基于量子理论的多方秘密共享方案的构建

Construction of multi-party secret sharing scheme based on quantum theory

量子的独特性质使它在秘密共享方面有着很大的应用前景,但在现实情况下秘密代理者的数目会根据实际情况的不同而发生变化。利用五粒子或六粒子的纠缠量子态构造了五和六秘密代理者数目下的量子多方秘密共享方案,在此基础上将其拓展并构建了在n个秘密代理者情况下的秘密共享方案。这使得秘密共享者在秘密代理者数目发生变化时能够选取合适的量子秘密共享方案。此外,在每种秘密代理者数目情形下都使用基于量子纠缠的量子隐形传态的方式实现秘密共享,进一步增加了方案的可选择性。最后,对提出的量子多方秘密共享方案的安全性进行了分析。

The unique character of quantum makes it have a great application prospect in secret sharing. However,the number of secret-agents would change according to different actual conditions in reality. The paper used five or six particle entangled quantum states to build schemes in five and six quantities of secret-agents,and it extended them to n secret-agents secret scheme based on the schemes mentioned before. It could make secret-sharers choose right scheme when the number of secretagents change. Furthermore,every scheme would achieve secret sharing based on quantum teleportation in quantum entangled state which further extended the alternative of the scheme. At last,it analyzed the security of the proposed quantum multiparty secret sharing scheme.