| 1 | /*
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| 2 | * Copyright (c) 1999 Kungliga Tekniska Högskolan
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| 3 | * (Royal Institute of Technology, Stockholm, Sweden).
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| 4 | * All rights reserved.
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| 5 | *
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| 6 | * Redistribution and use in source and binary forms, with or without
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| 7 | * modification, are permitted provided that the following conditions
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| 8 | * are met:
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| 9 | *
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| 10 | * 1. Redistributions of source code must retain the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer.
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| 12 | *
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| 13 | * 2. Redistributions in binary form must reproduce the above copyright
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| 14 | * notice, this list of conditions and the following disclaimer in the
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| 15 | * documentation and/or other materials provided with the distribution.
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| 16 | *
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| 17 | * 3. Neither the name of KTH nor the names of its contributors may be
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| 18 | * used to endorse or promote products derived from this software without
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| 19 | * specific prior written permission.
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| 20 | *
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| 21 | * THIS SOFTWARE IS PROVIDED BY KTH AND ITS CONTRIBUTORS ``AS IS'' AND ANY
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| 22 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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| 24 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KTH OR ITS CONTRIBUTORS BE
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| 25 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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| 26 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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| 27 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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| 28 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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| 29 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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| 30 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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| 31 | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
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| 32 |
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| 33 | /* $Id$ */
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| 34 |
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| 35 | /* stuff in common between md4, md5, and sha1 */
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| 36 |
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| 37 | #ifndef __hash_h__
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| 38 | #define __hash_h__
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| 39 |
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| 40 | #ifdef KRB5
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| 41 | #include <krb5-types.h>
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| 42 | #endif
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| 43 | #include <roken.h>
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| 44 |
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| 45 | #ifndef min
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| 46 | #define min(a,b) (((a)>(b))?(b):(a))
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| 47 | #endif
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| 48 |
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| 49 | /* Vector Crays doesn't have a good 32-bit type, or more precisely,
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| 50 | int32_t as defined by <bind/bitypes.h> isn't 32 bits, and we don't
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| 51 | want to depend in being able to redefine this type. To cope with
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| 52 | this we have to clamp the result in some places to [0,2^32); no
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| 53 | need to do this on other machines. Did I say this was a mess?
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| 54 | */
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| 55 |
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| 56 | #ifdef _CRAY
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| 57 | #define CRAYFIX(X) ((X) & 0xffffffff)
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| 58 | #else
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| 59 | #define CRAYFIX(X) (X)
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| 60 | #endif
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| 61 |
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| 62 | static inline uint32_t
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| 63 | cshift (uint32_t x, unsigned int n)
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| 64 | {
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| 65 | x = CRAYFIX(x);
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| 66 | return CRAYFIX((x << n) | (x >> (32 - n)));
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| 67 | }
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| 68 |
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| 69 | static inline uint64_t
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| 70 | cshift64 (uint64_t x, unsigned int n)
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| 71 | {
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| 72 | return ((uint64_t)x << (uint64_t)n) | ((uint64_t)x >> ((uint64_t)64 - (uint64_t)n));
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| 73 | }
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| 74 |
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| 75 | #endif /* __hash_h__ */
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