Sign-Based Differential Power Analysis

  • Roman Novak
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2908)


Differential Power Analysis (DPA) by Paul Kocher et al. is expanded with the information that is hidden in the sign of power biases. The latter reveal values that collide with the DPA target value within the circuitry. With the help of cross-iteration comparisons, the interpretation of those values can provide significant amounts of the information required to reverse engineer secret algorithm. We have successfully launched a demonstration attack on a secret authentication and session-key generation algorithm implemented on SIM cards in GSM networks. The findings provide guidance for designing tamper resistant devices that are secure against this kind of attack.


Power Dissipation Smart Card Cryptographic Algorithm Power Bias Power Trace 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2004

Authors and Affiliations

  • Roman Novak
    • 1
  1. 1.Jozef Stefan InstituteLjubljanaSlovenia

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