1 files changed, 36 insertions, 0 deletions
diff --git a/node_modules/randombytes/browser.js b/node_modules/randombytes/browser.js
new file mode 100644
index 000000000..1aa3edcc7
--- /dev/null
+++ b/node_modules/randombytes/browser.js
@@ -0,0 +1,36 @@
+'use strict'
+
+function oldBrowser () {
+  throw new Error('secure random number generation not supported by this browser\nuse chrome, FireFox or Internet Explorer 11')
+}
+
+var crypto = global.crypto || global.msCrypto
+
+if (crypto && crypto.getRandomValues) {
+  module.exports = randomBytes
+} else {
+  module.exports = oldBrowser
+}
+
+function randomBytes (size, cb) {
+  // phantomjs needs to throw
+  if (size > 65536) throw new Error('requested too many random bytes')
+  // in case browserify  isn't using the Uint8Array version
+  var rawBytes = new global.Uint8Array(size)
+
+  // This will not work in older browsers.
+  // See https://developer.mozilla.org/en-US/docs/Web/API/window.crypto.getRandomValues
+  if (size > 0) {  // getRandomValues fails on IE if size == 0
+    crypto.getRandomValues(rawBytes)
+  }
+  // phantomjs doesn't like a buffer being passed here
+  var bytes = new Buffer(rawBytes.buffer)
+
+  if (typeof cb === 'function') {
+    return process.nextTick(function () {
+      cb(null, bytes)
+    })
+  }
+
+  return bytes
+}