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:
Nov. 25, 2025
Filed:
Jul. 31, 2023
Beijing Xiaomi Mobile Software Co., Ltd., Beijing, CN;
Ze Jin, Beijing, CN;
BEIJING XIAOMI MOBILE SOFTWARE CO., LTD., Beijing, CN;
Abstract
A secure boot method of an Internet of Things (IoT) apparatus includes: in response to a system boot signal of the IoT apparatus, verifying an authentication signature of a bootloader firmware and an authentication signature of an application layer (App) firmware; reading an encryption key stored in a one-time programmable memory in response to determining that the authentication signature of the bootloader firmware and the authentication signature of the App firmware both pass verification, in which the encryption key is configured to have a write protection attribute; decrypting the App firmware according to the encryption key, and running the decrypted App firmware; and in response to determining to read encrypted flash-memory partition data in a flash memory (Flash), decrypting the encrypted flash-memory partition data according to the encryption key, so as to securely boot up the IoT apparatus.