Istiyanto JE, Natan O, Augoestien NG, et al. Enhancing Security Using ECDSA-Based Hardware Security Module with DS28E38 Secure Data Authentication IC. IJIE. 2025;17(9):12-27. Accessed April 7, 2026. https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/19876