Cryptology ePrint Archive: Report 2012/418

Weaknesses of an Improvement Authentication Scheme using

Rafael Martínez-Peláez and Francisco Rico-Novella

Abstract: Recently, Sood-Sarje-Singh proposed an improvement to Liou et al.’s dynamic ID-based remote user authentication scheme using smart cards to prevent impersonation attack, malicious user attack, off-line password guessing attack, and man-in-the-middle attack. However, we demonstrate that Sood et al.’s scheme is still vulnerable to malicious user attack, impersonation attack and steal information from a database attack.

Category / Keywords: cryptographic protocols / Cryptanalysis; ID-based; Mutual Authentication; Network Security; Smart Cards

Date: received 25 Jul 2012

Contact author: rpelaez at unsis edu mx

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Version: 20120801:040857 (All versions of this report)

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