公开(公告)号：US11907411B2

公开(公告)日：2024-02-20

申请号：US17777843

申请日：2019-12-09

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Mason Andrew Gunyuzlu ,  Robert Stephen Craig ,  Tevin Richards

IPC: G06F21/83 ,  G06F21/31 ,  G06F21/74

CPC classification number: G06F21/83 ,  G06F21/31 ,  G06F21/74

Abstract: Example computing devices that are enabled to enter secure operating modes are provided. An example computing device includes a main processor to run an operating system enabled to establish communication from an external device to the main processor via a hardware interrupt handler when the external device is connected to the computing device. The computing device further includes a keyboard controller to detect a lock keystroke sequence at a keyboard, and, in response to detecting the lock keystroke sequence, cause the main processor to halt the operating system and to enter a secure operating mode in which communication from the external device to the main processor via the hardware interrupt handler is blocked.

公开(公告)号：US20250068715A1

公开(公告)日：2025-02-27

申请号：US18724878

申请日：2022-01-13

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Jeffrey Kevin Jeansonne ,  Mason Andrew Gunyuzlu

IPC: G06F21/44 ,  G06F21/57

Abstract: An example computing device comprises a memory to store control instructions, and a processor to: perform a first authentication of the control instructions using a first key; and in response to receipt of a command to enable a second authentication of the control instructions, add a second key to a one-time programmable portion of the memory, wherein the command is signed using the first key, the second key to perform a second authentication of the control instructions with the first key to perform the first authentication of the control instructions.

公开(公告)号：US20230418590A1

公开(公告)日：2023-12-28

申请号：US17846752

申请日：2022-06-22

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Mason Andrew Gunyuzlu ,  Rosilet Retnamoni Braduke ,  Jeffrey Kevin Jeansonne ,  James Luke Mondshine

IPC: G06F8/654 ,  G06F21/57 ,  H04L9/32

CPC classification number: G06F8/654 ,  G06F21/572 ,  H04L9/3239 ,  G06F2221/033

Abstract: Examples of electronic devices are described herein. In some examples, an electronic device includes a flash memory. In some examples, the electronic device includes a basic input/output system (BIOS). In some examples, the electronic device includes a controller to unlock a region of the flash memory based on a message from the BIOS. In some examples, the electronic device includes an operating system (OS). In some examples, an application in the OS updates instructions in the region when the OS is loaded and the electronic device is in an awake state. In some examples, the controller locks the region after the update.

公开(公告)号：US11797230B2

公开(公告)日：2023-10-24

申请号：US17550050

申请日：2021-12-14

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Jeffrey Kevin Jeansonne ,  Khoa Huynh ,  Mason Andrew Gunyuzlu

IPC: G06F3/06 ,  G06F9/4401

CPC classification number: G06F3/0659 ,  G06F3/064 ,  G06F3/0604 ,  G06F3/0631 ,  G06F3/0679 ,  G06F9/4406

Abstract: In one example in accordance with the present disclosure, an electronic device is described. The example electronic device includes a NAND flash device to store a static data component of a variable. The example electronic device also includes a NOR flash device to store a dynamic data component of the variable. The electronic device further includes a controller to write the static data component of the variable to the NAND flash device. This controller is also to write the dynamic data component of the variable to the NOR flash device.

公开(公告)号：US20230185481A1

公开(公告)日：2023-06-15

申请号：US17550050

申请日：2021-12-14

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Jeffrey Kevin Jeansonne ,  Khoa Huynh ,  Mason Andrew Gunyuzlu

IPC: G06F3/06 ,  G06F9/4401

CPC classification number: G06F3/0659 ,  G06F3/0631 ,  G06F3/064 ,  G06F3/0604 ,  G06F3/0679 ,  G06F9/4406

Abstract: In one example in accordance with the present disclosure, an electronic device is described. The example electronic device includes a NAND flash device to store a static data component of a variable. The example electronic device also includes a NOR flash device to store a dynamic data component of the variable. The electronic device further includes a controller to write the static data component of the variable to the NAND flash device. This controller is also to write the dynamic data component of the variable to the NOR flash device.