1 files changed, 4 insertions, 4 deletions
diff --git a/tools/certtools.py b/tools/certtools.py
index 0009d5d..e9ee99b 100644
--- a/tools/certtools.py
+++ b/tools/certtools.py
@@ -11,12 +11,12 @@ import struct
 import sys
 import hashlib
 import ecdsa
-import datetime
 import cStringIO
 import zipfile
 import shutil
 import requests
 import warnings
+from datetime import datetime
 
 from certkeys import publickeys
 
@@ -336,8 +336,8 @@ def check_sth_signature(baseurl, sth, publickey=None):
     signature_type = struct.pack(">b", 1)
     timestamp = struct.pack(">Q", sth["timestamp"])
     tree_size = struct.pack(">Q", sth["tree_size"])
-    hash = base64.decodestring(sth["sha256_root_hash"])
-    tree_head = version + signature_type + timestamp + tree_size + hash
+    ehash = base64.decodestring(sth["sha256_root_hash"])
+    tree_head = version + signature_type + timestamp + tree_size + ehash
 
     check_signature(baseurl, signature, tree_head, publickey=publickey)
 
@@ -426,7 +426,7 @@ def get_leaf_hash(merkle_tree_leaf):
     return leaf_hash.digest()
 
 def timing_point(timer_dict=None, name=None):
-    t = datetime.datetime.now()
+    t = datetime.now()
     if timer_dict:
         starttime = timer_dict["lasttime"]
         stoptime = t