@Trust: A trust model based on feedback-arbitration in structured P2P network

Aiming at shortcomings in feedback information aggregation and trust decision in existing trust models, a novel trust model, named @Trust, is proposed for structured P2P networks. @Trust calculates the node's credibility of service, feedback and arbitration based on the evaluations of the specific service which were arbitrated according to the rule of majority in human society, to enhance the model against the malicious peers. @Trust also involves the applying of the credibility of specific services and the punishment mechanism to improve the trust decision and to resist the repeated attacks of the malicious peers. The simulation results show that @Trust has advantages in distinguishing out the false feedback and resisting the malicious peers, and thus improves the availability of P2P networks. (C) 2012 Elsevier B.V. All rights reserved.