1 /* crypto/bf/blowfish.h */ 2 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay (at) 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 (at) 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 (at) 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 (at) 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 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... 92 * <appro (at) fy.chalmers.se> 93 */ 94 #else 95 #define BF_LONG unsigned int 96 #endif 97 98 #define BF_ROUNDS 16 99 #define BF_BLOCK 8 100 101 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 130
