Method of Performing a Modular Multiplication and Method of Performing a Euclidean Multiplication Using Numbers with 2N Bits

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United States of America Patent

APP PUB NO 20080063184A1
SERIAL NO

10568749

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The invention relates to method of performing a modular multiplication using numbers with 2n bits. The method includes the steps of breaking the numbers (A, B) down into a 2.sup.n base or a U base, U being a suitable integer; and, subsequently, performing MultModDiv--and/or MultModDivlnit-type elementary operations on the numbers with n bits resulting from the first step. The invention also relates to a method of calculating a Euclidean multiplication/division. The invention can be used for cryptographic calculations.

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Patent Owner(s)

Patent OwnerAddress
GEMPLUSPARC D'ACTIVITIES DE GEMENOS AVENUE DU PIC DE BERTAGNE GEMENOS 13420

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chevallier-Mames, Benoit Cassis, FR 52 412
Joye, Marc Saint Zacharie, FR 93 598
Paillier, Pascal Paris, FR 28 248

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