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Verify in-circuit returns a bool instead of constraining now

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This commit is contained in:
Brian Lawrence
2024-09-30 15:34:14 -07:00
parent 5a8593a39c
commit 2776bd431e
1 changed files with 17 additions and 3 deletions
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20
src/schnorr_prover.rs
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@@ -1,7 +1,7 @@
use anyhow::Result; use anyhow::Result;
use plonky2::iop::{ use plonky2::iop::{
target::Target, target::{BoolTarget, Target},
witness::{PartialWitness, WitnessWrite}, witness::{PartialWitness, WitnessWrite},
}; };
use plonky2::field::{ use plonky2::field::{
@@ -88,6 +88,20 @@ impl SchnorrBuilder {
msg: &MessageTarget, msg: &MessageTarget,
pk: &SchnorrPublicKeyTarget, pk: &SchnorrPublicKeyTarget,
) -> () { ) -> () {
let verification_output = self.verify_sig::<C>(builder, sig, msg, pk);
let true_target = builder._true();
builder.connect(verification_output.target, true_target.target);
}
pub fn verify_sig <
C: GenericConfig<2, F = GoldF>,
> (
&self,
builder: &mut CircuitBuilder::<GoldF, 2>,
sig: &SchnorrSignatureTarget,
msg: &MessageTarget,
pk: &SchnorrPublicKeyTarget,
) -> BoolTarget {
let PRIME_GROUP_GEN: Target = builder.constant(GoldF::from_canonical_u64(6612579038192137166)); let PRIME_GROUP_GEN: Target = builder.constant(GoldF::from_canonical_u64(6612579038192137166));
let PRIME_GROUP_ORDER: Target = builder.constant(GoldF::from_canonical_u64(65537)); let PRIME_GROUP_ORDER: Target = builder.constant(GoldF::from_canonical_u64(65537));
const num_bits_exp: usize = 32; const num_bits_exp: usize = 32;
@@ -114,8 +128,8 @@ impl SchnorrBuilder {
let e: Target = Mod65537Builder::mod_65537(builder, hash_output); let e: Target = Mod65537Builder::mod_65537(builder, hash_output);
// enforce equality // test equality
builder.connect(e, sig.e); builder.is_equal(e, sig.e)
} }
} }