The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 24, 2024
Filed:
Apr. 25, 2022
Applicant:
Huawei Technologies Co., Ltd., Shenzhen, CN;
Inventors:
Assignee:
Huawei Technologies Co., Ltd., Shenzhen, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 21/55 (2013.01); G06F 13/24 (2006.01); G06F 13/40 (2006.01); G06F 21/85 (2013.01);
U.S. Cl.
CPC ...
G06F 21/556 (2013.01); G06F 13/24 (2013.01); G06F 13/4068 (2013.01); G06F 21/554 (2013.01); G06F 21/85 (2013.01);
Abstract
A device includes a non-maskable interrupt (NMI) signal path, a processor, and a peripheral component. The peripheral component may comprise secret data, such as a secret key. The processor may perform a preconfigured NMI interrupt service routine (ISR), in response to detecting a preconfigured signal in the NMI signal path. Access to at least a part of the peripheral component may be enabled in response to detecting the preconfigured signal in the NMI signal path. Thus, the processor may be able to access the secret data, for example, when the processor is running the NMI ISR.