Journal of Applied Sciences ›› 2021, Vol. 39 ›› Issue (6): 906-922.doi: 10.3969/j.issn.0255-8297.2021.06.003

• Intelligent Security Defense Theory and Technology in Special Region • Previous Articles     Next Articles

Reversible Data Hiding in Encrypted Domain with Block Rearrangement

YANG Yang, LI Xinran, HU Jinchuan   

  1. School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
  • Received:2020-10-12 Published:2021-12-04

Abstract: We propose a reversible data hiding scheme in encrypted domain based on block rearrangement in bit plane. Firstly, specific encryption methods, including scrambling and block rearranging, are applied to encrypt an original image. Secondly, scrambled bit planes are divided into non-overlapping blocks, including homogeneous blocks and nonhomogeneous blocks, and a label map is generated to identify these two kinds of blocks. Thirdly, after embedding necessary auxiliary data into embedded homogeneous blocks, data hider can embed additional data into the remaining available blocks. Based on the availability of encryption key and data hiding key, receivers can realize separable operations of data extraction efficiently and image recovery losslessly. Experimental results demonstrate that the proposed scheme gains improvement both in embedding capacity and in the quality of decrypted image.

Key words: reversible data hiding, image encryption, block rearrangement, image recovery

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