GPG signing RPM packages : must not have subkeys

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Hi Martin,

It turns out that the key created by 

KEY="$HOME/.ceph-workbench/release-team-key.asc"
if ! test -f $KEY ; then
  printf "Key-Type: 1\nKey-Length: 2048\nSubkey-Type: 1\nSubkey-Length: 2048\nName-Real: Release Team\nName-Email: contact@xxxxxxxx\nExpire-Date: 0" | GNUPGHOME=~/.ceph-workbench gpg --batch --gen-key
  GNUPGHOME=~/.ceph-workbench gpg --export --armor > $KEY
fi

cannot be used to verify RPM packages: rpm -K on the signed package claims the 69C8876E key is missing. It turns out to be related to the subkey. 

--------------------------------------------
pub   2048R/B8F1ACED 2016-03-11
      Key fingerprint = 7FEB E845 6F19 153B AAFC  2810 4597 2ACD B8F1 ACED
uid                  A Contributor <generous@xxxxxxxx>
sub   2048R/69C8876E 2016-03-11

rpm -K complains that the 69C8876E key is not available. After removing the subkey 69C8876E with gpg --edit-key and signing the RPM again, rpm -K is happy. This does not make any sense to me and I suspect there is an expert explanation that justify this behavior. The sensible way out seems to create a passwordless key with no subkey to avoid that problem. Do you happen to know how that can be done ?

Cheers

-- 
Loïc Dachary, Artisan Logiciel Libre
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