The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 27, 2021
Filed:
Aug. 09, 2019
Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;
Vesa Torvinen, Sauvo, FI;
Noamen Ben Henda, Stockholm, SE;
David Castellanos Zamora, Madrid, ES;
Prajwol Kumar Nakarmi, Sollentuna, SE;
Pasi Saarinen, Spånga, SE;
Monica Wifvesson, Lund, SE;
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm, SE;
Abstract
A method performed by an authentication server in a home network of a UE for obtaining a subscription permanent identifier, SUPI. The method comprises: receiving a SUCI which comprises an encrypted part in which at least a part of the SUPI is encrypted, and a clear-text part which comprises a home network identifier and an encryption scheme identifier that identifies an encryption scheme used by the UE to encrypt the SUPI in the SUCI; determining a de-concealing server to use to decrypt the encrypted part of the SUCI; sending the SUCI to the de-concealing server; and receiving the SUPI in response. Methods performed by a UE and a de-concealing server are also disclosed. Furthermore, UEs, de-concealing servers, authentication servers, computer program and a memory circuitry are also disclosed.