JWT FM example

<?php

require_once __DIR__ . '/vendor/autoload.php';

use Jose\Component\Core\JWK;
use Jose\Component\Core\JWKSet;
use Jose\Easy\Build;
use Jose\Easy\Load;
use Jose\Component\KeyManagement\JWKFactory;

$time = time(); // The current time

$privateKey = JWKFactory::createFromKeyFile(
    __DIR__ . '/config/secrets/dev/private.key',
    null,
    [
        'use' => 'sig',
    ]
);

$publicKey = JWKFactory::createFromKeyFile(
    __DIR__ . '/config/secrets/dev/public.key',
    null,
    [
        'use' => 'sig',
    ]
);

$privateKey2 = JWKFactory::createFromKeyFile(
    __DIR__ . '/config/secrets/dev/private2.key',
    null,
    [
        'use' => 'sig',
    ]
);

$publicKey2 = JWKFactory::createFromKeyFile(
    __DIR__ . '/config/secrets/dev/public2.key',
    null,
    [
        'use' => 'sig',
    ]
);

$jws = Build::jws() // We build a JWS
    ->exp($time + 3600) // The "exp" claim
    ->iat($time) // The "iat" claim
    ->nbf($time) // The "nbf" claim
    ->jti('0123456789', true) // The "jti" claim.
    // The second argument indicate this pair shall be duplicated in the header
    ->alg('RS256') // The signature algorithm. A string or an algorithm class.
    ->iss('issuer') // The "iss" claim
    ->aud('audience1') // Add an audience ("aud" claim)
    ->aud('audience2') // Add another audience
    ->sub('subject') // The "sub" claim
    ->claim('https://example.com/isRoot', true)
    ->header('typ', 'JWT')
    ->sign($privateKey) // Compute the token with the given JWK
;

try {
    $jwt = Load::jws($jws) // We want to load and verify the token in the variable $token
    ->algs(['RS256', 'RS512']) // The algorithms allowed to be used
    ->exp() // We check the "exp" claim
    ->iat(1000) // We check the "iat" claim. Leeway is 1000ms (1s)
    ->nbf() // We check the "nbf" claim
    ->aud('audience1') // Allowed audience
    ->iss('issuer') // Allowed issuer
    ->sub('subject') // Allowed subject
    ->jti('0123456789') // Token ID
    ->key($publicKey) // Key used to verify the signature
    ->run(); // Go!

    var_export($jwt);
} catch (Throwable $exception) {
    var_export($exception);
}

$jwks = new JWKSet([
    $publicKey,
    $publicKey2
]);

echo json_encode($jwks);

composer.json

{
    "name": "jonathan/jwt",
    "authors": [
        {
            "name": "Jonathan Vuillemin",
            "email": "ekkinox@gmail.com"
        }
    ],
    "require": {
        "web-token/jwt-easy": "^2.2",
        "web-token/jwt-signature-algorithm-rsa": "^2.2",
        "web-token/jwt-key-mgmt": "^2.2"
    }
}

to build keys:

$ mkdir -p config/secrets/dev

$ openssl genrsa -out config/secrets/dev/private.key 2048
$ openssl rsa -in config/secrets/dev/private.key -outform PEM -pubout -out config/secrets/dev/public.key

$ openssl genrsa -out config/secrets/dev/private2.key 2048
$ openssl rsa -in config/secrets/dev/private2.key -outform PEM -pubout -out config/secrets/dev/public2.key