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