US 12,463,821 B2
Computing systems featuring centralized attestation device
Vidya Bharat Satyamsetti, Bothell, WA (US); Jeffrey Thomas Andersen, Kirkland, WA (US); Jordan Thomas Hand, Woodinville, WA (US); and Christopher Edward Fenner, Kirkland, WA (US)
Assigned to GOOGLE LLC, Mountain View, CA (US)
Appl. No. 18/250,838
Filed by Google LLC, Mountain View, CA (US)
PCT Filed Mar. 22, 2023, PCT No. PCT/US2023/015858
§ 371(c)(1), (2) Date Apr. 27, 2023,
PCT Pub. No. WO2023/183361, PCT Pub. Date Sep. 28, 2023.
Claims priority of provisional application 63/322,348, filed on Mar. 22, 2022.
Prior Publication US 2024/0364531 A1, Oct. 31, 2024
Int. Cl. H04L 9/32 (2006.01); G06F 21/57 (2013.01); H04L 9/08 (2006.01)
CPC H04L 9/3242 (2013.01) [G06F 21/57 (2013.01); H04L 9/0825 (2013.01); H04L 9/0877 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A computer system with improved security, the computer system comprising:
an attester device configured to communicate with one or more platform components and a verifier to perform attestation operations on behalf of the one or more platform components, the attestation operations comprising:
receiving, from a first component of the one or more platform components, a measurement collected by the first component;
generating a hash value based at least in part on the measurement collected by the first component;
receiving a challenge from the verifier;
generating a hash key based at least in part on the hash value;
signing the challenge using the hash key to generate a signed challenge;
transmitting the signed challenge to the verifier;
generating a certificate over a public portion of the hash key and signing the certificate with an attester device key; and
presenting a certificate chain ending with the certificate over the public portion of the hash key as a leaf certificate to the verifier.