吉首大学学报：自然科学版Issue(5)：41-42,2.
图像特征提取方法的综述
Cyclic Matrix with Optimal Diffusion
摘要
Abstract
The diffusion performance of diffusion layer affects the anti-attack ability of all the cipher structure,and the linear branch number is an important indicator to measure the diffusion performance; the bigger the branch number is, the stronger the ability to resist differential and linear cryptanalysis. The optimal diffusion layer composed by cyclic matrix can recycle the existing resources, so the implementation performance is more superior. As the necessary and sufficient condition of branch number to achieve maximum is that each sub-determinant is not zero, the paper constructs an algorithm based on this condition which can generate cyclic matirx with optimal diffusion and verify whether a matrix meets the optimal diffusion. A lot of eight order cyclic matrixes with optimal diffusion are obtained for the first time. A construction method of a class of four order cyclic matrix with the optimal diffusion is presented,and an error in reference is also Corrected. The experiment results show that the number of the cyclic matrix with optimal diffusion is distributed evenly.关键词
特征提取/颜色直方图/GLCM/Hough变换Key words
diffusion layer/branch number/cyclic matrix/optimal diffusion分类
信息技术与安全科学引用本文复制引用
王志瑞,闫彩良..图像特征提取方法的综述[J].吉首大学学报：自然科学版,2011,(5):41-42,2.基金项目
陕西省教育厅专项基金资助项目 （）
