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Add an Absorb trait bound to PCCommitment #144

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Description

Following Option 2 from #143.

closes: #143


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@mmagician mmagician requested a review from a team as a code owner February 6, 2024 12:27
@mmagician mmagician requested review from z-tech, Pratyush and weikengchen and removed request for a team February 6, 2024 12:27
Cargo.toml Outdated Show resolved Hide resolved
Comment on lines +328 to +334
pub struct Commitment<E>(
/// The commitment is a group element.
pub E::G1Affine,
);
)
where
E: Pairing,
E::G1Affine: Absorb;
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Technically, we don't need an Absorb bound on E::G1Affine, only on the PCCommitment impl and on the Absorb impl, right?

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That would avoid most of this churn I think

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If I restrict PCCommitment: Absorb, then I also have to ensure any struct which implements PCCommitment also implements Absorb - and so I need to restrict E::G1Affine etc. to also be Absorb.
Let me know if you have another idea for this, I currently can't see a better workaround.

@@ -178,7 +179,7 @@ impl<'a, F: Field, P: Polynomial<F>> LabeledPolynomial<F, P> {
}

/// A commitment along with information about its degree bound (if any).
#[derive(Clone)]
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@Pratyush If I'm not deriving Absorb, what about the degree_bound? I would assume this doesn't need to get absorbed.

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Add Absorb trait bound on PCCommitment
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