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From: Arno Wagner <arno@wagner.name>
To: dm-crypt@saout.de
Subject: Re: [dm-crypt] LUKS disk encryption with remote boot authentication
Date: Tue, 14 Oct 2014 23:51:08 +0200	[thread overview]
Message-ID: <20141014215108.GA14529@tansi.org> (raw)
In-Reply-To: <543D92A8.50701@freesources.org>

On Tue, Oct 14, 2014 at 23:16:24 CEST, Jonas Meurer wrote:
> Hi Cpp,
> 
> Am 14.10.2014 um 13:42 schrieb Cpp:
> > I'm interested in a solution for devices with LUKS disk encryption
> > that use a remote server to securely obtain a decryption key upon
> > boot. Let me elaborate: Suppose I have an embedded device i.e.
> > Raspberry Pi with an external USB HDD or maybe a Cubieboard with a
> > SATA-attached disk. The rootfs is located on an encrypted partition on
> > the disk that has to be decrypted before the OS can boot. The boot
> > partition is located on an unencrypted NAND/SD partition.
> > 
> > Normally a modern linux distro will ask the user to type in the
> > password via a keyboard upon boot, if disk encryption is being used. I
> > am however interested in setups where this decryption key is obtained
> > securely (TLS?) from a remote (secure) server via LAN.
> > 
> > Are there any known setups like this that I can take a look at?
> 
> Debian and Ubuntu cryptsetup packages (at least, I don't know about
> other distributions) support remote unlocking in initramfs. It works the
> following way: the dropbear ssh server ist started in initramfs, you ssh
> into the initramfs and unlock the root partition, afterwards the boot
> process is continued. See section 8. of README.Debian in the
> distribution packages[1] for further information.

Nice! For remotely-triggered unlocking, that is a good solution.

Arno

 
> Cheers,
>  jonas
> 
> [1] or: here
> http://sources.debian.net/src/cryptsetup/2:1.6.6-2/debian/README.Debian/#L202
> _______________________________________________
> dm-crypt mailing list
> dm-crypt@saout.de
> http://www.saout.de/mailman/listinfo/dm-crypt

-- 
Arno Wagner,     Dr. sc. techn., Dipl. Inform.,    Email: arno@wagner.name
GnuPG: ID: CB5D9718  FP: 12D6 C03B 1B30 33BB 13CF  B774 E35C 5FA1 CB5D 9718
----
A good decision is based on knowledge and not on numbers. -- Plato

If it's in the news, don't worry about it.  The very definition of 
"news" is "something that hardly ever happens." -- Bruce Schneier

  reply	other threads:[~2014-10-14 21:51 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-10-14 11:42 [dm-crypt] LUKS disk encryption with remote boot authentication Cpp
2014-10-14 12:42 ` Ralf Ramsauer
2014-10-14 13:12 ` Arno Wagner
2014-10-14 21:16 ` Jonas Meurer
2014-10-14 21:51   ` Arno Wagner [this message]
2014-10-15  6:49     ` Cpp
2014-10-15 11:37       ` Sam Rakowski
2014-10-17 23:47       ` Alex Elsayed
2014-10-17 23:51         ` Alex Elsayed
2014-10-18  3:37         ` Arno Wagner
2014-10-19 19:13           ` Cpp
2014-10-19 19:40             ` Ralf Ramsauer
2014-10-19 20:12               ` Arno Wagner
2014-10-19 20:59                 ` Cpp
2014-10-19 22:10                   ` Arno Wagner
2014-10-20 10:09                     ` Sven Eschenberg
2014-10-20 13:36                       ` Arno Wagner
2014-10-21  4:37           ` Alex Elsayed
2014-10-21 10:01             ` Sven Eschenberg
2014-10-21 13:46               ` Arno Wagner
2014-10-21 14:50                 ` Sven Eschenberg
2014-10-21 16:18                   ` Arno Wagner
2014-10-21 13:42             ` Arno Wagner

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