blowfish.h revision 296465 
1/* crypto/bf/blowfish.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_BLOWFISH_H
60# define HEADER_BLOWFISH_H
61
62# include <openssl/e_os2.h>
63
64#ifdef  __cplusplus
65extern "C" {
66#endif
67
68# ifdef OPENSSL_NO_BF
69#  error BF is disabled.
70# endif
71
72# define BF_ENCRYPT      1
73# define BF_DECRYPT      0
74
75/*-
76 * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
77 * ! BF_LONG has to be at least 32 bits wide. If it's wider, then !
78 * ! BF_LONG_LOG2 has to be defined along.                        !
79 * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
80 */
81
82# if defined(OPENSSL_SYS_WIN16) || defined(__LP32__)
83#  define BF_LONG unsigned long
84# elif defined(OPENSSL_SYS_CRAY) || defined(__ILP64__)
85#  define BF_LONG unsigned long
86#  define BF_LONG_LOG2 3
87/*
88 * _CRAY note. I could declare short, but I have no idea what impact
89 * does it have on performance on none-T3E machines. I could declare
90 * int, but at least on C90 sizeof(int) can be chosen at compile time.
91 * So I've chosen long...
92 *                                      <appro@fy.chalmers.se>
93 */
94# else
95#  define BF_LONG unsigned int
96# endif
97
98# define BF_ROUNDS       16
99# define BF_BLOCK        8
100
101typedef struct bf_key_st {
102    BF_LONG P[BF_ROUNDS + 2];
103    BF_LONG S[4 * 256];
104} BF_KEY;
105
106# ifdef OPENSSL_FIPS
107void private_BF_set_key(BF_KEY *key, int len, const unsigned char *data);
108# endif
109void BF_set_key(BF_KEY *key, int len, const unsigned char *data);
110
111void BF_encrypt(BF_LONG *data, const BF_KEY *key);
112void BF_decrypt(BF_LONG *data, const BF_KEY *key);
113
114void BF_ecb_encrypt(const unsigned char *in, unsigned char *out,
115                    const BF_KEY *key, int enc);
116void BF_cbc_encrypt(const unsigned char *in, unsigned char *out, long length,
117                    const BF_KEY *schedule, unsigned char *ivec, int enc);
118void BF_cfb64_encrypt(const unsigned char *in, unsigned char *out,
119                      long length, const BF_KEY *schedule,
120                      unsigned char *ivec, int *num, int enc);
121void BF_ofb64_encrypt(const unsigned char *in, unsigned char *out,
122                      long length, const BF_KEY *schedule,
123                      unsigned char *ivec, int *num);
124const char *BF_options(void);
125
126#ifdef  __cplusplus
127}
128#endif
129
130#endif
131