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(__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	{
103	BF_LONG P[BF_ROUNDS+2];
104	BF_LONG S[4*256];
105	} BF_KEY;
106
107#ifdef OPENSSL_FIPS
108void private_BF_set_key(BF_KEY *key, int len, const unsigned char *data);
109#endif
110void BF_set_key(BF_KEY *key, int len, const unsigned char *data);
111
112void BF_encrypt(BF_LONG *data,const BF_KEY *key);
113void BF_decrypt(BF_LONG *data,const BF_KEY *key);
114
115void BF_ecb_encrypt(const unsigned char *in, unsigned char *out,
116	const BF_KEY *key, int enc);
117void BF_cbc_encrypt(const unsigned char *in, unsigned char *out, long length,
118	const BF_KEY *schedule, unsigned char *ivec, int enc);
119void BF_cfb64_encrypt(const unsigned char *in, unsigned char *out, long length,
120	const BF_KEY *schedule, unsigned char *ivec, int *num, int enc);
121void BF_ofb64_encrypt(const unsigned char *in, unsigned char *out, long length,
122	const BF_KEY *schedule, unsigned char *ivec, int *num);
123const char *BF_options(void);
124
125#ifdef  __cplusplus
126}
127#endif
128
129#endif
130