Efficient implementation of a CCA2-secure variant of McEliece using generalized Srivastava codes

Pierre-Louis Cayrel 1 Gerhard Hoffmann 2 Edoardo Persichetti 3
1 LHC - Laboratoire Hubert Curien [Saint Etienne]
2 CASED - Center for Advanced Security Research Darmstadt [Darmstadt]
3 University of Auckland [Auckland]
Abstract : In this paper we present efficient implementations of McEliece variants using quasi-dyadic codes. We provide secure parameters for a classical McEliece encryption scheme based on quasi-dyadic generalized Srivastava codes, and successively convert our scheme to a CCA2-secure protocol in the random oracle model applying the Fujisaki-Okamoto transform. In contrast with all other CCA2-secure code-based cryptosystems that work in the random oracle model, our conversion does not require a constant weight encoding function. We present results for both 128-bit and 80-bit security level, and for the latter we also feature an implementation for an embedded device.
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Fischlin, Marc; Buchmann, Johannes; Manulis, Mark (Eds.). The 15th IACR International Conference on Practice and Theory of Public-Key Cryptography - PKC 2012, May 2012, Darmstadt, Germany. Springer-Verlag, 7293, pp.138-155, 2012, LNCS
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Pierre-Louis Cayrel, Gerhard Hoffmann, Edoardo Persichetti. Efficient implementation of a CCA2-secure variant of McEliece using generalized Srivastava codes. Fischlin, Marc; Buchmann, Johannes; Manulis, Mark (Eds.). The 15th IACR International Conference on Practice and Theory of Public-Key Cryptography - PKC 2012, May 2012, Darmstadt, Germany. Springer-Verlag, 7293, pp.138-155, 2012, LNCS. 〈ujm-00712875〉

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