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An Improvement of a Deniable Authentication Protocol

Bin-Tsan HSIEH, Hung-Min SUN

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Summary :

A deniable authentication protocol is used to identify the source of a received message for a receiver, but the receiver is unable to prove to a third party the source of the received message. Recently, Fan et al. proposed a deniable authentication protocol based on Diffie-Hellman algorithm. In this paper, we show that Fan et al.'s protocol does not possess the deniable property as they claimed. A cheating receiver can prove the source of the received message to a third party. In addition, we also present a modification of Fan et al.'s protocol to overcome the security flaw.

Publication
IEICE TRANSACTIONS on Communications Vol.E87-B No.10 pp.3099-3101
Publication Date
2004/10/01
Publicized
Online ISSN
DOI
Type of Manuscript
LETTER
Category
Network

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