FairplayMP - A system for secure multi-party computation

Assaf Ben-David*, Noam Nisan, Benny Pinkast

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

357 Scopus citations


We present FairplayMP (for "Fairplay Multi-Party"), a system for secure multi-party computation. Secure computation is one of the great achievements of modern cryptography, enabling a set of untrusting parties to compute any function of their private inputs while revealing nothing but the result of the function. In a sense, FairplayMP lets the parties run a joint computation that ensulates a trusted party which receives the inputs from the parties, computes the function, and privately informs the parties of their outputs. FairplayMP operates by receiving a high-level language description of a function and a configuration file describing the participating parties. The system compiles the function into a description as a Boolean circuit, and perform a distributed evaluation of the circuit while revealing tiothing else. FairplayMP supplements the Fairplay system [16], which supported secure computation between two parties. The underlying protocol of FairplayMP is the BeaverMicali-Rogaway (BMR) protocol which runs in a constant number of communication rounds (eight rounds in our implementation). We modified the BMR protocol in a novel way and considerably improved its performance by using the Ben-Or-Goldwasser-Wigderson (BGW) protocol for the purpose of constructing gate tables. We chose to use this protocol since we believe that the number of conlnlunication rounds is a major factor oti the overall performance of the protocol. We conducted different experiments which measure the effect of different parameters on the performance of the system and demonstrate its scalability. (We can now tell, for example, that running a second-price auction between four bidders, using five computation players. takes about 8 seconds.)

Original languageAmerican English
Title of host publicationProceedings of the 15th ACM Conference on Computer and Communications Security, CCS'08
Number of pages10
StatePublished - 2008
Event15th ACM conference on Computer and Communications Security, CCS'08 - Alexandria, VA, United States
Duration: 27 Oct 200831 Oct 2008

Publication series

NameProceedings of the ACM Conference on Computer and Communications Security
ISSN (Print)1543-7221


Conference15th ACM conference on Computer and Communications Security, CCS'08
Country/TerritoryUnited States
CityAlexandria, VA


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