Digital video encryption algorithms based on correlation-preserving permutations
EURASIP Journal on Information Security
Comparison of MPEG video encryption algorithms
Proceedings of the International Conference on Advances in Computing, Communication and Control
On the security defects of an image encryption scheme
Image and Vision Computing
Transparent and perceptually enhanced JPEG image encryption
DSP'09 Proceedings of the 16th international conference on Digital Signal Processing
Visual security evaluation for video encryption
Proceedings of the international conference on Multimedia
Scalable video encryption of H.264 SVC Codec
Journal of Visual Communication and Image Representation
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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