Nguyen HD, Dai TT, Le HD, Huynh TH, Pham PC. Embedding the Real-Time AES-128 Encryption into Programmable Logic Controllers for Secure Modbus TCP/IP Communications in Industrial Control Systems. IJIE. 2025;17(9):45-57. Accessed July 22, 2026. https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/22589