JEDI - Many-to-Many End-to-End Encryption and Key Delegation for IoT

Explore a comprehensive presentation on JEDI (Joining Encryption and Delegation for IoT), a many-to-many end-to-end encryption protocol designed for Internet of Things (IoT) systems. Delve into the challenges of securing communication in large-scale IoT environments like smart buildings and cities, where multiple principals interact indirectly via intermediaries. Learn how JEDI addresses these challenges by encrypting and signing messages end-to-end while conforming to the decoupled communication model typical of IoT systems. Discover the protocol's key features, including support for expiry, fine-grained data access, and the ability for principals to delegate restricted keys to other principals. Examine the careful protocol design and implementation that enables JEDI to run across a spectrum of IoT devices, including ultra low-power deeply embedded sensors with severe CPU, memory, and energy constraints. Follow the presenter's journey from the preliminary design using Attribute-Based Encryption (ABE) to the final implementation using a more efficient encryption scheme. Gain insights into the protocol's performance, including estimated battery life on a Hamilton sensor, and understand how JEDI can be applied to existing IoT messaging systems with modest overhead.