Certificateless authenticated key agreement based on the MTI/CO protocol

Authenticated key agreement is a central piece for building secure communications, and perhaps the most commonly used cryptographic protocol. In this paper, an efficient two-party certificateless authenticated key agreement protocol is proposed, which is based on one of the MTI key agreement protocols: the MTI/CO protocol. Our protocol also uses bilinear pairings on certain elliptic curves. After a comparison with the former counterpart, we show that the newly proposed key agreement protocol is of great efficiency and more practical. Furthermore, the security properties of the new protocol are studied using heuristic approaches.