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arXiv quant-ph/0407200quant-phcs.CRmath.CO
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辅助量子秘密共享

Assisted Quantum Secret Sharing

Sudhir Kumar Singh, R. Srikanth

摘要:

来自不可克隆定理的量子秘密共享的一个限制是访问结构中的任何授权集对都应该重叠。从应用的观点来看,这对秘密共享施加了不自然的约束。我们提出了一个概括,称为辅助QSS(AQSS),没有成对重叠的授权集的访问结构是允许的,提供一些股票被扣留的股票交易商。我们表明,不超过$λ-1$扣留的股份是必需的,其中$λ$是最小数量的{ \em部分链接类}之间的授权集的QSS。这在QSS方案中很有用,其中股票交易商根据定义是诚实的,并且等价于秘密重构器。我们的结果意味着,这样的应用QSS不需要被阻挠的无克隆定理。

英文摘要:

A restriction on quantum secret sharing (QSS) that comes from the no-cloning theorem is that any pair of authorized sets in an access structure should overlap. From the viewpoint of application, this places an unnatural constraint on secret sharing. We present a generalization, called assisted QSS (AQSS), where access structures without pairwise overlap of authorized sets is permissible, provided some shares are withheld by the share dealer. We show that no more than $λ-1$ withheld shares are required, where $λ$ is the minimum number of {\em partially linked classes} among the authorized sets for the QSS. This is useful in QSS schemes where the share dealer is honest by definition and is equivalent to a secret reconstructor. Our result means that such applications of QSS need not be thwarted by the no-cloning theorem.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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