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📁 ..
📁 Helpers
📁 ImsStorage
📁 Interfaces
📄 JwksEndpoint.php(1.52 KB)
📄 LtiAbstractService.php(1.36 KB)
📄 LtiAssignmentsGradesService.php(6.65 KB)
📄 LtiConstants.php(7.56 KB)
📄 LtiCourseGroupsService.php(1.99 KB)
📄 LtiDeepLink.php(2.11 KB)
📄 LtiDeepLinkResource.php(3.28 KB)
📄 LtiDeepLinkResourceIcon.php(1.27 KB)
📄 LtiDeployment.php(392 B)
📄 LtiException.php(92 B)
📄 LtiGrade.php(3.77 KB)
📄 LtiGradeSubmissionReview.php(1.8 KB)
📄 LtiLineitem.php(3.07 KB)
📄 LtiMessageLaunch.php(17.73 KB)
📄 LtiNamesRolesProvisioningService.php(708 B)
📄 LtiOidcLogin.php(4.69 KB)
📄 LtiRegistration.php(2.69 KB)
📄 LtiServiceConnector.php(6.69 KB)
📁 MessageValidators
📄 OidcException.php(93 B)
📄 Redirect.php(2.46 KB)
📄 ServiceRequest.php(4.14 KB)

Editing: JwksEndpoint.php

<?php

namespace Packback\Lti1p3;

use Firebase\JWT\JWT;
use Packback\Lti1p3\Interfaces\IDatabase;
use Packback\Lti1p3\Interfaces\ILtiRegistration;

class JwksEndpoint
{
    private $keys;

public function __construct(array $keys)
    {
        $this->keys = $keys;
    }

public static function new(array $keys)
    {
        return new JwksEndpoint($keys);
    }

public static function fromIssuer(IDatabase $database, $issuer)
    {
        $registration = $database->findRegistrationByIssuer($issuer);

return new JwksEndpoint([$registration->getKid() => $registration->getToolPrivateKey()]);
    }

public static function fromRegistration(ILtiRegistration $registration)
    {
        return new JwksEndpoint([$registration->getKid() => $registration->getToolPrivateKey()]);
    }

public function getPublicJwks()
    {
        $jwks = [];
        foreach ($this->keys as $kid => $private_key) {
            $key_res = openssl_pkey_get_private($private_key);
            $key_details = openssl_pkey_get_details($key_res);
            $components = [
                'kty' => 'RSA',
                'alg' => 'RS256',
                'use' => 'sig',
                'e' => JWT::urlsafeB64Encode($key_details['rsa']['e']),
                'n' => JWT::urlsafeB64Encode($key_details['rsa']['n']),
                'kid' => $kid,
            ];
            $jwks[] = $components;
        }

return ['keys' => $jwks];
    }

public function outputJwks()
    {
        echo json_encode($this->getPublicJwks());
    }
}

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Editing: JwksEndpoint.php

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