<?php require_once '../common.php'; $name = $_POST['username']; $uf = new UserFinder($pdo); $user = $uf->find($name); if (!$user) { throw new Exception('User not found'); } $request = json_decode($_POST['request_str']); $signature = json_decode($_POST['signature_str']); $user->authenticateSignature($u2f, $request, $signature); echo json_encode('Authentication successful!');