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:
Feb. 17, 2026
Filed:
Mar. 29, 2023
Huawei Technologies Co., Ltd., Shenzhen, CN;
HUAWEI TECHNOLOGIES CO., LTD., Shenzhen, CN;
Abstract
A key derivation method, an apparatus, and a system. The method includes: user equipment (UE) receives an authentication success message from a mobility management function network element, generates a master session key (MSK) and an extended master session key (EMSK) based on the authentication success message; and determines whether an authentication device is located outside a 3rd generation partnership project (3GPP) network, to determine whether to obtain Kausf based on the EMSK or the MSK. Therefore, the UE can be compatible with a key derivation manner used when the authentication device is located outside the 3GPP network and a key derivation manner used when the authentication device is located inside the 3GPP network.