Capacity is the wrong paradigm

@inproceedings{Moskowitz2002CapacityIT,
  title={Capacity is the wrong paradigm},
  author={Ira S. Moskowitz and LiWu Chang and Richard E. Newman},
  booktitle={NSPW},
  year={2002}
}
At present, "capacity" is the prevailing paradigm for covert channels. With respect to steganography, however, capacity is at best insufficient, and at worst, is incorrect. In this paper, we propose a new paradigm called "capability" which gauges the effectiveness of a steganographic method. It includes payload carrying ability, detectability, and robustness components. We also discuss the use of zero-error capacity for channel analysis and demonstrate that a JPEG compressed image always has… CONTINUE READING
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