Journal
JOURNAL OF ELECTRICAL ENGINEERING-ELEKTROTECHNICKY CASOPIS
Volume 65, Issue 2, Pages 90-96Publisher
SLOVAK UNIV TECHNOLOGY
DOI: 10.2478/jee-2014-0013
Keywords
integer wavelet transform; image encryption; chaotic map; chaos
Categories
Funding
- National High Technology Research and Development Program ('863' Program) of China [2009AA01Z416]
- National Natural Science Foundation of China [31170797, 30870573]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT1109]
- Program for Liaoning Innovative Research Team in University [LT2011018]
- Program for Liaoning Excellent Talents in University [LR201003]
- Program for Liaoning Science and Technology Research in University [LS2010179]
- Key Laboratory of Advanced Design and Intelligent Computing (Dalian University), Ministry of Education, Dalian University [ADIC2010012]
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In recent years, there has been growing interesting in image encryption based on chaotic maps and wavelet transform. In this paper, a novel scheme for image encryption based on chaotic maps and reversible integer wavelet transform is proposed. Firstly, the cipher key which is related to plain-image is used to generate different parameters and initial values of chaotic maps. Then the plain-image is permuted by the order from chaotic maps, and processed by integer wavelet transform. A part of transform coefficient is diffused by the orbits of chaotic maps. Finally, the cipher image is obtained by inverse integer wavelet transform based on the diffused coefficient. Numerical experimental results and comparing with previous works show that the proposed scheme possesses higher security than previous works, which is suitable for protecting the image information.
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