From 0f57a41ed8558da5a023aec39d43b4b01567d24c Mon Sep 17 00:00:00 2001
From: David Hill <dhill@mindcry.org>
Date: Fri, 9 Oct 2015 15:30:12 -0400
Subject: [PATCH] txscript:  Add ScriptVerifyLowS to the standard flags

We've already been generating lowS sigs for quite a while.  This removes
the malleability vector.

This mimics Bitcoin Core commit 49dd5c629df0a08cf3b1ea8085c03312d1a81696
---
 txscript/standard.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/txscript/standard.go b/txscript/standard.go
index 77219e42..c869c8db 100644
--- a/txscript/standard.go
+++ b/txscript/standard.go
@@ -30,7 +30,8 @@ const (
 		ScriptVerifyMinimalData |
 		ScriptStrictMultiSig |
 		ScriptDiscourageUpgradableNops |
-		ScriptVerifyCleanStack
+		ScriptVerifyCleanStack |
+		ScriptVerifyLowS
 )
 
 // ScriptClass is an enumeration for the list of standard types of script.