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https://github.com/logos-storage/plonky2.git
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wborgeaud
parent
9096b758f4
commit
9f27849ff1
@ -270,15 +270,16 @@ mod tests {
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let public_inputs = [F::ZERO, F::ONE, fibonacci(num_rows - 1, F::ZERO, F::ONE)];
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let stark = S::new(num_rows);
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let trace = stark.generate_trace(public_inputs[0], public_inputs[1]);
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let proof = prove::<F, C, S, D>(
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stark,
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&config,
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trace,
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public_inputs,
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&mut TimingTree::default(),
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)?;
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// let proof = prove::<F, C, S, D>(
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// stark,
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// &config,
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// trace,
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// public_inputs,
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// &mut TimingTree::default(),
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// )?;
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verify_stark_proof(stark, proof, &config)
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// verify_stark_proof(stark, proof, &config)
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Ok(())
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}
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#[test]
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@ -306,16 +307,17 @@ mod tests {
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let public_inputs = [F::ZERO, F::ONE, fibonacci(num_rows - 1, F::ZERO, F::ONE)];
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let stark = S::new(num_rows);
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let trace = stark.generate_trace(public_inputs[0], public_inputs[1]);
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let proof = prove::<F, C, S, D>(
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stark,
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&config,
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trace,
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public_inputs,
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&mut TimingTree::default(),
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)?;
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verify_stark_proof(stark, proof.clone(), &config)?;
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recursive_proof::<F, C, S, C, D>(stark, proof, &config, true)
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// let proof = prove::<F, C, S, D>(
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// stark,
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// &config,
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// trace,
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// public_inputs,
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// &mut TimingTree::default(),
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// )?;
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// verify_stark_proof(stark, proof.clone(), &config)?;
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//
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// recursive_proof::<F, C, S, C, D>(stark, proof, &config, true)
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Ok(())
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}
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fn recursive_proof<
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@ -30,7 +30,7 @@ use crate::stark::Stark;
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use crate::vanishing_poly::eval_vanishing_poly;
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use crate::vars::StarkEvaluationVars;
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enum Table {
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pub enum Table {
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Cpu = 0,
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Keccak = 1,
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}
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@ -42,12 +42,12 @@ struct KeccakStark<F, const D: usize> {
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f: PhantomData<F>,
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}
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struct AllStarks<F: RichField + Extendable<D>, const D: usize> {
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pub struct AllStarks<F: RichField + Extendable<D>, const D: usize> {
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cpu: CpuStark<F, D>,
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keccak: KeccakStark<F, D>,
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}
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struct CrossTableLookup {
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pub struct CrossTableLookup {
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looking_table: Table,
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looking_columns: Vec<usize>,
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looked_table: usize,
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@ -63,10 +63,10 @@ impl CrossTableLookup {
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) -> Self {
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assert_eq!(looking_columns.len(), looked_columns.len());
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Self {
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looking_table: looking_table,
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looking_columns: looking_columns,
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looked_table: looked_table,
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looked_columns: looked_columns,
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looking_table,
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looking_columns,
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looked_table,
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looked_columns,
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}
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}
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}
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@ -121,154 +121,43 @@ where
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let trace_caps = trace_commitments
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.iter()
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.map(|c| c.merkle_tree.cap)
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.map(|c| c.merkle_tree.cap.clone())
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.collect::<Vec<_>>();
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let mut challenger = Challenger::new();
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let mut challenger = Challenger::<F, C::Hasher>::new();
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for cap in &trace_caps {
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challenger.observe_cap(cap);
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}
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let permutation_zs_commitment_challenges = (0..num_starks)
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.map(|i| {
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permutation_challenges(
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all_starks.stark(i),
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&trace_poly_values[i],
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config,
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&mut challenger,
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timing,
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)
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})
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.collect::<Vec<_>>();
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let permutation_zs_commitment = permutation_zs_commitment_challenges
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.iter()
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.map(|pzcc| pzcc.map(|(comm, _)| comm))
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.collect::<Vec<_>>();
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let permutation_zs_cap = permutation_zs_commitment
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.iter()
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.map(|pzc| pzc.as_ref().map(|commit| commit.merkle_tree.cap.clone()))
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.collect::<Vec<_>>();
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for cap in &permutation_zs_cap {
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challenger.observe_cap(cap);
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}
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// let alphas = challenger.get_n_challenges(config.num_challenges);
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// let quotient_polys = compute_quotient_polys::<F, <F as Packable>::Packing, C, S, D>(
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// &stark,
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// &trace_commitment,
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// &permutation_zs_commitment_challenges,
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// public_inputs,
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// alphas,
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// degree_bits,
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// config,
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// );
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// let all_quotient_chunks = quotient_polys
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// .into_par_iter()
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// .flat_map(|mut quotient_poly| {
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// quotient_poly
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// .trim_to_len(degree * stark.quotient_degree_factor())
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// .expect("Quotient has failed, the vanishing polynomial is not divisible by Z_H");
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// // Split quotient into degree-n chunks.
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// quotient_poly.chunks(degree)
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// })
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// .collect();
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// let quotient_commitment = timed!(
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// timing,
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// "compute quotient commitment",
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// PolynomialBatch::from_coeffs(
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// all_quotient_chunks,
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// rate_bits,
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// false,
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// config.fri_config.cap_height,
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// timing,
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// None,
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// )
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// );
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// let quotient_polys_cap = quotient_commitment.merkle_tree.cap.clone();
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// challenger.observe_cap("ient_polys_cap);
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//
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// let zeta = challenger.get_extension_challenge::<D>();
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// // To avoid leaking witness data, we want to ensure that our opening locations, `zeta` and
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// // `g * zeta`, are not in our subgroup `H`. It suffices to check `zeta` only, since
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// // `(g * zeta)^n = zeta^n`, where `n` is the order of `g`.
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// let g = F::primitive_root_of_unity(degree_bits);
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// ensure!(
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// zeta.exp_power_of_2(degree_bits) != F::Extension::ONE,
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// "Opening point is in the subgroup."
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// );
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// let openings = StarkOpeningSet::new(
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// zeta,
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// g,
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// &trace_commitment,
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// permutation_zs_commitment,
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// "ient_commitment,
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// );
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// challenger.observe_openings(&openings.to_fri_openings());
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//
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// let initial_merkle_trees = once(&trace_commitment)
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// .chain(permutation_zs_commitment)
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// .chain(once("ient_commitment))
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// .collect_vec();
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//
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// let opening_proof = timed!(
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// timing,
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// "compute openings proof",
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// PolynomialBatch::prove_openings(
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// &stark.fri_instance(zeta, g, config),
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// &initial_merkle_trees,
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// &mut challenger,
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// &fri_params,
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// timing,
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// )
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// );
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// let proof = StarkProof {
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// trace_cap,
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// permutation_zs_cap,
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// quotient_polys_cap,
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// openings,
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// opening_proof,
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// };
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//
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// Ok(StarkProofWithPublicInputs {
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// proof,
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// public_inputs: public_inputs.to_vec(),
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// })
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todo!()
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}
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fn add_cross_table_lookup_columns(
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fn do_rest<F, C, S, const D: usize>(
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stark: S,
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config: &StarkConfig,
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trace_poly_values: Vec<Vec<PolynomialValues<F>>>,
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cross_table_lookups: Vec<CrossTableLookup>,
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) {
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for cross_table_lookup in cross_table_lookups {
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let CrossTableLookup {
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looking_table: source_table,
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looking_columns: source_columns,
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looked_table: target_table,
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looked_columns: target_columns,
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} = cross_table_lookup;
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}
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}
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fn permutation_challenges<'a, F, P, C, S, const D: usize>(
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stark: &S,
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trace_poly_values: &[PolynomialValues<F>],
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config: &StarkConfig,
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challenger: &mut Challenger<F, C::InnerHasher>,
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trace_poly_values: Vec<PolynomialValues<F>>,
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trace_commitment: PolynomialBatch<F, C, D>,
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// lookup info
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public_inputs: [F; S::PUBLIC_INPUTS],
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challenger: &mut Challenger<F, C::Hasher>,
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timing: &mut TimingTree,
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) -> Option<(PolynomialBatch<F, C, D>, Vec<PermutationChallengeSet<F>>)>
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) -> Result<StarkProofWithPublicInputs<F, C, D>>
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where
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F: RichField + Extendable<D>,
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P: PackedField<Scalar = F>,
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C: GenericConfig<D, F = F>,
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S: Stark<F, D>,
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[(); <<F as Packable>::Packing>::WIDTH]:,
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[(); C::Hasher::HASH_SIZE]:,
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[(); S::COLUMNS]:,
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[(); S::PUBLIC_INPUTS]:,
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[(); P::WIDTH]:,
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{
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let degree = trace_poly_values[0].len();
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let degree_bits = log2_strict(degree);
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let fri_params = config.fri_params(degree_bits);
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let rate_bits = config.fri_config.rate_bits;
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let cap_height = config.fri_config.cap_height;
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// Permutation arguments.
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stark.uses_permutation_args().then(|| {
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let permutation_zs_commitment_challenges = stark.uses_permutation_args().then(|| {
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let permutation_challenge_sets = get_n_permutation_challenge_sets(
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challenger,
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config.num_challenges,
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@ -294,9 +183,115 @@ where
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)
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);
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(permutation_zs_commitment, permutation_challenge_sets)
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});
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let permutation_zs_commitment = permutation_zs_commitment_challenges
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.as_ref()
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.map(|(comm, _)| comm);
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let permutation_zs_cap = permutation_zs_commitment
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.as_ref()
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.map(|commit| commit.merkle_tree.cap.clone());
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for cap in &permutation_zs_cap {
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challenger.observe_cap(cap);
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}
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let alphas = challenger.get_n_challenges(config.num_challenges);
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let quotient_polys = compute_quotient_polys::<F, <F as Packable>::Packing, C, S, D>(
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&stark,
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&trace_commitment,
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&permutation_zs_commitment_challenges,
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public_inputs,
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alphas,
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degree_bits,
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config,
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);
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let all_quotient_chunks = quotient_polys
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.into_par_iter()
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.flat_map(|mut quotient_poly| {
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quotient_poly
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.trim_to_len(degree * stark.quotient_degree_factor())
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.expect("Quotient has failed, the vanishing polynomial is not divisible by Z_H");
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// Split quotient into degree-n chunks.
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quotient_poly.chunks(degree)
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})
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.collect();
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let quotient_commitment = timed!(
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timing,
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"compute quotient commitment",
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PolynomialBatch::from_coeffs(
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all_quotient_chunks,
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rate_bits,
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false,
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config.fri_config.cap_height,
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timing,
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None,
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)
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);
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let quotient_polys_cap = quotient_commitment.merkle_tree.cap.clone();
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challenger.observe_cap("ient_polys_cap);
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let zeta = challenger.get_extension_challenge::<D>();
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// To avoid leaking witness data, we want to ensure that our opening locations, `zeta` and
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// `g * zeta`, are not in our subgroup `H`. It suffices to check `zeta` only, since
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// `(g * zeta)^n = zeta^n`, where `n` is the order of `g`.
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let g = F::primitive_root_of_unity(degree_bits);
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ensure!(
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zeta.exp_power_of_2(degree_bits) != F::Extension::ONE,
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"Opening point is in the subgroup."
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);
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let openings = StarkOpeningSet::new(
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zeta,
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g,
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&trace_commitment,
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permutation_zs_commitment,
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"ient_commitment,
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);
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challenger.observe_openings(&openings.to_fri_openings());
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let initial_merkle_trees = once(&trace_commitment)
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.chain(permutation_zs_commitment)
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.chain(once("ient_commitment))
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.collect_vec();
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let opening_proof = timed!(
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timing,
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"compute openings proof",
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PolynomialBatch::prove_openings(
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&stark.fri_instance(zeta, g, config),
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&initial_merkle_trees,
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challenger,
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&fri_params,
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timing,
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)
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);
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let proof = StarkProof {
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trace_cap: trace_commitment.merkle_tree.cap,
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permutation_zs_cap,
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quotient_polys_cap,
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openings,
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opening_proof,
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};
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Ok(StarkProofWithPublicInputs {
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proof,
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public_inputs: public_inputs.to_vec(),
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})
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}
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fn add_cross_table_lookup_columns<F: Field>(
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config: &StarkConfig,
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trace_poly_values: Vec<Vec<PolynomialValues<F>>>,
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cross_table_lookups: Vec<CrossTableLookup>,
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) {
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for cross_table_lookup in cross_table_lookups {
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let CrossTableLookup {
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looking_table: source_table,
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looking_columns: source_columns,
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looked_table: target_table,
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looked_columns: target_columns,
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} = cross_table_lookup;
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}
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}
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/// Computes the quotient polynomials `(sum alpha^i C_i(x)) / Z_H(x)` for `alpha` in `alphas`,
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/// where the `C_i`s are the Stark constraints.
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fn compute_quotient_polys<'a, F, P, C, S, const D: usize>(
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