Cryptology ePrint Archive: Report 2007/383
Cryptanalysis on Improved Chou et al.'s ID-Based Deniable Authentication Protocol
Meng-Hui Lim and Sanggon Lee and Hoonjae Lee
Abstract: A deniable authentication protocol enables the protocol participants to authenticate their respective peers, while able to deny their participation after the protocol execution. This protocol can be extremely useful in some practical applications such as online negotiation, online shopping and electronic voting. Recently, we have improved a deniable authentication scheme proposed by Chou et al. due to its vulnerability to the key compromise impersonation attack in our previous report. However, we have later discovered that our previous enhanced protocol is vulnerable to the insider key compromise impersonation attack and key replicating attack. In this paper, we will again secure this protocol against these attacks and demonstrate its heuristic security analysis.
Category / Keywords: cryptographic protocols / Identity-Based, Deniable, Key Agreement Protocol, Cryptanalysis
Date: received 27 Sep 2007
Contact author: meng17121983 at yahoo com
Available format(s): PDF | BibTeX Citation
Version: 20071004:124633 (All versions of this report)
Short URL: ia.cr/2007/383
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