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Template Attacks on Masking—Resistance Is Futile

Authors: Elisabeth Oswald; Stefan Mangard;

Template Attacks on Masking—Resistance Is Futile

Abstract

In this article we discuss different types of template attacks on masked implementations. All template attacks that we describe are applied in practice to a masked AES software implementation on an 8-bit microcontroller. They all break this implementation. However, they all require quite a different number of traces. It turns out that a template-based DPA attack leads to the best results. In fact, a template-based DPA attack is the most natural way to apply a template attack to a masked implementation. It can recover the key from about 15 traces. All other attacks that we present perform worse. They require between about 30 and 1800 traces. There is no difference between the application of a template-based DPA attack to an unmasked and to a masked implementation. Hence, we conclude that in the scenario of template attacks, masking does not improve the security of an implementation.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
67
Top 10%
Top 1%
Top 10%
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