Most of the cryptographic libraries (Ed25519, Secp256k1, BLS12-381) used by Narhwal are now in fastcrypto.
This crate only contains the implementation of BLS12-377 backed by ark_bls12_377 crate. Note that this implementation is under the non-default conditional compilation feature celo, and is not compiled or linked without that explicit flag being passed in. The goal of this implementation is to provide an experimental benchmark, it is NOT meant as a production implementation.