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:
Sep. 01, 2026
Filed:
Dec. 15, 2023
Apple Inc., Cupertino, CA (US);
Thomas P. Mensch, Sunnyvale, CA (US);
Elad Efrat, San Jose, CA (US);
David Tamagno, Livermore, CA (US);
Armaiti Ardeshiricham, San Diego, CA (US);
Wade Benson, Sunnyvale, CA (US);
Yannick L Sierra, San Francisco, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
Techniques are disclosed relating to cryptographic key exchanges. In some embodiments, a first device belonging to a first device group receives a request to perform a key exchange to establish a shared secret with a second device belonging to a second device group. The first device verifies a key authorization data structure issued by a key authority, the key authorization data structure including a first public key of a first participant authority authorized to identify members of the first device group and a second public key of a second participant authority authorized to identify members of the second device group. In response to the verifying being successful, the first device performs the requested exchange using a public key pair attested to by the first participant authority as belonging to a member in the first device group.