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一般访问结构秘密共享方案中基于整数规划的最优多重分配

Optimal multiple assignments based on integer programming in secret sharing schemes with general access structures

Mitsugu Iwamoto, Hirosuke Yamamoto, Hirohisa Ogawa

摘要:

已知对于任何一般接入结构,秘密共享方案(SSS)可以通过使用所谓的累积映射从(m,m)阈值方案构造,或者通过修改的累积映射从(t,m)阈值SSS构造。然而,这样构造的SSS通常不是有效的。在本文中,我们提出了一种新的方法来构建一个SSS从$(t,m)$阈值计划的任何给定的一般访问结构。在所提出的方法中,整数规划被用来优化分配的份额(t,m)-门限方案的一般访问结构的每个参与者。从最优性来看,它总是可以获得比累积映射更低的编码速率,除非它们给出最优分布。同样的方法也适用于为不完整的访问结构和/或坡道访问结构构建SSS。

英文摘要:

It is known that for any general access structure, a secret sharing scheme (SSS) can be constructed from an (m,m)-threshold scheme by using the so-called cumulative map or from a (t,m)-threshold SSS by a modified cumulative map. However, such constructed SSSs are not efficient generally. In this paper, we propose a new method to construct a SSS from a $(t,m)$-threshold scheme for any given general access structure. In the proposed method, integer programming is used to distribute optimally the shares of (t,m)-threshold scheme to each participant of the general access structure. From the optimality, it can always attain lower coding rate than the cumulative maps except the cases that they give the optimal distribution. The same method is also applied to construct SSSs for incomplete access structures and/or ramp access structures.

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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