Key update method and apparatus
US11595206B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2020 |
| Grant date | Feb 28, 2023 |
| Priority date | — |
| Expiry date | Dec 1, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/0431
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.