Differential fault analysis of the advanced encryption standard using a single fault

Authors:
Michael Tunstall;Debdeep Mukhopadhyay;Subidh Ali
Affiliations:
Department of Computer Science, University of Bristol, Bristol, United Kingdom;Computer Sc. and Engg, IIT Kharagpur, India;Computer Sc. and Engg, IIT Kharagpur, India
Venue:
WISTP'11 Proceedings of the 5th IFIP WG 11.2 international conference on Information security theory and practice: security and privacy of mobile devices in wireless communication
Year:
2011

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Abstract

In this paper we present a differential fault attack that can be applied to the AES using a single fault. We demonstrate that when a single random byte fault is induced at the input of the eighth round, the AES key can be deduced using a two stage algorithm. The first step has a statistical expectation of reducing the possible key hypotheses to 232, and the second step to a mere 28.