added new tor project key with the following steps:

  $ old_gpgkeyid=`gpg --list-packets config/archives/tor*.key.chroot | grep keyid | head -n1 | cut -d ' ' -f 2`
  $ gpg --recv-keys $old_gpgkeyid
  $ gpg -a --export $old_gpgkeyid > config/archives/tor-repository.list.key.binary
  $ gpg -a --export $old_gpgkeyid > config/archives/tor-repository.list.key.chroot