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Am Donnerstag 01 Februar 2024 16:48:13 schrieb David Koch via=20
Gpg4win-users-en:
> I have never been able to certify an imported public key. The ones I
> want to certify belong to close relatives. I always receive this error
> message: "Invalid digest algorithm".

chances are good that you are trying to certify an OpenPGP pubkey that
uses a weak digest algorithm, see
https://www.gnupg.org/documentation/manuals/gnupg/GPG-Esoteric-Options.html=
#index-allow_002dweak_002ddigest_002dalgos

How old are the pubkeys of your relatives?
If it turns out to be they are very old, maybe you can suggest to them to=20
create new ones?

> What can I do to certify an imported public key?

You could use the command line and the mentioned esoteric option from=20
above. :)

(Using the command line to find out more is a typical step for technical=20
diagnosis.)

Best Regards
Bernhard


=2D-=20
https://intevation.de/~bernhard =C2=A0 +49 541 33 508 3-3
Intevation GmbH, Osnabr=C3=BCck, DE; Amtsgericht Osnabr=C3=BCck, HRB 18998
Gesch=C3=A4ftsf=C3=BChrer: Frank Koormann, Bernhard Reiter

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