Title :
Simple cellular automata-based linear models for the shrinking generator
Author :
Fuster-Sabater, A. ; de la Guia-Martinez, D.
Author_Institution :
Inst. de Fisica Aplicada, CSIC, Madrid, Spain
Abstract :
Structural properties of two well-known families of keystream generators, shrinking generators and cellular automata, have been analyzed. Emphasis is on the equivalence of the binary sequences obtained from both kinds of generators. In fact, 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.
Keywords :
binary sequences; cellular automata; cryptography; random sequences; binary sequences; cryptanalysis; cryptography; equivalence; keystream generators; linear cellular automata; pseudorandom sequences; shrinking generator; Automata; Binary sequences; Character generation; Cryptography; Input variables; Linearity; Polynomials; Random sequences; State feedback;
Conference_Titel :
Information Theory Workshop, 2003. Proceedings. 2003 IEEE
Print_ISBN :
0-7803-7799-0
DOI :
10.1109/ITW.2003.1216715
