Research On Security Trust Model For P2P Networks Under JXTA Platform

Peer-to-Peer network is a focus of researches and attentions in the fields of computer in recent years, and it has been applied in many fields. However, due to the its characteristics of decentralization, autonomy, dynamics, self-organization, heterogeneity, which have brought about great challenges to security issue. Currently, P2P Networks lackness of effective mechanism which can guarantee the security. How to establish trust relationship among peers and then to manage the P2P networks effectually is an important problem.JXTA, as a gather of protocol independence of programming language, system platform and network platform, is an exploiture platform of application of P2P. In this thesis, combined with trust relationships and communication security among peers in JXTA platform, we have made related researchs as follow:(1) Analyze and research the current situation of secure trusty models and point out the main problem on current researches;(2) Analyze and research the core protocol sets and security mechanism of JXTA;(3) Put forward a security trust model direct trust and credible recommendation.This model adopts the secure solution which is assembled with distributed storage trust information, trust calculation and data security. The transaction trust and recommend trust of peers is definited unambiguous, presenting method which can be calculation reliability of recommend peers.(4)Implement the security trust model under JXTA platform and after the model is applied and tested in the Service Content Management, experimental result indicated that our model can separate venomous peers effectively.In this thesis, we establish a trust model through integrating the trust mechanism and data security, which can be used as a solution security trust communications between peers. We makes useful attempts to apply trust model on security communication system.