基于一类二维混沌映射的数字图像置乱方法

DIGITAL IMAGE DISORDER BASE ON A TWO-DEMENSIONS CHAOS MAP

利用混沌系统中的二维Sinai映射,将两组初始参数不同的混沌映射产生两队不同的伪随机的混沌时间序列,并利用混沌映射伪随机性非常好的特点,针对数字图像的特点进行随机空间置乱操作,并对保密性及算法的复杂性进行分析,程序用VC++6.0编写完成。

The paper utilize two-dimensions Sinai map of chaos system,Two group different original parameter's chaos map produce two group different pseudostochastic chaos time sequence.Because chaos map's specialty is first-rate randomicity, we use it in digital image disorder experiments of random space, and analyse its security and complexity of arithmetic.This program is compiled by VC^(++)6.0.