Corona

This is a pure Golang implementation of Corona eprint.iacr.org/2024/1113, a practical two-round threshold signature scheme from LWE, optimized for integration with the Lux Network consensus protocol.

Version: v0.1.0

Status: This implementation has been enhanced for production use with the Lux Network, including improved error handling, configuration management, and consensus integration support. However, it should still undergo thorough security auditing before mainnet deployment.

Codebase Overview

networking/
- networking.go: Includes the networking stack which allows signers to form peer-to-peer network connections with other parties. Each party concurrently communicates with every other party by serializing and sending its messages through outgoing TCP sockets, while simultaneously receiving and processing incoming messages.
primitives/
- hash.go: Hashes, MACs, PRFs involved in the scheme.
- shamir.go: Shamir secret-sharing for secret key vector.
sign/
- config.go: Parameters for concrete instantiation.
- local.go: Locally runs the scheme on a single machine for a given number of parties.
- sign.go: Core functionality of the scheme.
utils/
- utils.go: Helpers related to NTT and Montgomery conversions, multiplying, and initializing matrices and vectors of ring elements.
- utils-naive.go: This is note used in the current version, but can be used for testing. It implements convolution-based naive ring-element multiplication.
main.go: Run the code with go run main.go id iters parties where id is the party ID of the signer running the code (use l if you want to run the scheme locally), iters is the number of iterations to average the latencies over if you are benchmarking (if not, just use 1), and parties is the total number of parties. This is currently a full-threshold implementation. For testing a smaller threshold, set the Threshold config parameter with a different value, and use ShamirSecretSharingGeneral.

License

Corona is licensed under the Apache 2.0 License. See LICENSE.