Abstract: In view of the fact that the View Change algorithm in the existing Byzantine fault tolerance researches can be attacked, a new view change algorithm is proposed. This paper introduces the method of Suspect-Very before the backup replicas prepare to start the process of view change when the backup replicas don’t receive requests from the primary replica. The method ensures the fact that the view change process will be started only in the case of the primary replicable faulty, which ensures that the system will effectively resist attack. The experimental results show the effective of the algorithm.

Key words: replica, start view change, against attacks, calling services