星地量子密钥分发中的数据协调方法  

Data Reconciliation Method in Satellite Quantum Key Distribution

作　　者：钟先锋[1] 汤煜[1] 金标[1] 吴腾[1] 李凤芝[1] 刘尉悦[1] 

机构地区：[1]宁波大学信息科学与工程学院,浙江宁波315211

出　　处：《计算机工程》2017年第4期122-125,共4页Computer Engineering

基　　金：浙江省自然科学基金(LY13F050007;LY17F050004)

摘　　要：量子密钥分发是基于量子物理基本定律来确保通信双方的安全性。低交互次数的数据协调是星地量子密钥分发数据后处理阶段的关键,依据星地量子密钥分发中数据协调的特性和要求,提出一种基于Turbo码的星地量子密钥分发数据协调模型。该模型重新修改和设计Turbo码的编解码模型及其译码算法,可解决星地量子密钥分发的数据协调过程需多次信息交互的问题。仿真结果表明,经过一定的迭代次数后,Turbo码可完成不同误码率下密钥的数据协调。Quantum key distribution applies fundamental laws of quantum physics to guarantee secure communication. Few number of information exchanges is the key of satellite-based quantum key distribution. According to the characteristics and requirements of data reconciliation in satellite quantum key distribution,this paper presents a kind of new data reconciliation model of satellite-based quantum key distribution based on the Turbo codes. The coding and decoding models of Turbo codes are modified and designed, and this model solves the numbers of information exchanges. Simulation result shows that through a number of iterations, Turbo codes can complete the reconciliation of the key in different bit error rate.

关 键 词：量子保密通信 星地量子密钥分发 数据协调 TURBO码 模型仿真 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]