From 0545eb1c4581c0daa1e0b839b865d6540f8ebba9 Mon Sep 17 00:00:00 2001
From: tg <tg@mirbsd.org>
Date: Thu, 2 Jan 2014 22:51:01 +0000
Subject: [PATCH] =?UTF-8?q?=E2=80=A2=20use=20R=C4=B3nd=C3=A6l=20MixColumn?=
 =?UTF-8?q?=20for=20arc4random=5Froundhash=20avalanching;=20=20=20suggeste?=
 =?UTF-8?q?d=20in=20http://crypto.stackexchange.com/questions/12145=20?=
 =?UTF-8?q?=E2=80=A2=20add=20pure=20mksh=E2=84=A2=20implementation,=20too,?=
 =?UTF-8?q?=20while=20here=20(since=20it=20can=20=20=20replace=20NZAATFini?=
 =?UTF-8?q?sh=20even=20though=20NZATMix=20is=20slower,=20both=20are=20=20?=
 =?UTF-8?q?=20bijective)?=
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---
 dot.mkshrc | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/dot.mkshrc b/dot.mkshrc
index 0bf8d34..9bd3437 100644
--- a/dot.mkshrc
+++ b/dot.mkshrc
@@ -1,8 +1,8 @@
 # $Id$
-# $MirOS: src/bin/mksh/dot.mkshrc,v 1.85 2013/08/22 13:46:46 tg Exp $
+# $MirOS: src/bin/mksh/dot.mkshrc,v 1.86 2014/01/02 22:51:01 tg Exp $
 #-
 # Copyright (c) 2002, 2003, 2004, 2006, 2007, 2008, 2009, 2010,
-#		2011, 2012, 2013
+#		2011, 2012, 2013, 2014
 #	Thorsten Glaser <tg@mirbsd.org>
 #
 # Provided that these terms and disclaimer and all copyright notices
@@ -380,6 +380,14 @@ function Lnzathash_end {
 		print ${Lnzathash_v#16#}
 	fi
 }
+function Lnzathash_mix {
+	local -Uui16 t
+
+	((# t = ((Lnzathash_v >> 7) & 0x01010101) * 0x1B ))
+	((# t ^= (Lnzathash_v << 1) & 0xFEFEFEFE ))
+	((# Lnzathash_v = t ^ (t <<< 24) ^ (Lnzathash_v <<< 8) ^ \
+	    (Lnzathash_v <<< 16) ^ (Lnzathash_v <<< 24) ))
+}
 
 # strip comments (and leading/trailing whitespace if IFS is set) from
 # any file(s) given as argument, or stdin if none, and spew to stdout