commit-groth09

A multiplicatively homomorphic commitment scheme, as described in Homomorphic Trapdoor Commitments to Group Elements, implemented using BLS12-381.

Basic usage

Note: committing to bytes is not yet implemented!

fn commit_to_value() -> (Commitment, Randomness) {
    let commitment_key = CommitmentKey::<1>::generate();
    let value = Values::new([G2Affine::generator()]);
    let (commitment, randomness) = commitment_key.commit(&value);
}

lib.rs:

Homomorphic Trapdoor Commitments to Group Elements as described by Jens Groth.

This implementation uses BLS12-381 for the groups and pairing.