ThreeDes加解密

import java.io.UnsupportedEncodingException;
import java.security.Security;

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

import sun.io.ByteToCharConverter;
import sun.io.MalformedInputException;

public class ThreeDes {

	/**
	 * @param args  作者：avery_leo
	 */
	private static final String Algorithm = "DESede"; // 定义 加密算法,可用

	// DES,DESede,Blowfish

//	private static final byte[] keybyte = { 0x11, 0x22, 0x4F, 0x58,
//			(byte) 0x88, 0x10, 0x40, 0x38, 0x28, 0x25, 0x79, 0x51, (byte) 0xCB,
//			(byte) 0xDD, 0x55, 0x66, 0x77, 0x29, 0x74, (byte) 0x98, 0x30, 0x40,
//			0x36, (byte) 0xE2 };
	

	public ThreeDes() {
		
		Security.addProvider(new com.sun.crypto.provider.SunJCE());
		
	}

	// keybyte为加密密钥，长度为24字节
	// src为被加密的数据缓冲区（源）
	public  byte[] encryptMode(byte[] keybyte, byte[] src) {
		try {
			// 生成密钥
			SecretKey deskey = new SecretKeySpec(keybyte, Algorithm);

			// 加密
			Cipher c1 = Cipher.getInstance(Algorithm);
			c1.init(Cipher.ENCRYPT_MODE, deskey);
			return c1.doFinal(src);
		} catch (java.security.NoSuchAlgorithmException e1) {
			e1.printStackTrace();
		} catch (javax.crypto.NoSuchPaddingException e2) {
			e2.printStackTrace();
		} catch (java.lang.Exception e3) {
			e3.printStackTrace();
		}
		return null;
	}

	// keybyte为加密密钥，长度为24字节
	// src为加密后的缓冲区
	public  byte[] decryptMode(byte[] keybyte, byte[] src) {
		try {
			// 生成密钥
			SecretKey deskey = new SecretKeySpec(keybyte, Algorithm);

			// 解密
			Cipher c1 = Cipher.getInstance(Algorithm);
			c1.init(Cipher.DECRYPT_MODE, deskey);
			return c1.doFinal(src);
		} catch (java.security.NoSuchAlgorithmException e1) {
			e1.printStackTrace();
		} catch (javax.crypto.NoSuchPaddingException e2) {
			e2.printStackTrace();
		} catch (java.lang.Exception e3) {
			e3.printStackTrace();
		}
		return null;
	}

	// 转换成十六进制字符串
	public  String byte2hex(byte[] b) {
		String hs = "";
		String stmp = "";

		for (int n = 0; n < b.length; n++) {
			
			stmp = (java.lang.Integer.toHexString(b[n] & 0XFF));
		
			if (stmp.length() == 1)
				hs = hs + "0" + stmp;
			else
				hs = hs + stmp;
			if (n < b.length - 1)
				hs = hs + "";
		}
		return hs.toUpperCase();
	}

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		// 添加新安全算法,如果用JCE就要把它添加进去
		
		System.out.println("---yu----"+(60&255));
		ThreeDes thrdes = new ThreeDes();
		Security.addProvider(new com.sun.crypto.provider.SunJCE());
		// 24字节的密钥
		 byte[] keyBytes=new byte[24];
		 String key="abcdefghijklmnopqrstuvwxy";
		 keyBytes=key.getBytes();
		
		String szSrc = "13900000000";

		System.out.println("加密前的字符串:" + szSrc);

		byte[] encoded =thrdes. encryptMode(keyBytes, szSrc.getBytes());
		System.out.println("加密后的字符串:" + new String(encoded));
		System.out.println("----------"+thrdes.byte2hex(encoded));
		byte[] srcBytes =thrdes. decryptMode(keyBytes, encoded);
		System.out.println("解密后的字符串:" + (new String(srcBytes)));

	}

}