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[pygost.git] / pygost / gost3413.py

diff --git a/pygost/gost3413.py b/pygost/gost3413.py
index c0201c97ae8d2947aaf149494d444463c6c83a90..5be6bc81735ab842c145c9f9a2904081abc3eb63 100644 (file)
--- a/pygost/gost3413.py
+++ b/pygost/gost3413.py
@@ -1,6 +1,6 @@
 # coding: utf-8
 # PyGOST -- Pure Python GOST cryptographic functions library
-# Copyright (C) 2015-2017 Sergey Matveev <stargrave@stargrave.org>
+# Copyright (C) 2015-2018 Sergey Matveev <stargrave@stargrave.org>
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -138,7 +138,7 @@ def ofb(encrypter, bs, data, iv):
     result = []
     for i in xrange(0, len(data) + pad_size(len(data), bs), bs):
         r = r[1:] + [encrypter(r[0])]
-        result.append(strxor(r[1], data[i:i + bs]))
+        result.append(strxor(r[-1], data[i:i + bs]))
     return b"".join(result)