Patents by Inventor Robert C. Graham

Robert C. Graham 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).

  • Securely signing configuration settings
    Patent number: 11822664
    Abstract: Techniques are disclosed relating to securing computing devices during boot. In various embodiments, a secure circuit of a computing device generates for a public key pair and signs, using a private key of the public key pair, configuration settings for an operating system of the computing device. A bootloader of the computing device receives a certificate for the public key pair from a certificate authority and initiates a boot sequence to load the operating system. The boot sequence includes the bootloader verifying the signed configuration settings using a public key included in the certificate and the public key pair. In some embodiments, the secure circuit cryptographically protects the private key based on a passcode of a user, the passcode being usable by the user to authenticate to the computing device.
    Type: Grant
    Filed: November 6, 2020
    Date of Patent: November 21, 2023
    Assignee: Apple Inc.
    Inventors: Xeno S. Kovah, Nikolaj Schlej, Thomas P. Mensch, Wade Benson, Jerrold V. Hauck, Josh P. de Cesare, Austin G. Jennings, John J. Dong, Robert C. Graham, Jacques Fortier
  • Securely Signing Configuration Settings
    Publication number: 20210397716
    Abstract: Techniques are disclosed relating to securing computing devices during boot. In various embodiments, a secure circuit of a computing device generates for a public key pair and signs, using a private key of the public key pair, configuration settings for an operating system of the computing device. A bootloader of the computing device receives a certificate for the public key pair from a certificate authority and initiates a boot sequence to load the operating system. The boot sequence includes the bootloader verifying the signed configuration settings using a public key included in the certificate and the public key pair. In some embodiments, the secure circuit cryptographically protects the private key based on a passcode of a user, the passcode being usable by the user to authenticate to the computing device.
    Type: Application
    Filed: November 6, 2020
    Publication date: December 23, 2021
    Inventors: Xeno S. Kovah, Nikolaj Schlej, Thomas P. Mensch, Wade Benson, Jerrold V. Hauck, Josh P. de Cesare, Austin G. Jennings, John J. Dong, Robert C. Graham, Jacques Fortier