Date Added: Jul 2009
The authentication and authorization based on CA is not suitable for P2P network because of its centralized control. DHT is efficient to search a required certificate in P2P network, but it is not fit for constructing the certificate chains including many certificates. This paper proposes an algorithm of constructing the certificate chain based on the friendship group of points in P2P network. Compared with DHT, It is more efficient because it adopts the structural overlay network in the small world to construct the authorization and authentication certificate chain.