标题：Research on Optical One-way Cryptosystem
作者：He, Wenqi; Peng, Xiang; Meng, Xiangfeng
作者机构：[He, Wenqi; Peng, Xiang] Shenzhen Univ, Educ Minist China, Key Lab Optoelect Devices & Syst, Coll Optoelect Engn, Shenzhen 518060, Peoples R China.; 更多
会议名称：Conference on Information Optics and Optical Data Storage
会议日期：OCT 18-19, 2010
来源：INFORMATION OPTICS AND OPTICAL DATA STORAGE
关键词：Fourier optics; optical one-way cryptosystem; cascaded phase-truncated; Fourier transforms; optical Hash function; keyed optical Hash function
摘要：In this paper, we introduced a concept of cascaded phase-truncated Fourier transforms (CPTFTs), which is a nonlinear iterative operator. Meanwhile, an optical/digital hybrid system was presented to implement the operator of CPTFTs. Thereafter, by adopting CPTFTs as main processing unit, we have done some research on optical one-way cryptosystem: an optical Hash function (O-Hash) and a keyed optical Hash function (K-O-Hash) were put forward respectively, which can be applied to message integrity check and authentication. Both of the O-Hash and K-O-Hash can transform an arbitrary-length pre-encoded message (without or with a secret key) into a fixed-length output by means of taking a two-step one-way encryption process. Finally, a set of numerical experiments were carried out to evaluate the performance of avalanche effect and collision resistance of the O-Hash and K-O-Hash constructed with our approach.