License: Creative Commons Attribution 3.0 Unported license (CC BY 3.0)
When quoting this document, please refer to the following
DOI: 10.4230/LIPIcs.DISC.2020.44
URN: urn:nbn:de:0030-drops-131223
URL: https://drops.dagstuhl.de/opus/volltexte/2020/13122/
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Choudhury, Ashish

Brief Announcement: Optimally-Resilient Unconditionally-Secure Asynchronous Multi-Party Computation Revisited

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Abstract

In this paper, we present an optimally-resilient, unconditionally-secure asynchronous multi-party computation (AMPC) protocol for n parties, tolerating a computationally unbounded adversary, capable of corrupting up to t < n/3 parties. Our protocol needs a communication of 𝒪(n⁴) field elements per multiplication gate. This is to be compared with previous best AMPC protocol (Patra et al, ICITS 2009) in the same setting, which needs a communication of 𝒪(n⁵) field elements per multiplication gate. To design our protocol, we present a simple and highly efficient asynchronous verifiable secret-sharing (AVSS) protocol, which is of independent interest.

BibTeX - Entry

@InProceedings{choudhury:LIPIcs:2020:13122,
  author =	{Ashish Choudhury},
  title =	{{Brief Announcement: Optimally-Resilient Unconditionally-Secure Asynchronous Multi-Party Computation Revisited}},
  booktitle =	{34th International Symposium on Distributed Computing (DISC 2020)},
  pages =	{44:1--44:3},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-168-9},
  ISSN =	{1868-8969},
  year =	{2020},
  volume =	{179},
  editor =	{Hagit Attiya},
  publisher =	{Schloss Dagstuhl--Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/opus/volltexte/2020/13122},
  URN =		{urn:nbn:de:0030-drops-131223},
  doi =		{10.4230/LIPIcs.DISC.2020.44},
  annote =	{Keywords: Verifiable Secret-sharing, Secure MPC, Fault-tolerance, Byzantine faults, secret-sharing, unconditional-security, privacy}
}

Keywords: Verifiable Secret-sharing, Secure MPC, Fault-tolerance, Byzantine faults, secret-sharing, unconditional-security, privacy
Collection: 34th International Symposium on Distributed Computing (DISC 2020)
Issue Date: 2020
Date of publication: 07.10.2020


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