diff --git a/progit/lib.py b/progit/lib.py
index 33f5105..4b50c10 100644
--- a/progit/lib.py
+++ b/progit/lib.py
@@ -12,7 +12,9 @@
 import datetime
 import json
 import os
+import random
 import shutil
+import string
 import tempfile
 import uuid
 
@@ -48,6 +50,19 @@ def create_session(db_url, debug=False, pool_recycle=3600):
     return scopedsession
 
 
+def id_generator(size=15, chars=string.ascii_uppercase + string.digits):
+    """ Generates a random identifier for the given size and using the
+    specified characters.
+    If no size is specified, it uses 15 as default.
+    If no characters are specified, it uses ascii char upper case and
+    digits.
+    :arg size: the size of the identifier to return.
+    :arg chars: the list of characters that can be used in the
+        idenfitier.
+    """
+    return ''.join(random.choice(chars) for x in range(size))
+
+
 def commit_to_patch(repo_obj, commits):
     ''' For a given commit (PyGit2 commit object) of a specified git repo,
     returns a string representation of the changes the commit did in a