IACR News item: 01 January 2013
E. Brier, Q. Fortier, R. Korkikian, K. W. Magld, D. Naccache, G. Ozari de Almeida, A. Pommellet, A. H. Ragab, J. Vuillemin
ePrint ReportThe defense strategy described in this paper pairs each useful data element $k$ with a camouflage value $v$ and simultaneously transmits both $k$ and $v$ over the channel. This releases an emission $e(k,v)$. We wish to select the camouflage values $v(k)$ as a function of $k$ in a way that makes the quantities $e(k,v(k))$ as {\\sl indistinguishable} as possible from each other.
We model the problem and show that optimal camouflage values can be computed from side-channels under very weak physical assumptions. The proposed technique is hence applicable to a wide range of readily available technologies.
We propose algorithms for computing optimal camouflage values when the number of samples per trace is moderate (typically $\\leq 6$) and justify our models by a statistical analysis.
We also provide experimental results obtained using FPGAs.
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