Eavesdropping in a quantum secret sharing protocol based on Grover algorithm and its solution  

作　　者：HAO Liang1, LI JunLin1 & LONG GuiLu1,2 1Key Laboratory for Atomic and Molecular NanoSciences and Department of Physics, Tsinghua University, Beijing 100084, China 2Tsinghua National Laboratory for Information Science and Technology, Beijing 100084, China 

出　　处：《Science China(Physics,Mechanics & Astronomy)》2010年第3期491-495,共5页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China (GrantNos. 10775076 and 60635040);the National Basic Research Program of China (Grant No. 2006CB921106);the SRFPD Program of Education Ministry of China

摘　　要：A detailed analysis has showed that the quantum secret sharing protocol based on the Grover algorithm (Phys Rev A, 2003, 68: 022306) is insecure. A dishonest receiver may obtain the full information without being detected. A quantum secret-sharing protocol is presents here, which mends the security loophole of the original secret-sharing protocol, and doubles the information capacity.A detailed analysis has showed that the quantum secret sharing protocol based on the Grover algorithm (Phys Rev A, 2003, 68: 022306) is insecure. A dishonest receiver may obtain the full information without being detected. A quantum secret-sharing protocol is presents here, which mends the security loophole of the original secret-sharing protocol, and doubles the information capacity.

关 键 词：QUANTUM SECRET sharing Grover ALGORITHM QUANTUM CRYPTOGRAPHY QUANTUM search ALGORITHM 

分 类 号：O431.2[机械工程—光学工程]