Design and Implementation of a Smart Healthcare System Using Blockchain Technology with A Dragonfly Optimization-based Blowfish Encryption Algorithm

Abstract

Because the worth of our health is incalculable, healthcare is one of the most important aspects of our life. However, the present healthcare system lacks excellent service, availability, and convenience of use. Because of its benefits like crypto-security, transparency, data integrity, and a decentralized data network, blockchain technology has been shown to be applicable in almost every field. A smart healthcare system with a blockchain data network delivers transparency, quick and faster access, privacy, reliability, and more in today’s world. This chapter proposes a blockchain based smart healthcare system. Here we use smart contracts for validating the patient data. To verify the data in the blocks Proof of Stake (PoS) consensus protocol is employed. We propose Dragonfly Optimization based Blowfish Encryption algorithm (DO-BEA) that generates multiple keys for encrypting the data. The performance of the proposed system is evaluated and compared with the conventional approaches. The suggested approach has made it easier to store patient information safely and securely in the health-care system. In all circumstances, the information kept has been demonstrated to be reliable and unchanging, and it needs the consent of appropriate authorities. Healthcare becomes more safe, decentralized, automated, and affordable to everyone as a result.