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. 10, 2024
Filed:
Nov. 13, 2023
Microsoft Technology Licensing, Llc, Redmond, WA (US);
Stavros Volos, Cambridge, GB;
Colin Doak, Bristol, GB;
Simon Douglas Chambers, Bristol, GB;
David Ruggles, Bristol, GB;
Richard Neal, Bristol, GB;
Cedric Alain Marie Fournet, Cambridge, GB;
Kapil Vaswani, Bangalore, IN;
Balaji Vembu, Redmond, WA (US);
Microsoft Technology Licensing, LLC., Redmond, WA (US);
Abstract
In various examples there is a computing device comprising: a first microcontroller comprising a first immutable bootloader and first mutable firmware. The first immutable bootloader uses a unique device secret burnt into hardware of the computing device in order to generate an attestation of the first mutable firmware. The computing device has a second microcontroller. There is second mutable firmware at the second microcontroller. There is a second immutable bootloader at the second microcontroller which sends a measurement of the second mutable firmware to the first immutable bootloader whenever the second microcontroller restarts, such that the first microcontroller is able to include the measurement in the attestation.