An Efficient Blockchain-Enabled MAES-RAC Framework for Secure Storage and Controlled Access of Healthcare Data

Abstract

In healthcare, secure transmission and access control of medical data are critical. While various systems have been introduced for secure medical data storage and access, existing healthcare systems often rely on public cloud storage for patient data collection and storage. Although convenient, these approaches introduce significant challenges, including reduced security, higher computational load, low scalability, and increased encryption and decryption times. Therefore, this research proposes a Modified Advanced Encryption Standard and Rule-based Access Control (MAES-RAC) framework to address these drawbacks and provide secure medical data storage and access. The MAES-RAC framework enhances security through the incorporation of a Modified Advanced Encryption Standard (MAES) algorithm, which accelerates the encryption process with lower computations and offers improved security. Moreover, the Modified Rule-based Access Control (MRAC) mechanism ensures security by integrating the Bell-LaPadula (BLP) model, preventing unauthorized data access. Additionally, employing blockchain technology to store medical data enhances the scalability and interoperability of the MAES-RAC framework. Experimental results demonstrate that the MAES-RAC framework achieves an encryption time of 1.44ms, a decryption time of 1.23ms, memory usage of 394.6KB, a genuine user rate of 0.931, and a responsiveness of 4.255ms when using a healthcare management system dataset. .