From b1f48e71a8969390f5ead54aaf7569180d0e8120 Mon Sep 17 00:00:00 2001
From: daxpedda <daxpedda@gmail.com>
Date: Fri, 25 Apr 2025 00:23:14 +0200
Subject: [PATCH] Implement `Eq` for `NonIdentity` & `NonZeroScalar`

---
 elliptic-curve/src/point/non_identity.rs |  2 +-
 elliptic-curve/src/scalar/nonzero.rs     | 11 +++++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/elliptic-curve/src/point/non_identity.rs b/elliptic-curve/src/point/non_identity.rs
index 3068afaa0..c985ba7fd 100644
--- a/elliptic-curve/src/point/non_identity.rs
+++ b/elliptic-curve/src/point/non_identity.rs
@@ -18,7 +18,7 @@ use crate::{CurveArithmetic, NonZeroScalar, Scalar};
 ///
 /// In the context of ECC, it's useful for ensuring that certain arithmetic
 /// cannot result in the identity point.
-#[derive(Clone, Copy, Debug)]
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
 pub struct NonIdentity<P> {
     point: P,
 }
diff --git a/elliptic-curve/src/scalar/nonzero.rs b/elliptic-curve/src/scalar/nonzero.rs
index 4d2e4c51e..550ef1833 100644
--- a/elliptic-curve/src/scalar/nonzero.rs
+++ b/elliptic-curve/src/scalar/nonzero.rs
@@ -128,6 +128,8 @@ where
     }
 }
 
+impl<C> Eq for NonZeroScalar<C> where C: CurveArithmetic {}
+
 impl<C> From<NonZeroScalar<C>> for FieldBytes<C>
 where
     C: CurveArithmetic,
@@ -256,6 +258,15 @@ where
     }
 }
 
+impl<C> PartialEq for NonZeroScalar<C>
+where
+    C: CurveArithmetic,
+{
+    fn eq(&self, other: &Self) -> bool {
+        self.scalar.eq(&other.scalar)
+    }
+}
+
 /// Note: this is a non-zero reduction, as it's impl'd for [`NonZeroScalar`].
 impl<C, I> Reduce<I> for NonZeroScalar<C>
 where