A Multiparty Controlled Bidirectional Quantum Secure Direct Communicationand Authentication Protocol Based on EPR Pairs  

作　　者：CHANG Yan ZHANG Shi-Bin YAN Li-Li SHENG Zhi-Wei 昌燕;张仕斌;闫丽丽;盛志伟(Department of Network Engineering,Chengdu University of Information Technology,Chengdu 610225)

机构地区：[1]Department of Network Engineering,Chengdu University of Information Technology,Chengdu 610225

出　　处：《Chinese Physics Letters》2013年第6期9-12,共4页中国物理快报（英文版）

基　　金：Supported by the Science and Technology Support Project of Sichuan Province of China under Grant No 13ZC2138;the Young Persons Project of Sichuan Province of China under Grant No 12ZB017.

摘　　要：A multiparty controlled bidirectional quantum secure direct communication and authentication protocol is proposed based on EPR pair and entanglement swapping.The legitimate identities of communicating parties are encoded to Bell states which act as a detection sequence.Secret messages are transmitted by using the classical XOR operation,which serves as a one-time-pad.No photon with secret information transmits in the quantum channel.Compared with the protocols proposed by Wang et al.[Acta Phys.Sin.56(2007)673;Opt.Commun.266(2006)732],the protocol in this study implements bidirectional communication and authentication,which defends most attacks including the‘man-in-the-middle’attack efficiently.

关 键 词：QUANTUM QUANTUM EPR 

分 类 号：O41[理学—理论物理]