一种新的超级节点对等网的声誉管理协议

针对现有对等网中声誉管理的不足,基于预投票的声誉管理协议,提出了一个适用于超级节点对等网SP2PRep,在SP2PRep中,叶子节点预先向超级节点汇报声誉投票,声誉查询仅在超级节点层进行.给出了SP2PRep协议描述、实现的消息格式和体系结构.分析和仿真表明:SP2PRep既满足了声誉投票的安全性需求,又能够减少网络带宽消耗、提高声誉查询效率和快速识别恶意节点.SP2PRep协议能够很好地改善超级节点P2P系统的安全状况,促进它们的应用.

A new protocol for reputation management in super P2P networks

Disadvantages of current protocols for reputation management in peer-to-peer networks were studied.On the basis of pre-voting,SP2PRep(supernode peer-to-peer reputation) protocol was presented in its application for super-peer networks.In SP2PRep,the votes on the reputation were reported to their supermodes by the leaf modes in advance and inquiring about the reputation was carried out in the level of supermodes only.The protocol,its message formats and architecture for the implementation were described.Simulation results showed that SP2PRep protocol not only meets the requirement of security of reputation votes but also improves the performance of reputation management significantly.For example,in SP2PRep protocol the network cost was small,the efficiency of reputation searches was great and the speed of identifying malicious nodes was fast.Hereafter SP2PRep could improve the security status of superpeer systems and accelerate the application of them.