Park, Yoon-Jae, Yong-Hoon Lim, and Myung-Sin Chae. “A Study on Digital Signature Authentication Algorithm Based on Multi-Factor and Public Key Infrastructure”. International Journal of Engineering and Technology 8, no. 1.4 (February 20, 2026): 630–639. Accessed February 25, 2026. https://www.sciencepubco.com/index.php/IJET/article/view/26320.