/* * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. * All rights reserved. * * 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 above 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. Neither the name of the project nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``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 PROJECT 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. */ #ifndef _RFC2040_RC5_H_ #define _RFC2040_RC5_H_ #include <sys/param.h> #include <sys/systm.h> #include <sys/mbuf.h> /* * if RC5_WORD change, W also may be changed. */ typedef u_int32_t RC5_WORD; #define W (32) #define WW (W / 8) #define ROT_MASK (W - 1) #define BB ((2 * W) / 8) #define SHLL(x, s) ((RC5_WORD)((x) << ((s)&ROT_MASK))) #define SHLR(x, s, w) ((RC5_WORD)((x) >> ((w)-((s)&ROT_MASK)))) #define SHRL(x, s, w) ((RC5_WORD)((x) << ((w)-((s)&ROT_MASK)))) #define SHRR(x, s) ((RC5_WORD)((x) >> ((s)&ROT_MASK))) #define ROTL(x, s, w) ((RC5_WORD)(SHLL((x), (s))|SHLR((x), (s), (w)))) #define ROTR(x, s, w) ((RC5_WORD)(SHRL((x), (s), (w))|SHRR((x), (s)))) #define P16 0xb7e1 #define Q16 0x9e37 #define P32 0xb7e15163 #define Q32 0x9e3779b9 #define P64 0xb7e151628aed2a6b #define Q64 0x9e3779b97f4a7c15 #if W == 16 #define Pw P16 #define Qw Q16 #elif W == 32 #define Pw P32 #define Qw Q32 #elif W == 64 #define Pw P64 #define Qw Q64 #endif #define RC5_ENCRYPT 1 #define RC5_DECRYPT 0 extern void set_rc5_expandkey __P((RC5_WORD *, u_int8_t *, size_t, int)); extern void rc5_encrypt_round16 __P((u_int8_t *, const u_int8_t *, const RC5_WORD *)); extern void rc5_decrypt_round16 __P((u_int8_t *, const u_int8_t *, const RC5_WORD *)); extern void rc5_cbc_process __P((struct mbuf *, size_t, size_t, RC5_WORD *, u_int8_t *, int)); #endif