摘要
由于多媒体题信息的数据量巨大,且冗余度高,使用经典的加密方法对多媒体信息加密已经不能满足当前的数据安全需求。混沌的出现,使得对多媒体信息的加密有了突破式的进展,混沌序列的诸多优点,使它非常适合用于图像加密。本文先分析了基于三维统一混沌系统的彩色图像加密算法的不足之处,针对不足,又使用二维猫映射对该算法进行了改进,改进后的彩色图像加密算法具有更高的安全性。
Because of multimedia information has huge amount of data and high redundancy,traditional encryption technology is not suitable for multimedia information encryption. Multimedia information encryption have leap type development when chaos occurs. Chaos is very suitable for image encryption because it has many advantages.In this paper, I analysised the shortcomings of color image encryption algorithm based on three dimensional unified chaotic system at first. Aiming at the algorithm deficiency,I Im-proved the algorithm with cat map,the encryption algorithm with the result in higher security.
出处
《自动化与仪器仪表》
2014年第2期118-119,122,共3页
Automation & Instrumentation
关键词
加密算法
猫映射
三维统一混沌系统
Encryption algorithm
Cat map
3D unified chaotic system
