Pitfalls in Public Key Watermarking

  title={Pitfalls in Public Key Watermarking},
  author={Paulo S. L. M. Barreto and Hae Yong Kim},
The cryptographic concept of digital signatures is well suited to image watermarking for authentication and integrity veri cation. However, the peculiar nature of watermarks demands special care in the application of digital signatures for this purpose. Here we cryptanalyze a recently proposed watermarking scheme and show how it can be strengthened to thwart our attacks, exploring the use of hashing function contexts and signature algorithms based on elliptic curve cryptography. 

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