1 Information Security Center, State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China; 2 Information Security Center, School of Cyberspace Security, Beijing University of Posts and Telecommunications, Beijing 100876, China
Abstract Semi-quantum secret sharing (SQSS) is a branch of quantum cryptography which only requires the dealer to have quantum capabilities, reducing the difficulty of protocol implementation. However, the efficiency of the SQSS protocol still needs to be further studied. In this paper, we propose a semi-quantum secret sharing protocol, whose efficiency can approach 100% as the length of message increases. The protocol is based on single particles to reduce the difficulty of resource preparation. Particle reordering, a simple but effective operation, is used in the protocol to improve efficiency and ensure security. Furthermore, our protocol can share specific secrets while most SQSS protocols could not. We also prove that the protocol is secure against common attacks.
Fund: Project supported by the National Key Research and Development Program of China (Grant No. 2020YFB1805405), the 111 Project (Grant No. B21049), the National Natural Science Foundation of China (Grant No. 62272051), the Foundation of Guizhou Provincial Key Laboratory of Public Big Data (Grant No. 2019BDKFJJ014), and the Fundamental Research Funds for the Central Universities of China (Grant Nos. 2019XD-A02 and 2020RC38).
Ding Xing(邢丁), Yifei Wang(王艺霏), Zhao Dou(窦钊), Jian Li(李剑),Xiubo Chen(陈秀波), and Lixiang Li(李丽香) Efficient semi-quantum secret sharing protocol using single particles 2023 Chin. Phys. B 32 070308
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