Title:
CHECK METHOD AND APPARATUS
Document Type and Number:
WIPO Patent Application WO/2024/066523
Kind Code:
A1
Abstract:
The present application relates to the technical field of computers. Disclosed in the embodiments of the present application are a check method and apparatus, which can prevent, in device power outage attack scenarios, attackers from replacing new-version data in flash memories of devices with old-version data. The method comprises: first, acquiring a first count value, a second count value, a first numerical value and a second numerical value; and then, according to the first count value, the second count value, the first numerical value and the second numerical value, determining whether first data and second data in an electronic device are abnormal, wherein the first count value is a value of a counter of a first electronic fuse, the second count value is a value of a counter of a second electronic fuse, the first numerical value is used for indicating the state of the first data, the first data is data stored in a first memory, the second numerical value is used for indicating the state of the second data, the second data is data stored in a second memory, the first count value and the first numerical value have a check relationship, and the second count value and the second numerical value have a check relationship.
Inventors:
GUO FANG (CN)
WANG ZUO (CN)
ZHANG QINGLONG (CN)
WANG ZUO (CN)
ZHANG QINGLONG (CN)
Application Number:
PCT/CN2023/102319
Publication Date:
April 04, 2024
Filing Date:
June 26, 2023
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
G06F21/79
Attorney, Agent or Firm:
BEIJING RUN ZEHENG INTELLECTUAL PROPERTY LAW FIRM (CN)
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