On the design of perceptual MPEG-video encryption algorithms
Li, SJ, Chen, G, Cheung, A, Bhargava, B and Lo, K-T (2007) On the design of perceptual MPEG-video encryption algorithms IEEE Transactions on Circuits and Systems for Video Technology, 17 (2). 214 - 223. ISSN 1051-8215
IEEETCAS-VT2007.pdf - Accepted Version
Available under License : See the attached licence file.
In this paper, some existing perceptual encryption algorithms of MPEG videos are reviewed and some problems, especially security defects of two recently proposed MPEG-video perceptual encryption schemes, are pointed out. Then, a simpler and more effective design is suggested, which selectively encrypts fixed-length codewords in MPEG-video bit streams under the control of three perceptibility factors. The proposed design is actually an encryption configuration that can work with any stream cipher or block cipher. Compared with the previously-proposed schemes, the new design provides more useful features, such as strict size-preservation, on-the-fly encryption and multiple perceptibility, which make it possible to support more applications with different requirements. In addition, four different measures are suggested to provide better security against known/chosen-plaintext attacks.
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|Divisions:||Faculty of Engineering and Physical Sciences > Computing Science|
|Depositing User:||Symplectic Elements|
|Date Deposited:||11 May 2012 13:00|
|Last Modified:||23 Sep 2013 19:26|
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