LNP/BP Library

The repository represents a set of libraries implementing LNP/BP specifications https://github.com/LNP-BP/LNPBPs not fitting into a scope of other existing LNP/BP core libraries (client-side-validation, BP, LNP, RGB, invoicing). It can be used to simplify development of layer 2 & 3 solutions on top of Lightning Network and Bitcoin blockchain.

Currently, the repository contains the following crates:

• lnpbp_bech32: library implementing LNPBP-14 standard of Bech32 encoding for client-side-validated data.
• lnpbp_chain: library providing chain parameters for bitcoin-related blockchains;
• lnpbp_elgamal: library implementing LNPBP-31 standard for ElGamal encryption using Secp256k1 curve;
• LNPBP umbrella crate containing all aforementioned libraries.

Other libraries, implementing LNP/BP specifications, not included in this crate:

• Client-side-validation foundation libraries (client_side_validation)
• Bitcoin protocol core library (bp-core)
• Lightning network protocol core library (lnp-core)
• RGB core library implementing confidential & scalable smart contracts for Bitcoin & Lightning (rgb-core)
• Universal invoicing library

The current list of the projects based on these libraries include:

• RGB Node
• LNP Node enabling:
  • RGB extensions
  • DLC extensions
  • Lightspeed payments
  • Multi-peer channels
  • Faster lightning experiments (quicker adoption of eltoo, Taproot etc)
• BP Node: Indexing service for bitcoin blockchain; more efficient & universal Electrum server replacement. In perspective - validating Bitcoin network node (using libbitcoinconsus)

Potentially, with LNP/BP libraries you can simplify the development of

• Discreet log contracts
• Implement experimental lightning features
• Do complex multi-threaded or elastic/dockerized client-service microservice architectures

The development of the libraries is supported by LNP/BP Standards Association.

Install

Clone and compile library

Minimum supported rust compiler version (MSRV): 1.59.0.

git clone https://github.com/lnp-bp/rust-lnpbp
cd rust-lnpbp
cargo build --release --all-features

The library can be found in target/release directory.

You can run full test suite with:

cargo test --workspace --all-features

Please refer to the cargo documentation for more detailed instructions.

Use library in other projects

Add these lines to your Cargo.toml file at the very end of the [dependecies] section:

lnpbp = "~0.5.0"
lnpbp_bech32 = "~0.5.0"
lnpbp_chain = "~0.5.0"
lnpbp_elgamal = "~0.5.0"

Contributing

Contribution guidelines can be found in a separate CONTRIBUTING file

More information

Policy on Altcoins/Altchains

Altcoins and "blockchains" other than Bitcoin blockchain/Bitcoin protocols are not supported and not planned to be supported; pull requests targeting them will be declined.

Licensing

See LICENCE file.

lib.rs:

ElGamal encryption scheme with SECP256k1 curve. According to https://crypto.stackexchange.com/a/45042