linux-kernel - Re: [PATCH] dm: verity target

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Message-ID: <48F0EA4A-5982-4686-8492-422F4225D5FB@netflix.com>
Date:	Thu, 15 Sep 2011 15:02:18 -0700
From:	Wesley Miaw <wmiaw@...flix.com>
To:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] dm: verity target

On 2011 Sep 15, at 11:45 AM, Mandeep Singh Baines wrote:

> The verity target provides transparent integrity checking of block devices
> using a cryptographic digest.
> 
> dm-verity is meant to be setup as part of a verified boot path.  This
> may be anything ranging from a boot using tboot or trustedgrub to just
> booting from a known-good device (like a USB drive or CD).
> 
> dm-verity is part of ChromeOS's verified boot path. It is used to verify
> the integrity of the root filesystem on boot. The root filesystem is
> mounted on a dm-verity partition which transparently verifies each block
> with a bootloader verified hash passed into the kernel at boot.

Netflix would like dm-verity to be included in the Linux kernel. Over the past year, we have been working with Google and porting dm-verity onto a number of consumer electronics devices running embedded Linux. Demand for this feature has been high and we see a lot of benefit associated with making dm-verity part of the official kernel.
--
Wesley Miaw
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