  Within this the work applicability of Physical LayerSecurity (PHYSEC) based
key management within Long RangeWide Area Network (LoRaWAN) is proposed and
evaluatedusing an experimental testbed. Since Internet of Things
(IoT)technologies have been arising in past years, they have as wellattracted
attention for possible cyber attacks. While LoRaWANalready provides many of the
features needed in order to ensuresecurity goals such as data confidentiality
and integrity, it lacksin measures such as secure key management and
distributionschemes. Since conventional solutions are not feasible here,
e.g.due to constraints on payload size and power consumption, wepropose the
usage of PHYSEC based session key management,which can provide the respective
measures in a more lightweightway. The results derived from our testbed show
that it can be apromising alternative approach.
