The New P2p Network Security Model - Sap2p Design, And Realization

With the rapid development of P2P networks, P2P networking technology has become the IT technology research and application hot spots. According to the survey, the Internet traffic, there are more than 50% of traffic comes from the use of P2P software, and fully illustrates the wide range of P2P network applications. However, with the widely used P2P networks, but also brings a series of urgent need for study and solve the problems, security issues are especially important and urgent.This thesis presents a new trust model - based on trust management system for P2P network security model. The basic idea of this model is to use security policy to implement user security, self-government; security credentials with the conversion mechanisms to address the different authentication methods common between the problems; the formation of a security policy center, with a unified management of security credentials to address the question, the premise is to ensure that the system of self-management, security policy built on the basis of the manageability of the entire model; based on the JXTA platform and using Java language Design and Implementation of the model to achieve cross-platform nature.The main work and contributions in this thesis are listed as follow: first P2P network structure, characteristics and applications of the research, analysis of the P2P network applications security, P2P network application for the general safety requirements and the core security requirements of the summary, trust in the P2P network applications at the heart of security needs; and then comparing the current development platform for a variety of P2P networks, analyzed the advantages and disadvantages of a variety of platforms from a focus on architecture, the core protocol, and security technologies studied JXTA Platform , and the safety of the platform were analyzed; also trust management systems have been studied and analyzed the relationship of trust in the P2P network characteristics, summarized the trust management system as well as the Research Trust Management System in P2P networks faces many problems, with emphasis on the distributed environment suitable for the SPKI / SDSI has done a detailed analysis of the theory; finally proposed a new P2P network security model-SAP2P, and use of object-oriented technology in the JXTA platform designed the model.