A DynamicTrust Model Study Based On The Recommanded Values Of P2P

Now, the P2P technology has been very popular in the Network appli-cation, and the security issues also become complex and distinct. So thenew requirements for the safety of the P2P has been advanced. It can thusbe seen that in the current environment of P2P safety study which was ofmajor significance and worth. This paper designed a solution of P2P trustmodel which based on recommended values. The main research work andresults are as follows:This paper combines with the knowledge of human sociology andsummarizes a certain commonality of trust, and analyzes the attributes.After the above operation, it design an approach of quantitative expression for trust which is based on Fuzzy set theory;Summarizing andanalyzing the current means of P2P network attack.After that, this paperreference to commonly used methods of prevention, and produced aseries of corresponding security policy; By the way of fine-grainedanalysis for the transmission of trust, this paper design a calculationmethod for calculating the trust value，and get the final trust valuethrough the context of transmission of direct trust and the number ofrecommended trust in multilevel comprehensive evaluation;Programming the models for performance simulation and conductingsome small-scale anti-pressure testing，after that this paper analyzes theresults of the test.The simulation and experiment result indicates that this modelsimplify the calculation of trust value, and could improve thecomputational efficiency with other application in P2P systems, so thatthe calculation is greatly enhanced efficiency and P2P network attacks inmalicious nodes have a cooling effect and reduce the P2P transmission tothe occupation of the network resources, saving the system resources.