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Harry Witriyono, Sandhy Fernandez. Implementasi Enkripsi Base64, Hashing SHA1 dan MD5 pada QR Code Presensi Kuliah. SATIN [Internet]. 2021Dec.14 [cited 2024Dec.28];7(2):73-1. Available from: http://register.stmik-amik-riau.ac.id/index.php/satin/article/view/724