Description

ABSTRACT

There are also a number of works on data hiding in the encrypted domain. The reversible data

hiding in encrypted image is investigated in. Most of the work on reversible data hiding focuses

on the data embedding/extracting on the plain spatial domain. This method by reserving room

before encryption with a traditional RDH algorithm, and thus it is easy for the data hider to

reversibly embed data in the encrypted image. The proposed method can achieve real reversibility,

that is, data extraction and image recovery are free of any error. Thus the data hider can benefit

from the extra space Emptied out in previous stage to make data hiding process effortless. The

proposed method can take advantage of all traditional RDH techniques for plain images and

achieve excellent performance without loss of perfect secrecy.