/** * @param Service_OAuth_RequestBuilder $builder */ public function build_signature(Service_OAuth_RequestBuilder $builder) { $key_parts = array($builder->consumer['secret'], isset($builder->token) ? $builder->token['oauth_token_secret'] : ""); $key_parts = Service_OAuth::urlencode_rfc3986($key_parts); $key = implode('&', $key_parts); return $key; }