LAPQ-BDTH: Lightweight Authentication for Postquantum Secure Blockchain in Digital Twin Healthcare
Abstract
Rapid progress in healthcare technology has enabled the adoption of digital twin (DT) systems, allowing accurate simulations and real-time monitoring of patients through their virtual counterparts. Nonetheless, the vast amount of data generated in DT-based healthcare, coupled with privacy concerns and potential threats from quantum computing, poses significant challenges for secure data management. To address these issues, this article introduces a novel framework, lightweight authentication for postquantum secure blockchain in DT healthcare (LAPQ-BDTH). The proposed scheme utilizes lattice-based cryptography to provide quantum-resistant security and leverages blockchain with smart contracts to achieve immutable, decentralized storage of DT data, thereby improving integrity and transparency. The performance of LAPQ-BDTH is evaluated against several existing authentication and postquantum schemes, demonstrating its advantages in computational efficiency and communication overhead. Extensive security analysis and performance evaluation confirm that LAPQ-BDTH effectively preserves data confidentiality and integrity. This research lays the foundation for developing secure, resilient, and future-ready healthcare systems.
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