A Novel Image Encryption Algorithm Based on Cellular Automata and Chaotic System

摘要

This paper introduces a novel image encryption scheme based on chaotic maps and toggle cellular automata(TCA). In confusion stage, the proposed scheme utilizes logistic map to construct a nonlinear sequence for scrambling the plain-image. Then in diffusion stage, TCA is constructed by setting up the inversion rule and the image which has been processed by chaotic sequence is encryption again by using the TCA iteration method. Theoretical analysis and experimental results demonstrate the proposed algorithm achieves a high security level and processes good performance against common attacks like differential attack and statistical attack.