Reduce duplication
diff --git a/cryptography/fernet.py b/cryptography/fernet.py
index 3fcd187..3cab547 100644
--- a/cryptography/fernet.py
+++ b/cryptography/fernet.py
@@ -85,13 +85,13 @@
raise InvalidToken
assert six.indexbytes(data, 0) == 0x80
- timestamp = data[1:9]
+ timestamp = struct.unpack(">Q", data[1:9])[0]
iv = data[9:25]
ciphertext = data[25:-32]
if ttl is not None:
- if struct.unpack(">Q", timestamp)[0] + ttl < current_time:
+ if timestamp + ttl < current_time:
raise InvalidToken
- if current_time + _MAX_CLOCK_SKEW < struct.unpack(">Q", timestamp)[0]:
+ if current_time + _MAX_CLOCK_SKEW < timestamp:
raise InvalidToken
h = HMAC(self.signing_key, hashes.SHA256(), self.backend)
h.update(data[:-32])