SECURITY OF QUANTUM SECRET SHARING WITH TWO-PARTICLE ENTANGLEMENT AGAINST INDIVIDUAL ATTACKS

被引：0

作者：

Qin, Su-Juan ^{[1
]}

Gao, Fei ^{[1
]}

Wen, Qiao-Yan ^{[1
]}

Zhu, Fu-Chen ^{[2
]}

机构：

[1] Beijing Univ Posts & Telecommun, State Key Lab Networking & Switching Technol, Beijing 100876, Peoples R China

[2] Natl Lab Modern Commun, Chengdu 610041, Peoples R China

来源：

QUANTUM INFORMATION & COMPUTATION | 2009年 / 9卷 / 9-10期

基金：

北京市自然科学基金;

关键词：

quantum secret sharing; quantum cryptography; individual attack; security; CRYPTOGRAPHY; INFORMATION;

D O I：

暂无

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

Security is the most important criterion to evaluate cryptography protocols. We investigate the security of one important quantum secret sharing protocol [Phys. Rev. A 59, 162 (1999)] (KKI protocol). By discriminating two mixed states. we derive the optimal relationship between the induced error rate (QBER) and the maximal amount of information gained by a dishonest participant. For a specific amount of eavesdropper's knowledge on the shared secret that we consider, the disturbance on the quantum state in terms of QBER, is actually larger for the hybrid protocol than the KKI protocol. Therefore, the hybrid protocol appears to be better able to detect, eavesdroppers than the KKI protocol. For this reason, we do not see and, reason to employ the K K I protocol against individual attacks.

引用

页码：765 / 772

页数：8

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