Secure Hardware Implementation of Nonlinear Functions in the Presence of Glitches |
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Authors: | Svetla Nikova Vincent Rijmen Martin Schl?ffer |
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Affiliation: | (1) Computer Science Department, University of Bristol, Bristol, BS8 1UB, UK;(2) Institute for Applied Information Processing and Communication, Graz University of Technology, Inffeldgasse 16a, 8010 Graz, Austria;(3) Infineon Technologies AG, Security Innovation, Am Campeon, 1-1285579 Neubiberg, Germany |
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Abstract: | Hardware implementations of cryptographic algorithms are vulnerable to side-channel attacks. Side-channel attacks that are
based on multiple measurements of the same operation can be countered by employing masking techniques. Many protection measures
depart from an idealized hardware model that is very expensive to meet with real hardware. In particular, the presence of
glitches causes many masking techniques to leak information during the computation of nonlinear functions. We discuss a recently
introduced masking method which is based on secret sharing and multi-party computation methods. The approach results in implementations
that are provably resistant against a wide range of attacks, while making only minimal assumptions on the hardware. We show
how to use this method to derive secure implementations of some nonlinear building blocks for cryptographic algorithms. Finally,
we provide a provable secure implementation of the block cipher Noekeon and verify the results by means of low-level simulations. |
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