摘要
介绍了条件接收(CA)的基本原理,包括条件接收的系统结构、机顶盒的CA功能等,提炼了CA的4个基本要素,并分析了CA的安全漏洞与常见破解方法。针对这些安全漏洞,各CA厂家提出了多种解决方法,重点讲述了这些方法的原理及其优缺点。
The basic principle of conditional access （CA） is introduced, including the system structure of CA and the CA function of set-top box, and four main components of CA are extracted, and the security issues and common cracking methods of CA are analyzed. Based on these security issues and cracking methods, many protecting methods are proposed, which are introduced and compared in this paper.
出处
《电视技术》
北大核心
2013年第2期25-27,39,共4页
Video Engineering
