Data Hiding in Reviser Room for Embedded Before Encryption

Abstract

Data hacking is very challenging problem in today’s internet world. There are number of techniques to secure the data. So, the data hiding in the encrypted image comes into the picture, but occurrence of distortion at the time of data extraction is a main problem. So Reversible Data Hiding (RDH) in encrypted image is used. With this method original cover can be recovered. In this paper, we propose a novel 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. This method provides improved PSNR ratio and recovers image with its original quality.