Image Encryption and Reversible Watermarking on Quad and Non-quad Channel Images

Abstract

In the past few years, several security algorithms such as encryption and watermarking algorithms have been put forward in order to ensure the security of the digital image from attackers. Most of the encryption algorithm make use of relatively small key spaces and hence it provides less security to attackers.The proposed system make use of an image encryption algorithm that is working on the principle of Rubik's cube. Watermarking techniques are added to the image before applying Rubik's cube algorithm so as to provide more security for the digital image. The above algorithm is applied on both RGB images and ARGB images and a comparison evaluation is done between the two image types using various performance metrics.