Data hiding with Pixel scrambling techniques by modified shuffling.

Abstract

Image scrambling is an effective method for providing image security. The basic idea of scrambling is to change the image pixel positions through matrix transform to achieve the visual effect of disorder. Cellular automata can be successfully applied for this purpose. This paper presents digital image scrambling based on modified shuffling. The method proposed is a simple but powerful technique. The method uses R-Prime Shuffle to encrypt the image. It makes use of two different R-Prime numbers for rows and columns which make it more robust to decryption.The proposed algorithm transforms drastically the statistical characteristic of original image information, so, it increases the difficulty of an unauthorized individual to break the encryption. The simulation results and the performance analysis show that the algorithm has large secret-key space, high security, fast scrambling speed and strong robustness.