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:
Jan. 02, 2024
Filed:
Jan. 05, 2023
Apple Inc., Cupertino, CA (US);
Xiangying Yang, Cupertino, CA (US);
Huarui Liang, Beijing, CN;
Lijia Zhang, Beijing, CN;
Shu Guo, Beijing, CN;
Haijing Hu, Beijing, CN;
Fangli Xu, Beijing, CN;
Yuqin Chen, Shenzen, CN;
Dawei Zhang, Saratoga, CA (US);
Li Li, Los Altos, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
Techniques to protect a subscriber identity, by encrypting a subscription permanent identifier (SUPI) to form one-time use subscription concealed identifiers (SUCIs) using a set of one-time ephemeral asymmetric keys, generated by a user equipment (UE), and network provided keys are disclosed. Encryption of the SUPI to form the SUCIs can mitigate snooping by rogue network entities, such as fake base stations. The UE is restricted from providing the unencrypted SUPI over an unauthenticated connection to a network entity. In some instances, the UE uses a trusted symmetric fallback encryption key Kor trusted asymmetric fallback public key PKto verify messages from an unauthenticated network entity and/or to encrypt the SUPI to form a fallback SUCIfor communication of messages with the unauthenticated network entity.