| 1 |
27 |
unneback |
//==========================================================================
|
| 2 |
|
|
//
|
| 3 |
|
|
// include/netinet/ip_blf.h
|
| 4 |
|
|
//
|
| 5 |
|
|
//
|
| 6 |
|
|
//
|
| 7 |
|
|
//==========================================================================
|
| 8 |
|
|
//####BSDCOPYRIGHTBEGIN####
|
| 9 |
|
|
//
|
| 10 |
|
|
// -------------------------------------------
|
| 11 |
|
|
//
|
| 12 |
|
|
// Portions of this software may have been derived from OpenBSD or other sources,
|
| 13 |
|
|
// and are covered by the appropriate copyright disclaimers included herein.
|
| 14 |
|
|
//
|
| 15 |
|
|
// -------------------------------------------
|
| 16 |
|
|
//
|
| 17 |
|
|
//####BSDCOPYRIGHTEND####
|
| 18 |
|
|
//==========================================================================
|
| 19 |
|
|
//#####DESCRIPTIONBEGIN####
|
| 20 |
|
|
//
|
| 21 |
|
|
// Author(s): gthomas
|
| 22 |
|
|
// Contributors: gthomas
|
| 23 |
|
|
// Date: 2000-01-10
|
| 24 |
|
|
// Purpose:
|
| 25 |
|
|
// Description:
|
| 26 |
|
|
//
|
| 27 |
|
|
//
|
| 28 |
|
|
//####DESCRIPTIONEND####
|
| 29 |
|
|
//
|
| 30 |
|
|
//==========================================================================
|
| 31 |
|
|
|
| 32 |
|
|
|
| 33 |
|
|
/* $OpenBSD: ip_blf.h,v 1.2 1999/02/23 05:15:09 angelos Exp $ */
|
| 34 |
|
|
/*
|
| 35 |
|
|
* Blowfish - a fast block cipher designed by Bruce Schneier
|
| 36 |
|
|
*
|
| 37 |
|
|
* Copyright 1997 Niels Provos <provos@physnet.uni-hamburg.de>
|
| 38 |
|
|
* All rights reserved.
|
| 39 |
|
|
*
|
| 40 |
|
|
* Redistribution and use in source and binary forms, with or without
|
| 41 |
|
|
* modification, are permitted provided that the following conditions
|
| 42 |
|
|
* are met:
|
| 43 |
|
|
* 1. Redistributions of source code must retain the above copyright
|
| 44 |
|
|
* notice, this list of conditions and the following disclaimer.
|
| 45 |
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
| 46 |
|
|
* notice, this list of conditions and the following disclaimer in the
|
| 47 |
|
|
* documentation and/or other materials provided with the distribution.
|
| 48 |
|
|
* 3. All advertising materials mentioning features or use of this software
|
| 49 |
|
|
* must display the following acknowledgement:
|
| 50 |
|
|
* This product includes software developed by Niels Provos.
|
| 51 |
|
|
* 4. The name of the author may not be used to endorse or promote products
|
| 52 |
|
|
* derived from this software without specific prior written permission.
|
| 53 |
|
|
*
|
| 54 |
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
| 55 |
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
| 56 |
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
| 57 |
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
| 58 |
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
| 59 |
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
| 60 |
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
| 61 |
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
| 62 |
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
| 63 |
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
| 64 |
|
|
*/
|
| 65 |
|
|
|
| 66 |
|
|
#ifndef _NETINET_IP_BLF_H_
|
| 67 |
|
|
#define _NETINET_IP_BLF_H_
|
| 68 |
|
|
|
| 69 |
|
|
/* Schneier states the maximum key length to be 56 bytes.
|
| 70 |
|
|
* The way how the subkeys are initalized by the key up
|
| 71 |
|
|
* to (N+2)*4 i.e. 72 bytes are utilized.
|
| 72 |
|
|
* Warning: For normal blowfish encryption only 56 bytes
|
| 73 |
|
|
* of the key affect all cipherbits.
|
| 74 |
|
|
*/
|
| 75 |
|
|
|
| 76 |
|
|
#define BLF_N 16 /* Number of Subkeys */
|
| 77 |
|
|
#define BLF_MAXKEYLEN ((BLF_N-2)*4) /* 448 bits */
|
| 78 |
|
|
|
| 79 |
|
|
/* Blowfish context */
|
| 80 |
|
|
typedef struct BlowfishContext {
|
| 81 |
|
|
u_int32_t S[4][256]; /* S-Boxes */
|
| 82 |
|
|
u_int32_t P[BLF_N + 2]; /* Subkeys */
|
| 83 |
|
|
} blf_ctx;
|
| 84 |
|
|
|
| 85 |
|
|
/* Raw access to customized Blowfish
|
| 86 |
|
|
* blf_key is just:
|
| 87 |
|
|
* Blowfish_initstate( state )
|
| 88 |
|
|
* Blowfish_expand0state( state, key, keylen )
|
| 89 |
|
|
*/
|
| 90 |
|
|
|
| 91 |
|
|
void Blowfish_encipher __P((blf_ctx *, u_int32_t *, u_int32_t *));
|
| 92 |
|
|
void Blowfish_decipher __P((blf_ctx *, u_int32_t *, u_int32_t *));
|
| 93 |
|
|
void Blowfish_initstate __P((blf_ctx *));
|
| 94 |
|
|
void Blowfish_expand0state __P((blf_ctx *, const u_int8_t *, u_int16_t));
|
| 95 |
|
|
void Blowfish_expandstate
|
| 96 |
|
|
__P((blf_ctx *, const u_int8_t *, u_int16_t, const u_int8_t *, u_int16_t));
|
| 97 |
|
|
|
| 98 |
|
|
/* Standard Blowfish */
|
| 99 |
|
|
|
| 100 |
|
|
void blf_key __P((blf_ctx *, const u_int8_t *, u_int16_t));
|
| 101 |
|
|
void blf_enc __P((blf_ctx *, u_int32_t *, u_int16_t));
|
| 102 |
|
|
void blf_dec __P((blf_ctx *, u_int32_t *, u_int16_t));
|
| 103 |
|
|
|
| 104 |
|
|
/* Converts u_int8_t to u_int32_t */
|
| 105 |
|
|
u_int32_t Blowfish_stream2word __P((const u_int8_t *, u_int16_t ,
|
| 106 |
|
|
u_int16_t *));
|
| 107 |
|
|
|
| 108 |
|
|
void blf_ecb_encrypt __P((blf_ctx *, u_int8_t *, u_int32_t));
|
| 109 |
|
|
void blf_ecb_decrypt __P((blf_ctx *, u_int8_t *, u_int32_t));
|
| 110 |
|
|
|
| 111 |
|
|
#endif // _NETINET_IP_BLF_H_
|
