1 /*
2 * Copyright (c) 1999 Kungliga Tekniska H�gskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * 3. Neither the name of KTH nor the names of its contributors may be
18 * used to endorse or promote products derived from this software without
19 * specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY KTH AND ITS CONTRIBUTORS ``AS IS'' AND ANY
22 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KTH OR ITS CONTRIBUTORS BE
25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
28 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
30 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
31 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
32
33 /* $Heimdal: hash.h,v 1.1 1999/03/22 19:16:25 joda Exp $
34 $NetBSD: hash.h,v 1.1.1.3 2002/09/12 12:41:42 joda Exp $ */
35
36 /* stuff in common between md4, md5, and sha1 */
37
38 #ifndef __hash_h__
39 #define __hash_h__
40
41 #include <stdlib.h>
42 #include <string.h>
43
44 #ifndef min
45 #define min(a,b) (((a)>(b))?(b):(a))
46 #endif
47
48 /* Vector Crays doesn't have a good 32-bit type, or more precisely,
49 int32_t as defined by <bind/bitypes.h> isn't 32 bits, and we don't
50 want to depend in being able to redefine this type. To cope with
51 this we have to clamp the result in some places to [0,2^32); no
52 need to do this on other machines. Did I say this was a mess?
53 */
54
55 #ifdef _CRAY
56 #define CRAYFIX(X) ((X) & 0xffffffff)
57 #else
58 #define CRAYFIX(X) (X)
59 #endif
60
61 static inline u_int32_t
cshift(u_int32_t x,unsigned int n)62 cshift (u_int32_t x, unsigned int n)
63 {
64 x = CRAYFIX(x);
65 return CRAYFIX((x << n) | (x >> (32 - n)));
66 }
67
68 #endif /* __hash_h__ */
69