(PHP ActiveX) Sign PDF using ARSS (Aruba Remote Signing Service)

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Demonstrates how to sign a PDF using the Aruba Remote Signing Service (ARSS).

Note: This example requires Chilkat v9.5.0.96 or greater.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Pdf')
$pdf = new COM("Chilkat.Pdf");

// Load a PDF to be signed.
$success = $pdf->LoadFile('qa_data/pdf/hello.pdf');
if ($success == 0) {
    print $pdf->LastErrorText . "\n";
    exit;
}

// Options for signing are specified in JSON.
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.JsonObject')
$json = new COM("Chilkat.JsonObject");

// Indicate that we want an LTV-enabled signature
$json->UpdateBool('ltvOcsp',1);

// Define the appearance of the signature.
$json->UpdateInt('page',1);
$json->UpdateString('appearance.y','top');
$json->UpdateString('appearance.x','left');
$json->UpdateString('appearance.fontScale','10.0');
$json->UpdateString('appearance.text[0]','Digitally signed by: cert_cn');
$json->UpdateString('appearance.text[1]','current_dt');
$json->UpdateString('appearance.text[2]','This is an LTV-enabled signature.');

// Load the certificate used for signing.  The certificate's private key is stored on 
// the Aruba.it server and the signing will happen remotely using the
// ARSS (Aruba Remote Signing Service).
// However, we still need the certificate locally (without private key).
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Cert')
$cert = new COM("Chilkat.Cert");
$success = $cert->LoadFromFile('qa_data/certs/myCert.cer');
if ($success == 0) {
    print $cert->LastErrorText . "\n";
    exit;
}

// To sign using the Aruba Remote Signing Service, 
// add the following lines of code to specify your authentication credentials,
// and the ID of the certificate w/ private key on the server to be used.
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.JsonObject')
$jsonArss = new COM("Chilkat.JsonObject");

// Set the "service" equal to "ARSS" to tell Chilkat to use ARSS for signing.
$jsonArss->UpdateString('service','ARSS');
// Specify the certificate ID, such as "AS0"
// This certificate should match the certificate loaded in the above code.
$jsonArss->UpdateString('certID','YOUR_ARSS_CERT_ID');
$jsonArss->UpdateString('otpPwd','YOUR_OTP_PWD');
$jsonArss->UpdateString('typeOtpAuth','demoprod');
$jsonArss->UpdateString('user','YOUR_ARSS_USERNAME');
$jsonArss->UpdateString('userPWD','YOUR_ARSS_PASSWORD');
$success = $cert->SetCloudSigner($jsonArss);

// Tell the pdf object to use the certificate for signing.
$success = $pdf->SetSigningCert($cert);
if ($success == 0) {
    print $pdf->LastErrorText . "\n";
    exit;
}

// Chilkat will build the signed PDF locally, but will (internally) use ARSS
// to do the RSA sign hash operation.
$success = $pdf->SignPdf($json,'qa_output/hello_ltv_signed.pdf');
if ($success == 0) {
    print $pdf->LastErrorText . "\n";
    exit;
}

print 'The PDF has been successfully cryptographically signed with long-term validation.' . "\n";

?>