Enforcement and policing of licensed content using content-based identifiers

  • US 6,928,442 B2
  • Filed: 11/15/2001
  • Issued: 08/09/2005
  • Est. Priority Date: 04/11/1995
  • Status: Expired due to Term
First Claim
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1. In a system in which a plurality of files are distributed across a plurality of computers, a method comprising:

  • obtaining a name for a data file, the name being based at least in part on a given function of the data, wherein the data used by the given function to determine the name comprises the contents of the data file; and

    in response to a request for the a data file, the request including at least the name of the particular file, causing a copy of the file to be provided from a given one of the plurality of computers, wherein a copy of the requested file is only provided to licensed parties.

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