Patents by Inventor Oscar David Sanchez Diaz

Oscar David Sanchez Diaz 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).

  • Security processor for an embedded system
    Patent number: 10719606
    Abstract: Dynamic Trust Manager (DTM) having an interface coupled to an embedded system including an Application Processor (AP), boot media, and security processor. The security processor, at a start of a boot sequence of the AP, prevents the AP from proceeding with the boot sequence, verifies bootloader code stored in the boot media via boot media access, and if the bootloader code verification is successful, allows the AP to proceed using the verified bootloader code. The security processor may also be configured to activate an interrupt request of the AP during runtime, request the AP to execute a Security Monitor Driver (SMD) of the embedded system to measure an integrity information of code/data stored in an embedded system memory, receive from the SMD the measured integrity information of code/data, and verify whether the measured integrity information equals a reference integrity information stored in an integrity table of a DTM memory.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: July 21, 2020
    Assignee: Infineon Technologies AG
    Inventors: Oscar David Sanchez Diaz, Jurijus Cizas, Jeffrey Kelley, Mark Stafford
  • SECURITY PROCESSOR FOR AN EMBEDDED SYSTEM
    Publication number: 20190266331
    Abstract: Dynamic Trust Manager (DTM) having an interface coupled to an embedded system including an Application Processor (AP), boot media, and security processor. The security processor, at a start of a boot sequence of the AP, prevents the AP from proceeding with the boot sequence, verifies bootloader code stored in the boot media via boot media access, and if the bootloader code verification is successful, allows the AP to proceed using the verified bootloader code. The security processor may also be configured to activate an interrupt request of the AP during runtime, request the AP to execute a Security Monitor Driver (SMD) of the embedded system to measure an integrity information of code/data stored in an embedded system memory, receive from the SMD the measured integrity information of code/data, and verify whether the measured integrity information equals a reference integrity information stored in an integrity table of a DTM memory.
    Type: Application
    Filed: February 23, 2018
    Publication date: August 29, 2019
    Inventors: Oscar David Sanchez Diaz, Jurijus Cizas, Jeffrey Kelley, Mark Stafford