Data hiding in partially encrypted HEVC video

In this study, an efficient scheme for hiding data directly in partially encrypted versions of high efficiency video coding (HEVC) videos is proposed. The content owner uses stream cipher to selectively encrypt some HEVC‐CABAC bin strings in a format‐compliant manner. Then, the data hider embeds the...

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Bibliographic Details
Published in:ETRI journal 2020, 42(3), , pp.446-458
Main Author: Xu, Dawen
Format: Article
Language:English
Subjects:
context adaptive binary arithmetic coding (CABAC)
data hiding
encrypted domain
high efficiency video coding (HEVC)
전자/정보통신공학
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Summary:In this study, an efficient scheme for hiding data directly in partially encrypted versions of high efficiency video coding (HEVC) videos is proposed. The content owner uses stream cipher to selectively encrypt some HEVC‐CABAC bin strings in a format‐compliant manner. Then, the data hider embeds the secret message into the encrypted HEVC videos using the specific coefficient modification technique. Consequently, it can be used in third‐party computing environments (more generally, cloud computing). For security and privacy purposes, service providers cannot access the visual content of the host video. As the coefficient is only slightly modified, the quality of the decrypted video is satisfactory. The encrypted and marked bitstreams meet the requirements of format compatibility, and have the same bit rate. At the receiving end, data extraction can be performed in the encrypted domain or decrypted domain that can be adapted to different application scenarios. Several standard video sequences with different resolutions and contents have been used for experimental evaluation.
ISSN:1225-6463
2233-7326
DOI:10.4218/etrij.2018-0484