xref: /freebsd/contrib/telnet/libtelnet/encrypt.h (revision 59e2ff550c448126b988150ce800cdf73bb5103e)
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. All advertising materials mentioning features or use of this software
14  *    must display the following acknowledgement:
15  *	This product includes software developed by the University of
16  *	California, Berkeley and its contributors.
17  * 4. Neither the name of the University nor the names of its contributors
18  *    may be used to endorse or promote products derived from this software
19  *    without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31  * SUCH DAMAGE.
32  *
33  *	@(#)encrypt.h	8.1 (Berkeley) 6/4/93
34  * $FreeBSD$
35  */
36 
37 /*
38  * Copyright (C) 1990 by the Massachusetts Institute of Technology
39  *
40  * Export of this software from the United States of America is assumed
41  * to require a specific license from the United States Government.
42  * It is the responsibility of any person or organization contemplating
43  * export to obtain such a license before exporting.
44  *
45  * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
46  * distribute this software and its documentation for any purpose and
47  * without fee is hereby granted, provided that the above copyright
48  * notice appear in all copies and that both that copyright notice and
49  * this permission notice appear in supporting documentation, and that
50  * the name of M.I.T. not be used in advertising or publicity pertaining
51  * to distribution of the software without specific, written prior
52  * permission.  M.I.T. makes no representations about the suitability of
53  * this software for any purpose.  It is provided "as is" without express
54  * or implied warranty.
55  */
56 
57 #ifdef	ENCRYPTION
58 # ifndef __ENCRYPTION__
59 # define __ENCRYPTION__
60 
61 #define	DIR_DECRYPT		1
62 #define	DIR_ENCRYPT		2
63 
64 #include <openssl/des.h>
65 typedef	unsigned char Block[8];
66 typedef unsigned char *BlockT;
67 #if 0
68 typedef struct { Block __; } Schedule[16];
69 #else
70 #define Schedule des_key_schedule
71 #endif
72 
73 #define	VALIDKEY(key)	( key[0] | key[1] | key[2] | key[3] | \
74 			  key[4] | key[5] | key[6] | key[7])
75 
76 #define	SAMEKEY(k1, k2)	(!bcmp((void *)k1, (void *)k2, sizeof(Block)))
77 
78 typedef	struct {
79 	short		type;
80 	int		length;
81 	unsigned char	*data;
82 } Session_Key;
83 
84 typedef struct {
85 	const char *name;
86 	int	type;
87 	void	(*output)(unsigned char *, int);
88 	int	(*input)(int);
89 	void	(*init)(int);
90 	int	(*start)(int, int);
91 	int	(*is)(unsigned char *, int);
92 	int	(*reply)(unsigned char *, int);
93 	void	(*session)(Session_Key *, int);
94 	int	(*keyid)(int, unsigned char *, int *);
95 	void	(*printsub)(unsigned char *, int, unsigned char *, int);
96 } Encryptions;
97 
98 #define	SK_DES		1	/* Matched Kerberos v5 KEYTYPE_DES */
99 
100 #include "enc-proto.h"
101 
102 extern int encrypt_debug_mode;
103 extern int (*decrypt_input)(int);
104 extern void (*encrypt_output)(unsigned char *, int);
105 # endif /* __ENCRYPTION__ */
106 #endif /* ENCRYPTION */
107