internal AsnKeyParser(byte[] Key)
 {
     parser = new AsnParser(Key);
 }
        internal AsnKeyParser(String pathname)
        {
            using (var reader = new BinaryReader(
                new FileStream(pathname, FileMode.Open, FileAccess.Read)))
            {
                var info = new FileInfo(pathname);

                parser = new AsnParser(reader.ReadBytes((int) info.Length));
            }
        }