crypto/dist/heimdal/lib/hcrypto/hash.h

   1 /*
   2  * Copyright (c) 1999 Kungliga Tekniska Högskolan
   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 17450 2006-05-05 11:11:43Z lha $
  34    $NetBSD$ */
  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 #include <stddef.h>
  44 #ifdef KRB5
  45 #include <krb5-types.h>
  46 #endif
  47
  48 #ifndef min
  49 #define min(a,b) (((a)>(b))?(b):(a))
  50 #endif
  51
  52 /* Vector Crays doesn't have a good 32-bit type, or more precisely,
  53    int32_t as defined by <bind/bitypes.h> isn't 32 bits, and we don't
  54    want to depend in being able to redefine this type.  To cope with
  55    this we have to clamp the result in some places to [0,2^32); no
  56    need to do this on other machines.  Did I say this was a mess?
  57    */
  58
  59 #ifdef _CRAY
  60 #define CRAYFIX(X) ((X) & 0xffffffff)
  61 #else
  62 #define CRAYFIX(X) (X)
  63 #endif
  64
  65 static inline uint32_t
  66 cshift (uint32_t x, unsigned int n)
  67 {
  68     x = CRAYFIX(x);
  69     return CRAYFIX((x << n) | (x >> (32 - n)));
  70 }
  71
  72 #endif /* __hash_h__ */