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Communication Dans Un Congrès Année : 2005

Message-Embedded Cryptosystems: Cryptanalysis and Identifiability

Résumé

The aim of this paper is to compare two encryption schemes, the standard stream cipher and a so-called message-embedded cryptosystem. The comparison is based on two main aspects. The first aspect deals with the synchronization of the time-varying keys at the transmission side and at the reception side. The second aspect focuses on the cryptanalysis of the encryption algorithms. The cryptanalysis focuses on the system parameter retrieving. For message-embedded cryptosystems, the cryptanalysis is thus treated as a parametric identifiability issue. Two methods, the local state isomorphism approach and the Gröbner bases method, are presented for systems including polynomial nonlinearities. It is shown that these systems are weak against algebraic attack.
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Dates et versions

hal-00114178 , version 1 (15-11-2006)

Identifiants

  • HAL Id : hal-00114178 , version 1

Citer

Floriane Anstett, Gilles Millérioux, Gérard Bloch. Message-Embedded Cryptosystems: Cryptanalysis and Identifiability. 44th IEEE Conference on Decision and Control and European Control Conference, CDC-ECC'05, Sevilla, Spain, December 12-15, 2005, Dec 2005, Séville, Spain. pp.2548-2553. ⟨hal-00114178⟩
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