/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
 *
 * Copyright 1998-2018 The OpenLDAP Foundation.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted only as authorized by the OpenLDAP
 * Public License.
 *
 * A copy of this license is available in file LICENSE in the
 * top-level directory of the distribution or, alternatively, at
 * <http://www.OpenLDAP.org/license.html>.
 */

/* This version is based on:
 *	$OpenBSD: sha1.h,v 1.8 1997/07/15 01:54:23 millert Exp $	*/

#ifndef _LUTIL_SHA1_H_
#define _LUTIL_SHA1_H_

#include <ldap_cdefs.h>
#include <ac/bytes.h>

#ifdef AC_INT4_TYPE

LDAP_BEGIN_DECL


/*
 * SHA-1 in C
 * By Steve Reid <steve@edmweb.com>
 */
#define LUTIL_SHA1_BYTES 20

/* This code assumes char are 8-bits and uint32 are 32-bits */
typedef ac_uint4 uint32;

typedef struct {
    uint32 state[5];
    uint32 count[2];
    unsigned char buffer[64];
} lutil_SHA1_CTX;

LDAP_LUTIL_F( void )
lutil_SHA1Transform
	LDAP_P((uint32 state[5], const unsigned char buffer[64]));

LDAP_LUTIL_F( void  )
lutil_SHA1Init
	LDAP_P((lutil_SHA1_CTX *context));

LDAP_LUTIL_F( void  )
lutil_SHA1Update
	LDAP_P((lutil_SHA1_CTX *context, const unsigned char *data, uint32 len));

LDAP_LUTIL_F( void  )
lutil_SHA1Final
	LDAP_P((unsigned char digest[20], lutil_SHA1_CTX *context));

LDAP_LUTIL_F( char * )
lutil_SHA1End
	LDAP_P((lutil_SHA1_CTX *, char *));

LDAP_LUTIL_F( char * )
lutil_SHA1File
	LDAP_P((char *, char *));

LDAP_LUTIL_F( char * )
lutil_SHA1Data
	LDAP_P((const unsigned char *, size_t, char *));

LDAP_END_DECL

#endif /* AC_INT4_TYPE */

#endif /* _LUTIL_SHA1_H_ */
