| 对一种混沌图像密码的选择明文攻击 |
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| 引用本文： | 刘婷,闵乐泉.对一种混沌图像密码的选择明文攻击[J].武汉大学学报(信息科学版),2010(5). |
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| 作者姓名： | 刘婷 闵乐泉 |
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| 作者单位： | 北京科技大学信息工程学院;北京科技大学应用科学学院; |
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| 基金项目： | 国家自然科学基金资助项目(60674059,60773120) |
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| 摘 要： | 对基于广义猫映射和加法模运算的混沌密码进行了安全性分析,指出了该密码设计上的几处瑕疵。在选择明文攻击下,该密码系统在1轮加密时不够安全,仅选择3幅明文图像就可破译。讨论了该密码在多轮加密时待解决的问题以及可能采取的改进措施。
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| 关 键 词： | 混沌图像密码 密码分析 Kerckhoffs准则 选择明文攻击 |
Chosen-plaintext Attack on a Chaotic Image Cipher |
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| LIU Ting MIN Lequan.Chosen-plaintext Attack on a Chaotic Image Cipher[J].Geomatics and Information Science of Wuhan University,2010(5). |
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| Authors: | LIU Ting MIN Lequan |
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| Institution: | LIU Ting1 MIN Lequan1,2(1 School of Information Engineering,University of Science , Technology Beijing,30 Xueyuan Road,Haidian District,Beijing 100083,China)(2 School of Applied Science,China) |
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| Abstract: | The security of the chaotic cryptosystem based on general cat map and additive modular arithmetic is studied.Several weaknesses of the cipher are pointed out.By choosing three plaintexts,the one-round cryptosystem can be broken.The problems to be solved in the cryptosystem and possible improved methods are discussed. |
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| Keywords: | chaotic image cipher cryptanalysis Kerckhoffs principle chosen-plaintext attack |
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