A Trust Model Based on Capability and Quality for P2P Networks

Abstract

In existing P2P network trust models, the evaluation offered by applicant is always relatively simple, so there is lack of prior information in computing the trust value, which would weaken the rationality and objectivity of P2P model. To solve this problem, this paper proposes a novel trust model which is based on nodepsilas capability and quality. Through the definition of capability and quality, we propose multi-dimensional evaluation vectors with which we induce the method of computing the trust value. Simulation and analysis show that our novel model can provide effective trust services and is eligible to resist and distinguish the malicious nodes which are characterized by attack, conspiracy and strategy.