ACAC Seminar Abstract

ACAC Seminar Abstract

ACAC Seminars

ACAC Seminar Abstract

The Buzz Lightyear Attack: To Infinity and Beyond

Speaker: Frederik Vercauteren
Date, Time: Fri, 06 May 2011 14:00

In this talk we present a novel combined attack against ECC implementations that exploits specially crafted, but valid input points. The core idea is that after fault injection, these points turn into points of very low order. Using side channel information we deduce when the point at infinity occurs during the scalar multiplication, which leaks information about the secret key. In the best case, our attack breaks a simple and differential side channel analysis resistant implementation with input/output point validity and curve parameter checks using a single query.

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