Can I replace a main key by a sub key?

Dirk Köppen dirk at
Tue Jun 14 13:40:14 CEST 2016

Dear friends of GNUPG,

I do have a main key which is DSA and subkeys for RSA and ELG-E.

Now I would like to use the sign-service at which unfortunately does not support DSA.

Is there a way to make my main DSA key a subkey and the sub RSA key my main key ?

Thanks for your help and best regards,

Dirk Köppen <dirk at>
PGP: D66A AF85 5DD9 EBE3 4539 90EF B815 3E77 7E40 5904

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