Journal
OPTICS COMMUNICATIONS
Volume 341, Issue -, Pages 263-270Publisher
ELSEVIER
DOI: 10.1016/j.optcom.2014.12.045
Keywords
Optical encryption; 3-D chaotic map; Image scrambling; Random encoding
Categories
Funding
- National Natural Science Foundation of China [61271350, 61374178, 61202085]
- Fundamental Research Funds for the Central Universities [N120504005]
- Liaoning Provincial Natural Science Foundation of China [201202076]
- Specialized Research Fund for the Doctoral Program of Higher Education [20120042120010]
- Ph.D. Start-up Foundation of Liaoning Province [20111001, 20121001, 20121002]
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We demonstrate an optical image encryption scheme using 3-D chaotic map based joint image scrambling and random encoding in gyrator domains. A novel image confusion approach that can well address the drawbacks of typical image permutation ciphers is developed to firstly shuffle the plaintext. Then the scrambled image is random phase encoded in the spatial domain and gyrator transform domain. A three-dimensional chaotic map is introduced to generate key stream elements. Simulations demonstrate that the cryptosystem has satisfactory cryptographic features and owns high robustness against noise perturbation as well as occlusion attack. (C) 2014 Elsevier B.V. All rights re.served.
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