A pairing-free ID-based one-pass authenticated key establishment protocol for wireless sensor networks
Due to resource constraints and unique features of wireless sensor networks (WSNs), designing a key establishment protocol is much harder for WSNs than for traditional wired and wireless counterparts. In this paper, we propose a new efficient and secure ID-based one-pass authenticated key establishment protocol between an outside user and a sensor node. The proposed protocol does not require sensor nodes to compute any expensive pairing function. Moreover, it imposes very light computational and communication overheads and also provides scalability. We analyze security and efficiency of the proposed protocol by comparing firstly the session key establishment protocols for WSNs and secondly the existing ID based one-pass key establishment protocols. The comparison shows that the proposed protocol is the most secure and efficient one for WSNs applications providing both security features of user authentication and session key establishment.