BEEFY needs two cryptographic keys at the same time. Validators should sign BEEFY payload using both ECDSA and BLS key. The network will gossip a payload which contains a valid ECDSA key. The prover nodes aggregate the BLS keys if aggregation fails to verifies the validator which provided a valid ECDSA signature but an invalid BLS signature is subject to slashing. As such BEEFY session should be initiated with both key. Currently there is no straight forward way of doing so, beside having a session with RuntimeApp corresponding to a crypto scheme contains both keys. This pull request implement a generic paired_crypto scheme as well as implementing it for (ECDSA, BLS) pair. --------- Co-authored-by: Davide Galassi <davxy@datawok.net> Co-authored-by: Robert Hambrock <roberthambrock@gmail.com>
Substrate
Substrate is a next-generation framework for blockchain innovation 🚀.
Getting Started
Head to docs.substrate.io and follow the installation
instructions. Then try out one of the tutorials. Refer to the Docker
instructions to quickly run Substrate, Substrate Node Template, Subkey, or to build a chain spec.
Community & Support
Join the highly active and supportive community on the Substrate Stack Exchange to ask questions about use and problems you run into using this software. Please do report bugs and issues here for anything you suspect requires action in the source.
Contributions & Code of Conduct
Please follow the contributions guidelines as outlined in
docs/CONTRIBUTING.md. In all
communications and contributions, this project follows the Contributor Covenant Code of
Conduct.
Security
The security policy and procedures can be found in
docs/SECURITY.md.
License
- Substrate Primitives (
sp-*), Frame (frame-*) and the pallets (pallets-*), binaries (/bin) and all other utilities are licensed under Apache 2.0. - Substrate Client (/client/*/sc-*) is licensed under GPL v3.0 with a classpath linking exception.
The reason for the split-licensing is to ensure that for the vast majority of teams using Substrate to create feature-chains, then all changes can be made entirely in Apache2-licensed code, allowing teams full freedom over what and how they release and giving licensing clarity to commercial teams.
In the interests of the community, we require any deeper improvements made to Substrate's core logic (e.g. Substrate's internal consensus, crypto or database code) to be contributed back so everyone can benefit.
