Separable dual data hiding scheme for secured data in cloud environment

Robust as well as secure data hiding is capable of providing a promising solution in many copyright protection applications. In this paper, a separable dual data hiding scheme for secured data is developed. Security of carrier image is enhanced by the new proposed TSRM (Tent-Sort-Reshape-Modulation). And security of secret message is ensured by the new proposed PAS (Padova-Arnold- Scrambling). The robustness is increased by dual data hiding, one is zero data hiding, and the other is robust data hiding, in which QWT, SVD, Schur decompositin and entropy rate superpixel segmentation are used. Under different attacks, even if one secret message fails, the other one can still be used for authentication. A large number of experimental results and thorough evaluations confirm that our scheme can obtain higher security, better imperceptibility and stronger robustness under different types of attacks, and achieve better performance than the current state-of-the-art data hiding algorithms.