From f161a41e1bb1b379335bb658877a8859a64c9d10 Mon Sep 17 00:00:00 2001
From: Kévin Le Gouguec <kevin.legouguec@airbus.com>
Date: Thu, 14 Mar 2019 12:47:41 +0100
Subject: [implem-python] Suppression de paramètres redondants
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

tweak_bits est  constant pour un mode  donné ; rounds se  déduit de la
taille de clé.
---
 python/constants.py | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'python/constants.py')

diff --git a/python/constants.py b/python/constants.py
index acedfa7..94a3e0e 100644
--- a/python/constants.py
+++ b/python/constants.py
@@ -1,6 +1,15 @@
 BLOCK_BYTES = 16
 
 
+def rounds(key_bits):
+    r = {
+        128: 32,
+        192: 36,
+        256: 42
+    }
+    return r[key_bits]
+
+
 Sbox = [32,  0,   178, 133, 59,  53,  166, 164,
     48,  228, 106, 44,  255, 89,  226, 14,
     248, 30,  122, 128, 21,  189, 62,  177,
-- 
cgit v1.2.3