/*
 * Copyright 2010 The Apache Software Foundation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*
 * XSEC
 *
 * DSIGKeyInfoDEREncoded := DEREncodedKeyValue - used for conveying DER-encoded keys
 *
 * Author(s): Scott Cantor
 *
 * $Id:$
 *
 */

#ifndef DSIGKEYINFODERENCODED_INCLUDE
#define DSIGKEYINFODERENCODED_INCLUDE

#include <xsec/dsig/DSIGKeyInfo.hpp>
#include <xsec/utils/XSECPlatformUtils.hpp>

XSEC_DECLARE_XERCES_CLASS(DOMElement);

/**
 * @ingroup pubsig
 */

/**
 * @brief The class for \<ds11::DEREncodedKeyValue\> nodes in a KeyInfo list.
 *
 * Class for holding DER-encoded key information.
 *
 */



class DSIG_EXPORT DSIGKeyInfoDEREncoded : public DSIGKeyInfo {

public:

	/** @name Constructors and Destructors */
	//@{

	/**
	 * \brief Constructor used when XML exists.
	 *
	 * This constructor is used by other user interface classes to load
	 * an existing DOM structure into the Name element.
	 *
	 * @param env Environment operating within.
	 * @param nameNode DOMNode to load information from
	 */

	DSIGKeyInfoDEREncoded(const XSECEnv * env, XERCES_CPP_NAMESPACE_QUALIFIER DOMNode *nameNode);

	/**
	 * \brief Constructor used when XML needs to be created.
	 *
	 * This constructor is used by interface objects to
	 * create a DSIGKeyInfoName object that can then be used
	 * to create the required XML.
	 *
	 * @param env Operating environment
	 */

	DSIGKeyInfoDEREncoded(const XSECEnv * env);

	/**
	 * \brief Destructor
	 */

	virtual ~DSIGKeyInfoDEREncoded();

	//@}

	/** @name Load and Get functions */
	//@{

	/**
	 * \brief Load an existing XML structure into this object.
	 */

	virtual void load(void);

	/**
	 * \brief Get key name - unimplemented for DEREncodedKeyValue
	 */

	virtual const XMLCh * getKeyName(void) const {return NULL;}

	/**
	 * \brief Get the key data
	 *
	 * Returns a pointer to the buffer containing the data string.
	 *
	 * @returns A pointer to the XMLCh buffer containing the data
	 */

	virtual const XMLCh * getData(void) const {return mp_data;};

	//@}

	/**@name Create and set functions */
	//@{
	
	/**
	 * \brief Create a new DEREncodedKeyValue element in the current document.
	 *
	 * Creates a new DEREncodedKeyValue element and sets the data with the string
	 * passed in.
	 *
	 * @param data Value to set the DEREncodedKeyValue to
	 * @returns The newly created DOMElement with the structure underneath.
	 */

	XERCES_CPP_NAMESPACE_QUALIFIER DOMElement * createBlankDEREncoded(const XMLCh * data);

	/**
	 * \brief Set the value of the DEREncodedKeyValue to a new string.
	 *
	 * Uses the passed in string to set a new value in the DOM structure.
	 *
	 * @param data Value to set in DEREncodedKeyValue
	 */

	void setData(const XMLCh * data);

	//@}

	/** @name Information Functions */
	//@{
	
	/**
	 * \brief Return type of this KeyInfo element
	 */
	
	virtual keyInfoType getKeyInfoType(void) const {return DSIGKeyInfo::KEYINFO_DERENCODED;}

	//@}

private:

	DSIGKeyInfoDEREncoded();			        // Non-implemented constructor

	const XMLCh			* mp_data;				// The Data stored in the XML file
	XERCES_CPP_NAMESPACE_QUALIFIER DOMNode				
						* mp_dataTextNode;		// Text node containing the name

};



#endif /* #define DSIGKEYINFODERENCODED_INCLUDE */