Abstract

Abstract


Sensitive information being shared on the internet is growing. Because of this, it is increasingly necessary to take security measures whilst this information travels in the network. Digital steganography allows one to send sensitive information in a hidden manner. Although there is a plethora of techniques for such a goal, finding an appropriate one is not always simple. This paper implements and compares spatial-domain digital steganography techniques in both RGB and grayscale images. A frequency-domain heuristic for reducing the visual impact of digital steganography in grayscale images is presented. As another result of this work, a dataset is also available in the Kaggle platform with 18 GB of images, containing secret messages using the techniques under study.