Node.js

PKCS11 Find Certificate with Key Usage on Smart Card or USB Token

See more PKCS11 Examples

Demonstrates how to find and return the 1st certificate on a smart card or USB token with a desired intended key usage.

Note: This example requires Chilkat v9.5.0.91 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 = "aetpkss1.dll";

    success = pkcs11.Initialize();
    if (success == false) {
        console.log(pkcs11.LastErrorText);
        return;
    }

    // Pass -1 for the slotID to open a session on the first non-empty slot.
    var slotID = -1;

    // Open a session.
    var readWrite = true;
    success = pkcs11.OpenSession(slotID,readWrite);
    if (success == false) {
        console.log(pkcs11.LastErrorText);
        return;
    }

    // Make it an authenticated session by calling Login.
    // 
    // If we don't authenticate, then we won't be able to see the private keys, and thus
    // we won't know which certificates have an associated private key stored on the smart card.

    // The smart card PIN is passed to the Login method.
    // userType 1 indicates a "Normal User".
    var userType = 1;
    var pin = "0000";
    success = pkcs11.Login(userType,pin);
    if (success == false) {
        console.log(pkcs11.LastErrorText);
        success = pkcs11.CloseSession();
        return;
    }

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

    var cert = new chilkat.Cert();

    // Find a certificate with an intended key usage.
    // Possible key usages to find are:
    // 
    // DigitalSignature
    // NonRepudiation
    // KeyEncipherment
    // DataEncipherment
    // CertificateSigning
    // CrlSigning
    // 
    // To find a cert having any one of several usages, pass a comma-separated list of usages:
    success = pkcs11.FindCert("keyUsage","NonRepudiation,DigitalSignature",cert);
    if (success == true) {
        console.log("Cert with private key: " + cert.SubjectCN);
    }
    else {
        console.log("No certificates having the intended key usage were found.");
    }

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

    // 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();