%0 Journal Article
%T A theoretical scheme for multi-user quantum authentication and key distribution in a network<br>一种网络多用户量子认证和密钥分配理论方案
%A Yang Yu-Guang
%A Wen Qiao-Yan
%A Zhu Fu-Chen
%A <br>杨宇光
%A 温巧燕
%A 朱甫臣
%J 物理学报
%D 2005
%I 
%X A theoretical scheme for multi-user quantum authentication and key distribution in a network is proposed. Similar to the authentication architecture of the netw ork in classical cryptography, a distributed client/server architecture with the shared Einstein-Podolsky-Rosen(EPR) entangled pairs between each user and his t rusted server used for the authentication and key distribution is proposed. Base d on this architecture, any-to-any multi-user quantum authentication and key dis tribution is realized. The trusted server only provides the authentication betwe en users and swaps the entanglement between the particles so as to entangle the particles of the two users who want to communicate secretly. The key generation is performed by the requesting user. Each user in a network only shares Einstein -Podolsky-Rosen entangled pairs with the trusted server and communicates with th e trusted server through the classical channel and quantum channel. Users need n ot share EPR entangled pairs with each other so that the number of EPR pairs in the network is reduced from O(n2) to O(n).
%K quantum authentication
%K quantum key distribution
%K client/server
%K entanglement swapping<br>量子认证
%K 量子密钥分配
%K 客户机/服务器
%K 纠缠交换
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=1AC424945296607D&yid=2DD7160C83D0ACED&vid=318E4CC20AED4940&iid=9CF7A0430CBB2DFD&sid=BCB476679F5FDD3C&eid=5FAD91E30C3BD635&journal_id=1000-3290&journal_name=物理学报&referenced_num=3&reference_num=30