TinyAKE: A More Practicable and Trustable Scheme for Authenticated Key Establishment in WSNs

TL;DR

TinyAKE is a lightweight, secure, and practical authenticated key establishment protocol for wireless sensor networks, addressing high loss rates and resource constraints, and demonstrating improved security and efficiency through theoretical proof and experimental validation.

Contribution

Proposes TinyAKE, a novel lightweight authenticated key transport protocol based on certificates, tailored for resource-constrained wireless sensor networks, with proven security and practical implementation.

Findings

TinyAKE improves secure connectivity in WSNs.

The protocol is feasible and efficient in TinyOS implementation.

Optimal repeated negotiation is one, enhancing security and performance.

Abstract

The characteristics of high loss rate, resource constraint, being eager for good security haven't been fully considered in the existing key establishment protocols of wireless sensor networks. Analyzing the key establishing problem from the MAC and physical layers, existing protocols are not practicable enough due to their overlong agreement packets and single round key establishment. To mitigate the impact of these problems, a group of design principles for secure sensor networks has been presented and TinyAKE, an authenticated key transport protocol based on lightweight certificate, is proposed in this paper. The security of TinyAKE are proved with the theory of indistinguishability, meanwhile, the correctness is also proved, the performance is analyzed and compared with the existing similar protocols. Finally TinyAKE is implemented in the TinyOS with TinyECC. Our evaluation shows that TinyAKE is a more practicable and trustable authenticated key establishment protocol than existing protocols. The experimental result shows that the key transport with certificate mechanism is feasible in WSNs. Moreover, the simulation results show that the optimal number of repeated negotiation is one when the secure connectivity rate of TinyAKE is improved by using the repeated key negotiation.