×

Tethered device systems and methods

  • US 10,078,873 B2
  • Filed: 08/01/2016
  • Issued: 09/18/2018
  • Est. Priority Date: 07/23/2007
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method of exporting a license from a host device to a target device, the license for use in governing access to or other use of a piece of electronic content, the method comprising:

  • accessing a license associated with a piece of electronic content;

    generating a simple validity statement data structure associated with the piece of electronic content based, at least in part, on the license, wherein generating the simple validity statement data structure comprises;

    encrypting a content key configured to decrypt the piece of electronic content using a first key;

    identifying, based on the license, one or more conditions relating to use of the piece of electronic content;

    determining that the identified one or more conditions make reference to at least one node;

    generating a simple validity statement record based on the identified one or more conditions;

    including the encrypted content key and the simple validity statement record in the simple validity statement data structure;

    generating one or more link validity statement records; and

    including the one or more link validity statement records in the simple validity statement data structure;

    digitally signing at least part of the simple validity statement data structure using a second key; and

    transmitting the simple validity statement data structure to the target device.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×