http://tzoz3bensgxyzs7da7lpgsn3a74h7hlbm4wa6ytq2tg6ktd57w22vqqd.onion/doc/about/openpgp_keys/signing_key_revocation/index.en.html
This would
prevent people from verifying our images with OpenPGP until we
publish a new signing key and build trust in it.
Distribution of the shares
==========================
Each person from the Board, group A, has a *different* share, A1,
A2, ..., An.