Secure public digital watermark
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United States of America Patent
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Aug 28, 2001
Grant Date -
N/A
app pub date -
Jan 25, 1999
filing date -
Jan 25, 1999
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A cryptographic device and corresponding method for producing a cloaked watermark which is a private watermark having the functionality of a public watermark. In one embodiment, the cryptographic device comprises an internal memory and a processor contained in a package. The internal memory provides a region for storage of key information used at least to produce the cloaked watermark. The processor is coupled to the internal memory and is responsible for producing a cloaked watermark based on the key and for inserting the cloaked watermark into an outgoing data set.
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