不同版本的laravel怎么共享session啊

现在发现高版本把cookie加密了，他引用了CookieValuePrefix，我用低版本直接引用不存在。
有谁知道这个文件在哪吗。
这是低版本，没有加密

    protected function encrypt(Response $response)
    {
        foreach ($response->headers->getCookies() as $cookie) {
            if ($this->isDisabled($cookie->getName())) {
                continue;
            }

            $response->headers->setCookie($this->duplicate(
                $cookie, $this->encrypter->encrypt($cookie->getValue(), static::serialized($cookie->getName()))
            ));
        }

        return $response;
    }

高版本

     */
    protected function encrypt(Response $response)
    {
        foreach ($response->headers->getCookies() as $cookie) {
            if ($this->isDisabled($cookie->getName())) {
                continue;
            }

            $response->headers->setCookie($this->duplicate(
                $cookie,
                $this->encrypter->encrypt(
                    CookieValuePrefix::create($cookie->getName(), $this->encrypter->getKey()).$cookie->getValue(),
                    static::serialized($cookie->getName())
                )
            ));

        }
print_r(  CookieValuePrefix::create($cookie->getName(), $this->encrypter->getKey()));die;
        return $response;
    }

如果想把低版本也进行加密，应该怎么改