P2P网络中蚁群的声誉信息分发算法研究

Research of Reputation-Ant Distribution Algorithm in P2P Networks

声誉是一种新型的信任建立机制。在P2P网络中,由于P2P网络的匿名性和开放性,存在节点可信问题。利用基于声誉的信任机制,可以隔离和孤立恶意的peers,选择信任状况好的peers提供服务。文中提出了一种基于蚁群的声誉信息分发机制,该算法通过模拟蚁群寻找食物的行为,实现声誉信息在无集中控制的P2P环境下的分发,基于蚁群的声誉信息分发算法能根据节点选择最佳路径来获取声誉信息,这样既降低系统负载,又提高搜索的效率,实现了节点安全、高效获取声誉信息的问题。

Reputation is a new method building trust. In peer to peer networks, because of the anonymous and open characteristics, the nodes who trust issue is existed. Reputation-based trust mechanism can isolate malicious peers from the systems and choose trusted peers＇ services. Propose an ant-based reputation evidence distribution algorithm. This algorithm achieves reputation distribution in P2P network by stimulating the ants＇ behavior of looking for food. Depending on nodes ,it can choose the optimal path and obtain the reputation, which lowers the system load , improves the efficiency of research, and solves the difficulty about how to obtain reputation safely and efficiently.