protected function set_cookie() {

		$hash_str = sprintf( '%1$s|%2$s', $this->get_id(), $this->expires );
		$hash     = hash_hmac( 'md5', $hash_str, wp_hash( $hash_str ) );
		$value    = sprintf( '%1$s||%2$d||%3$d||%4$s', $this->get_id(), $this->expires, $this->expiring, $hash );

		// There's no cookie set or the existing cookie needs to be updated.
		if ( ! isset( $_COOKIE[ $this->cookie ] ) || $_COOKIE[ $this->cookie ] !== $value ) {

			return llms_setcookie( $this->cookie, $value, $this->expires, COOKIEPATH ? COOKIEPATH : '/', COOKIE_DOMAIN, $this->use_secure_cookie(), true );

		}

		return false;

	}