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Journal of Electronic Imaging

Efficient reversible data hiding in encrypted H.264/AVC videos
Author(s): Dawen Xu; Rangding Wang
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Paper Abstract

Due to the security and privacy-preserving requirements for cloud data management, it is sometimes desired that video content is accessible in an encrypted form. Reversible data hiding in the encrypted domain is an emerging technology, as it can perform data hiding in encrypted videos without decryption, which preserves the confidentiality of the content. Furthermore, the original cover can be losslessly restored after decryption and data extraction. An efficient reversible data hiding scheme for encrypted H.264/AVC videos is proposed. During H.264/AVC encoding, the intraprediction mode, motion vector difference, and the sign bits of the residue coefficients are encrypted using a standard stream cipher. Then, the data-hider who does not know the original video content, may reversibly embed secret data into the encrypted H.264/AVC video by using a modified version of the histogram shifting technique. A scale factor is utilized for selecting the embedding zone, which is scalable for different capacity requirements. With an encrypted video containing hidden data, data extraction can be carried out either in the encrypted or decrypted domain. In addition, real reversibility is realized so that data extraction and video recovery are free of any error. Experimental results demonstrate the feasibility and efficiency of the proposed scheme.

Paper Details

Date Published: 16 October 2014
PDF: 14 pages
J. Electron. Imag. 23(5) 053022 doi: 10.1117/1.JEI.23.5.053022
Published in: Journal of Electronic Imaging Volume 23, Issue 5
Show Author Affiliations
Dawen Xu, Ningbo Univ. of Technology (China)
Rangding Wang, Ningbo Univ. (China)

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