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Journal of Information Science and Engineering, Vol. 27 No. 3, pp. 915-932

A Secure ID-Based Authenticated Group Key Exchange Protocol Resistant to Insider Attacks

TSU-YANG WU, YUH-MIN TSENG AND CHING-WEN YU
Department of Mathematics
National Changhua University of Education
Chang-Hua City, 500 Taiwan

Recently, several identity (ID)-based authenticated group key exchange (IDAGKE) protocols from bilinear pairings were proposed. However, they all suffered from different types of insider (participants) colluding attacks. In this paper, we present a new IDAGKE protocol from bilinear pairings. In the random oracle model and under some security assumptions, we demonstrate that the proposed protocol is a provably secure IDAGKE protocol providing forward secrecy. Meanwhile, it is secure against insider attacks.

Keywords: authenticated group key exchange, identity-based, bilinear pairings, insider attacks, malicious participant

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