Tambahkan Tanda Tangan Digital ke File OTP

using (Signature signature = new Signature("sample.pdf"))
{
    // inisialisasi opsi digital dengan jalur file sertifikat
    DigitalSignOptions options = new DigitalSignOptions("certificate.pfx")
    {
        // sertifikasi kata sandi
        Password = "1234567890",
        // detail sertifikat digital
        Reason = "Sign",
        Contact = "JohnSmith",
        Location = "Office1",
        // gambar sebagai tampilan sertifikat digital pada halaman dokumen
        ImageFilePath = "sample.jpg",
        //
        AllPages = true,
        Width = 80,
        Height = 60,
        VerticalAlignment = VerticalAlignment.Bottom,
        HorizontalAlignment = HorizontalAlignment.Right,
        Margin = new Padding() {  Bottom = 10, Right = 10},
    };
    signature.Sign("signed.otp", options);
}