rpm --import [URL zum rpm-Key]
...die Keys liegen meistens im jeweiligen channel in einem Ordner Namens "repodata" und heißen "repomd.xml.key".
warning: rpmts_HdrFromFdno: Header V3 DSA signature: NOKEY, key ID 2e1efa87
Trying to import the key 58d8ff412e1efa87 from subkeys.pgp.net...
gpg: requesting key 2E1EFA87 from hkp server subkeys.pgp.net
gpg: keyserver timed out
gpg: keyserver receive failed: Keyserver error
FEHLER!: gpg failed to import keyid 58d8ff412e1efa87, please make sure that gpg
is installed, that the keyserver subkeys.pgp.net is working and that the
package /var/lib/smart/packages/libkcddb4-4.1.1-19.5.i586.rpm has a valid
signature.
FEHLER!: libkcddb4-4.1.1-19.5.i586.rpm: public key not available
Ich vermute ganz stark, dass du da irgendwas verhunzt hast.