des-cbc加密解密工具

package des;

import java.security.Key;
import java.security.spec.AlgorithmParameterSpec;

import sun.misc.BASE64Decoder;

import javax.crypto.*;
import javax.crypto.spec.DESKeySpec;
import javax.crypto.spec.IvParameterSpec;

public class CryptoTools {
private final byte[] DESkey = “01234567”.getBytes(“UTF-8”);// 设置密钥
private final byte[] DESIV = {0x52, (byte) 0xd3, (byte) 0x91, (byte) 0xac, 0x3e, (byte) 0xad, 0x10, 0x63};// 设置向量

   private AlgorithmParameterSpec iv = null;// 加密算法的参数接口，IvParameterSpec是它的一个实现  
   private Key key = null;  

   public CryptoTools() throws Exception {  
       DESKeySpec keySpec = new DESKeySpec(DESkey);// 设置密钥参数  
       iv = new IvParameterSpec(DESIV);// 设置向量  
       SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");// 获得密钥工厂  
       key = keyFactory.generateSecret(keySpec);// 得到密钥对象  
   }  

   public byte[] encode(String data) throws Exception {  
       Cipher enCipher = Cipher.getInstance("DES/CBC/PKCS5Padding");// 得到加密对象Cipher  
       enCipher.init(Cipher.ENCRYPT_MODE, key, iv);// 设置工作模式为加密模式，给出密钥和向量  
       byte[] pasByte = enCipher.doFinal(data.getBytes("utf-8"));  

       return pasByte;  
   }  

   public String decode(String data) throws Exception {  
       Cipher deCipher = Cipher.getInstance("DES/CBC/PKCS5Padding");  
       deCipher.init(Cipher.DECRYPT_MODE, key, iv);  
       BASE64Decoder base64Decoder = new BASE64Decoder();  

       byte[] pasByte = deCipher.doFinal(base64Decoder.decodeBuffer(data));  

       return new String(pasByte, "UTF-8");  
   }  
   public static void main(String[] args) {  
       try {  
           String test = "2088888888";  
           CryptoTools des = new CryptoTools();//自定义密钥  
           System.out.println("加密前的字符："+test);  
           System.out.println("加密后的字符："+des.encode(test));  
       } catch (Exception e) {  
           e.printStackTrace();  
       }  
   }  

}