[b32552c] | 1 | /* crypto/bf/blowfish.h */ |
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| 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * This package is an SSL implementation written |
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| 6 | * by Eric Young (eay@cryptsoft.com). |
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| 7 | * The implementation was written so as to conform with Netscapes SSL. |
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| 8 | * |
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| 9 | * This library is free for commercial and non-commercial use as long as |
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| 10 | * the following conditions are aheared to. The following conditions |
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| 11 | * apply to all code found in this distribution, be it the RC4, RSA, |
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| 12 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
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| 13 | * included with this distribution is covered by the same copyright terms |
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| 14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
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| 15 | * |
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| 16 | * Copyright remains Eric Young's, and as such any Copyright notices in |
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| 17 | * the code are not to be removed. |
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| 18 | * If this package is used in a product, Eric Young should be given attribution |
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| 19 | * as the author of the parts of the library used. |
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| 20 | * This can be in the form of a textual message at program startup or |
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| 21 | * in documentation (online or textual) provided with the package. |
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| 22 | * |
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| 23 | * Redistribution and use in source and binary forms, with or without |
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| 24 | * modification, are permitted provided that the following conditions |
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| 25 | * are met: |
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| 26 | * 1. Redistributions of source code must retain the copyright |
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| 27 | * notice, this list of conditions and the following disclaimer. |
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| 28 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 29 | * notice, this list of conditions and the following disclaimer in the |
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| 30 | * documentation and/or other materials provided with the distribution. |
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| 31 | * 3. All advertising materials mentioning features or use of this software |
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| 32 | * must display the following acknowledgement: |
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| 33 | * "This product includes cryptographic software written by |
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| 34 | * Eric Young (eay@cryptsoft.com)" |
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| 35 | * The word 'cryptographic' can be left out if the rouines from the library |
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| 36 | * being used are not cryptographic related :-). |
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| 37 | * 4. If you include any Windows specific code (or a derivative thereof) from |
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| 38 | * the apps directory (application code) you must include an acknowledgement: |
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| 39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
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| 40 | * |
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| 41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
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| 42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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| 45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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| 50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 51 | * SUCH DAMAGE. |
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| 52 | * |
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| 53 | * The licence and distribution terms for any publically available version or |
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| 54 | * derivative of this code cannot be changed. i.e. this code cannot simply be |
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| 55 | * copied and put under another distribution licence |
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| 56 | * [including the GNU Public Licence.] |
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| 57 | */ |
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| 58 | |
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| 59 | #ifndef HEADER_BLOWFISH_H |
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| 60 | #define HEADER_BLOWFISH_H |
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| 61 | |
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| 62 | #include <openssl/e_os2.h> |
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| 63 | |
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| 64 | #ifdef __cplusplus |
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| 65 | extern "C" { |
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| 66 | #endif |
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| 67 | |
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| 68 | #ifdef OPENSSL_NO_BF |
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| 69 | #error BF is disabled. |
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| 70 | #endif |
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| 71 | |
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| 72 | #define BF_ENCRYPT 1 |
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| 73 | #define BF_DECRYPT 0 |
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| 74 | |
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| 75 | /* |
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| 76 | * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
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| 77 | * ! BF_LONG has to be at least 32 bits wide. If it's wider, then ! |
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| 78 | * ! BF_LONG_LOG2 has to be defined along. ! |
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| 79 | * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
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| 80 | */ |
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| 81 | |
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| 82 | #if defined(OPENSSL_SYS_WIN16) || defined(__LP32__) |
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| 83 | #define BF_LONG unsigned long |
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| 84 | #elif defined(OPENSSL_SYS_CRAY) || defined(__ILP64__) |
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| 85 | #define BF_LONG unsigned long |
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| 86 | #define BF_LONG_LOG2 3 |
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| 87 | /* |
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| 88 | * _CRAY note. I could declare short, but I have no idea what impact |
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| 89 | * does it have on performance on none-T3E machines. I could declare |
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| 90 | * int, but at least on C90 sizeof(int) can be chosen at compile time. |
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| 91 | * So I've chosen long... |
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| 92 | * <appro@fy.chalmers.se> |
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| 93 | */ |
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| 94 | #else |
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| 95 | #define BF_LONG unsigned int |
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| 96 | #endif |
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| 97 | |
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| 98 | #define BF_ROUNDS 16 |
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| 99 | #define BF_BLOCK 8 |
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| 100 | |
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| 101 | typedef struct bf_key_st |
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| 102 | { |
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| 103 | BF_LONG P[BF_ROUNDS+2]; |
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| 104 | BF_LONG S[4*256]; |
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| 105 | } BF_KEY; |
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| 106 | |
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| 107 | |
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| 108 | void BF_set_key(BF_KEY *key, int len, const unsigned char *data); |
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| 109 | |
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| 110 | void BF_encrypt(BF_LONG *data,const BF_KEY *key); |
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| 111 | void BF_decrypt(BF_LONG *data,const BF_KEY *key); |
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| 112 | |
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| 113 | void BF_ecb_encrypt(const unsigned char *in, unsigned char *out, |
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| 114 | const BF_KEY *key, int enc); |
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| 115 | void BF_cbc_encrypt(const unsigned char *in, unsigned char *out, long length, |
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| 116 | const BF_KEY *schedule, unsigned char *ivec, int enc); |
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| 117 | void BF_cfb64_encrypt(const unsigned char *in, unsigned char *out, long length, |
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| 118 | const BF_KEY *schedule, unsigned char *ivec, int *num, int enc); |
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| 119 | void BF_ofb64_encrypt(const unsigned char *in, unsigned char *out, long length, |
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| 120 | const BF_KEY *schedule, unsigned char *ivec, int *num); |
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| 121 | const char *BF_options(void); |
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| 122 | |
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| 123 | #ifdef __cplusplus |
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| 124 | } |
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| 125 | #endif |
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| 126 | |
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| 127 | #endif |
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