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. 15, 2025
Filed:
Mar. 22, 2023
Google Llc, Mountain View, CA (US);
Jordan Thomas Hand, Woodinville, WA (US);
Christopher Edward Fenner, Kirkland, WA (US);
Jeffrey Thomas Andersen, Kirkland, WA (US);
Vidya Bharat Satyamsetti, Bothell, WA (US);
GOOGLE LLC, Mountain View, CA (US);
Abstract
The present disclosure provides systems and methods for demonstrating the identity of a central processing unit (CPU) to a Trusted Platform Module (TPM) with improved security against, for example, interposers on a communications bus. In particular, according to an aspect of the present disclosure, a CPU can generate a policy alias key that can be used to sign a challenge to prove the identity of the CPU to the TPM. Specifically, the policy alias key can be generated by the CPU by performing a key derivation function on a combined identity value generated by the CPU for the CPU and TPM. The combined identity value can be generated by the CPU from a CPU device identity value and a public endorsement key (EK) associated with the TPM.