From 2a1aaa72e88248f83d06afd064cac0dfc093857f Mon Sep 17 00:00:00 2001
From: bunnie <bunnie@kosagi.com>
Date: Fri, 21 Aug 2020 02:31:37 +0800
Subject: [PATCH] leave a breadcrumb for the next work to do

---
 src/montgomery.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/montgomery.rs b/src/montgomery.rs
index 1e10ec4..953628c 100644
--- a/src/montgomery.rs
+++ b/src/montgomery.rs
@@ -617,6 +617,9 @@ impl<'a, 'b> Mul<&'b Scalar> for &'a MontgomeryPoint {
         x0.U = FieldElement::from_bytes(&copy_from_rf(25));
         x0.W = FieldElement::from_bytes(&copy_from_rf(26));
 
+        // TODO: optimize this relatively innocuous looking call.
+        // this consumes about 100ms runtime -- need to implement this using
+        // curve25519 acceleration!
         x0.to_affine()
     }
     /*