Paper 2008/415 Original: eprint.iacr.org/2008/415 ↗
Asynchronous Multiparty Computation: Theory and Implementation
Abstract
We propose an asynchronous protocol for general multiparty computation with perfect security and communication complexity O(n^2 |C| k) where n is the number of parties, |C| is the size of the arithmetic circuit being computed, and k is the size of elements in the underlying field. The protocol guarantees termination if the adversary allows a preprocessing phase to terminate, in which no information is released. The communication complexity of this protocol is the same as that of a passively secure solution up to a constant factor. It is secure against an adaptive and active adversary corrupting less than n/3 players. We also present a software framework for implementation of asynchronous protocols called VIFF (Virtual Ideal Functionality Framework), which allows automatic parallelization of primitive operations such as secure multiplications, without having to resort to complicated multithreading. Benchmarking of a VIFF implementation of our protocol confirms that it is applicable to practical non-trivial secure computations. VIFF can be downloaded from http://viff.dk/.
Metadata
- Available format(s)
PDF- Category
- Implementation
- Publication info
- Preprint.
- History
- 2008-10-27: last updated
- 2008-10-02: published
- Short URL
- https://ia.cr/2008/415
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2008/415,
author = {Ivan Damgård and Martin Geisler and Mikkel Krøigaard and Jesper Buus Nielsen},
title = {Asynchronous Multiparty Computation: Theory and Implementation},
howpublished = {Cryptology {ePrint} Archive, Paper 2008/415},
year = {2008},
url = {https://eprint.iacr.org/2008/415}
}