Abstract:

The authenticated key agreement protocol proposed by Chen et al. does not have the property of KeyCompromise Impersonation (KCI) resilience. This paper conducts a detailed analysis on the flaw．To avoid this shortcoming，an improvement of the protocol is proposed based on the original scheme．This scheme permits two communicating sides to authenticate each other’s identity and agree the session key fairly. This protocol has better security characteristics and efficiency.

Key words: authentication;key agreement protocol;bilinear pairing;keycompromise impersonation resilience