<?php require_once '../common.php'; $name = $_POST['username']; $uf = new UserFinder($pdo); $user = $uf->findOrCreate($name); $regs = $user->getRegistrations(); $req_data = $u2f->getRegisterData($regs); list($request, $sigs) = $req_data; $out = ['request' => $request, 'signatures' => $sigs]; echo json_encode($out);