Security Enhancement for Robust Password Authenticated Key Agreement Using Smart Cards

Abstract

The authentication system is an important security element in a distributed computer environment. In 2006, Juang et al. proposed a robust and efficient password authenticated key agreement scheme using smart cards. They claim their scheme is robust and efficient. However, we find that their scheme can not prevent the offline dictionary attack with the smart card perfectly. In this paper, we show this drawback and propose a new scheme to remedy the drawback.