Pramusinto W, Trya Sartana B, Mulyati S, Amini S. Implementation of AES-192 cryptography and QR code to verify the authenticity of budi luhur university student certificate. JPTK [Internet]. 2020Nov.30 [cited 2025Mar.13];3(4):209-15. Available from: https://jptk.ppj.unp.ac.id/index.php/jptk/article/view/148