【摘要】 针对P2P网络中的Sybil攻击,基于小世界模型提出一种防御机制。将Sybil攻击团体的发现归结为最大流/最小割问题,引入虚拟节点并利用爬行器找到Sybil攻击团体。实验结果证明,该机制能将Sybil攻击者和P2P系统分开,减少系统中Sybil攻击节点所占比例。更多还原

【Abstract】 Aiming at the Sybil attack in P2P network,this paper proposes a defense mechanism based on the small world model.The discovery of Sybil group boils down to max-flow/min-cut problem,introduces virtual node and uses a crawler to find Sybil group.Experimental results show that this mechanism can isolate the Sybil attacker nodes from P2P system,and reduce Sybil nodes’ percentage in the system.更多还原