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Towards post-quantum security for IoT endpoints with NTRU

: Guillen, O.M.; Pöppelmann, T.; Bermudo Mera, J.M.; Bongenaar, E.F.; Sigl, G.; Sepulveda, J.


European Design Automation Association -EDAA-; IEEE Computer Society, Technical Council Test Technology; IEEE Solid-State Circuits Society; International Federation for Information Processing -IFIP-:
Design, Automation & Test in Europe, DATE 2017. Proceedings : 27-31 March 2017, Swisstech, Lausanne, Switzerland
Piscataway, NJ: IEEE, 2017
ISBN: 978-3-9815370-8-6
ISBN: 978-3-9815370-9-3
ISBN: 978-1-5090-5826-6
Design, Automation & Test in Europe Conference & Exhibition (DATE) <20, 2017, Lausanne>
Fraunhofer AISEC ()

The NTRU cryptosystem is one of the main alternatives for practical implementations of post-quantum, public-key cryptography. In this work, we analyze the feasibility of employing the NTRU encryption scheme, NTRUEncrypt, in resource constrained devices such as those used for Internet-of-Things endpoints. We present an analysis of NTRUEncrypt's advantages over other cryptosystems for use in such devices. We describe four different NTRUEncrypt implementations on an ARM Cortex M0-based microcontroller, compare their results, and show that NTRUEncrypt is suitable for use in battery-operated devices. We present performance and memory footprint figures for different security parameters, as well as energy consumption in a resource constrained microcontroller to backup these claims. Furthermore, to the best of our knowledge, in this work we present the first time-independent implementation of NTRUEncrypt.