package com.gy.util;

import org.junit.Test;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
import javax.crypto.Cipher;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESedeKeySpec;
import java.net.URLEncoder;
import java.security.Key;
import java.util.Date;

public class 
 
Des3Util {
    private static  String keys = "y321123geasy12345678901234567892";
    private static  byte[] kb = { 'a','b', 'c','d','e', 'f','g','h' };
    @Test
public  void test() throws Exception {
        Long time = new Date().getTime();
        String str = "des加解密校驗碼54088"+time;
        System.out
 
.println("str:"+str);
        String s = encodeStr(str);
        System.out.println(s);
        System.out.println(decodeStr(s));
        System.out.println("sss:" + URLEncoder.encode(s));
        String st = DateUtil.getFormatStrFromTimestamp(time);
        System.out.println("st:"+st);
    }

    /**
 
     * 加密
     * @param s 輸入字串
     * @return
*/
public static String encodeStr(String s){
        if(s==null)return null;
        try {
            byte[] key=new BASE64Decoder().decodeBuffer(keys);
            byte[] data=s.getBytes("UTF-8");
            byte[] str = encodebyecb(key, data);
            String result = new BASE64Encoder().encode(str);
            return result;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }
    public static String decodeStr(String s){
        try {
            byte[] bs = new BASE64Decoder().decodeBuffer(s);
            byte[] key=new BASE64Decoder().decodeBuffer(keys);
            byte[] str = decodebyecb(key, bs);
            String result = new String(str, "UTF-8");
         return result;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }
    private static byte[] encodebyecb(byte[] key, byte[] data)
            throws Exception {
        Key deskey = null;
        DESedeKeySpec spec = new DESedeKeySpec(key);
        SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede");
        deskey = keyfactory.generateSecret(spec);
        Cipher cipher = Cipher.getInstance("desede" + "/ECB/PKCS5Padding");
        cipher.init(Cipher.ENCRYPT_MODE, deskey);
        byte[] bOut = cipher.doFinal(data);
        return bOut;
    }
    private static byte[] decodebyecb(byte[] key, byte[] data)
            throws Exception {
        Key deskey = null;
        DESedeKeySpec spec = new DESedeKeySpec(key);
        SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede");
        deskey = keyfactory.generateSecret(spec);
        Cipher cipher = Cipher.getInstance("desede" + "/ECB/PKCS5Padding");
        cipher.init(Cipher.DECRYPT_MODE, deskey);
        byte[] bOut = cipher.doFinal(data);
        return bOut;

    }

}