Implementation of the Cosine Transform (DCT) Steganography Method for Embedding Secret Messages in Image Media. International Journal of Science and Informatics Technology (IJOSIT), [S. l.], v. 1, n. 01, p. 14–20, 2026. Disponível em: https://www.ijosit.org/index.php/ijosit/article/view/3. Acesso em: 26 mar. 2026.