摘要
鉴于低维混沌加密存在密钥空间相对较小的局限性,基于三维蔡氏电路混沌系统的图像空域置乱加密方法可避免该局限性。利用产生的混沌序列,经过预处理生成置乱索引矩阵用于图像加密。该方案密钥敏感性高,可实现多幅图像的并行加密,是一种具有较高的安全性,加密效率高,且易于实现的图像加密算法。
In view of the fact that the low dimension chaos encryption technology respectively has its limitation, a new image encryption algorithm based-on the Chua＇s circuit system is discussed. The real number value chaotic sequences is generated by using the key value and disperse them into scramble transformation matrix. This image encryption algorithm have high sensitive dependence on the initial condition. The algorithm provides good security, and have high encryption efficiency. Experimental results are satisfactory.
出处
《计算机工程与设计》
CSCD
北大核心
2007年第14期3328-3330,共3页
Computer Engineering and Design
基金
国家自然科学基金项目(60271019)
重庆自然科学基金项目(20020611007)
关键词
混沌系统
混沌序列
图像加密
蔡氏电路
置乱
chaos system
chaos sequences
image encryption
Chua＇s circuit
scramble
