An Efficient Encryption Algorithm Based on Image Reconstruction

Abstract

An efficient image encryption algorithm is proposed, based on image reconstruction using some adjacent pixel characteristics. Since the permutation of sub-images composing of high 4-bits of the original image has a relatively high computational complexity, in the new scheme the permutation of sub-images is performed with low 4-bits instead, which therefore has a lower computational complexity. Experiment has been carried out, showing relatively high efficiency and security of the new cryptosystem.