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support session share between application cluster nodes and cross domain application nodes.support good application session monitor and session data statitic module.demo site http://session.bbossgroups.com/

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/*
 *  Copyright 2008 bbossgroups
 *
 *  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.
 */
package org.frameworkset.security.ecc;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

/**
 * Title: ECCHelper.java 
 * Description: 
 * bboss workgroup
 * Copyright (c) 2008
 * @Date 2014年4月22日
 * @author biaoping.yin
 * @version 3.8.0
 */
public class ECCHelper {
	
	public static final String  ECC_Flexi = "FlexiECIES";
	public static final String  ECC_BC = "BCECIES";	
	public static final String  RSA = "RSA";
	public static final String  BCRSA = "BCRSA";
	private static Map ecccoderClasses = new ConcurrentHashMap();
	private static Map ecccoders = new ConcurrentHashMap();
	static 
	{
		ecccoderClasses.put(ECC_Flexi, "org.frameworkset.security.ecc.FlexiECCCoder");
		ecccoderClasses.put(ECC_BC, "org.frameworkset.security.ecc.BCECCoder");
		ecccoderClasses.put(RSA, "org.frameworkset.security.rsa.RsaCoder");
		ecccoderClasses.put(BCRSA, "org.frameworkset.security.rsa.BCRSACoder");
		
		
	}
	public static ECCCoderInf getECCCoder()
	{
		return getECCCoder(RSA);
	}
	public static ECCCoderInf getECCCoder(String type)
	{
		if(type == null)
			type = RSA;
		ECCCoderInf ecccoderInf = ecccoders.get(type);
		if(ecccoderInf != null)
			return ecccoderInf;
		synchronized(ecccoders)
		{
			ecccoderInf = ecccoders.get(type);
			if(ecccoderInf != null)
				return ecccoderInf;
			String clazz = ecccoderClasses.get(type);
			if(clazz == null)
				throw new java.lang.IllegalArgumentException("不支持的加密类型:"+type+"，系统只支持"+RSA+","+ECC_Flexi+","+ECC_BC+","+BCRSA+"四种机制.");
			try {
				ecccoderInf = (ECCCoderInf)Class.forName(clazz).newInstance();
			} catch (InstantiationException e) {
				throw new java.lang.IllegalArgumentException("不支持的加密类型:"+type+"，系统只支持"+RSA+","+ECC_Flexi+","+ECC_BC+","+BCRSA+"四种机制.",e);
			} catch (IllegalAccessException e) {
				throw new java.lang.IllegalArgumentException("不支持的加密类型:"+type+"，系统只支持"+RSA+","+ECC_Flexi+","+ECC_BC+","+BCRSA+"四种机制.",e);
			} catch (ClassNotFoundException e) {
				throw new java.lang.IllegalArgumentException("不支持的加密类型:"+type+"，系统只支持"+RSA+","+ECC_Flexi+","+ECC_BC+","+BCRSA+"四种机制.",e);
			}
			ecccoders.put(type, ecccoderInf);
			return ecccoderInf;
		}
	}

}