Journal
NONLINEAR DYNAMICS
Volume 62, Issue 3, Pages 647-664Publisher
SPRINGER
DOI: 10.1007/s11071-010-9751-1
Keywords
Chaos-based video cryptosystem; Permutation and masking; Baker map; Hyperchaos; H.263 codec
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Funding
- Hong Kong Polytechnic University [G-YG44]
- Natural Science Foundation of China [60774088]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20090031110029]
- Foundation of the Application Base and Frontier Technology Research Project of Tianjin [08JCZDJC21900]
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Chaos-based video encryption algorithms are designed based on selective encryption method. Different from many prevailing MPEG-based video encryption designs, this paper lays out a scheme for a two-level H.263-based video cryptosystem, which skillfully combines the traditional selective encryption algorithm with permutation and subsequent masking operation of the coded H.263-based stream. Lastly, the implementation of the proposed cryptosystem on a local area network (LAN) strongly illustrates the efficiency and feasibility of the two-level chaos-based cryptosystem for practical use in many respects, including processing speed, compression ratio, quality of reconstructed image and security level.
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