中文摘要：

针对IPTV流媒体应用的特点,提出适应IPTV流媒体应用特点的适用于动态的、分布的、异构的、开放的网络环境下的数字版权保护协议,对网络中动态出现的内容服务提供了完善的数字版权保护功能,并具有跨网络安全域的特点。该协议在满足数字版权保护协议基本要求的同时,引入了版权中心和服务网关,以便更好地保证协议抗攻击的能力和内容提供者和消费者在版权方面的公平性。利用PETRI网的分析方法,对协议中各种变迁及状态变迁进行了分析。分析结果表明协议结果具有教强的安全性。

英文摘要：

On the basis of analysis of various streammingmedia digital copyright management security protocols, this paper presents a digital copyright protection protocol which is adaptive to dynamic, distributed and heterogeneous IPTV network environments and can span the diverse security domain. This protocol does not only meet the base aquirements of digital copyright protection, but also has the ability to defend against the IPTV protocol attacks and to assure fairness between digital content web service providers and customers by introducing a gateway web service and copyright center.Forthemore, a Petri Nets Tool is applied to analyze the security of protocol, and the analysis results indicate that the protocol is secure.