Expiration date of subkeys (retroactive)

[Ingo Klöcker]

On Sonntag, 1. Januar 2023 03:54:21 CET gnupg-users at aschoettler.com wrote:
> I have several GnuPG keys which I edited with KGpg.
> https://apps.kde.org/de/kgpg/
> 
> Unfortunately, the subkeys were not taken into account when setting
> the expiry date.
> How can I retroactively edit my expired keys and expire the subkeys?

With the expire command of `gpg --edit-key`. You may have to use the
--faked-system-time option (or change the system time of your computer) 
because, if I remember correctly, gpg doesn't allow to set an expiration date 
in the past.

Regards,
Ingo
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