test_onion.py: drop repeated sha calculation

9 years ago · cadaa348e3
1 changed files with 2 additions and 2 deletions
--- a/test/test_onion.py
+++ b/test/test_onion.py
@ -174,8 +174,8 @@ class Onion(object):

        enckey = cls.tweak_sha(sec, b'\x00')[:16]
        hmac   = cls.tweak_sha(sec, b'\x01')
-        iv     = cls.tweak_sha(sec, b'\x02')[:16]
-        pad_iv = cls.tweak_sha(sec, b'\x02')[16:]
+        ivs    = cls.tweak_sha(sec, b'\x02')
+        iv, pad_iv = ivs[:16], ivs[16:]

        return enckey, hmac, iv, pad_iv