package?com.neusoft.avnc.lbs.common.tools;
/*
?*北京聯通全網有關網上訂購和點播接口URL加密算法
?*
?*采用3DES加密?ECB模式/使用PKCS7方式填充不足位
?*目前給的密鑰是192位（24個字節）經過base64編碼后的可見字符串
?*
?*作者：xuchean@gmail.com
?*/

import?java.net.URLEncoder;
import?java.security.Security;

import?javax.crypto.Cipher;
import?javax.crypto.SecretKey;
import?javax.crypto.spec.SecretKeySpec;

import?org.bouncycastle.jce.provider.BouncyCastleProvider;

import?sun.misc.base64Decoder;
import?sun.misc.base64Encoder;

/*
?*?配置：?從http://www.bouncycastle.org/latest_releases.html上下載對應JDK的“Provider”
?*?如JDK1.6對應bcprov-jdk16-137.jar?放入CLASSPATH即可.
?*/

public?class?ThreeDes?{
	
	private?static?Cipher?cipher?=?null;
	private?static?base64Encoder?base64Encoder?=?new?base64Encoder（）;
	private?static?base64Decoder?base64Decode?=?new?base64Decoder（）;
	public?static?final?String?ALGORITHM?=?“DESede/ECB/PKCS7Padding“;

	
	private?synchronized?static?Cipher?initCipher（int?mode?String?key）?{
		try?{
			//?添加新安全算法:PKCS7
			Security.addProvider（new?BouncyCastleProvider（））;
			SecretKey?desKey?=?new?SecretKeySpec（（new?base64Decoder（））.decodeBuffer（key）?ALGORITHM）;
			Cipher?tcipher?=?Cipher.getInstance（ALGORITHM）;
			tcipher.init（mode?desKey）;
			return?tcipher;
		}?catch?（Exception?e）?{
			e.printStackTrace（）;
			return?null;
		}
	}

	public?synchronized?static?String?encrypt（String?src?String?charset?String?key）?{
		try?{
			return?URLEncoder.encode（encrypt（src?key）?charset）;
		}?catch?（Exception?e）?{
			e.printStackTrace（）;
			return?null;
		}
	}

	public?synchronized?static?String?encrypt（String?src?String?key）?{
		
		return?base64Encoder.encode（encrypt（src.getBytes（）?key））;
	}
	
	public?synchronized?static?byte[]?encrypt（byte[]?src?String?key）?{
		try?{
			
			cipher?=?initCipher（Cip