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- /*
- * 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
-