private static Bitmap ConvertTo(byte[] data)
        {
            int pixelCount = (data.Length / 4) + 2;
            int l = (int)Math.Sqrt(pixelCount) + 1;
            int k = 0;
            Bitmap b = new Bitmap(l, l);
            byte[] n = new byte[l * l * 4];
            Buffer.BlockCopy(BitConverter.GetBytes(data.Length), 0, n, 0, 4);
            Buffer.BlockCopy(data, 0, n, 4, data.Length);
            for (int x = 0; x < l; x++)
            {
                for (int y = 0; y < l; y++)
                {
                    int argb = BitConverter.ToInt32(n, k);
                    k += 4;
                    Color c = Color.FromArgb(argb/*n[k++], n[k++], n[k++], n[k++]*/);
                    b.SetPixel(x, y, c);
                }
            }
            return b;
        }

        private static byte[] ConvertFromBmp(Bitmap b)
        {
            int l = b.Width;
            int n = l * l * 4;
            byte[] buff = new byte[n];
            int k = 0;
            for (int x = 0; x < l; x++)
            {
                for (int y = 0; y < l; y++)
                {
                    Buffer.BlockCopy(BitConverter.GetBytes(b.GetPixel(x, y).ToArgb()), 0, buff, k, 4);
                    k += 4;
                }
            }
            int len = BitConverter.ToInt32(buff, 0);
            byte[] f = new byte[len];
            Buffer.BlockCopy(buff, 4, f, 0, f.Length);
            return f;
        }