Patents by Inventor Kevin H. Alderfer

Kevin H. Alderfer 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).

  • Patent number: 10417429
    Abstract: A method and apparatus for protecting boot variables is disclosed. A computer system includes a main processor and an auxiliary processor. The auxiliary processor includes a non-volatile memory that stores variables associated with boot code that is also stored thereon. The main processor may send a request to the auxiliary processor to alter one of the variables stored in the non-volatile memory. Responsive to receiving the request, the auxiliary processor may execute a security policy to determine if the main processor meets the criteria for altering the variable. If the auxiliary processor determines that the main processor meets the criteria, it may grant permission to alter the variable.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: September 17, 2019
    Assignee: Apple Inc.
    Inventors: Joshua P. de Cesare, Timothy R. Paaske, Xeno S. Kovah, Nikolaj Schlej, Jeffrey R. Wilcox, Hardik K. Doshi, Kevin H. Alderfer, Corey T. Kallenberg
  • Publication number: 20190114433
    Abstract: A method and apparatus for protecting boot variables is disclosed. A computer system includes a main processor and an auxiliary processor. The auxiliary processor is associated with a non-volatile memory that stores variables associated with boot code that is also stored thereon. The main processor may send a request to the auxiliary processor to alter one of the variables stored in the non-volatile memory. Responsive to receiving the request, the auxiliary processor may execute a security policy to determine if the main processor meets the criteria for altering the variable. If the auxiliary processor determines that the main processor meets the criteria, it may grant permission to alter the variable.
    Type: Application
    Filed: November 30, 2018
    Publication date: April 18, 2019
    Inventors: Joshua P. de Cesare, Timothy R. Paaske, Xeno S. Kovah, Nikolaj Schlej, Jeffrey R. Wilcox, Hardik K. Doshi, Kevin H. Alderfer, Corey T. Kallenberg
  • Publication number: 20190102558
    Abstract: A method and apparatus for performing a secure boot of a computer system is disclosed. A computer system according to the disclosure includes an auxiliary processor and a main processor. The boot process includes initially booting the auxiliary processor. The auxiliary processor is associated with a non-volatile memory storing boot code for the main processor. The auxiliary processor may perform a verification of the boot code. Subsequent to verifying the boot code, the main processor may be released from a reset state. Once the main processor is no longer in the reset state, the boot code may be provided thereto. Thereafter, the boot procedure may continue with the main processor executing the boot code.
    Type: Application
    Filed: November 30, 2018
    Publication date: April 4, 2019
    Inventors: Joshua P. de Cesare, Timothy R. Paaske, Xeno S. Kovah, Nikolaj Schlej, Jeffrey R. Wilcox, Ezekiel T. Runyon, Hardik K. Doshi, Kevin H. Alderfer, Corey T. Kallenberg
  • Publication number: 20180349609
    Abstract: A method and apparatus for protecting boot variables is disclosed. A computer system includes a main processor and an auxiliary processor. The auxiliary processor includes a non-volatile memory that stores variables associated with boot code that is also stored thereon. The main processor may send a request to the auxiliary processor to alter one of the variables stored in the non-volatile memory. Responsive to receiving the request, the auxiliary processor may execute a security policy to determine if the main processor meets the criteria for altering the variable. If the auxiliary processor determines that the main processor meets the criteria, it may grant permission to alter the variable.
    Type: Application
    Filed: September 29, 2017
    Publication date: December 6, 2018
    Inventors: Joshua P. de Cesare, Timothy R. Paaske, Xeno S. Kovah, Nikolaj Schlej, Jeffrey R. Wilcox, Hardik K. Doshi, Kevin H. Alderfer, Corey T. Kallenberg
  • Publication number: 20180349608
    Abstract: A method and apparatus for performing a secure boot of a computer system is disclosed. A computer system according to the disclosure includes an auxiliary processor and a main processor. The boot process includes initially booting the auxiliary processor. The auxiliary processor includes a non-volatile memory storing boot code for the main processor. The auxiliary processor may perform a verification of the boot code. Subsequent to verifying the boot code, the main processor may be released from a reset state. Once the main processor is no longer in the reset state, the boot code may be provided thereto. Thereafter, the boot procedure may continue with the main processor executing the boot code.
    Type: Application
    Filed: September 29, 2017
    Publication date: December 6, 2018
    Inventors: Joshua P. de Cesare, Timothy R. Paaske, Xeno S. Kovah, Nikolaj Schlej, Jeffrey R. Wilcox, Ezekiel T. Runyon, Hardik K. Doshi, Kevin H. Alderfer, Corey T. Kallenberg