Random sequences generation through optical measurements by phase-shifting interferometry

¹ Project Group for Automatic Mesh Generation and Advanced Methods, Gamma3 Project (UTT-INRIA), University of Technology of Troyes, France - 12 rue Marie Curie, BP 2060, 10010 Troyes Cedex, France, EU
² Network & Information Security, Ecole Supérieure d'Informatique, Electronique, Automatique (ESIEA) 9 rue Vésale, 75005 Paris, France, EU
³ Nanoscopic Physics, Institute of Condensed Matter and Nanosciences, Catholic University of Louvain 2 Chemin du Cyclotron, 1348 Louvain-la-Neuve, Belgium, EU

^a thomas.grosges@utt.fr

Received: 6 December 2011
Accepted: 6 March 2012

Abstract

The development of new techniques for producing random sequences with a high level of security is a challenging topic of research in modern cryptographics. The proposed method is based on the measurement by phase-shifting interferometry of the speckle signals of the interaction between light and structures. We show how the combination of amplitude and phase distributions (maps) under a numerical process can produce random sequences. The produced sequences satisfy all the statistical requirements of randomness and can be used in cryptographic schemes.