How to Collaborate between Threshold Schemes
How to Collaborate between Threshold Schemes
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发表时间：
2013-05
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通讯作者：
Daoshun Wang;Ziwei Ye;Xiaobo Li
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作者：
Daoshun Wang;Ziwei Ye;Xiaobo Li
阈值方案已用于通过向参与者分配份额来保护秘密。为了保护两个秘密，我们可以使用两个单独的传统方案，例如（t1，n1）方案和（t2，n2）方案。如果两个方案都有 u (<=min(t1, t2)) 名参与者参与，则这些 u 参与者中的每一个都必须保留两个不同的份额。本文提出了一种允许每个普通参与者只保留一份份额的方法。我们的方法构造两个具有 u 个公共交叉点的多项式。我们给出了理论细节和两个论证性例子。该算法还可以处理两个以上方案之间的协作。
Threshold schemes have been used to protect secrets by distributing shares to participants. To protect two secrets, we can use two separate traditional schemes, say, a (t1, n1) scheme and a (t2, n2) scheme. If there are u (<=min(t1, t2)) participants involved in both schemes, each of these u participants must keep two different shares. This paper proposes a method that allows each common participant to keep only one share. Our method constructs two polynomials with u common crossover points. We give theoretical details and two demonstrative examples. This algorithm can also handle the collaboration between more than two schemes.