### Cross&Clean: Amortized Garbled Circuits with Constant Overhead

Jesper Buus Nielsen and Claudio Orlandi

##### Abstract

Garbled circuits (GC) are one of the main tools for secure two-party computation. One of the most promising techniques for efficiently achieving active-security in the context of GCs is the so called \emph{cut-and-choose} approach, which in the last few years has received many refinements in terms of the number of garbled circuits which need to be constructed, exchanged and evaluated. In this paper we ask a simple question, namely \emph{how many garbled circuits are needed to achieve active security?} and we propose a novel protocol which achieves active security while using only a constant number of garbled circuits per evaluation in the amortized setting.

Available format(s)
Category
Cryptographic protocols
Publication info
Preprint. Minor revision.
Keywords
garbling schemestwo-party computation
Contact author(s)
jbn @ cs au dk
History
2017-01-20: revised
See all versions
Short URL
https://ia.cr/2016/495

CC BY

BibTeX

@misc{cryptoeprint:2016/495,
author = {Jesper Buus Nielsen and Claudio Orlandi},
title = {Cross&Clean:  Amortized Garbled Circuits with Constant Overhead},
howpublished = {Cryptology ePrint Archive, Paper 2016/495},
year = {2016},
note = {\url{https://eprint.iacr.org/2016/495}},
url = {https://eprint.iacr.org/2016/495}
}

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