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. 14, 2025
Filed:
Jan. 07, 2021
Rom instruction authentication and integrity verification for artificial reality security controller
Meta Platforms Technologies, Llc, Menlo Park, CA (US);
Sudhir Satpathy, Redmond, WA (US);
Wojciech Stefan Powiertowski, Kirkland, WA (US);
Nagendra Gupta Modadugu, San Francisco, CA (US);
Neeraj Upasani, Sammamish, WA (US);
Meta Platforms Technologies, LLC, Menlo Park, CA (US);
Abstract
Systems, methods, and devices authenticate processor instructions stored by a read-only memory (ROM). In one example, a ROM stores a block of register words. The block of register words includes a first register word specifying an authentication tag and one or more register words that each specify an instruction. A security controller identifies the first register word as specifying the authentication tag and performs authentication of the authentication tag. Upon successfully authenticating the authentication tag, the security controller forwards the register words that each specify instructions to a processor for execution. Upon unsuccessfully authenticating the authentication tag, the security controller blocks the register words that each specify instructions from execution by the processor.