摘要： 提出了在一个多用户量子网络中，基于3个粒子最大纠缠态GHZ的密钥传输协议。这个量子密钥传输协议在通信节点和控制中心之间通过多个GHZ对构建安全的密码分配系统。与经典的量子密码术相比，理论分析证明，如果存在窃听者Eve，则他为获得有用的信息会不断向网络引入错误。该网络的节点和控制中心必然发现Eve，从而保证了网络密钥的安全性。

关键词: 量子网络, 量子密码术, 身份认证, GHZ

Abstract: The quantum secret sharing scheme can be implemented within realistic, highly secure multi-user communication network, using Greenberger Horne Zeilinger (GHZ) states. The quantum communication network marries a variety of GHZ states to well establish the secure key distribution system employed in conjunction with the nodes and control centers. Compared with the classical quantum cryptography, it is theoretically proved that an eavesdropper Eve invariably introduces errors within communication network if she wants to gain useful information. The nodes and control centers must find Eve to guarantee the security of the network.

Key words: Quantum communication network, Quantum secret sharing, Identification, GHZ