Enhanced McCullagh-Barreto identity-based key exchange protocols with master key forward security

Authors

Hua Guo, Beihang UniversityFollow
Yi Mu, University of WollongongFollow
Xiyong Zhang, Zhengzhou Information Science and Technology Institute, China
Zhoujun Li, Beihang University

RIS ID

33740

Publication Details

Guo, H., Mu, Y., Zhang, X. Y. & Li, Z. J. (2010). Enhanced McCullagh-Barreto identity-based key exchange protocols with master key forward security. International Journal of Security and Networks, 5 (2/3), 173-187.

Abstract

Master key forward security is an important property for identity-based key exchange protocols. Unfortunately, most of existing identity-based key exchange protocols do not satisfy this property. In this paper, we firstly analyse Xie's modified protocol to show that signature is undesirable for an identity-based key agreement protocol with the master key forward secrecy. Then we present two improved protocols from McCullagh-Barreto identity-based key agreement protocol to capture the master key forward security. Our first protocol is efficient and its security can be proved with the help of a decisional oracle, while the second one achieves stronger security and its security can be reduced to a computational problem in the random oracle model. The master key forward secrecy is proved under the computational Diffie-Hellman assumption.