Cryptography with Chaos at the Physical Level

Celso Grebogi, M. S. Baptista, R. F. Machado

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

In this work, we devise a chaos-based secret key cryptography scheme for digital communication where the encryption is realized at the physical level, that is, the encrypting transformations are applied to the wave signal instead to the symbolic sequence. The encryption process consists of transformations applied to a two-dimensional signal composed of the message carrying signal and an encrypting signal that has to be a chaotic one. The secret key, in this case, is related to the number of times the transformations are applied. Furthermore, we show that due to its chaotic nature, the encrypting signal is able to hide the statistics of the original signal. (C) 2004 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)1265-1269
Number of pages4
JournalChaos, Solitons & Fractals
Volume21
DOIs
Publication statusPublished - 2004

Keywords

  • ENCRYPTION SYSTEMS
  • COMMUNICATION
  • SCHEME
  • MAP

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