Extended Selective Encryption of H.264/AVC (CABAC)- and HEVC-Encoded Video Streams

This paper proposes an extended selective encryption (SE) method for both H.264/advanced video coding (AVC) (CABAC) and High Efficiency Video Coding (HEVC) streams, addressing the main security issue that SE is facing: content protection, related to the amount of information leakage through a protec...

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Bibliographic Details
Published in:IEEE transactions on circuits and systems for video technology Vol. 27; no. 4; pp. 892 - 906
Main Authors: Boyadjis, Benoit, Bergeron, Cyril, Pesquet-Popescu, Beatrice, Dufaux, Frederic
Format: Journal Article
Language:English
Published: New York IEEE 01.04.2017
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Institute of Electrical and Electronics Engineers
Subjects:
Channel coding
Coding
Computer Science
Context-adaptive binary arithmetic coding (CABAC)
Encryption
Engineering Sciences
H.264/advanced video coding (AVC)
High Efficiency Video Coding (HEVC)
Image Processing
selective encryption (SE)
Signal and Image Processing
Streaming media
Video compression
Video data
CABAC
HEVC
H.264/AVC
Selective Encryption
ISSN:1051-8215, 1558-2205
Online Access:Get full text
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Summary:This paper proposes an extended selective encryption (SE) method for both H.264/advanced video coding (AVC) (CABAC) and High Efficiency Video Coding (HEVC) streams, addressing the main security issue that SE is facing: content protection, related to the amount of information leakage through a protected video. Our contribution is the improvement in the visual distortion induced by SE approaches. Previous works on both H.264/AVC (CABAC) and HEVC limit encryption to bins treated by one specific mode of CABAC-its bypass mode-which has the advantage of preserving the overall bitrate, we propose here to also rely on the encryption of the more widely used mode of CABAC-its regular mode. This allows encryption of a major codeword for video reconstruction, the prediction modes for intra blocks/units. Disturbing their statistics may cause bitrate overhead, which is the tradeoff for improving the content security level of the SE approach. A comprehensive study of this compromise between the improvement in the scrambling efficiency and the undesirable aftereffects is presented in this paper, and a specific security analysis of the proposed CABAC regular mode encryption is conducted.
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ISSN:1051-8215
1558-2205
DOI:10.1109/TCSVT.2015.2511879