Verfahren zur Ermöglichung der Verfolgbarkeit einer Usim-Profilübertragung von einer Quellvorrichtung zu einer Zielvorrichtung, Zugehöriges System und Fernserver

Details

Veröffentlichungs-Nr.

EP4380102

Aktenzeichen

EP22306759

Anmeldetag

30. November 2022

Veröffentlichung

5. Juni 2024

Rechtsraum

EP

IPC

H04L9/40H04W12/42

Abstract

The invention concerns a method to allow traceability of USIM profile transfer from a source device 10 to a target device 11, the method comprising: - Performing 13 a mutual trust verification of the target device 11 by the source device 10 and vice versa; - Generating 14 a derivation data at the source device 10, the derivation data being verifiable by a remote server 12 connected to the home network of the source device 10; - Deriving 15 at the source device 10 a new long-term-key K' from the source long term-key K of the source device 10 and the derivation data; - Generating 16 at the source device 10 a new USIM profile including the derived long-term-key K' and the derivation data; - Protecting 17 in confidentiality and integrity the new profile based on the target device 11's public key in order to obtain an installation package; - Transferring 18 the installation package to the target device 11; - Deactivating 23 the source USIM profile at the source device 10 if the installation of the installation package at the target device 11 is successful; - Sending 25 from the target device 11 to the remote server 12 in a registration request as specified in 3GPP TS 23.501 at least its IMSI and the derivation data; - Retrieving 27 at the remote server 12 the source long term-key K of the source device 10 and the derivation data associated to the IMSI; - Verifying 28 the validity of the received derivation data based on subscription information associated to the IMSI by the remote server 12; - Deriving 29 a new long term-key K* from the source long-term key K and the received derivation data; - Performing 30 the authentication of the target device 11 based on K* and retrieved subscription data associated to the IMSI as specified in 3GPP TS 33.501; - If K* equals K', updating 32 at the home network its local subscriber information associated to the IMSI including the long-term-key associated to the IMSI with the new value of K*.

Anmelder

Firma

THALES DIS FRANCE SAS

Land

🇫🇷 Frankreich

Fachgebiete