GetImage.cs

/// <summary>
/// Retrieve the image data from the signed xml document
/// </summary>
/// <param name="xmlFilePath">Path to the signed xml image document</param>
/// <returns>Byte[] of the image</returns>
public static byte[] GetImage(string xmlFilePath)
{
    var unsignedXMLDocument = UnsignXMLDocument(xmlFilePath);

    return DeserializeXMLToImage(unsignedXMLDocument);
}