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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2008, Vol. 9 Issue (8): 1118-1123    DOI: 10.1631/jzus.A0720102
Electrical & Electronic Engineering     
Cryptanalysis of an image encryption scheme based on the Hill cipher
Cheng-qing LI, Dan ZHANG, Guan-rong CHEN
Department of Electronic Engineering, City University of Hong Kong, Kowloon Tong, Hong Kong, China; School of Computer Science and Technology, Zhejiang University, Hangzhou 310027, China
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Abstract  This paper studies the security of an image encryption scheme based on the Hill cipher (Ismail et al., 2006) and reports its following problems: (1) There is a simple necessary and sufficient condition that makes a number of secret keys invalid; (2) It is insensitive to the change of the secret key; (3) It is insensitive to the change of the plain-image; (4) It can be broken with only one known/chosen plaintext; (5) It has some other minor defects. The proposed cryptanalysis discourages any use of the scheme in practice.

Key words： Cryptanalysis      Encryption      Hill cipher      Known-plaintext attack      Chosen-plaintext attack     
Received: 19 December 2007     
CLC:  TP309  
  TN918  
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Cite this article:

Cheng-qing LI, Dan ZHANG, Guan-rong CHEN. Cryptanalysis of an image encryption scheme based on the Hill cipher. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2008, 9(8): 1118-1123.

URL:

http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A0720102     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2008/V9/I8/1118

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