Research: Remote login authentication scheme based on a geometric approach
Computer Communications
Research: Remote scheme for password authentication based on theory of quadratic residues
Computer Communications
A new remote user authentication scheme using smart cards
IEEE Transactions on Consumer Electronics
IEEE Transactions on Information Forensics and Security - Special issue on electronic voting
Journal of Network and Computer Applications
Secure fingerprint-based remote user authentication scheme using smartcards
WINE'05 Proceedings of the First international conference on Internet and Network Economics
Expert Systems with Applications: An International Journal
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In 2002, Lee, Ryu, and Yoo proposed a fingerprint-based remote user authentication scheme using smart cards. The scheme makes it possible for authenticating the legitimacy of each login user without any password table. In addition, the authors claimed that the scheme can withstand message replay attack and impersonation. In this paper, we shall point out a security flaw in this scheme, that is, n legitimate users can conspire to forge 2n-n-1 valid IDs and PWs for successfully passing the system authentication. Furthermore, we also show that the authentication equation is incorrect. Thus, the scheme is unworkable.