根据GHZ(Greenberger-Horne-Zeilinger)态的纠缠特性,设计了一种基于五粒子GHZ态的量子秘密共享协议。协议中由发起者制备五粒子GHZ态的量子序列, 秘密共享方总人数为4, 只有当4个人都参与解密时才能解出秘密信息。分析了协议的正确性和安全性, 结果表明协议能抵抗截获重发攻击、中间人攻击和纠缠攻击。当诱惑粒子存在时, 使用模型化工具Prism得到了窃听者在不同噪声环境下被发现的概率。

According to the entanglement features of GHZ (Greenberger-Horne-Zeilinger) states, a quantum secret sharing protocol based on the five-particle GHZ state is designed. In the protocol, the quantum sequence of the five-particle GHZ state is prepared by the initiator, and the total number of the secret sharing parties is 4. Only when all the four people are involved in decryption can the secret information be solved. The correctness and security of the protocol are analyzed, and the results show that the protocol can be used to resist the interception retransmission attack, the man-in-the-middle attack and the entanglement attack. When the temptation particles exist, the probabilities of being found for the eavesdroppers under different noise environments are obtained by using the modeling tool Prism.