The Research Of Trust And Authorization In P2P Based On PKI

Trust and Authorization is an important developing direction of PKI technology, and there is a trend to authorization area. In this paper, PKI technology and Peer-to-Peer network are introduced briefly; some PKI certificate and its application environment are analyzed. At the same time, the characteristic and service model of Peer-to-Peer network,the requirement to trust management and the shortcoming of PKI in trust management are discussed.In this paper, a trust and authorization model is designed to achieve trust and authorization. This model combines the advantages of SPKI and the advantages of PGP. This model is composed of error control unit, authorization unit, trust management and central control unit, and so on. In this paper, I have used certificate, It has several advantages such as efficiency, low computational and communication complexity.