[Resource Topic] 2008/483: Sharing DSS by the Chinese Remainder Theorem

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Title:
Sharing DSS by the Chinese Remainder Theorem

Authors: Kamer Kaya, Ali Aydın Selçuk

Abstract:

In this paper, we propose a new threshold scheme for the Digital Signature Standard (DSS) using Asmuth-Bloom secret sharing based on the Chinese Remainder Theorem (CRT). To achieve the desired result, we first show how to realize certain other threshold primitives using Asmuth-Bloom secret sharing, such as joint random secret sharing, joint exponential random secret sharing, and joint exponential inverse random secret sharing. We prove the security of our scheme against a static adversary. To the best of our knowledge, this is the first provably secure threshold DSS scheme based on the CRT.

ePrint: https://eprint.iacr.org/2008/483

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