/*
 * Copyright 2014 Federal Chancellery Austria
 * MOA-ID has been developed in a cooperation between BRZ, the Federal
 * Chancellery Austria - ICT staff unit, and Graz University of Technology.
 *
 * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
 * the European Commission - subsequent versions of the EUPL (the "Licence");
 * You may not use this work except in compliance with the Licence.
 * You may obtain a copy of the Licence at:
 * http://www.osor.eu/eupl/
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the Licence is distributed on an "AS IS" basis,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Licence for the specific language governing permissions and
 * limitations under the Licence.
 *
 * This product combines work with different licenses. See the "NOTICE" text
 * file for details on the various modules and licenses.
 * The "NOTICE" text file is part of the distribution. Any derivative works
 * that you distribute must include a readable copy of the "NOTICE" text file.
 */
package at.gv.egovernment.moa.id.commons.api.data;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.Serializable;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.UnrecoverableKeyException;

import org.apache.commons.lang3.SerializationUtils;

import at.gv.egiz.eaaf.core.impl.utils.KeyStoreUtils;
import at.gv.egovernment.moa.logging.Logger;


/**
 * @author tlenz 
 *
 */
public class BPKDecryptionParameters implements Serializable{

	private static final long serialVersionUID = 1L;
	
	private byte[] keyStore = null;
	private String keyStorePassword = null;
	private String keyAlias = null;
	private String keyPassword = null;
	
	/**
	 * @return
	 * @throws IOException 
	 */
	public PrivateKey getPrivateKey() {
		InputStream in = null;
		try {
			in = new ByteArrayInputStream(keyStore);
			KeyStore store = KeyStoreUtils.loadKeyStore(in , keyStorePassword);
			
		    char[] chPassword = " ".toCharArray();
		    if (keyPassword != null)
		      chPassword = keyPassword.toCharArray();
		    
//		    Certificate test = store.getCertificate(keyAlias);
//		    Base64Utils.encode(test.getPublicKey().getEncoded());
		    
			return (PrivateKey) store.getKey(keyAlias, chPassword);
			
			
		} catch (KeyStoreException e) {
			Logger.error("Can not load private key from keystore.", e);
			
		} catch (IOException e) {
			Logger.error("Can not load private key from keystore.", e);
			
		} catch (UnrecoverableKeyException e) {
			Logger.error("Can not load private key from keystore.", e);

		} catch (NoSuchAlgorithmException e) {
			Logger.error("Can not load private key from keystore.", e);
			
		} finally {
			if (in != null) {
				try {
					in.close();
				} catch (IOException e) {
					Logger.warn("Close InputStream failed." , e);
				}
			}			
		}
		
		return null;		
	}
	
	public byte[] serialize() {
		return SerializationUtils.serialize(this);
		
	}

	/**
	 * @param keyStore the keyStore to set
	 */
	public void setKeyStore(byte[] keyStore) {
		this.keyStore = keyStore;
	}

	/**
	 * @param keyStorePassword the keyStorePassword to set
	 */
	public void setKeyStorePassword(String keyStorePassword) {
		this.keyStorePassword = keyStorePassword;
	}

	/**
	 * @param keyAlias the keyAlias to set
	 */
	public void setKeyAlias(String keyAlias) {
		this.keyAlias = keyAlias;
	}

	/**
	 * @param keyPassword the keyPassword to set
	 */
	public void setKeyPassword(String keyPassword) {
		this.keyPassword = keyPassword;
	}
	
	
	
	
}