一种节点信誉相关的P2P网络信任管理模型

摘要

Lots of dishonesty actions and unreliable services flood the present applications based on peer-to-peer. The paper presents a trust management model TMMRN for P2P networks by simulating the process of trust formation in social relation nets. In TMMRN, the reputation of a peer,mainly conies from other nodes' weighted trust feedback,determines whether the transaction can process or not. To increase the activity of peers in network,some prompting mechanism be introduced into TMMRN. Moreover,TMMRN can reduce the burden of networks. Experiments show that TMMRN can calculate the reputation of peer rapidly and efficiently, prevent the attacks of the malicious peers effectively, and stir the freerider peers interact with system actively.%现有的P2P系统中存在大量的欺诈行为和不可靠的服务.本文通过模拟社会关系网络中信任的形成机制,提出P2P网络信任管理模型TMMRN,TMMRN通过考察节点的信誉值来进行安全交易,节点的信誉主要来自于其他节点对它的加权信任反馈,在信誉计算中增加了激励机制.TMMRN还可减少交易时的网络负担.实验表明TMMRN可提高信誉值的计算效率,能有效抵抗恶意节点的攻击,还可激励懒惰节点主动参与到系统中来.