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Please use this identifier to cite or link to this item: http://hdl.handle.net/1783.1/6804
Title: Partial video encryption based on alternating transforms
Authors: Au Yeung, Siu-Kei
Zhu, Shuyuan
Zeng, Bing
Keywords: H264/AVC
Partial encryption
Unitary transforms
Video encryption
Issue Date: Oct-2009
Citation: IEEE Signal Processing Letters, vol. 16, no. 10, October 2009, p. 893-896
Abstract: In this letter, we propose a novel video encryption technique that is used to achieve partial encryption where an annoying video can still be reconstructed even without the security key. In contrast to the existing methods where the encryption usually takes place at the entropy-coding stage or the bit-stream level, our proposed scheme embeds the encryption at the transform stage during the encoding process. To this end, we develop a number of new unitary transforms that are demonstrated to be equally efficient as the well-known DCT and thus used as alternates to DCT during the encoding process. Partial encryption is achieved through alternately applying these transforms to individual blocks according to a pre-designed secret key. Analysis on the security level of this partial encryption scheme is carried out against various common attacks and some experimental results based on H.264/AVC are presented.
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URI: http://hdl.handle.net/1783.1/6804
Appears in Collections:ECE Journal/Magazine Articles

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