4.4 Article

Multi-Party Semi-Quantum Key Agreement Protocol Based on the Four-Qubit Cluster States

期刊

出版社

SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10773-022-05102-0

关键词

Semi-quantum key agreement protocol; Four-qubit cluster state; Delegate quantum computation; Confusion state

资金

  1. National Natural Science Foundation of China [61871205, 62161025]
  2. Top Double 1000 Talent Programme of Jiangxi Province [JXSQ2019201055]

向作者/读者索取更多资源

A multi-party semi-quantum key agreement protocol is proposed based on four-qubit cluster states, which defends against eavesdropping attack from quantum center by randomly inserting confusion states. The protocol is immune to participant attack and outside attack due to the properties of entanglement states. The qubit efficiency of the protocol is higher than most existing multi-party quantum key agreement protocols when more than five participants are involved. It is demonstrated that the proposed protocol is effective and fair.
A multi-party semi-quantum key agreement protocol was proposed based on delegating quantum computation with the four-qubit cluster states. By randomly inserting confusion states into the encoding particle sequences, the proposed protocol can defend against the eavesdropping attack from quantum center. Since quantum center does not perform joint measurement until all participants have completed the encoding processes, the protocol is immune to the participant attack. In addition, the protocol is free from outside attack because of the properties of entanglement states. And the qubit efficiency of the proposed multi-party semi-quantum key agreement protocol is higher than those of most existing multi-party quantum key agreement protocols when more than five participants are involved. It is demonstrated that the proposed multi-party semi-quantum key agreement protocol is effective and fair.

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