From 4a5d7052a9514fd03f2813771a309e09411bca51 Mon Sep 17 00:00:00 2001
From: Henry de Valence <hdevalence@hdevalence.ca>
Date: Fri, 6 Jan 2017 10:46:55 -0500
Subject: [PATCH] Add convenience wrapper around mult_by_pow_2 to clear
 cofactor

---
 src/curve.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/curve.rs b/src/curve.rs
index 971cdb5..d23567f 100644
--- a/src/curve.rs
+++ b/src/curve.rs
@@ -634,6 +634,14 @@ impl ExtendedPoint {
         h
     }
 
+    /// Multiply by the cofactor: compute `8 * self`.
+    ///
+    /// Convenience wrapper around `mult_by_pow_2`.
+    #[inline]
+    pub fn mult_by_cofactor(&self) -> ExtendedPoint {
+        self.mult_by_pow_2(3)
+    }
+
     /// Compute `2^k * self` by successive doublings.
     /// Requires `k > 0`.
     #[inline]