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blowfish.h
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1 /* crypto/bf/blowfish.h */
2 /* Copyright (C) 1995-1998 Eric Young ([email protected])
3  * All rights reserved.
4  *
5  * This package is an SSL implementation written
6  * by Eric Young ([email protected]).
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 ([email protected]).
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 ([email protected])"
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 ([email protected])"
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
65 extern "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...
93  */
94 #else
95 #define BF_LONG unsigned int
96 #endif
97 
98 #define BF_ROUNDS 16
99 #define BF_BLOCK 8
100 
101 typedef 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
108 void private_BF_set_key(BF_KEY *key, int len, const unsigned char *data);
109 #endif
110 void BF_set_key(BF_KEY *key, int len, const unsigned char *data);
111 
112 void BF_encrypt(BF_LONG *data,const BF_KEY *key);
113 void BF_decrypt(BF_LONG *data,const BF_KEY *key);
114 
115 void BF_ecb_encrypt(const unsigned char *in, unsigned char *out,
116  const BF_KEY *key, int enc);
117 void BF_cbc_encrypt(const unsigned char *in, unsigned char *out, long length,
118  const BF_KEY *schedule, unsigned char *ivec, int enc);
119 void BF_cfb64_encrypt(const unsigned char *in, unsigned char *out, long length,
120  const BF_KEY *schedule, unsigned char *ivec, int *num, int enc);
121 void BF_ofb64_encrypt(const unsigned char *in, unsigned char *out, long length,
122  const BF_KEY *schedule, unsigned char *ivec, int *num);
123 const char *BF_options(void);
124 
125 #ifdef __cplusplus
126 }
127 #endif
128 
129 #endif