Cryptology ePrint Archive: Report 2015/801

Scalar Blinding on Elliptic Curves based on Primes with Special Structure

Scott Fluhrer

Abstract: This paper shows how scalar blinding can provide protection against side channel attacks when performing elliptic curve operations with modest cost, even if the characteristic of the field has a sparse representation. This may indicate that, for hardware implementations, random primes might not have as large of an advantage over special primes as previously claimed.

Category / Keywords: public-key cryptography / elliptic curve cryptosystem

Date: received 10 Aug 2015, last revised 11 Aug 2015

Contact author: sfluhrer at cisco com

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Version: 20190305:124745 (All versions of this report)

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