Cryptology ePrint Archive: Report 2004/192

Security Pitfalls of an efficient remote user authentication scheme using smart cards

Manoj Kumar

Abstract: In 2004, W. C. Ku and S. M. Chen proposed an efficient remote user authentication scheme using smart cards to solve the security problems of Chien et al.ís scheme. Recently, Hsu and Yoon et al. pointed out the security weakness of the Ku and Chenís scheme Furthermore, Yoon et al.ís scheme also proposed a new efficient remote user authentication scheme using smart cards. This paper analyzes the security pitfalls of Yoon et alís scheme and aims to show that the Yoon et al.ís scheme is still vulnerable to the password guessing attack and the insider attack.

Category / Keywords: Cryptography, Authentication, Smart cards, Password, Check digit.

Publication Info: Not Published

Date: received 7 Aug 2004, withdrawn 26 Sep 2004

Contact author: chayayamu at yahoo co in

Available format(s): (-- withdrawn --)

Version: 20040926:173219 (All versions of this report)

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