8 When you start using this repository, you might get warning messages like this::
10 The following signatures couldn't be verified because
11 the public key is not available.`
13 Or you will be asked questions like this over and over::
15 WARNING: The following packages cannot be authenticated!
17 Install these packages without verification [y/N]?
19 This is because your APT installation does not know the GPG key that is used to
20 sign the release files of this repository. Making APT happy again is easy:
22 1. Get the key. Either download the `repository key from here
23 <http://apsy.gse.uni-magdeburg.de/debian/apsy.gse.uni-magdeburg.de.asc>`_
24 or fetch it from *subkeys.pgp.net*.
26 2. Now feed the key into APT by invoking::
30 Where `#file#` has to be replaced with the location of the key file you just
31 downloaded. You need to have superuser-privileges to do this (either do it