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1/* $OpenBSD: des.h,v 1.19 2015/02/07 13:19:15 doug 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
69#ifdef __cplusplus
70extern "C" {
71#endif
72
73typedef unsigned char DES_cblock[8];
74typedef /* const */ unsigned char const_DES_cblock[8];
75/* With "const", gcc 2.8.1 on Solaris thinks that DES_cblock *
76 * and const_DES_cblock * are incompatible pointer types. */
77
78typedef struct DES_ks
79 {
80 union
81 {
82 DES_cblock cblock;
83 /* make sure things are correct size on machines with
84 * 8 byte longs */
85 DES_LONG deslong[2];
86 } ks[16];
87 } DES_key_schedule;
88
89#define DES_KEY_SZ (sizeof(DES_cblock))
90#define DES_SCHEDULE_SZ (sizeof(DES_key_schedule))
91
92#define DES_ENCRYPT 1
93#define DES_DECRYPT 0
94
95#define DES_CBC_MODE 0
96#define DES_PCBC_MODE 1
97
98#define DES_ecb2_encrypt(i,o,k1,k2,e) \
99 DES_ecb3_encrypt((i),(o),(k1),(k2),(k1),(e))
100
101#define DES_ede2_cbc_encrypt(i,o,l,k1,k2,iv,e) \
102 DES_ede3_cbc_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(e))
103
104#define DES_ede2_cfb64_encrypt(i,o,l,k1,k2,iv,n,e) \
105 DES_ede3_cfb64_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(n),(e))
106
107#define DES_ede2_ofb64_encrypt(i,o,l,k1,k2,iv,n) \
108 DES_ede3_ofb64_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(n))
109
110extern int DES_check_key; /* defaults to false */
111extern int DES_rw_mode; /* defaults to DES_PCBC_MODE */
112
113const char *DES_options(void);
114void DES_ecb3_encrypt(const_DES_cblock *input, DES_cblock *output,
115 DES_key_schedule *ks1,DES_key_schedule *ks2,
116 DES_key_schedule *ks3, int enc);
117DES_LONG DES_cbc_cksum(const unsigned char *input,DES_cblock *output,
118 long length,DES_key_schedule *schedule,
119 const_DES_cblock *ivec);
120/* DES_cbc_encrypt does not update the IV! Use DES_ncbc_encrypt instead. */
121void DES_cbc_encrypt(const unsigned char *input,unsigned char *output,
122 long length,DES_key_schedule *schedule,DES_cblock *ivec,
123 int enc);
124void DES_ncbc_encrypt(const unsigned char *input,unsigned char *output,
125 long length,DES_key_schedule *schedule,DES_cblock *ivec,
126 int enc);
127void DES_xcbc_encrypt(const unsigned char *input,unsigned char *output,
128 long length,DES_key_schedule *schedule,DES_cblock *ivec,
129 const_DES_cblock *inw,const_DES_cblock *outw,int enc);
130void DES_cfb_encrypt(const unsigned char *in,unsigned char *out,int numbits,
131 long length,DES_key_schedule *schedule,DES_cblock *ivec,
132 int enc);
133void DES_ecb_encrypt(const_DES_cblock *input,DES_cblock *output,
134 DES_key_schedule *ks,int enc);
135
136/* This is the DES encryption function that gets called by just about
137 every other DES routine in the library. You should not use this
138 function except to implement 'modes' of DES. I say this because the
139 functions that call this routine do the conversion from 'char *' to
140 long, and this needs to be done to make sure 'non-aligned' memory
141 access do not occur. The characters are loaded 'little endian'.
142 Data is a pointer to 2 unsigned long's and ks is the
143 DES_key_schedule to use. enc, is non zero specifies encryption,
144 zero if decryption. */
145void DES_encrypt1(DES_LONG *data,DES_key_schedule *ks, int enc);
146
147/* This functions is the same as DES_encrypt1() except that the DES
148 initial permutation (IP) and final permutation (FP) have been left
149 out. As for DES_encrypt1(), you should not use this function.
150 It is used by the routines in the library that implement triple DES.
151 IP() DES_encrypt2() DES_encrypt2() DES_encrypt2() FP() is the same
152 as DES_encrypt1() DES_encrypt1() DES_encrypt1() except faster :-). */
153void DES_encrypt2(DES_LONG *data,DES_key_schedule *ks, int enc);
154
155void DES_encrypt3(DES_LONG *data, DES_key_schedule *ks1,
156 DES_key_schedule *ks2, DES_key_schedule *ks3);
157void DES_decrypt3(DES_LONG *data, DES_key_schedule *ks1,
158 DES_key_schedule *ks2, DES_key_schedule *ks3);
159void DES_ede3_cbc_encrypt(const unsigned char *input,unsigned char *output,
160 long length,
161 DES_key_schedule *ks1,DES_key_schedule *ks2,
162 DES_key_schedule *ks3,DES_cblock *ivec,int enc);
163void DES_ede3_cbcm_encrypt(const unsigned char *in,unsigned char *out,
164 long length,
165 DES_key_schedule *ks1,DES_key_schedule *ks2,
166 DES_key_schedule *ks3,
167 DES_cblock *ivec1,DES_cblock *ivec2,
168 int enc);
169void DES_ede3_cfb64_encrypt(const unsigned char *in,unsigned char *out,
170 long length,DES_key_schedule *ks1,
171 DES_key_schedule *ks2,DES_key_schedule *ks3,
172 DES_cblock *ivec,int *num,int enc);
173void DES_ede3_cfb_encrypt(const unsigned char *in,unsigned char *out,
174 int numbits,long length,DES_key_schedule *ks1,
175 DES_key_schedule *ks2,DES_key_schedule *ks3,
176 DES_cblock *ivec,int enc);
177void DES_ede3_ofb64_encrypt(const unsigned char *in,unsigned char *out,
178 long length,DES_key_schedule *ks1,
179 DES_key_schedule *ks2,DES_key_schedule *ks3,
180 DES_cblock *ivec,int *num);
181int DES_enc_read(int fd,void *buf,int len,DES_key_schedule *sched,
182 DES_cblock *iv);
183int DES_enc_write(int fd,const void *buf,int len,DES_key_schedule *sched,
184 DES_cblock *iv);
185char *DES_fcrypt(const char *buf,const char *salt, char *ret);
186char *DES_crypt(const char *buf,const char *salt);
187void DES_ofb_encrypt(const unsigned char *in,unsigned char *out,int numbits,
188 long length,DES_key_schedule *schedule,DES_cblock *ivec);
189void DES_pcbc_encrypt(const unsigned char *input,unsigned char *output,
190 long length,DES_key_schedule *schedule,DES_cblock *ivec,
191 int enc);
192DES_LONG DES_quad_cksum(const unsigned char *input,DES_cblock output[],
193 long length,int out_count,DES_cblock *seed);
194int DES_random_key(DES_cblock *ret);
195void DES_set_odd_parity(DES_cblock *key);
196int DES_check_key_parity(const_DES_cblock *key);
197int DES_is_weak_key(const_DES_cblock *key);
198/* DES_set_key (= set_key = DES_key_sched = key_sched) calls
199 * DES_set_key_checked if global variable DES_check_key is set,
200 * DES_set_key_unchecked otherwise. */
201int DES_set_key(const_DES_cblock *key,DES_key_schedule *schedule);
202int DES_key_sched(const_DES_cblock *key,DES_key_schedule *schedule);
203int DES_set_key_checked(const_DES_cblock *key,DES_key_schedule *schedule);
204void DES_set_key_unchecked(const_DES_cblock *key,DES_key_schedule *schedule);
205void DES_string_to_key(const char *str,DES_cblock *key);
206void DES_string_to_2keys(const char *str,DES_cblock *key1,DES_cblock *key2);
207void DES_cfb64_encrypt(const unsigned char *in,unsigned char *out,long length,
208 DES_key_schedule *schedule,DES_cblock *ivec,int *num,
209 int enc);
210void DES_ofb64_encrypt(const unsigned char *in,unsigned char *out,long length,
211 DES_key_schedule *schedule,DES_cblock *ivec,int *num);
212
213#define DES_fixup_key_parity DES_set_odd_parity
214
215#ifdef __cplusplus
216}
217#endif
218
219#endif
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