(function() {
  navigator.id.beginProvisioning(function(eml, dur) {
    navigator.id.genKeyPair(function(pub) {
      var xhr = new XMLHttpRequest();
      xhr.open('POST', #{toJSON $ support ^. provisioning});
      xhr.onreadystatechange = function () {
        var DONE = this.DONE || 4;
        if (this.readyState === DONE) {
          navigator.id.registerCertificate(this.responseText);
        }
      };
      xhr.send(JSON.stringify({eml: eml, pub: JSON.parse(pub), dur: dur}));
    });
  });
})();