A computationally efficient authentication and key agreement scheme for multi-server switching in WBAN
Zisang Xu, Cheng Xu, Jianbo Xu, Xiangwei Meng
Abstract
In the wireless body area network (WBAN), the wearable device can monitor the patient's physiological information and send information to a server so that doctors can remotely diagnose the patient. As the patient's physiological information is sensitive, transmitting the data in the WBAN may reveal patient's privacy. In addition, in a multi-server environment, each server is usually independent of each other. However, most existing authentication schemes for WBAN either use a single-server model or do not consider multi-server switching issues. Therefore, we propose a computationally efficient mutual authentication and key agreement scheme for multi-server switching in WBAN. Our scheme ensures that patients can implement secure switching servers at any time in a multi-server environment. Our scheme proves to be secure under the Real-Or-Random model and ProVerif. In addition, compared with related schemes, our scheme solves the server switching problem while reducing the computational cost.