[Gpg4win-users-en] [GPG4WIN] How do I revoke and upload PGP public keys to PGP public key servers?

Bernhard Reiter bernhard at intevation.de
Thu Oct 14 16:11:04 CEST 2021

Good day!

Am Donnerstag 14 Oktober 2021 15:35:57 schrieb Turritopsis Dohrnii Teo En 
> (1) How do I revoke old PGP public keys?

Find or recreate a revocation certificate, then merge and publish, see


> (2) How do I upload newly generated PGP public keys to PGP public key
> servers?

On the command line it would be a
  gpg --send-keys  KEY_ID

> (3) Where are all the PGP public key servers? Are they still active in
> the year 2021?

The old network and pools of public keyservers have broken down,
a new one is emerging but does not (yet) have all features, see

> (4) How many PGP public key servers are there in the world?

https://spider.pgpkeys.eu/sks-peers lists almost 50,
not all functional. There are more, some do not sync with others,
some violate the OpenPGP standard.

Best Regards,

www.intevation.de/~bernhard   +49 541 33 508 3-3
Intevation GmbH, Osnabrück, DE; Amtsgericht Osnabrück, HRB 18998
Geschäftsführer Frank Koormann, Bernhard Reiter, Dr. Jan-Oliver Wagner
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