Pramusinto, Wahyu, et al. ā€œImplementation of AES-192 Cryptography and QR Code to Verify the Authenticity of Budi Luhur University Student Certificateā€. Jurnal Pendidikan Teknologi Kejuruan, vol. 3, no. 4, Nov. 2020, pp. 209-15, https://doi.org/10.24036/jptk.v3i4.14823.