Password Data Authentication Using a Combination of MD5 and Playfair Cipher Matrix 13x13. Buana Information Technology and Computer Sciences (BIT and CS), [S. l.], v. 1, n. 2, p. 33–36, 2020. DOI: 10.36805/bit-cs.v1i2.980. Disponível em: https://journal.ubpkarawang.ac.id/index.php/bit-cs/article/view/980. Acesso em: 13 sep. 2025.