1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.] */
57 #ifndef OPENSSL_HEADER_DES_H
58 #define OPENSSL_HEADER_DES_H
60 #include <openssl/base.h>
62 #if defined(__cplusplus)
70 typedef struct DES_cblock_st {
74 typedef struct DES_ks {
75 uint32_t subkeys[16][2];
79 #define DES_KEY_SZ (sizeof(DES_cblock))
80 #define DES_SCHEDULE_SZ (sizeof(DES_key_schedule))
85 #define DES_CBC_MODE 0
86 #define DES_PCBC_MODE 1
88 // DES_set_key performs a key schedule and initialises |schedule| with |key|.
89 OPENSSL_EXPORT void DES_set_key(const DES_cblock *key,
90 DES_key_schedule *schedule);
92 // DES_set_odd_parity sets the parity bits (the least-significant bits in each
93 // byte) of |key| given the other bits in each byte.
94 OPENSSL_EXPORT void DES_set_odd_parity(DES_cblock *key);
96 // DES_ecb_encrypt encrypts (or decrypts, if |is_encrypt| is |DES_DECRYPT|) a
97 // single DES block (8 bytes) from in to out, using the key configured in
99 OPENSSL_EXPORT void DES_ecb_encrypt(const DES_cblock *in, DES_cblock *out,
100 const DES_key_schedule *schedule,
103 // DES_ncbc_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) |len|
104 // bytes from |in| to |out| with DES in CBC mode.
105 OPENSSL_EXPORT void DES_ncbc_encrypt(const uint8_t *in, uint8_t *out,
107 const DES_key_schedule *schedule,
108 DES_cblock *ivec, int enc);
110 // DES_ecb3_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) a single
111 // block (8 bytes) of data from |input| to |output| using 3DES.
112 OPENSSL_EXPORT void DES_ecb3_encrypt(const DES_cblock *input,
114 const DES_key_schedule *ks1,
115 const DES_key_schedule *ks2,
116 const DES_key_schedule *ks3,
119 // DES_ede3_cbc_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) |len|
120 // bytes from |in| to |out| with 3DES in CBC mode. 3DES uses three keys, thus
121 // the function takes three different |DES_key_schedule|s.
122 OPENSSL_EXPORT void DES_ede3_cbc_encrypt(const uint8_t *in, uint8_t *out,
124 const DES_key_schedule *ks1,
125 const DES_key_schedule *ks2,
126 const DES_key_schedule *ks3,
127 DES_cblock *ivec, int enc);
129 // DES_ede2_cbc_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) |len|
130 // bytes from |in| to |out| with 3DES in CBC mode. With this keying option, the
131 // first and third 3DES keys are identical. Thus, this function takes only two
132 // different |DES_key_schedule|s.
133 OPENSSL_EXPORT void DES_ede2_cbc_encrypt(const uint8_t *in, uint8_t *out,
135 const DES_key_schedule *ks1,
136 const DES_key_schedule *ks2,
137 DES_cblock *ivec, int enc);
140 // Deprecated functions.
142 // DES_set_key_unchecked calls |DES_set_key|.
143 OPENSSL_EXPORT void DES_set_key_unchecked(const DES_cblock *key,
144 DES_key_schedule *schedule);
146 OPENSSL_EXPORT void DES_ede3_cfb64_encrypt(const uint8_t *in, uint8_t *out,
147 long length, DES_key_schedule *ks1,
148 DES_key_schedule *ks2,
149 DES_key_schedule *ks3,
150 DES_cblock *ivec, int *num, int enc);
152 OPENSSL_EXPORT void DES_ede3_cfb_encrypt(const uint8_t *in, uint8_t *out,
153 int numbits, long length,
154 DES_key_schedule *ks1,
155 DES_key_schedule *ks2,
156 DES_key_schedule *ks3,
157 DES_cblock *ivec, int enc);
160 // Private functions.
162 // These functions are only exported for use in |decrepit|.
164 OPENSSL_EXPORT void DES_decrypt3(uint32_t *data, const DES_key_schedule *ks1,
165 const DES_key_schedule *ks2,
166 const DES_key_schedule *ks3);
168 OPENSSL_EXPORT void DES_encrypt3(uint32_t *data, const DES_key_schedule *ks1,
169 const DES_key_schedule *ks2,
170 const DES_key_schedule *ks3);
173 #if defined(__cplusplus)
177 #endif // OPENSSL_HEADER_DES_H