A Multi-server Authenticated Key Agreement Protocol with Privacy preserving Based on Chaotic Maps in Random Oracle Model

In the research literature, a typical authenticated key agreement protocol is designed to realize mutual authentication and key secrecy. In a network, as a crucial cryptographic primitive, key agreement can establish secure communication channels for communication entities. Meanwhile, the users privacy is particularity important, especially for multi-server authentication environment. Network privacy security means that the personal data and online data are not peep, intrusion, interference, illegal collection and utilization. In our paper, we propose a robust chaotic maps-based authentication key agreement scheme with privacy protection using smart cards for multi-server authentication environment. The key idea of our proposed scheme is to adopt chaotic maps for mutual authentication, not to encrypt/decrypt messages transferred between user and server, which can make our proposed scheme much more efficient. In addition, our protocol can realize the users privacy preserving and various common security features. As a whole, compared with other related protocol, our proposed protocol is more secure and practical.