Re: Add djbw@kernel.org to 1ED2916A667D8802.asc

Dan Williams
2026-04-10T20:48:40Z

Uwe Kleine-König wrote:
> Hallo Dan,
>
> On Wed, Apr 08, 2026 at 06:49:33PM -0700, Dan Williams wrote:
> > -----BEGIN PGP PUBLIC KEY BLOCK-----
> >
> > mQINBE6TN1IBEADBi0Ztes1AmBXGUHh4zp7z8YMykXtF2o+Vd5uscmp0Z+CNoXMu
> > waEOmxQjwjC6khh7gl/1i0YNMHtwTaNFgXJKVluH5uMXpeo5GXrCHmI14YNhJmRn
> > 3AHzmM8wh9H0lCy96F71Wv13itJINy9AKYarQJcIUmpMxxO/f5VoE1UYeoouy19+
> > ...
> > -----END PGP PUBLIC KEY BLOCK-----
>
> The two UIDs that are already tracked in the pgpkeys repo are only
> protected by SHA1, and also the key binding is affected. GnuPG has no
> issues with that, but other tools (e.g. Sequioa) take this more serious.
> (See e.g. https://www.schneier.com/tag/sha-1/ for more details. And
> https://lore.kernel.org/keys/fxotnlhsyl2frp54xtguy7ryrucuwselanazixeax3motyyoo3@7vf7ip6gxyvx/
> for how to fix that.)
>
> While you can address this yourself, your key has several signatures
> protected by SHA1, which is somewhat the same issue, but you'd need the
> cooperation of the guys who signed your key before, to fix that. The
> easiest way to do that is to ask them to resign your certificate.
> In return you can offer to resign their certs as there are several
> SHA1-protected signatures by you on other keys. See
> https://www.kleine-koenig.org/~uwe/resign-sha1/?certid=1ED2916A667D8802
> for the "todo list".
>
> Don't hesitate to ask if questions arise.

Certainly the sq instructions look more approachable than doing this
with gpg. Given my old intel.com address is now disabled I assume I
should just delete that uid and then only need to fixup the gmail one?

For using an offline backup gpg directory to redo the signatures looks
like I can ask sq to use a different PGP_CERT_D directory. If you have a
ready example for that case that would save some fumbling time.

> From my side this doesn't need to stop adding your updated cert to the
> pgpkeys repo, as it doesn't make things worse than they already are.

Thanks for the heads up!