VerifyImage.cs

/// <summary>
/// Verify the integrity of the image by checking the signature using the certificate public key
/// </summary>
/// <param name="xmlFilePath">Path to the signed xml image document</param>
/// <param name="certificateBuffer">The public key certificate byte[] to verify the integrity of the signed xml image document</param>
/// <param name="certPassword">Private key certificate Password</param>
/// <returns>True - If image integrity is intact. False - If image has been tampered with</returns>
public static bool VerifyImage(string xmlFilePath, byte[] certificateBuffer, string certPassword)
{
    var certificate = new X509Certificate2(certificateBuffer, certPassword);

    return VerifyXMLDocument(xmlFilePath, certificate);
}