From: Yaron Sheffer <yaronf@gmx.com>
To: dm-crypt@saout.de
Subject: [dm-crypt] XTS performance
Date: Tue, 01 May 2012 09:26:39 +0300 [thread overview]
Message-ID: <4F9F821F.2040209@gmx.com> (raw)
Hi,
Looking back at the archives, it appears that aes-xts-plain in dm-crypt
runs at half the speed of aes-cbc-essiv:
http://www.saout.de/pipermail/dm-crypt/2010-November/001348.html. Milan
explained it at the time by XTS doing 2 AES operations for each
plaintext block. But my understanding of XTS is that it is similar to
ESSIV: 1 AES op per 16-byte block, plus 1 op for the sector.
- Did I misread the definition of XTS, and it's really 2 AES ops per
16-byte block?
- Does anybody have more recent performance comparisons, confirming (or
not) the performance difference?
Thanks,
Yaron
next reply other threads:[~2012-05-01 6:38 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-01 6:26 Yaron Sheffer [this message]
2012-05-01 9:29 ` [dm-crypt] XTS performance Arno Wagner
2012-05-01 12:35 ` Heinz Diehl
-- strict thread matches above, loose matches on Subject: below --
2012-04-30 12:00 Yaron Sheffer
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4F9F821F.2040209@gmx.com \
--to=yaronf@gmx.com \
--cc=dm-crypt@saout.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.