Patents by Inventor Colin DOAK

Colin DOAK 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).

  • Measured restart of microcontrollers
    Patent number: 12164640
    Abstract: In various examples there is a computing device comprising: a first microcontroller comprising a first immutable bootloader and first mutable firmware. The first immutable bootloader uses a unique device secret burnt into hardware of the computing device in order to generate an attestation of the first mutable firmware. The computing device has a second microcontroller. There is second mutable firmware at the second microcontroller. There is a second immutable bootloader at the second microcontroller which sends a measurement of the second mutable firmware to the first immutable bootloader whenever the second microcontroller restarts, such that the first microcontroller is able to include the measurement in the attestation.
    Type: Grant
    Filed: November 13, 2023
    Date of Patent: December 10, 2024
    Assignee: Microsoft Technology Licensing, LLC.
    Inventors: Stavros Volos, Colin Doak, Simon Douglas Chambers, David Ruggles, Richard Neal, Cedric Alain Marie Fournet, Kapil Vaswani, Balaji Vembu
  • MEASURED RESTART OF MICROCONTROLLERS
    Publication number: 20240086542
    Abstract: In various examples there is a computing device comprising: a first microcontroller comprising a first immutable bootloader and first mutable firmware. The first immutable bootloader uses a unique device secret burnt into hardware of the computing device in order to generate an attestation of the first mutable firmware. The computing device has a second microcontroller. There is second mutable firmware at the second microcontroller. There is a second immutable bootloader at the second microcontroller which sends a measurement of the second mutable firmware to the first immutable bootloader whenever the second microcontroller restarts, such that the first microcontroller is able to include the measurement in the attestation.
    Type: Application
    Filed: November 13, 2023
    Publication date: March 14, 2024
    Inventors: Stavros VOLOS, Colin DOAK, Simon Douglas CHAMBERS, David RUGGLES, Richard NEAL, Cedric Alain Marie FOURNET, Kapil VASWANI, Balaji VEMBU
  • Measured restart of microcontrollers
    Patent number: 11853429
    Abstract: In various examples there is a computing device comprising: a first microcontroller comprising a first immutable bootloader and first mutable firmware. The first immutable bootloader uses a unique device secret burnt into hardware of the computing device in order to generate an attestation of the first mutable firmware. The computing device has a second microcontroller. There is second mutable firmware at the second microcontroller. There is a second immutable bootloader at the second microcontroller which sends a measurement of the second mutable firmware to the first immutable bootloader whenever the second microcontroller restarts, such that the first microcontroller is able to include the measurement in the attestation.
    Type: Grant
    Filed: July 13, 2021
    Date of Patent: December 26, 2023
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Stavros Volos, Colin Doak, Simon Douglas Chambers, David Ruggles, Richard Neal, Cédric Alain Marie Fournet, Kapil Vaswani, Balaji Vembu
  • MEASURED RESTART OF MICROCONTROLLERS
    Publication number: 20230020838
    Abstract: In various examples there is a computing device comprising: a first microcontroller comprising a first immutable bootloader and first mutable firmware. The first immutable bootloader uses a unique device secret burnt into hardware of the computing device in order to generate an attestation of the first mutable firmware. The computing device has a second microcontroller. There is second mutable firmware at the second microcontroller. There is a second immutable bootloader at the second microcontroller which sends a measurement of the second mutable firmware to the first immutable bootloader whenever the second microcontroller restarts, such that the first microcontroller is able to include the measurement in the attestation.
    Type: Application
    Filed: July 13, 2021
    Publication date: January 19, 2023
    Inventors: Stavros VOLOS, Colin DOAK, Simon Douglas CHAMBERS, David RUGGLES, Richard NEAL, Cédric Alain Marie FOURNET, Kapil VASWANI, Balaji VEMBU