A New Anonymous Ring Authenticated Key Exchange Protocol

Due to the growing importance in the fields of computer networks, how to keep user's privacy has drawn more and more concerns in recent years. In this paper, based on a ring signature scheme, we propose a new secure anonymous authenticated key exchange protocol, which inherits all the good virtues of the previous protocols. Furthermore, we discuss the security attributes of our new scheme. Finally, we give an extension of our new scheme's application and make a conclusion of this paper. Index Terms—ring signature, anonymous authentication, key exchange I. INTRODUCTION Due to the growing importance in the application of computer networks (1), authentication supporting key exchange has been widely used to protect resources from illegal access. However, traditional authentication schemes supporting key exchange require that the identity of the user should be explicitly specified to facilitate authentication and further key exchange, which may violate the user's privacy in some privacy-sensitive applications, such as online drug stores. In order to solve such seemingly paradoxical issue, many schemes have been proposed, and in this paper we also give a sheme to solve such problem.