Cryptanalyzing a chaos-based image encryption algorithm using alternate structure

Cryptanalyzing a chaos-based image encryption algorithm using alternate structure
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使用替代结构对基于混沌的图像加密算法进行密码分析

DOI:
10.1016/j.jss.2012.04.002
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发表时间:
2011-12
影响因子:
3.5
通讯作者:
Chen, Guanrong
Chen, Guanrong
中科院分区:
计算机科学2区
文献类型:
--
作者:
Zhang, Leo Yu;Li, Chengqing;Wong, Kwok-Wo;Shu, Shi;Chen, Guanrong

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最近,提出了一种基于混沌的交替结构图像加密算法(IEAS)。本文将差分密码分析应用于IEAS,发现它的一些性质有利于差分攻击,只需选择少量的平面图像就可以恢复一个等价的密钥。详细的程序,密码分析IEAS与一个较低的轮数。理论分析和实验结果表明,IEAS对差分攻击的脆弱性。此外,还指出并验证了IEAS的其他一些安全缺陷,包括对平面图像变化不敏感和密钥空间不足。
Recently, a chaos-based image encryption algorithm with an alternate structure (IEAS) was proposed. This paper applies the differential cryptanalysis on the IEAS and finds that some of its properties favor the differential attack which can recover an equivalent secret key with only a few number of chosen plain-images. Detailed procedures for cryptanalyzing IEAS with a lower round number are presented. Both theoretical analysis and experimental results are provided to show the vulnerability of IEAS against differential attack. In addition, some other security defects of IEAS, including insensitivity with respect to changes of plain-images and insufficient size of the key space, are also pointed out and verified.
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影响因子: 5.1
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