Differential cryptanalysis of image cipher using block-based scrambling and image filtering

Abstract Recently, an image encryption algorithm using block-based scrambling and filtering was proposed by Hua et al. The main idea of the is to utilize permutate diffuse plain-images. In this paper, we analyze security problems in detail break a codebook attack. A linear relation between plain-images cipher-images disclosed differential cryptanalysis. Using relation, build containing ( M × N + 1 ) pairs corresponding plain-images, where size attack indicates that insecure. To defend attack, improved proposed. Experimental results show not only inherits merits original algorithm, but also improves robustness against