Node.js

ScMinidriver - Get Public Keys from Smart Card Key Container

See more ScMinidriver Examples

Demonstrates how to query a key container on a smart card (or USB token) to get the public part of the private keys that are present. A key container can hold two separate private keys -- one in the "signature" position, and the other in the "key exchange" position. 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.

    //  Chilkat recommends the following free tool for interactively examining the contents of your smart card
    //  through the ScMinidriver interface:  MGTEK Tool for Minidriver enabled Smart Cards

    //  Let's first look at our smart card..
    //  Here's the view of our Gemalto (Thales) IDPrime MD T=0 smart card in the MGTEK tool:

    //  (image:https://example-code.com/images/gemalto_idprime_after_key_import.JPG/endImage)

    var scmd = new chilkat.ScMinidriver();

    //  First we need to acquire a context to the smart card in the reader where it is inserted.
    //  Reader names (smart card readers or USB tokens) can be discovered
    //  via List Readers or Find Smart Cards
    var readerName = "Alcor Micro USB Smart Card Reader 0";
    success = scmd.AcquireContext(readerName);
    if (success == false) {
        console.log(scmd.LastErrorText);
        return;
    }

    //  If successful, the name of the currently inserted smart card is available:
    console.log("Card name: " + scmd.CardName);

    //  We likely shouldn't need to authenticate with the smart card (use a PIN) to simply get a public key,
    //  so we can skip the PIN authenticatin step..

    //  Let's get the key(s) present in Container #7.
    //  In our case (shown in the image above), there is a private key in the "key exchange" position, but no key in the "signature" position.
    var pubkey_sig = new chilkat.PublicKey();
    var pubkey_kex = new chilkat.PublicKey();

    success = scmd.GetContainerKeys(7,pubkey_sig,pubkey_kex);
    if (success == false) {
        console.log(scmd.LastErrorText);
        return;
    }

    if (pubkey_sig.Empty == true) {
        console.log("No signature key is present.");
    }
    else {
        console.log("Signature key:");
        console.log(pubkey_sig.GetPem(true));
    }

    if (pubkey_kex.Empty == true) {
        console.log("No Key Exchange key is present.");
    }
    else {
        console.log("Key Exchange key:");
        console.log(pubkey_kex.GetPem(true));
    }

    scmd.DeleteContext();

    console.log("Success.");

    //  Here's the output of the above sample code:

    //  Card name: IDPrime MD T=0
    //  No signature key is present.
    //  Key Exchange key:
    //  -----BEGIN RSA PUBLIC KEY-----
    //  MIIBCgKCAQEAsXeRhM55P13FbpNcXAMR3olbw2Wa6keZIHu5YTZYUBTlYWId+pNi
    //  wUz3zFIEo+0IfYR0H27ybIycQO+1IIzJofUFNMAL3tZps2OKPlsjuCPls6kXpXhv
    //  /gvhux8LrCtp4PcKWqJ6QVOZKChc7WAx40qFWzHi57ueqRTv3x0kESqGg/VjsqyT
    //  Evb55psJO2RsfhLT7+YVh3hImRM3RDaJdkTkPuOxeFyT6N7VXD09329sLuS3QkUb
    //  E9zEKDnz9X3d8dEQdJhSI9ba5fxl8R7fu8pB67ElfzFml96X1jLFtzy1pzOT5Fc4
    //  ROcaqlYckVzdBq9sxezm6MYmDBjNAcibRwIDAQAB
    //  -----END RSA PUBLIC KEY-----

}

chilkatExample();