On the security of a copyright protection scheme based on visual cryptography

Tzung Her Chen, Chin Chen Chang, Chang Sian Wu, Der Chyuan Lou

Research output: Contribution to journalReview articlepeer-review

34 Scopus citations

Abstract

With copyright protection in mind, the robustness property of a new scheme is always one of main concerns. However, to claim robustness of watermarking techniques is meaningful only when the false positive probability is taken into consideration as well as robustness benchmark. In this paper, the security of a robust copyright-protection scheme based on visual cryptography proposed by Lou et al. is analyzed. We show that the false alarm of their scheme is not neglectable. Precisely, it is insecure since the verification watermark can be unreasonably extracted from other unprotected images using the identical secret key by the owner. The main weak design will be proved and shown by means of giving theoretical analysis and conducting some counter experiments.

Original languageEnglish
Pages (from-to)1-5
Number of pages5
JournalComputer Standards and Interfaces
Volume31
Issue number1
DOIs
StatePublished - 01 2009
Externally publishedYes

Keywords

  • Copyright protection
  • Digital watermarking
  • Discrete wavelet transform
  • False positive error

Fingerprint

Dive into the research topics of 'On the security of a copyright protection scheme based on visual cryptography'. Together they form a unique fingerprint.

Cite this