Uncertain Wiretap Channels and Secure Estimation
Abstract
Uncertain wiretap channels are introduced. Their zero-error secrecy capacity is defined. If the sensor-estimator channel is perfect, it is also calculated. Further properties are discussed. The problem of estimating a dynamical system with nonstochastic disturbances is studied where the sensor is connected to the estimator and an eavesdropper via an uncertain wiretap channel. The estimator should obtain a uniformly bounded estimation error whereas the eavesdropper's error should tend to infinity. It is proved that the system can be estimated securely if the zero-error capacity of the sensor-estimator channel is strictly larger than the logarithm of the system's unstable pole and the zero-error secrecy capacity of the uncertain wiretap channel is positive.
Cite
@article{arxiv.1605.00274,
title = {Uncertain Wiretap Channels and Secure Estimation},
author = {Moritz Wiese and Karl Henrik Johansson and Tobias J. Oechtering and Panos Papadimitratos and Henrik Sandberg and Mikael Skoglund},
journal= {arXiv preprint arXiv:1605.00274},
year = {2016}
}
Comments
Long version of a paper to be presented at ISIT 2016