Watermarking technologies have received a considerable attention from both the academic and the industrial worlds lately. The first very large scale deployment
of a intellectual property protection system relying on watermarking might be
led by the Secure Digital Music Initiative consortium (SDMI). On September
6th 2000, the Executive Director of the SDMI group published an ``open letter
to the digital community'' [
otSg], where he invited hackers to
try to break the technologies developed by several members of the SDMI group.
In this paper, we present the detailed analysis of one of the proposed
watermarking schemes, and explain how to defeat it.
