Chapter

Information Hiding

Volume 1525 of the series Lecture Notes in Computer Science pp 258-272

Date:

Analysis of the Sensitivity Attack against Electronic Watermarks in Images

  • Jean -Paul M. G. LinnartzAffiliated withEindhoven Philips Research Laboratories (Natlab)
  • , Marten van DijkAffiliated withEindhoven Philips Research Laboratories (Natlab)

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Abstract

In some applications of electronic watermarks, the device that detects whether content contains a watermark or not is in public domain. Attackers can misuse such detector as an oracle that reveals up to one bit of information about the watermark in each experiment. An information-theoretical analysis of the information leakage is provided, and a method is proposed to reduce the information leakage by orders of magnitude.

keywords

Cryptanalysis Copy Protection Electronic Watermarks