Cryptanalysis and improvement of a quantum secret sharing scheme based on x-type entangled states

In the paper [2010 Chin. Phys. B 19 050306], Yang et al. put forward a novel three-party quantum secret sharing protocol of secure direct communication based on x-type entangled states, they claimed that the scheme is secure. However, in this paper, we study the security of the protocol and find tha...

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Bibliographic Details
Published in中国物理：英文版 Vol. 21; no. 1; pp. 1 - 5
Main Author 朱珍超 张玉清 付安民
Format Journal Article
LanguageEnglish
Published 2012
Subjects
基础
安全直接通信
密码分析
物理学报
秘密共享方案
纠缠态
重发攻击
量子秘密共享
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Summary:In the paper [2010 Chin. Phys. B 19 050306], Yang et al. put forward a novel three-party quantum secret sharing protocol of secure direct communication based on x-type entangled states, they claimed that the scheme is secure. However, in this paper, we study the security of the protocol and find that it is insecure. Applying intercept and resend attack, the agent Bob can obtain Alice＇s secret without the help from the other agent Charlie. In the end, we give our effective modification for its improvement.
Bibliography:In the paper [2010 Chin. Phys. B 19 050306], Yang et al. put forward a novel three-party quantum secret sharing protocol of secure direct communication based on x-type entangled states, they claimed that the scheme is secure. However, in this paper, we study the security of the protocol and find that it is insecure. Applying intercept and resend attack, the agent Bob can obtain Alice＇s secret without the help from the other agent Charlie. In the end, we give our effective modification for its improvement.
11-5639/O4
Zhu Zhen-Chao, Zhang Yu-Qing, and Fu An-Min（ Information Security Research Center, Southeast University, Nanjing 210096, China b） National Computer Network Intrusion Protection Center, Graduate University of Chinese Academy of Sciences Beijing 100049, China
quantum secret sharing, quantum entanglement, bell state nonorthogonal base
ISSN:1674-1056
2058-3834