SECURITY MANAGEMENT OF NETWORKED DEVICES USING A DISTRIBUTED LEDGER NETWORK

A blockchain-based system for manages the root of trust for a swarm of deployed devices and maintains separation between the control and data planes of the device network through policies distributed from the blockchain via a message broker system and enforced in the secure processing environment of the devices. The blockchain is operated by a set of stakeholder entities that provide consensus for adding transactions to the blockchain or channels thereof, which comprise attestation data for use by the devices during onboarding, firmware installation and updates, and policy updates. Devices subscribe to message topics on a message broker system to obtain control plane and data plane messages. Access to message topics is managed by rules enforced by the secure processing environment.