linux-kernel - Re: [RFD] linux-firmware key arrangement for firmware signing

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Message-ID: <CAB=NE6VFK8eNyP-vmme6mSLtSPFqNj=_K5fDLzHcGU33LVSUGg@mail.gmail.com>
Date:	Thu, 21 May 2015 11:30:51 -0700
From:	"Luis R. Rodriguez" <mcgrof@...e.com>
To:	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>
Cc:	"Woodhouse, David" <david.woodhouse@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"seth.forshee@...onical.com" <seth.forshee@...onical.com>,
	"zohar@...ux.vnet.ibm.com" <zohar@...ux.vnet.ibm.com>,
	"mricon@...nel.org" <mricon@...nel.org>,
	"dhowells@...hat.com" <dhowells@...hat.com>,
	"rusty@...tcorp.com.au" <rusty@...tcorp.com.au>,
	"linux-security-module@...r.kernel.org" 
	<linux-security-module@...r.kernel.org>,
	"jlee@...e.de" <jlee@...e.de>, "kyle@...nel.org" <kyle@...nel.org>,
	"gnomes@...rguk.ukuu.org.uk" <gnomes@...rguk.ukuu.org.uk>,
	"james.l.morris@...cle.com" <james.l.morris@...cle.com>,
	"serge@...lyn.com" <serge@...lyn.com>,
	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>
Subject: Re: [RFD] linux-firmware key arrangement for firmware signing

On Thu, May 21, 2015 at 11:23 AM, Luis R. Rodriguez <mcgrof@...e.com> wrote:
> Sounds like a great project if you have the freedom and flexibility to
> enable such hardware component. Now, if you can save a few bucks on it
> per unit, how much would it be exactly? Just curious.

Also, another thing to think about:

How many crypto checking devices do you need? If your motherboard
already comes with one, why not trust / rely on it once for all device
firmware? I realize silicon folks want to sell you kitchen sinks with
granite counter tops included, but if working on spiffy open designs,
I figure having the freedom to trust / rely on some other device's
components might yield pretty cheap and flexible solutions.

 Luis
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