Abstract
This work shows that sequences generated by a class of linear cellular automata equal output sequences of certain nonlinear sequence generators. A simple modelling process for obtaining the automata from a partial description of such generators is here described. Furthermore, a method that uses the linearity of these cellular models for reconstructing some deterministic bits of the keystream sequence is presented.
Research supported by the Spanish Ministry of Education and Science and the European FEDER Fund under Projects SEG2004-02418 and SEG2004-04352-C04-03.
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Fúster-Sabater, A., Caballero-Gil, P. (2006). Concatenated Automata in Cryptanalysis of Stream Ciphers. In: El Yacoubi, S., Chopard, B., Bandini, S. (eds) Cellular Automata. ACRI 2006. Lecture Notes in Computer Science, vol 4173. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11861201_71
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DOI: https://doi.org/10.1007/11861201_71
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