External attack of a quantum secret sharing scheme

Jianhong Shi; Shengli Zhang; Zhenggang Chang

doi:10.1109/ICIST.2013.6747680

External attack of a quantum secret sharing scheme

Jianhong Shi^*, Shengli Zhang, Zhenggang Chang

^*Corresponding author for this work

Zhengzhou Information Science Technology Institute

Research output: Contribution to conference › Paper › peer-review

Abstract

This paper analyzes the security of a quantum secret sharing protocol between multiparty and multiparty, which was proposed by Yan and Gao. We show that this protocol is not secure because an external attacker can obtain the secret message shared by the two groups, making use of entanglement swapping. There are two reasons leading to this result. Firstly, the messages, which are transmitted on the quantum and classical channels, are not protected by message authentication. Secondly, the last participant in group 1 knows more information about the shared secret by the two groups. This result shows that there are some hidden security loopholes in this kind of quantum secret sharing protocols.

Original language	English
Pages	874-877
Number of pages	4
DOIs	https://doi.org/10.1109/ICIST.2013.6747680
Publication status	Published - 2013
Externally published	Yes
Event	2013 IEEE 3rd International Conference on Information Science and Technology, ICIST 2013 - Yangzhou, Jiangsu, China Duration: 23 Mar 2013 → 25 Mar 2013

Conference

Conference	2013 IEEE 3rd International Conference on Information Science and Technology, ICIST 2013
Country/Territory	China
City	Yangzhou, Jiangsu
Period	23/03/13 → 25/03/13

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10.1109/ICIST.2013.6747680

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AU - Chang, Zhenggang

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AB - This paper analyzes the security of a quantum secret sharing protocol between multiparty and multiparty, which was proposed by Yan and Gao. We show that this protocol is not secure because an external attacker can obtain the secret message shared by the two groups, making use of entanglement swapping. There are two reasons leading to this result. Firstly, the messages, which are transmitted on the quantum and classical channels, are not protected by message authentication. Secondly, the last participant in group 1 knows more information about the shared secret by the two groups. This result shows that there are some hidden security loopholes in this kind of quantum secret sharing protocols.

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External attack of a quantum secret sharing scheme

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