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. 08, 2025
Filed:
Mar. 30, 2023
Qualcomm Incorporated, San Diego, CA (US);
Joona Verneri Kannisto, Salo, FI;
Aseem Brahma, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Systems and techniques are described for key establishment. For instance, a process can, during a first cryptographic key derivation, store a first trusted measurement value of a first entity in a first storage location, store an expected measurement value of a second entity in a second storage location, and generate a first instance of a cryptographic key using the first trusted measurement value, the expected measurement value, and a key derivation function (KDF). The process can, during a second cryptographic key derivation, obtain the expected measurement value as a second trusted measurement value of the second entity and store it in the second storage location, obtain the first trusted measurement value as a second expected measurement value and store it in the first storage location, and generate a second instance of the cryptographic key using the second expected measurement value, the second trusted measurement value, and the key derivation function.