From: wintonian <mail@wintonian.org.uk>
To: dm-crypt@saout.de
Subject: Re: [dm-crypt] Security concern: gpg keyfile vs passphrase
Date: Tue, 07 Jul 2015 22:00:11 +0100 [thread overview]
Message-ID: <559C3DDB.1020805@wintonian.org.uk> (raw)
In-Reply-To: <559C3771.2030705@riseup.net>
(replying to the list rather than the individual might be a better idea)
A quick guess,
In this scenario you have the following:-
A, something physical - i.e. a keyfile.
plus
B, something known - i.e. a pass phrase.
Which equals something more secure
I guess there might be more to it than that, but I assume that's part of it.
Regards
Robert
On 07/07/15 21:32, lyz wrote:
> Hi all,
>
> I'm encrypting my whole system under LUKS, and I've seen that in the
> wiki of Arch and Gentoo they suggest to use a keyfile and encrypt it
> with gpg.
>
> Why is more secure to encrypt a keyfile with a passphrase and then
> encrypt the device with the keyfile rather than encrypting the device
> directly with the passphrase?
>
> Against a brute force attack the passphrase is the same, so they should
> be equally secure, am I wrong?
>
> Thank you
>
>
>
>
> _______________________________________________
> dm-crypt mailing list
> dm-crypt@saout.de
> http://www.saout.de/mailman/listinfo/dm-crypt
>
next prev parent reply other threads:[~2015-07-07 22:13 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-07 20:32 [dm-crypt] Security concern: gpg keyfile vs passphrase lyz
2015-07-07 21:00 ` wintonian [this message]
[not found] ` <559C3C05.9040701@wintonian.org.uk>
2015-07-07 21:08 ` lyz
2015-07-07 21:20 ` Arno Wagner
2015-07-09 19:00 ` Sven Eschenberg
2015-07-08 3:00 ` David Christensen
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