linux-kernel - Re: kernel.org status: establishing a PGP web of trust

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Date:	Thu, 6 Oct 2011 10:48:02 -0700
From:	Greg KH <gregkh@...e.de>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc:	Jon Masters <jonathan@...masters.org>, Valdis.Kletnieks@...edu,
	Adrian Bunk <bunk@...sta.de>,
	"Frank Ch. Eigler" <fche@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: kernel.org status: establishing a PGP web of trust

On Thu, Oct 06, 2011 at 06:39:40PM +0100, Mark Brown wrote:
> On Thu, Oct 06, 2011 at 11:58:22AM -0400, Jon Masters wrote:
> 
> > What I'd like to see is "keysigning" parties where folks with well
> > established (in use) keys turn up and *prove* they own the key by
> > signing some information the other attendees provide. That way they can
> > not only say "hey, I'm dude X, trust me this is my fingerprint, here's a
> > photo ID" (which means nothing in the case of a well established online
> > identify that is trusted already), but they can say "hey, I have access
> > to this key, because I just signed that random message you gave me
> > interactively". Who cares who the heck they really are beyond that?
> > (intentionally a loaded statement to make the point).
> 
> A common approach to this for at least the e-mail portion of the address
> is to sign the ID with the address and then mail the signed key
> encrypted to the address, deleting all local copies and requiring that
> the recipient publish the signature.  This at least demonstrates that
> the owner of the key can read mail at that address.

The 'caff' tool does this for you automatically.  I just learned of it
yesterday, and already it's saved me loads of time.  Highly recommended,
and odds are it's already packaged up for you in your distro.

greg k-h
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