Note: MP-SPDZ includes additional functionality such as private inputs.

This repository contains code to run computation with Yao's garbled circuits optimized for AES-NI by Bellare et al..

Preface:

The main purpose of this software is to provide a quick way to benchmark the computation of some programs written in a subset of the SPDZ high-level language (using purely sint and sfix) with Yao's garbled circuits. Private inputs are not supported.

Requirements:

• GCC (tested with 7.2) or LLVM (tested with 3.8)
• MPIR library, compiled with C++ support (use flag --enable-cxx when running configure)
• libsodium library, tested against 1.0.11
• CPU supporting AES-NI, PCLMUL and AVX2
• Python 2.x
• If using macOS, Sierra or later

Compile the VM:

Run make yao (use the flag -j for faster compilation multiple threads).

Compile the circuit:

Run ./compile.py -D <program> to compile the Programs/Source/<program>.mpc. See gc_tutorial.mpc and gc_fixed_point_tutorial.mpc for examples.

Run the protocol:

• Run everything locally: ./yao-simulate.x <program>
• Run on different hosts:
  • Garbler: ./yao-player.x -p 0 <program>
  • Evaluator: ./yao-player.x -p 1 -h <garbler host> <program>