From: Niels Möller <nisse@lysator.liu.se>
Date: Sun, 6 Feb 2011 14:41:22 +0000 (+0100)
Subject: *** empty log message ***
X-Git-Tag: nettle_2.2_release_20110711~183
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=7a2dc5996f1357517e7dfcb2d39e528cb9aec93e;p=thirdparty%2Fnettle.git

*** empty log message ***

Rev: nettle/ChangeLog:1.130
---

diff --git a/ChangeLog b/ChangeLog
index ae233f2b..30911172 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2011-02-06  Niels Möller  <nisse@lysator.liu.se>
+
+	* gcm.c (gcm_rightshift): Complete rewrite, to use word rather
+	than byte operations. Improves gmac performance from 830 cycles /
+	byte to (still poor) 268 cycles per byte on intel x86_64.
+	(gcm_gf_mul): Rewrote. Still uses the bitwise algorithm from the
+	specification, but with separate byte and bit loops. Improves gmac
+	performance a bit further, to 227 cycles/byte.
+
 2011-02-05  Niels Möller  <nisse@lysator.liu.se>
 
 	* examples/nettle-benchmark.c (time_gmac): New function.