Re: FAQ 2.2 Scenario (1) - clarification concerning "encrypted root"

Arno Wagner <[email protected]>
Newsgroups gmane.linux.kernel.device-mapper.dm-crypt
Message-ID <[email protected]>
On Sat, Jun 20, 2020 at 11:07:32 CEST, [email protected] wrote:
> Thanks a lot for the clarification!
> 
> On 20.06.20 08:10, Arno Wagner wrote:
> > I have a scenario: Put the initrd on USB-stick, remove it after
> > boot and secure the USB-stick physically (safe) when not in use.
> > I actually did that set-up for somebody. This is not perfect either, 
> > but makes attacks that rely on manipulating the disk directly a lot 
> > harder.
> You mean because the initrd is somewhat safe from manipulation in this
> scenario? Wouldn't you have to do the same for the kernel then?

Yes. The kernel also goes on that stick. Grub does too, if it is
used for booting.
 
> > But what do you use to unlock it? Something needs to run 
> > cryptsetup for that unlocking action.
> 
> The Arch way seems to be to do this via the initrd which in a "default"
> setup resides on a dedicated /boot. I figure that might be good enough
> for me then.

Very likely.

Regards,
Arno

> 
> Best Wishes
> 
> 
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-- 
Arno Wagner,     Dr. sc. techn., Dipl. Inform.,    Email: [email protected]
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----
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