期刊
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION
卷 16, 期 2, 页码 837-843出版社
ELSEVIER
DOI: 10.1016/j.cnsns.2010.05.008
关键词
Cryptanalysis; Known-plaintext attack; Chosen-plaintext attack; Encryption; Image; Chaos
类别
资金
- Hong Kong Polytechnic University [G-YX2L]
- Zukunftskolleg of the Universitat Konstanz, Germany
- DFG (German Research Foundation)
Recently, an image encryption scheme based on chaotic standard and logistic maps was proposed by Patidar et al. It was later reported by Rhouma et al. that an equivalent secret key can be reconstructed with only one known/chosen-plaintext and the corresponding ciphertext. Patidar et al. soon modified the original scheme and claimed that the modified scheme is secure against Rhouma et al.'s attack. In this paper, we point out that the modified scheme is still insecure against the same known/chosen-plaintext attack. In addition, some other security defects existing in both the original and the modified schemes are also reported. (C) 2010 Elsevier B.V. All rights reserved.
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