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Recovering lost efficiency of exponentiation algorithms on smart cards

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1 Author(s)
Joye, M. ; Gemplus Card Int., Gemenos, France

At the RSA cryptosystem implementation stage, a major security concern is resistance against so-called side-channel attacks. Solutions are known but they increase the overall complexity by a non-negligible factor (typically, a protected RSA exponentiation is 133% slower). For the first time, protected solutions are proposed that do not penalise the running time of an exponentiation

Published in:

Electronics Letters  (Volume:38 ,  Issue: 19 )