AES加密解密（附源码操作）

public class AESutil2
{
 
  public static String encrypt(String content, String secureKey)
  {
    try
    {
      if ((StringUtils.isEmpty(content)) ||
              (StringUtils.isEmpty(secureKey))) {
        return null;
      }
      KeyGenerator kgen = KeyGenerator.getInstance("AES");
 
      SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG");
      secureRandom.setSeed(secureKey.getBytes());
      kgen.init(128, secureRandom);
      SecretKey secretKey = kgen.generateKey();
      byte[] enCodeFormat = secretKey.getEncoded();
      SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");
      Cipher cipher = Cipher.getInstance("AES");
      byte[] byteContent = content.getBytes("utf-8");
      cipher.init(1, key);
      byte[] result = cipher.doFinal(byteContent);
      return encodeBASE64(result);
    }
    catch (Exception e) {
 
    }
    return null;
  }
 
  public static String decrypt(String content, String secureKey)
  {
    try
    {
      if ((StringUtils.isEmpty(content)) || (StringUtils.isEmpty(secureKey))) {
        return null;
      }
      KeyGenerator kgen = KeyGenerator.getInstance("AES");
      SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG");
      secureRandom.setSeed(secureKey.getBytes());
      kgen.init(128, secureRandom);
      SecretKey secretKey = kgen.generateKey();
      byte[] enCodeFormat = secretKey.getEncoded();
      SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");
      Cipher cipher = Cipher.getInstance("AES");
      cipher.init(2, key);
      byte[] base64Dec = Base64.decode(content);
      byte[] result = cipher.doFinal(base64Dec);
      return new String(result);
    }
    catch (Exception e)
    {
    }
    return null;
  }
 
  public static String encodeBASE64(byte[] content)
          throws Exception
  {
    if ((content == null) || (content.length == 0)) {
      return null;
    }
    try
    {
      return Base64.encode(content);
    }
    catch (Exception e)
    {
    }
    return null;
  }
 
  public static void main(String[] args) {
    String content = "5f3a87d591fa51720261e0b7e4e14c33";
    String password = "123456a";
    //加密
    System.out.println("加密前：" + content);
    String encryptResultStr = encrypt(content, password);
    System.out.println("加密后：" + encryptResultStr);
    //解密
    String decryptFrom = decrypt(encryptResultStr,password);
    System.out.println("解密后：" + decryptFrom);
  }
}