JavaScript

Export a Private Key as a JWK

Demonstrates the Chilkat PrivateKey.GetJwk method, which exports the key as a compact JWK (JSON Web Key). It takes no arguments; binary values use Base64url without padding.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: JWK is the JSON key format used across modern web security — JWT, OAuth, OpenID Connect. Exporting to it lets you publish a key into a JWK Set or hand it to a web framework that speaks JWK. Note this is the private JWK: it includes the private parameters (d and, for RSA, the CRT values), so it is highly sensitive — publish only the public JWK derived from ToPublicKey when sharing.

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.

JavaScript

var success = false;

//  Load a private key to export.
var privKey = new CkPrivateKey();
success = privKey.LoadPemFile("qa_data/private.pem");
if (success == false) {
    console.log(privKey.LastErrorText);
    return;
}

//  Export as a compact JWK (JSON Web Key).  Binary values use Base64url without padding.
var jwk = privKey.GetJwk();
if (privKey.LastMethodSuccess == false) {
    console.log(privKey.LastErrorText);
    return;
}

console.log(jwk);