Digital Registry in Securing Patient Health Care Data through Blockchain Encryption
Year: 2026
Type: article
Abstract: Purpose: The study develops a secure data management architecture for EHRs that includes biometrics, AES encryption, SHA-256 hashing, a blockchain-based digital registry, and RBAC through smart contracts. Design/Methodology/ Approach: The suggested model will utilise EHR and fingerprint datasets in the processing of healthcare data and biometric authentication. Biometric keys are extracted using fingerprint features to encrypt data using AES. SHA-256 hashing provides data integrity, while the permissioned blockchain and smart contract provide secure data registration, authorisation, and auditing. Performance analysis will be carried out based on authentication accuracy, FAR, FRR, security index, latency, and throughput. Research Limitation: The system has been evaluated under controlled experimental conditions, and large-scale deployments of several medical institutions may pose challenges related to blockchain scalability, interoperability, network overhead, and regulatory compliance. Findings: Experimental results show that the proposed framework provides secure and efficient health data management. The biometric authentication module obtained 88.5% authentication accuracy, while the overall system recorded a 96% security index. The blockchain platform has an average latency of 50 ms and a processing speed of 60 transactions per second. The fingerprint validation process showed a clear separation between the real matching and the imposter scores, significantly reducing attempts at unauthorised access while maintaining efficient system performance Practical Implication: Using blockchain, biometric cryptography, and smart contracts makes data sharing more secure, prevents unauthorised access to information, helps ensure compliance with rules and regulations, and builds greater trust among healthcare professionals. This framework can be used in hospitals, clinics, labs, and telemedicine services to improve the safety of electronic health records. Social Implication: The framework supports better patient outcomes and more dependable healthcare services by lowering the risks of data breaches and identity theft and promoting broader usage of electronic health record systems. Originality/Value: This paper discusses the development of a blockchain-integrated digital registry model that utilises biometric cryptography, AES encryption, SHA-256 hashing, fingerprint-based biometric cryptography, and smart contract-based role-based access control in a single electronic health record security framework.
DOI: 10.26437/v8qqq565
Authors: D. K. Acquah-Amoah, V. Gandhi
Institution: Parul University
Language: English
Subfield: Information Systems
Field: Computer Science
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7225777829