1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 1998, by Sun Microsystems, Inc. 24 * All rights reserved. 25 */ 26 27 #ifndef _SYS_SHA1_CONSTS_H 28 #define _SYS_SHA1_CONSTS_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 /* 37 * as explained in sha1.c, loading 32-bit constants on a sparc is expensive 38 * since it involves both a `sethi' and an `or'. thus, we instead use `ld' 39 * to load the constants from an array called `sha1_consts'. however, on 40 * intel (and perhaps other processors), it is cheaper to load the constant 41 * directly. thus, the c code in SHA1Transform() uses the macro SHA1_CONST() 42 * which either expands to a constant or an array reference, depending on 43 * the architecture the code is being compiled for. 44 */ 45 46 #include <sys/types.h> /* uint32_t */ 47 48 extern const uint32_t sha1_consts[]; 49 50 #if defined(__sparc) 51 #define SHA1_CONST(x) (sha1_consts[x]) 52 #else 53 #define SHA1_CONST(x) (SHA1_CONST_ ## x) 54 #endif 55 56 /* constants, as provided in FIPS 180-1 */ 57 58 #define SHA1_CONST_0 0x5a827999U 59 #define SHA1_CONST_1 0x6ed9eba1U 60 #define SHA1_CONST_2 0x8f1bbcdcU 61 #define SHA1_CONST_3 0xca62c1d6U 62 63 #ifdef __cplusplus 64 } 65 #endif 66 67 #endif /* _SYS_SHA1_CONSTS_H */ 68