From: Arno Wagner <arno@wagner.name>
To: dm-crypt@saout.de
Subject: Re: [dm-crypt] passfrase or dev_random for keyfile of a dmcrypt_swap
Date: Mon, 19 Apr 2010 18:54:58 +0200 [thread overview]
Message-ID: <20100419165458.GA27932@tansi.org> (raw)
In-Reply-To: <20100419163745.C906144B6C@ws5-1.us4.outblaze.com>
On Mon, Apr 19, 2010 at 05:37:45PM +0100, Si St wrote:
> What should be recommended:
>
> To apply either /dev/random or a passfrase for the establishment of a
> keyfile to a swap partition?
Allways /dev/random, unless you have a low-entropy scenario,
in which you may have to combine it with a stored and updated
seed.
> I am thinking about a potential crash and the consequences if the swap
> partition has to be used for rebuild of something. Then a /dev/random or
> if necessary /dev/urandom would not be so good.
The swap partition is not used in reconstructing things under
Linux.
Arno
--
Arno Wagner, Dr. sc. techn., Dipl. Inform., CISSP -- Email: arno@wagner.name
GnuPG: ID: 1E25338F FP: 0C30 5782 9D93 F785 E79C 0296 797F 6B50 1E25 338F
----
Cuddly UI's are the manifestation of wishful thinking. -- Dylan Evans
If it's in the news, don't worry about it. The very definition of
"news" is "something that hardly ever happens." -- Bruce Schneier
next prev parent reply other threads:[~2010-04-19 16:52 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-19 16:37 [dm-crypt] passfrase or dev_random for keyfile of a dmcrypt_swap Si St
2010-04-19 16:54 ` Arno Wagner [this message]
2010-04-19 19:01 ` Heinz Diehl
2010-04-20 5:41 ` Luca Berra
-- strict thread matches above, loose matches on Subject: below --
2010-04-20 14:15 Si St
2010-04-20 15:15 ` Arno Wagner
2010-04-21 8:34 ` Heinz Diehl
2010-04-21 9:06 ` Jonas Meurer
2010-04-20 18:06 Si St
2010-04-20 19:14 ` Arno Wagner
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=20100419165458.GA27932@tansi.org \
--to=arno@wagner.name \
--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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox