Ethical Encrypted Search Scheme for Medical Database

Abstract

E-medical records are highly sensitive and require secure storage, typically in encrypted form. However, encrypting the records can make them difficult to search and utilize within existing medical database systems. Additionally, managing access to these records, especially when multiple authorities are involved, presents challenges in ensuring security and scalability.To address these issues, we propose an authorized searchable encryption scheme designed for a multi-authority setting. This scheme utilizes the RSA (Rivest-Shamir-Adleman) function to enable each authority to control and limit search capabilities based on clients' privileges. Furthermore, to enhance scalability, we employ multi-authority attribute-based encryption, allowing the authorization process to be streamlined even across policies from multiple authorities.We have conducted thorough security and cost analyses, as well as experimental evaluations, demonstrating that our proposed scheme introduces only moderate overhead to existing searchable encrypted systems. Keywords--e-medical system, cloud storage, forward security.