tofn: a cryptography library in Rust

Tofn provides the following:

• An implementation of ECDSA SECP256k1 signing scheme.
• An implementation of ED25519 signing scheme.

tofn is primarily used as part of tofnd for the Axelar network. For an older version of the library that included a threshold ECDSA implementation, see the section below on Threshold cryptography.

Setup

• Get the latest version of Rust stable.
• Clone this repo.
• Run cargo build to build the library.
• Run cargo test to run the tests.
• Run GOLDIE_UPDATE=1 cargo test to generate golden files for relevant tests.

Threshold cryptography

For an implementation of the GG20 threshold-ECDSA protocol, see this version of tofn. This GG20 protocol implementation should not be considered ready for production since it has known vulnerabilities against recently discovered attacks on the protocol implementation. This was removed from tofn as it is not being used in the Axelar protocol.

License

All crates licensed under either of

• Apache License, Version 2.0
• MIT license

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.