US 12,273,445 B2
Key management method, device, and system
Longhua Guo, Shanghai (CN); He Li, Shanghai (CN); Rong Wu, Shenzhen (CN); and Yizhuang Wu, Beijing (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Oct. 28, 2022, as Appl. No. 18/050,977.
Application 18/050,977 is a continuation of application No. PCT/CN2021/090348, filed on Apr. 27, 2021.
Claims priority of application No. 202010368028.6 (CN), filed on Apr. 30, 2020.
Prior Publication US 2023/0086032 A1, Mar. 23, 2023
Int. Cl. H04L 9/08 (2006.01); H04L 9/14 (2006.01); H04L 67/141 (2022.01)
CPC H04L 9/0866 (2013.01) [H04L 9/0825 (2013.01); H04L 9/14 (2013.01); H04L 67/141 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A key management method performed an apparatus which is a terminal device or a component of the terminal device, comprising:
generating a first authentication and key management for applications (AKMA) key and a first identifier identifying the first AKMA key;
sending a first application session establishment request message to an application function network element, wherein the first application session establishment request message comprises the first identifier identifying the first AKMA key;
performing a re-authentication procedure to obtain a second AKMA key and a second identifier identifying the second AKMA key;
receiving a first application session establishment response message for the first application session establishment request message from the application function network element, wherein the first application session establishment response message indicates a failure of an application session establishment requested by the first application session establishment request; and
sending based on the first application session establishment response message, a second application session establishment request message to the application function network element, wherein the second application session establishment request message comprises the second identifier identifying the second AKMA key.