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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#ifdef NO_DES
63#error DES is disabled.
64#endif
65
66#ifdef _KERBEROS_DES_H
67#error <openssl/des.h> replaces <kerberos/des.h>.
68#endif
69
70#include <openssl/opensslconf.h> /* DES_LONG */
71#include <openssl/e_os2.h> /* OPENSSL_EXTERN */
72
73#ifdef __cplusplus
74extern "C" {
75#endif
76
77typedef unsigned char des_cblock[8];
78typedef /* const */ unsigned char const_des_cblock[8];
79/* With "const", gcc 2.8.1 on Solaris thinks that des_cblock *
80 * and const_des_cblock * are incompatible pointer types. */
81
82typedef struct des_ks_struct
83 {
84 union {
85 des_cblock cblock;
86 /* make sure things are correct size on machines with
87 * 8 byte longs */
88 DES_LONG deslong[2];
89 } ks;
90 int weak_key;
91 } des_key_schedule[16];
92
93#define DES_KEY_SZ (sizeof(des_cblock))
94#define DES_SCHEDULE_SZ (sizeof(des_key_schedule))
95
96#define DES_ENCRYPT 1
97#define DES_DECRYPT 0
98
99#define DES_CBC_MODE 0
100#define DES_PCBC_MODE 1
101
102#define des_ecb2_encrypt(i,o,k1,k2,e) \
103 des_ecb3_encrypt((i),(o),(k1),(k2),(k1),(e))
104
105#define des_ede2_cbc_encrypt(i,o,l,k1,k2,iv,e) \
106 des_ede3_cbc_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(e))
107
108#define des_ede2_cfb64_encrypt(i,o,l,k1,k2,iv,n,e) \
109 des_ede3_cfb64_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(n),(e))
110
111#define des_ede2_ofb64_encrypt(i,o,l,k1,k2,iv,n) \
112 des_ede3_ofb64_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(n))
113
114OPENSSL_EXTERN int des_check_key; /* defaults to false */
115OPENSSL_EXTERN int des_rw_mode; /* defaults to DES_PCBC_MODE */
116OPENSSL_EXTERN int des_set_weak_key_flag; /* set the weak key flag */
117
118const char *des_options(void);
119void des_ecb3_encrypt(const_des_cblock *input, des_cblock *output,
120 des_key_schedule ks1,des_key_schedule ks2,
121 des_key_schedule ks3, int enc);
122DES_LONG des_cbc_cksum(const unsigned char *input,des_cblock *output,
123 long length,des_key_schedule schedule,
124 const_des_cblock *ivec);
125/* des_cbc_encrypt does not update the IV! Use des_ncbc_encrypt instead. */
126void des_cbc_encrypt(const unsigned char *input,unsigned char *output,
127 long length,des_key_schedule schedule,des_cblock *ivec,
128 int enc);
129void des_ncbc_encrypt(const unsigned char *input,unsigned char *output,
130 long length,des_key_schedule schedule,des_cblock *ivec,
131 int enc);
132void des_xcbc_encrypt(const unsigned char *input,unsigned char *output,
133 long length,des_key_schedule schedule,des_cblock *ivec,
134 const_des_cblock *inw,const_des_cblock *outw,int enc);
135void des_cfb_encrypt(const unsigned char *in,unsigned char *out,int numbits,
136 long length,des_key_schedule schedule,des_cblock *ivec,
137 int enc);
138void des_ecb_encrypt(const_des_cblock *input,des_cblock *output,
139 des_key_schedule ks,int enc);
140
141/* This is the DES encryption function that gets called by just about
142 every other DES routine in the library. You should not use this
143 function except to implement 'modes' of DES. I say this because the
144 functions that call this routine do the conversion from 'char *' to
145 long, and this needs to be done to make sure 'non-aligned' memory
146 access do not occur. The characters are loaded 'little endian'.
147 Data is a pointer to 2 unsigned long's and ks is the
148 des_key_schedule to use. enc, is non zero specifies encryption,
149 zero if decryption. */
150void des_encrypt1(DES_LONG *data,des_key_schedule ks, int enc);
151
152/* This functions is the same as des_encrypt1() except that the DES
153 initial permutation (IP) and final permutation (FP) have been left
154 out. As for des_encrypt1(), you should not use this function.
155 It is used by the routines in the library that implement triple DES.
156 IP() des_encrypt2() des_encrypt2() des_encrypt2() FP() is the same
157 as des_encrypt1() des_encrypt1() des_encrypt1() except faster :-). */
158void des_encrypt2(DES_LONG *data,des_key_schedule ks, int enc);
159
160void des_encrypt3(DES_LONG *data, des_key_schedule ks1,
161 des_key_schedule ks2, des_key_schedule ks3);
162void des_decrypt3(DES_LONG *data, des_key_schedule ks1,
163 des_key_schedule ks2, des_key_schedule ks3);
164void des_ede3_cbc_encrypt(const unsigned char *input,unsigned char *output,
165 long length,
166 des_key_schedule ks1,des_key_schedule ks2,
167 des_key_schedule ks3,des_cblock *ivec,int enc);
168void des_ede3_cbcm_encrypt(const unsigned char *in,unsigned char *out,
169 long length,
170 des_key_schedule ks1,des_key_schedule ks2,
171 des_key_schedule ks3,
172 des_cblock *ivec1,des_cblock *ivec2,
173 int enc);
174void des_ede3_cfb64_encrypt(const unsigned char *in,unsigned char *out,
175 long length,des_key_schedule ks1,
176 des_key_schedule ks2,des_key_schedule ks3,
177 des_cblock *ivec,int *num,int enc);
178void des_ede3_ofb64_encrypt(const unsigned char *in,unsigned char *out,
179 long length,des_key_schedule ks1,
180 des_key_schedule ks2,des_key_schedule ks3,
181 des_cblock *ivec,int *num);
182
183void des_xwhite_in2out(const_des_cblock *des_key,const_des_cblock *in_white,
184 des_cblock *out_white);
185
186int des_enc_read(int fd,void *buf,int len,des_key_schedule sched,
187 des_cblock *iv);
188int des_enc_write(int fd,const void *buf,int len,des_key_schedule sched,
189 des_cblock *iv);
190char *des_fcrypt(const char *buf,const char *salt, char *ret);
191char *des_crypt(const char *buf,const char *salt);
192#if !defined(PERL5) && !defined(__FreeBSD__) && !defined(NeXT)
193char *crypt(const char *buf,const char *salt);
194#endif
195void des_ofb_encrypt(const unsigned char *in,unsigned char *out,int numbits,
196 long length,des_key_schedule schedule,des_cblock *ivec);
197void des_pcbc_encrypt(const unsigned char *input,unsigned char *output,
198 long length,des_key_schedule schedule,des_cblock *ivec,
199 int enc);
200DES_LONG des_quad_cksum(const unsigned char *input,des_cblock output[],
201 long length,int out_count,des_cblock *seed);
202void des_random_seed(des_cblock *key);
203int des_random_key(des_cblock *ret);
204int des_read_password(des_cblock *key,const char *prompt,int verify);
205int des_read_2passwords(des_cblock *key1,des_cblock *key2,
206 const char *prompt,int verify);
207int des_read_pw_string(char *buf,int length,const char *prompt,int verify);
208void des_set_odd_parity(des_cblock *key);
209int des_check_key_parity(const_des_cblock *key);
210int des_is_weak_key(const_des_cblock *key);
211/* des_set_key (= set_key = des_key_sched = key_sched) calls
212 * des_set_key_checked if global variable des_check_key is set,
213 * des_set_key_unchecked otherwise. */
214int des_set_key(const_des_cblock *key,des_key_schedule schedule);
215int des_key_sched(const_des_cblock *key,des_key_schedule schedule);
216int des_set_key_checked(const_des_cblock *key,des_key_schedule schedule);
217void des_set_key_unchecked(const_des_cblock *key,des_key_schedule schedule);
218void des_string_to_key(const char *str,des_cblock *key);
219void des_string_to_2keys(const char *str,des_cblock *key1,des_cblock *key2);
220void des_cfb64_encrypt(const unsigned char *in,unsigned char *out,long length,
221 des_key_schedule schedule,des_cblock *ivec,int *num,
222 int enc);
223void des_ofb64_encrypt(const unsigned char *in,unsigned char *out,long length,
224 des_key_schedule schedule,des_cblock *ivec,int *num);
225int des_read_pw(char *buf,char *buff,int size,const char *prompt,int verify);
226
227/* The following definitions provide compatibility with the MIT Kerberos
228 * library. The des_key_schedule structure is not binary compatible. */
229
230#define _KERBEROS_DES_H
231
232#define KRBDES_ENCRYPT DES_ENCRYPT
233#define KRBDES_DECRYPT DES_DECRYPT
234
235#ifdef KERBEROS
236# define ENCRYPT DES_ENCRYPT
237# define DECRYPT DES_DECRYPT
238#endif
239
240#ifndef NCOMPAT
241# define C_Block des_cblock
242# define Key_schedule des_key_schedule
243# define KEY_SZ DES_KEY_SZ
244# define string_to_key des_string_to_key
245# define read_pw_string des_read_pw_string
246# define random_key des_random_key
247# define pcbc_encrypt des_pcbc_encrypt
248# define set_key des_set_key
249# define key_sched des_key_sched
250# define ecb_encrypt des_ecb_encrypt
251# define cbc_encrypt des_cbc_encrypt
252# define ncbc_encrypt des_ncbc_encrypt
253# define xcbc_encrypt des_xcbc_encrypt
254# define cbc_cksum des_cbc_cksum
255# define quad_cksum des_quad_cksum
256# define check_parity des_check_key_parity
257#endif
258
259typedef des_key_schedule bit_64;
260#define des_fixup_key_parity des_set_odd_parity
261
262#ifdef __cplusplus
263}
264#endif
265
266#endif
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