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In this paper, we provide a comprehensive study of elliptic curve cryptography (ECC) for wireless sensor networks (WSN) security provisioning, mainly for key management and authentication modules. On the other hand, we present and evaluate a side-channel attacks (SCAs) experimental bench solution for energy evaluation, especially simple power analysis (SPA) attacks experimental bench to measure dynamic power consumption of ECC operations. The goal is the best use of the already installed SCAs experimental bench by performing the robustness test of ECC devices against SPA as well as the estimate of its energy and dynamic power consumption. Both operations are tested: point multiplication over Koblitz curves and doubling points over binary curves, with respectively affine and projective coordinates. The experimental results and its comparison with simulation ones are presented. They can lead to accurate power evaluation with the maximum reached error less than 30%.

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