| 一种基于指数性混沌序列的灰度图像加密算法 |
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| 引用本文： | 李昌刚,韩正之,张浩然.一种基于指数性混沌序列的灰度图像加密算法[J].计算机工程与应用,2002,38(8):16-17,25. |
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| 作者姓名： | 李昌刚 韩正之 张浩然 |
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| 作者单位： | 上海交通大学自动化系,上海,200030,E-mail:allan000@263.net |
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| 基金项目： | 国家自然科学基金资助项目(编号:69874025) |
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| 摘 要： | 文章基于指数性混沌序列来产生两个密钥序列,然后分别把它们映射到区间(但不改变混沌特性),进而应用这两个密钥序列所组成的矩阵作为加密模板设计加密算法,并把加密算法应用于灰度图像数据加密。分析表明,该文所设计的加密算法不但能抵抗唯密文攻击,而且能有效地抵抗选择明文攻击。仿真结果表明,该算法具有良好的密码学特性。
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| 关 键 词： | 混沌序列 图像加密 加密模板 |
| 文章编号： | 1002-8331-(2002)08-0016-02 |
A Gray Scale Image Encryption Algorithm Based on an Exponential Chaotic Sequence |
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| Li,Changgang Han Zhengzhi,Zhang Haoran.A Gray Scale Image Encryption Algorithm Based on an Exponential Chaotic Sequence[J].Computer Engineering and Applications,2002,38(8):16-17,25. |
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| Authors: | Li Changgang Han Zhengzhi Zhang Haoran |
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| Abstract: | In this paper,two secret-key sequences are generated based on an exponential chaotic sequence respectively.Via a mapping(but do not change the chaotic attribute),they are mapped into interval and two encryption templates are composed.Then using the encryption templates,an encryption algorithm is presented and used to encrypt a gray scale image.The analysis indicates that the encryption algorithm not only can effectively resist cipher-text-only attack but also chosen-plaintext attack.The simulation results imply that the algorithm can meet the requests in cryptography. |
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| Keywords: | chaotic sequence image encryption encryption template |
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