中国物理B ›› 2013, Vol. 22 ›› Issue (5): 50503-050503.doi: 10.1088/1674-1056/22/5/050503

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Cryptanalysis and improvement of a digital image encryption method with chaotic map lattices

王兴元, 刘林涛   

  1. Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian 116024, China
  • 收稿日期:2012-10-30 修回日期:2012-11-23 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 Superior University Doctor Subject Special Scientific Research Foundation 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).

Cryptanalysis and improvement of a digital image encryption method with chaotic map lattices

Wang Xing-Yuan (王兴元), Liu Lin-Tao (刘林涛)   

  1. Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian 116024, China
  • Received:2012-10-30 Revised:2012-11-23 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 Superior University Doctor Subject Special Scientific Research Foundation 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： A digital image encryption scheme using chaotic map lattices has been proposed recently. In this paper, two fatal flaws of the cryptosystem are pointed out. According to these two drawbacks, cryptanalysts could recover the plaintext by applying chosen plaintext attack. Therefore, the proposed cryptosystem is not secure enough to be used in the image transmission system. Experimental results show the feasibility of the attack. As a result, we achieve some improvements to enhance the encryption scheme, which can completely resist our chosen plaintext attack.

关键词: cryptanalysis, chosen plaintext attack, image encryption, chaotic map lattice

Abstract: A digital image encryption scheme using chaotic map lattices has been proposed recently. In this paper, two fatal flaws of the cryptosystem are pointed out. According to these two drawbacks, cryptanalysts could recover the plaintext by applying chosen plaintext attack. Therefore, the proposed cryptosystem is not secure enough to be used in the image transmission system. Experimental results show the feasibility of the attack. As a result, we achieve some improvements to enhance the encryption scheme, which can completely resist our chosen plaintext attack.

Key words: cryptanalysis, chosen plaintext attack, image encryption, chaotic map lattice

中图分类号:  (Control of chaos, applications of chaos)

  • 05.45.Gg
05.45.Ra (Coupled map lattices) 42.30.Va (Image forming and processing) 05.45.Vx (Communication using chaos)