87 lines
2.9 KiB
C
87 lines
2.9 KiB
C
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/*
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _RFC2040_RC5_H_
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#define _RFC2040_RC5_H_
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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/*
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* if RC5_WORD change, W also may be changed.
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*/
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typedef u_int32_t RC5_WORD;
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#define W (32)
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#define WW (W / 8)
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#define ROT_MASK (W - 1)
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#define BB ((2 * W) / 8)
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#define SHLL(x, s) ((RC5_WORD)((x) << ((s)&ROT_MASK)))
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#define SHLR(x, s, w) ((RC5_WORD)((x) >> ((w)-((s)&ROT_MASK))))
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#define SHRL(x, s, w) ((RC5_WORD)((x) << ((w)-((s)&ROT_MASK))))
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#define SHRR(x, s) ((RC5_WORD)((x) >> ((s)&ROT_MASK)))
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#define ROTL(x, s, w) ((RC5_WORD)(SHLL((x), (s))|SHLR((x), (s), (w))))
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#define ROTR(x, s, w) ((RC5_WORD)(SHRL((x), (s), (w))|SHRR((x), (s))))
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#define P16 0xb7e1
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#define Q16 0x9e37
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#define P32 0xb7e15163
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#define Q32 0x9e3779b9
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#define P64 0xb7e151628aed2a6b
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#define Q64 0x9e3779b97f4a7c15
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#if W == 16
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#define Pw P16
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#define Qw Q16
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#elif W == 32
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#define Pw P32
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#define Qw Q32
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#elif W == 64
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#define Pw P64
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#define Qw Q64
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#endif
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#define RC5_ENCRYPT 1
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#define RC5_DECRYPT 0
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extern void set_rc5_expandkey __P((RC5_WORD *, u_int8_t *, size_t, int));
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extern void rc5_encrypt_round16 __P((u_int8_t *, const u_int8_t *,
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const RC5_WORD *));
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extern void rc5_decrypt_round16 __P((u_int8_t *, const u_int8_t *,
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const RC5_WORD *));
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extern void rc5_cbc_process __P((struct mbuf *, size_t, size_t, RC5_WORD *,
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u_int8_t *, int));
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#endif
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