Distinct Revocable Data Hiding In Ciphered Image

Abstract

This scheme proposes an authenticated and secure reversible data hiding in cipher images. Nowadays, more attention is paid to reversible data hiding in encrypted images, as the original cover can be reversibly recovered after embedded data is retrieved. In the first stage, the content owner encrypts the original image using an encryption key. Then, a data hider compresses the least significant bits (LSB's) of the encrypted image using a data hiding key to create space to store some additional data. Then, if a receiver has the data hiding key, he can extract the additional data from the encrypted image though he is unaware of the image content. If the receiver has the encryption key with him, then he can decrypt the data to obtain an image similar to the original image. If the receiver has both the data hiding key as well as the encryption key, then he can extract the additional data as well as he can recover the original content.