Journal
CHINESE PHYSICS B
Volume 22, Issue 5, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1674-1056/22/5/050503
Keywords
cryptanalysis; chosen plaintext attack; image encryption; chaotic map lattice
Categories
Funding
- National Natural Science Foundation of China [61173183, 60973152, 60573172]
- Doctoral Program Foundation of Institution of Higher Education of China [20070141014]
- Program for Excellent Talents in Universities of Liaoning Province, China [LR2012003]
- Natural Science Foundation of Liaoning Province, China [20082165]
- Fundamental Research Funds for the Central Universities of China [DUT12JB06]
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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 the 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 make some improvements to the encryption scheme, which can completely resist our chosen plaintext attack.
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