Create a JWKSet with existing JWK with the symfony bundle

[tomme87]

Description Looks like there is no way to create a JWKSet with existing JWK defined with the Symfony bundle.

I would like to be able to create a key_set from other keys I have defined in the config.

Example

jose:
  keys:
    key1:
      file:
        path: '/path/to/key1'
    key2:
      file:
        path: '/path/to/key2'

  key_sets:
    keyset_name:
      jwks: # This is the method I want to add
        - key1
        - key2

[Spomky]

Hi @tomme87,

This behaviour does not exist, but the opposite one does: https://web-token.spomky-labs.com/the-symfony-bundle/key-and-key-set-management/key-management-jwk#from-a-key-in-a-key-set

I understand that the JWKs are generated from existing keys. As this is not really efficient (requires key conversion during runtime), I suggest to create the JWKSet from those keys. This way you avoid conversion and can have single keys as you expect.

[tomme87]

Thanks for the quick reply.

Good suggestion. I will create the JWKSet instead, and go from there.

[thejoelinux]

Hi,

I was searching for the same thing, as is want to share the public key on a `/key/set' URL; so I have my public_key in a file (for use in a combinaison of symfony/oauth2-server/openid-connect-server).

I don't see how I could declare a JWKSet with no keys, except by giving it one in json format ?

[Spomky]

Hi @thejoelinux,

What about JWK as a service? With this feature, you will be able to inject your key in a controller and return a JsonResponse

[thejoelinux]

That's what i finally did (public be the name of the key in the yaml configuration):

<?php

namespace App\Controller;

use Jose\Component\Core\JWK;
use Jose\Component\Core\JWKSet;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\JsonResponse;
use Symfony\Component\Routing\Annotation\Route;

class KeyController extends AbstractController
{
    #[Route('/openid/key/set')]
    public function decode(JWK $publicKey): JsonResponse
    {
        $keySet = new JWKSet([$publicKey]);
        return new JsonResponse($keySet->jsonSerialize());
    }
}

But it would have been practical to directly use the controller from the module.

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