From 1508a3378ee1521c8b053843ae02deac8e4c114f Mon Sep 17 00:00:00 2001
From: Thomas Waldmann <tw@waldmann-edv.de>
Date: Thu, 2 Apr 2020 19:06:44 +0200
Subject: [PATCH] fixup: python can do the swap in a 1-liner

---
 src/borg/crypto/key.py | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/src/borg/crypto/key.py b/src/borg/crypto/key.py
index 88d091e357..7dbf4eb386 100644
--- a/src/borg/crypto/key.py
+++ b/src/borg/crypto/key.py
@@ -369,9 +369,7 @@ def _derive_byte_permutation(key_material):
         for i in range(256):
             pool, offset = divmod(pool, 256-i)
             j = i + offset
-            tmp = perm[i]
-            perm[i] = perm[j]
-            perm[j] = tmp
+            perm[i], perm[j] = perm[j], perm[i]
 
         if pool == 0:
             # the pool value was less than 256!, we have an unbiased choice