A secure pairing-free certificate-less authenticated key agreement protocol

Abstract

Pairing-free certificate-less two-party authenticated key agreement (CT-AKA) protocol is computation-efficient, easily manageable, and less key escrow dependent compared to traditional pairing-based identity-based protocol. In this paper, we propose four types of attacks on CT-AKA, present a pairing-free CT-AKA protocol and analyze its security in Lippold model. Compared with relevant CT-AKA protocols, our protocol is more efficient, secure and practical to apply.