lib/libtelnet/encrypt.h

   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: src/crypto/telnet/libtelnet/encrypt.h,v 1.4.2.1 2002/04/13 10:59:07 markm Exp $
  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 <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 */