“Securing Cloud Data: Combining SABAC Models, Hash-Tag Authentication with MD5, and Blockchain-Based Encryption for Enhanced Privacy and Access Control”, int. J. Eng. Res. Sci. Tech., vol. 18, no. 3, pp. 149–165, Aug. 2022, Accessed: Aug. 20, 2026. [Online]. Available: https://ijerst.org/index.php/ijerst/article/view/436