From 45795627659003d2d7ab1c71f354688a9eb70e6a Mon Sep 17 00:00:00 2001
From: tripathyr <rohit.tripathy@gmail.com>
Date: Wed, 21 Sep 2022 15:31:49 +0530
Subject: [PATCH 1/2] Added direct double SHA computation

---
 lib_btc.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib_btc.js b/lib_btc.js
index 3449269..1c87125 100644
--- a/lib_btc.js
+++ b/lib_btc.js
@@ -2651,6 +2651,11 @@
 
             return coinjs.verifySignature(h1, s1, p2);
         }
+
+        coinjs.dSHA256 = function(data){
+            return Crypto.SHA256(Crypto.util.hexToBytes(Crypto.SHA256(data))); 
+        }
+
         coinjs.random = function (length) {
             var r = "";
             var l = length || 25;

From b9ac6d73f81da121fd598f1f5fec5c178f73536d Mon Sep 17 00:00:00 2001
From: tripathyr <rohit.tripathy@gmail.com>
Date: Wed, 21 Sep 2022 16:02:08 +0530
Subject: [PATCH 2/2] Modified double SHA256 to fit BIP143

---
 lib_btc.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib_btc.js b/lib_btc.js
index 1c87125..7c8c588 100644
--- a/lib_btc.js
+++ b/lib_btc.js
@@ -2653,7 +2653,11 @@
         }
 
         coinjs.dSHA256 = function(data){
-            return Crypto.SHA256(Crypto.util.hexToBytes(Crypto.SHA256(data))); 
+            var t1,t2,t3 ;
+            t1= Crypto.SHA256(Crypto.util.hexToBytes(data));
+            t2= Crypto.util.hexToBytes(t1);
+            t3= Crypto.SHA256(t2);
+            return t3;
         }
 
         coinjs.random = function (length) {