Blockchain-powered Healthcare: Revolutionizing Security and Privacy in IoT-based Systems

The rapid growth of the IoT and wearable device industries has expanded remote patient monitoring, but healthcare systems face security vulnerabilities inherent in their client/server architecture. To address these challenges and meet regulatory standards, a shift to a distributed architecture is necessary. Blockchain technology offers promise with its distributed nature and security features. MediSecureNet, proposed in this paper, integrates blockchain and IoT to create a secure healthcare system. Prioritizing security, scalability, and processing speed, MediSecureNet focuses on remote patient monitoring, particularly for chronic conditions. It incorporates a re-encryption proxy for security, blockchain for hash data storage, and smart contracts for access management. Scalability is achieved through an off-chain IPFS database, and an Ethereum-based proof of authority mechanism enhances data storage efficiency.