Browsing by Author "Shen, HY"

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A secure one-time password authentication scheme using smart cards
(2002-11-01)
Yeh, TC
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Shen, HY
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Hwang, JJ
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資訊管理與財務金融系註：原資管所+財金所
;
Department of Information Management and Finance
Using the great one-time password concept,, the widely utilized one-way authentication scheme S/Key provides well protection against replay attacks. In this paper, S/key is enhanced to secure transactions in a critical environment. The proposed scheme is free from any of server spoofing attacks, pre-play attacks, and off-line dictionary attacks. A session key here is also established to provide confidentiality. Moreover, simplicity and efficiency are taken into consideration from the user's point of view. A smart card is applied to simplify the user login process and only the hash function is used to keep its efficiency. Therefore, the scheme proposed hereinafter is able to build a safer shield for sensitive transactions like on-line banking or on-line trading in bonds and securities.