Preserve the medical data using secure partially homomorphic encryption with blockchain technology in smart healthcare

Abstract

Information about healthcare is crucial for both individuals and service providers. It is essential to increase the safe sharing and upkeep of electronic healthcare records (EHR). To communicate health data across healthcare stakeholders, EHR systems have traditionally depended on a centralized system (such as the cloud), which may have exposed undisclosed and secret persistent intelligence. EHR has had trouble addressing the needs of many participants and approaches in relationships of separation, security, and supplementary legal requirements. Blockchain is a distributed, decentralized journal system that can offer capabilities for safe, verified, and unchangeable data transfer. Blockchain uses consistent cryptographic techniques (hashes) to construct a distributed ledger system that enables distributed activity without the need for a central authority. Due to the immutability of a blockchain network, data exploitation is challenging and obvious. We provide a a blockchain-based architecture that uses the Proof of Stake (POS) cryptographic consensus mechanism to authenticate user identification and secure EHR exchange amongst multiple electronic healthcare systems. In order to safeguard the data that was outsourced This study suggests the use of Secure Partially Homomorphic Encryption (SPHE), which allows users to multiply and divide the ciphertext. The cloud environment&s;s access control policy is more adaptable. The results demonstrate that, in terms of superpower use, authenticity, and medical data protection, the suggested technique outperforms the alternatives.