When importing a single secret key, you are asked if this is your own key, to decide if the owner trust is set to ultimate or not.
This question may confuse people if they import a shared key (which is done for reading encrypted mail to functional mail addresses).
If people answer "No", as they should, they may wonder what to do with this certificate in order to use it, as it is now marked "not certified". The answer would be that they need to certify it with their own key.
last Edit 2025-02-20:
To lead the user to the solution we want to open a certification dialog after they click "No".
For the import dialog we need a text variant for keys with one vs. with more UIDs.
Singular:
You have imported a certificate with a secret key. Fingerprint: XXX User ID: ABC Are you the only user of this secret key? Yes, I am the only user / No, others also use this key
Plural
You have imported a certificate with a secret key. Fingerprint: XXX User IDs: * ABC * DEF Are you the only user of this secret key? Yes, I am the only user / No, others also use this key
The certification dialog which opens after choosing "No" should then have a short explanation text at the beginning:
In order to use a shared secret key you should certify it.