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2018 Volume 43 Issue 5
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WANG Yao1, XU Yang2. On Image Encryption Algorithm Based on Gold Segmentation-Lucas Dynamic Scrambling and Different Diffusion[J]. Journal of Southwest China Normal University(Natural Science Edition), 2018, 43(5): 106-115. doi: 10.13718/j.cnki.xsxb.2018.05.018
Citation: WANG Yao1, XU Yang2. On Image Encryption Algorithm Based on Gold Segmentation-Lucas Dynamic Scrambling and Different Diffusion[J]. Journal of Southwest China Normal University(Natural Science Edition), 2018, 43(5): 106-115. doi: 10.13718/j.cnki.xsxb.2018.05.018
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On Image Encryption Algorithm Based on Gold Segmentation-Lucas Dynamic Scrambling and Different Diffusion

  • 1. Department of Information Engineering, Chongqing City Vocational College, Chognqing 402160, China;
    2. College of Computer Science and Engineering, Guizhou Normal University, Guiyang 550001, China

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  • Received Date: 25/02/2017
  • In order to solve the defect such as low dynamic and random degree resulting in low security caused by same pixel location scrambling process with each round, and the orderly diffusion operation, the image encryption algorithm based on gold segmentation-Lucas dynamic scrambling and different diffusion has been proposed in this paper. Firstly, the plaint pixel scrambling degree was effectively improved by introducing the gold segmentation-Lucas transform mechanism to dynamic transform the permutation changing kernel according to the iteration number so that the pixel scrambling operation is different during each round. Then the complex tandem chaotic mapping was designed based on Cosine map, sine map and Logistic map to produce its initial conditions according to the pixels number of cipher for outputting the random sequence, and a quantization function was constructed to quantifies the sequence to obtain the key-streams. Finally, the block image is grouped, and the two encryption engine functions are designed combination with the key stream. By constructing the pixel encryption model, the first pixel, middle pixels and the last pixel of the image is diffused to finish the image encryption. The experimental results show that this proposed algorithm has higher security and user response with stronger anti-shear, anti-plaintext attack capability compared with the current chaotic encryption technology.
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On Image Encryption Algorithm Based on Gold Segmentation-Lucas Dynamic Scrambling and Different Diffusion

  • Received Date: 25/02/2017

Abstract: In order to solve the defect such as low dynamic and random degree resulting in low security caused by same pixel location scrambling process with each round, and the orderly diffusion operation, the image encryption algorithm based on gold segmentation-Lucas dynamic scrambling and different diffusion has been proposed in this paper. Firstly, the plaint pixel scrambling degree was effectively improved by introducing the gold segmentation-Lucas transform mechanism to dynamic transform the permutation changing kernel according to the iteration number so that the pixel scrambling operation is different during each round. Then the complex tandem chaotic mapping was designed based on Cosine map, sine map and Logistic map to produce its initial conditions according to the pixels number of cipher for outputting the random sequence, and a quantization function was constructed to quantifies the sequence to obtain the key-streams. Finally, the block image is grouped, and the two encryption engine functions are designed combination with the key stream. By constructing the pixel encryption model, the first pixel, middle pixels and the last pixel of the image is diffused to finish the image encryption. The experimental results show that this proposed algorithm has higher security and user response with stronger anti-shear, anti-plaintext attack capability compared with the current chaotic encryption technology.

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