Abstract
With the rapid development of the computer network, Internet provides powerful online service, thus forming multiple server environment, scholars have put forward multiserver authentication protocols, but there are some flaws in those protocols, in this paper, we analyze former multi-server authentication protocols based on dynamic identity, we study and design a novel identity authentication protocol in multiserver environment, it is based on dynamic identity, especially protects user identity untraceable, it avoids some attacks effectively. Through the simulation experiment, we compare the new protocol with the former protocols, our protocol is more secure and has more functions than former protocols.
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