High secure digital image steganography based on 3D chaotic map

Abstract

Information security has become an important issue in digital media. Many solutions have been proposed for enhance the digital media security that some of them are based on chaotic maps. The present paper proposes a new spatial domain steganography method based on the chaotic map for digital media, especially digital images. This method uses three variables (x,y,z) for determine pixel position and RGB channel in color images and these variables are generated by proposed chaotic map. The proposed map is very sensitive to initial condition and any changes. Proposed steganography algorithm resists against many existing steganalytic attacks that showed in the experimental results section. In comparison with existing spatial domain steganography based on chaotic maps, proposed algorithm has some advantages, including high resistance against some knowing attacks and larger key space.