Commutative Encryption and Data Hiding in HEVC Video Compression

Commutative Encryption and Data Hiding in HEVC Video Compression
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HEVC 视频压缩中的交换加密和数据隐藏

DOI:
10.1109/access.2019.2916484
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发表时间:
2019
期刊:
影响因子:
3.9
通讯作者:
Xu Dawen
Xu Dawen
中科院分区:
计算机科学3区
文献类型:
--
作者:
Xu Dawen

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提出了一种高效的HEVC视频交换加密和数据隐藏方案。交换性质允许在不干扰嵌入信号的情况下对隐写视频进行加密,或在加密视频上执行隐写,同时仍然允许完全解密。HEVC标准中的语法元素,包括量化变换系数(QTC)符号、运动矢量差分(MVD)符号、预测内模式(IPM)等都进行了加密处理,极大地扭曲了视频内容,从而保证了感知安全性。数据嵌入采用了特定的QTC修改方法,使得数据隐藏造成的视觉失真非常低。此外,所提出的框架将产生一个符合HEVC格式的比特流,并允许在加密域或解密域提取隐藏信息。采用不同分辨率和不同内容的基准视频序列进行实验评价。
In this paper, an efficient commutative encryption and data hiding scheme for HEVC videos is proposed. The commutative property allows ciphering a steganographic video without interfering with the embedded signal or to perform steganography on an encrypted video while still allowing perfect decryption. The syntax elements in the HEVC standard, including the sign of quantized transform coefficient (QTC), the sign of motion vector difference (MVD), and the intra-prediction mode (IPM) are encrypted, which distorts video content greatly and thus keeps perception security. Data embedding employs a specific QTC modification method, which makes the visual distortion caused by data hiding very low. Furthermore, the proposed framework will produce an HEVC format compliant bitstream and permits the hidden information to be extracted either in the encrypted domain or in the decrypted domain. Several benchmark video sequences of different resolutions and diverse contents are used for experimental evaluation.
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