From 0633086ac19fd2ed2cd0c4753969342ef202e2dc Mon Sep 17 00:00:00 2001
From: therealyingtong <yingtong@electriccoin.co>
Date: Sun, 13 Sep 2020 11:33:44 +0800
Subject: [PATCH] Make MSM and Guard derive Clone

---
 src/poly/commitment.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/poly/commitment.rs b/src/poly/commitment.rs
index 4ac51a3..7f96286 100644
--- a/src/poly/commitment.rs
+++ b/src/poly/commitment.rs
@@ -24,7 +24,7 @@ pub struct OpeningProof<C: CurveAffine> {
 }
 
 /// A multiscalar multiplication in the polynomial commitment scheme
-#[derive(Debug)]
+#[derive(Debug, Clone)]
 pub struct MSM<'a, C: CurveAffine> {
     params: &'a Params<C>,
     g_scalars: Option<Vec<C::Scalar>>,
@@ -246,7 +246,7 @@ impl<C: CurveAffine> Params<C> {
 }
 
 /// A guard returned by the verifier
-#[derive(Debug)]
+#[derive(Debug, Clone)]
 pub struct Guard<'a, C: CurveAffine> {
     msm: MSM<'a, C>,
     neg_z1: C::Scalar,