From fd36b40babb843f52938559cd71f66f04f3d9796 Mon Sep 17 00:00:00 2001
From: Danny Willems <be.danny.willems@gmail.com>
Date: Thu, 17 Oct 2024 17:14:02 +0200
Subject: [PATCH] Arrabiata/curve: define SPONGE_CONSTANTS for ArrabiataCurve

---
 arrabbiata/src/curve.rs | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/arrabbiata/src/curve.rs b/arrabbiata/src/curve.rs
index 5453dd298e..cc1a72b2c7 100644
--- a/arrabbiata/src/curve.rs
+++ b/arrabbiata/src/curve.rs
@@ -32,6 +32,13 @@ pub trait ArrabbiataCurve: CommitmentCurve + EndoCurve {
     /// A human readable name.
     const NAME: &'static str;
 
+    // FIXME: use this in the codebase.
+    // We might want to use different sponge constants for different curves.
+    // For now, it does use the same constants for both curves.
+    type SpongeConstants: SpongeConstants;
+
+    const SPONGE_CONSTANTS: Self::SpongeConstants;
+
     /// Provides the sponge params to be used with this curve.
     fn sponge_params() -> &'static ArithmeticSpongeParams<Self::ScalarField>;
 
@@ -50,6 +57,10 @@ pub trait ArrabbiataCurve: CommitmentCurve + EndoCurve {
 impl ArrabbiataCurve for Affine<PallasParameters> {
     const NAME: &'static str = "pallas";
 
+    type SpongeConstants = PlonkSpongeConstants;
+
+    const SPONGE_CONSTANTS: Self::SpongeConstants = PlonkSpongeConstants {};
+
     fn sponge_params() -> &'static ArithmeticSpongeParams<Self::ScalarField> {
         crate::poseidon_3_60_0_5_5_fq::static_params()
     }
@@ -70,6 +81,10 @@ impl ArrabbiataCurve for Affine<PallasParameters> {
 impl ArrabbiataCurve for Affine<VestaParameters> {
     const NAME: &'static str = "vesta";
 
+    type SpongeConstants = PlonkSpongeConstants;
+
+    const SPONGE_CONSTANTS: Self::SpongeConstants = PlonkSpongeConstants {};
+
     fn sponge_params() -> &'static ArithmeticSpongeParams<Self::ScalarField> {
         crate::poseidon_3_60_0_5_5_fp::static_params()
     }