Cryptology ePrint Archive: Report 2004/145

Electromagnetic Side Channels of an FPGA Implementation of AES

Vincent Carlier, Hervé Chabanne, Emmanuelle Dottax and Hervé Pelletier

Abstract: We show how to attack an FPGA implementation of AES where all bytes are processed in parallel using differential electromagnetic analysis. We first focus on exploiting local side channels to isolate the behaviour of our targeted byte. Then, generalizing the Square attack, we describe a new way of retrieving information, mixing algebraic properties and physical observations.

Category / Keywords: implementation / AES, side-channel attacks

Date: received 21 Jun 2004, last revised 30 Jun 2004

Contact author: Emmanuelle Dottax at sagem com

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Version: 20040630:131924 (All versions of this report)

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