Nasution, Nadia Widari, Okki Kurnia, Devid Trinaldo Simatupang, and Syahelma Fithri. “Implementation of Symmetric Key Cryptography Algorithm Using Vigenere Cipher Method for Data Security”. Jurnal Minfo Polgan 15, no. 2 (May 30, 2026): 1117-1124. Accessed June 6, 2026. https://jurnal.polgan.ac.id/index.php/jmp/article/view/16148.