Information theoretically secure, enhanced Johnson noise based key distribution over the smart grid with switched filters
This addresses secure communication for smart grid infrastructure, but it is incremental as it builds on existing noise-based key distribution methods.
The authors tackled secure key distribution in smart power grids by introducing a protocol with a reconfigurable filter system to create non-overlapping single loops for Kirchhoff-Law-Johnson-Noise-based key distribution, achieving analysis of protocol speed versus grid size and potential for unconditionally secure key distribution in arbitrary dimensions.
We introduce a protocol with a reconfigurable filter system to create non-overlapping single loops in the smart power grid for the realization of the Kirchhoff-Law-Johnson-(like)-Noise secure key distribution system. The protocol is valid for one-dimensional radial networks (chain-like power line) which are typical of the electricity distribution network between the utility and the customer. The speed of the protocol (the number of steps needed) versus grid size is analyzed. When properly generalized, such a system has the potential to achieve unconditionally secure key distribution over the smart power grid of arbitrary geometrical dimensions.