PHP

Create JWT using a Brainpool EC Key

See more JSON Web Token (JWT) Examples

Demonstrates how to create a JWT using an EC private key. This is for JOSE headers having an "alg" member with any of the following values:

• BP160R1
• BP192R1
• BP224R1
• BP256R1
• BP320R1
• BP384R1
• BP512R1

This example also demonstrates how to include time constraints:

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

Chilkat2 PHP

<?php

use Chilkat2\JsonObject;
use Chilkat2\Jwt;
use Chilkat2\PrivateKey;

// Demonstrates how to create a JWT using a brainpool EC private key.

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

$privKey = new PrivateKey();

// Load a brainpool EC key.
try {
    $privKey->LoadPemFile('c:/qa_data/pem/ec_brainpool_privKey.pem');
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

// You can examine the curve name of the key you just loaded by getting the private in XML format:
// <ECCKeyValue curve="CURVE_NAME">...</ECCKeyValue>
echo $privKey->GetXml(), "\n";

$jwt = new Jwt();

// Build the JOSE header
$jose = new JsonObject();
// Use the brainpool curve name matching the private key you just loaded.
// Use "BP256R1", or "BP384R1", etc.
$jose->AppendString('alg', 'BP256R1');
$jose->AppendString('typ', 'JWT');

// Now build the JWT claims (also known as the payload)
$claims = new JsonObject();
$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.
$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.  This is where the ECC signature is created.
$token = $jwt->CreateJwtPk($jose->Emit(), $claims->Emit(), $privKey);

echo $token, "\n";