1 /* crypto/cast/cast.h */
2 /* Copyright (C) 1995-1998 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_CAST_H
60 #define HEADER_CAST_H
61
62 #ifdef __cplusplus
63 extern "C" {
64 #endif
65
66 #include <openssl/opensslconf.h>
67
68 #ifdef OPENSSL_NO_CAST
69 #error CAST is disabled.
70 #endif
71
72 #define CAST_ENCRYPT 1
73 #define CAST_DECRYPT 0
74
75 #define CAST_LONG unsigned int
76
77 #define CAST_BLOCK 8
78 #define CAST_KEY_LENGTH 16
79
80 typedef struct cast_key_st
81 {
82 CAST_LONG data[32];
83 int short_key; /* Use reduced rounds for short key */
84 } CAST_KEY;
85
86 #ifdef OPENSSL_FIPS
87 void private_CAST_set_key(CAST_KEY *key, int len, const unsigned char *data);
88 #endif
89 void CAST_set_key(CAST_KEY *key, int len, const unsigned char *data);
90 void CAST_ecb_encrypt(const unsigned char *in, unsigned char *out, const CAST_KEY *key,
91 int enc);
92 void CAST_encrypt(CAST_LONG *data, const CAST_KEY *key);
93 void CAST_decrypt(CAST_LONG *data, const CAST_KEY *key);
94 void CAST_cbc_encrypt(const unsigned char *in, unsigned char *out, long length,
95 const CAST_KEY *ks, unsigned char *iv, int enc);
96 void CAST_cfb64_encrypt(const unsigned char *in, unsigned char *out,
97 long length, const CAST_KEY *schedule, unsigned char *ivec,
98 int *num, int enc);
99 void CAST_ofb64_encrypt(const unsigned char *in, unsigned char *out,
100 long length, const CAST_KEY *schedule, unsigned char *ivec,
101 int *num);
102
103 #ifdef __cplusplus
104 }
105 #endif
106
107 #endif