Data Security of Encrypted Data Using Hash-Based Message Authentication Code (HMAC) and T9-Based Data Conversion. PUP Journal of Science and Technology, [S. l.], v. 9, n. 1, p. 12–23, 2018. DOI: 10.70922/rmdhkn17. Disponível em: https://publishing.pup.edu.ph/ojs/index.php/PUP-JST/article/view/476. Acesso em: 4 apr. 2025.