Timing Attack Resilient Decoding Algorithms for Physical Unclonable Functions

Conference: SCC 2017 - 11th International ITG Conference on Systems, Communications and Coding
02/06/2017 - 02/09/2017 at Hamburg, Germany

Proceedings: ITG-Fb. 268: SCC 2017

Pages: 6Language: englishTyp: PDF

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Puchinger, Sven; Mueelich, Sven; Bossert, Martin (Institute of Communications Engineering, Ulm University, Ulm, Germany)
Wachter-Zeh, Antonia (Institute for Communications Engineering, Technical University of Munich, Munich, Germany)

This paper deals with the application of list decoding of Reed–Solomon codes to a concatenated code for key reproduction using Physical Unclonable Functions. The resulting codes achieve a higher error-correction performance at the same code rate than known schemes in this scenario. We also show that their decoding algorithms can be protected from side-channel attacks on the runtime both by masking techniques and by directly modifying the algorithms to have constant runtime.