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Erschienen in:
2006 | OriginalPaper | Buchkapitel
Towards Security Limits in Side-Channel Attacks
With an Application to Block Ciphers
verfasst von : F. -X. Standaert, E. Peeters, C. Archambeau, J. -J. Quisquater
Erschienen in: Cryptographic Hardware and Embedded Systems - CHES 2006
Verlag: Springer Berlin Heidelberg
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In this paper, we consider a recently introduced framework that investigates physically observable implementations from a theoretical point of view. The model allows quantifying the effect of practically relevant leakage functions with a combination of security and information theoretic metrics. More specifically, we apply our evaluation methodology to an exemplary block cipher. We first consider a Hamming weight leakage function and evaluate the efficiency of two commonly investigated countermeasures, namely noise addition and masking. Then, we show that the proposed methodology allows capturing certain non-trivial intuitions,
e.g.
about the respective effectiveness of these countermeasures. Finally, we justify the need of combined metrics for the evaluation, comparison and understanding of side-channel attacks.