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feat(backend): Use Schnorr signatures for signed PODs (#236)

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* Implement non-native extension field arithmetic

* Schnorr signature verification (#221)

* Use Schnorr signatures for signed PODs

* add custom gates (#237)

* Clippy

* Formatting

* Apply suggestions from code review

Co-authored-by: Eduard S. <eduardsanou@posteo.net>

* Fix typo

* Fix tests

* Point -> PublicKey

* Remove default nnf_div implementation for clarity

* Code review & edits for clarity

* Remove suspicious mutation

* Simplify computation

* Fix division

* Fix

* Update src/backends/plonky2/primitives/ec/curve.rs

Co-authored-by: Eduard S. <eduardsanou@posteo.net>

* Update src/backends/plonky2/primitives/ec/curve.rs

Co-authored-by: Eduard S. <eduardsanou@posteo.net>

* Fixes

* Add public key to signed POD struct

* Style

* Elaborate on in-circuit field->biguint conversion

* Add missing gates

* Comments

* Add bits to biguint struct

* Comments

* Comment

---------

Co-authored-by: Daniel Gulotta <dgulotta@alum.mit.edu>
Co-authored-by: Eduard S. <eduardsanou@posteo.net>
This commit is contained in:
Ahmad Afuni 2025-06-10 00:24:16 +10:00 • committed by GitHub
parent 541c264586
commit c66506c048
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
22 changed files with 2995 additions and 456 deletions
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10
src/frontend/mod.rs
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@ -844,13 +844,9 @@ pub mod tests {
// Check that frontend public statements agree with those
// embedded in a MainPod.
fn check_public_statements(pod: &MainPod) -> Result<()> {
Ok(
std::iter::zip(pod.public_statements.clone(), pod.pod.pub_statements()).try_for_each(
|(fes, s)| {
crate::middleware::Statement::try_from(fes).map(|fes| assert_eq!(fes, s))
},
)?,
)
std::iter::zip(pod.public_statements.clone(), pod.pod.pub_statements())
.for_each(|(fes, s)| assert_eq!(fes, s));
Ok(())
}
// Check that frontend key-values agree with those embedded in a