BLS signature utility crate

This is a simple Rust crate which can be used to create and verify BLS signatures over the BLS12-381 curve. This follows the IETF draft for BLS signatures, using the "short signature" variation, where signatures are in G1 and public keys are in G2.

For historical reasons, this crate is named ic-verify-bls-signature, but it also supports signature generation.

lib.rs:

Verify BLS signatures

This verifies BLS signatures in a manner which is compatible with the Internet Computer.