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      1 /*-
      2  * Copyright (c) 1991, 1993
      3  *      Dave Safford.  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  * $FreeBSD: src/contrib/telnet/libtelnet/pk.h,v 1.6 2001/11/30 21:06:34 markm Exp $
     30  */
     31 
     32 /* header for the des routines that we will use */
     33 
     34 typedef unsigned char byte, DesData[ 8], IdeaData[16];
     35 #define DesKeys des_key_schedule
     36 
     37 #define DES_DECRYPT 0
     38 #define DES_ENCRYPT 1
     39 
     40 /* public key routines */
     41 /* functions:
     42 	genkeys(char *public, char *secret)
     43 	common_key(char *secret, char *public, desData *deskey)
     44       where
     45 	char public[HEXKEYBYTES + 1];
     46 	char secret[HEXKEYBYTES + 1];
     47  */
     48 
     49 #define HEXMODULUS "d4a0ba0250b6fd2ec626e7efd637df76c716e22d0944b88b"
     50 #define HEXKEYBYTES 48
     51 #define KEYSIZE 192
     52 #define KEYBYTES 24
     53 #define PROOT 3
     54 
     55 extern void genkeys(char *public, char *secret);
     56 extern void common_key(char *secret, char *public, IdeaData *common,
     57   DesData *deskey);
     58 extern void pk_encode(const char *in, char *out, DesData *deskey);
     59 extern void pk_decode(const char *in, char *out, DesData *deskey);
     60