%0 Journal Article
%T Construction of optical Hash function based on nonlinear cascaded Fourier transform<br>基于非线性级联傅里叶变换的光学Hash函数构造
%A He Wen-Qi
%A Peng Xiang
%A Qi Yong-Kun
%A Meng Xiang-Feng
%A Qin Wan
%A Bruce Z Gao
%A <br>何文奇
%A 彭翔
%A 祁永坤
%A 孟祥锋
%A 秦琬
%A 高志
%J 物理学报
%D 2010
%I 
%X A method of constructing optical Hash function based on nonlinear cascaded Fourier transform is proposed. The proposed method consists of two single one-way encryption processes. In the first process, the digital information is divided to several data blocks with 512-bit each. The data blocks are encoded to 8 by 8 sub-images with 256 gray scales, creating information planes. Then take a nonlinear cascaded Fourier transform of sub-image to generate a data matrix through an optical/digital hybrid system. By e...
%K information optics
%K optical Hash function
%K nonlinear cascaded Fourier transform
%K avalanche effect<br>信息光学
%K 光学Hash函数
%K 非线性级联傅里叶变换
%K 雪崩效应
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=6B0E7E2C264FB60B1EC0D0715B1FE180&yid=140ECF96957D60B2&vid=6AC2A205FBB0EF23&iid=38B194292C032A66&sid=ED018FBF5E47A8BD&eid=21F25170F2D0AB40&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=19