dart_2_party_ecdsa

Dart client SDK for a two party ECDSA TSS (Threshold Signature Scheme). Its built on top of Rust-based ECDSA library which utilizes Multiparty Computation (MPC). MPC allows multiple parties to jointly compute digital signatures without exposing their private inputs. Threshold signature scheme enables a minimum number of pre-selected participants to jointly create a cryptographic digital signature using multiparty computation. ECDSA is one type of such a signature scheme based on elliptic curves.

Functionality overview

• Pairing with remote counterpart
• Key generation
• Signature generation
• Backups

Getting Started

To add plugin as a dependency in external app:

1. Add the following to your pubspec.yaml:

   dependencies:
     dart_2_party_ecdsa:
       git:
         url: https://github.com/silence-laboratories/silent-shard-flutter-sdk.git
         ref: release tag
   

2. Run flutter pub get from terminal

Project structure

• lib: contains the Dart code that defines high-level API, and calls into the native code using dart:ffi.

• platform folders (android, ios, macos): Contains the build artifacts for bundling the native code libraries with the platform application.

• example: sample app for different platforms running integration tests, showcasing usage and serving as an example.

Usage examples