Node.js

Create JWT Using HS256, HS384, or HS512

See more JSON Web Token (JWT) Examples

Demonstrates how to create a JWT using HS256, HS384, or HS512. (HS256 is JWT's acronym for HMAC-SHA256.) When HMAC is used, the secret is a shared secret (i.e. password) that both client and server know beforehand.

This example also demonstrates how to include time constraints:

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

Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

    // Demonstrates how to create an HMAC JWT using a shared secret (password).

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

    var jwt = new chilkat.Jwt();

    // Build the JOSE header
    var jose = new chilkat.JsonObject();
    // Use HS256.  Pass the string "HS384" or "HS512" to use a different algorithm.
    success = jose.AppendString("alg","HS256");
    success = jose.AppendString("typ","JWT");

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

    // Set the timestamp of when the JWT was created to now.
    var curDateTime = jwt.GenNumericDate(0);
    success = claims.AddIntAt(-1,"iat",curDateTime);

    // Set the "not process before" timestamp to now.
    success = claims.AddIntAt(-1,"nbf",curDateTime);

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

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

    var strJwt = jwt.CreateJwt(jose.Emit(),claims.Emit(),"secret");

    console.log(strJwt);

}

chilkatExample();