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Multi-party ECDSA

This project is a Typescrypt & Rust implementation of {t,n}-threshold ECDSA (elliptic curve digital signature algorithm) for Teleport bridge protocol.

CAUTION: Current project is for testing in local environment without any containers, and will be updated soon

Library Introduction

The library was built with four core design principles in mind:

  1. Multi-protocol support
  2. Build mpc oracle nodes for teleport bridge
  3. Testing purpose

Setup

  1. You need Rust and GMP library (optionally) to be installed on your computer.

    • Run cargo build --release --examples
    • Don't have GMP installed? Use this command instead: 
      cargo build --release --examples --no-default-features --features curv-kzen/num-bigint
      But keep in mind that it will be less efficient.

    Either of commands will produce binaries into ./target/release/examples/ folder.

Run GG18 sm_manger

  • Run cd sm_manager
  • Run cargo build --release --examples
  • Run ./target/release/examples/gg18_sm_manager

Run fist mpc node

  • Run cd mpc_node_0
  • Run pnpm install
  • Run cd ./src/multiparty

build multiparty library

  • Run cargo build --release --examples Once build is done, move /target/release/examples and edit client name i.e. gg18_sign_client -> gg18_sign_client0 (0 is index of mpc node)

edit env variables according to example.env file

Run second mpc node

Build second node accordig to above instruction

Example

Once two sm_sign_manager, and two mpc nodes are running successfully, you can test sign function by send http request Please refer to ./requests

References

[1] https://eprint.iacr.org/2017/552.pdf

[2] https://eprint.iacr.org/2019/114.pdf

[3] https://eprint.iacr.org/2019/503.pdf

[4] https://eprint.iacr.org/2020/540.pdf