【摘要】 P2P直播系统在当今互联网上的应用越来越广泛,相对于P2P文件共享系统,其对数据传输的实时性要求更高,因此对该类系统实时性的破坏,即延迟攻击,产生的危害极大。通过分析相关理论模型,该文指出P2P直播系统在实时性方面存在安全脆弱性,基于Eclipse攻击提出了No-Offer、Delay-Chunk和No-Chunk延迟攻击方法,并提出了基于信誉机制的路由表清洗防御策略。在PlanetLab平台上基于PeerStreamer实施了真实的互联网实验,证明了Eclipse延迟攻击对当前系统的危害和该文防御策略的有效性。更多还原

【Abstract】 P2Plive video systems are widely used in today’s Internet.Compared with eMule/BitTorrent and other traditional P2 P file-sharing systems, a P2 P live video system has higher requirements on real-time data, which becomes vulnerable weakness.Delay attack,with strong concealment,is potentially lethal for large P2 Pvideo broadcasting systems.Theoretical security threats of popular P2 Plive video systems were analyzed to propose three types of delay attack based on Eclipse attack,No-Offer attack,Delay-Chunk attack,and No-Chunk attack,with a high-availability defense strategy against delay attack being developed.Experiments were made on PlanetLab based on PeerStreamer,which proves the impact of delay attack and the effectiveness of the developed defense strategy.更多还原