Patents by Inventor Shangping Ren

Shangping Ren has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Refined permission constraints using internal and external data extraction in a role-based access control system
    Patent number: 8271527
    Abstract: The present invention can enable increasing refinement of role-based permission to access data within a Role Based Access Control (RBAC) controlled computer system by enabling constraints to be written on the role-based permissions. The constraints may utilize each and every type or combination of subject, object, or environment information extracted from sources internal or external to the controlled computer system and may evaluate the content or context of the information extracted to enable refined and dynamic access after the role permission assignment and immediately before every access grant without the reassignment of roles.
    Type: Grant
    Filed: August 26, 2004
    Date of Patent: September 18, 2012
    Assignee: Illinois Institute of Technology
    Inventors: Ophir Frieder, Shangping Ren
  • Refined permission constraints using internal and external data extraction in a role-based access control system
    Publication number: 20060047657
    Abstract: The present invention can enable increasing refinement of role-based permission to access data within a Role Based Access Control (RBAC) controlled computer system by enabling constraints to be written on the role-based permissions. The constraints may utilize each and every type or combination of subject, object, or environment information extracted from sources internal or external to the controlled computer system and may evaluate the content or context of the information extracted to enable refined and dynamic access after the role permission assignment and immediately before every access grant without the reassignment of roles.
    Type: Application
    Filed: August 26, 2004
    Publication date: March 2, 2006
    Inventors: Ophir Frieder, Shangping Ren