(PHP Extension) Create JWT using a Certificate's Private Key

See more JSON Web Token (JWT) Examples

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

Chilkat PHP Downloads PHP Extension for Windows, Linux, MacOS, Alpine Linux, Solaris

<?php

include("chilkat.php");
// Use "chilkat_9_5_0.php" for versions of Chilkat < 10.0.0

// 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.

$cert = new CkCert();

// Load an ECC private key from a PEM file.
$success = $cert->LoadPfxFile('c:/temp/myPfx.pfx','pfxPassword');
if ($success != true) {
    print $cert->lastErrorText() . "\n";
    exit;
}

$jwt = new CkJwt();

// Build the JOSE header
$jose = new CkJsonObject();
// Note: The IsEcdsa function was added in Chilkat v10.1.0
if ($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)
$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.
$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->put_AutoCompact(true);

// Create the JWT token.
$token = $jwt->createJwtCert($jose->emit(),$claims->emit(),$cert);

print $token . "\n";

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

?>