rc5.h revision 296465 
1/* crypto/rc5/rc5.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_RC5_H
60# define HEADER_RC5_H
61
62# include <openssl/opensslconf.h>/* OPENSSL_NO_RC5 */
63
64#ifdef  __cplusplus
65extern "C" {
66#endif
67
68# ifdef OPENSSL_NO_RC5
69#  error RC5 is disabled.
70# endif
71
72# define RC5_ENCRYPT     1
73# define RC5_DECRYPT     0
74
75/* 32 bit.  For Alpha, things may get weird */
76# define RC5_32_INT unsigned long
77
78# define RC5_32_BLOCK            8
79# define RC5_32_KEY_LENGTH       16/* This is a default, max is 255 */
80
81/*
82 * This are the only values supported.  Tweak the code if you want more The
83 * most supported modes will be RC5-32/12/16 RC5-32/16/8
84 */
85# define RC5_8_ROUNDS    8
86# define RC5_12_ROUNDS   12
87# define RC5_16_ROUNDS   16
88
89typedef struct rc5_key_st {
90    /* Number of rounds */
91    int rounds;
92    RC5_32_INT data[2 * (RC5_16_ROUNDS + 1)];
93} RC5_32_KEY;
94
95# ifdef OPENSSL_FIPS
96void private_RC5_32_set_key(RC5_32_KEY *key, int len,
97                            const unsigned char *data, int rounds);
98# endif
99void RC5_32_set_key(RC5_32_KEY *key, int len, const unsigned char *data,
100                    int rounds);
101void RC5_32_ecb_encrypt(const unsigned char *in, unsigned char *out,
102                        RC5_32_KEY *key, int enc);
103void RC5_32_encrypt(unsigned long *data, RC5_32_KEY *key);
104void RC5_32_decrypt(unsigned long *data, RC5_32_KEY *key);
105void RC5_32_cbc_encrypt(const unsigned char *in, unsigned char *out,
106                        long length, RC5_32_KEY *ks, unsigned char *iv,
107                        int enc);
108void RC5_32_cfb64_encrypt(const unsigned char *in, unsigned char *out,
109                          long length, RC5_32_KEY *schedule,
110                          unsigned char *ivec, int *num, int enc);
111void RC5_32_ofb64_encrypt(const unsigned char *in, unsigned char *out,
112                          long length, RC5_32_KEY *schedule,
113                          unsigned char *ivec, int *num);
114
115#ifdef  __cplusplus
116}
117#endif
118
119#endif
120