diff --git a/halo2_gadgets/src/sinsemilla.rs b/halo2_gadgets/src/sinsemilla.rs
index 3f06315a..ca4c14fb 100644
--- a/halo2_gadgets/src/sinsemilla.rs
+++ b/halo2_gadgets/src/sinsemilla.rs
@@ -412,6 +412,41 @@ where
         }
     }
 
+    #[allow(clippy::type_complexity)]
+    /// $\mathsf{SinsemillaCommit}$ from [§ 5.4.8.4][concretesinsemillacommit].
+    ///
+    /// [concretesinsemillacommit]: https://zips.z.cash/protocol/nu5.pdf#concretesinsemillacommit
+    pub fn hash(
+        &self,
+        layouter: impl Layouter<C::Base>,
+        message: Message<C, SinsemillaChip, K, MAX_WORDS>,
+    ) -> Result<
+        (
+            ecc::NonIdentityPoint<C, EccChip>,
+            Vec<SinsemillaChip::RunningSum>,
+        ),
+        Error,
+    > {
+        assert_eq!(self.M.sinsemilla_chip, message.chip);
+        self.M.hash_to_point(layouter, message)
+    }
+
+    #[allow(clippy::type_complexity)]
+    /// $\mathsf{SinsemillaCommit}$ from [§ 5.4.8.4][concretesinsemillacommit].
+    ///
+    /// [concretesinsemillacommit]: https://zips.z.cash/protocol/nu5.pdf#concretesinsemillacommit
+    pub fn blinding_factor(
+        &self,
+        mut layouter: impl Layouter<C::Base>,
+        r: ecc::ScalarFixed<C, EccChip>,
+    ) -> Result<
+        ecc::Point<C, EccChip>,
+        Error,
+    > {
+        let (blind, _) = self.R.mul(layouter.namespace(|| "[r] R"), r)?;
+        Ok(blind)
+    }
+
     #[allow(clippy::type_complexity)]
     /// $\mathsf{SinsemillaCommit}$ from [§ 5.4.8.4][concretesinsemillacommit].
     ///
@@ -429,8 +464,8 @@ where
         Error,
     > {
         assert_eq!(self.M.sinsemilla_chip, message.chip);
-        let (blind, _) = self.R.mul(layouter.namespace(|| "[r] R"), r)?;
-        let (p, zs) = self.M.hash_to_point(layouter.namespace(|| "M"), message)?;
+        let blind = self.blinding_factor(layouter.namespace(|| "[r] R"), r)?;
+        let (p, zs) = self.hash(layouter.namespace(|| "M"), message)?;
         let commitment = p.add(layouter.namespace(|| "M + [r] R"), &blind)?;
         Ok((commitment, zs))
     }