diff --git a/src/curve/curve_summation.rs b/src/curve/curve_summation.rs
index ad4232ce..8f347eda 100644
--- a/src/curve/curve_summation.rs
+++ b/src/curve/curve_summation.rs
@@ -190,7 +190,7 @@ mod tests {
         affine_summation_batch_inversion, affine_summation_pairwise,
     };
     use crate::curve::curve_types::{Curve, ProjectivePoint};
-    use crate::curve::secp256k1_curve::Secp256K1;
+    use crate::curve::secp256k1::Secp256K1;
 
     #[test]
     fn test_pairwise_affine_summation() {
diff --git a/src/curve/mod.rs b/src/curve/mod.rs
index c65f2acd..6555404e 100644
--- a/src/curve/mod.rs
+++ b/src/curve/mod.rs
@@ -2,4 +2,4 @@ pub mod curve_adds;
 pub mod curve_multiplication;
 pub mod curve_summation;
 pub mod curve_types;
-pub mod secp256k1_curve;
+pub mod secp256k1;
diff --git a/src/curve/secp256k1_curve.rs b/src/curve/secp256k1.rs
similarity index 98%
rename from src/curve/secp256k1_curve.rs
rename to src/curve/secp256k1.rs
index 7b84855b..2fa476e1 100644
--- a/src/curve/secp256k1_curve.rs
+++ b/src/curve/secp256k1.rs
@@ -42,7 +42,7 @@ mod tests {
     use num::BigUint;
 
     use crate::curve::curve_types::{Curve, ProjectivePoint};
-    use crate::curve::secp256k1_curve::Secp256K1;
+    use crate::curve::secp256k1::Secp256K1;
     use crate::field::field_types::Field;
     use crate::field::secp256k1_scalar::Secp256K1Scalar;
 
diff --git a/src/gadgets/secp256k1.rs b/src/gadgets/curve.rs
similarity index 63%
rename from src/gadgets/secp256k1.rs
rename to src/gadgets/curve.rs
index 3294a954..83f73a3f 100644
--- a/src/gadgets/secp256k1.rs
+++ b/src/gadgets/curve.rs
@@ -51,6 +51,46 @@ impl<F: RichField + Extendable<D>, const D: usize> CircuitBuilder<F, D> {
 
         self.connect_nonnative(&y_squared, &rhs);
     }
+
+    pub fn curve_neg<C: Curve>(&mut self, p: AffinePointTarget<C>) {
+        let neg_y = self.neg_nonnative(p.y);
+        AffinePointTarget {
+            x: p.x,
+            y: neg_y,
+        }
+    }
 }
 
-mod tests {}
+mod tests {
+    use anyhow::Result;
+
+
+
+    #[test]
+    fn test_curve_gadget_is_valid() -> Result<()> {
+        type F = CrandallField;
+        const D: usize = 4;
+
+        let config = CircuitConfig::large_config();
+
+        let pw = PartialWitness::new();
+        let mut builder = CircuitBuilder::<F, D>::new(config);
+
+        let 
+
+        let lst: Vec<F> = (0..size * 2).map(|n| F::from_canonical_usize(n)).collect();
+        let a: Vec<Vec<Target>> = lst[..]
+            .chunks(2)
+            .map(|pair| vec![builder.constant(pair[0]), builder.constant(pair[1])])
+            .collect();
+        let mut b = a.clone();
+        b.shuffle(&mut thread_rng());
+
+        builder.assert_permutation(a, b);
+
+        let data = builder.build();
+        let proof = data.prove(pw).unwrap();
+
+        verify(proof, &data.verifier_only, &data.common)
+    }
+}
diff --git a/src/gadgets/mod.rs b/src/gadgets/mod.rs
index 42b3044c..2518e1ab 100644
--- a/src/gadgets/mod.rs
+++ b/src/gadgets/mod.rs
@@ -11,7 +11,7 @@ pub mod permutation;
 pub mod polynomial;
 pub mod random_access;
 pub mod range_check;
-pub mod secp256k1;
+pub mod curve;
 pub mod select;
 pub mod sorting;
 pub mod split_base;