The Research Of Trust Model Based On Peer-to-Peer E-commerce

As the acceptance and favor of the software products adopting P2P technology as its kernel by the consumers recently, it make P2P network as a research and attentive hotspot in the computer field, but for features such as without restriction of the network nodes and existing unbidden exchange actions among the nodes, thus raise a great challenge to the P2P security issue. And for the current P2P networks are lack of effective mechanism for improving the security of the system, so how to solve the security problem result from the dynamicity and nondeterminacy of P2P Network, creation of trust relation of peer nodes of P2P and effective management of them have become an important issue, and thus the purpose of this paper.This paper first introduced the advantages and applications of the P2P network and P2P E-business, analyzed the P2P E-business's crucial security and concluded the security demands of the P2P E-business. Chapter II discussion of system structure, important concepts and core protocol of the JXTA platform. Chapter III, in order to solve issue result from dynamicity and nondeterminacy of P2P network environment developed a trust model in the distributed environment that based on reputation aim at the incompetence of dynamical adaptive ability that can change nodes action of the current trust model in the center of the paper. And based on the exchanges records and exchanges estimate information of synthesis nodes, this model propose utilization of four parameters such as local reputation, trust of evaluate, entity reputation and weight factor of trust to survey the model. Thus realize and effective the model. And meantime, the model combines trust value storage, trust calculate, distributed research, distribute, upgrade and security of the data as the solution. Result of the analogy test and analyze showed that, exchange success rate of this model is high above other kinds of trust models, and it can also effectively isolate the malice service nodes and isolate the malice evaluate nodes.This paper combined trust mechanism and data security to create a trust model, and provided a solution of security trust communication of peer nodes of P2P e-business, and also set a good example in how to apply trust model to P2P security e-business system.