Threshold quantum secret sharing between multi-party and multi-party  

作　　者：YANG YuGuang1,2,3 & WEN QiaoYan4 1 College of Computer Science and Technology,Beijing University of Technology,Beijing 100124,China 2 State Key Laboratory of Integrated Services Network,Xidian University,Xi’an 710071,China 3 State Key Laboratory of Information Security (Graduate University of Chinese Academy of Sciences),Beijing 100049,China 4 State Key Laboratory of Networking and Switching Technology,Beijing University of Posts and Tele-communications,Beijing 100876,China 

出　　处：《Science China(Physics,Mechanics & Astronomy)》2008年第9期1308-1315,共8页中国科学：物理学、力学、天文学（英文版）

基　　金：the National Basic Research Program of China (973 Program)(Grant No 2007CB311100);the National High-Technology Research and Development Program of China (Grant Nos 2006AA01Z419 and 2006AA01Z440);the Major Research Plan of the National Natural Science Foundation of China (Grant No 90604023);the Scientific Research Common Program of Beijing Municipal Commission of Education (Grant No KM200810005004);the Scientific Research Foundation for the Youth of Beijing University of Technology (Grant No 97007016200701);the Doctoral Scientific Research Activation Foundation of Beijing University of Technology (Grant No 52007016200702);the ISN Open Foundation;the National Laboratory for Modern Communications Science Foundation of China (Grant No 9140C1101010601)

摘　　要：A threshold quantum secret sharing (TQSS) scheme between multi-party and multi-party was proposed using a sequence of single photons,which is useful and efficient when the parties of communication are not all present. We described the process of this TQSS scheme and discussed its security. It was shown that entan-glement is not necessary for quantum secret sharing. Moreover,the theoretic effi-ciency was improved to approach 100% as almost all the instances can be used for generating the private key,and each photon can carry one bit of information. This protocol is feasible with the present-day technique.A threshold quantum secret sharing (TQSS) scheme between multi-party and multi-party was proposed using a sequence of single photons, which is useful and efficient when the parties of communication are not all present. We described the process of this TQSS scheme and discussed its security. It was shown that entanglement is not necessary for quantum secret sharing. Moreover, the theoretic efficiency was improved to approach 100% as almost all the instances can be used for generating the private key, and each photon can carry one bit of information. This protocol is feasible with the present-day technique.

关 键 词：THRESHOLD QUANTUM SECRET sharing QUANTUM CRYPTOGRAPHY single PHOTON multi-party and multi-party 

分 类 号：O431.2[机械工程—光学工程]