Novel orbit based symmetric cryptosystems

Authors:
M. N. Vrahatis;G. A. Tsirogiannis;E. C. Laskari
Affiliations:
Computational Intelligence Laboratory, Department of Mathematics, University of Patras, GR-26110 Patras, Greece and University of Patras Artificial Intelligence Research Center (UPAIRC), Universit ...;Department of Engineering Sciences, University of Patras, GR-26110 Patras, Greece and University of Patras Artificial Intelligence Research Center (UPAIRC), University of Patras, GR-26110 Patras, ...;Computational Intelligence Laboratory, Department of Mathematics, University of Patras, GR-26110 Patras, Greece and University of Patras Artificial Intelligence Research Center (UPAIRC), Universit ...
Venue:
Mathematical and Computer Modelling: An International Journal
Year:
2010

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Abstract

During the last few years considerable effort has been devoted to research related to chaotic encryption. In this paper a new symmetric key cryptosystem that exploits the idea of nonlinear mappings and their fixed points to encrypt information is presented. Furthermore, a measure of the quality of the keys used is introduced. The experimental results indicate that the proposed cryptosystem is efficient and secure to ciphertext-only attacks. Finally, three modifications of the basic cryptosystem that render it more robust are presented and efficiency issues are discussed.