/** 

 * XML Security Library (http://www.aleksey.com/xmlsec).

 *

 * Simple Big Numbers processing.

 *

 * This is free software; see Copyright file in the source

 * distribution for preciese wording.

 * 

 * Copyright (C) 2002-2003 Aleksey Sanin <aleksey@aleksey.com>

 * Portion Copyright © 2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. 

 */

#ifndef __XMLSEC_BN_H__

#define __XMLSEC_BN_H__    

#ifdef __cplusplus

extern "C" {

#endif /* __cplusplus */ 

#include <libxml2_tree.h>

#include "xmlsec_config.h"

#include "xmlsec_xmlsec.h"

#include "xmlsec_buffer.h"

typedef xmlSecBuffer						xmlSecBn,

								*xmlSecBnPtr;

/**

 * xmlSecBnFormat:

 * @xmlSecBnBase64:		the base64 decoded binary blob.

 * @xmlSecBnHex:		the hex number.

 * @xmlSecBnDec:		the decimal number.

 *

 * The big numbers formats.

 */

typedef enum {

    xmlSecBnBase64,

    xmlSecBnHex,

    xmlSecBnDec

} xmlSecBnFormat;

XMLSEC_EXPORT xmlSecBnPtr	xmlSecBnCreate			(xmlSecSize size);

XMLSEC_EXPORT void		xmlSecBnDestroy			(xmlSecBnPtr bn);

XMLSEC_EXPORT int		xmlSecBnInitialize		(xmlSecBnPtr bn,

								 xmlSecSize size);

XMLSEC_EXPORT void		xmlSecBnFinalize		(xmlSecBnPtr bn);

XMLSEC_EXPORT xmlSecByte*	xmlSecBnGetData			(xmlSecBnPtr bn);

XMLSEC_EXPORT int		xmlSecBnSetData			(xmlSecBnPtr bn,

								 const xmlSecByte* data,

								 xmlSecSize size);

XMLSEC_EXPORT xmlSecSize	xmlSecBnGetSize			(xmlSecBnPtr bn);

XMLSEC_EXPORT void		xmlSecBnZero			(xmlSecBnPtr bn);

XMLSEC_EXPORT int		xmlSecBnFromString		(xmlSecBnPtr bn,

								 const xmlChar* str,

								 xmlSecSize base);

XMLSEC_EXPORT xmlChar*		xmlSecBnToString		(xmlSecBnPtr bn,

								 xmlSecSize base);

XMLSEC_EXPORT int		xmlSecBnFromHexString		(xmlSecBnPtr bn,

								 const xmlChar* str);

XMLSEC_EXPORT xmlChar*		xmlSecBnToHexString		(xmlSecBnPtr bn);

XMLSEC_EXPORT int		xmlSecBnFromDecString		(xmlSecBnPtr bn,

								 const xmlChar* str);

XMLSEC_EXPORT xmlChar*		xmlSecBnToDecString		(xmlSecBnPtr bn);

XMLSEC_EXPORT int		xmlSecBnMul			(xmlSecBnPtr bn,

								 int multiplier);

XMLSEC_EXPORT int		xmlSecBnDiv			(xmlSecBnPtr bn,

								 int divider,

								 int* mod);

XMLSEC_EXPORT int		xmlSecBnAdd			(xmlSecBnPtr bn, 

								 int delta); 

XMLSEC_EXPORT int		xmlSecBnReverse			(xmlSecBnPtr bn);

XMLSEC_EXPORT int		xmlSecBnCompare			(xmlSecBnPtr bn,

								 const xmlSecByte* data,

								 xmlSecSize dataSize);

XMLSEC_EXPORT int		xmlSecBnCompareReverse		(xmlSecBnPtr bn,

								 const xmlSecByte* data,

								 xmlSecSize dataSize);

XMLSEC_EXPORT int		xmlSecBnGetNodeValue		(xmlSecBnPtr bn, 

								 xmlNodePtr cur,

								 xmlSecBnFormat format,

								 int reverse);

XMLSEC_EXPORT int 		xmlSecBnSetNodeValue		(xmlSecBnPtr bn, 

								 xmlNodePtr cur, 

								 xmlSecBnFormat format,

								 int reverse,

								 int addLineBreaks);

XMLSEC_EXPORT int 		xmlSecBnBlobSetNodeValue	(const xmlSecByte* data,

								 xmlSecSize dataSize,

								 xmlNodePtr cur, 

								 xmlSecBnFormat format,

								 int reverse,

								 int addLineBreaks);

#ifdef __cplusplus

}

#endif /* __cplusplus */

#endif /* __XMLSEC_BN_H__ */