PERFORMANCE ANALYSIS OF REVERSIBLE DATA HIDING USING AES AND HISTOGRAM SHIFTING.

Reversible data hiding is a prominent field in secure communication. Its importance has been increasing nowadays due to lossless recovery of veiled data and cover image. Both veiled data and marked image can be extracted separately depending upon the availability of the keys. By means of a security key defined by user the content owner encrypt the cover image by 1D logistic map-chaotic based transposition algorithm. As an alternative to direct embedding of data into encrypted image the proposed method encrypt the data using AES and hence provide twofold layer security. Utilizing another user defined data hiding key the data hider hides AES encrypted data into the encrypted image by shifting its histogram. An assortment of performance analysis is carried out in this paper. Out of different RDH algorithms we use histogram shifting for data embedding since it offers better capacity. Hence, the proposed method is a reliable and secure technique for reversible data hiding.