From 86bb67b76d70c765f4d7b19e5cf1f2338914e2d7 Mon Sep 17 00:00:00 2001
From: "Ryan X. Charles" <ryan@bitpay.com>
Date: Tue, 22 Apr 2014 17:45:08 -0300
Subject: [PATCH] remove unnecessary bignum conversion

---
 lib/BIP32.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/BIP32.js b/lib/BIP32.js
index 875eb87..94a7602 100644
--- a/lib/BIP32.js
+++ b/lib/BIP32.js
@@ -281,12 +281,12 @@ BIP32.prototype.deriveChild = function(i) {
   } else {
     var data = Buffer.concat([this.eckey.public, ib]);
     var hash = coinUtil.sha512hmac(data, this.chainCode);
-    var il = bignum.fromBuffer(hash.slice(0, 32), {size: 32});
+    var il = hash.slice(0, 32);
     var ir = hash.slice(32, 64);
 
     // Ki = (IL + kpar)*G = IL*G + Kpar
     var ilGkey = new Key();
-    ilGkey.private = il.toBuffer({size: 32});
+    ilGkey.private = il;
     ilGkey.regenerateSync();
     var ilG = Point.fromKey(ilGkey);
     var oldkey = new Key();