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A Perceptual Encryption Scheme for HEVC Video with Lossless Compression
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Author(s): Juan Chen (Department of Information Engineering, Hunan Engineering Polytechnic, Changsha, China)and Fei Peng (School of Information Science and Engineering, Hunan University, Changsha, China)
Copyright: 2018
Volume: 10
Issue: 1
Pages: 12
Source title:
International Journal of Digital Crime and Forensics (IJDCF)
Editor(s)-in-Chief: Feng Liu (Chinese Academy of Sciences, China)
DOI: 10.4018/IJDCF.2018010106
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Abstract
Aiming to protect the video content and facilitate online video consumption, a perceptual encryption scheme is proposed for high efficiency video coding (HEVC) video. Based on RC4 algorithm, a key stream generation method is constructed, whose proportion of “1” and “0” can be regulated. During HEVC encoding, four kinds of syntax elements including motion vector difference (MVD)' sign, MVD's amplitude, sign of the luma residual coefficient and sign of the chroma residual coefficient, are encrypted by the regulated key stream. Experimental results and analysis show that the proposed scheme has good perceptual protection for the video content, and some advantages such as low computational cost, format-compliance and no bitrate increase can be achieved. It provides an effective resolution for the paid video-on-demand services.
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