(Node.js) SFTP use Cert's Private Key from PFX (.pfx/.p12)

Demonstrates how to use the private key associated with a certificate from a .pfx/.p12 file.

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() {

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

    var cert = new chilkat.Cert();

    var pfxFilepath = "qa_data/pfx/my.pfx";
    var pfxPassword = "secret";

    // A PFX typically contains certificates in the chain of authentication.
    // The Chilkat cert object will choose the certificate w/
    // private key farthest from the root authority cert.
    // To access all the certificates in a PFX, use the 
    // Chilkat certificate store object instead.
    var success = cert.LoadPfxFile(pfxFilepath,pfxPassword);
    if (success !== true) {
        console.log(cert.LastErrorText);
        return;
    }

    // Get the private key.  
    // privKey: PrivateKey
    var privKey = cert.ExportPrivateKey();
    if (cert.LastMethodSuccess == false) {
        console.log(cert.LastErrorText);
        return;
    }

    var privKeyPem = privKey.GetPkcs8Pem();
    if (privKey.LastMethodSuccess == false) {
        console.log(privKey.LastErrorText);
        return;
    }

    var sshKey = new chilkat.SshKey();
    success = sshKey.FromOpenSshPrivateKey(privKeyPem);
    if (success == false) {
        console.log(sshKey.LastErrorText);
        return;
    }

    // Connect to an SSH/SFTP server
    var sftp = new chilkat.SFtp();
    success = sftp.Connect("sftp.example.com",22);
    if (success == false) {
        console.log(sftp.LastErrorText);
        return;
    }

    // Authenticate with the SSH server using a username + private key.
    // (The private key serves as the password.  The username identifies
    // the SSH user account on the server.)
    success = sftp.AuthenticatePk("mySshLogin",sshKey);
    if (success == false) {
        console.log(sftp.LastErrorText);
        return;
    }

    console.log("OK, the connection and authentication with the SSH server is completed.");

    // This example is only to show the connection + authentication using a private key associated with a certificate in the Windows certificate store...

}

chilkatExample();