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

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Message-Id: <201110012333.55428.rjw@sisk.pl>
Date:	Sat, 1 Oct 2011 23:33:55 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Greg KH <gregkh@...e.de>
Subject: Re: kernel.org status: establishing a PGP web of trust

Hi,

On Saturday, October 01, 2011, H. Peter Anvin wrote:
> Hi all,
> 
> Since the kernel.org status announcement last week a number of you
> have contacted me about re-establishing credentials.  In order to
> establish a proper PGP web of trust we need keys that are cross-signed
> by other developers.  As such, we ask that you follow the following
> steps:
> 
> 1. Make sure your systems are uncompromised.  We will address specific
>    recommended steps for that in a separate email.
> 
> 2. Create a new PGP/GPG key, and also generate a key revocation
>    certificate (but don't import it anywhere -- save it for the
>    future) for your new key.  In the near future we are considering
>    setting up an escrow service for key revocation certificates.
> 
>    I recommend using a 4096-bit RSA key.  Given how fast computers are
>    these days, there is no reason to use a shorter key.  DSA keys
>    should be considered obsolete; substantial weaknesses have been
>    found in DSA.
> 
>    $ gpg --gen-key
>    $ gpg -u <key ID> -o <key ID>.revoke --gen-revoke

OK, how long should the new key be valid?

Rafael
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