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src/libdigidoc/openssl/crypto/bf/blowfish.h
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00001 /* crypto/bf/blowfish.h */
00002 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
00003  * All rights reserved.
00004  *
00005  * This package is an SSL implementation written
00006  * by Eric Young (eay@cryptsoft.com).
00007  * The implementation was written so as to conform with Netscapes SSL.
00008  * 
00009  * This library is free for commercial and non-commercial use as long as
00010  * the following conditions are aheared to.  The following conditions
00011  * apply to all code found in this distribution, be it the RC4, RSA,
00012  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
00013  * included with this distribution is covered by the same copyright terms
00014  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
00015  * 
00016  * Copyright remains Eric Young's, and as such any Copyright notices in
00017  * the code are not to be removed.
00018  * If this package is used in a product, Eric Young should be given attribution
00019  * as the author of the parts of the library used.
00020  * This can be in the form of a textual message at program startup or
00021  * in documentation (online or textual) provided with the package.
00022  * 
00023  * Redistribution and use in source and binary forms, with or without
00024  * modification, are permitted provided that the following conditions
00025  * are met:
00026  * 1. Redistributions of source code must retain the copyright
00027  *    notice, this list of conditions and the following disclaimer.
00028  * 2. Redistributions in binary form must reproduce the above copyright
00029  *    notice, this list of conditions and the following disclaimer in the
00030  *    documentation and/or other materials provided with the distribution.
00031  * 3. All advertising materials mentioning features or use of this software
00032  *    must display the following acknowledgement:
00033  *    "This product includes cryptographic software written by
00034  *     Eric Young (eay@cryptsoft.com)"
00035  *    The word 'cryptographic' can be left out if the rouines from the library
00036  *    being used are not cryptographic related :-).
00037  * 4. If you include any Windows specific code (or a derivative thereof) from 
00038  *    the apps directory (application code) you must include an acknowledgement:
00039  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
00040  * 
00041  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
00042  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00043  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00044  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
00045  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00046  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
00047  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
00048  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
00049  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
00050  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00051  * SUCH DAMAGE.
00052  * 
00053  * The licence and distribution terms for any publically available version or
00054  * derivative of this code cannot be changed.  i.e. this code cannot simply be
00055  * copied and put under another distribution licence
00056  * [including the GNU Public Licence.]
00057  */
00058 
00059 #ifndef HEADER_BLOWFISH_H
00060 #define HEADER_BLOWFISH_H
00061 
00062 #include <openssl/e_os2.h>
00063 
00064 #ifdef  __cplusplus
00065 extern "C" {
00066 #endif
00067 
00068 #ifdef OPENSSL_NO_BF
00069 #error BF is disabled.
00070 #endif
00071 
00072 #define BF_ENCRYPT      1
00073 #define BF_DECRYPT      0
00074 
00075 /*
00076  * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
00077  * ! BF_LONG has to be at least 32 bits wide. If it's wider, then !
00078  * ! BF_LONG_LOG2 has to be defined along.                        !
00079  * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
00080  */
00081 
00082 #if defined(OPENSSL_SYS_WIN16) || defined(__LP32__)
00083 #define BF_LONG unsigned long
00084 #elif defined(OPENSSL_SYS_CRAY) || defined(__ILP64__)
00085 #define BF_LONG unsigned long
00086 #define BF_LONG_LOG2 3
00087 /*
00088  * _CRAY note. I could declare short, but I have no idea what impact
00089  * does it have on performance on none-T3E machines. I could declare
00090  * int, but at least on C90 sizeof(int) can be chosen at compile time.
00091  * So I've chosen long...
00092  *                                      <appro@fy.chalmers.se>
00093  */
00094 #else
00095 #define BF_LONG unsigned int
00096 #endif
00097 
00098 #define BF_ROUNDS       16
00099 #define BF_BLOCK        8
00100 
00101 typedef struct bf_key_st
00102         {
00103         BF_LONG P[BF_ROUNDS+2];
00104         BF_LONG S[4*256];
00105         } BF_KEY;
00106 
00107 #ifdef OPENSSL_FIPS 
00108 void private_BF_set_key(BF_KEY *key, int len, const unsigned char *data);
00109 #endif
00110 void BF_set_key(BF_KEY *key, int len, const unsigned char *data);
00111 
00112 void BF_encrypt(BF_LONG *data,const BF_KEY *key);
00113 void BF_decrypt(BF_LONG *data,const BF_KEY *key);
00114 
00115 void BF_ecb_encrypt(const unsigned char *in, unsigned char *out,
00116         const BF_KEY *key, int enc);
00117 void BF_cbc_encrypt(const unsigned char *in, unsigned char *out, long length,
00118         const BF_KEY *schedule, unsigned char *ivec, int enc);
00119 void BF_cfb64_encrypt(const unsigned char *in, unsigned char *out, long length,
00120         const BF_KEY *schedule, unsigned char *ivec, int *num, int enc);
00121 void BF_ofb64_encrypt(const unsigned char *in, unsigned char *out, long length,
00122         const BF_KEY *schedule, unsigned char *ivec, int *num);
00123 const char *BF_options(void);
00124 
00125 #ifdef  __cplusplus
00126 }
00127 #endif
00128 
00129 #endif
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