Paper 2013/046

Fast and Maliciously Secure Two-Party Computation Using the GPU

Tore Kasper Frederiksen and Jesper Buus Nielsen

Abstract

We describe, and implement, a maliciously secure protocol for secure two-party computation, based on Yao's garbled circuit and an efficient OT extension, in a parallel computational model. The implementation is done using CUDA and yields the fastest results for maliciously secure two-party computation in a realistic and practical setting by using a simple consumer grade CPU and GPU. Our protocol further introduces some novel constructions in order to combine garbled circuits and an OT extension in a parallel and maliciously secure setting.

Note: Updated accordingly to the peer feedback of the extended abstract version.