(Node.js) Get Certificate Public Key from PEM

Demonstrates how to load a PEM file containing a certificate and access the public key.

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() {

    var cert = new chilkat.Cert();

    var success = cert.LoadFromFile("qa_data/pem/my_cert.pem");
    if (success !== true) {
        console.log(cert.LastErrorText);
        return;
    }

    // pubkey: PublicKey
    var pubkey = cert.ExportPublicKey();
    if (cert.LastMethodSuccess !== true) {
        console.log(cert.LastErrorText);
        return;
    }

    // Examine the public key as XML..
    console.log(pubkey.GetXml());


}

chilkatExample();