中国物理B ›› 2013, Vol. 22 ›› Issue (5): 50508-050508.doi: 10.1088/1674-1056/22/5/050508

• GENERAL • 上一篇    下一篇

A novel image block cryptosystem based on spatiotemporal chaotic system and chaotic neural network

王兴元, 鲍雪梅   

  1. Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian 116024, China
  • 收稿日期:2012-06-28 修回日期:2012-11-15 出版日期:2013-04-01 发布日期:2013-04-01
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61173183, 60973152, and 60573172), the Doctoral Program Foundation of Institution of Higher Education of China (Grant No. 20070141014), the Program for Excellent Talents in Universities of Liaoning Province, China (Grant No. LR2012003), the Natural Science Foundation of Liaoning Province, China (Grant No. 20082165), and the Fundamental Research Funds for the Central Universities of China (Grant No. DUT12JB06).

A novel image block cryptosystem based on spatiotemporal chaotic system and chaotic neural network

Wang Xing-Yuan (王兴元), Bao Xue-Mei (鲍雪梅)   

  1. Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian 116024, China
  • Received:2012-06-28 Revised:2012-11-15 Online:2013-04-01 Published:2013-04-01
  • Contact: Wang Xing-Yuan E-mail:wangxy@dlut.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61173183, 60973152, and 60573172), the Doctoral Program Foundation of Institution of Higher Education of China (Grant No. 20070141014), the Program for Excellent Talents in Universities of Liaoning Province, China (Grant No. LR2012003), the Natural Science Foundation of Liaoning Province, China (Grant No. 20082165), and the Fundamental Research Funds for the Central Universities of China (Grant No. DUT12JB06).

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摘要： In this paper, we propose a novel block cryptographic scheme based on spatiotemporal chaotic system and chaotic neural network (CNN). The employed CNN comprises a 4-neuron layer called chaotic neuron layer (CNL), where spatiotemporal chaotic system participates in generating its weight matrix and other parameters. The spatiotemporal chaotic system used in our scheme is the typical coupled map lattice (CML), which can be easily implemented in parallel by hardware. A 160-bit-long binary sequence is used to generate the initial conditions of the CML. The decryption process is symmetric relative to the encryption process. Theoretical analysis and experimental results prove that the block cryptosystem is secure and practical, and suitable for image encryption.

关键词: image encryption, block cryptosystem, chaotic neural network, coupled map lattice

Abstract: In this paper, we propose a novel block cryptographic scheme based on spatiotemporal chaotic system and chaotic neural network (CNN). The employed CNN comprises a 4-neuron layer called chaotic neuron layer (CNL), where spatiotemporal chaotic system participates in generating its weight matrix and other parameters. The spatiotemporal chaotic system used in our scheme is the typical coupled map lattice (CML), which can be easily implemented in parallel by hardware. A 160-bit-long binary sequence is used to generate the initial conditions of the CML. The decryption process is symmetric relative to the encryption process. Theoretical analysis and experimental results prove that the block cryptosystem is secure and practical, and suitable for image encryption.

Key words: image encryption, block cryptosystem, chaotic neural network, coupled map lattice

中图分类号:  (Communication using chaos)

  • 05.45.Vx
05.45.Ra (Coupled map lattices)