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CHES
2009
Springer

Higher-Order Masking and Shuffling for Software Implementations of Block Ciphers

11 years 6 months ago
Higher-Order Masking and Shuffling for Software Implementations of Block Ciphers
Differential Power Analysis (DPA) is a powerful side channel key recovery attack that efficiently breaks block ciphers implementations. In software, two main techniques are usually applied to thwart them: masking and operations shuffling. To benefit from the advantages of the two techniques, recent works have proposed to combine them. However, the schemes which have been designed until now only provide limited resistance levels and some advanced DPA attacks have turned out to break them. In this paper, we investigate the combination of masking and shuffling. We moreover extend the approach with the use of higher-order masking and we show that it enables to significantly improve the security level of such a scheme. We first conduct a theoretical analysis in which the efficiency of advanced DPA attacks targeting masking and shuffling is quantified. Based on this analysis, we design a generic scheme combining higher-order masking and shuffling. This scheme is scalable and its security par...
Matthieu Rivain, Emmanuel Prouff, Julien Doget
Added 25 Nov 2009
Updated 25 Nov 2009
Type Conference
Year 2009
Where CHES
Authors Matthieu Rivain, Emmanuel Prouff, Julien Doget
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