Secure Estimation and Zero-Error Secrecy Capacity

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• Dr Tobias Oechtering, KTH - Royal Institute of Technology
• Friday 04 May 2018, 11:00-12:00
• Seminar Room 909b, Level 9, EEE Building.

If you have a question about this talk, please contact Joan P O'Brien.

Abstract: In this talk we consider the problem of securely estimating states of an unstable dynamical system subject to no stochastic disturbances. We assume that the estimator obtains all its information through an uncertain channel which is subject to non-stochastic disturbances as well, and an eavesdropper obtains a disturbed version of the channel input through a second uncertain channel. An encoder observes and block-encodes the states in such a way that, upon sending the generated codeword, the estimator’s error is bounded and such that a security criterion is satisfied. A sufficient condition on the uncertain wiretap channel is derived which ensures that a bounded estimation error and security are achieved. This condition is also shown to be necessary for a subclass of uncertain wiretap channels. To formulate the condition, the zero-error secrecy capacity of uncertain wiretap channels will be introduced and discussed during the talk.

Speaker Bio: Tobias Oechtering has been Associate Professor at the Department of Information Science and Engineering at KTH Royal Institute of Technology in Stockholm, Sweden since 2013, which he joined as Post-doc in 2008. He received his Dipl-Ing degree in Electrical Engineering and Information Technology in 2002 from RWTH Aachen University, Germany, his Dr-Ing degree in Electrical Engineering in 2007 from the Technische Universitat Berlin, Germany, and his Docent degree in Communication Theory in 2012 from KTH Royal Institute of Technology. He was awarded an SRA ICT -TNG starting grant in 2010, a VR (Swedish Research Council) Junior Researcher Project grant in 2012, and a VR Project grant in 2016. Tobias currently acts as coordinator of the European CHIST -ERA project COPES (Consumer-centric Privacy in smart Energy gridS). He is general chair of the 2019 IEEE Information Theory Workshop in Aug 25-28 in Visby, Gotland, Sweden and currently Associate Editor of IEEE Transactions on Information Forensic and Security. His research interests include information theory, statistical signal processing, physical layer privacy and security, as well as networked control.

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• Seminar Room 909b, Level 9, EEE Building

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