An Implementation of Key-Based Digital Signal Steganography

  • Toby Sharp
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2137)


A real-life requirement motivated this case study of secure covert communication. An independently researched process is described in detail with an emphasis on implementation issues regarding digital images. A scheme using stego keys to create pseudorandom sample sequences is developed. Issues relating to using digital signals for steganography are explored. The terms modified remainder and unmodified remainder are defined. Possible attacks are considered in detail from passive wardens and methods of defeating such attacks are suggested. Software implementing the new ideas is introduced, which has been successfully developed, deployed and used for several years without detection.


Cover Image Secret Message Quantization Noise Cover Signal Secret Data 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2001

Authors and Affiliations

  • Toby Sharp
    • 1
  1. 1.NottinghamEngland

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