#!/bin/sh

KEYS="6B5239AA9E65B3E4 B5220102DC01A940 F2A871548F9CDB83"

case "$1" in
    remove|purge|upgrade)
	if [ -x /usr/bin/apt-key ]; then
	    for KEY in $KEYS
	    do
		if [ ! -z "$(apt-key list | grep -s ${KEY})" ]
		then
		    echo -n "Entferne Schlüssel ${KEY} - "
		    /usr/bin/apt-key del ${KEY}
		fi
	    done
	else
	    echo "/usr/bin/apt-key not found"
	    exit 1
	fi
	;;
    *)
	echo "prerm called without argument remove|purge|upgrade"
	exit 1
	;;
esac

exit 0
