pub fn combine_lo_hi_commitments(
comm_lo: &PedersenCommitment,
comm_hi: &PedersenCommitment,
bit_length: usize,
) -> PedersenCommitment
pub fn combine_lo_hi_commitments(
comm_lo: &PedersenCommitment,
comm_hi: &PedersenCommitment,
bit_length: usize,
) -> PedersenCommitment