| 改进的数字化混沌扰动实现和应用 |
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| 引用本文： | 程艳云,樊春霞. 改进的数字化混沌扰动实现和应用[J]. 计算机工程与应用, 2009, 45(33): 240-244. DOI: 10.3778/j.issn.1002-8331.2009.33.074 |
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| 作者姓名： | 程艳云 樊春霞 |
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| 作者单位： | 南京邮电大学 自动化学院，南京 210003 |
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| 基金项目： | 江苏省高校自然科学基础研究项目 |
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| 摘 要： | 针对数字化混沌序列的有限精度效应问题，利用参数扰动产生混沌序列。该混沌序列服从均匀分布，具有更为理想的扩散特性和置乱特性，数值分析结果表明该方案的可行性。利用参数扰动产生的有限精度混沌序列产生加密矩阵和置乱矩阵，对灰度图像进行加密。实验仿真结果表明，该加密算法具有良好的加密效果。
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| 关 键 词： | 参数扰动 帐篷映射 有限精度效应 数字化混沌 图像加密 |
| 收稿时间： | 2009-06-15 |
| 修稿时间： | 2009-7-28 |
Realizing and application of perturbing digital chaotic systems |
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| CHENG Yan-yun,FAN Chun-xia. Realizing and application of perturbing digital chaotic systems[J]. Computer Engineering and Applications, 2009, 45(33): 240-244. DOI: 10.3778/j.issn.1002-8331.2009.33.074 |
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| Authors: | CHENG Yan-yun FAN Chun-xia |
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| Affiliation: | College of Automation，Nanjing University of Posts and Telecommunications，Nanjing 210003，China |
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| Abstract: | This paper presents an approach to realize finite precision chaotic systems via perturbation of chaotic-sequences.After being perturbed,chaotic system can generate chaotic binary sequences with uniform distribution and statistic properties invulnera-ble to cryptographic analysis.The simulation result shows that the perturbing scheme is effective. Encryption matrixes and re-placement matrixes are being generated by using the chaotic mapping via parameter perturbation,and then the gray-scale image is encrypted.Experimental simulation shows that the encryption algorithm has a good effect of encryption. |
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| Keywords: | parameter perturbation tent map finite precision effect digital chaotic systems image encryption |
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