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:
Dec. 26, 2023
Filed:
Nov. 15, 2021
Apple Inc., Cupertino, CA (US);
Xiangying Yang, Cupertino, CA (US);
Shu Guo, Beijing, CN;
Lijia Zhang, Beijing, CN;
Qian Sun, Beijing, CN;
Huarui Liang, Beijing, CN;
Fangli Xu, Beijing, CN;
Yuqin Chen, Shenzen, CN;
Haijing Hu, Beijing, CN;
Dawei Zhang, Saratoga, CA (US);
Hao Duo, Beijing, CN;
Lanpeng Chen, Beijing, CN;
Apple Inc., Cupertino, CA (US);
Abstract
Techniques for identity-based message integrity protection and verification between a user equipment (UE) and a wireless network entity, include use of signatures derived from identity-based keys. To protect against attacks from rogue network entities before activation of a security context with a network entity, the UE verifies integrity of messages by checking a signature using an identity-based public key PKderived by the UE based on (i) an identity value (ID) of the network entity and (ii) a separate public key PKof a private key generator (PKG) server. The network entity generates signatures for messages using an identity-based private key SKobtained from the PKG server, which generates the identity-based private key SKusing (i) the ID value of the network entity and (ii) a private key SKthat is known only by the PKG server and corresponds to the public key PK.