An Effective Reversible Data-Hiding in Encrypted Images Using Memory Cellular Automata

Abstract

This article attempts to propose an effective reversible data-hiding in encrypted images using memory cellular automata. The image content owner encrypts the original image using a Paillier homomorphic encryption algorithm with an encryption key and uploads the encrypted image into the cloud server. Then, the data hider embeds additional data into the encrypted image with an embedding key. Whenever the user gets both keys, the original image can be recovered without any errors. Compared to existing reversible data-hiding in encrypted image methods, the proposed method has better embedding rates, embedding payloads, and high-security performance.