Use hmac for additional security against paths leaking.

1 files changed, 2 insertions, 1 deletions

diff --git a/summainlib.py b/summainlib.py
index c3c0bc0..3de9517 100644
--- a/summainlib.py
+++ b/summainlib.py
@@ -16,6 +16,7 @@
 
 import grp
 import hashlib
+import hmac
 import math
 import os
 import pwd
@@ -91,7 +92,7 @@ class PathNormalizer(object):
         self._secret = secret
         
     def normalize(self, path):
-        return hashlib.sha1(self._secret + path).hexdigest()
+        return hmac.new(self._secret, path).hexdigest()
 
 
 class SamePath(object): # pragma: no cover