Cryptology ePrint Archive: Report 2007/163

Secure Deniable Authenticated Key Establishment for Internet Protocols

Meng-Hui Lim and Sanggon Lee and Youngho Park and Sangjae Moon

Abstract: In 2003, Boyd et al. have proposed two deniable authenticated key establishment protocols for Internet Key Exchange (IKE). However, both schemes have been broken by Chou et al. in 2005 due to their susceptibility to key-compromise impersonation (KCI) attack. In this paper, we put forward the improved variants of both Boyd et al.'s schemes in order to defeat the KCI attack. On top of justifying our improvements, we further present a detailed security analysis to ensure that the desired security attributes: deniability and authenticity remain preserved.

Category / Keywords: Deniable, Internet, Key Exchange, Authentication

Publication Info: ISA2008

Date: received 3 May 2007, last revised 25 Jan 2008

Contact author: meng17121983 at yahoo com

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Version: 20080125:092646 (All versions of this report)

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