Patent · US Active

Mitigation of problems arising from SIM key leakage

US11228428B2 · kind B2 · utility

0Cited by

1References

3Claims

0Family size

Assignee

VODAFONE IP LICENSING LIMITED · GB

Inventor

Stephen Babbage · Newbury, GB

Key dates

Filing date	Dec 11, 2019
Grant date	Jan 18, 2022
Priority date	—
Expiry date	Dec 11, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH04W12/35
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Method, system or Universal Integrated Circuit Card (UICC) for provisioning a UICC with a new key. The UICC contains an initial subscriber key shared between the UICC and an authentication center. A new key is exchanged between the UICC and the authentication center using a communication between the UICC and the authentication center authenticated using the initial subscriber key. The new key is used in place of the initial subscriber key for further communications with the UICC.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.