Journal
NONLINEAR DYNAMICS
Volume 73, Issue 1-2, Pages 795-800Publisher
SPRINGER
DOI: 10.1007/s11071-013-0832-9
Keywords
Cryptanalysis; Sub-image encryption; Parallel encryption; High-dimensional chaos
Categories
Funding
- National Natural Science Foundation of China [61173183, 60973152, 60573172]
- Superior University Doctor Subject Special Scientific Research Foundation of China [20070141014]
- Program for Liaoning Excellent Talents in University [LR2012003]
- National Natural Science Foundation of Liaoning province [20082165]
- Fundamental Research Funds for the Central Universities [DUT12JB06]
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Recently, a parallel sub-image encryption method with high-dimensional chaos has been proposed. But there is a fatal flaw in the cryptosystem that the generated keystream remains unchanged when encrypting every image. Based on this point, we could recover the plaintext by applying chosen plaintext attack. Therefore the proposed cryptosystem is not supposed to be used in image transmission system. Experimental results show the feasibility of our attack.
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