公开(公告)号：US20240098489A1

公开(公告)日：2024-03-21

申请号：US17934072

申请日：2022-09-21

Applicant: ITRON, INC.

Inventor： Tommi Petteri PARKKILA ,  Dathathreya KRISHNABHAT ,  Matthew ROCKEY

IPC: H04W12/0471 ,  H04W12/0433 ,  H04W12/61

CPC classification number: H04W12/0471 ,  H04W12/0433 ,  H04W12/61

Abstract: Various embodiments disclosed herein provide techniques for managing encryption keys at nodes in a mesh network. In various embodiments, a method includes 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second node; determining, by the first node, that a first key usable by the first node to decrypt the first message is outdated based on a comparison of a first key version identifier associated with the first key and a second key version identifier associated with a second key, where the second key was used to encrypt the first message, and the second key version identifier is received from the second node with the first message; and in response to determining that the first key is outdated, transmitting, by the first node to a key management service, a first request for an updated version of the first key to replace the first key.

公开(公告)号：US20240097897A1

公开(公告)日：2024-03-21

申请号：US17934074

申请日：2022-09-21

Applicant: ITRON, INC.

Inventor： Tommi Petteri PARKKILA ,  Dathathreya KRISHNABHAT ,  Matthew ROCKEY

IPC: H04L9/08

CPC classification number: H04L9/0891 ,  H04L9/0894

Abstract: Various embodiments disclosed herein provide techniques for managing encryption keys at nodes in a mesh network. In various embodiments, a method includes, while in a key failure detection time period associated with a first key, detecting, by a node in a mesh network, a decryption failure using the first key; in response to detecting the decryption failure using the first key, incrementing, by the node, a failure count for the first key; and in response to determining that the failure count is at least a threshold count and a key update time period has been entered, transmitting, by the node to a key management service, a request for an update to the first key.