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66 lines
1.9 KiB
C
66 lines
1.9 KiB
C
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/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 1998, by Sun Microsystems, Inc.
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* All rights reserved.
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*/
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#ifndef _SYS_SHA1_CONSTS_H
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#define _SYS_SHA1_CONSTS_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* as explained in sha1.c, loading 32-bit constants on a sparc is expensive
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* since it involves both a `sethi' and an `or'. thus, we instead use `ld'
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* to load the constants from an array called `sha1_consts'. however, on
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* intel (and perhaps other processors), it is cheaper to load the constant
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* directly. thus, the c code in SHA1Transform() uses the macro SHA1_CONST()
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* which either expands to a constant or an array reference, depending on
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* the architecture the code is being compiled for.
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*/
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#include <sys/types.h> /* uint32_t */
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extern const uint32_t sha1_consts[];
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#if defined(__sparc)
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#define SHA1_CONST(x) (sha1_consts[x])
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#else
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#define SHA1_CONST(x) (SHA1_CONST_ ## x)
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#endif
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/* constants, as provided in FIPS 180-1 */
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#define SHA1_CONST_0 0x5a827999U
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#define SHA1_CONST_1 0x6ed9eba1U
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#define SHA1_CONST_2 0x8f1bbcdcU
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#define SHA1_CONST_3 0xca62c1d6U
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_SHA1_CONSTS_H */
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