  Proliferation of IoT devices in society demands a renewed focus on securing
the use and maintenance of such systems. IoT-based systems will have a great
impact on society and therefore such systems must have guaranteed resilience.
We introduce cryptographic-based building blocks that strive to ensure that
distributed IoT networks remain in a healthy condition throughout their
lifecycle. Our presented solution utilizes deterministic and interlinked smart
contracts on the Ethereum blockchain to enforce secured management and
maintenance for hardened IoT devices. A key issue investigated is the protocol
development for securing IoT device deployments and means for communicating
securely with devices. By supporting values of openness, automation, and
provenance, we can introduce novel means that reduce the threats of
surveillance and theft, while also improving operator accountability and trust
in IoT technology.
