Somaida, M. H., W. R. Hakim, R. Ratih, and D. Yusuf. “Implementation of Cryptography for Database Security in a QR Code and Web-Based Student Attendance System”. RIGGS: Journal of Artificial Intelligence and Digital Business, vol. 4, no. 3, Aug. 2025, pp. 533-40, doi:10.31004/riggs.v4i3.2031.