Audio watermarking with covert channel and permutations

Details Audio watermarking with covert channel and permutations Audio watermarking with covert channel and permutations

2000-07-12

2009-06-02

Colin, Carl (Department: 2136)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C380S238000, C380S239000

Reexamination Certificate

active

07543148

ABSTRACT:
Audio signals, such as a music clip, are inserted with detectable watermarks. The inserted watermark can identify the content producer and provide a signature embedded in the audio signal and cannot be removed. The watermark can survive all typical kinds of processing and malicious attacks. The watermark can be implemented in a watermarking system that employs a covert channel encoder to layer an additional information data message or covert message on top of the watermark. The watermarking system can also include a permutation technique to further hide the watermark and hide the covert message within the watermark.

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