Patents by Inventor Trang N. Huynh

Trang N. Huynh 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).

  • Method to enhance platform firmware security for logical partition data processing systems by dynamic restriction of available external interfaces
    Patent number: 7954156
    Abstract: A system and method to reduce external access to hypervisor interfaces in a computer system, thereby reducing the possibility of attacks. In a preferred embodiment, addresses for calls are used to fill a table, where the addresses are specifically selected for a requesting computer. For example, in one embodiment, a routine searches for the adapter type of a requesting computer and populates the table with calls specific to that type of adapter. Other types of calls are not put in the table. Instead, those calls are replaced by routines that will return an error. In other embodiments, the operating system type is used to determine what addresses are used to populate the table. These and other embodiments are explained more fully below.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: May 31, 2011
    Assignee: International Business Machines Corporation
    Inventors: Trang N. Huynh, Gordon D. McIntosh
  • Method to Enhance Platform Firmware Security for Logical Partition Data Processing Systems by Dynamic Restriction of Available External Interfaces
    Publication number: 20090265783
    Abstract: A system and method to reduce external access to hypervisor interfaces in a computer system, thereby reducing the possibility of attacks. In a preferred embodiment, addresses for calls are used to fill a table, where the addresses are specifically selected for a requesting computer. For example, in one embodiment, a routine searches for the adapter type of a requesting computer and populates the table with calls specific to that type of adapter. Other types of calls are not put in the table. Instead, those calls are replaced by routines that will return an error. In other embodiments, the operating system type is used to determine what addresses are used to populate the table. These and other embodiments are explained more fully below.
    Type: Application
    Filed: July 7, 2009
    Publication date: October 22, 2009
    Applicant: International Business Machines Corporation
    Inventors: Trang N. Huynh, Gordon D. McIntosh
  • Method to enhance platform firmware security for logical partition data processing systems by dynamic restriction of available external interfaces
    Patent number: 7577991
    Abstract: A system and method to reduce external access to hypervisor interfaces in a computer system, thereby reducing the possibility of attacks. In a preferred embodiment, addresses for calls are used to fill a table, where the addresses are specifically selected for a requesting computer. For example, in one embodiment, a routine searches for the adapter type of a requesting computer and populates the table with calls specific to that type of adapter. Other types of calls are not put in the table. Instead, those calls are replaced by routines that will return an error. In other embodiments, the operating system type is used to determine what addresses are used to populate the table. These and other embodiments are explained more fully below.
    Type: Grant
    Filed: July 22, 2004
    Date of Patent: August 18, 2009
    Assignee: International Business Machines Corporation
    Inventors: Trang N. Huynh, Gordon D. McIntosh