HARYONO, W. Comparison Encryption of How to Work Caesar Cipher, Hill Cipher, Blowfish and Twofish. Data Science: Journal of Computing and Applied Informatics, [S. l.], v. 4, n. 2, p. 100–110, 2020. DOI: 10.32734/jocai.v4.i2-4004. Disponível em: https://talenta.usu.ac.id/JoCAI/article/view/4004. Acesso em: 1 sep. 2025.