The Research And Implementation Of The Dynamic Identity Authentication

With the global informationization and Internet popularization,network security gradually becomes the focus of people. The identity authentication service on which all the other security services depend is the first line of defense.This text analyz the defects of static authentication mechanism and presenting the rating and implementation of dynamic authentication mechanism; analyzing the drawbacks in application and potential outside attacks of authentication mechanism based on time synchronicity, and providing the IDCA with current the technology of DCA; With utilizing the uncertain factors in improved MD5 arithmetic, producing an encryption arithmetic whose passwords have nuance in every time.In the text,some new ideas and ways on the realization of identity authentication mechanism are raised, and main innovations are as follow:1,The algorithm MD5 which is used in the old system has been improved.2,It analyses the potential security risks of time synchronization dynamic encryption mechanism, draws on the DCA, raises the IDCA, and enhances the security intensity of the dynamic identity authentication.3,Bring forward the ICM which alters the original metric coding mechanism to scrambling Base64 coding mechanism, it reduces the successful attack probabilities effectively.Only on the basis of cryptography, a highly-secure identity authentication system can be designed. This subject researches on the dynamic encryption mechanism and dynamic identity authentication mechanism, and puts forward a high safer identity authentication system.