(JavaScript) Create JWT using a Certificate's Private Key

See more JSON Web Token (JWT) Examples

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;

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

// Demonstrates how to create a JWT using an certificate's private key.

var cert = new CkCert();

// Load an ECC private key from a PEM file.
success = cert.LoadPfxFile("c:/temp/myPfx.pfx","pfxPassword");
if (success !== true) {
    console.log(cert.LastErrorText);
    return;
}

var jwt = new CkJwt();

// Build the JOSE header
var jose = new CkJsonObject();
// Note: The IsEcdsa function was added in Chilkat v10.1.0
if (cert.IsEcdsa() == true) {
    // Use ES256.  Pass the string "ES384" or "ES512" to use ECC with SHA-384 or SHA-512.
    jose.AppendString("alg","ES256");
}
else {
    // Probably RSA...
    // Use RS256.  Pass the string "RS384" or "RS512" to use RSA with SHA-384 or SHA-512.
    jose.AppendString("alg","RS256");
}

jose.AppendString("typ","JWT");

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

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

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

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

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

// Create the JWT token.
var token = jwt.CreateJwtCert(jose.Emit(),claims.Emit(),cert);

console.log(token);

// Example output:
// eyJhbGciOiJFUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJodHRwOi8vZXhhbXBsZS5vcmciLCJzdWIiOiJKb2huIiwiYXVkIjoiaHR0cDovL2V4YW1wbGUuY29tIiwiaWF0IjoxNDg1NzA4NzkyLCJuYmYiOjE0ODU3MDg3OTIsImV4cCI6MTQ4NTcxMjM5Mn0.wqsuyJpxJ073ox-lOiLFqG1lQocXe4hGf2XGZJRrO3qn0UusxI_bu3Gzky8gBsH4sA4u9TWZn5M-1wYMMIJk6Q