摘要
图像相对于文本等信息含有更大的信息量,传统的加密方法,如DES、RSA等具有结构复杂、密钥单一、加密速度慢等缺点,使得它很难满足图像这样大数据量的加密要求,本文将Arnold cat映射和四维混沌映射相结合,提出了一种具有更大的随机性和更大的密钥量的图像加密算法。应用Matlab进行仿真实验,结果表明该算法具有算法实现容易、加密速度快、密钥量大、对初始值敏感等优点。
Image contains more information than text and other information media, traditional encryption methods, such as DES, RSA have a complex structure,a single key encryption and slow encryption speed which making it difficult to meet such a large amount of image data encryption requirements. In this paper, a more random and secret key encryption algorithm was proposed based on the Arnold cat mapping and four-dimensional chaotic mapping combination. Simulations of of MATLAB were implemented and results showed that the algorithm has the characteristics of easy realization, fast enc：ryption speed, large amount of keys, sensitive initial value,etc.
出处
《现代科学仪器》
2014年第5期147-150,共4页
Modern Scientific Instruments
