Hans (2018-12-25): > IMHO kmail could use the already existent key from me, but kmail does it only > accept as a "signing key". That looks strange and is not logically in my mind. I get this from your mail: # gpg: Signature made Tue Dec 25 11:24:13 2018 CET using DSA key ID 5F093FF8 # gpg: Can't check signature: public key not found I did not manage to find your key on key servers, but there is enough information here: DSA. https://en.wikipedia.org/wiki/Digital_Signature_Algorithm It cannot be used for encrypting, only for signing, that is because of its mathematical design. On the contrary, for example, a RSA key can be used for both signing and encrypting. Regards, -- Nicolas George
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