  Implantable Medical Devices (IMDs) such as pacemakers and neurostimulators
are highly constrained in terms of energy. In addition, the
wireless-communication facilities of these devices also impose security
requirements considering their life-critical nature. However, security
solutions that provide considerable coverage are generally considered to be too
taxing on an IMD battery. Consequently, there has been a tendency to adopt
ultra-lightweight security primitives for IMDs in literature. In this work, we
demonstrate that the recent advances in embedded computing in fact enable the
IMDs to use more mainstream security primitives, which do not need to
compromise significantly on security for fear of impacting IMD autonomy.
