code: private static byte[] aes(byte[] input, byte[] key, int mode) {
  		try {
  			SecretKey secretKey = new SecretKeySpec(key, AES_ALG);
  			Cipher cipher = Cipher.getInstance(AES_ALG);
  			cipher.init(mode, secretKey);
  			return cipher.doFinal(input);
  		} catch (GeneralSecurityException e) {
  			throw ExceptionUtil.unchecked(e);
  		}
  	}
docs: 使用AES加密或解密无编码的原始字节数组, 返回无编码的字节数组结果.
  
  @param input 原始字节数组
  @param key 符合AES要求的密钥
  @param mode Cipher.ENCRYPT_MODE 或 Cipher.DECRYPT_MODE