Game Model for Trust Establishment Based on Internet Virtual Environments

Recent research pays more attention on trust establishment in one securing region,there are some shortages to establish trust for the strangers in the virtual computing environment.Therefore this paper proposes a game model for trust establishment based on the game theory.It finds the coarse set of exchange credential which is generated according to local access control policies,and uses Nash Equilibrium(NE)to refine the set of exchange credential,so as to make the client and server gain the most trust but loss the least privacy.And exchanges the refined set of exchange credential at one time to save the communication time which is brought by exchange credentials time without number according to the access control policies.The game model for trust establishing not only resolves the problem of establish trust between strangers,but also improves the efficiency of trust establishment.