Cellular automata cryptographic model based on bi-directional toggle rules

Tipo
Artigo
Data de publicação
2004
Periódico
International Journal of Modern Physics C
Citações (Scopus)
11
Autores
Oliveira G.M.B.
Coelho A.R.
Monteiro L.H.A.
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Cellular automata, (CA) are discrete dynamical systems that call be employed as cryptography algorithms. Irreversible CA with toggle rules - either to the right or to the left - were already proposed for encrypting. However, the similarity between ciphertexts when the plaintext is submitted to a small perturbation was identified as a flaw in this model. Here, such a model is altered by using bi-directional toggle CA rules instead of one-directional ones. Numerical experiments showed that the similarity flaw was eliminated by considering this modification, obtaining protection against differential cryptanalysis.
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