An Efficient Method for Random Delay Generation in Embedded Software

  • Jean-Sébastien Coron
  • Ilya Kizhvatov
Conference paper

DOI: 10.1007/978-3-642-04138-9_12

Part of the Lecture Notes in Computer Science book series (LNCS, volume 5747)
Cite this paper as:
Coron JS., Kizhvatov I. (2009) An Efficient Method for Random Delay Generation in Embedded Software. In: Clavier C., Gaj K. (eds) Cryptographic Hardware and Embedded Systems - CHES 2009. Lecture Notes in Computer Science, vol 5747. Springer, Berlin, Heidelberg


Random delays are a countermeasure against a range of side channel and fault attacks that is often implemented in embedded software. We propose a new method for generation of random delays and a criterion for measuring the efficiency of a random delay countermeasure. We implement this new method along with the existing ones on an 8-bit platform and mount practical side-channel attacks against the implementations. We show that the new method is significantly more secure in practice than the previously published solutions and also more lightweight.


Side channel attacks countermeasures random delays 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Jean-Sébastien Coron
    • 1
  • Ilya Kizhvatov
    • 1
  1. 1.Université du LuxembourgLuxembourg

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