高分求3des算法,请各位不吝赐教!(十万火急,在线等候)分不够可以再加

Question

public String encryptString(String myinfo) { 
//添加新安全算法,如果用JCE就要把它添加进去 
Security.addProvider(new com.sun.crypto.provider.SunJCE()); 
String Algorithm="DES"; //定义 加密算法,可用 DES,DESede,Blowfish 
String ss="";
try { 
//生成密钥 
KeyGenerator keygen = KeyGenerator.getInstance(Algorithm); 
SecretKey deskey = keygen.generateKey(); 

//加密 
// System.out.println("加密前的二进串:"+byte2hex(myinfo.getBytes())); 
// System.out.println("加密前的信息:"+myinfo); 
Cipher c1 = Cipher.getInstance(Algorithm); 
c1.init(Cipher.ENCRYPT_MODE,deskey); 

byte[] cipherByte=c1.doFinal(myinfo.getBytes()); 
ss=byte2hex(cipherByte);
// System.out.println("加密后的二进串:"+ss); 
//解密 
c1 = Cipher.getInstance(Algorithm); 
c1.init(Cipher.DECRYPT_MODE,deskey); 
byte[] clearByte=c1.doFinal(cipherByte); 
// System.out.println("解密后的二进串:"+byte2hex(clearByte)); 
// System.out.println("解密后的信息:"+(new String(clearByte))); 

} 
catch (java.security.NoSuchAlgorithmException e1) {e1.printStackTrace();} 
catch (javax.crypto.NoSuchPaddingException e2) {e2.printStackTrace();} 
catch (java.lang.Exception e3) {e3.printStackTrace();} 
return ss;
} 

Answer 1

连通给的key是经过base64加密过的，需要解密，
   private static byte[] TrippleEncrypt(byte[] data,String key )
   {
     try{
       System.out.println("加密前的二进串:"+byte2hex(data));
       System.out.println("加密前的信息:"+new String(data));       byte[] rawkey = new sun.misc.BASE64Decoder().decodeBuffer(key);//这个地方重要
        DESedeKeySpec keyspec = new DESedeKeySpec(rawkey);
        SecretKeyFactory keyfactory = SecretKeyFactory.getInstance(algorithm);
        Key enkey = keyfactory.generateSecret(keyspec);
        Cipher c1 = Cipher.getInstance(algorithm);
        //Cipher c1 = Cipher.getInstance("DESede/ECB/PKCS5Padding");
        c1.init(Cipher.ENCRYPT_MODE,enkey);
        byte[] cipherByte=c1.doFinal(data);
        return cipherByte;
      }
      catch(Exception e)
      {
        return null;
      }
   }

Answer 2

import java.io.*;
import javax.crypto.*;
import javax.crypto.spec.*;
import javax.crypto.spec.DESedeKeySpec;
import java.security.spec.KeySpec;
import java.security.spec.AlgorithmParameterSpec;
import java.security.*;public class DesEdeEncrypter
{
   private static String Des = "Des";
   private static String Desede = "DESede";
   private static String DesBlowfish = "Blowfish";
   private static String algorithm =Desede;
   public static String byte2hex(byte[] b) //二行制转字符串
      {
       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();
      }   private static byte[] TrippleEncrypt(byte[] data,String key )
   {
     try{
       System.out.println("加密前的二进串:"+byte2hex(data));
       System.out.println("加密前的信息:"+new String(data));       //byte[] rawkey = key.getBytes();
       byte[] rawkey = new sun.misc.BASE64Decoder().decodeBuffer(key);
       DESedeKeySpec keyspec = new DESedeKeySpec(rawkey);
       SecretKeyFactory keyfactory = SecretKeyFactory.getInstance(algorithm);
       Key enkey = keyfactory.generateSecret(keyspec);
       Cipher c1 = Cipher.getInstance(algorithm);
       c1.init(Cipher.ENCRYPT_MODE,enkey);
       byte[] cipherByte=c1.doFinal(data);
       System.out.println("加密后的二进串:"+byte2hex(cipherByte));
       return cipherByte;
      }
      catch(Exception e)
      {
        return null;
      }
   }   private static byte[] TrippleDecrypt(byte[] data,String key )
   {     try{
       System.out.println("解密前的二进串:"+byte2hex(data));       //byte[] rawkey = key.getBytes();
       byte[] rawkey = new sun.misc.BASE64Decoder().decodeBuffer(key);
       DESedeKeySpec keyspec = new DESedeKeySpec(rawkey);
       SecretKeyFactory keyfactory = SecretKeyFactory.getInstance(algorithm);
       Key enkey = keyfactory.generateSecret(keyspec);
       Cipher c1 = Cipher.getInstance(algorithm);
       c1.init(Cipher.DECRYPT_MODE,enkey);
       byte[] cipherByte=c1.doFinal(data);
       System.out.println("解密后的二进串:"+byte2hex(cipherByte));
       System.out.println("解密后的信息:"+(new String(cipherByte)));
       return  cipherByte;
     }catch(Exception e){
       return null;
     }
   }
  public static void main(String[] args) {
    String info = "9000$13013890874$100201$2004-04-13 10:40:22";
    byte[] x = TrippleEncrypt(info.getBytes(),"cf7FjFMnafiiK40vnuTf9vsWnXpBo6qR");
    //byte[] x = DESEncrypt(info.getBytes(),"cf7FjFMnafiiK40vnuTf9vsWnXpBo6qR");
    System.out.print(new sun.misc.BASE64Encoder().encode(x));
    byte[] y = TrippleDecrypt(x,"cf7FjFMnafiiK40vnuTf9vsWnXpBo6qR");
  }
}