Blockchain-Enabled Secure and Verifiable Health Records Sharing System: Ensuring Data Integrity and Privacy

DOI: https://doie.org/10.0721/Jbse.2024982643

Dr Roopa R, Pallavi B, Kusha K R, Lakshmi Neelima, Dr JayaDeva T S

Keywords:

Blockchain, EHR, data integrity, encryption, security, health records, smart contract.

Abstract:

The sharing of personal health records has the potential to enhance diagnostic accuracy and advance medical research. Currently, to reduce data upkeep costs, personal health records are often entrusted to third-party entities, like cloud service providers. This practice, however, raises concerns about patients losing direct control over their records, as these semi-trusted providers may compromise confidentiality and integrity. Addressing these concerns, we propose a new system for sharing personal health records electronically (EHR) built on blockchain technology. Unlike traditional approaches, our system ensures data integrity verification through a combination of symmetric encryption, attribute-based encryption, and fine-grained access control. Notably, patients can transfer attribute private keys, eliminating security issues associated with centralized attribute authorities. In our innovative system, hash values of encrypted personal health information are stored in the blockchain, with the corresponding index set saved in a smart contract. This architecture significantly improves the efficiency of data integrity verification. Through performance evaluation and security analysis, we demonstrate that our system is both secure and practical for real-world use.

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