Cryptology ePrint Archive: Report 2004/079

Pairing-Based One-Round Tripartite Key Agreement Protocols

Zhaohui Cheng and Luminita Vasiu and Richard Comley

Abstract: Since Joux published the first pairing-based one-round tripartite key agreement protocol [13], many authenticated protocols have been proposed. However most of them were soon broken or demonstrated not to achieve some desirable security attributes. In this paper we present a protocol variant based on Shim's work [20]. As the formalized model of this type of AK protocols is not mature, the security properties of the protocol are heuristically investigated by attempting a list of attacks. The attack list presented in the paper has both the importance in theory and the meaning in practice and can be used to evaluate other tripartite and group key agreement protocols.

Category / Keywords: cryptographic protocols / tripartite protocol, pairing

Date: received 13 Mar 2004, last revised 31 Oct 2004

Contact author: m z cheng at mdx ac uk

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Version: 20041031:151955 (All versions of this report)

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