Invention Grant
- Patent Title: Key update method and apparatus
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Application No.: US16922485Application Date: 2020-07-07
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Publication No.: US11595206B2Publication Date: 2023-02-28
- Inventor: He Li , Jing Chen
- Applicant: HUAWEI TECHNOLOGIES CO., LTD.
- Applicant Address: CN Guangdong
- Assignee: HUAWEI TECHNOLOGIES CO., LTD.
- Current Assignee: HUAWEI TECHNOLOGIES CO., LTD.
- Current Assignee Address: CN Guangdong
- Agency: Fish & Richardson P.C.
- Priority: CN201810016762.9 20180108
- Main IPC: H04L9/08
- IPC: H04L9/08 ; H04W12/06 ; H04W12/0433

Abstract:
Embodiments of this application provide key update methods and apparatuses in the field of communications technologies. A communications system includes a terminal and a core network device. The terminal can access the core network device using both a first access technology and a second access technology. The first connection and the second connection have a shared key. Key update for the first connection is performed in obtaining a first key identifier that identifies a first key obtained by performing the key update for the first connection. In response to determining that the second connection is in a connected state, the shared key for the second connection and a second key identifier that identifies the shared key are retained. The shared key is kept using for the second connection before performing key update for the second connection.
Public/Granted literature
- US20200336305A1 Key Update Method And Apparatus Public/Granted day:2020-10-22
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