Physical Unclonable Functions can be used for secure key generation in cryptographic applications. It is explained how methods from coding theory must be applied in order to ensure reliable key regeneration. Based on previous work, we show ways how to obtain better results with respect to error probability and codeword length. Also, an example based on Generalized Concatenated codes is given, w...

We show a simple and eecient construction of a pseudo-random generator based on the intractability of an NP-complete problem from the area of error-correcting codes. The generator is proved as secure as a hard instance of the syndrome decoding problem. Each application of the scheme generates a linear amount of bits in only quadratic computing time.

Abstract OFDM (Orthogonal Frequency Division Multiplexing) is an excellent technology that will almost certainly play a large role in next generation wireless communication systems. However, in OFDM, no frequency diversity is exploited to improve BER performance. Today’s OFDM systems attempt to overcome this limitation by application of channel coding and interleaving, which requires a reductio...

Striving for greater accuracy, some machine tool manufacturers are developing parallel structures for the next generation machine tool. Therefore, tools are needed to analyze the effect error sources have on this type of structure. A model of a Stewart Platform based machine tool is developed that provides the framework for inclusion of all relevant error sources. An error analysis is presented...

In this paper, we study the requirements on orbit determination compatible with operation of next generation space clocks at their expected uncertainty. Using the ACES (Atomic Clock Ensemble in Space) mission as an example, we develop a relativistic model for time and frequency transfer to investigate the effects of orbit determination errors. We show that, for the considered orbit error models...

1Groupe d’Electromagnétisme Appliqué (GEA), PST Ville d’Avray, Université Paris X-Nanterre, 1 chemin Desvallières, 92410 Ville d’Avray, France 2Laboratoire des images et des signaux (LIS) GIPSA, École Nationale Supérieure d’Ingénieurs Électriciens de Grenoble, Institut National Polytechnique de Grenoble (INPG), Domaine Universitaire, BP 46, 38402 Saint-Martin-d’Hères Cedex, France 3Groupe d’Etu...

We investigate applying an error correcting code of small block size to enhance the performance of key generation from wireless channels. A trade-off between performance and secrecy is then studied. Preliminary results show that using a simple lower quantization approach achieves better performance than applying a small block size BCH code.

We report on a complete experimental implementation of a quantum key distribution protocol through a free space link using polarization-entangled photon pairs from a compact parametric down-conversion source. Over 10 hours of uninterrupted communication between sites 1.5 km apart, we observe average key generation rates of 630 per second after error correction and privacy amplification. Our sch...