An improvement on a three-party authentication key exchange protocol using elliptic curve cryptography

The authentication key exchange protocol enables communication participants to authenticate each other and agree on the session key over an insecure public network. Recently, a three-party authentication key exchange protocol based on Elliptic curve cryptograph is proposed. In this paper, we improve the three-party encrypted key exchange protocol by bilinear maps. The proposed three-party authentication key exchange protocol is provable secure under Computational Diffie-Hellman assumptions in the standard model. Furthermore, the novel protocol is more efficient.