CRYPTANALYSIS AND ENHANCEMENT OF PASSWORD AUTHENTICATION SCHEME FOR SMART CARD
CRYPTANALYSIS AND ENHANCEMENT OF PASSWORD AUTHENTICATION SCHEME FOR SMART CARD Raphael Nyirongo1 , Solomon Kuonga1 , Patrick Ali1 , Levis Eneya1 and Hyunsung Kim1,2 1Mathematical Sciences Department, University of Malawi, Chancellor College, Zomba, Malawi 2 (Corresponding Author) Department of Cyber Security, Kyungil University, Kyungbuk, Korea ABSTRACT Password authentication with smart card is one of the simplest and efficient authentication mechanisms to ensure secure communication over insecure network environments. Recently, Tsai et al. proposed an improved password authentication scheme for smart card. Their scheme is more secure than the other previous schemes. In this paper, we show Tsai et al.’s scheme is vulnerable to password guessing attack and has computational overhead. Furthermore, we propose an enhanced password authentication scheme to eliminate the security vulnerability and enhance the overhead. By presenting concrete analysis of security and perf...