From 484ebe94bb75d5a50691fa88babc635e2a3ed37c Mon Sep 17 00:00:00 2001
From: Adrian Nagy <adrian.nagy@viablesystems.io>
Date: Tue, 28 Nov 2023 11:49:59 +0100
Subject: [PATCH] feat(signer): Create method to multiply with secret key
 scalar

---
 signer/src/keypair.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/signer/src/keypair.rs b/signer/src/keypair.rs
index 45e00dda43..fc81dce32e 100644
--- a/signer/src/keypair.rs
+++ b/signer/src/keypair.rs
@@ -93,6 +93,13 @@ impl Keypair {
     pub fn to_hex(&self) -> String {
         hex::encode(self.to_bytes())
     }
+
+    /// Performs scalar multiplication with the secret key
+    pub fn secret_multiply_with_curve_point(&self, multiplicand: CurvePoint) -> CurvePoint {
+        use ark_ec::AffineCurve;
+        use ark_ec::ProjectiveCurve;
+        multiplicand.mul(self.secret.clone().into_scalar()).into_affine()
+    }
 }
 
 impl fmt::Debug for Keypair {