CryptTool 封装了一些加密工具方法-实用

CryptTool 封装了一些加密工具方法-实用(1)

package com.bonjovi.utils.encrypt;

import Java.io.*;
import Java.security.*;

import Javax.crypto.*;
import Javax.crypto.spec.SecretKeySpec;

/**
* CryptTool 封装了一些加密工具方法, 包括 3DES, MD5 等.
*
* @author bonjovi
* @version 1.0
* 2004-05-12
*/
public class CryptTool {

 public CryptTool() {
 }

 /**
  * 生成3DES密钥.
  *
  * @param key_byte seed key
  * @throws Exception
  * @return Javax.crypto.SecretKey Generated DES key
  */
 public static Javax.crypto.SecretKey genDESKey(byte[] key_byte)
  throws Exception {
  //    Javax.crypto.spec.DESKeySpec deskeyspec = new Javax.crypto.spec.DESKeySpec(
  //        key_byte);
  //    Javax.crypto.SecretKeyFactory skf = Javax.crypto.SecretKeyFactory.
  //        getInstance("DES", "SunJCE");
  //    return (Javax.crypto.SecretKey) skf.generateSecret(deskeyspec);
  //KeyGenerator kg = KeyGenerator.getInstance("DESede");
  SecretKey k = null;
  k = new SecretKeySpec(key_byte, "DESede");
  return k;
 }