Design of Generalized Fluctuation Function for Reversible Data Hiding in Encrypted Image

Abstract

, Young-Sik Kim°요 ABSTRACTRecently, Zhang proposed a scheme to hide information in encrypted images using synchronous stream ciphers.After the receiver decrypts the encrypted image and extracts data by calculating the spatial correlation property value using the fluctuation function which is designed to calculate spacial correlation between adjacent pixels in a decrypted image. Then, Hong improved the Zhang's data hiding scheme by introducing the side match technique. In this paper, a novel fluctuation function is proposed to reduce the recovery errors which arise during extracting hidden data. Then, we also demonstrated that the proposed fluctuation function outperforms the previous functions through computer simulations for sample images. 상이 되는 것을 피하는 것이 가능하다 [3,4] .