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High Security Nested PWLCM Chaotic Map Bit-Level Permutation Based Image Encryption

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DOI: 10.4236/ijcns.2012.59065    4,548 Downloads   7,148 Views   Citations

ABSTRACT

Chaotic systems produce pseudo-random sequences with good randomness; therefore, these systems are suitable to efficient image encryption. In this paper, a low complexity image encryption based on Nested Piece Wise Linear Chaotic Map (NPWLCM) is proposed. Bit planes of the grey or color levels are shuffled to increase the encryption complexity. A security analysis of the proposed system is performed and presented. The proposed method combine pixel shuffling, bit shuffling, and diffusion, which is highly disorder the original image. The initial values and the chaos control parameters of NPWLCM maps are derived from external secret key. The cipher image generated by this method is the same size as the original image and is suitable for practical use in the secure transmission of confidential information over the Internet. The experimental results of the proposed method show advantages of low complexity, and high-level security.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Q. Nasir and H. H. Abdlrudha, "High Security Nested PWLCM Chaotic Map Bit-Level Permutation Based Image Encryption," International Journal of Communications, Network and System Sciences, Vol. 5 No. 9, 2012, pp. 548-556. doi: 10.4236/ijcns.2012.59065.

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