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:
Aug. 02, 2022
Filed:
Dec. 07, 2020
Huawei Technologies Co., Ltd., Shenzhen, CN;
Shilin Pan, Shanghai, CN;
HUAWEI TECHNOLOGIES CO., LTD., Shenzhen, CN;
Abstract
A key processing method includes receiving, in a trusted execution environment, an initial key from a file encryption system in a normal execution environment, decrypting, in the trusted execution environment, the initial key to obtain a file key, storing, in the trusted execution environment, the file key in a key register of a storage controller, where the file encryption system in the normal execution environment is forbidden to access the key register, obtaining, in the trusted execution environment, a key index of the file key in the key register, where the key index indicates a storage location of the file key in the key register, and sending, in the trusted execution environment, the key index to the file encryption system.