1 /* 2 * Copyright (c) 1999 Kungliga Tekniska Hgskolan 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 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
