Solution of Identity Authentication Based on Dynamic Password and Intrusion-Tolerant

In traditional identity authentication,only static passwords were employed.Besides,only one authentication server was utilized for offering service to customers.There are two disadvantages in the above scheme: static password can be easily broken;if the authentication server was breached or broken down,it wouldn′t offer the usual service to customers in time,and even result the loss of customers′ information forever.Hence,it is necessary to find a more effective identify authentication scheme.By combining dynamic password with intrusion-tolerant technique,this paper presents a new identity authentication scheme that can effectively cope with the problems caused by both the breach of password and broken down of some authentication servers.