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. 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: src/crypto/telnet/libtelnet/encrypt.h,v 1.4.2.1 2002/04/13 10:59:07 markm Exp $
  31  * $DragonFly: src/crypto/telnet/libtelnet/encrypt.h,v 1.2 2003/06/17 04:24:37 dillon Exp $
  32  */
  33
  34 /*
  35  * Copyright (C) 1990 by the Massachusetts Institute of Technology
  36  *
  37  * Export of this software from the United States of America is assumed
  38  * to require a specific license from the United States Government.
  39  * It is the responsibility of any person or organization contemplating
  40  * export to obtain such a license before exporting.
  41  *
  42  * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
  43  * distribute this software and its documentation for any purpose and
  44  * without fee is hereby granted, provided that the above copyright
  45  * notice appear in all copies and that both that copyright notice and
  46  * this permission notice appear in supporting documentation, and that
  47  * the name of M.I.T. not be used in advertising or publicity pertaining
  48  * to distribution of the software without specific, written prior
  49  * permission.  M.I.T. makes no representations about the suitability of
  50  * this software for any purpose.  It is provided "as is" without express
  51  * or implied warranty.
  52  */
  53
  54 #ifdef  ENCRYPTION
  55 # ifndef __ENCRYPTION__
  56 # define __ENCRYPTION__
  57
  58 #define DIR_DECRYPT             1
  59 #define DIR_ENCRYPT             2
  60
  61 #include <openssl/des.h>
  62 typedef unsigned char Block[8];
  63 typedef unsigned char *BlockT;
  64 #if 0
  65 typedef struct { Block __; } Schedule[16];
  66 #else
  67 #define Schedule DES_key_schedule
  68 #endif
  69
  70 #define VALIDKEY(key)   ( key[0] | key[1] | key[2] | key[3] | \
  71                           key[4] | key[5] | key[6] | key[7])
  72
  73 #define SAMEKEY(k1, k2) (!bcmp((void *)k1, (void *)k2, sizeof(Block)))
  74
  75 typedef struct {
  76         short           type;
  77         int             length;
  78         unsigned char   *data;
  79 } Session_Key;
  80
  81 typedef struct {
  82         const char *name;
  83         int     type;
  84         void    (*output)(unsigned char *, int);
  85         int     (*input)(int);
  86         void    (*init)(int);
  87         int     (*start)(int, int);
  88         int     (*is)(unsigned char *, int);
  89         int     (*reply)(unsigned char *, int);
  90         void    (*session)(Session_Key *, int);
  91         int     (*keyid)(int, unsigned char *, int *);
  92         void    (*printsub)(unsigned char *, int, unsigned char *, int);
  93 } Encryptions;
  94
  95 #define SK_DES          1       /* Matched Kerberos v5 KEYTYPE_DES */
  96
  97 #include "enc-proto.h"
  98
  99 extern int encrypt_debug_mode;
 100 extern int (*decrypt_input)(int);
 101 extern void (*encrypt_output)(unsigned char *, int);
 102 # endif /* __ENCRYPTION__ */
 103 #endif /* ENCRYPTION */