Node.js

PKCS11 Sign PDF using Certificate and Private Key on Smart Card / USB Token

See more PKCS11 Examples

Sample code showing how to use PKCS11 to sign a PDF with a certificate and private key stored on a smart card or USB token.

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

Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

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

    //  Note: Chilkat's PKCS11 implementation runs on Windows, Linux, Mac OS X, and other supported operating systems.

    var pkcs11 = new chilkat.Pkcs11();

    pkcs11.SharedLibPath = "C:/Program Files (x86)/Gemalto/IDGo 800 PKCS#11/IDPrimePKCS1164.dll";
    var pin = "0000";
    var userType = 1;

    //  Establish a PKCS11 logged-on session using the driver (.so, .dylib, or .dll) as specified in the SharedLibPath above.
    success = pkcs11.QuickSession(userType,pin);
    if (success == false) {
        console.log(pkcs11.LastErrorText);
        return;
    }

    //  Get the certificate (on the smart card) that has a private key.
    //  There are other ways to locate a certificate on the HSM.
    //  This example assumes there is a single certificate w/ private key.
    var cert = new chilkat.Cert();
    success = pkcs11.FindCert("privateKey","",cert);
    if (success == true) {
        console.log("Cert with private key: " + cert.SubjectCN);
    }
    else {
        console.log("No certificates having a private key were found.");
        success = pkcs11.CloseSession();
        return;
    }

    //  --------------------------------------------------------------------------
    //  At this point, we have the cert to be used for signing.
    //  Our PDF signing code is the same as for a cert obtained from any other source..

    var pdf = new chilkat.Pdf();

    //  Load a PDF to be signed.
    success = pdf.LoadFile("qa_data/pdf/hello.pdf");
    if (success == false) {
        console.log(pdf.LastErrorText);
        success = pkcs11.CloseSession();
        return;
    }

    var json = new chilkat.JsonObject();

    json.UpdateInt("page",1);
    json.UpdateString("appearance.y","top");
    json.UpdateString("appearance.x","left");
    json.UpdateString("appearance.fontScale","10.0");
    json.UpdateString("signingAlgorithm","pss");
    json.UpdateString("hashAlgorithm","sha256");

    var i = 0;
    json.I = i;
    json.UpdateString("appearance.text[i]","Digitaly signed by: Xyz Widgets, Inc.");
    i = i+1;
    json.I = i;
    json.UpdateString("appearance.text[i]","current_dt");
    i = i+1;
    json.I = i;
    json.UpdateString("appearance.text[i]","blah blah blah");

    //  The certificate is internally linked to the Pkcs11 object, which is currently in an authenticated session.
    success = pdf.SetSigningCert(cert);

    success = pdf.SignPdf(json,"qa_output/out.pdf");
    if (success == false) {
        console.log(pdf.LastErrorText);
        success = pkcs11.CloseSession();
        return;
    }

    //  --------------------------------------------------------------------------

    //  Revert to an unauthenticated session by calling Logout.
    success = pkcs11.Logout();
    if (success == false) {
        console.log(pkcs11.LastErrorText);
        success = pkcs11.CloseSession();
        return;
    }

    //  When finished, close the session.
    //  It is important to close the session (memory leaks will occur if the session is not properly closed).
    success = pkcs11.CloseSession();
    if (success == false) {
        console.log(pkcs11.LastErrorText);
        return;
    }

    console.log("Success.");

}

chilkatExample();