(PHP Extension) Italian FatturaPA (e-Invoice) Signed XML (CADES-BES P7M) using USB SmartCard Reader

Demonstrates Italian e-Invoice (FatturaPA) signing by using a private key stored on a USB smartcard reader.

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<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

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

$crypt = new CkCrypt2();
$crypt->put_VerboseLogging(true);

$cert = new CkCert();
// Use your smart card user PIN for signing.
$cert->put_SmartCardPin('0000');

$success = $cert->LoadFromSmartcard('');
if ($success == false) {
    print $cert->lastErrorText() . "\n";
    exit;
}

$success = $crypt->SetSigningCert($cert);
if ($success == false) {
    print $crypt->lastErrorText() . "\n";
    exit;
}

// The CadesEnabled property applies to all methods that create PKCS7 signatures. 
// To create a CAdES-BES signature, set this property equal to true.
$crypt->put_CadesEnabled(true);

$crypt->put_HashAlgorithm('sha256');

$signedAttrs = new CkJsonObject();
$signedAttrs->UpdateInt('contentType',1);
$signedAttrs->UpdateInt('signingTime',1);
$signedAttrs->UpdateInt('messageDigest',1);
$signedAttrs->UpdateInt('signingCertificateV2',1);
$crypt->put_SigningAttributes($signedAttrs->emit());

// Load XML such as the following:
//  <p:FatturaElettronica xmlns:p="http://ivaservizi.agenziaentrate.gov.it/docs/xsd/fatture/v1.2" versione="FPR12">
//     <FatturaElettronicaHeader>
//        <DatiTrasmissione>
// 	...
//        </DatiTrasmissione>
//        <CedentePrestatore>
// 	...
//        </CedentePrestatore>
//        <CessionarioCommittente>
// 	...
//        </CessionarioCommittente>
//     </FatturaElettronicaHeader>
//     <FatturaElettronicaBody>
//        <DatiGenerali>
//           <DatiGeneraliDocumento>
// 		...
//           </DatiGeneraliDocumento>
//        </DatiGenerali>
//        <DatiBeniServizi>
// 	...
//        </DatiBeniServizi>
//     </FatturaElettronicaBody>
//  </p:FatturaElettronica>

$inputXmlPath = 'c:/someDir/e-Invoice.xml';
$outputP7mPath = 'c:/someDir/signed.p7m';

// Create the CAdES-BES attached signature, which contains the original data.
$success = $crypt->CreateP7M($inputXmlPath,$outputP7mPath);
if ($success == false) {
    print $crypt->lastErrorText() . "\n";
    exit;
}

print 'Success.' . "\n";

?>