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.
Coelho A.R.
Monteiro L.H.A.
Orientador
Título da Revista
ISSN da Revista
Título de Volume
Membros da banca
Programa
Resumo
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.