From: wolfgang.aigner@gmx.de
To: Steve Verniers <sverniers79@gmail.com>, dm-crypt@saout.de
Subject: Re: [dm-crypt] "re-encrypting" ?
Date: Sun, 14 Aug 2011 01:35:23 +0200 [thread overview]
Message-ID: <20110813233523.241220@gmx.net> (raw)
In-Reply-To: <CAAhm=5X_gv6=7BOvv8Ov0Qmw2qd8xX9h3-D4GVMOTUoJXvP+Qg@mail.gmail.com>
Hello Steve,
> I have encrypted my FS with cryptsetup and see it's
> 256bit but I found that it is too taxing on my systems resources (only
> Pentium 4 machine with 2GB ram) Could I "re-encrypt" the FS without
> loosing
> the data which is already stored on it ? I have no room to backup so much
> space.
Yes, but its always dangerous and you could loose all your data. Don't trust on that and do a backup. If it doesn't matter if you loose anything you could use:
dd if=/dev/mapper/[cryptdevice] of=/dev/[device] conv=notrunc
Be aware this is DANGEROUS.
> Also what would be a recommanded bit for a system such as mine ? 64bit ?
> 128
You get a bit more Speed with 128 Bit AES, but still it is slower than withou encryption.
cheers
Wolfgang
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next prev parent reply other threads:[~2011-08-13 23:35 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-13 21:18 [dm-crypt] "re-encrypting" ? Steve Verniers
2011-08-13 23:35 ` wolfgang.aigner [this message]
2011-08-14 1:10 ` Steve Verniers
2011-08-14 7:00 ` Heinz Diehl
2011-08-14 17:57 ` Wolfgang Aigner
2011-08-14 8:05 ` Roscoe
2011-08-14 8:32 ` Arno Wagner
2011-08-14 10:32 ` Heinz Diehl
2011-08-14 12:22 ` Arno Wagner
2011-08-14 12:49 ` Kyle Rose
2011-08-14 13:12 ` Heinz Diehl
2011-08-14 16:59 ` Arno Wagner
2011-08-14 17:46 ` Wolfgang Aigner
2011-08-15 7:54 ` Arno Wagner
2011-08-15 13:00 ` Kyle Rose
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