An application of the O'Nan-Scott theorem to the group generated by the round functions of an AES-like cipher

  • Authors:
  • A. Caranti;Francesca Dalla Volta;M. Sala

  • Affiliations:
  • Dipartimento di Matematica, Università degli Studi di Trento, Povo, Trento, Italy 38050;Dipartimento di Matematica e Applicazioni, Edificio U5, Università degli Studi di Milano-Bicocca, Milano, Italy 20125;Dipartimento di Matematica, Università degli Studi di Trento, Povo, Trento, Italy 38050

  • Venue:
  • Designs, Codes and Cryptography
  • Year:
  • 2009

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Abstract

In a previous paper, we had proved that the permutation group generated by the round functions of an AES-like cipher is primitive. Here we apply the O'Nan Scott classification of primitive groups to prove that this group is the alternating group.