Rachmawanto, Eko Hari, Rizky Syah Gumelar, Qotrunnada Nabila, Christy Atika Sari, and Rabei Raad Ali. 2023. “Testing Data Security Using a Vigenere Cipher Based on the QR Code”. Kinetik: Game Technology, Information System, Computer Network, Computing, Electronics, and Control 8 (4`). https://doi.org/10.22219/kinetik.v8i4`.1734.