Perpetual Masking For Secure Watermark Embedding
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United States of America Patent
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Issued Date -
Oct 2, 2008
app pub date -
Nov 6, 2006
filing date -
Nov 17, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Disclosed are a method and a system for secure watermark embedding in a server-client configuration (60,70). The method comprises encrypting (210) the data signal (x) and generating (240) a decryption key wherein a watermark (W.sub.i) is included. The client decrypts (420) the encrypted data signal in order to obtain a watermarked data signal (x.sub.w). In accordance with the invention, the encryption mechanism and decryption key are made dependent on a perceptual mask (m.sub.1,m.sub.2) so as eventually make the embedded watermark more robust.
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