US 12,363,527 B2
Encryption key management among nodes in mesh networks
Tommi Petteri Parkkila, Cary, NC (US); Dathathreya Krishnabhat, Bengaluru (IN); and Matthew Rockey, Fishers, IN (US)
Assigned to ITRON, INC., Liberty Lake, WA (US)
Filed by ITRON, INC., Liberty Lake, WA (US)
Filed on Sep. 21, 2022, as Appl. No. 17/934,072.
Prior Publication US 2024/0098489 A1, Mar. 21, 2024
Int. Cl. H04W 12/0471 (2021.01); H04W 12/0433 (2021.01); H04W 12/61 (2021.01)
CPC H04W 12/0471 (2021.01) [H04W 12/0433 (2021.01); H04W 12/61 (2021.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
receiving, by a first node in a network, a first message from a second node;
determining, by the first node, that a first key usable by the first node to decrypt the first message is outdated based on a comparison of a first key version identifier associated with the first key and a second key version identifier associated with a second key, wherein the second key was used to encrypt the first message, and the second key version identifier is received by the first node from the second node with the first message; and
in response to determining that the first key is outdated, transmitting, by the first node to a key management service, a first request for an updated version of the first key to replace the first key.