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[2003:f6:5f01:7104:96a7:6592:f113:63a3]) by smtp.gmail.com with UTF8SMTPSA id ffacd0b85a97d-47febfda58fsm761935f8f.7.2026.08.04.08.43.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 04 Aug 2026 08:43:42 -0700 (PDT) Date: Tue, 4 Aug 2026 17:43:40 +0200 From: Uwe =?utf-8?Q?Kleine-K=C3=B6nig?= To: users@linux.kernel.org Cc: linux-kernel@vger.kernel.org, Konstantin Ryabitsev , lpcosse-keysigning@baylibre.com Subject: PGP keysigning at LPC/OSSE 2026 Message-ID: Reply-To: lpcosse-keysigning@baylibre.com Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="eg65hunzvuppm3o4" Content-Disposition: inline --eg65hunzvuppm3o4 Content-Type: text/plain; protected-headers=v1; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Subject: PGP keysigning at LPC/OSSE 2026 MIME-Version: 1.0 Hello, I will organize a PGP keysigning event for the participants of Linux Plumbers and Open Source Summit Europe in Prague this October. The idea is to meet during the two conferences and exchange/verify PGP fingerprints and (depending on how you practise keysigning) ID checking.=20 Then each participant back at home can sign the verified certificates to improve the web of trust. (Current state of the web of trust (as of commit f8c2189fb65f in the kernel's pgpkeys repo): - 654 certificates, among them 12 invalid - 8088 signatures, 3613 of them invalid - 9 certificates are not reachable from Greg's stable key (38DBBDC86092693E). - 317 certificates are not reachable from Linus's cert (79BE3E4300411886). (That's why Greg is used as trust root since some time.) - strong set size: 289 - average distance in the strong set: 4.85 - maximal distance in the strong set: 13 - Best connected certificate is Daniel Wagner's 587C5ECA5D0A306C which can reach the other strong set certs with an average of 3.89 steps. ) The gatherings will be on Tue 2026-10-06 and Thu 2026-10-08 (that is on the second day of each conference) after the official program. I don't know the conference location and also don't have any idea yet how many people will participate, so I will communicate the location and exact time later. (If you have insights about the possibilities there, please reach out.) While it's not mandatory, please register by sending your PGP certificate ("public key") to lpcosse-keysigning@baylibre.com until 2026-09-27 08:00 UTC. Your certificate doesn't need to be in the kernel pgpkeys repo for that. I will prepare a text file with all the registered certificates to speed up the event using the Zimmermann=E2=80=93Sassaman key-signing protocol[1]. You can join without sending your certificate, but then you have to care yourself about how to share your fingerprint. (Probably use gpg-key2ps to prepare paper slips with your certificate data. Having some of these even if you're on the list might be a good idea.) Note I will provide the text file (and thus all the personal information contained in the certificates I receive) in this mail thread to allow late joining (without being on the list then though). If you don't agree to that, don't send in your certificate. If you have questions, don't hesitate to ask (using above email address). Best regards Uwe [1] https://en.wikipedia.org/wiki/Zimmermann%E2%80%93Sassaman_key-signing_p= rotocol --eg65hunzvuppm3o4 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEP4GsaTp6HlmJrf7Tj4D7WH0S/k4FAmpyCKkACgkQj4D7WH0S /k7GQQf/VOPPT50gyvgznfpQp7aO/5y1SjHCHOth2hHOY86eRfYph/UoLGJ6wSsF S4L1lKYJrA4qPNbEiMNZk8kB/GoK8l0bSKGBumWmKQSG8za6sxF/+OZpAGlAnOmQ AkNlChqun+VJ7JXVmBCxOoNUmMjKJ8uGIzr/ZxPZ4QEY2MboUVsIZ0ryjFnKZaHL lrujOik9U1Oh+wGltomGWdT4OrCh5pHNn4D1CWGyrRfgnhdET7cww1nCHi+FsGDO bi3zLBCSgdKOTUr6e5bZ0U+l3FjBPP6rKMUNuQsecuNELM3VzHTVUhFMPsEVYjr8 NOi/86YOP1J0kaWLLTc/FGYSzWCB2w== =JcoL -----END PGP SIGNATURE----- --eg65hunzvuppm3o4--