By Gabriele Spini, TNO (Dutch Organization for Applied Scientific Research), P.O. Box 96800, 2509 JE, the Hague, The Netherlands, gabriele.spini@tno.nl | Marie Beth van Egmond, TNO (Dutch Organization for Applied Scientific Research), P.O. Box 96800, 2509 JE, the Hague, The Netherlands, marie_beth.vanegmond@tno.nl | Thijs Veugen, TNO (Dutch Organization for Applied Scientific Research), P.O. Box 96800, 2509 JE, the Hague, The Netherlands; University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands; Cryptology Research Group, Centrum Wiskunde & Informatica (CWI), P.O. Box 94079, 1090 GB, Amsterdam, The Netherlands, thijs.veugen@tno.nl | Alex Sangers, TNO (Dutch Organization for Applied Scientific Research), P.O. Box 96800, 2509 JE, the Hague, The Netherlands, alex.sangers@tno.nl