A system theory approach for designing cryptosystems based on hyperchaos

Author

Grassi, Giuseppe ; Mascolo, Saverio

Author_Institution

Dipt. di Matematica, Lecce Univ., Italy

Volume

46

Issue

9

fYear

1999

fDate

9/1/1999 12:00:00 AM

Firstpage

1135

Lastpage

1138

Abstract

In this paper a general methodology for designing chaotic and hyperchaotic cryptosystems is developed. The basic idea is to make the decrypter a nonlinear observer for the state of the encrypter. Referring to this concept, some propositions are given which enable the plaintext to be retrieved if proper structural properties of the chaotic system hold. The proposed tool proves to be powerful and flexible, since a wide class of cryptosystems can be designed by exploiting different chaotic and hyperchaotic circuits. The advantages of the suggested approach are illustrated in detail. In particular, the utilization of hyperchaos-based cryptosystems, as well as the increased complexity of the transmitted signal, make a contribution to the development of communication systems with higher security

Keywords

chaos; cryptography; observers; synchronisation; system theory; telecommunication security; chaotic circuits; chaotic cryptosystems; cryptosystem design; decrypter; hyperchaotic circuits; hyperchaotic cryptosystems; nonlinear observer; plaintext retrieval; secure communication systems; system theory approach; transmitted signal complexity; Chaos; Chaotic communication; Communication system security; Communication systems; Cryptography; Design methodology; Equations; Flexible printed circuits; Oscillators; Signal generators;

fLanguage

English

Journal_Title

Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on

Publisher

ieee

ISSN

1057-7122

Type

jour

DOI

10.1109/81.788815

Filename

788815