Annotation of embedaddon/strongswan/src/libstrongswan/plugins/blowfish/blowfish.h, revision 1.1.1.1
1.1 misho 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 adhered 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 routines 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 publicly 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: #ifdef __cplusplus
63: extern "C" {
64: #endif
65:
66: #ifdef NO_BF
67: #error BF is disabled.
68: #endif
69:
70: #define BF_ENCRYPT 1
71: #define BF_DECRYPT 0
72:
73: /*
74: * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
75: * ! BF_LONG has to be at least 32 bits wide. If it's wider, then !
76: * ! BF_LONG_LOG2 has to be defined along. !
77: * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
78: */
79:
80: #if defined(WIN16) || defined(__LP32__)
81: #define BF_LONG unsigned long
82: #elif defined(_CRAY) || defined(__ILP64__)
83: #define BF_LONG unsigned long
84: #define BF_LONG_LOG2 3
85: #endif
86: /*
87: * _CRAY note. I could declare short, but I have no idea what impact
88: * does it have on performance on none-T3E machines. I could declare
89: * int, but at least on C90 sizeof(int) can be chosen at compile time.
90: * So I've chosen long...
91: * <appro@fy.chalmers.se>
92: */
93:
94: /* des.h-like hack <jjo-ipsec@mendoza.gov.ar> */
95: #ifndef BF_LONG
96: #ifdef __KERNEL__
97: #include <linux/types.h>
98: #else
99: #include <sys/types.h>
100: #endif
101: #define BF_LONG u_int32_t
102: #endif
103:
104: #define BF_ROUNDS 16
105: #define BF_BLOCK 8
106:
107: typedef struct bf_key_st
108: {
109: BF_LONG P[BF_ROUNDS+2];
110: BF_LONG S[4*256];
111: } BF_KEY;
112:
113:
114: void BF_set_key(BF_KEY *key, int len, const unsigned char *data);
115:
116: void BF_encrypt(BF_LONG *data,const BF_KEY *key);
117: void BF_decrypt(BF_LONG *data,const BF_KEY *key);
118:
119: void BF_ecb_encrypt(const unsigned char *in, unsigned char *out,
120: const BF_KEY *key, int enc);
121: void BF_cbc_encrypt(const unsigned char *in, unsigned char *out, long length,
122: const BF_KEY *schedule, unsigned char *ivec, int enc);
123: void BF_cfb64_encrypt(const unsigned char *in, unsigned char *out, long length,
124: const BF_KEY *schedule, unsigned char *ivec, int *num, int enc);
125: void BF_ofb64_encrypt(const unsigned char *in, unsigned char *out, long length,
126: const BF_KEY *schedule, unsigned char *ivec, int *num);
127: const char *BF_options(void);
128:
129: #ifdef __cplusplus
130: }
131: #endif
132:
133: #endif
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