From 58233178055fe96b3b1b0b90200bae3af60d5d40 Mon Sep 17 00:00:00 2001
From: Brandon Smith <brandon@team.casa>
Date: Wed, 1 Aug 2018 06:14:15 -0700
Subject: [PATCH] Don't persist signature until after verification

---
 lib/primitives/mtx.js | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/lib/primitives/mtx.js b/lib/primitives/mtx.js
index 808e17b44..bd8a77256 100644
--- a/lib/primitives/mtx.js
+++ b/lib/primitives/mtx.js
@@ -721,12 +721,12 @@ class MTX extends TX {
 
       result.push(redeem);
 
-      vector.fromStack(result);
-
       if (preSig && this.checksig(index, prev, value, sig, ring.publicKey, version) === false) {
         throw new Error('Invalid signature.');
       }
 
+      vector.fromStack(result);
+
       return true;
     }
 
@@ -736,12 +736,12 @@ class MTX extends TX {
     if (!result)
       return false;
 
-    vector.fromStack(result);
-
     if (preSig && this.checksig(index, prev, value, sig, ring.publicKey, version) === false) {
       throw new Error('Invalid signature.');
     }
 
+    vector.fromStack(result);
+
     return true;
   }