A novel quantum information hiding protocol based on entanglement swapping of high-level Bell states  

作　　者：徐淑奖 陈秀波 王连海 钮心忻 杨义先 

机构地区：[1]Shandong Provincial Key Laboratory of Computer Networks, Shandong Computer Science Center (National Supercomputer Center in Jinan) [2]Information Security Center, State Key Laboratory of Networking and Switching Technology,Beijing University of Posts and Telecommunications [3]State Key Laboratory of Information Security, Institute of Information Engineering, Chinese Academy of Sciences

出　　处：《Chinese Physics B》2015年第5期231-238,共8页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.61303199,61272514,61170272,61121061,and 61411146001);the Shandong Provincial Natural Science Foundation of China(Grant Nos.ZR2013FM025,ZR2013FQ001,and ZR2014FM003);the Shandong Provincial Outstanding Research Award Fund for Young Scientists of China(Grant Nos.BS2013DX010 and BS2014DX007);the Program for New Century Excellent Talents in Universities,China(Grant No.NCET-13-0681);the National Development Foundation for Cryptological Research,China(Grant No.MMJJ201401012);the Fok Ying Tong Education Foundation,China(Grant No.131067);the Shandong Academy of Sciences Youth Fund Project,China(Grant No.2013QN007)

摘　　要：Using entanglement swapping of high-level Bell states, we first derive a covert layer between the secret message and the possible output results of the entanglement swapping between any two generalized Bell states, and then propose a novel high-efficiency quantum information hiding protocol based on the covert layer. In the proposed scheme, a covert channel can be built up under the cover of a high-level quantum secure direct communication （QSDC） channel for securely transmitting secret messages without consuming any auxiliary quantum state or any extra communication resource. It is shown that this protocol not only has a high embedding efficiency but also achieves a good imperceptibility as well as a high security.Using entanglement swapping of high-level Bell states, we first derive a covert layer between the secret message and the possible output results of the entanglement swapping between any two generalized Bell states, and then propose a novel high-efficiency quantum information hiding protocol based on the covert layer. In the proposed scheme, a covert channel can be built up under the cover of a high-level quantum secure direct communication （QSDC） channel for securely transmitting secret messages without consuming any auxiliary quantum state or any extra communication resource. It is shown that this protocol not only has a high embedding efficiency but also achieves a good imperceptibility as well as a high security.

关 键 词：quantum information hiding quantum covert＇channel entanglement swapping high-level Bell states 

分 类 号：O413[理学—理论物理] TN918[理学—物理]