Abstract: For mobile communication networks, the main security troubles including the authentication of entities, establishment, delivery, and negotiation of conversation keys mostly concentrate on the wireless interface duo to its inherent openness. In this paper, we first propose a new AKE protocol on the basis of research on other alike ones, then analyze its security and other performance and finally discusses some correlative issues about the protocol. As the analysis shows that our protocol has not only higher safety, but more suppleness, better efficiency, low operation times, and better applicability, thus being suitable for mobile use.

Key words: mobile communication networks, AKE protocols, entity authentication, key establishment