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International Workshop on Cryptographic Hardware and Embedded Systems

CHES 2008: Cryptographic Hardware and Embedded Systems – CHES 2008 pp 146–163Cite as

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A Design for a Physical RNG with Robust Entropy Estimators

A Design for a Physical RNG with Robust Entropy Estimators

  • Wolfgang Killmann1 &
  • Werner Schindler2 
  • Conference paper
  • 3387 Accesses

  • 30 Citations

Part of the Lecture Notes in Computer Science book series (LNSC,volume 5154)

Abstract

We briefly address general aspects that reliable security evaluations of physical RNGs should consider. Then we discuss an efficient RNG design that is based on a pair of noisy diodes. The main contribution of this paper is the formulation and the analysis of the corresponding stochastic model which interestingly also fits to other RNG designs. We prove a theorem that provides tight lower bounds for the entropy per random bit, and we apply our results to a prototype of a particular physical RNG.

Keywords

  • Physical RNG
  • stochastic model
  • entropy

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Author information

Authors and Affiliations

  1. T-Systems ISS GmbH, Rabinstr. 8, 53111, Bonn, Germany

    Wolfgang Killmann

  2. Bundesamt für Sicherheit in der Informationstechnik (BSI), Godesberger Allee 185–189, 53175, Bonn, Germany

    Werner Schindler

Authors
  1. Wolfgang Killmann
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  2. Werner Schindler
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    © 2008 Springer-Verlag Berlin Heidelberg

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    Cite this paper

    Killmann, W., Schindler, W. (2008). A Design for a Physical RNG with Robust Entropy Estimators. In: Oswald, E., Rohatgi, P. (eds) Cryptographic Hardware and Embedded Systems – CHES 2008. CHES 2008. Lecture Notes in Computer Science, vol 5154. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-85053-3_10

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