| 王丽燕,李永华,贾思齐,刚家泰.一种基于复合混沌动力系统的序列密码算法[J].,2012,(5):730-735 |
| 一种基于复合混沌动力系统的序列密码算法 |
| A stream cipher algorithm based on composite chaotic dynamical systems |
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| DOI：10.7511/dllgxb201205018 |
| 中文关键词: Logistic混沌映射 分段线性混沌映射 复合混沌动力系统 序列密码 |
| 英文关键词: Logistic chaotic map piecewise linear chaotic map composite chaotic dynamical system stream cipher |
| 基金项目:国家自然科学基金资助项目(71072161) |
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| 中文摘要: |
| 基于二维Logistic映射和分段线性混沌映射,提出了一种新的序列密码算法．该算法用二维Logistic映射的输出作为分段线性映射的分段参数 P ．再用带有参数 P 的分段线性混沌映射构造加密算法．对算法进行了仿真实验和安全性分析,并对由二维Logistic映射和分段线性混沌映射产生的序列的随机性、初值敏感性等性质进行了研究．安全性分析表明,该算法加密效果良好,密钥、明文与密文之间关系均十分敏感,而且密文和明文的相关度也很小,可以有效地抵御统计分析,防止密文对密钥和明文信息的泄露． |
| 英文摘要: |
| A new stream cipher algorithm is designed based on 2-D Logistic map and piecewise linear chaotic map, which uses the output of 2-D Logistic map as the piecewise parameter P of piecewise linear chaotic map. The encryption algorithm is constructed by piecewise linear chaotic map with P . The simulation experiments and security analyses are conducted for this algorithm, and the random properties and the sensitivity to initial value of stream generated by these two maps are studied. The analytical results of security indicate that this algorithm is effective in encryption, the key, plaintext and cipher text form complex and sensitive nonlinear relations, and the correlation between plaintext and cipher text is very small, which makes the algorithm effectively defend statistic analysis. The leaking of key and plaintext information from cipher text can also be effectively prevented. |
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