diff --git a/lib/crypto.js b/lib/crypto.js
deleted file mode 100644
index 18ee91f..0000000
--- a/lib/crypto.js
+++ /dev/null
@@ -1,11 +0,0 @@
-// mimic a subset of node's crypto API for the browser
-
-function randomBytes(width) {
-  var out = new Uint8Array(width);
-  (global.crypto || global.msCrypto).getRandomValues(out);
-  return out;
-}
-
-module.exports = {
-  randomBytes: randomBytes
-}