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Computers 2018, 7(1), 9; https://doi.org/10.3390/computers7010009

An Improvement on Remote User Authentication Schemes Using Smart Cards

1
Department of Computer Science and Information Engineering, Chaoyang University of Technology, Taichung 41349, Taiwan
2
School of Information Engineering, Changchun Sci-Tech University, Changchun 130600, China
3
School of Physical Therapy, Chun Shan Medical University, Taichung 40201, Taiwan
4
Department of Industrial Education, National Taiwan Normal University, Taipei 10610, Taiwan
*
Author to whom correspondence should be addressed.
Received: 4 December 2017 / Revised: 8 January 2018 / Accepted: 12 January 2018 / Published: 15 January 2018
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Abstract

In 2010, Yeh et al. proposed two robust remote user authentication schemes using smart cards; their claims were such that their schemes defended against ID-theft attacks, reply attacks, undetectable on-line password guessing attacks, off-line password guessing attacks, user impersonation attack, server counterfeit attack and man-in-the-middle attack. In this paper, we show that Yeh et al.’s schemes are still vulnerable to ID-theft attack, off-line password guessing attacks, undetectable on-line password guessing attacks and user impersonation attack. Notably, problems remain in situations where the user lost a smart card or the malicious legal user. To remedy these flaws, this paper proposes an improvement on Yeh et al.’s remote user authentication schemes using smart cards. View Full-Text
Keywords: authentication; cryptanalysis; security; smart card authentication; cryptanalysis; security; smart card
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Chen, C.-L.; Deng, Y.-Y.; Tang, Y.-W.; Chen, J.-H.; Lin, Y.-F. An Improvement on Remote User Authentication Schemes Using Smart Cards. Computers 2018, 7, 9.

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