Journal
IEEE-CAA JOURNAL OF AUTOMATICA SINICA
Volume 4, Issue 2, Pages 381-388Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JAS.2016.7510127
Keywords
Fractional order chaotic system; image encryption; subsystem; switching
Categories
Funding
- National Natural Science Foundation of China [313010 80]
- China Postdoctoral Science Foundation Project [2015M582122, 2016T90 644]
- National Key Technology Support Program of China [2015BAF13B00]
- Natural Science Foundation of Shandong Province [ZR2015FL001]
- Open Project of State Key Laboratory of Crop Biology [2013KF10]
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Many studies on fractional order chaotic systems and secure communications have been carried out, however, switching fractional order chaotic system and its application to image encryption have not been explored yet. In this paper, a new switching fractional order chaotic system is proposed, containing fractional order Chen system and the other two fractional order chaotic systems. Chaotic attractors and dynamical analysis including Lyapunov exponent, bifurcation diagram, fractal dimension, dissipation, stability and symmetry are shown firstly. After that, some circuit simulations through Multisim are presented. By controlling switch k(1) and k(2), switching among the three fractional order chaotic subsystems can be realized. Finally, we apply the switching fractional order chaotic system to image encryption using exclusive or (XOR) encryption algorithm. The encryption scheme could increase randomness and improve speed of encryption.
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