Controlled quantum secure direct communication and authentication protocol based on five-particle cluster state and quantum one-time pad  

作　　者：Yan Chang Chunxiang Xu Shibin Zhang Lili Yan 

机构地区：[1]School of Computer Science & Engineering,University of Electronic Science and Technology of China [2]Department of Network Engineering,Chengdu University of Information Technology

出　　处：《Chinese Science Bulletin》2014年第21期2541-2546,共6页

基　　金：supported by the National Natural Science Foundation of China (61370203);the Science & Technology Pillar Program of Sichuan Province of China (2013GZX0137);the Youth Fund Project of Sichuan Province of China (12ZB017)

摘　　要：A controlled quantum secure direct communication and authentication protocol is proposed with a quantum one-time pad based on five-particle cluster state.Photon 4 in each five-particle cluster state is sent to the controller as permission.Unitary operation I(U)on photon4 according to identity-string of the receiver is used to forbid the controller to deduce secret message.The classical XOR operation serving as a one-time-pad is used to forbid external eavesdroppers to eavesdrop.Eavesdropping detection and identity authentication are implemented by previously shared reusable base identity-strings.In one transmission,one qubit of each five-particle cluster state is used as controller’s permission,and two qubits are used to transmit two classical bit information.A controlled quantum secure direct communi- cation and authentication protocol is proposed with a quantum one-time pad based on five-particle cluster state. Photon 4 in each five-particle cluster state is sent to the controller as permission. Unitary operation I （U） on photon 4 according to identity-string of the receiver is used to forbid the controller to deduce secret message. The classical XOR operation serving as a one-time-pad is used to forbid external eavesdroppers to eavesdrop. Eavesdropping detection and identity authentication are implemented by previously shared reusable base identity-strings. In one transmission, one qubit of each five-particle cluster state is used as controller＇s permission, and two qubits are used to transmit two classical bit information.

关 键 词：认证协议 一次一密 量子位 控制器 团簇 粒子 安全 量子比特 

分 类 号：O413[理学—理论物理]