We propose a dynamic quantum secret sharing (DQSS) protocol based on traveling single-qubits where any number of players can join or leave the protocol according to the dealer’s and players’ will. The protocol can resist collusion attacks of dishonest players by using an honesty test based on some unambiguous unitary operations. Specifically, the proposed protocol is secure against active attacks from dishonest players, which is different from existing protocols that consider only passive attacks based on the assumption that players are honest but curious. By using the asymmetric strategy, the efficiency of our DQSS protocol can be made asymptotically close to 100%. Compared with previous DQSS protocols, our protocol is securer, more efficient and more practical.

中文翻译：

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一种针对主动攻击的非对称动态多方量子秘密共享

我们提出了一种基于旅行单量子比特的动态量子秘密共享 (DQSS) 协议，其中任意数量的玩家可以根据经销商和玩家的意愿加入或离开该协议。该协议可以通过基于一些明确的单一操作的诚实测试来抵抗不诚实玩家的合谋攻击。具体来说，所提出的协议对来自不诚实玩家的主动攻击是安全的，这与现有的协议不同，后者仅考虑基于玩家诚实但好奇的假设的被动攻击。通过使用非对称策略，我们的 DQSS 协议的效率可以渐近接近 100%。与以往的 DQSS 协议相比，我们的协议更安全、更高效、更实用。