Re AuTh: Lightweight Re Authentication with Practical Key Management for Wireless Body Area Networks
The development in wireless body area networks (WBANs) has facilitated a growth in electronic health in terms of quality and efficiency. Telemonitoring systems observe human vital signs without the need for a patient to be present using WBANs. The data sensitivity of WBAN, mobile users and public channels poses a critical challenge to security and privacy in order to prevent unauthorized access to vital health data. Several solutions have been suggested to ensure secure and effective communications in WBANs; nonetheless, these methods tend to have drawbacks, such as efficiency overhead and protection vulnerabilities. This paper proposes a lightweight authentication and also provides a protocol for re authentication (Re AuTh) The proposed "Re AuTh" utilizes identification and authorization tokens to assist the application provider in authenticating and further to authorize medical users. Such tokens also provide a way to achieve effective key management. The Scyther simulation shows that the proposed Re AuTh has no security vulnerabilities and the informal security analysis further ensures protection of all related possible threats. The performance comparisons with related solutions showed that the proposed Re AuTh effectively provides security services for WBAN in the medical environment and greatly reduces computation costs at the user side.