| 引用本文: | 黎全,赵凯,邓正才,等.对一种混沌加密图像方法的破译研究.[J].国防科技大学学报,2007,29(3):45-49.[点击复制] |
| LI Quan,ZHAO Kai,DENG Zhengcai,et al.Research on Deciphering Method of a Kind of Chaotic Encrypting Picture[J].Journal of National University of Defense Technology,2007,29(3):45-49[点击复制] |
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| 对一种混沌加密图像方法的破译研究 |
| 黎全1, 赵凯2, 邓正才1, 何焰兰1, 吕治辉1, 黄水花1 |
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(1.国防科技大学 理学院，湖南 长沙 410073;2.西安交通大学 材料科学与工程学院，陕西 西安 710049)
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| 摘要: |
| 介绍了利用混沌映射系统进行保密通信的理论依据。分析了一种利用混沌动力学方程所形成的混沌序列来对图像进行加密的方案，并用程序语言予以实现。针对这种一维混沌加密算法，在加密方程、参数和初始值完全未知的前提下，运用相空间重构法和穷举法对其进行了破译研究并成功将其破译。总结了加密和破译方法的优缺点，提出了一种抗破译能力更强的加密方案。 |
| 关键词: 混沌 时间序列 破译 相空间重构 自相关函数 穷举法 |
| DOI： |
| 投稿日期：2007-01-20 |
| 基金项目:国家自然科学基金资助项目(10504043) |
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| Research on Deciphering Method of a Kind of Chaotic Encrypting Picture |
| LI Quan1, ZHAO Kai2, DENG Zhengcai1, HE Yanlan1, LV Zhihui1, HUANG Shuihua1 |
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(1.College of Science, National Univ. of Defense Technology, Changsha 410073, China;2.School of Material Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China)
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| Abstract: |
| The chaotic encryption system which makes use of chaos mapping system to carry on the secret correspondence is introduced. The method which makes use of the chaos dynamics equation to carry on encrypting to pictures is put forward and realized with the program. For the one-dimension chaotic encryption method, it is successfully deciphered by the phase-space reconstruction theory and exhaustive method with the encryption function, parameter and the original value completely unknown. In the end, the advantages and the disadvantages of the encrypting and deciphering methods are discussed and a kind of encrypting project which is more difficult to be deciphered is put forward. |
| Keywords: chaos time series decipher phase-space reconstruction autocorrelation function exhaustive method |
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