一种基于社交网络的Sybil攻击防御

摘要

通过对以DHT技术为主的结构化对等网络进行安全方面的综述分析,Sybil攻击所带来的威胁逐渐增大.当前针对Sybil攻击的防御策略有建立可信中心认证、分布武认证等多种方法,但是这些方法要么破坏了网络的非集中性,要么给正常的结点在加入时带来障碍.通过研究发现,利用社交网络技术在解决这一问题时有着良好的前景.为此,利用社交网络技术,提出一种新的Sybil攻击防御模型SSDM,并通过仿真实验证明,SSDM具有良好的防御效果.%By summarised analysis on security of structured peer-to-peer network mainly based on DHT technology,it is known that the menace brought by Sybil attacks is increasing gradually.At present there are a couple of methods used as the defense strategies aiming at the Sybil attacks including setting up the credible certification centre and distributed authentication and so on,but these methods either destroy the non-centralisation of network or bring the barrier to those normal nodes joining in.Through the study,we find that using social networking technology to solve this problem has good prospect.Therefore,by using the social network technology,we propose a new Sybil attack defense model SSDM,and demonstrate by the simulation results that SSDM has good defense effect.