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Remove unnecessary mut in PodSigner trait (#340)

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The PodSigner trait was taking `&mut self` in the `sign` method, but the
signer doesn't need mutation in the Shcnorr implementation.  Remove the
`mut`.

Previously the PodProver trait was also taking `&mut self` in the
`prove` method, and we had many tests creating a `mut Prover/mut
MockProver`.  Remove all those `mut`.

Breaking change: `PodSigner` trait method `sign` replaces `&mut self` by
`&self`
This commit is contained in:
Eduard S. 2025-07-15 17:37:26 +02:00 • committed by GitHub
parent b5e0d97cb6
commit 63a716ebd7
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GPG key ID: B5690EEEBB952194
11 changed files with 136 additions and 146 deletions
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66
src/backends/plonky2/mainpod/mod.rs
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@ -739,12 +739,12 @@ pub mod tests {
let (gov_id_builder, pay_stub_builder, sanction_list_builder) =
zu_kyc_sign_pod_builders(&params);
let mut signer = Signer(SecretKey(BigUint::one()));
let gov_id_pod = gov_id_builder.sign(&mut signer)?;
let mut signer = Signer(SecretKey(2u64.into()));
let pay_stub_pod = pay_stub_builder.sign(&mut signer)?;
let mut signer = Signer(SecretKey(3u64.into()));
let sanction_list_pod = sanction_list_builder.sign(&mut signer)?;
let signer = Signer(SecretKey(BigUint::one()));
let gov_id_pod = gov_id_builder.sign(&signer)?;
let signer = Signer(SecretKey(2u64.into()));
let pay_stub_pod = pay_stub_builder.sign(&signer)?;
let signer = Signer(SecretKey(3u64.into()));
let sanction_list_pod = sanction_list_builder.sign(&signer)?;
let kyc_builder = zu_kyc_pod_builder(
&params,
&vd_set,
@ -753,8 +753,8 @@ pub mod tests {
&sanction_list_pod,
)?;
let mut prover = Prover {};
let kyc_pod = kyc_builder.prove(&mut prover, &params)?;
let prover = Prover {};
let kyc_pod = kyc_builder.prove(&prover, &params)?;
crate::measure_gates_print!();
let pod = (kyc_pod.pod as Box<dyn Any>).downcast::<MainPod>().unwrap();
@ -778,8 +778,8 @@ pub mod tests {
gov_id_builder.insert("idNumber", "4242424242");
gov_id_builder.insert("dateOfBirth", 1169909384);
gov_id_builder.insert("socialSecurityNumber", "G2121210");
let mut signer = Signer(SecretKey(42u64.into()));
let gov_id = gov_id_builder.sign(&mut signer).unwrap();
let signer = Signer(SecretKey(42u64.into()));
let gov_id = gov_id_builder.sign(&signer).unwrap();
let now_minus_18y: i64 = 1169909388;
let mut kyc_builder = frontend::MainPodBuilder::new(&params, &vd_set);
kyc_builder.add_signed_pod(&gov_id);
@ -791,8 +791,8 @@ pub mod tests {
println!();
// Mock
let mut prover = MockProver {};
let kyc_pod = kyc_builder.prove(&mut prover, &params).unwrap();
let prover = MockProver {};
let kyc_pod = kyc_builder.prove(&prover, &params).unwrap();
let pod = (kyc_pod.pod as Box<dyn Any>)
.downcast::<MockMainPod>()
.unwrap();
@ -800,8 +800,8 @@ pub mod tests {
println!("{:#}", pod);
// Real
let mut prover = Prover {};
let kyc_pod = kyc_builder.prove(&mut prover, &params).unwrap();
let prover = Prover {};
let kyc_pod = kyc_builder.prove(&prover, &params).unwrap();
let pod = (kyc_pod.pod as Box<dyn Any>).downcast::<MainPod>().unwrap();
pod.verify().unwrap()
}
@ -832,8 +832,8 @@ pub mod tests {
let pod_builder = frontend::MainPodBuilder::new(&params, &vd_set);
// Mock
let mut prover = MockProver {};
let kyc_pod = pod_builder.prove(&mut prover, &params).unwrap();
let prover = MockProver {};
let kyc_pod = pod_builder.prove(&prover, &params).unwrap();
let pod = (kyc_pod.pod as Box<dyn Any>)
.downcast::<MockMainPod>()
.unwrap();
@ -841,8 +841,8 @@ pub mod tests {
println!("{:#}", pod);
// Real
let mut prover = Prover {};
let kyc_pod = pod_builder.prove(&mut prover, &params).unwrap();
let prover = Prover {};
let kyc_pod = pod_builder.prove(&prover, &params).unwrap();
let pod = (kyc_pod.pod as Box<dyn Any>).downcast::<MainPod>().unwrap();
pod.verify().unwrap()
}
@ -853,27 +853,23 @@ pub mod tests {
println!("{:#?}", params);
let vd_set = &*DEFAULT_VD_SET;
let mut alice = Signer(SecretKey(1u32.into()));
let mut bob = Signer(SecretKey(2u32.into()));
let alice = Signer(SecretKey(1u32.into()));
let bob = Signer(SecretKey(2u32.into()));
let charlie = Signer(SecretKey(3u32.into()));
// Alice attests that she is ETH friends with Bob and Bob
// attests that he is ETH friends with Charlie.
let alice_attestation =
attest_eth_friend(&params, &mut alice, Value::from(bob.public_key()));
let bob_attestation =
attest_eth_friend(&params, &mut bob, Value::from(charlie.public_key()));
let alice_attestation = attest_eth_friend(&params, &alice, Value::from(bob.public_key()));
let bob_attestation = attest_eth_friend(&params, &bob, Value::from(charlie.public_key()));
let helper = EthDosHelper::new(&params, vd_set, false, Value::from(alice.public_key()))?;
let mut prover = Prover {};
let dist_1 = helper
.dist_1(&alice_attestation)?
.prove(&mut prover, &params)?;
let prover = Prover {};
let dist_1 = helper.dist_1(&alice_attestation)?.prove(&prover, &params)?;
crate::measure_gates_print!();
dist_1.pod.verify()?;
let dist_2 = helper
.dist_n_plus_1(&dist_1, &bob_attestation)?
.prove(&mut prover, &params)?;
.prove(&prover, &params)?;
Ok(dist_2.pod.verify()?)
}
@ -920,12 +916,12 @@ pub mod tests {
let _st3 = pod_builder.priv_op(op!(custom, cpb_and.clone(), st0, st2))?;
let mut prover = MockProver {};
let pod = pod_builder.prove(&mut prover, &params)?;
let prover = MockProver {};
let pod = pod_builder.prove(&prover, &params)?;
assert!(pod.pod.verify().is_ok());
let mut prover = Prover {};
let pod = pod_builder.prove(&mut prover, &params)?;
let prover = Prover {};
let pod = pod_builder.prove(&prover, &params)?;
crate::measure_gates_print!();
let pod = (pod.pod as Box<dyn Any>).downcast::<MainPod>().unwrap();
@ -948,8 +944,8 @@ pub mod tests {
builder.pub_op(op!(set_contains, st, 1))?;
let mut prover = Prover {};
let proof = builder.prove(&mut prover, &params).unwrap();
let prover = Prover {};
let proof = builder.prove(&prover, &params).unwrap();
let pod = (proof.pod as Box<dyn Any>).downcast::<MainPod>().unwrap();
Ok(pod.verify()?)
}