量子密钥分配安全性探讨

Exploration on the Security of Quantum Key Distribution

BB84协议作为第一个量子密钥分配协议,是目前量子通信中最基本也是应用最广的协议之一。本文首先简要回顾了BB84协议,之后重点讨论了该协议在工程实现中存在的安全问题,其中部分安全问题已经得到了较好解决并在工程实现中加以应用,但仍有部分安全问题需要进一步深入研究,本文最后针对可信中继、组网等问题给出了安全解决方案。

As the first quantum key distribution protocol,BB84 protocol is one of the most basic and widely used protocol in the quantum communication.In this paper,the BB84 protocol is briefly reviewed first,and then discussions are focused on the security problems existing in the engineering implementation of the protocol.Some of the security problems have already been well solved and applied to the engineering,and some still require further in-depth study.Finally,security solutions to the problems of the trusted relay and networking are presented.