content: package org.superboot.utils;
  
  import javax.crypto.Cipher;
  import javax.crypto.SecretKey;
  import javax.crypto.SecretKeyFactory;
  import javax.crypto.spec.DESKeySpec;
  import javax.crypto.spec.IvParameterSpec;
  
  
  /**
   * <b> DES加密算法 </b>
   * <p>
   * 功能描述:JAVA版与C#通用的DES加密解密工具
   * </p>
   */
  public class DESUtil {
  
      /**
       * 秘钥
       */
      private static final String PASSWORD_CRYPT_KEY = "70402100";
  
      /**
       * <b> 功能 : 加密方法 </b>
       *
       * @param message
       * @param key
       * @return
       * @throws Exception
       * @作者 张帅
       * @创建日期 2014-8-28
       */
      public static byte[] encrypt(String message, String key) throws Exception {
          Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
          DESKeySpec desKeySpec = new DESKeySpec(key.getBytes("UTF-8"));
          SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
          SecretKey secretKey = keyFactory.generateSecret(desKeySpec);
          IvParameterSpec iv = new IvParameterSpec(key.getBytes("UTF-8"));
          cipher.init(Cipher.ENCRYPT_MODE, secretKey, iv);
          return cipher.doFinal(message.getBytes("UTF-8"));
      }
  
      /**
       * <b> 功能 : 解密方法 </b>
       *
       * @param message
       * @return
       * @throws Exception
       * @作者 张帅
       * @创建日期 2014-8-28
       */
      public static String decrypt(String message) throws Exception {
          byte[] bytesrc = convertHexString(message);
          Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
          DESKeySpec desKeySpec = new DESKeySpec(PASSWORD_CRYPT_KEY.getBytes("UTF-8"));
          SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
          SecretKey secretKey = keyFactory.generateSecret(desKeySpec);
          IvParameterSpec iv = new IvParameterSpec(PASSWORD_CRYPT_KEY.getBytes("UTF-8"));
          cipher.init(Cipher.DECRYPT_MODE, secretKey, iv);
          byte[] retByte = cipher.doFinal(bytesrc);
          return new String(retByte);
      }
  
      /**
       * <b> 功能 : 加密方法 </b>
       *
       * @param value
       * @return
       * @作者 张帅
       * @创建日期 2014-8-28
       */
      public static String encrypt(String value) {
          String result = "";
          try {
              value = java.net.URLEncoder.encode(value, "utf-8");
              result = toHexString(encrypt(value, PASSWORD_CRYPT_KEY))
                      .toUpperCase();
          } catch (Exception ex) {
              ex.printStackTrace();
              return "";
          }
          return result;
      }
  
      public static byte[] convertHexString(String ss) {
          byte digest[] = new byte[ss.length() / 2];
          for (int i = 0; i < digest.length; i++) {
              String byteString = ss.substring(2 * i, 2 * i + 2);
              int byteValue = Integer.parseInt(byteString, 16);
              digest[i] = (byte) byteValue;
          }
          return digest;
      }
  
      public static String toHexString(byte b[]) {
          StringBuffer hexString = new StringBuffer();
          for (int i = 0; i < b.length; i++) {
              String plainText = Integer.toHexString(0xff & b[i]);
              if (plainText.length() < 2) {
                  plainText = "0" + plainText;
              }
              hexString.append(plainText);
          }
          return hexString + "";
      }
  
  
      public static void main(String[] args) throws Exception {
          //待加密数据
          String value = "CU1408200003R1";
          //加密
          String a = encrypt(value);
          System.out.println("加密后的数据为:" + a);
          //解密
          System.out.println("解密后的数据为:" + decrypt(a));
      }
  
  }
  