Java加密算法 PBE，java加密算法pbe,import java.

Java加密算法 PBE，java加密算法pbe,import java.

import java.util.Arrays;  import javax.crypto.Cipher;  import javax.crypto.SecretKey;  import javax.crypto.SecretKeyFactory;  import javax.crypto.spec.PBEKeySpec;  import javax.crypto.spec.PBEParameterSpec;  /**  * PBE算法 对称加密 password-based encryption  * @author stone  * @date 2014-03-10 23:41:35  */  public class PBE {      static final String KEY_ALGORITHM = "PBEWithMD5AndDES";  //  static byte[] salt = "xiaoyang".getBytes(); // 盐：Salt must be 8 bytes long      static byte[] salt = "哈皮aa".getBytes(); // 盐：Salt must be 8 bytes long  哈皮，在utf8中是6个字节      static int iterationCount = 888; //循环次数      static Cipher cipher;      public static void main(String[] args) throws Exception {          byte[] encrypt = encrypt("中华人民admin*&(*S&6");          System.out.println("PBE加密后：" + Arrays.toString(encrypt));          System.out.println("PBE解密后：" + decrypt(encrypt));      }      /**      * 使用PBE 算法 加密      * @return  加密后的字符数组      * @throws Exception      */      static byte[] encrypt(String str) throws Exception {          cipher = Cipher.getInstance(KEY_ALGORITHM);          //使用SecretKeyFactory 生成key          SecretKeyFactory factory = SecretKeyFactory.getInstance(KEY_ALGORITHM);          PBEKeySpec keySpec = new PBEKeySpec("shizongyin".toCharArray());          SecretKey key = factory.generateSecret(keySpec);          System.out.println("key:" + Arrays.toString(key.getEncoded()));          cipher.init(Cipher.ENCRYPT_MODE, key, new PBEParameterSpec(salt, iterationCount));//使用加密模式初始化 密钥          return cipher.doFinal(str.getBytes()); //按单部分操作加密或解密数据，或者结束一个多部分操作。      }      /**      *       * @param encrypt      * @return      * @throws Exception      */      static String decrypt(byte[] encrypt) throws Exception {          cipher = Cipher.getInstance(KEY_ALGORITHM);          //使用SecretKeyFactory 生成key          SecretKeyFactory factory = SecretKeyFactory.getInstance(KEY_ALGORITHM);          PBEKeySpec keySpec = new PBEKeySpec("shizongyin".toCharArray());          SecretKey key = factory.generateSecret(keySpec);          System.out.println("key:" + Arrays.toString(key.getEncoded()));          cipher.init(Cipher.DECRYPT_MODE, key, new PBEParameterSpec(salt, iterationCount));//使用加密模式初始化 密钥          byte[] result = cipher.doFinal(encrypt); //按单部分操作加密或解密数据，或者结束一个多部分操作。          return new String(result);      }  }