Enhancing EHR interoperability and privacy through blockchain and post-quantum hybrid cryptography

Mahesh, G.; Mishra, Renu

doi:10.47974/JDMSC-2754

Open Access Research Article

Enhancing EHR interoperability and privacy through blockchain and post-quantum hybrid cryptography

^*G. MaheshCorresponding author2022452915.mahesh@dr.sharda.ac.inDepartment of Computer Science & Engineering Sharda School of Engineering and Technology Sharda UniversityGreater Noida, Uttar Pradesh, 201310, IndiaView full profile → , Renu Mishrarenu.mishra@sharda.ac.inDepartment of Computer Science & Engineering Sharda School of Engineering and Technology Sharda UniversityGreater Noida, Uttar Pradesh, 201310, IndiaView full profile →

* Corresponding author · click or hover a name for details

pp. 2477–2488Vol. 29Issue 6June 2026DOI: 10.47974/JDMSC-2754 Crossmark XML

Received:: 01 Nov 2025
Published Online:: 20 Jun 2026
Article type:: Research Article
Language:: EN
Article no.:: JDMSC-2754
Pages:: 2477–2488

Abstract

The Electronic health data (EHRs) employed with benefits of interoperability, better patient care, and obeying laws of regulation like Health Insurance Portability and Accountability Act (HIPAA). Existing and popular regulations like Digital Information Security in Healthcare Act (DISHA) and the General Data Protection Regulation (GDPR) are susceptible to fragmented governance, unauthorized access, and manipulation due to traditional centralized effects. This study introduces a Blockchain-based Patient-Centric Hybrid (BCPCH) method that ensures safe, scalable, and legally acceptable health data interchange through the combination of post-quantum cryptography and dynamic permission management. This paper combines Kyber algorithm for key encapsuplation, Dilithium algorithm for authentication of patient data and Hierarchical Identity-Based Encryption (HIBE) for role-based control to achieve patient-centric authentication Hybrid cryptographic primitives like Dilithium, Kyber, and HIBE are used in this dual-layer architecture to enable encryption, well formed delegation, and quantum-resilient signatures. Smart contracts are utilized for role-based access control and immutability in the Blockchain.When compared to cryptographic algorithms, its results show the best throughput, scalability, post-quantum resistance, and future-ready path for patient-driven, safe, and lawful digital healthcare ecosystems. It also preserves interoperability, promotes patient-driven consent, and makes real-time permission and revocation easier.

Keywords

Interoperability Patient-centric Hybrid cryptography Blockchain Smart contracts Post-quantum

Subject Classifications

94A6068P20

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