Journal of Cryptographic Engineering

, Volume 3, Issue 3, pp 169–180

A formal study of two physical countermeasures against side channel attacks

  • Sébastien Briais
  • Jean-Luc Danger
  • Sylvain Guilley
Special Section on PROOFS workshop

DOI: 10.1007/s13389-013-0054-6

Cite this article as:
Briais, S., Danger, JL. & Guilley, S. J Cryptogr Eng (2013) 3: 169. doi:10.1007/s13389-013-0054-6
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Abstract

Secure electronic circuits must implement countermeasures against a wide range of attacks. Often, the protection against side channel attacks requires to be tightly integrated within the functionality to be protected. It is now part of the designer’s job to implement them. But this task is known to be error-prone, and with current development processes, countermeasures are evaluated often very late (at circuit fabrication). To improve the confidence of the designer in the efficiency of the countermeasure, we suggest in this article to resort to formal methods early in the design flow for two reasons. First of all, we intend to check that the process of transformation of the design from the vulnerable description to the protected one does not alter the functionality. Second, we wish to prove that the security properties (that can derive from a formal security functional specification) are indeed met after transformation. Our first contribution is to show how such a framework can be setup (in COQ) for netlist-level protections. The second contribution is to illustrate that this framework indeed allows to detect vulnerabilities in dual-rail logics, with the examples of wave differential dynamic logic and balanced cell-based differential logic.

Keywords

Side-channel attacks Implementation-level countermeasures Dual-rail with precharge logics WDDL BCDL Formal proof COQ 

Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Sébastien Briais
    • 1
  • Jean-Luc Danger
    • 2
  • Sylvain Guilley
    • 2
  1. 1.Secure-IC S.A.S.ParisFrance
  2. 2.Institut Mines-Télécom, Télécom ParistechParis Cedex 13France

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