Task("Sign")
    .IsDependentOn("Clean")
    .IsDependentOn("Restore")
    .IsDependentOn("Build")
    .Does(() =>
{
    var files = new string[] { "Core.dll", "Common.dll" };
    Sign(files, new SignToolSignSettings {
            TimeStampUri = new Uri("http://timestamp.digicert.com"),
            CertPath = "digitalcertificate.pfx",
            Password = "TopSecret"
    });
});