Parallel distribution and fingerprinting of digital content

Details Parallel distribution and fingerprinting of digital content Parallel distribution and fingerprinting of digital content

2006-09-19

2006-09-19

Sheikh, Ayaz (Department: 2136)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C713S177000, C726S030000, C726S032000, C726S033000, C726S026000, C380S043000, C380S203000, C709S238000

Reexamination Certificate

active

07111171

ABSTRACT:
Distributing information, including the steps of watermarking the digital content, distributing the digital content using a multi-source system, and partially fingerprinting digital content at each stage of moving information from a point of origin to the viewer. “Adaptation” of the digital content to the recipient includes maintaining the digital content in encrypted form at each such intermediate device, including decrypting the digital content with a key unique to both the device and the specific movie, selecting a portion of the watermark locations into which to embed information, embedding fingerprinting information into those locations sufficient to identify the recipient, and encrypting the fingerprinted digital content with a new such key.

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