Segurança na transmissão de dados : uma abordagem utilizando criptografia e esteganografia de imagem

Abstract

This paper addresses the issue of data protection in the modern context, where secure data trans mission is increasingly necessary due to the rapid increase in data generation and sharing. The need to protect this data from external and internal threats is fundamental to the functioning of data transmission environments. In this context, the study focuses on secure data transmission through the combination of encryption and steganography techniques. It begins with a review of the theoretical foundations of these areas, highlighting important concepts such as communi cation protocols, cryptographic algorithms, and steganographic hiding methods. Next, I present the development of a practical image steganography tool, detailing its architecture, operation, and algorithms used. Rigorous tests were conducted to evaluate the performance of the tool, considering metrics such as MSE, PSNR, SSIM, and payload capacity across different image si zes. The results obtained provided valuable data on the effectiveness of the tool’s steganography in protecting data confidentiality and the integrity of its digital communication. I conclude by highlighting what was discovered in the tests and proposing directions for future research and development of my tool.