Privacy and security framework for medical data in a cloud infrastructure utilizing lightweight blockchain technology

Cloud-based information has consistently attracted cyber attackers. Medical Data (MD) on the cloud has emerged as a new focal point of interest. Assaults on MD may have devastating repercussions for healthcare companies. The decentralized management of cloud data helps mitigate the impact of assaults. A public ledger supported by a decentralized network of peers has been shown to provide reliable, auditable computing using Blockchain Technology (BT). Implementing authorization mechanisms and cryptographic primitives is inadequate for mitigating contemporary cyber risks and resolving privacy and security issues related to cloud-based environments. This study presents a Privacy and Security Framework in Cloud Infrastructure employing Lightweight Blockchain Technology (PSF-CI-LBT) for MD. A patient-focused MD management program using BT for storage has been introduced to enhance privacy. Cryptographic algorithms are employed to encrypt patients' MD and to guarantee concealment. The encryption, decryption time, and economic feasibility (cost) of the proposed technique's smart contract (SC) framework are assessed, along with the methodologies used for analyzing MD to encrypt and mask a patient's MD.