Design And Implement Of Peer Group Authentication Protocol In JXTA

Peer-to-Peer network is a network model rising in recent years, and is now the focus of researches and attentions. Security is a critical and central concern for all network models. How to provide the secure environment is discussed extensively. Peer-to-Peer system and applications are full distributed systems without any centralized control or hierarchical organization.JXTA(the abbreviation of Juxtapose) is an open P2P project of Sun beginning at Apr. 2001. The target is providing whole general base protocols of P2P, which try to aggregate all kinds of P2P using model and standardize the P2P Services. It's just a suite of protocol without any relationship with OS and language. Today there're more than 70 open projects and the edition is 2.0.This paper analyzes the Peer Group Authentication Protocol in JXTA and finds that there is a Peer Membership Protocol that used to validate Peer which is joining Peer Group in JXTA, but it doesn't support to modify the demand of authentication and other peers don't participate in the application. So we extend the original protocol and propose a novel Peer Group Authentication Protocol which is based on voting and securer and more flexible. The voting result of the Peers in the group decides whether the applicant could participate the group or not. The qulification of the group, voting Peers and value of the group are determined by the result of the discussion of the Peers in the group. This paper implements the extended protocol in JXTA platform after authentication the validity and feasibility of the protocol and the validity and feasibility of Peer Group Authentication Protocol is validated in an experiment.