METHOD TO SECURELY EXECUTE A MODULAR EXPONENTIATION

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United States of America Patent

APP PUB NO 20160077806A1
SERIAL NO

14784505

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Abstract

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The present invention relates to a method to execute a modular exponentiation R=Xe mod N, said method implementing several variable registers and an indicator register m and performing looped calculations. In the invention each loop includes at least two operations from values stored in variable registers, said operations depending on the value stored in m and on the value of the bit(s) of the exponent currently processed, m indicating if the calculation is completed for the current exponent bit at the end of the operations in the current loop.

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Patent Owner(s)

Patent OwnerAddress
GEMALTO SA92197 MEUDON CEDEX

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
HAMZI, Nabil La Ciotat, FR 5 1
VILLEGAS, Karine La Ciotat, FR 28 52

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