Paper Info
Title
On the simplicity of converting leakages from multivariate to univariate: case study of a glitch-resistant masking scheme
Abstract
Several masking schemes to protect cryptographic implementations against side-channel attacks have been proposed. A few considered the glitches, and provided security proofs in presence of such inherent phenomena happening in logic circuits. One which is based on multi-party computation protocols and utilizes Shamir's secret sharing scheme was presented at CHES 2011. It aims at providing security for hardware implementations --- mainly of AES --- against those sophisticated side-channel attacks that also take glitches into account. One part of this article deals with the practical issues and relevance of the aforementioned masking scheme. Following the recommendations given in the extended version of the mentioned article, we first provide a guideline on how to implement the scheme for the simplest settings. Constructing an exemplary design of the scheme, we provide practical side-channel evaluations based on a Virtex-5 FPGA. Our results demonstrate that the implemented scheme is indeed secure against univariate power analysis attacks given a basic measurement setup. In the second part of this paper we show how using very simple changes in the measurement setup opens the possibility to exploit multivariate leakages while still performing a univariate attack. Using these techniques the scheme under evaluation can be defeated using only a moderate number of measurements. This is applicable not only to the scheme showcased here, but also to most other known masking schemes where the shares of sensitive values are processed in adjacent clock cycles.
Year
DOI
Venue
2013
10.1007/978-3-642-40349-1_1
IACR Cryptology ePrint Archive
Keywords
DocType
Volume
sophisticated side-channel attack,basic measurement setup,aforementioned masking scheme,measurement setup,masking scheme,article deal,practical side-channel evaluation,practical issue,side-channel attack,glitch-resistant masking scheme,case study,secret sharing scheme
Conference
2012
ISSN
Citations 
PageRank 
0302-9743
13
0.68
References 
Authors
23
2
Name
Order
Citations
PageRank
Amir Moradi196080.66
Oliver Mischke220411.53