US 12,278,892 B2
Method and system for symmetric key distribution between electronic vehicle components
Kenneth William Junk, Marshalltown, IA (US)
Assigned to GM Global Technology Operations LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Jun. 3, 2022, as Appl. No. 17/832,102.
Prior Publication US 2023/0396417 A1, Dec. 7, 2023
Int. Cl. H04L 9/08 (2006.01); H04L 9/00 (2022.01); H04L 9/32 (2006.01)
CPC H04L 9/0841 (2013.01) [H04L 9/006 (2013.01); H04L 9/085 (2013.01); H04L 9/3242 (2013.01); H04L 9/3271 (2013.01); H04L 2209/84 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for public key infrastructure for serviceable electronic components, the method comprising:
identifying a plurality of electronic components in electronic communication with each other;
establishing that each of the plurality of electronic components is a trusted device according to a certificate history including a plurality of signed public keys stored upon the respective electronic component;
utilizing signed Diffie-Hellman key exchange to distribute symmetric keys to each of the plurality of electronic components, wherein utilizing the Diffie-Hellman key exchange to distribute symmetric keys to each of the plurality of electronic components includes establishing a shared secret between the plurality of electronic components and establishing the shared secret includes:
iteratively signing public keys of the plurality of electronic components with private keys of the plurality of electronic components to create signed public keys; and
defining the shared secret based upon the signed public keys of the plurality of electronic components; and
communicating between the plurality of electronic components with the symmetric keys to achieve tangible functions that may be provided by the plurality of electronic components.