Abstract
The wireless body area network (WBAN) is considered as one of the emerging wireless techniques in the healthcare system. Typical WBAN sensors, especially implantable sensors, have limited power capability, which restricts their wide applications in the medical environment. In addition, it is necessary for the healthcare center (HC) to broadcast significant notifications to different patient groups. Considering the above issues, in this paper, the novel practical WBAN system model with group message broadcasting is built. Subsequently, a secure and efficient group key management protocol with cooperative sensor association is proposed. In the proposed protocol, the Chinese remainder theorem (CRT) is employed for group key management between HC and the personal controller (PC), which also supports batch key updating. The proposed sensor association scheme is motivated by coded cooperative data exchange (CCDE). The formal security proofs are presented, indicating that the proposed protocol can achieve the desired security properties. Moreover, performance analysis demonstrates that the proposed protocol is efficient compared with state-of-the-art group key management protocols.
Highlights
Development of wireless communication and sensor technologies has enabled remarkable improvement in both academic research and practical applications of wireless body area networks (WBAN), which offer ubiquitous wireless communication services to users [1]
Performance analysis demonstrates that the proposed protocol is efficient compared with state-of-the-art group key management protocols
We propose an efficient cooperative sensor association and group key management protocol with the Chinese remainder theorem (CRT) in wireless body area networks
Summary
Development of wireless communication and sensor technologies has enabled remarkable improvement in both academic research and practical applications of wireless body area networks (WBAN), which offer ubiquitous wireless communication services to users [1]. A typical WBAN designed for the healthcare system mainly consists of the healthcare center (HC), personal controller (PC) and many low-power wireless medical sensors implanted inside or attached to the patient’s body [1]. We propose an efficient cooperative sensor association and group key management protocol with the Chinese remainder theorem (CRT) in wireless body area networks. A novel WBAN model with message broadcasting: In practical medical WBAN scenarios, patients who receive services from HC are allocated to different departments according to their physical conditions and diseases. Group key management between HC and PC with CRT: The Chinese remainder theorem is employed for the group key management between HC and PC, which supports batch key updating In this case, HC is capable of broadcasting messages to different patient groups.
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