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International Conference on Cryptology and Network Security

CANS 2013: Cryptology and Network Security pp 1–19Cite as

Differential Attacks on Generalized Feistel Schemes

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Part of the book series: Lecture Notes in Computer Science ((LNSC,volume 8257))

Abstract

While generic attacks on classical Feistel schemes and unbalanced Feistel schemes have been studied a lot, generic attacks on several generalized Feistel schemes like type-1, type-2 and type-3 and alternating Feistel schemes, as defined in [8], have not been systematically investigated. These generalized Feistel schemes are used in well known block cipher networks that use generalized Feistel schemes: CAST-256 (type-1), RC-6 (type-2), MARS (type-3) and BEAR/LION (alternating). Also, type-1 and type-2 Feistel schemes are respectively used in the construction of the hash functions Lesamnta and SHAvite − 3512.In this paper, we give our best Known Plaintext Attacks and non-adaptive Chosen Plaintext Attacks on these schemes. We determine the maximal number of rounds that we can attack when we want to distinguish a permutation produced by the scheme from a permutation chosen randomly in the set of permutations.

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Author information

Authors and Affiliations

  1. Department of Mathematics, University of Cergy-Pontoise, CNRS UMR 8088, 2 Avenue Adolphe Chauvin, 95011, Cergy-Pontoise Cedex, France

    Valérie Nachef & Emmanuel Volte

  2. PRISM, University of Versailles, 45 avenue des Etats-Unis, 78035, Versailles Cedex, France

    Jacques Patarin

Authors
  1. Valérie Nachef
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  2. Emmanuel Volte
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  3. Jacques Patarin
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Editor information

Editors and Affiliations

  1. École Normale Supérieure and CNRS,, 45 rue d’Ulm, 75005, Paris, France

    Michel Abdalla

  2. Department of Computer Science, Purdue University, LWSN 2142J, 305 N. University Street,, 47907, West Lafayette, IN, USA

    Cristina Nita-Rotaru

  3. Institute of Computing, University of Campinas, Avenida Albert Einstein 1251, 13083-852, Campinas, SP, Brazil

    Ricardo Dahab

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Nachef, V., Volte, E., Patarin, J. (2013). Differential Attacks on Generalized Feistel Schemes. In: Abdalla, M., Nita-Rotaru, C., Dahab, R. (eds) Cryptology and Network Security. CANS 2013. Lecture Notes in Computer Science, vol 8257. Springer, Cham. https://doi.org/10.1007/978-3-319-02937-5_1

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  • DOI: https://doi.org/10.1007/978-3-319-02937-5_1

  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-02936-8

  • Online ISBN: 978-3-319-02937-5

  • eBook Packages: Computer ScienceComputer Science (R0)

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