Cryptanalysis of ARMADILLO2 - Inria - Institut national de recherche en sciences et technologies du numérique Accéder directement au contenu
Communication Dans Un Congrès Année : 2011

Cryptanalysis of ARMADILLO2

Résumé

ARMADILLO2 is the recommended variant of a multi-purpose cryptographic primitive dedicated to hardware which has been proposed by Badel et al. in [1]. In this paper we propose a meet-in-the-middle technique that allows us to invert the ARMADILLO2 function. Using this technique we are able to perform a key recovery attack on ARMADILLO2 in FIL-MAC application mode. A variant of this attack can also be applied when ARMADILLO2 is used as a stream cipher in the PRNG application mode. Finally we propose a (second) preimage attack on its hashing application mode. We have validated our attacks by implementing cryptanalysis on scaled variants that match the theoretical predicted complexities. All the cryptanalysis presented in this paper can be applied for any arbitrary bitwise permutations $σ_0$ and $σ_1$ used in the internal permutation.
Fichier principal
Vignette du fichier
Armadillov2.pdf (263.76 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

inria-00619236 , version 1 (29-02-2012)

Identifiants

Citer

Mohamed Ahmed Abdelraheem, Céline Blondeau, Maria Naya-Plasencia, Marion Videau, Erik Zenner. Cryptanalysis of ARMADILLO2. Advances in cryptology - ASIACRYPT 2011, Dec 2011, Séoul, South Korea. pp.308-326, ⟨10.1007/978-3-642-25385-0⟩. ⟨inria-00619236⟩
238 Consultations
196 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More