projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 1c79356b A |
1 | /* |
| 2 | * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * Redistribution and use in source and binary forms, with or without | |
| 6 | * modification, are permitted provided that the following conditions | |
| 7 | * are met: | |
| 8 | * 1. Redistributions of source code must retain the above copyright | |
| 9 | * notice, this list of conditions and the following disclaimer. | |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 | * notice, this list of conditions and the following disclaimer in the | |
| 12 | * documentation and/or other materials provided with the distribution. | |
| 13 | * 3. Neither the name of the project nor the names of its contributors | |
| 14 | * may be used to endorse or promote products derived from this software | |
| 15 | * without specific prior written permission. | |
| 16 | * | |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND | |
| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE | |
| 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 27 | * SUCH DAMAGE. | |
| 28 | */ | |
| 29 | ||
| 30 | #ifndef _RFC2040_RC5_H_ | |
| 31 | #define _RFC2040_RC5_H_ | |
| 32 | ||
| 33 | #include <sys/param.h> | |
| 34 | #include <sys/systm.h> | |
| 35 | #include <sys/mbuf.h> | |
| 36 | ||
| 37 | /* | |
| 38 | * if RC5_WORD change, W also may be changed. | |
| 39 | */ | |
| 40 | typedef u_int32_t RC5_WORD; | |
| 41 | ||
| 42 | #define W (32) | |
| 43 | #define WW (W / 8) | |
| 44 | #define ROT_MASK (W - 1) | |
| 45 | #define BB ((2 * W) / 8) | |
| 46 | ||
| 47 | #define SHLL(x, s) ((RC5_WORD)((x) << ((s)&ROT_MASK))) | |
| 48 | #define SHLR(x, s, w) ((RC5_WORD)((x) >> ((w)-((s)&ROT_MASK)))) | |
| 49 | #define SHRL(x, s, w) ((RC5_WORD)((x) << ((w)-((s)&ROT_MASK)))) | |
| 50 | #define SHRR(x, s) ((RC5_WORD)((x) >> ((s)&ROT_MASK))) | |
| 51 | ||
| 52 | #define ROTL(x, s, w) ((RC5_WORD)(SHLL((x), (s))|SHLR((x), (s), (w)))) | |
| 53 | #define ROTR(x, s, w) ((RC5_WORD)(SHRL((x), (s), (w))|SHRR((x), (s)))) | |
| 54 | ||
| 55 | #define P16 0xb7e1 | |
| 56 | #define Q16 0x9e37 | |
| 57 | #define P32 0xb7e15163 | |
| 58 | #define Q32 0x9e3779b9 | |
| 59 | #define P64 0xb7e151628aed2a6b | |
| 60 | #define Q64 0x9e3779b97f4a7c15 | |
| 61 | ||
| 62 | #if W == 16 | |
| 63 | #define Pw P16 | |
| 64 | #define Qw Q16 | |
| 65 | #elif W == 32 | |
| 66 | #define Pw P32 | |
| 67 | #define Qw Q32 | |
| 68 | #elif W == 64 | |
| 69 | #define Pw P64 | |
| 70 | #define Qw Q64 | |
| 71 | #endif | |
| 72 | ||
| 73 | #define RC5_ENCRYPT 1 | |
| 74 | #define RC5_DECRYPT 0 | |
| 75 | ||
| 76 | extern void set_rc5_expandkey __P((RC5_WORD *, u_int8_t *, size_t, int)); | |
| 77 | extern void rc5_encrypt_round16 __P((u_int8_t *, const u_int8_t *, | |
| 78 | const RC5_WORD *)); | |
| 79 | extern void rc5_decrypt_round16 __P((u_int8_t *, const u_int8_t *, | |
| 80 | const RC5_WORD *)); | |
| 81 | extern void rc5_cbc_process __P((struct mbuf *, size_t, size_t, RC5_WORD *, | |
| 82 | u_int8_t *, int)); | |
| 83 | ||
| 84 | #endif |