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Paper 2016/768

High-Throughput Semi-Honest Secure Three-Party Computation with an Honest Majority

Toshinori Araki, Jun Furukawa, Yehuda Lindell, Ariel Nof, and Kazuma Ohara

Abstract

In this paper, we describe a new information-theoretic protocol (and a computationally-secure variant) for secure {\em three}-party computation with an honest majority. The protocol has very minimal computation and communication; for Boolean circuits, each party sends only a single bit for every AND gate (and nothing is sent for XOR gates). Our protocol is (simulation-based) secure in the presence of semi-honest adversaries, and achieves privacy in the client/server model in the presence of malicious adversaries. On a cluster of three 20-core servers with a 10Gbps connection, the implementation of our protocol carries out over \textit{1.3 million} AES computations per second, which involves processing over \textit{7 billion gates per second}. In addition, we developed a Kerberos extension that replaces the ticket-granting-ticket encryption on the Key Distribution Center (KDC) in MIT-Kerberos with our protocol, using keys/ passwords that are shared between the servers. This enables the use of Kerberos while protecting passwords. Our implementation is able to support a login storm of over 35,000 logins per second, which suffices even for very large organizations. Our work demonstrates that high-throughput secure computation is possible on standard hardware.

Metadata
Available format(s)
PDF
Category
Cryptographic protocols
Publication info
Published elsewhere. ACM CCS 2016
DOI
10.1145/2976749.2978331
Keywords
secure multiparty computationhonest majorityconcrete efficiencyKerberos
Contact author(s)
lindell @ biu ac il
History
2016-11-10: revised
2016-08-12: received
See all versions
Short URL
https://ia.cr/2016/768
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2016/768,
      author = {Toshinori Araki and Jun Furukawa and Yehuda Lindell and Ariel Nof and Kazuma Ohara},
      title = {High-Throughput Semi-Honest Secure Three-Party Computation with an Honest Majority},
      howpublished = {Cryptology ePrint Archive, Paper 2016/768},
      year = {2016},
      doi = {10.1145/2976749.2978331},
      note = {\url{https://eprint.iacr.org/2016/768}},
      url = {https://eprint.iacr.org/2016/768}
}
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