From c60e57615ac5dc348178acbb01a60cbda983d6d7 Mon Sep 17 00:00:00 2001
From: Sergey Matveev <stargrave@stargrave.org>
Date: Sat, 19 Nov 2016 16:26:55 +0300
Subject: [PATCH] Move hexdigest implementation to common PEP247 class

---
 pygost/gost28147_mac.py | 4 ----
 pygost/gost34112012.py  | 2 --
 pygost/gost341194.py    | 3 ---
 pygost/iface.py         | 4 +++-
 4 files changed, 3 insertions(+), 10 deletions(-)

diff --git a/pygost/gost28147_mac.py b/pygost/gost28147_mac.py
index 5f1ce69..164abcb 100644
--- a/pygost/gost28147_mac.py
+++ b/pygost/gost28147_mac.py
@@ -29,7 +29,6 @@ from pygost.gost28147 import validate_sbox
 from pygost.gost28147 import xcrypt
 from pygost.gost3413 import pad1
 from pygost.iface import PEP247
-from pygost.utils import hexenc
 from pygost.utils import strxor
 from pygost.utils import xrange
 
@@ -96,9 +95,6 @@ class MAC(PEP247):
             )[::-1]
         return ns2block(prev)
 
-    def hexdigest(self):
-        return hexenc(self.digest())
-
 
 def new(key, data=b"", iv=8 * b"\x00", sbox=DEFAULT_SBOX):
     return MAC(key, data, iv, sbox)
diff --git a/pygost/gost34112012.py b/pygost/gost34112012.py
index 7ba2b5d..de4ef2e 100644
--- a/pygost/gost34112012.py
+++ b/pygost/gost34112012.py
@@ -272,5 +272,3 @@ class GOST34112012(PEP247):
         hsh = g(0, hsh, chk)
         return hsh[-self._digest_size:]
 
-    def hexdigest(self):
-        return hexenc(self.digest())
diff --git a/pygost/gost341194.py b/pygost/gost341194.py
index 90a5f82..adc0925 100644
--- a/pygost/gost341194.py
+++ b/pygost/gost341194.py
@@ -180,9 +180,6 @@ class GOST341194(PEP247):
         h = _step(h, checksum, self.sbox)
         return h[::-1]
 
-    def hexdigest(self):
-        return hexenc(self.digest())
-
 
 def new(data=b"", sbox=DEFAULT_SBOX):
     return GOST341194(data, sbox)
diff --git a/pygost/iface.py b/pygost/iface.py
index 887d69f..e2d6a4c 100644
--- a/pygost/iface.py
+++ b/pygost/iface.py
@@ -1,6 +1,8 @@
 from abc import ABCMeta
 from abc import abstractmethod
 
+from pygost.utils import hexenc
+
 
 # This function is taken from six package as is
 def add_metaclass(metaclass):
@@ -42,7 +44,7 @@ class PEP247(object):
         """Return the hash value as a string containing 8-bit data.
         """
 
-    @abstractmethod
     def hexdigest(self):
         """Return the hash value as a string containing hexadecimal digits.
         """
+        return hexenc(self.digest())
-- 
2.44.0