Sign invoice incomplete

Hi @alyousfy77885 , I'm trying to mimic your code but I feel like there is missing steps in the below function. ` public function signInvoice(array $invoice, array $egs_unit, string $certificate, string $private_key): array {

    $signed_properties_props = [
        'sign_timestamp' => date('Y-m-d\TH:i:s\Z'),
        'certificate_hash' => $hash, // SignedSignatureProperties/SigningCertificate/CertDigest/<ds:DigestValue>SET_CERTIFICATE_HASH</ds:DigestValue>
        'certificate_issuer' => $issuer,
        'certificate_serial_number' => $serialNumber
    ];
    $ubl_signature_signed_properties_xml_string_for_signing = $zatca_simplified_tax_invoice->defaultUBLExtensionsSignedPropertiesForSigning($signed_properties_props);
    $ubl_signature_signed_properties_xml_string = $zatca_simplified_tax_invoice->defaultUBLExtensionsSignedProperties($signed_properties_props);

    $signed_properties_hash = base64_encode(openssl_digest($ubl_signature_signed_properties_xml_string_for_signing, 'sha256'));

    // UBL Extensions
    $ubl_signature_xml_string = $zatca_simplified_tax_invoice->defaultUBLExtensions(
        $invoice_hash, // <ds:DigestValue>SET_INVOICE_HASH</ds:DigestValue>
        $signed_properties_hash, // SignatureInformation/Signature/SignedInfo/Reference/<ds:DigestValue>SET_SIGNED_PROPERTIES_HASH</ds:DigestValue>
        $digital_signature,
        $certificate,
        $ubl_signature_signed_properties_xml_string
    );

    // Set signing elements
    $unsigned_invoice_str = $invoice_xml->saveXML();

    $unsigned_invoice_str = str_replace('SET_UBL_EXTENSIONS_STRING', $ubl_signature_xml_string, $unsigned_invoice_str);
    $unsigned_invoice_str = str_replace('SET_QR_CODE_DATA', $qr, $unsigned_invoice_str);

    $signed_invoice = new DOMDocument();
    $signed_invoice->loadXML($unsigned_invoice_str);

    $signed_invoice_string = $signed_invoice->saveXML();
    //$signed_invoice_string = $zatca_simplified_tax_invoice->signedPropertiesIndentationFix($signed_invoice_string);

    return [$signed_invoice_string, $invoice_hash, $qr,$public_key];
}

alyousfy77885 / Laravelzatca

Sign invoice incomplete #2