bug with one key's private keys spread over several keyrings when signing keys

[Hagen Fürstenau]

> Considering the circumstances it really looks like a bug. Spreading keys works 
> for encryption and the usage of a smartcard is a similar situation: main key 
> here, subkeys there.

It works because these are different keys, so the right one is found at
some point. In your case, however, there are two versions of your
primary key: the real one and a broken one (deliberately replaced by
dummy data). If the broken one is found first, it leads to the error you
observed.

You could argue that gpg should keep searching for a non-dummy primary
key. Absent such a feature, the obvious workaround is to order your
keyrings in such a way that the real primary key is found first.

Cheers,
Hagen


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