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Digital license and method for obtaining/providing a digital license

  • US 7,136,838 B1
  • Filed: 01/13/2000
  • Issued: 11/14/2006
  • Est. Priority Date: 03/27/1999
  • Status: Expired due to Fees
First Claim
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1. A method for a server to provide to a client computer a digital license of one or more rights to render digital content, the digital content encrypted with a decryption key, the method comprising:

  • receiving, from the client computer, a license request, the license request containing a key identifier that identifies the decryption key and a client certificate associated with the client computer, the client certificate including a public key associated with the client computer;

    responsive to the request, generating a license response including a digital rights license, the decryption key identified by the key identifier, and at least one server certificate to be used by the client computer to validate the license response; and

    transmitting the license response to the client computer,wherein the generating comprises;

    applying the key identifier as an input to an algorithm by which the decryption key is produced;

    encrypting the decryption key with the public key to obtain an encrypted decryption key; and

    generating the license response including the encrypted decryption key, and at least one certificate to be used by the client computer to validate the license response.

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