摘要
给出了一个基于多维连续混沌系统和Hash函数的图像加密算法。该算法利用抽取后的混沌信号及两个Hash函数得到图像加密的行列变换序列和置乱矩阵。理论分析和模拟实验结果表明,该方案密钥空间大,加密图像对密钥敏感,加密效果良好,并且可以实现类似于"一次一密"的加密目标,算法安全性较高。
This paper presents a new image encryption algorithm based on continuous chaotic system and Hash function. The new algorithm implements the image encryption by using confusion matrix and transformation sequences, generated by sampling chaotic signals and Hash functions. The cipher-image is sensitive to initial conditions of chaotic system. Theoretical analysis and experimental results demonstrate that the algorithm is of favorable and has the function similar to one-time pad scheme.Image encryption algorithm based on continuous chaotic system and Hash function was presented. The new algorithm implemented the image encryption by using confusion matrix and transformation sequences, generated by sampling chaotic signals and Hash functions. The cipher-image was sensitive to initial conditions of chaotic system. Theoretical analysis and experimental results demonstrated that the algorithm was favorable and had the function similar to one-time pad scheme.
出处
《计算机应用》
CSCD
北大核心
2004年第12期61-63,共3页
journal of Computer Applications
基金
国家自然科学基金 (6 0 0 740 3 4)
高等学校博士学科点专项科研基金 (2 0 0 2 0 0 0 80 0 4)
关键词
连续混沌系统
图像加密
HASH函数
置乱矩阵
continuous chaotic system
image encryption
Hash function
confusion matrix
