Two robust remote user authentication protocols using smart cards
Journal of Systems and Software
Review: Dynamic ID-based remote user password authentication schemes using smart cards: A review
Journal of Network and Computer Applications
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Recently, Das et al. proposed a dynamic ID-based remote user authentication scheme using smart cards. Liao et al. pointed out some weaknesses of Das et al.’s scheme, and presented an improved scheme. However, an impersonate attack on Liao et al.’s scheme is proposed, it proves that their scheme is also insecure. To overcome the weakness, the new scheme is presented. The advantage of the proposed scheme is that there are no secret numbers in the smart card, and can withstand all sorts of attacks.