2, sizeof(Block)))
73 
74 typedef	struct {
75 	short		type;
76 	int		length;
77 	unsigned char	*data;
78 } Session_Key;
79 
80 typedef struct {
81 	const char *name;
82 	int	type;
83 	void	(*output)(unsigned char *, int);
84 	int	(*input)(int);
85 	void	(*init)(int);
86 	int	(*start)(int, int);
87 	int	(*is)(unsigned char *, int);
88 	int	(*reply)(unsigned char *, int);
89 	void	(*session)(Session_Key *, int);
90 	int	(*keyid)(int, unsigned char *, int *);
91 	void	(*printsub)(unsigned char *, int, unsigned char *, int);
92 } Encryptions;
93 
94 #define	SK_DES		1	/* Matched Kerberos v5 KEYTYPE_DES */
95 
96 #include "enc-proto.h"
97 
98 extern int encrypt_debug_mode;
99 extern int (*decrypt_input)(int);
100 extern void (*encrypt_output)(unsigned char *, int);
101 # endif /* __ENCRYPTION__ */
102 #endif /* ENCRYPTION */
103