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量子秘密共享是一种通过使用量子力学的基本原理, 实现在多个参与者之间安全分配和重建秘密信息的密码学协议. 本文提出了一种可验证的多方量子秘密共享协议, 该协议中存在一个具有验证能力的秘密分发者和多个接收方. 在协议执行过程中, 秘密分发者会通过设定的编码规则将欲共享的信息用对应的正交乘积态表示, 并将量子态进行分割发送给各个接收方, 只有各接收方共同合作才能最终恢复初始秘密信息. 同时, 考虑到在协议过程中可能存在参与者人数变化的情况, 加入了人员动态变化操作. 通过对协议的安全性分析, 证明了该协议可以抵抗常见的内部和外部攻击. 我们希望该思想能够对量子秘密共享的进一步研究产生积极的影响.Quantum secret sharing (QSS) is a cryptographic protocol that utilizes fundamental principles of quantum mechanics to securely distribute and reconstruct secret information among multiple participants. Most existing protocols rely on entangled states (such as Bell and GHZ states), but in practical applications. The preparation of entangled state is constrained by a short quantum coherence time, low state fidelity, etc., which makes it difficult to implement entangled resource-dependent QSS protocols. In this work, a novel practical and verifiable multi-party QSS protocol is proposed based on orthogonal product states, which are easier to prepare than entangled states. During the protocol preparation stage, the secret distributor first converts pre-shared classical secret information into the corresponding orthogonal product states according to the encoding rules, and pre-shares a communication key with participants via quantum key distribution (QKD), which is used to hide the initial quantum sequence information through subsequent particle transformation operations. After preparing the orthogonal product states, the distributor reorganizes the particles by position, extracting particles at the same position from each state to form new sequences, shuffling their order, then applying Hadamard operations using a pre-shared key, inserting decoy particles, and sending the sequences to the participants. After receiving it, participants conduct eavesdropping detection, use the same key for the inverse transformations, retain one particle from each sequence, and sequentially pass the remaining particles until the last participant receives a complete set, triggering state verification with the arbiter distributor. If the verification is successful, the particles will be returned to the first participant and the return stage will follow the same procedure. Only after both the transmission and return stage verifications have passed, will the distributor reveal the initial particle positions, allowing participants to collaboratively reconstruct the secret. In the protocol, the secret distributor acts as an arbitrator to verify the particle state information together with participants at designated points (the end of the transmission stage and the end of the return stage) in order to determine whether the particle-state information is error-free during transmission. If the verification fails at either stage, the protocol will be terminated immediately. Meanwhile, considering that the number of participants may change during the execution of the protocol, a dynamic scheme for personnel changes is designed to ensure the flexibility of the protocol. Through the analysis of possible internal and external attacks, It can be proven that our protocol can effectively resist the existing common attack. Using Qiskit simulation experiments, the core quantum procedures of the protocol can be successfully modeled. The experimental results provide strong computational validation of the theoretical feasibility of the protocol.
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Keywords:
- quantum secret sharing /
- verifiable /
- orthogonal product state /
- dynamic change
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图 1 协议整体流程图. 其中红色标注的量子序列是在传输阶段参与者进行保留的序列, 蓝色标注的量子序列是在传输阶段不同参与者的传输回合中待发送的序列
Fig. 1. The overall flowchart of the protocol. The quantum sequences marked in red are the sequences that the participants retain during the transmission stage, and the quantum sequences marked in blue are the sequences to be sent in the transmission rounds of different participants during the transmission phase.
图 2 有接收方退出时的协议流程, 其中红色标注的量子序列是在传输阶段参与者进行保留的序列, 蓝色标注的量子序列是在传输阶段不同参与者的传输回合中待发送的序列
Fig. 2. The protocol flow when a receiver withdraws, the quantum sequences marked in red are the sequences that the participants retain during the transmission stage, and the quantum sequences marked in blue are the sequences to be sent in the transmission rounds of different participants during the transmission phase.
图 3 有新的接收方加入时的协议流程, 其中红色标注的量子序列是在传输阶段参与者进行保留的序列, 蓝色标注的量子序列是在传输阶段不同参与者的传输回合中待发送的序列
Fig. 3. The protocol flow when a new receiver joins, the quantum sequences marked in red are the sequences that the participants retain during the transmission stage, and the quantum sequences marked in blue are the sequences to be sent in the transmission rounds of different participants during the transmission phase.
图 4 正交乘积态$ |\psi_2\rangle $的制备及仿真结果
Fig. 4. Preparation and simulation results of orthogonal product state $ |\psi_2\rangle $
图 5 正交乘积态$ |\psi_4\rangle $的制备及仿真结果
Fig. 5. Preparation and simulation results of orthogonal product state $ |\psi_4\rangle $.
图 6 正交乘积态$ |\psi_2\rangle $中的粒子在密钥值为011情况下的变换和恢复的电路图
Fig. 6. Circuit diagram for the transformation and recovery of particles in the orthogonal product state $ |\psi_2\rangle $under the key value of 011
图 7 正交乘积态$ |\psi_2\rangle $中的粒子在密钥值为011情况下的变换和恢复的测量结果
Fig. 7. Measurement results for the transformation and recovery of particles in the orthogonal product state $ |\psi_2\rangle $under the key value of 011.
图 8 正交乘积态$ |\psi_4\rangle $中的粒子在密钥值为101情况下的变换和恢复的电路图
Fig. 8. Circuit diagram for the transformation and recovery of particles in the orthogonal product state $ |\psi_4\rangle $under the key value of 101.
图 9 正交乘积态$ |\psi_4\rangle $中的粒子在密钥值为101情况下的变换和恢复的测量结果
Fig. 9. Measurement results for the transformation and recovery of particles in the orthogonal product state $ |\psi_4\rangle $ under the key value of 101.
协议 [25] [26] [27] [28] [29] 提出的协议 量子态 广义GHZ态 Bell态 GHZ态 Bell态 Bell态 正交乘积态 参与者测量 单粒子测量 单粒子测量 单粒子测量 Bell态测量 Bell态/单粒子测量 单粒子测量 量子比特数(QR) $N(n - 1)$ $2 n-2$ $N(n+1)$ $2 nm$ $2 N(n - 1)$ $Nn$ 量子效率 $ \dfrac{1}{n - 1} $ $ \dfrac{1}{2 n - 2} $ $ \dfrac{1}{n + 1} $ $ \dfrac{1}{2 n} $ $ \dfrac{1}{2 n - 2} $ $\dfrac{\lfloor\log_2 n\rfloor + 1}{n}$ 窃听检测资源 诱饵粒子 诱饵粒子 GHZ 诱饵粒子 诱饵粒子 诱饵粒子 准备量子位以添加代理 单光子 Bell态 d级GHZ态 Bell态 Bell态 随机量子态序列 易受合谋攻击 No No No No No No 是否对粒子执行变换操作 No Yes Yes Yes No Yes 
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[1] Hellman M, Diffie W 1976 IEEE Trans. Inf. Theory 22 644
Google Scholar
[2] Fujisaki E, Okamoto T 1999 Annual international cryptology conference Santa Barbara, California, USA, August 15–19, 1999 p537
[3] Bellare M, Desai A, Jokipii E, Rogaway P 1997 Proceedings 38 th Annual Symposium on Foundations of Computer Science Miami Beach, FL, USA, October 20–22, 1997 p394
[4] Feistel H 1973 Sci. Amer. 228 15
[5] Shor P W 1999 SIAM Rev. 41 303
Google Scholar
[6] Grover L K 1996 Proceedings of the Twenty-Eighth Annual ACM Symposium on Theory of Computing Philadelphia, Pennsylvania, May 22–24, 1996 p212
[7] Bennett C H, Brassard G 1984 Proc. Workshop on the Theory and Application of Cryptographic Techniques Santa Barbara, California, USA, August 19–22, 1984 p475
[8] 冯发勇, 张强 2007 4 1924
Google Scholar
Feng F Y, Zhang Q 2007 Acta Phys. Sin. 4 1924
Google Scholar
[9] Zhao Z, Chen Y A, Zhang A N, Yang T, Briegel H J, Pan J W 2004 Nature 430 54
Google Scholar
[10] Wang T Y, Wen Q Y 2011 Chin. Phys. B 20 040307
Google Scholar
[11] Jiang S X, Zhao B, Liang X Z 2021 Chin. Phys. B 30 060303
Google Scholar
[12] Deng F G, Long G L, Liu X S 2003 Phys. Rev. A 68 042317
Google Scholar
[13] 赵宁, 江英华, 周贤韬 2022 71 150304
Google Scholar
Zhao N, Jiang Y H, Zhou X T 2022 Acta Phys. Sin. 71 150304
Google Scholar
[14] Deng F G, Zhou H Y, Long G L 2006 J. Phys. A: Math. Gen. 39 14089
Google Scholar
[15] 孙莹, 杜建忠, 秦素娟, 温巧燕, 朱甫臣 2008 08 4689
Google Scholar
Sun Y, Du J Z, Qin S J, Wen Q Y, Zhu F C 2008 Acta Phys. Sin. 08 4689
Google Scholar
[16] Dai Y W, Qin H Y 2015 Chin. Phys. Lett. 32 100301
Google Scholar
[17] Hillery M, Bužek V, Berthiaume A 1999 Phys. Rev. A 59 1829
Google Scholar
[18] Karlsson A, Koashi M, Imoto N 1999 Phys. Rev. A 59 162
Google Scholar
[19] Xiao L, Lu Long G, Deng F G, Pan J W 2004 Phys. Rev. A 69 052307
Google Scholar
[20] Yang Y, Wen Q, Zhu F 2007 Sci. China Ser. G-Phys. Mech. Astron. 50 331
Google Scholar
[21] Wang T Y, Wen Q Y, Chen X B, Guo F Z, Zhu F C 2008 Opt. Commun. 281 6130
Google Scholar
[22] Wang C, Zhang Y 2009 Chin. Phys. B 18 3238
Google Scholar
[23] Jia H Y, Wen Q Y, Gao F, Qin S J, Guo F Z 2012 Phys. Lett. A 376 1035
Google Scholar
[24] Hsu J L, Chong S K, Hwang T, Tsai C W 2013 Quantum Inf. Process. 12 331
Google Scholar
[25] Du Y T, Bao W S 2018 Chin. Phys. B 27 080304
Google Scholar
[26] Yang C W, Tsai C W 2020 Quantum Inf. Process. 19 1
Google Scholar
[27] Hu W, Zhou R G, Li X, Fan P, Tan C 2021 Quantum Inf. Process. 20 1
Google Scholar
[28] Tian Y, Wang J, Bian G, Chang J, Li J 2024 Adv. Quantum Technol. 7 2400116
Google Scholar
[29] Lin J, Chen C C, Huang C Y 2024 Physica A 638 129615
Google Scholar
[30] Yu S, Oh C H 2015 arXiv: 1502.01274 [quant-ph]
[31] Guo G P, Li C F, Shi B S, Li J, Guo G C 2001 Phys. Rev. A 64 042301
Google Scholar
[32] Jiang D H, Wang J, Liang X Q, Xu G B, Qi H F 2020 Int. J. Theor. Phys. 59 436
Google Scholar
[33] Jiang D H, Hu Q Z, Liang X Q, Xu G B 2020 Int. J. Theor. Phys. 59 1442
Google Scholar
[34] Walgate J, Hardy L 2002 Phys. Rev. Lett. 89 147901
Google Scholar
[35] Xu G B, Wen Q Y, Qin S J, Yang Y H, Gao F 2016 Phys. Rev. A 93 032341
Google Scholar
[36] Feng Y, Shi Y 2009 IEEE Trans. Inf. Theory 55 2799
Google Scholar
[37] Deng F G, Li X H, Zhou H Y, Zhang Z J 2005 Phys. Rev. A 72 044302
Google Scholar
[38] Li X H, Deng F G, Zhou H Y 2006 Phys. Rev. A 74 054302
Google Scholar
[39] Cabello A 2000 Phys. Rev. Lett. 85 5635
Google Scholar
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