US 11,843,939 B2
Secure messaging for outage events
Kalvinder Pal Singh, Miami (AU); Darin Byron Johnson, San Jose, CA (US); and Zoltan Peter Kiss, Los Altos, CA (US)
Assigned to ITRON, INC., Liberty Lake, WA (US)
Filed by ITRON, INC., Liberty Lake, WA (US)
Filed on Dec. 16, 2020, as Appl. No. 17/124,428.
Prior Publication US 2022/0191689 A1, Jun. 16, 2022
Int. Cl. H04L 41/06 (2022.01); H04W 12/033 (2021.01); H04L 41/28 (2022.01); H04L 9/40 (2022.01); H04L 9/08 (2006.01); H04W 12/047 (2021.01); G06F 1/3287 (2019.01); G06F 1/3234 (2019.01)
CPC H04W 12/033 (2021.01) [G06F 1/3275 (2013.01); G06F 1/3287 (2013.01); H04L 9/0819 (2013.01); H04L 9/0894 (2013.01); H04L 41/06 (2013.01); H04L 41/28 (2013.01); H04L 63/0428 (2013.01); H04L 63/062 (2013.01); H04L 63/123 (2013.01); H04W 12/047 (2021.01)] 19 Claims
OG exemplary drawing
 
1. A method comprising:
while operating a first node in a network in a normal power mode using a first processor and a first memory:
receiving, by the first processor, a key from a second node in the network, wherein the second node is adjacent to the first node;
storing, by the first processor, the key in the first memory, wherein the first memory is capable of switching between operating in the normal power mode and operating in a low power mode where an amount of power used by the first memory is reduced; and
detecting, by the first processor, an outage event;
in response to detecting the outage event, switching to operating the first node and the first memory in the low power mode using the first processor or a second processor; and
while operating the first node and the first memory in the low power mode:
generating, by the first processor or the second processor, a message;
securing, by the first processor or the second processor, the message using the key that is retrieved from the first memory; and
sending, by the first processor or the second processor, the message to the second node.