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This paper proposes a robustness evaluation of an RSA cryptosystem against collision attacks and correlation electromagnetic analysis. Our hardware co-processor is based on the Residue Number System (RNS) in order to perform modular operations over large numbers. To increase its robustness against Side-Channel Analysis, we implemented two different countermeasures. The first one spatially per mutates...
This paper presents a fully numeric amplitude-demodulation based technique to enhance simple electromagnetic analyses. The technique, thanks to the removal of the clock harmonics and some noise sources, allows efficiently disclosing the leaking information. It has been applied to three different modular exponentiation algorithms, mapped onto the same multiplexed architecture. The latter is able to...
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