Meteor: Improved Secure 3-Party Neural Network Inference with Reducing Online Communication Costs

A privacy-preserving framework for efficient 3-party protocols tailored for neural networks, the paper is avaiable eprint/2023/100. This work builds on Falcon.

Table of Contents

• Warning
• Requirements
• Source Code
  • Repository Structure
  • Building the code
  • Running the code

Warning

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This codebase is released solely as a reference for other developers, as a proof-of-concept, and for benchmarking purposes. In particular, it has not had any security review, has a number of implementational TODOs, has a number of known bugs (especially in the malicious implementation), and thus, should be used at your own risk. You can contribute to this project by creating pull requests and submitting fixes and implementations. The code has not run end-to-end inference and we provide online computation at present, the setup phase will be added in future.

Requirements

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• The code should work on most Linux distributions (It has been developed and tested with Ubuntu 18.04).

• Required packages for Meteor:

  • g++
  • make
  • libssl-dev

  Install these packages with your favorite package manager, e.g, sudo apt-get install <package-name>.

Source Code

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Repository Structure

• files/ - Shared keys, IP addresses and data files.
• files/preload - Contains data for pretrained network from SecureML. The other networks can be generated using scripts and functions in secondary.cpp
• lib_eigen/ - Eigen library for faster matrix multiplication.
• src/ - Source code.
• util/ - Dependencies for AES randomness.
• scripts/ - Contains python code to generate trained models for accuracy testing over a batch.
• The god script makes remote runs simpler (as well as the makefile)

Building the code

To build Meteor, run the following commands:

cd Meteor
make all -j$(nproc)

Running the code

To run the code, simply choose one of the following options:

• make: Prints all the possible makefile options.
• make terminal: Runs the 3PC code on localhost with output from $P_0$ printed to standard output.
• make file: : Runs the 3PC code on localhost with output from $P_0$ printed to a file (in output/3PC.txt)
• make valg: Useful for debugging the code for set faults. Note that the -03 optimization flag needs to be suppressed (toggle lines 42, 43 in makefile)
• make command: Enables running a specific network, dataset, adversarial model, and run type (localhost/LAN/WAN) specified through the makefile. This takes precedence over choices in the src/main.cpp file.
• To run the code over tmux over multiple terminals, make zero, make one, and make two come in handy.
• Finally, the makefile (line 4-15) contains the descriptions of the arguments accepted by the executable.

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For questions, please create git issues; for eventual replies, you can also reach out to [email protected]