Blockchain Based Health Care Management System

Abstract

Electronic health records (EHRs) are only handled by hospitals and not patients, rendering medical advice in several hospitals more difficult. Patients ought to rely on their own healthcare information and restore their own patient records control. The exponential advancement of blockchain technologies facilitates wellness for the General population, medical records and patient knowledge included. This technology provides treatment professionals and patients with detailed and unchanging details and access to EHRs free of charge. In this article, we introduce an attribute-based signature scheme with several authorities to ensure that the blockchain-encapsulated EHRs are legitimate, where a patient endorses an attribute message and does not share details other than the proof he has attested to them. By swapping the hidden pseudorandom feature seeds between the authorities, the protocol resists N-1 deceptive authorities to attack conspiracies. We also formally show that this multiple authority attribute-based signature approach(MAABS) is protected in a random oracle paradigm by imperfection and absolute privacy in the presumptions of bilinear Diffie-Hellman. Using SHA-256 as Hashing algorithm to provide perfect privacy.