一种基于星型簇态的动态量子群组认证协议  

Dynamic quantum-group authentication protocol based on starlike cluster states

作　　者：高冬梅 杨宇光 GAO DongMei;YANG YuGuang(School of Mathematic and Information Science,Shandong Technology and Business University,Yantai 264005,China;Faculty of Information Technology,Beijing University of Technology,Beijing 100124,China;Beijing Key Laboratory of Trusted Computing,Beijing 100124,China)

机构地区：[1]山东工商学院数学与信息科学学院,烟台264005 [2]北京工业大学信息学部,北京100124 [3]北京市可信计算重点实验室,北京100124

出　　处：《中国科学：物理学、力学、天文学》2022年第11期66-73,共8页Scientia Sinica Physica,Mechanica & Astronomica

基　　金：国家自然科学基金(编号:62071015)资助项目。

摘　　要：与传统一对一的身份认证不同,群组认证面向群组,可对属于同一群组的所有用户进行身份认证.本文提出了一种动态量子群组认证协议.借助于一种特殊的纠缠态,即星型簇态,群组内的量子身份认证中心可对属于同一群组的所有用户进行身份认证.此外,该协议还具有如下特点:(1)参与群组认证的用户数可动态变化,即允许新用户加入群组认证和老用户退出群组认证;(2)新用户加入群组认证或老用户退出群组认证时,所有老用户的认证密钥不必重新分发.与现有量子群组认证协议相比,所提出的协议更灵活、更适于实际场景.Unlike the traditional one-to-one identity authentication, group identity authentication is group oriented and can authenticate all users belonging to the same group. In this paper, we propose a dynamic quantum-group authentication protocol. Using a special entangled state, i.e., the starlike cluster state, the quantum identity authentication center in a group can authenticate all users belonging to the same group. In addition, the protocol has the following characteristics.(1) The number of users participating in group authentication can change dynamically, i.e., new users are allowed to join group authentication, and the old users are allowed to exit group authentication.(2) When new users join or old users exit group authentication, the authentication keys of all the old users do not need to be redistributed. Compared with the existing quantum-group authentication protocols, the proposed protocol is more flexible and suitable in practical scenarios.

关 键 词：量子密码 群组认证 星型簇态 动态 

分 类 号：O413[理学—理论物理] TN918.1[理学—物理]