A Blockchain-Based Mutual Authentication Scheme With Data Sovereignty for IoT-Based Healthcare Digital Twin Environments

초록

Healthcare digital twin (HDT) is an emerging technology that can improve human life by enabling disease prediction, real-time diagnosis, and personalized prescription from healthcare data of consumer electronics, such as wearable sensors and medical devices. However, the continuous exchange of sensitive data from consumer devices to centralized hospital servers can raise significant security challenges and erodes user data sovereignty, which cannot be fully addressed by existing authentication schemes. Thus, we propose a novel blockchain-based mutual authentication scheme that provides secure communication and data sovereignty for healthcare users. The proposed scheme integrates decentralized identifiers, verifiable credentials, and elliptic curve cryptography to establish secure and user-centric access control between consumer healthcare devices and medical services. To prove the security and robustness against various attacks of the proposed scheme, we perform various formal and informal analysis. Furthermore, performance evaluations show that the proposed scheme achieves lower computational overhead compared to related schemes, confirming the suitability for resource-constrained consumer devices. We also conduct simulation and implementation studies to prove the practical deployment of the proposed scheme. Thus, the proposed scheme offers practical and secure communications for building trustworthy, user-centric healthcare services, paving the way for next-generation personalized medicine by consumer electronics technology. © 1975-2011 IEEE.

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