Differential Fault Analysis of the Advanced Encryption Standard Using a Single Fault

Michael Tunstall (1) , Debdeep Mukhopadhyay (2) , Subidh Ali (2)

1 University of Bristol [Bristol]
2 IIT Kharagpur - Indian Institute of Technology Kharagpur

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.

Mots clés: Differential Fault Analysis; Fault Attack; Advanced Encryption Standard

Domaines: Informatique [cs]

Michael Tunstall, Debdeep Mukhopadhyay, Subidh Ali. Differential Fault Analysis of the Advanced Encryption Standard Using a Single Fault. 5th Workshop on Information Security Theory and Practices (WISTP), Jun 2011, Heraklion, Crete, Greece. pp.224-233, ⟨10.1007/978-3-642-21040-2_15⟩. ⟨hal-01573310⟩