摘要
在密码学理论的基础上,对混沌加密技术进行了深入的研究。提出一种多级混沌图像加密算法,根据数字图像数据的特点,利用不同的混沌模型分别生成置换矩阵和替换矩阵,对图像进行置乱和像素值替换,最终实现图像加密。
Based on the cryptology theory,we carry out an in-depth research on the chaotic encryption technology.a digital image encryption algorithm based on multistage chaotic is proposed.According to the characters of digital image,different chaotic models are used to generate diffusion and confusion matrixes.And then,digital image is encrypted with these matrixes.
作者
鲁菁
姜丽
LU Jing1,2,JIANG Li3(1.School of Computer Science and Technology,Nanjing University of Science and Technology,Nanjing 210094,China;2.Lianyungang Teacher’s College,Lianyungang 222006,China;3.The Department of Computer Science and Information Engineering,Shanghai Institute of Technology,Shanghai 200235,China)
出处
《电脑知识与技术》
2009年第12X期10238-10239,10247,共3页
Computer Knowledge and Technology
关键词
信息安全
密码学
混沌加密
数字图像
多混沌系统
information security
cryptology
chaotic encryption
digital image
multi-chaos
