Cryptology ePrint Archive: Report 2013/848

Weakness of Several Identity-based Tripartite Authenticated Key Agreement Protocols

Xi-Jun Lin and Lin Sun

Abstract: Key agreement allows multi-parties exchanging public information to create a common secret key that is known only to those entities over an insecure network. In recent years, several identity-based authenticated key agreement protocols have been proposed. In this study, we analyze three identity-based tripartite authenticated key agreement protocols. After the analysis, we found that these protocols do not possess the desirable security attributes.

Category / Keywords: cryptographic protocols / Information security; Authentication; Key agreement; Tripartite; Identitybased

Date: received 15 Dec 2013

Contact author: linxj77 at 163 com

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Version: 20131217:152537 (All versions of this report)

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