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1/* crypto/des/des.h */
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_DES_H
60#define HEADER_DES_H
61
62#include <openssl/e_os2.h> /* OPENSSL_EXTERN, OPENSSL_NO_DES,
63 DES_LONG (via openssl/opensslconf.h */
64
65#ifdef OPENSSL_NO_DES
66#error DES is disabled.
67#endif
68
69#ifdef OPENSSL_BUILD_SHLIBCRYPTO
70# undef OPENSSL_EXTERN
71# define OPENSSL_EXTERN OPENSSL_EXPORT
72#endif
73
74#define des_SPtrans DES_SPtrans
75
76#ifdef __cplusplus
77extern "C" {
78#endif
79
80typedef unsigned char DES_cblock[8];
81typedef /* const */ unsigned char const_DES_cblock[8];
82/* With "const", gcc 2.8.1 on Solaris thinks that DES_cblock *
83 * and const_DES_cblock * are incompatible pointer types. */
84
85typedef struct DES_ks
86 {
87 union
88 {
89 DES_cblock cblock;
90 /* make sure things are correct size on machines with
91 * 8 byte longs */
92 DES_LONG deslong[2];
93 } ks[16];
94 } DES_key_schedule;
95
96#ifndef OPENSSL_DISABLE_OLD_DES_SUPPORT
97# ifndef OPENSSL_ENABLE_OLD_DES_SUPPORT
98# define OPENSSL_ENABLE_OLD_DES_SUPPORT
99# endif
100#endif
101
102#ifdef OPENSSL_ENABLE_OLD_DES_SUPPORT
103# include <openssl/des_old.h>
104#endif
105
106#define DES_KEY_SZ (sizeof(DES_cblock))
107#define DES_SCHEDULE_SZ (sizeof(DES_key_schedule))
108
109#define DES_ENCRYPT 1
110#define DES_DECRYPT 0
111
112#define DES_CBC_MODE 0
113#define DES_PCBC_MODE 1
114
115#define DES_ecb2_encrypt(i,o,k1,k2,e) \
116 DES_ecb3_encrypt((i),(o),(k1),(k2),(k1),(e))
117
118#define DES_ede2_cbc_encrypt(i,o,l,k1,k2,iv,e) \
119 DES_ede3_cbc_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(e))
120
121#define DES_ede2_cfb64_encrypt(i,o,l,k1,k2,iv,n,e) \
122 DES_ede3_cfb64_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(n),(e))
123
124#define DES_ede2_ofb64_encrypt(i,o,l,k1,k2,iv,n) \
125 DES_ede3_ofb64_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(n))
126
127OPENSSL_DECLARE_GLOBAL(int,DES_check_key); /* defaults to false */
128#define DES_check_key OPENSSL_GLOBAL_REF(DES_check_key)
129OPENSSL_DECLARE_GLOBAL(int,DES_rw_mode); /* defaults to DES_PCBC_MODE */
130#define DES_rw_mode OPENSSL_GLOBAL_REF(DES_rw_mode)
131
132const char *DES_options(void);
133void DES_ecb3_encrypt(const_DES_cblock *input, DES_cblock *output,
134 DES_key_schedule *ks1,DES_key_schedule *ks2,
135 DES_key_schedule *ks3, int enc);
136DES_LONG DES_cbc_cksum(const unsigned char *input,DES_cblock *output,
137 long length,DES_key_schedule *schedule,
138 const_DES_cblock *ivec);
139/* DES_cbc_encrypt does not update the IV! Use DES_ncbc_encrypt instead. */
140void DES_cbc_encrypt(const unsigned char *input,unsigned char *output,
141 long length,DES_key_schedule *schedule,DES_cblock *ivec,
142 int enc);
143void DES_ncbc_encrypt(const unsigned char *input,unsigned char *output,
144 long length,DES_key_schedule *schedule,DES_cblock *ivec,
145 int enc);
146void DES_xcbc_encrypt(const unsigned char *input,unsigned char *output,
147 long length,DES_key_schedule *schedule,DES_cblock *ivec,
148 const_DES_cblock *inw,const_DES_cblock *outw,int enc);
149void DES_cfb_encrypt(const unsigned char *in,unsigned char *out,int numbits,
150 long length,DES_key_schedule *schedule,DES_cblock *ivec,
151 int enc);
152void DES_ecb_encrypt(const_DES_cblock *input,DES_cblock *output,
153 DES_key_schedule *ks,int enc);
154
155/* This is the DES encryption function that gets called by just about
156 every other DES routine in the library. You should not use this
157 function except to implement 'modes' of DES. I say this because the
158 functions that call this routine do the conversion from 'char *' to
159 long, and this needs to be done to make sure 'non-aligned' memory
160 access do not occur. The characters are loaded 'little endian'.
161 Data is a pointer to 2 unsigned long's and ks is the
162 DES_key_schedule to use. enc, is non zero specifies encryption,
163 zero if decryption. */
164void DES_encrypt1(DES_LONG *data,DES_key_schedule *ks, int enc);
165
166/* This functions is the same as DES_encrypt1() except that the DES
167 initial permutation (IP) and final permutation (FP) have been left
168 out. As for DES_encrypt1(), you should not use this function.
169 It is used by the routines in the library that implement triple DES.
170 IP() DES_encrypt2() DES_encrypt2() DES_encrypt2() FP() is the same
171 as DES_encrypt1() DES_encrypt1() DES_encrypt1() except faster :-). */
172void DES_encrypt2(DES_LONG *data,DES_key_schedule *ks, int enc);
173
174void DES_encrypt3(DES_LONG *data, DES_key_schedule *ks1,
175 DES_key_schedule *ks2, DES_key_schedule *ks3);
176void DES_decrypt3(DES_LONG *data, DES_key_schedule *ks1,
177 DES_key_schedule *ks2, DES_key_schedule *ks3);
178void DES_ede3_cbc_encrypt(const unsigned char *input,unsigned char *output,
179 long length,
180 DES_key_schedule *ks1,DES_key_schedule *ks2,
181 DES_key_schedule *ks3,DES_cblock *ivec,int enc);
182void DES_ede3_cbcm_encrypt(const unsigned char *in,unsigned char *out,
183 long length,
184 DES_key_schedule *ks1,DES_key_schedule *ks2,
185 DES_key_schedule *ks3,
186 DES_cblock *ivec1,DES_cblock *ivec2,
187 int enc);
188void DES_ede3_cfb64_encrypt(const unsigned char *in,unsigned char *out,
189 long length,DES_key_schedule *ks1,
190 DES_key_schedule *ks2,DES_key_schedule *ks3,
191 DES_cblock *ivec,int *num,int enc);
192void DES_ede3_cfb_encrypt(const unsigned char *in,unsigned char *out,
193 int numbits,long length,DES_key_schedule *ks1,
194 DES_key_schedule *ks2,DES_key_schedule *ks3,
195 DES_cblock *ivec,int enc);
196void DES_ede3_ofb64_encrypt(const unsigned char *in,unsigned char *out,
197 long length,DES_key_schedule *ks1,
198 DES_key_schedule *ks2,DES_key_schedule *ks3,
199 DES_cblock *ivec,int *num);
200#if 0
201void DES_xwhite_in2out(const_DES_cblock *DES_key,const_DES_cblock *in_white,
202 DES_cblock *out_white);
203#endif
204
205int DES_enc_read(int fd,void *buf,int len,DES_key_schedule *sched,
206 DES_cblock *iv);
207int DES_enc_write(int fd,const void *buf,int len,DES_key_schedule *sched,
208 DES_cblock *iv);
209char *DES_fcrypt(const char *buf,const char *salt, char *ret);
210char *DES_crypt(const char *buf,const char *salt);
211void DES_ofb_encrypt(const unsigned char *in,unsigned char *out,int numbits,
212 long length,DES_key_schedule *schedule,DES_cblock *ivec);
213void DES_pcbc_encrypt(const unsigned char *input,unsigned char *output,
214 long length,DES_key_schedule *schedule,DES_cblock *ivec,
215 int enc);
216DES_LONG DES_quad_cksum(const unsigned char *input,DES_cblock output[],
217 long length,int out_count,DES_cblock *seed);
218int DES_random_key(DES_cblock *ret);
219void DES_set_odd_parity(DES_cblock *key);
220int DES_check_key_parity(const_DES_cblock *key);
221int DES_is_weak_key(const_DES_cblock *key);
222/* DES_set_key (= set_key = DES_key_sched = key_sched) calls
223 * DES_set_key_checked if global variable DES_check_key is set,
224 * DES_set_key_unchecked otherwise. */
225int DES_set_key(const_DES_cblock *key,DES_key_schedule *schedule);
226int DES_key_sched(const_DES_cblock *key,DES_key_schedule *schedule);
227int DES_set_key_checked(const_DES_cblock *key,DES_key_schedule *schedule);
228void DES_set_key_unchecked(const_DES_cblock *key,DES_key_schedule *schedule);
229void DES_string_to_key(const char *str,DES_cblock *key);
230void DES_string_to_2keys(const char *str,DES_cblock *key1,DES_cblock *key2);
231void DES_cfb64_encrypt(const unsigned char *in,unsigned char *out,long length,
232 DES_key_schedule *schedule,DES_cblock *ivec,int *num,
233 int enc);
234void DES_ofb64_encrypt(const unsigned char *in,unsigned char *out,long length,
235 DES_key_schedule *schedule,DES_cblock *ivec,int *num);
236
237int DES_read_password(DES_cblock *key, const char *prompt, int verify);
238int DES_read_2passwords(DES_cblock *key1, DES_cblock *key2, const char *prompt,
239 int verify);
240
241#define DES_fixup_key_parity DES_set_odd_parity
242
243#ifdef __cplusplus
244}
245#endif
246
247#endif
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