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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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5
src/backends/plonky2/error.rs
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@ -10,6 +10,8 @@ pub enum InnerError {
IdNotEqual(PodId, PodId),
#[error("type does not match, expected {0}, found {1}")]
TypeNotEqual(PodType, Value),
#[error("signer public key does not match, expected {0}, found {1}")]
SignerNotEqual(Value, Value),
// POD related
#[error("invalid POD ID")]
@ -90,4 +92,7 @@ impl Error {
pub fn type_not_equal(expected: PodType, found: Value) -> Self {
new!(TypeNotEqual(expected, found))
}
pub(crate) fn signer_not_equal(expected: Value, found: Value) -> Self {
new!(SignerNotEqual(expected, found))
}
}