Netinfo Security ›› 2023, Vol. 23 ›› Issue (6): 34-42.doi: 10.3969/j.issn.1671-1122.2023.06.004

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A Dynamic and Hierarchical Quantum Secret Sharing Protocol Based on Starlike Cluster States

YANG Yuguang1,2(), LU Jiayu1   

  1. 1. Faculty of Information Technology, Beijing University of Technology, Beijing 100124, China
    2. Beijing Key Laboratory of Trusted Computing, Beijing 100124, China
  • Received:2023-03-31 Online:2023-06-10 Published:2023-06-20

Abstract:

A hierarchical cluster state was constructed on the basis of the starlike cluster state, and then a dynamic, hierarchical quantum confidentiality sharing protocol was proposed using the constructed cluster state. The secret possessor distributed cluster particles with a hierarchical structure to each agent as his share. Agents assigned to higher ranking particles had higher authority while agents assigned to lower ranking particles had lower authority. Each class of agent did not have access to share information for agents of the same class, higher classes and lower classes. Due to the scalability of the cluster states, the proposed hierarchical quantum secret sharing scheme was dynamic, allowing for the additon of new agents at the same level, removal of old agents, and the upgrading and downgrading of agents between different layers. Finally, the article analysed the security of the proposed protocol.

Key words: quantum secret sharing, hierarchical, starlike cluster state, dynamic

CLC Number: