Revisiting Fairness in MPC: Polynomial Number of Parties and General Adversarial Structures
Revisiting Fairness in MPC: Polynomial Number of Parties and General Adversarial Structures
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重新审视 MPC 中的公平性:参与方的多项式数量和一般对抗结构
DOI:
10.1007/978-3-030-64378-2_21
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Dachman-Soled, Dana
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文献类型:
--
作者:
Dachman-Soled, Dana
We investigate fairness in secure multiparty computation when the number of partiesgrows polynomially in the security parameter,. Prior to this work, efficient protocols achieving fairness with no honest majority and polynomial number of parties were known only for the AND and OR functionalities (Gordon and Katz, TCC’09). We show the following:We first consider symmetric Boolean functions, where the underlying function f n / 2 , n / 2 : { 0 , … , n / 2 } × { 0 , … , n / 2 } → { 0 , 1 } can be computed fairly and efficiently in the 2-party setting. We present an efficient protocol for any suchFtoleratingn/2 or fewer corruptions, fornumber of parties.We present an efficient protocol forn-party majority toleratingor fewer corruptions, fornumber of parties. The construction extends toor fewer corruptions, for constantc.We extend both of the above results to more general types of adversarial structures and present instantiations of non-threshold adversarial structures of these types. These instantiations are obtained via constructions ofprojective planesandcombinatorial designs.
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DOI:
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发表时间:
2013
期刊:
Theory of Cryptography Conference
影响因子:
--
作者:
Gilad Asharov;Yehuda Lindell;T. Rabin
通讯作者:
T. Rabin
DOI:
--
发表时间:
2018
期刊:
Electron. Colloquium Comput. Complex.
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Eran Omri
DOI:
--
发表时间:
2015
期刊:
Theory of Cryptography Conference
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作者:
Gilad Asharov;A. Beimel;Nikolaos Makriyannis;Eran Omri
通讯作者:
Eran Omri
DOI:
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发表时间:
2010
期刊:
Theory of Cryptography Conference
影响因子:
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作者:
Dov S. Gordon;Yuval Ishai;T. Moran;R. Ostrovsky;A. Sahai
通讯作者:
A. Sahai
DOI:
--
发表时间:
2017
期刊:
IACR Cryptology ePrint Archive
影响因子:
--
作者:
Yehuda Lindell;T. Rabin
通讯作者:
T. Rabin