“Penerapan Keamanan AES-256 Pada Sistem Kehadiran Karyawan Berbasis Kordinat”. Journal of Informatic and Information Security 6, no. 2 (January 2, 2026): 81–94. Accessed January 9, 2026. https://ejurnal.ubharajaya.ac.id/index.php/jiforty/article/view/4963.