Viet , Nguyen Quoc, and Ngo Manh Cuong. “Proposal of an End-to-End Encrypted Chat System With Digital Signature and Vietnamese Character Support Based on Elliptic Curve”. Journal of Science and Technology on Information security 3, no. 26 (December 31, 2025): 39-49. Accessed February 11, 2026. https://isj.vn/index.php/journal_STIS/article/view/1158.