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Practical invisibility in digital communication

Tuomas Aura
Helsinki University of Technology, FIN-02015 HUT, Finland


This paper gives an overview of cryptographically strong mass application invisibility in digital communication. It summarizes principles and methodology, clarifies terminology, and defines some new concepts. A new algorithm for hiding bit selection in digital images is proposed and an experimental implementation of the algorithm is described. Finally, the paper closes with a discussion of the implications of the availability of invisible communication.

Full paper in Postscript

  author = 	 {Tuomas Aura},
  title = 	 {Practical invisibility in digital communication},
  booktitle = 	 {Proc. First Int.\ Workshop on Information Hiding},
  volume =	 1174,
  series =	 {LNCS},
  year =	 1996,
  pages =        "265--278",
  publisher =	 {Springer Verlag}