Firmanto, Bayu, Devita Putri Kusuma Ningrum, and Arief Bramanto Wicaksono Putra. 2021. “Perbandingan Hasil Performa Optimasi Transposisi Hill Cipher Dan Vigenere Cipher Pada Citra Digital”. SMARTICS Journal 7 (2). Malang, Jawa Timur, Indonesia:65-71. https://doi.org/10.21067/smartics.v7i2.5931.