Um estudo sobre ocultação de dados para imagens digitais

Abstract

Digital security is a growing field of study in various areas of science, which includes stega- nography - the art of writing in a hidden manner - as one of the new research areas. This

undergraduate thesis presents the implementation of a Least Significant Bit (LSB) steganographic technique to embed text messages in image files. The study is based on literature research on data hiding techniques in digital images and the importance of using watermarking as a measure of protection against piracy and image forgery. The paper presents the theoretical concepts involved in the LSB technique, as well as the methods and tools used for the insertion of the digital watermark. The results obtained from tests conducted prove the effectiveness of the LSB technique in securely and efficiently embedding digital watermarks in digital images.