mirror of https://github.com/zcash/halo2.git
Remove query allocations from Proof::verify
multiopen::Proof::verify takes `queries: IntoIterator`, so we can just pass it an iterator directly.
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7f29ab913d
commit
6360da1f4e
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@ -1,3 +1,5 @@
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use std::iter;
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use super::{Error, Proof, VerifyingKey};
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use crate::arithmetic::{get_challenge_scalar, Challenge, CurveAffine, Field};
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use crate::poly::{
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@ -69,6 +71,7 @@ impl<'a, C: CurveAffine> Proof<C> {
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// Sample x_3 challenge, which is used to ensure the circuit is
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// satisfied with high probability.
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let x_3: C::Scalar = get_challenge_scalar(Challenge(transcript.squeeze().get_lower_128()));
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let x_3_inv = vk.domain.rotate_omega(x_3, Rotation(-1));
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// This check ensures the circuit is satisfied so long as the polynomial
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// commitments open to the correct values.
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@ -87,100 +90,100 @@ impl<'a, C: CurveAffine> Proof<C> {
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transcript.absorb_scalar(*eval);
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}
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let mut queries: Vec<VerifierQuery<'a, C>> = Vec::new();
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for (query_index, &(column, at)) in vk.cs.advice_queries.iter().enumerate() {
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let point = vk.domain.rotate_omega(x_3, at);
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queries.push(VerifierQuery {
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point,
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commitment: &self.advice_commitments[column.index()],
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eval: self.advice_evals[query_index],
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});
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}
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for (query_index, &(column, at)) in vk.cs.aux_queries.iter().enumerate() {
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let point = vk.domain.rotate_omega(x_3, at);
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queries.push(VerifierQuery {
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point,
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commitment: &aux_commitments[column.index()],
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eval: self.aux_evals[query_index],
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});
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}
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for (query_index, &(column, at)) in vk.cs.fixed_queries.iter().enumerate() {
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let point = vk.domain.rotate_omega(x_3, at);
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queries.push(VerifierQuery {
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point,
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commitment: &vk.fixed_commitments[column.index()],
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eval: self.fixed_evals[query_index],
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});
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}
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for ((idx, _), &eval) in self
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.h_commitments
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.iter()
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.enumerate()
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.zip(self.h_evals.iter())
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{
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let commitment = &self.h_commitments[idx];
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queries.push(VerifierQuery {
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point: x_3,
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commitment,
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eval,
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});
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}
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let queries =
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iter::empty()
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.chain(vk.cs.advice_queries.iter().enumerate().map(
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|(query_index, &(column, at))| VerifierQuery {
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point: vk.domain.rotate_omega(x_3, at),
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commitment: &self.advice_commitments[column.index()],
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eval: self.advice_evals[query_index],
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},
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))
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.chain(
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vk.cs
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.aux_queries
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.iter()
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.enumerate()
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.map(|(query_index, &(column, at))| VerifierQuery {
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point: vk.domain.rotate_omega(x_3, at),
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commitment: &aux_commitments[column.index()],
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eval: self.aux_evals[query_index],
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}),
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)
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.chain(vk.cs.fixed_queries.iter().enumerate().map(
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|(query_index, &(column, at))| VerifierQuery {
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point: vk.domain.rotate_omega(x_3, at),
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commitment: &vk.fixed_commitments[column.index()],
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eval: self.fixed_evals[query_index],
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},
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))
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.chain(
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self.h_commitments
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.iter()
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.enumerate()
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.zip(self.h_evals.iter())
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.map(|((idx, _), &eval)| VerifierQuery {
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point: x_3,
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commitment: &self.h_commitments[idx],
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eval,
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}),
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);
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// Handle permutation arguments, if any exist
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if !vk.cs.permutations.is_empty() {
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// Open permutation product commitments at x_3
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for ((idx, _), &eval) in self
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.permutation_product_commitments
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.iter()
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.enumerate()
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.zip(self.permutation_product_evals.iter())
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{
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let commitment = &self.permutation_product_commitments[idx];
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queries.push(VerifierQuery {
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point: x_3,
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commitment,
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eval,
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});
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}
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// Open permutation commitments for each permutation argument at x_3
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for outer_idx in 0..vk.permutation_commitments.len() {
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let inner_len = vk.permutation_commitments[outer_idx].len();
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for inner_idx in 0..inner_len {
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let commitment = &vk.permutation_commitments[outer_idx][inner_idx];
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let eval = self.permutation_evals[outer_idx][inner_idx];
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queries.push(VerifierQuery {
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point: x_3,
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commitment,
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eval,
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});
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}
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}
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// Open permutation product commitments at \omega^{-1} x_3
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let x_3_inv = vk.domain.rotate_omega(x_3, Rotation(-1));
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for ((idx, _), &eval) in self
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.permutation_product_commitments
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.iter()
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.enumerate()
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.zip(self.permutation_product_inv_evals.iter())
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{
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let commitment = &self.permutation_product_commitments[idx];
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queries.push(VerifierQuery {
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point: x_3_inv,
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commitment,
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eval,
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});
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}
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}
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let permutation_queries = if !vk.cs.permutations.is_empty() {
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Some(
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iter::empty()
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// Open permutation product commitments at x_3
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.chain(
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self.permutation_product_commitments
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.iter()
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.enumerate()
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.zip(self.permutation_product_evals.iter())
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.map(|((idx, _), &eval)| VerifierQuery {
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point: x_3,
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commitment: &self.permutation_product_commitments[idx],
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eval,
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}),
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)
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// Open permutation commitments for each permutation argument at x_3
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.chain(
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(0..vk.permutation_commitments.len())
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.map(|outer_idx| {
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let inner_len = vk.permutation_commitments[outer_idx].len();
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(0..inner_len).map(move |inner_idx| VerifierQuery {
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point: x_3,
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commitment: &vk.permutation_commitments[outer_idx][inner_idx],
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eval: self.permutation_evals[outer_idx][inner_idx],
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})
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})
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.flatten(),
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)
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// Open permutation product commitments at \omega^{-1} x_3
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.chain(
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self.permutation_product_commitments
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.iter()
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.enumerate()
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.zip(self.permutation_product_inv_evals.iter())
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.map(|((idx, _), &eval)| VerifierQuery {
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point: x_3_inv,
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commitment: &self.permutation_product_commitments[idx],
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eval,
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}),
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),
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)
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} else {
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None
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};
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// We are now convinced the circuit is satisfied so long as the
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// polynomial commitments open to the correct values.
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self.multiopening
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.verify(params, &mut transcript, queries, msm)
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.verify(
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params,
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&mut transcript,
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queries.chain(permutation_queries.into_iter().flatten()),
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msm,
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)
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.map_err(|_| Error::OpeningError)
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}
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