Abstract
Health care is a critical point for cloud computing, where it offers affordable and optimal data management. Nevertheless, some challenges continue to arise regarding medical information security especially in the cloud. In the light of this, we put forward a Revolutionary Cloud Secure Healthcare Framework. Data anonymization, hybrid encryption, optimal key selection and blockchain integration technologies are easily integrated. This full framework is grounded with a sound foundation for secure medical data interchange, and it protects patient’s privacy. Thus, in our method, data aggregation and encryption preparation under the differential privacy-based anonymization chosen for Electronic Health Record (EHR) data are performed in a careful manner. Asikey encryption algorithm and key-agreement are being used; The Advanced Secure Elliptic Encryption (ASEE) model combines AES-256 with ECIES for powerful encryption, while the Self-Adaptive Wildebeest Herd Optimization (SA –WHO) method ensures secure key selection. The Ethereum blockchain allows both sensitive and non-sensitive EHR data to be securely encrypted as it is transmitted. A rigorous evaluation validates its effectiveness in the secure transfer of medical data in cloud-based healthcare. Metrics confirm effectiveness of the framework based on comparison with industry standards. This Cloud-based Secure Healthcare Framework guarantees unprecedented security and confidentiality for medical data in the cloud, which increases trust among healthcare stakeholders.