From d2390ee80970ede39a59cf9c35d03027deedd759 Mon Sep 17 00:00:00 2001
From: Ilya Kreymer <ikreymer@gmail.com>
Date: Sun, 20 Mar 2016 22:43:05 -0700
Subject: [PATCH] wombat: add check for window.crypto, generate 32-bit values

---
 pywb/static/wombat.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/pywb/static/wombat.js b/pywb/static/wombat.js
index a0498ebf..e2bd8d3f 100644
--- a/pywb/static/wombat.js
+++ b/pywb/static/wombat.js
@@ -679,11 +679,15 @@ var wombat_internal = function($wbwindow) {
     }
 
     function init_crypto_random() {
+        if (!$wbwindow.crypto || $wbwindow.Crypto) {
+            return;
+        }
+
         var orig_getrandom = $wbwindow.Crypto.prototype.getRandomValues;
 
         var new_getrandom = function(array) {
             for (i = 0; i < array.length; i++) {
-                array[i] = parseInt(Math.random() * 65535);
+                array[i] = parseInt(Math.random() * 4294967296);
             }
             return array;
         }