Abstract
With the pervasiveness of the Internet of Things (IoT) and the rapid progress of wireless communications, Wireless Body Area Networks (WBANs) have attracted significant interest from the research community in recent years. As a promising networking paradigm, it is adopted to improve the healthcare services and create a highly reliable ubiquitous healthcare system. However, the flourish of WBANs still faces many challenges related to security and privacy preserving. In such pervasive environment where the context conditions dynamically and frequently change, context-aware solutions are needed to satisfy the users' changing needs. Therefore, it is essential to design an adaptive access control scheme that can simultaneously authorize and authenticate users while considering the dynamic context changes. In this paper, we propose a context-aware access control and anonymous authentication approach based on a secure and efficient Hybrid Certificateless Signcryption (H-CLSC) scheme. The proposed scheme combines the merits of Ciphertext-Policy Attribute-Based Signcryption (CP-ABSC) and Identity-Based Broadcast Signcryption (IBBSC) in order to satisfy the security requirements and provide an adaptive contextual privacy. From a security perspective, it achieves confidentiality, integrity, anonymity, context-aware privacy, public verifiability, and ciphertext authenticity. Moreover, the key escrow and public key certificate problems are solved through this mechanism. Performance analysis demonstrates the efficiency and the effectiveness of the proposed scheme compared to benchmark schemes in terms of functional security, storage, communication and computational cost.
Highlights
In recent years, the rapid technological advancements in innovative health-oriented networking, wireless communication technologies and medical sensors have enabled the Wireless Body Area Network (WBAN) to become a promising networking paradigm [1][2]
A WBAN consists of a set of implantable medical devices (IMDs) [3] collecting real-time biomedical data such as heart rate, blood pressure, and pulse
We introduce a novel Hybrid Certificateless Signcryption (H-CLSC) scheme that combines the CiphertextPolicy Attribute-Based Signcryption (CP-ABSC) and IdentityBased Broadcast Signcryption (IBBSC) features [4][5] to address the secure communication problem and provide an adaptive context-aware privacy
Summary
The rapid technological advancements in innovative health-oriented networking, wireless communication technologies and medical sensors have enabled the Wireless Body Area Network (WBAN) to become a promising networking paradigm [1][2]. In this context, the deployment of WBAN provides ubiquitous healthcare system that ensures timely medical treatment and clinical diagnosis. A nurse who has a restricted access compared with a doctor in normal situations can gain additional permissions in emergency situations In such critical context, privacy may be restricted or relaxed given that safety is more important than security. After detecting a critical situation an alarm is sent to the direct doctor If he doesn’t response during a predefined period, the privacy can be restricted and the nurse can access to patient’s data.
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