diff --git a/lib/customUtils.js b/lib/customUtils.js
index ae65503..3a0b7f3 100644
--- a/lib/customUtils.js
+++ b/lib/customUtils.js
@@ -1,4 +1,5 @@
 var fs = require('fs')
+  , crypto = require('crypto')
   ;
 
 
@@ -19,4 +20,17 @@ function ensureDirectoryExists (dir, cb) {
 }
 
 
+/**
+ * Return a random string of length len
+ */
+function uid (len) {
+  return crypto.randomBytes(Math.ceil(len * 3 / 4))
+    .toString('base64')
+    .slice(0, len);
+}
+
+console.log(uid(5));
+
+
 module.exports.ensureDirectoryExists = ensureDirectoryExists;
+module.exports.uid = uid;