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How a symmetry metric assists side-channel evaluation

A novel model verification method for power analysis
: Heuser, A.; Kasper, M.; Schindler, W.; Stöttinger, M.


Kitsos, P. ; European Organisation for Information Technology and Microelectronics -EUROMICRO-:
2011 14th Euromicro Conference on Digital System Design (DSD 2011) : Oulu, Finland, 31 August - 2 September 2011
Piscataway, NJ: IEEE, 2011
ISBN: 978-1-457-71048-3
ISBN: 978-0-7695-4494-6
Euromicro Conference on Digital System Design (DSD) <14, 2011, Oulu>
Fraunhofer SIT ()

Side-channel analysis has become an important field of research for the semiconductor industry and for the academic sector as well. Of particular interest is constructive side-channel analysis as it supports a target-oriented associated design process. The main goal is to increase the side-channel resistance of cryptographic implementations within the design phase by a combination of advanced stochastic methods with design methods, tools, and countermeasures. In this contribution we present a new enhanced tool that utilizes symmetry properties to assist the side-channel evaluation of cryptographic implementations. This technique applies a symmetry metric, which is introduced as an engineering tool to verify the suitability of the leakage model in the evaluation phase of security-sensitive designs. Additionally, this approach also supports the designer in the selection of appropriate time instants.