FROSTED
Overview
This repository contains a Flutter application that integrates a Rust-based implementation of the FROST (Flexible Round-Optimized Schnorr Threshold) by the Zcash Foundation. It showcases an interactive demo, primarily focused on building cryptocurrency seedless wallets using threshold signatures, enhancing security and flexibility for cryptographic operations.
Key Features
-
FROST
support: utilizes the FROST library written in Rust, providing robust and secure threshold signature functionality. -
Ed25519
ciphersuite support. -
Trusted Dealer Keygen
setup: implements the trusted dealer setup, assuming local communication between participants. This setup is ideal for scenarios where secure, local key distribution is possible, such as in seedless wallets. -
flutter_rust_bridge integration: leverages the
flutter_rust_bridge
for seamless and efficient communication between Dart and Rust, ensuring smooth operation and integration.
Frosted demo app
Check the releases page for the Windows and MacOS applications.
Getting Started
Prerequisites
Flutter SDK
Rust
andCargo
- An understanding of threshold cryptography
flutter_rust_bridge
setup
Installation
Clone the repository:
git clone https://github.com/alienc0der/frosted
Navigate to the project directory:
cd frosted
Generate the Dart bindings:
flutter_rust_bridge_codegen generate --watch
Run the Flutter application:
flutter run
Usage
The application demonstrates a seedless wallet scenario:
- Generate key shards using the Generate Keys button. In a real scenario, the developer must ensure the security of the key shards.
- Select which key shards will be used for signing.
- Sign a message and verify the signature. The signature is encoded in
base64
. It is verified using both a Rust and a Dart based implementation.
Key shards security โ
A secure management of key shards is not implemented. The developer must ensure that all key shards are encrypted and securely stored, and be fully protected against unauthorized access or malicious actors.
Contributing
Contributions are welcome! Feel free to open issues or submit pull requests.
License
This project is licensed under MIT License - see the LICENSE file for details.
Acknowledgments
Thanks to the Zcash Foundation for the FROST library.
Gratitude to the flutter_rust_bridge
team for their excellent tool.