Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/20618
Title: On the design of perceptual MPEG-video encryption algorithms
Authors: Li, S
Chen, G
Cheung, A
Bhargava, B
Lo, KT 
Keywords: Cryptanalysis
Fixed-length codeword (FLC)
Known/chosen-plaintext attack
MPEG
Perceptual encryption
Issue Date: 2007
Publisher: IEEE-Inst Electrical Electronics Engineers Inc
Source: IEEE transactions on circuits and systems for video technology, 2007, v. 17, no. 2, p. 214-223 How to cite?
Journal: IEEE Transactions on Circuits and Systems for Video Technology 
Abstract: 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.
URI: http://hdl.handle.net/10397/20618
DOI: 10.1109/TCSVT.2006.888840
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