Study on scrambling capability based on image encryption
Zhan Xin-sheng · Jisuanji gongcheng yu sheji · 2006
To use schemes of image encryption safely and to improve the technology of image encryption,it is very necessary to compare and analyze the algorithm of image encryption.In this thesis,some parameters such as the percentage of unchanged point,the information entropy,and the average of pixel grey-scale values change,the r-m self-correlation of image and comparability of image are given to evaluate the image scrambling.At last using the parameters,the algorithm of image encryption is tested and the safety of the algorithm is evaluated.