/*
 * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 *
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 *
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
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 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */

#ifndef _CRYPTO_SHA1_H_
#define _CRYPTO_SHA1_H_

#include <sys/types.h>

#ifdef  __cplusplus
extern "C" {
#endif

#define SHA_DIGEST_LENGTH       20
#define SHA1_RESULTLEN          SHA_DIGEST_LENGTH

typedef struct sha1_ctxt {
	union {
		u_int8_t        b8[20];
		u_int32_t       b32[5]; /* state (ABCDE) */
	} h;
	union {
		u_int8_t        b8[8];
		u_int32_t       b32[2];
		u_int64_t       b64[1]; /* # of bits, modulo 2^64 (msb first) */
	} c;
	union {
		u_int8_t        b8[64];
		u_int32_t       b32[16]; /* input buffer */
	} m;
	u_int8_t        count;          /* unused; for compatibility only */
} SHA1_CTX;

/* For compatibility with the other SHA-1 implementation. */
#define sha1_init(c)            SHA1Init(c)
#define sha1_loop(c, b, l)      SHA1Update(c, b, l)
#define sha1_result(c, b)       SHA1Final(b, c)

extern void SHA1Init(SHA1_CTX *);
extern void SHA1Update(SHA1_CTX *, const void *, size_t);
extern void SHA1Final(void *, SHA1_CTX *);

#ifdef  __cplusplus
}
#endif

#endif /*_CRYPTO_SHA1_H_*/
