×

Multiple authority key derivation

  • US 10,425,223 B2
  • Filed: 05/18/2018
  • Issued: 09/24/2019
  • Est. Priority Date: 03/27/2012
  • Status: Active Grant
First Claim
Patent Images

1. A computer-implemented method, comprising:

  • generating a key hierarchy that comprises a root key and a plurality of levels of subordinate keys, a first level of the plurality of levels including a first subordinate key derived from the root key and associated with a first usage restriction, and a second level of the plurality of levels including a second subordinate key derived from the first subordinate key and associated with a second usage restriction that includes the first usage restriction;

    receiving a request having been encrypted using the second subordinate key;

    determining that the request indicates non-compliance with at least one of the first usage restriction or the second usage restriction; and

    denying the request as a result of the non-compliance.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×