Secure re-use of SIM security parameters
US11166163B2 · kind B2 · utility
0Cited by
3References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 30, 2019 |
| Grant date | Nov 2, 2021 |
| Priority date | — |
| Expiry date | Apr 24, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/06
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Various arrangements for using a SIM card across multiple wireless networks are presented. A DKi value may be stored by the SIM card. The SIM card may calculated a FKi value using the DKi value and a stored BKi value. The SIM card can attach to a guest wireless network. A challenge may be received by the SIM card from the guest wireless network. The SIM card may calculate an answer to the challenge using the FKi value. The answer may be transmitted to the wireless network. In response to the answer being correct, the wireless device having the SIM card installed is successfully authenticated to use the wireless network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.