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Efficient Video Encryption by Image Key Based on Hyper-chaos System

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2 Author(s)
Alirezaei, V. ; Azad Univ. Mashhad, Mashhad, Iran ; Yaghbi, M.

In this paper, an efficient video encryption scheme is constructed by image key and is based on hyper-chaos system. The chaotic lattices are used to generate pseudorandom sequences and then selected pixel and bit pixel of image key encrypt frame blocks one by one. By iterating chaotic maps for certain times, the generated pseudorandom sequences obtain high initial-value sensitivity and good randomness. The pseudorandom-bits in each lattice are used to select pixel and bit pixel of image key and then encrypt the Direct Current coefficient (DC) and the signs of the Alternating Current coefficients (ACs). Theoretical analysis and experimental results show that the scheme has good cryptographic security and perceptual security, and it does not affect the compression efficiency apparently. These properties make the scheme a suitable choice for practical applications.

Published in:

Multimedia Communications (Mediacom), 2010 International Conference on

Date of Conference:

7-8 Aug. 2010

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