The keyed optical Hash function based on cascaded phase-truncated Fourier transforms

被引：24

作者：

He, Wenqi ^{[1
]}

Peng, Xiang ^{[1
]}

Qin, Wan ^{[1
]}

Meng, Xiangfeng ^{[1
]}

机构：

[1] Shenzhen Univ, Coll Optoelect Engn, Key Lab Optoelect Devices & Syst, Educ Minist China, Shenzhen 518060, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2010年 / 283卷 / 11期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Fourier optics; Optical system design; Hybrid systems; Image processing; CRYPTOGRAPHY;

D O I：

10.1016/j.optcom.2009.11.060

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An approach for constructing keyed optical Hash function (KOHF) is proposed, which is based on cascaded phase-truncated Fourier transforms (CPTFTs). The KOHF is created from a two-step one-way encryption process with a secret key imbedded. The non-linearity and one-way functionality is introduced by cascaded optical Fourier transforms with the phase-truncation operations, which could be implemented either digitally or optically. Once two 64-bit keyed Hash values are obtained in the two-step one-way encryption processes, respectively, they are then combined to form a final 128-bit keyed Hash value, which can also be regarded as a message authentication code (MAC). Moreover, the avalanche effect is also evaluated to show the performance of constructed KOHF with a set of numerical experiments. (C) 2009 Published by Elsevier B.V.

引用

页码：2328 / 2332

页数：5

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