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System and method for authorized compression of digitized music

  • US 7,082,413 B2
  • Filed: 11/24/1999
  • Issued: 07/25/2006
  • Est. Priority Date: 11/24/1999
  • Status: Expired due to Fees
First Claim
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1. A computer program storage device including a program of instructions for determining whether a request to compress and record digitized music should be honored, the program of instructions including:

  • means for processing at least one segment of the music to obtain a test digital signature by applying a cryptographic hash solely to the segment without applying a user identification;

    means for receiving an authorized digital signature associated with the music; and

    means for permitting compression and recording of the music only if at least the test digital signature matches the authorized digital signature.

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