From 9a962bb73a3389c4f26019b09eeb994289ac7dd1 Mon Sep 17 00:00:00 2001
From: Christopher Jeffrey <chjjeffrey@gmail.com>
Date: Mon, 16 May 2016 03:53:25 -0700
Subject: [PATCH] fix force53 handling in read64n.

---
 lib/bcoin/utils.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/bcoin/utils.js b/lib/bcoin/utils.js
index fff7ffce..c0de575c 100644
--- a/lib/bcoin/utils.js
+++ b/lib/bcoin/utils.js
@@ -1794,6 +1794,9 @@ utils.read64N = function read64N(data, off, force53, be) {
     return -(hi * 0x100000000 + lo + 1);
   }
 
+  if (force53)
+    hi &= 0x1fffff;
+
   assert((hi & 0xffe00000) === 0, 'Number exceeds 2^53-1');
 
   return hi * 0x100000000 + lo;