One-time password authentication scheme using smart cards providing user anonymity

Authors:
Eun-Jun Yoon;Kee-Young Yoo
Affiliations:
Department of Computer Engineering, Kyungpook National University, Daegu, South Korea;Department of Computer Engineering, Kyungpook National University, Daegu, South Korea
Venue:
ICCSA'06 Proceedings of the 2006 international conference on Computational Science and Its Applications - Volume Part V
Year:
2006

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Abstract

In 2005, Lee and Chen proposed an improved one-time password authentication scheme that can prevent a stolen verifier attack and that is as efficient as the scheme of Yeh-Shen-Hwang. The current paper, however, demonstrates that Lee-Chen's scheme is still vulnerable to Denial-of-Service attacks and a simple solution is presented in order to isolate such a problem. Furthermore, we propose an efficiently optimized one-time password authentication scheme that can provide user anonymity. In addition the computational costs are lower than those of Lee-Chen's scheme.