Based on the stateless broadcast encryption scheme with Complete-Subtree method using the X509 certificate, this paper discusses the design of a secure Multimedia system and implements a scalable, flexible and more robust DRM system for Multimedia.

• 本文首先利用基于X509证书的广播加密的完全子树(CS)方案设计并实现了一个灵活、安全的视频数字版权管理系统。