1 /* $FreeBSD$ */ 2 /* $KAME: des.h,v 1.8 2001/09/10 04:03:57 itojun Exp $ */ 3 4 /* lib/des/des.h */ 5 /* Copyright (C) 1995-1996 Eric Young (eay@mincom.oz.au) 6 * All rights reserved. 7 * 8 * This file is part of an SSL implementation written 9 * by Eric Young (eay@mincom.oz.au). 10 * The implementation was written so as to conform with Netscapes SSL 11 * specification. This library and applications are 12 * FREE FOR COMMERCIAL AND NON-COMMERCIAL USE 13 * as long as the following conditions are aheared to. 14 * 15 * Copyright remains Eric Young's, and as such any Copyright notices in 16 * the code are not to be removed. If this code is used in a product, 17 * Eric Young should be given attribution as the author of the parts used. 18 * This can be in the form of a textual message at program startup or 19 * in documentation (online or textual) provided with the package. 20 * 21 * Redistribution and use in source and binary forms, with or without 22 * modification, are permitted provided that the following conditions 23 * are met: 24 * 1. Redistributions of source code must retain the copyright 25 * notice, this list of conditions and the following disclaimer. 26 * 2. Redistributions in binary form must reproduce the above copyright 27 * notice, this list of conditions and the following disclaimer in the 28 * documentation and/or other materials provided with the distribution. 29 * 3. All advertising materials mentioning features or use of this software 30 * must display the following acknowledgement: 31 * This product includes software developed by Eric Young (eay@mincom.oz.au) 32 * 33 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 34 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 35 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 36 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 37 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 38 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 39 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 40 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 41 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 42 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 43 * SUCH DAMAGE. 44 * 45 * The licence and distribution terms for any publically available version or 46 * derivative of this code cannot be changed. i.e. this code cannot simply be 47 * copied and put under another distribution licence 48 * [including the GNU Public Licence.] 49 */ 50 51 #ifndef HEADER_DES_H 52 #define HEADER_DES_H 53 54 #ifdef __cplusplus 55 extern "C" { 56 #endif 57 58 /* must be 32bit quantity */ 59 #define DES_LONG u_int32_t 60 61 typedef unsigned char des_cblock[8]; 62 typedef struct des_ks_struct 63 { 64 union { 65 des_cblock cblock; 66 /* make sure things are correct size on machines with 67 * 8 byte longs */ 68 DES_LONG deslong[2]; 69 } ks; 70 int weak_key; 71 } des_key_schedule[16]; 72 73 #define DES_KEY_SZ (sizeof(des_cblock)) 74 #define DES_SCHEDULE_SZ (sizeof(des_key_schedule)) 75 76 #define DES_ENCRYPT 1 77 #define DES_DECRYPT 0 78 79 #define DES_CBC_MODE 0 80 #define DES_PCBC_MODE 1 81 82 extern int des_check_key; /* defaults to false */ 83 84 char *des_options(void); 85 void des_ecb_encrypt(des_cblock *, des_cblock *, des_key_schedule, int); 86 87 void des_encrypt1(DES_LONG *, des_key_schedule, int); 88 void des_encrypt2(DES_LONG *, des_key_schedule, int); 89 void des_encrypt3(DES_LONG *, des_key_schedule, des_key_schedule, 90 des_key_schedule); 91 void des_decrypt3(DES_LONG *, des_key_schedule, des_key_schedule, 92 des_key_schedule); 93 94 void des_ecb3_encrypt(des_cblock *, des_cblock *, des_key_schedule, 95 des_key_schedule, des_key_schedule, int); 96 97 void des_ncbc_encrypt(const unsigned char *, unsigned char *, long, 98 des_key_schedule, des_cblock *, int); 99 100 void des_ede3_cbc_encrypt(const unsigned char *, unsigned char *, long, 101 des_key_schedule, des_key_schedule, 102 des_key_schedule, des_cblock *, int); 103 104 void des_set_odd_parity(des_cblock *); 105 void des_fixup_key_parity(des_cblock *); 106 int des_is_weak_key(des_cblock *); 107 int des_set_key(des_cblock *, des_key_schedule); 108 int des_key_sched(des_cblock *, des_key_schedule); 109 int des_set_key_checked(des_cblock *, des_key_schedule); 110 void des_set_key_unchecked(des_cblock *, des_key_schedule); 111 int des_check_key_parity(des_cblock *); 112 113 #ifdef __cplusplus 114 } 115 #endif 116 117 #endif 118