摘要
提出一种整合了Henon映射与无限折叠混沌映射的复合混沌系统,并应用该系统生成的混沌序列进行数字图像的加密。算法以He-non映射的初值为加密系统的密钥。首先,固定无限折叠混沌映射的一个控制参数,输入密钥,迭代Henon映射,并将所生成的混沌序列的均值作为无限折叠混沌映射的另一个控制参数,然后,迭代无限折叠混沌映射以产生所需的混沌序列,最后,应用该混沌序列构建出置乱矩阵和变换矩阵,对图像进行加密。实验结果表明,该算法具有较好的加密效果和较高的安全性。
A new image encryption algorithm based on the composite chaotic system is proposed. Two discrete chaotic systems are combined to construct the system. Firstly, iterate the Henon map by the secret key to generate a chaotic sequence. Secondly, fix one parameter of the chaotic map with infinite collapse and use the mean value of the sequence as the other parameter to create a temporary sequence. Thirdly, transform the temporary sequence into binary. Finally, use the binary sequence to build the transfer matrix and the confusion matrix to encrypt the image. Simulation results and security analysis have shown that the proposed scheme has good encryption effect and high security.
出处
《仪器仪表用户》
2008年第6期82-84,共3页
Instrumentation
基金
国家自然科学基金(No.60372061)
吉林省科技发展计划项目((2004)科技字(1271)号)
