bsd/crypto/blowfish/blowfish.h

   1 /*      $FreeBSD: src/sys/crypto/blowfish/blowfish.h,v 1.1.2.3 2002/03/26 10:12:23 ume Exp $    */
   2 /*      $KAME: blowfish.h,v 1.12 2002/02/27 01:33:59 itojun Exp $       */
   3
   4 /* crypto/bf/blowfish.h */
   5 /* Copyright (C) 1995-1997 Eric Young (eay@mincom.oz.au)
   6  * All rights reserved.
   7  *
   8  * This package is an SSL implementation written
   9  * by Eric Young (eay@mincom.oz.au).
  10  * The implementation was written so as to conform with Netscapes SSL.
  11  *
  12  * This library is free for commercial and non-commercial use as long as
  13  * the following conditions are aheared to.  The following conditions
  14  * apply to all code found in this distribution, be it the RC4, RSA,
  15  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  16  * included with this distribution is covered by the same copyright terms
  17  * except that the holder is Tim Hudson (tjh@mincom.oz.au).
  18  *
  19  * Copyright remains Eric Young's, and as such any Copyright notices in
  20  * the code are not to be removed.
  21  * If this package is used in a product, Eric Young should be given attribution
  22  * as the author of the parts of the library used.
  23  * This can be in the form of a textual message at program startup or
  24  * in documentation (online or textual) provided with the package.
  25  *
  26  * Redistribution and use in source and binary forms, with or without
  27  * modification, are permitted provided that the following conditions
  28  * are met:
  29  * 1. Redistributions of source code must retain the copyright
  30  *    notice, this list of conditions and the following disclaimer.
  31  * 2. Redistributions in binary form must reproduce the above copyright
  32  *    notice, this list of conditions and the following disclaimer in the
  33  *    documentation and/or other materials provided with the distribution.
  34  * 3. All advertising materials mentioning features or use of this software
  35  *    must display the following acknowledgement:
  36  *    "This product includes cryptographic software written by
  37  *     Eric Young (eay@mincom.oz.au)"
  38  *    The word 'cryptographic' can be left out if the rouines from the library
  39  *    being used are not cryptographic related :-).
  40  * 4. If you include any Windows specific code (or a derivative thereof) from
  41  *    the apps directory (application code) you must include an acknowledgement:
  42  *    "This product includes software written by Tim Hudson (tjh@mincom.oz.au)"
  43  *
  44  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  45  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  46  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  47  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  48  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  49  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  50  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  51  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  52  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  53  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  54  * SUCH DAMAGE.
  55  *
  56  * The licence and distribution terms for any publically available version or
  57  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  58  * copied and put under another distribution licence
  59  * [including the GNU Public Licence.]
  60  */
  61
  62 #ifndef HEADER_BLOWFISH_H
  63 #define HEADER_BLOWFISH_H
  64
  65 #ifdef  __cplusplus
  66 extern "C" {
  67 #endif
  68
  69 #define BF_ENCRYPT      1
  70 #define BF_DECRYPT      0
  71
  72 /* must be 32bit quantity */
  73 #define BF_LONG u_int32_t
  74
  75 #define BF_ROUNDS       16
  76 #define BF_BLOCK        8
  77
  78 typedef struct bf_key_st {
  79         BF_LONG P[BF_ROUNDS+2];
  80         BF_LONG S[4*256];
  81 } BF_KEY;
  82
  83 void BF_set_key __P((BF_KEY *, int, unsigned char *));
  84 void BF_encrypt __P((BF_LONG *, BF_KEY *));
  85 void BF_decrypt __P((BF_LONG *, BF_KEY *));
  86 void BF_cbc_encrypt(const unsigned char *, unsigned char *, long,
  87                     const BF_KEY *, unsigned char *, int);
  88
  89 #ifdef  __cplusplus
  90 }
  91 #endif
  92
  93 #endif