Research Of The Trust Management Model For P2P Based On The Membership Degree

P2P network technology development has experienced from the changes of the centralized P2P network to distributed P2P network technology. In centralized P2P technology, there is a central server that is super node, the node network will be divided into one small area, a super node is responsible for one of the small area. There is no central server in the distributed P2P network nodes, the status of all nodes are equal, both the server and the client again, at the same time also ACTS as the router’s role. They are both resource providers, and network resources of person.At present, the P2P application security problems exist, such as the spread of the malicious files, file provider midway stop uploading files, etc. Aiming at distributed P2P model, this paper provides a trust model based on the membership degree, the problem of P2P network security in order to give a solution.The main content of this paper is as follows:(1) Introduces the related knowledge of trust model of P2P network and, and the trust of several typical models are analyzed.(2) Proposed a trust management model based on the membership degree, the model is divided into four parts:the local trust value, the optimization recommendation trust value and membership degree of modification, optimization recommendation trust value.(3) Simulation experiment and result analysis are given, and the experimental results show that under the given conditions the model of network security defense effect.