Study On Information Service Under The P2P Network Model

At present, P2P network is a very popular network structure. In P2P network, the status of each node is equal, which is different from the traditional C/S model. Each node is both a client and a server, and all data interchange can be finished among the nodes.This paper first does the comparative study on information service mode, analyses the mode, which is usually used in P2P, and establishes P2SP model. According to the features of information service mode, combined with information propagation patterns of P2P network. This paper establishes the basic mode of "Controllable Pyramid Sales Networks of Information Services". And then this paper does protocol analysis, according to the structure features of P2SP, adopts the multi-domain trust network mode to establish authentication mechanism of P2P, and establishes information authentication of P2P on MD5. For many information service providers, whose scope is small and whose security requirement is not strong, the cost that the functions of authentication mechanism of P2P, privilege management,information authentication are realized and managed is high. So this paper at last establishes a distributed trust mechanism, which can be operated and easily realized, and a trust model of P2P network ,which is based on the theory of D-S, to improve service quality of small service providers.