Completely get rid of addmod

[pygost.git] / pygost / gost341194.py

diff --git a/pygost/gost341194.py b/pygost/gost341194.py
index 6d58efd666de769c9358ff66b2bf5f0175681d23..4ffb45e63f189cb4a4c1027b884c68ee54fddf6e 100644 (file)
--- a/pygost/gost341194.py
+++ b/pygost/gost341194.py
@@ -23,7 +23,6 @@ from copy import copy
 from functools import partial
 from struct import pack
 
-from pygost.gost28147 import addmod
 from pygost.gost28147 import block2ns
 from pygost.gost28147 import encrypt
 from pygost.gost28147 import ns2block
@@ -167,7 +166,7 @@ class GOST341194(PEP247):
         for i in xrange(0, len(m), BLOCKSIZE):
             part = m[i:i + BLOCKSIZE][::-1]
             _len += len(part) * 8
-            checksum = addmod(checksum, int(hexenc(part), 16), 2 ** 256)
+            checksum = (checksum + int(hexenc(part), 16)) % (2 ** 256)
             if len(part) < BLOCKSIZE:
                 part = b"\x00" * (BLOCKSIZE - len(part)) + part
             h = _step(h, part, self.sbox)