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Abstract: In this work, pseudorandom sequence generators based on finite fields havebeen analyzed from the point of view of their cryptographic application. Infact, a class of nonlinear sequence generators has been modelled in terms oflinear cellular automata. The algorithm that converts the given generator intoa linear model based on automata is very simple and is based on theconcatenation of a basic structure. Once the generator has been linearized, acryptanalytic attack that exploits the weaknesses of such a model has beendeveloped. Linear cellular structures easily model sequence generators withapplication in stream cipher cryptography.



Author: Amparo Fuster-Sabater, Pino Caballero-Gil

Source: https://arxiv.org/







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