package com.qxueyou.scc.base.util;


import org.apache.commons.lang3.StringUtils;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

import com.caucho.hessian.client.HessianProxyFactory;
//import com.qxueyou.scc.base.service.IConfigService;

/**
 * RSA加解密--调用远程加解密服务
 * @author 德虎
 *
 */
public class RSAUtils {

	private static Logger log = LogManager.getLogger(RSAUtils.class);
	
	private static RSAClient client;
	
	/**
	 * 构建远程RSA加解密客户端
	 */
	private static void buildClient() {
		try {
			String  url = null;
			HessianProxyFactory hessianFactory = new HessianProxyFactory();
			client = (RSAClient) hessianFactory.create(RSAClient.class, url);
		} catch (Exception e) {
			log.error(e, e);
		}
	}
	
	/**
	 * 调用远程加密服务对字符串加密
	 * @param string
	 * @return
	 */
	public static String encrypt(String string) {
		if (client == null) {
			buildClient();
		}
		if (StringUtils.isEmpty(string)) {
			return "";
		}
		try {
			return client.encrypt(string);
		} catch (Exception e) {
			log.error("加解密服务初始化错误:"+e.getMessage(), e);
		}
		return null;
	}
	
	/**
	 * 调用远程解密服务对密文字符串解决
	 * @param string
	 * @return
	 */
	public static String decrypt(String string) {
		if (client == null) {
			buildClient();
		}
		if (StringUtils.isEmpty(string)) {
			return "";
		}
		try {
			return client.decrypt(string);
		} catch (Exception e) {
			log.error(e, e);
		}
		return null;
	}

	/**
	 * Hessian本地接口
	 * @author user
	 *
	 */
	interface RSAClient {
		String encrypt(String string);
		String decrypt(String string);
	}

}