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arXiv · 1305.1146

How to Collaborate between Threshold Schemes

Daoshun Wang·Ziwei Ye·Xiaobo Li
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Abstract

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.

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Daoshun Wang, Ziwei Ye, Xiaobo Li. 2013-05-06. How to Collaborate between Threshold Schemes. https://arxiv.org/abs/1305.1146

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