blowfish.h
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- /* crypto/bf/blowfish.h */
- /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
- */
- #ifndef HEADER_BLOWFISH_H
- #define HEADER_BLOWFISH_H
- #include <openssl/e_os2.h>
- #ifdef __cplusplus
- extern "C" {
- #endif
- #ifdef OPENSSL_NO_BF
- #error BF is disabled.
- #endif
- #define BF_ENCRYPT 1
- #define BF_DECRYPT 0
- /*
- * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
- * ! BF_LONG has to be at least 32 bits wide. If it's wider, then !
- * ! BF_LONG_LOG2 has to be defined along. !
- * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
- */
- #if defined(OPENSSL_SYS_WIN16) || defined(__LP32__)
- #define BF_LONG unsigned long
- #elif defined(OPENSSL_SYS_CRAY) || defined(__ILP64__)
- #define BF_LONG unsigned long
- #define BF_LONG_LOG2 3
- /*
- * _CRAY note. I could declare short, but I have no idea what impact
- * does it have on performance on none-T3E machines. I could declare
- * int, but at least on C90 sizeof(int) can be chosen at compile time.
- * So I've chosen long...
- * <appro@fy.chalmers.se>
- */
- #else
- #define BF_LONG unsigned int
- #endif
- #define BF_ROUNDS 16
- #define BF_BLOCK 8
- typedef struct bf_key_st
- {
- BF_LONG P[BF_ROUNDS+2];
- BF_LONG S[4*256];
- } BF_KEY;
-
- void BF_set_key(BF_KEY *key, int len, const unsigned char *data);
- void BF_encrypt(BF_LONG *data,const BF_KEY *key);
- void BF_decrypt(BF_LONG *data,const BF_KEY *key);
- void BF_ecb_encrypt(const unsigned char *in, unsigned char *out,
- const BF_KEY *key, int enc);
- void BF_cbc_encrypt(const unsigned char *in, unsigned char *out, long length,
- const BF_KEY *schedule, unsigned char *ivec, int enc);
- void BF_cfb64_encrypt(const unsigned char *in, unsigned char *out, long length,
- const BF_KEY *schedule, unsigned char *ivec, int *num, int enc);
- void BF_ofb64_encrypt(const unsigned char *in, unsigned char *out, long length,
- const BF_KEY *schedule, unsigned char *ivec, int *num);
- const char *BF_options(void);
- #ifdef __cplusplus
- }
- #endif
- #endif