(JavaScript) Create JWT using Smart Card

See more JSON Web Token (JWT) Examples

This example also demonstrates how to include time constraints:

• nbf: Not Before Time
• exp: Expiration Time
• iat: Issue At Time

Note: This example requires Chilkat v9.5.0.99 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;

// Demonstrates how to create a JWT using an RSA private key and certificate on a smart card.

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

var jwt = new CkJwt();
var cert = new CkCert();

success = cert.LoadFromSmartcard("");
if (success == false) {
    console.log(cert.LastErrorText);
    return;
}

// Build the JOSE header
var jose = new CkJsonObject();
// Use RS256.  Pass the string "RS384" or "RS512" to use RSA with SHA-384 or SHA-512.
jose.UpdateString("alg","RS256");
jose.UpdateString("typ","JWT");
jose.UpdateString("x5c[0]",cert.GetEncoded());

// Now build the JWT claims (also known as the payload)
var claims = new CkJsonObject();
claims.UpdateString("iss","http://example.org");
claims.UpdateString("sub","John");
claims.UpdateString("aud","http://example.com");

// Set the timestamp of when the JWT was created to now.
var curDateTime = jwt.GenNumericDate(0);
claims.UpdateInt("iat",curDateTime);

// Set the "not process before" timestamp to now.
claims.UpdateInt("nbf",curDateTime);

// Set the timestamp defining an expiration time (end time) for the token
// to be now + 1 hour (3600 seconds)
claims.UpdateInt("exp",curDateTime+3600);

// Produce the smallest possible JWT:
jwt.AutoCompact = true;

// Create the JWT token.  This is where the RSA signature is created.
var token = jwt.CreateJwtCert(jose.Emit(),claims.Emit(),cert);

console.log(token);