Adaptive Key Management-Based Privacy Preservation Protocol for Healthcare Data

With the advent of the concept of smart healthcare emerging out of the Internet of Things applications, the researchers concentrate on proposing a possible solution for exchanging and storing the Patient Health Records (PHR). Current practices over cloud-oriented centralized data centers lead to increased cost of maintenance, need huge storage space, and cause privacy concerns regarding the sharing of information over an exposed network. This urges to model a framework that enables the security as well as real-time sharing of big medical data effectively within a trustless environment. In this context, this article proposes to generate an adaptive patient-centric key management protocol for healthcare monitoring system with the help of blockchain technology. The transmission of PHR from patient to doctor or vice versa is handled through a new key management privacy preservation model. The PHR data is stored in blockchain and is sanitized by the adaptive key agreement protocol with the help of Grey Wolf Optimization (GWO) using a valuable objective model. The restoration process also depends on the adaptive key for retrieving the original information. The proposed protocol is validated by comparing it with the state-of-the-art models with special concentration to the security aspects.