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

See more PKCS11 Examples

Note: This example requires Chilkat v9.5.0.91 or later.

Note

This example is intended for running within a Chilkat.Js embedded JavaScript engine. All Chilkat JavaScript examples require Chilkat v11.4.0 or greater.

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 CkPkcs11();

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 CkCert();

// 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.");