The Research Of P2P Trust Model

With the development and applications of P2P technology,and comparing with thetraditional C/S model,the characteristics of distributed and counter centralization make ithave many advantages. But at the same time,its anonymity and dynamic make it have a fewhidden security dangers.This paper propose an objective evaluation of the introduction of trust status for thesub-domain trust model for the security risks that exist in the P2P network. It gives themalicious behavior of more effective containment.In this model we divide domain based inthe interest of each node.We divide inter-domain and the domain into two differentevaluation models.We lead into trust objective and trust mechanism when update the trustevalutions of the node.The purpose is to contain the accumulation evalution attack and to urgethe service node sustained to give good service.In this paper, simulation results verify the feasibility and effectiveness of the proposedtrust status evaluation and update algorithm. In the experiment, network performance andtransaction success rate is affected by setting node transaction volume, the number ofsub-domain and the proportion of malicious nodes. Comparing with the general non-domainmodel, the paper illustrates the good containment of malicious nodes and little influence onthe network performance of the new model.