可认证的三方量子密钥协商协议

Three-Party Quantum Key Agreement Protocol with Authentication

本文利用纠缠交换的特性,提出一个具有认证功能的三方量子密钥协商协议。协议以Bell纠缠态为信号载体,通过一个半可信的第三方将这些粒子传输给三个参与者,并结合纠缠交换技术实现三个参与者共享Greenberger-Horne-Zeilinger态的目的。同时,利用该量子态测量的相关性,使协议的安全性得到保证。此外,协议基于经典hash函数,实现对参与者的身份认证功能。

Utilizing the advantage of quantum entanglement swapping,a three-party quantum key agreement protocol with authentication is proposed.In this protocol,the Bell entangled states are used as signal carriers and transmitted to three participants by a semi-honest third party(called TP).And the participants can share a Greenberger-Horne-Zeilinger state by entanglement swapping.Meantime,the correlations of GHZ measurements help ensure the security of the protocol.Besides,based on the classic hash function,this protocol can achieve the identity authentication of participants.