1/* $OpenBSD: des.h,v 1.21 2023/07/31 05:04:06 tb Exp $ */ 2/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 59#ifndef HEADER_NEW_DES_H 60#define HEADER_NEW_DES_H 61 62#include <openssl/opensslconf.h> 63 64#ifdef OPENSSL_NO_DES 65#error DES is disabled. 66#endif 67 68#ifdef __cplusplus 69extern "C" { 70#endif 71 72typedef unsigned char DES_cblock[8]; 73typedef /* const */ unsigned char const_DES_cblock[8]; 74/* With "const", gcc 2.8.1 on Solaris thinks that DES_cblock * 75 * and const_DES_cblock * are incompatible pointer types. */ 76 77typedef struct DES_ks { 78 union { 79 DES_cblock cblock; 80 /* make sure things are correct size on machines with 81 * 8 byte longs */ 82 DES_LONG deslong[2]; 83 } ks[16]; 84} DES_key_schedule; 85 86#define DES_KEY_SZ (sizeof(DES_cblock)) 87#define DES_SCHEDULE_SZ (sizeof(DES_key_schedule)) 88 89#define DES_ENCRYPT 1 90#define DES_DECRYPT 0 91 92#define DES_CBC_MODE 0 93#define DES_PCBC_MODE 1 94 95#define DES_ecb2_encrypt(i,o,k1,k2,e) \ 96 DES_ecb3_encrypt((i),(o),(k1),(k2),(k1),(e)) 97 98#define DES_ede2_cbc_encrypt(i,o,l,k1,k2,iv,e) \ 99 DES_ede3_cbc_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(e)) 100 101#define DES_ede2_cfb64_encrypt(i,o,l,k1,k2,iv,n,e) \ 102 DES_ede3_cfb64_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(n),(e)) 103 104#define DES_ede2_ofb64_encrypt(i,o,l,k1,k2,iv,n) \ 105 DES_ede3_ofb64_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(n)) 106 107extern int DES_check_key; /* defaults to false */ 108extern int DES_rw_mode; /* defaults to DES_PCBC_MODE */ 109 110void DES_ecb3_encrypt(const_DES_cblock *input, DES_cblock *output, 111 DES_key_schedule *ks1, DES_key_schedule *ks2, 112 DES_key_schedule *ks3, int enc); 113DES_LONG DES_cbc_cksum(const unsigned char *input, DES_cblock *output, 114 long length, DES_key_schedule *schedule, 115 const_DES_cblock *ivec); 116/* DES_cbc_encrypt does not update the IV! Use DES_ncbc_encrypt instead. */ 117void DES_cbc_encrypt(const unsigned char *input, unsigned char *output, 118 long length, DES_key_schedule *schedule, DES_cblock *ivec, 119 int enc); 120void DES_ncbc_encrypt(const unsigned char *input, unsigned char *output, 121 long length, DES_key_schedule *schedule, DES_cblock *ivec, 122 int enc); 123void DES_xcbc_encrypt(const unsigned char *input, unsigned char *output, 124 long length, DES_key_schedule *schedule, DES_cblock *ivec, 125 const_DES_cblock *inw, const_DES_cblock *outw, int enc); 126void DES_cfb_encrypt(const unsigned char *in, unsigned char *out, int numbits, 127 long length, DES_key_schedule *schedule, DES_cblock *ivec, 128 int enc); 129void DES_ecb_encrypt(const_DES_cblock *input, DES_cblock *output, 130 DES_key_schedule *ks, int enc); 131 132/* This is the DES encryption function that gets called by just about 133 every other DES routine in the library. You should not use this 134 function except to implement 'modes' of DES. I say this because the 135 functions that call this routine do the conversion from 'char *' to 136 long, and this needs to be done to make sure 'non-aligned' memory 137 access do not occur. The characters are loaded 'little endian'. 138 Data is a pointer to 2 unsigned long's and ks is the 139 DES_key_schedule to use. enc, is non zero specifies encryption, 140 zero if decryption. */ 141void DES_encrypt1(DES_LONG *data, DES_key_schedule *ks, int enc); 142 143/* This functions is the same as DES_encrypt1() except that the DES 144 initial permutation (IP) and final permutation (FP) have been left 145 out. As for DES_encrypt1(), you should not use this function. 146 It is used by the routines in the library that implement triple DES. 147 IP() DES_encrypt2() DES_encrypt2() DES_encrypt2() FP() is the same 148 as DES_encrypt1() DES_encrypt1() DES_encrypt1() except faster :-). */ 149void DES_encrypt2(DES_LONG *data, DES_key_schedule *ks, int enc); 150 151void DES_encrypt3(DES_LONG *data, DES_key_schedule *ks1, 152 DES_key_schedule *ks2, DES_key_schedule *ks3); 153void DES_decrypt3(DES_LONG *data, DES_key_schedule *ks1, 154 DES_key_schedule *ks2, DES_key_schedule *ks3); 155void DES_ede3_cbc_encrypt(const unsigned char *input, unsigned char *output, 156 long length, 157 DES_key_schedule *ks1, DES_key_schedule *ks2, 158 DES_key_schedule *ks3, DES_cblock *ivec, int enc); 159void DES_ede3_cbcm_encrypt(const unsigned char *in, unsigned char *out, 160 long length, 161 DES_key_schedule *ks1, DES_key_schedule *ks2, 162 DES_key_schedule *ks3, 163 DES_cblock *ivec1, DES_cblock *ivec2, 164 int enc); 165void DES_ede3_cfb64_encrypt(const unsigned char *in, unsigned char *out, 166 long length, DES_key_schedule *ks1, 167 DES_key_schedule *ks2, DES_key_schedule *ks3, 168 DES_cblock *ivec, int *num, int enc); 169void DES_ede3_cfb_encrypt(const unsigned char *in, unsigned char *out, 170 int numbits, long length, DES_key_schedule *ks1, 171 DES_key_schedule *ks2, DES_key_schedule *ks3, 172 DES_cblock *ivec, int enc); 173void DES_ede3_ofb64_encrypt(const unsigned char *in, unsigned char *out, 174 long length, DES_key_schedule *ks1, 175 DES_key_schedule *ks2, DES_key_schedule *ks3, 176 DES_cblock *ivec, int *num); 177int DES_enc_read(int fd, void *buf, int len, DES_key_schedule *sched, 178 DES_cblock *iv); 179int DES_enc_write(int fd, const void *buf, int len, DES_key_schedule *sched, 180 DES_cblock *iv); 181char *DES_fcrypt(const char *buf, const char *salt, char *ret); 182char *DES_crypt(const char *buf, const char *salt); 183void DES_ofb_encrypt(const unsigned char *in, unsigned char *out, int numbits, 184 long length, DES_key_schedule *schedule, DES_cblock *ivec); 185void DES_pcbc_encrypt(const unsigned char *input, unsigned char *output, 186 long length, DES_key_schedule *schedule, DES_cblock *ivec, 187 int enc); 188DES_LONG DES_quad_cksum(const unsigned char *input, DES_cblock output[], 189 long length, int out_count, DES_cblock *seed); 190int DES_random_key(DES_cblock *ret); 191void DES_set_odd_parity(DES_cblock *key); 192int DES_check_key_parity(const_DES_cblock *key); 193int DES_is_weak_key(const_DES_cblock *key); 194/* DES_set_key (= set_key = DES_key_sched = key_sched) calls 195 * DES_set_key_checked if global variable DES_check_key is set, 196 * DES_set_key_unchecked otherwise. */ 197int DES_set_key(const_DES_cblock *key, DES_key_schedule *schedule); 198int DES_key_sched(const_DES_cblock *key, DES_key_schedule *schedule); 199int DES_set_key_checked(const_DES_cblock *key, DES_key_schedule *schedule); 200void DES_set_key_unchecked(const_DES_cblock *key, DES_key_schedule *schedule); 201void DES_string_to_key(const char *str, DES_cblock *key); 202void DES_string_to_2keys(const char *str, DES_cblock *key1, DES_cblock *key2); 203void DES_cfb64_encrypt(const unsigned char *in, unsigned char *out, long length, 204 DES_key_schedule *schedule, DES_cblock *ivec, int *num, 205 int enc); 206void DES_ofb64_encrypt(const unsigned char *in, unsigned char *out, long length, 207 DES_key_schedule *schedule, DES_cblock *ivec, int *num); 208 209#define DES_fixup_key_parity DES_set_odd_parity 210 211#ifdef __cplusplus 212} 213#endif 214 215#endif 216