Function finalize 

pub fn finalize(
    input: &[u8],
    info: &[u8],
    state: &BlindState,
    blinded: &[u8; 33],
    evaluated: &[u8; 33],
    proof: Option<&[u8; 64]>,
) -> Result<[u8; 32]>

Finish one evaluation; see finalize_batch.