Cryptology ePrint Archive: Report 2003/152

Optimal Statistical Power Analysis

Eric Brier and Christophe Clavier and Francis Olivier

Abstract: A classical model is used for the power consumption of cryptographic devices. It is based on the Hamming distance of the data handled with regard to an unknown but constant reference state. Once validated experimentally it allows an optimal attack to be derived called Correlation Power Analysis. It also explains the defects of former approaches such as Differential Power Analysis.

Category / Keywords: secret-key cryptography / Correlation factor, CPA, DPA, Hamming distance, power analysis, DES,

Date: received 31 Jul 2003, last revised 8 Sep 2003

Contact author: francis olivier at gemplus com

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Version: 20030908:140541 (All versions of this report)

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