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Onchain decider circuit for Protogalaxy (#145)

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* Move r1cs and ccs to standalone folders

* Simplify type bounds of SparseMatrixVar

* Implement `EquivalenceGadget` trait for `FpVar` and `NonNativeUintVar`.

Together with the existing `MatrixGadget` and `VectorGadget`, we can now use the same logic for checking R1CS satisfiability of `R1CSVar` both natively and non-natively.

* Simplify trait bounds

* Implement `ArithGadget` for `R1CSMatricesVar` and `CCSMatricesVar`

* `PedersenGadget::commit` now takes slices as input

* Structs for proofs and auxiliary values in protogalaxy

* `u` in LCCCS should be `z[0]`

* `Inputize` trait

* Generic decider circuits

* Verifier should check the commitments in committed instances

* Update the comments according to the new docs

* Fix examples

* Add `DeciderEnabledNIFS::fold_group_elements_native` to wrap code for folding commitments

* Fix incorrect endian

* Format

* Get rid of `unwrap` when possible
This commit is contained in:
winderica
2024-11-04 17:34:50 +08:00
committed by GitHub
parent 6d8f297f11
commit b812dd66df
46 changed files with 2735 additions and 2408 deletions
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33
folding-schemes/src/folding/nova/traits.rs
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@@ -1,11 +1,18 @@
use ark_ec::CurveGroup;
use ark_r1cs_std::fields::fp::FpVar;
use ark_relations::r1cs::SynthesisError;
use ark_std::{rand::RngCore, UniformRand};
use super::circuits::CommittedInstanceVar;
use super::decider_eth_circuit::WitnessVar;
use super::{CommittedInstance, Witness};
use crate::arith::ArithSampler;
use crate::arith::{r1cs::R1CS, Arith};
use crate::arith::{
r1cs::{circuits::R1CSMatricesVar, R1CS},
Arith, ArithGadget, ArithSampler,
};
use crate::commitment::CommitmentScheme;
use crate::folding::circuits::CF1;
use crate::utils::gadgets::{EquivalenceGadget, VectorGadget};
use crate::Error;
/// Implements `Arith` for R1CS, where the witness is of type [`Witness`], and
@@ -95,3 +102,25 @@ impl<C: CurveGroup> ArithSampler<C, Witness<C>, CommittedInstance<C>> for R1CS<C
Ok((witness, cm_witness))
}
}
impl<C: CurveGroup> ArithGadget<WitnessVar<C>, CommittedInstanceVar<C>>
for R1CSMatricesVar<C::ScalarField, FpVar<C::ScalarField>>
{
type Evaluation = (Vec<FpVar<C::ScalarField>>, Vec<FpVar<C::ScalarField>>);
fn eval_relation(
&self,
w: &WitnessVar<C>,
u: &CommittedInstanceVar<C>,
) -> Result<Self::Evaluation, SynthesisError> {
self.eval_at_z(&[&[u.u.clone()][..], &u.x, &w.W].concat())
}
fn enforce_evaluation(
w: &WitnessVar<C>,
_u: &CommittedInstanceVar<C>,
(AzBz, uCz): Self::Evaluation,
) -> Result<(), SynthesisError> {
EquivalenceGadget::<C::ScalarField>::enforce_equivalent(&AzBz[..], &uCz.add(&w.E)?[..])
}
}