A User Authentication Protocol Using Chaotic Maps

A chaotic map has sensitivity to a change in initial condi-tions and parameters, and a long-term forecast becomes impossible by the iterations of a chaotic map. These features look similar to the properties of the cryptology. For that reason, it is effective to use chaotic maps for cryptosystems. In this research, we propose an authentication pro-tocol by three times of the authentication interaction. This authentication protocol based on the iteration of the coupled logistic maps in a public-key cryptography. We investigate the vulnerability of this user authentica-tion protocol. 1