An efficient image encryption scheme combining Rubik's cube principle with masking

Abstract

In the last two decades, chaos mapping-centered image enciphering techniques acquired approval against various crypt analytical attacks, but these enciphering algorithms are confined by their insignificant key spaces and weak security particularly if the used chaotic map is one-dimensional. In this chapter, an efficient private key enciphering scheme for encrypting gray and color images has been suggested, which is centered on the concept of integrating Rubik’s cube encryption principle with the chaos-based masking of image. Image is first permutated through the Rubik’s cube encryption technique and further through masking, which enhances the security and efficacy of method. The key for creating the mask of image is obtained through Rubik’s cube keys and a chaotic technique. The projected technique can encipher both gray and color images irrespective of size. Security and time analysis are brought off on the scheme to corroborate its efficiency, robustness, and feasibility. Analysis shows the scheme has a faster rate of encryption and is more capable of resisting various crypt crypt analytical and statistical attacks in comparison to recent related techniques. Simulation and investigation of the results are done using MATLAB.