Cryptanalysis of DRPE using complex S-Box based on linear canonical transform

Abstract

During recent decades, double random phase encoding grasped more attention for researchers. To achieve nonlinearity, it had been done with random S-Box. We exhibit this involvement that DRPE system is much vulnerable in the above methodology. Concatenating anything with DRPE needs an imaginary value, wherein S-Box unsuccessful in it. Used S-Box has been reformed into various sizes. Due to this scenario, S-Box values are replicating. So, complex S-Box has been employed and proposed size of the S-Box is similar to an input image. Numerical simulations such as performance analysis, histogram analysis and 3D plot analysis have been performed out to validate the practicability and trustworthiness of traditional DRPE system with complex S-Box. Moreover, in order to check the cryptanalysis, much other analysis done such as occlusion attack, noise attack, chosen plaintext analysis and sensitivity analysis also accomplished.