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handle: 10261/8875
Structural properties of a particular kind of LFSR-based generators, the shrinking generators, have been characterized and their cryptographic properties (period, linear complexity, characteristic polynomial) have been analyzed. Shrinking Generators (SG) can be identified with a subset of linear Cellular Automata (mainly rule 90, rule 150 or a hybrid combination of both rules). The linearity of these cellular models can be advantageously used in the cryptanalysis of those keystream generators.
5 pages, 1 figure.-- Communication presented at the 6th World Multiconference on Systemics, Cybernetics and Informatics and 8th International Conference on Information System Analysis and Synthesis (SCI/ISAS 2002, Orlando, Florida, Jul 14-18, 2002).
Supported by Ministerio de Ciencia y Tecnología (Spain) under grant TIC2001-0586.
Peer reviewed
Cellular automata, Cryptanalysis, Pseudorandom sequence, Shrinking generator, LFSR, Cryptography
Cellular automata, Cryptanalysis, Pseudorandom sequence, Shrinking generator, LFSR, Cryptography
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