public function get(OAuthConsumerInterface $consumer,
                        OAuthTokenInterface $token,
                        $httpverb,
                        $url,
                        $params = [])
    {
        uksort($params, 'strcmp');

        $base_url = $this->baseURL($httpverb, $url, $params);
        $key = $consumer->secret.'&'.$token->secret;

        return base64_encode(hash_hmac('sha1', $base_url, $key, true));
    }