简单的加密解密

  /// <summary>
  /// 字符串解密
  /// </summary>
  /// <param name="code">字符串</param>
  /// <returns></returns>
  public static string GetDecode(string code)
  {
    byte[] byt = Convert.FromBase64String(code);
    return Encoding.UTF8.GetString(byt);
  }

  /// <summary>
  /// 字符串加密
  /// </summary>
  /// <param name="code">字符串</param>
  /// <returns></returns>
  public static string GetEncode(string code)
  {
   byte[] byt = Encoding.ASCII.GetBytes(code);
   return Convert.ToBase64String(byt);

  }