如何从图像加密获取图像文件名

Question

我的程序应该加密图像。

  

我的问题是：如何显示加密的图像

我的控制器代码

public function view($slug = NULL){
            $data['post'] = $this->post_model->get_posts($slug);
            $post_id = $data['post']['id'];
            $user_id = $data['post']['user_id'];
            $data['comments'] = $this->comment_model->get_comments($post_id);
            $data['users'] = $this->user_model->get_user($user_id);

            if(empty($data['post'])){
                show_404();
            }

            $data['title'] = $data['post']['title'];

            $this->load->view('templates/header');
            $this->load->view('posts/view', $data);
            $this->load->view('templates/footer');
}