(Node.js) 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.

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOS

var os = require('os');
if (os.platform() == 'win32') {  
  var chilkat = require('@chilkat/ck-node23-win64'); 
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node23-linux-arm');
    } else if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node23-linux-arm64');
    } else {
        var chilkat = require('@chilkat/ck-node23-linux-x64');
    }
} else if (os.platform() == 'darwin') {
  var chilkat = require('@chilkat/ck-node23-mac-universal');
}

function chilkatExample() {

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

    var crypt = new chilkat.Crypt2();
    crypt.VerboseLogging = true;

    var cert = new chilkat.Cert();
    // Use your smart card user PIN for signing.
    cert.SmartCardPin = "0000";

    var success = cert.LoadFromSmartcard("");
    if (success == false) {
        console.log(cert.LastErrorText);
        return;
    }

    success = crypt.SetSigningCert(cert);
    if (success == false) {
        console.log(crypt.LastErrorText);
        return;
    }

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

    crypt.HashAlgorithm = "sha256";

    var signedAttrs = new chilkat.JsonObject();
    signedAttrs.UpdateInt("contentType",1);
    signedAttrs.UpdateInt("signingTime",1);
    signedAttrs.UpdateInt("messageDigest",1);
    signedAttrs.UpdateInt("signingCertificateV2",1);
    crypt.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>

    var inputXmlPath = "c:/someDir/e-Invoice.xml";
    var outputP7mPath = "c:/someDir/signed.p7m";

    // Create the CAdES-BES attached signature, which contains the original data.
    success = crypt.CreateP7M(inputXmlPath,outputP7mPath);
    if (success == false) {
        console.log(crypt.LastErrorText);
        return;
    }

    console.log("Success.");

}

chilkatExample();