use full timestamps, no cutoff at 2011, fixes #46

itsdangerous.py

@@ -52,10 +52,6 @@ def dumps(self, obj):
 compact_json = _CompactJSON()
 
 
-# 2011/01/01 in UTC
-EPOCH = 1293840000
-
-
 def want_bytes(s, encoding='utf-8', errors='strict'):
     if isinstance(s, text_type):
         s = s.encode(encoding, errors)
@@ -393,13 +389,13 @@ def get_timestamp(self):
         """Returns the current timestamp.  This implementation returns the
         seconds since 1/1/2011.  The function must return an integer.
         """
-        return int(time.time() - EPOCH)
+        return int(time.time())
 
     def timestamp_to_datetime(self, ts):
         """Used to convert the timestamp from `get_timestamp` into a
         datetime object.
         """
-        return datetime.utcfromtimestamp(ts + EPOCH)
+        return datetime.utcfromtimestamp(ts)
 
     def sign(self, value):
         """Signs the given string and also attaches a time information."""

tests.py

@@ -126,7 +126,7 @@ class TimedSerializerTestCase(SerializerTestCase):
 
     def setUp(self):
         self._time = time.time
-        time.time = lambda: idmod.EPOCH
+        time.time = lambda: 0
 
     def tearDown(self):
         time.time = self._time
@@ -140,7 +140,7 @@ def test_decode_with_timeout(self):
         self.assertNotEqual(ts, idmod.Serializer(secret_key).dumps(value))
 
         self.assertEqual(s.loads(ts), value)
-        time.time = lambda: idmod.EPOCH + 10
+        time.time = lambda: 10
         self.assertEqual(s.loads(ts, max_age=11), value)
         self.assertEqual(s.loads(ts, max_age=10), value)
         self.assertRaises(