| 1 | /* $NetBSD: des.h,v 1.8 2009/03/14 14:46:08 dsl Exp $ */ |
| 2 | /* $KAME: des.h,v 1.7 2000/09/18 20:59:21 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 |
| 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 *, |
| 86 | des_key_schedule, int); |
| 87 | |
| 88 | void des_encrypt1(DES_LONG *, des_key_schedule, int); |
| 89 | void des_encrypt2(DES_LONG *, des_key_schedule, int); |
| 90 | void des_encrypt3(DES_LONG *, des_key_schedule, des_key_schedule, |
| 91 | des_key_schedule); |
| 92 | void des_decrypt3(DES_LONG *, des_key_schedule, des_key_schedule, |
| 93 | des_key_schedule); |
| 94 | |
| 95 | void des_ecb3_encrypt(des_cblock *, des_cblock *, des_key_schedule, |
| 96 | des_key_schedule, des_key_schedule, int); |
| 97 | |
| 98 | void des_ncbc_encrypt(const unsigned char *, unsigned char *, long, |
| 99 | des_key_schedule, des_cblock *, int); |
| 100 | |
| 101 | void des_ede3_cbc_encrypt(const unsigned char *, unsigned char *, long, |
| 102 | des_key_schedule, des_key_schedule, |
| 103 | des_key_schedule, des_cblock *, int); |
| 104 | |
| 105 | void des_set_odd_parity(des_cblock *); |
| 106 | void des_fixup_key_parity(des_cblock *); |
| 107 | int des_is_weak_key(des_cblock *); |
| 108 | int des_set_key(des_cblock *, des_key_schedule); |
| 109 | int des_key_sched(des_cblock *, des_key_schedule); |
| 110 | int des_set_key_checked(des_cblock *, des_key_schedule); |
| 111 | void des_set_key_unchecked(des_cblock *, des_key_schedule); |
| 112 | int des_check_key_parity(des_cblock *); |
| 113 | |
| 114 | #ifdef __cplusplus |
| 115 | } |
| 116 | #endif |
| 117 | |
| 118 | #endif |
| 119 | |