hChain: Blockchain Based Healthcare Data Sharing with Enhanced Security and Privacy Location-Based-Authentication
Musharraf N. Alruwaill, Saraju P. Mohanty, Elias Kougianos
Abstract
In smart healthcare, blockchain technology addresses existing concerns with security, privacy, and electronic healthcare records. In addition, utilizing edge devices with IoMT devices is very advantageous for addressing security, computing, and storage challenges. Symmetric and asymmetric keys are used to conceal sensitive information from unauthorized parties. Moreover, the hash function SHA256 helps for data alteration detection. The proposed system uses a blockchain-based smart healthcare system using IoMT devices for continuous patient monitoring. The edge device is used to hash and encrypt data and provide additional computational capability. A symmetric key maintains data privacy in the blockchain, allowing patients to safely share data through smart contracts while preventing unauthorized physicians from seeing it. A verification node and blockchain sign and validate patient data in the healthcare provider system using an asymmetric key. Location-based authentication is addressed to ensure the authenticity and data source.