Key management for applications
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsCheng WANG, Vlasios TSIATSIS
Life of this patent
Estimating the term…
Abstract
A method (600) for providing cryptographic information to a lawful interception function (LIF) (a.k.a.,. ALICP). The method includes obtaining (s602) an address for the LIF. The method also includes obtaining (s604) cryptographic information (e.g., a cryptographic key) that is used to secure communications between a user equipment (UE) and an application function (AF). The method also includes using (s606) the obtained address for the LIF to provide to the LIF a report message (m518, m524) the obtained cryptographic information.
Claims18
1-13. (canceled)
A method comprising:
- obtaining an address for a lawful interception function (LIF);
- obtaining cryptographic information that is used to secure communications between a user equipment (UE) and an application function (AF);
- and
- using the obtained address for the LIF to provide to the LIF a report message comprising the obtained cryptographic information, wherein
- the UE has a home Public Land Mobile Network (PLMN),
- the UE is currently being served by a visited PLMN (VPLMN),
- the LIF is within the VPLMN, and
- the method is performed by a network function within the UE's home PLMN.
A network node, the network node comprising:
- memory;
- and
- processing circuitry, wherein the memory comprises computer instructions for configuring the network to perform a method comprising:
- obtaining an address for a lawful interception function (LIF);
- obtaining cryptographic information that is used to secure communications between a user equipment (UE) and an application function (AF);
- and
- using the obtained address for the LIF to provide to the LIF a report message comprising the obtained cryptographic information, wherein
- the UE has a home Public Land Mobile Network (PLMN),
- the UE is currently being served by a visited PLMN (VPLMN),
- the LIF is within the VPLMN, and
- the method is performed by a network function within the UE's home PLMN.
Dependencies are inferred from the claim text.