计算机技术与发展2012，Vol.22Issue(5)：123-126,4.
一种基于块置乱和反馈密钥的图像加密算法
An Image Encryption Algorithm Based on Image Block and Key Feedback Mechanism
摘要
Abstract
In analyzing the disadvantages of traditional and iterative image scrambling methods and static image gray value exchange methods, a new algorithm is proposed based on uniform and key feedback mechanism. The key idea of the algorithm is based on uniform block scrambling, and according to different attributes of each pixel dynamically select the different chaotic sequence for gray value encryption based on key feedback mechanism. Matlab simulation results show that the algorithm scrambling algorithm has obvious advantage in terms of relevant adjacent pixels;Feedback mechanisms and dynamic chaotic system makes the gray-scale value has a large key space, excellent resistance to express,ciphertext attack;The time complexity of encryption algorithm is reasonable and the security is high.关键词
图像块置乱/Loistic映射/标准混沌映射/密钥反馈Key words
image block scrambling/Logistic mapping/standard chaos mapping/key feedback分类
信息技术与安全科学引用本文复制引用
林冰,蒋国平..一种基于块置乱和反馈密钥的图像加密算法[J].计算机技术与发展,2012,22(5):123-126,4.基金项目
国家自然科学基金(60874091) （60874091）
江苏省'六大人才高峰'高层次人才计划(SJ209006) （SJ209006）
高等学校博士点基金项目(20103223110003) （20103223110003）
