Application of Block Chain in EHR’s System for Maintaining the Privacy of Patients Record

Abstract

Electronic health records (EHR’s) system provides improved care of patients and allows easy access to information about their data about health. According to Health Insurance Portability and Accountability Act (HIPPA), security rules are accountable for maintaining security and privacy of patients. There are three main issues that we face with EHR’s, i.e., legislative gaps, lack of trust and lack of patient control. To address these issues, we collaborate EHR’s with blockchain to provide a platform where we have increased transparency, tracking information, ledger (hard to tamper), cost reduction, immutability and unforgeability. It allows patients to have complete access to their medical data which instead were controlled by hospitals only. Attribute-based signature allows us to sign a message without displaying any information; it only displays an evidence that he has signed it. By using DES and RSA, we provide unforgeability and privacy of attribute signer. SHA-2 as a hashing technique ensures security of stored data.